Abstract

A solar-powered ammonia and oxygen production system includes an electrolyzer, a PV cell unit, a heat exchanger, a solar tower, an air separation unit, a boiler, a first compressor, a second compressor and a third compressor, a turbine, a condenser, a water circulation pump, and a catalytic converter. The system utilizes these components to co-produce ammonia and oxygen while generating surplus power. The ambient air intake of the first compressor connects to the heat exchanger, which is thermally coupled to the solar tower. This hot air from the heat exchanger is supplied to the air separation unit. The nitrogen output from the air separation unit feeds into the boiler, and from there, to the catalytic converter. The boiler, turbine, condenser, and water circulation pump form a water/steam unit to rotate the turbine, producing mechanical energy that powers the first and second compressors.

IPC Classes  ?

• C25B 1/27 - Ammonia
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes

Abstract

A filtration membrane including a first layer comprising a polyester terephthalate nonwoven fabric, a second layer comprising a polyvinylidene fluoride matrix doped with a polyvinylpyrrolidone and titanium dioxide nanoparticles, and a third layer comprising a polypyrrole polymer. A method of making the membrane is also described. The membrane of the present disclosure is self-cleaning under visible light irradiation conditions.

IPC Classes  ?

• B01D 69/14 - Dynamic membranes
• B01D 17/04 - Breaking emulsions
• B01D 65/02 - Membrane cleaning or sterilisation
• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 71/34 - Polyvinylidene fluoride
• B01D 71/48 - Polyesters
• B01D 71/62 - Polycondensates having nitrogen-containing heterocyclic rings in the main chain
• C02F 1/32 - Treatment of water, waste water, or sewage by irradiation with ultraviolet light
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C02F 1/72 - Treatment of water, waste water, or sewage by oxidation

Abstract

A complex for treating a cancer includes gold, a 1,3-bis(2,6-di-isopropylphenyl)imidazole-2-ylidene ligand, and at least one phosphane ligand selected from the group consisting of bis(2-cyanoethyl)phenylphosphane, (1R,2R)-2-diphenylphosphano)-1 aminocyclohexane, (1R,2R)-2-diphenylphosphano)-1,2-diphenylethylamine, (R)-2 (diphenylphosphano)-1-phenylethylamine, (R)-1-(diphenylphosphano)-2-amino-3,3 dimethylbutane, tricyclohexylphosphane, and 3-(diphenylphosphano)propylamine), wherein the 1,3-bis(2,6-di-isopropylphenyl)imidazole-2-ylidene ligand and the at least one phosphane ligand are bonded to the gold.

IPC Classes  ?

• A61K 47/54 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
• A61P 35/00 - Antineoplastic agents

Abstract

A method of detecting SARS-COV in a sample includes contacting a metal-organic framework with at least one fluorophore-labeled single-stranded probe deoxyribose nucleic acid (DNA) to form a biosensor. The metal-organic framework of the method is zeolitic imidazolate framework-8 (ZIF-8), and the fluorophore-labeled single-stranded probe DNA (p-DNA) has a fluorescence signal at 513 to 517 nm. The method further includes contacting the sample with the biosensor in a solution, and the sample comprises a target sequence of SARS-COV. The target sequence of SARS-COV and the fluorophore-labeled single-stranded p-DNA of the method hybridize to form a double-stranded product. Following the step of the hybridization forming the double-stranded product, the method includes detecting the double-stranded product by observing a change in fluorescence.

IPC Classes  ?

• G16H 50/80 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for detecting, monitoring or modelling epidemics or pandemics, e.g. flu
• G01N 33/58 - Chemical analysis of biological material, e.g. blood, urineTesting involving biospecific ligand binding methodsImmunological testing involving labelled substances

Abstract

A method for consolidating a subterranean geologic formation is provided. The method includes injecting a first composition, a second composition, and a third composition into the subterranean geologic formation. The first composition includes CaO, the second composition includes MgO, and the third composition includes NH4HF2. The method includes injecting at least one thermochemical fluid into the subterranean geologic formation to raise a temperature of the subterranean geologic formation to at least 120° C. The method includes reacting the third composition respectively with the first composition and the second composition to form CaF2 and MgF2 in the subterranean geologic formation. The method includes precipitating the CaF2 and the MgF2 on sand grains of the subterranean geologic formation to bind the sand grains together into a consolidated matrix in the subterranean geologic formation.

IPC Classes  ?

• C09K 8/57 - Compositions based on water or polar solvents

Abstract

A method for consolidating a subterranean geologic formation is provided. The method includes injecting a first composition, a second composition, and a third composition into the subterranean geologic formation. The first composition includes CaO, the second composition includes MgO, and the third composition includes NH4HF2. The method includes injecting at least one thermochemical fluid into the subterranean geologic formation to raise a temperature of the subterranean geologic formation to at least 120° C. The method includes reacting the third composition respectively with the first composition and the second composition to form CaF2 and MgF2 in the subterranean geologic formation. The method includes precipitating the CaF2 and the MgF2 on sand grains of the subterranean geologic formation to bind the sand grains together into a consolidated matrix in the subterranean geologic formation.

IPC Classes  ?

• C09K 8/57 - Compositions based on water or polar solvents

Abstract

A membrane reactor (MR) system includes an enclosure. The enclosure includes a shell, a front cap and a back cap. The shell is porous and includes a steam-methane reforming (SMR) catalyst. The MR system includes a feed inlet fluidly connected to the enclosure and configured to receive a feed gas comprising CH4 and H2O. At least one tube is disposed inside the enclosure and having a sidewall defining a feed side and a sweep side. The feed side is connected to the feed inlet to receive the feed gas that is configured to produce H2 catalyzed by the SMR catalyst of the shell. The sidewall includes a palladium silver (Pd—Ag) membrane configured to selectively permeate the H2 from the feed side to the sweep side. A sweep inlet is connected to the sweep side and configured to receive a sweep gas to carry and transport the H2.

IPC Classes  ?

• C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts

Abstract

A process for separating 1-butene from a C4 raffinate gas composition includes introducing the C4 raffinate gas composition to a reactor containing an adsorbent material and passing the C4 raffinate gas composition through the adsorbent material; adsorbing the 1-butene from the C4 raffinate gas composition onto the adsorbent material to separate the 1-butene from the C4 raffinate gas composition and form a residue gas composition; and desorbing the 1-butene by heating the adsorbent material after the adsorbing to form the 1-butene and regenerate the adsorbent material. The adsorbent material is at least one of a zeolite adsorbent and an alkali-modified zeolite adsorbent having at least 99% by weight selective towards 1-butene for adsorption in comparison to iso-butene and iso-butane.

IPC Classes  ?

• C07C 7/13 - Purification, separation or stabilisation of hydrocarbonsUse of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique
• B01J 20/18 - Synthetic zeolitic molecular sieves
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C07C 11/08 - Alkenes with four carbon atoms

Abstract

A method for consolidating a subterranean geologic formation is provided. The method includes injecting a first composition, a second composition, and a third composition into the subterranean geologic formation. The first composition includes CaO, the second composition includes MgO, and the third composition includes NH4HF2. The method includes injecting at least one thermochemical fluid into the subterranean geologic formation to raise a temperature of the subterranean geologic formation to at least 120° C. The method includes reacting the third composition respectively with the first composition and the second composition to form CaF2 and MgF2 in the subterranean geologic formation. The method includes precipitating the CaF2 and the MgF2 on sand grains of the subterranean geologic formation to bind the sand grains together into a consolidated matrix in the subterranean geologic formation.

IPC Classes  ?

• C09K 8/57 - Compositions based on water or polar solvents

Abstract

A method of generating oxygen including applying a potential of greater than 0 to 2.0 V to an electrochemical cell. The electrochemical cell is at least partially submerged in an aqueous solution, where on applying the potential the aqueous solution is oxidized thereby forming oxygen. The electrochemical cell includes an electrocatalyst; and a counter electrode. The electrocatalyst includes a nickel foam substrate; and a layer of particles of a FeNi alloy on the surface of the nickel foam substrate, where the particles of the FeNi alloy are in the form of nanosheets, where the nanosheets have average width of 1-5 μm and an average length of 1-10 μm, and where the nanosheets are vertically aligned to form a flower shape.

IPC Classes  ?

• C25B 11/089 - Alloys
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 11/02 - ElectrodesManufacture thereof not otherwise provided for characterised by shape or form
• C25B 11/061 - Metal or alloy

Abstract

5 in the form of nanosheets. The nanosheets have an average width of 200 nanometers (nm) to 800 nm and form a hierarchical structure.

IPC Classes  ?

• C07C 41/01 - Preparation of ethers
• C07C 29/15 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively

Abstract

A system for monitoring glucose concentration that includes a sample holder configured to contain a sample and a radio frequency transmitter configured to emit microwave radiation through the sample. The radio frequency transmitter comprising a radio frequency generator and a first antenna. The radio frequency receiver is configured to receive microwave radiation transmitted from the radio frequency transmitter and passed through the sample, and convert the microwave radiation passed through the sample to an analog signal. The radio frequency receiver comprising a second antenna. The system also includes an analog readout circuit configured to receive the analog signal and process the analog signal into a modified analog signal, and a digital signal processing circuit configured to receive the modified analog signal, convert the modified analog signal into a digital signal, and determine the glucose concentration of the sample from the digital signal.

IPC Classes  ?

• G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
• A61B 5/145 - Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value
• G01N 33/49 - Physical analysis of biological material of liquid biological material blood

Abstract

A wireless sensor network (WSN) and a method of routing in a wireless sensor network (WSN) includes wireless sensor nodes for monitoring an environment and a base station having a WSN manager to which information about the environment is sent from the wireless sensor nodes via multiple hop communication. The method includes responding to an attack on the wireless sensor network by an adversary to locate critical nodes among the wireless sensor nodes by adaptively deploying a sequence of different routing mechanisms, by the WSN manager, to the wireless sensor nodes such that location privacy preservation (LPP) is protected by preventing detection of location of the critical nodes.

IPC Classes  ?

• H04W 12/122 - Counter-measures against attacksProtection against rogue devices
• H04W 12/02 - Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• H04W 84/18 - Self-organising networks, e.g. ad hoc networks or sensor networks

Abstract

A method for recovering metals includes mixing AC5 with a first solution comprising at least one metal ion to produce an AC5-metal ion complex. The method includes separating the AC5-metal ion complex from a second solution. The method further includes regenerating AC5 by dissociating the at least one metal ion from the AC5-metal ion complex. AC5 is a tris-benzo-15-crown-5 compound.

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

A complex for treating cancer includes a 2-(di-tert-butylphosphino)biphenyl ligand and a bis(diphenylphosphino)alkane ligand. The complex is dinuclear having two gold atoms, wherein the 2-(di-tert-butylphosphino)biphenyl ligand and the bis(diphenylphosphino)alkane ligand are bonded to the gold atoms, and wherein the bis(diphenylphosphino)alkane ligand is bridging the two gold atoms.

IPC Classes  ?

• A61K 47/54 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
• A61P 35/00 - Antineoplastic agents

Abstract

The present disclosure provides an asymmetric supercapacitor that includes a negative electrode, a positive electrode, an ionic liquid electrolyte, and a separator. The negative electrode includes a tomato leaf activated carbon having a hierarchical porosity disposed on a first carbon cloth. The positive electrode includes a polyaniline disposed on a second carbon cloth; an ionic liquid electrolyte. The separator is located between the positive electrode and the negative electrode, and the ionic liquid electrolyte is present in and on the separator. The supercapacitor may be implemented in a heart pulse rate monitoring system.

IPC Classes  ?

• H01G 11/34 - Carbon-based characterised by carbonisation or activation of carbon
• H01G 11/26 - Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
• H01G 11/48 - Conductive polymers
• H01G 11/58 - Liquid electrolytes
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
• A61B 5/024 - Measuring pulse rate or heart rate

Abstract

A cement composition includes a curable component in an amount of 10 to 25 wt. %; a fine aggregate (FA) in an amount of 20 to 40 wt. %; a coarse aggregate (CA) in an amount of 40 to 50 wt. %; and an alkaline component in an amount of 5 to 15 wt. %, each wt. % based on the total weight of the cement composition. The curable component includes a cementitious material having an average particle size (D50) of 10 to 17 micrometers (μm), a limestone powder (LSP) material having a D50 of 13 to 19 μm, a red mud (RM) material having a D50 of 30 to 36 μm, a silicomanganese fume (SMF) material having a D50 of 28 to 34 μm, and a natural pozzolan (NP) material having a D50 of 13 to 19 μm.

IPC Classes  ?

• C04B 28/04 - Portland cements
• C04B 14/04 - Silica-rich materialsSilicates
• C04B 14/14 - Minerals of vulcanic origin
• C04B 14/28 - Carbonates of calcium
• C04B 18/04 - Waste materialsRefuse
• C04B 18/14 - Waste materialsRefuse from metallurgical processes
• C04B 22/06 - OxidesHydroxides

Abstract

A method of making an aluminum-cubic boron nitride (Al-cBN) composite includes mixing an aluminum powder and particles of cubic boron nitride (cBN) in a solvent and sonicating to form an Al-cBN mixture; drying the Al-cBN mixture to form a dried mixture powder; and sintering by pressing and heating the dried mixture powder to form the Al-cBN composite. The aluminum powder has an average particle size of 10 to 100 micrometers (μm). The cBN particles have an average particle size of from 10 to 100 μm, and are uniformly dispersed throughout the Al-cBN composite.

IPC Classes  ?

• C22C 1/05 - Mixtures of metal powder with non-metallic powder
• B22F 3/10 - Sintering only
• C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/645 - Pressure sintering
• C22C 21/00 - Alloys based on aluminium
• C22C 26/00 - Alloys containing diamond

Abstract

A method of enhanced oil recovery in a carbonate rock formation including injecting a mixture into the carbonate rock formation containing an oil composition and extracting the oil composition from the carbonate rock formation. The mixture includes 90-99.99 vol % of an aqueous solution and 0.01-10 vol % of a gemini cationic surfactant based on a total volume of the mixture and 1-2000 parts per million (ppm) of methylene blue, based on a total weight of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and at least 50% less by volume of the gemini cationic surfactant adsorbs onto the carbonate rock formation compared to a method under the same conditions but without the methylene blue.

IPC Classes  ?

• C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants

Abstract

A method for separating bisphenol A (BPA) from an aqueous solution includes contacting an aqueous solution containing BPA with a polyimide polymer on a porous support; and passing at least a portion of the aqueous solution through the polyimide polymer to form a purified water permeate and a BPA residue retentate. The BPA residue retentate is present as a layer on an outside surface of the polyimide polymer. The polyimide polymer contains reacted units of a fluorinated phthalic monomer and one or more amino carboxyl aryl monomers.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 69/10 - Supported membranesMembrane supports
• B01D 71/56 - Polyamides, e.g. polyester-amides

Abstract

A method for coordinating deployment of unmanned aerial vehicles (UAVs) within a designated region involves obtaining constraint data that specifies the operational limitations under which the UAVs are allowed to operate. A cost function is defined, having a set of cost terms corresponding to these constraints, including a term for the energy consumption of each UAV. This energy consumption is the power required by each UAV to travel from a source to a destination along a prescribed flight path. The method includes executing a UAV-capacity maximization function that generates flight paths for the UAVs based on the cost function, which adjusts the flight paths to minimize the total energy consumed while ensuring that the UAVs do not breach the operational constraints.

IPC Classes  ?

• G08G 5/00 - Traffic control systems for aircraft
• G08G 5/04 - Anti-collision systems

Abstract

2 and CO; and regenerating the Ni/FSZ catalyst particles to form a regenerated catalyst and producing a residue gas stream leaving the reactor.

IPC Classes  ?

• C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
• B01J 23/80 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with zinc, cadmium or mercury
• B01J 35/58 - Fabrics or filaments
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment
• B01J 37/12 - Oxidising

Abstract

Carbon nanofiber doped alumina (Al-CNF) supported MoCo catalysts in hydrodesulfurization (HDS), and/or boron doping, e.g., up to 5 wt % of total catalyst weight, can improve catalytic efficiency. Al-CNF-supported MoCo catalysts, (Al-CNF-MoCo), can reduce the sulfur concentration in fuel, esp. liquid fuel, to below the required limit in a 6 h reaction time. Thus, Al-CNF-MoCo has a higher catalytic activity than Al—MoCo, which may be explained by higher mesoporous surface area and better dispersion of MoCo metals on the AlCNF support relative to alumina support. The BET surface area of Al—MoCo may be 75% less than Al-CNF-MoCo, e.g., 166 vs. 200 m2/g. SEM images indicate that the catalyst nanoparticles can be evenly distributed on the surface of the CNF. The surface area of the AlMoCoB5% may be 206 m2/g, which is higher than AlMoCoB0% and AlMoCoB2%, and AlMoCoB5% has the highest HDS activity, removing more than 98% sulfur and below allowed levels.

IPC Classes  ?

• C10G 45/08 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
• B01J 21/04 - Alumina
• B01J 23/75 - Cobalt
• B01J 23/88 - Molybdenum
• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B01J 35/61 - Surface area
• B01J 35/63 - Pore volume
• B01J 35/64 - Pore diameter
• B01J 37/02 - Impregnation, coating or precipitation
• C10G 45/14 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing with moving solid particles

Abstract

A system, method, and non-transitory computer readable medium that perform blind signal estimation for single-input multiple-output systems. The method can include receiving, by the two or more receiver antennas of the receiver, an observed signal comprising the input signal and an additive noise term. The method can then form a data matrix using the observed signals from the two or more receiver antennas. The method can also include computing a singular value decomposition of the data matrix. The singular value decomposition can then be used to generate a parameter matrix. The method can then form a Toeplitz signal matrix using the parameter matrix. The method can estimating the input signal using the Toeplitz signal matrix.

IPC Classes  ?

• H04B 7/0456 - Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting
• H04B 7/0491 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity
• H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station

Abstract

A method for producing a submicron-/nano-jute carbon/epoxy composite anti-corrosion coating is described. The method includes heating a jute stick, grinding the jute stick to form a first powder; pyrolyzing the first powder to form a pyrolyzed carbon; grinding the pyrolyzed carbon to form a second powder; ball milling the second powder under the wet conditions to form a submicron-/nano-jutecarbon; mixing the submicron-/nano-jutecarbon, and an epoxy resin to form a first mixture; mixing a hardener with the first mixture to form a second mixture, and coating the second mixture on a mild steel substrate and curing to form the submicron-/nano-jutecarbon/epoxy composite anti-corrosion coating.

IPC Classes  ?

• C09D 5/08 - Anti-corrosive paints
• C08G 59/24 - Di-epoxy compounds carbocyclic
• C08G 59/50 - Amines
• C08K 3/04 - Carbon
• C09C 1/44 - Carbon
• C09C 3/04 - Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
• C09D 163/00 - Coating compositions based on epoxy resinsCoating compositions based on derivatives of epoxy resins

Abstract

A method of making NiO nanoparticles is described, as well as a method of using NiO nanoparticles as an electrocatalyst component to a porous carbon electrode. The carbon electrode may be made of carbonized filter paper. Together, this carbon-supported NiO electrode may be used for water electrolysis. Using a pamoic acid salt in the NiO nanoparticle synthesis leads to smaller and monodisperse nanoparticles, which support higher current densities.

IPC Classes  ?

• C25B 11/077 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound the compound being a non-noble metal oxide
• B01J 23/755 - Nickel
• B01J 37/08 - Heat treatment
• C01G 53/04 - Oxides
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 11/00 - ElectrodesManufacture thereof not otherwise provided for
• C25B 11/043 - Carbon, e.g. diamond or graphene

Abstract

Carbon nanofiber doped alumina (Al-CNF) supported MoCo catalysts in hydrodesulfurization (HDS), and/or boron doping, e.g., up to 5 wt % of total catalyst weight, can improve catalytic efficiency. Al-CNF-supported MoCo catalysts, (Al-CNF-MoCo), can reduce the sulfur concentration in fuel, esp. liquid fuel, to below the required limit in a 6 h reaction time. Thus, Al-CNF-MoCo has a higher catalytic activity than Al—MoCo, which may be explained by higher mesoporous surface area and better dispersion of MoCo metals on the AlCNF support relative to alumina support. The BET surface area of Al—MoCo may be 75% less than Al-CNF-MoCo, e.g., 166 vs. 200 m2/g. SEM images indicate that the catalyst nanoparticles can be evenly distributed on the surface of the CNF. The surface area of the AlMoCoB 5% may be 206 m2/g, which is higher than AlMoCoB 0% and AlMoCoB 2%, and AlMoCoB 5% has the highest HDS activity, removing more than 98% sulfur and below allowed levels.

IPC Classes  ?

• C10G 45/08 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
• B01J 21/04 - Alumina
• B01J 23/75 - Cobalt
• B01J 23/88 - Molybdenum
• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B01J 35/61 - Surface area
• B01J 35/63 - Pore volume
• B01J 35/64 - Pore diameter
• B01J 37/02 - Impregnation, coating or precipitation
• C10G 45/14 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing with moving solid particles

Abstract

Carbon nanofiber doped alumina (Al-CNF) supported MoCo catalysts in hydrodesulfurization (HDS), and/or boron doping, e.g., up to 5 wt % of total catalyst weight, can improve catalytic efficiency. Al-CNF-supported MoCo catalysts, (Al-CNF-MoCo), can reduce the sulfur concentration in fuel, esp. liquid fuel, to below the required limit in a 6 h reaction time. Thus, Al-CNF-MoCo has a higher catalytic activity than Al—MoCo, which may be explained by higher mesoporous surface area and better dispersion of MoCo metals on the AlCNF support relative to alumina support. The BET surface area of Al—MoCo may be 75% less than Al-CNF-MoCo, e.g., 166 vs. 200 m2/g. SEM images indicate that the catalyst nanoparticles can be evenly distributed on the surface of the CNF. The surface area of the AlMoCoB5% may be 206 m2/g, which is higher than AlMoCoB0% and AlMoCoB2%, and AlMoCoB5% has the highest HDS activity, removing more than 98% sulfur and below allowed levels.

IPC Classes  ?

• C10G 45/08 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
• B01J 21/04 - Alumina
• B01J 23/75 - Cobalt
• B01J 23/88 - Molybdenum
• B01J 35/30 - Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
• B01J 35/40 - Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
• B01J 35/61 - Surface area
• B01J 35/63 - Pore volume
• B01J 35/64 - Pore diameter
• B01J 37/02 - Impregnation, coating or precipitation
• C10G 45/14 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing with moving solid particles

Abstract

A method of enhancing oil recovery from a carbonate reservoir containing a hydrocarbon mixture includes injecting the carbonate reservoir with a sea-water solution comprising a citric acid-based additive to displace the hydrocarbon mixture from the carbonate reservoir thereby forming a hydrocarbon mixture containing sea-water mixture; and separating the hydrocarbon mixture from the hydrocarbon mixture containing sea-water mixture to recover the hydrocarbon mixture. The citric acid-based additive is present in the sea-water solution at a concentration of 1 to 1000 parts per million based on a total number of parts by weight of the sea-water solution. Particles of the citric acid-based additive are adsorbed on surfaces of the carbonate rocks in the carbonate reservoir.

IPC Classes  ?

• C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
• C07C 231/02 - Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
• C09K 8/514 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
• C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
• E21B 43/20 - Displacing by water

Abstract

A method to form a metal matrix composite reinforced with eggshell (ES). The method includes preparing an ES powder, blending and milling the ES powder with at least one metal powder selected from the group consisting of magnesium (Mg), zirconium (Zr) to form a powder mixture, compacting and sintering the powder mixture to form the metal matrix composite. In addition, a Mg—Zr-ES metal matrix composite with improved corrosion resistance, having an amount of magnesium from 95 to 97 wt. %, an amount of zirconium from 1 to 2 wt. %, and an amount of ES from 1 to 4 wt. %, may be used for biomedical applications.

IPC Classes  ?

• B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
• B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
• B22F 1/142 - Thermal or thermo-mechanical treatment
• B22F 3/12 - Both compacting and sintering
• C22C 1/04 - Making non-ferrous alloys by powder metallurgy
• C22C 1/05 - Mixtures of metal powder with non-metallic powder

Abstract

The disclosure provides a method of relaying a transmission between a source device and a destination device in a wireless communication network where one or more unmanned aerial vehicles (UAVs) in a plurality of UAVs have been activated to relay the transmission between the source device and the destination device. The method includes calculating a sum of SNRs associated with the one or more UAVs and determining whether the sum of the SNRs is less than a predetermined threshold. The method further includes, when the sum of the SNRs is less than the predetermined threshold, determining whether there is at least one UAV in the plurality of UAVs that has not been activated to relay the transmission. Also, the method includes, when there is at least one UAV that has not been activated to relay the transmission, activating one of the at least one UAV to relay the transmission.

IPC Classes  ?

• H04W 76/14 - Direct-mode setup
• H04B 17/336 - Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• H04W 84/06 - Airborne or Satellite Networks

Abstract

A frequency reconfigurable (FR) slot-based UHF antenna for use in Cube-Sat is described. The antenna includes a dielectric circuit board, a metallic layer, a meandered slot line formed in the metallic layer, a feed horn is connected to a first edge of the circuit board, a reverse biased varactor diode, a ground terminal connected to the metallic layer and a biasing circuit configured to bias the reverse biased varactor diode. The biasing circuit causes the antenna to resonate in a frequency range of 300 MHz to 450 MHz. The meandered slot line includes a heptagonal path connected to and enclosing a rectangular path. An open end of the feed horn is directed towards the apex of the heptagonal path. The reverse biased varactor diode is connected to the metallic layer across the rectangular path and parallel to a central axis.

IPC Classes  ?

• H01Q 13/10 - Resonant slot antennas
• H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
• H01Q 1/48 - Earthing meansEarth screensCounterpoises
• H01Q 5/307 - Individual or coupled radiating elements, each element being fed in an unspecified way

Abstract

A method of detecting Hg2+ ions in an aqueous solution is described. The method includes contacting the aqueous solution with a metal-organic framework (MOF) chemosensor composite to form a mixture and monitoring a change in an absorption and/or a fluorescence profile of the MOF chemosensor composite in the mixture to determine a presence or absence of Hg2+ ions in the aqueous solution. The MOF chemosensor composite includes fluorescein hydrazide (FH); and a MOF, including nickel as a metal ion and at least one trimesic acid (BTC) ligand. A hydrazide group on the fluorescein hydrazide coordinates to the metal ion of the MOF.

IPC Classes  ?

• G01N 21/3577 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
• G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated

Abstract

A shared aperture multi-band antenna is described. The antenna includes a dielectric circuit board, a folded dipole microstrip antenna, and a lumped inductor. The folded dipole microstrip antenna is formed on a top side of the dielectric circuit board. The microstrip antenna includes two meander paths. The two meander paths enclose a shared aperture therebetween. The lumped inductor is inserted across a first gap near the third edge. A first pair of parallel metallic patches, a second pair of parallel metallic patches, and a third pair of parallel metallic patches are located on the bottom side. The antenna resonates in a dual band frequency range comprising a first resonance band in a range of 0.4 GHz to 0.6 GHz and a second resonance band in a range of 4.7 GHz to 5.8 GHz upon application of an input signal at both a first feed port and a second feed port.

IPC Classes  ?

• H01Q 9/26 - Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
• H01Q 1/27 - Adaptation for use in or on movable bodies
• H01Q 5/321 - Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
• H01Q 5/35 - Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
• H01Q 9/06 - Resonant antennas Details
• H05K 3/12 - Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using printing techniques to apply the conductive material

Abstract

A system, method, and non-transitory computer readable medium for ichnological classification of geological images are described. The method of ichnological classification of geological images includes receiving a geological image by a computing device having circuitry including a memory storing program instructions and one or more processors configured to perform the program instructions, formatting the geological image to generate a formatted geological image, applying the formatted geological image to a deep convolutional neural network (DCNN) trained to classify bioturbation indices, and matching the formatted geological image to a bioturbation index class.

IPC Classes  ?

• G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects

Abstract

A system, method, and non-transitory computer readable medium for in-field seismic data compression. The system includes geophones each having a 1-bit adaptive delta modulation for converting analog seismic signals to a modulated signal and transmitting the modulated signal, and a data collection center having a 1D convolutional neural network for receiving and compressing the transmitted modulated signal. The 1D CNN is configured to suppress quantization and random noise in the modulated signal.

IPC Classes  ?

• H03M 3/02 - Delta modulation, i.e. one-bit differential modulation
• H03M 7/30 - CompressionExpansionSuppression of unnecessary data, e.g. redundancy reduction
• H03M 7/34 - Conversion to or from delta modulation, i.e. one-bit differential modulation adaptive

Abstract

A method of removing hydrogen sulfide from a subterranean geological formation includes injecting a drilling fluid suspension in the subterranean geological formation. The drilling fluid suspension has a pH of 10 or more and includes a layered triple hydroxide material, including manganese, copper, and aluminum, in an amount of 0.01 to 1.5 percent by weight of the drilling fluid suspension. The method further includes circulating the drilling fluid suspension in the subterranean geological formation and forming a water-based mud and scavenging the hydrogen sulfide from the subterranean geological formation by reacting the hydrogen sulfide with the layered triple hydroxide material in the water-based mud.

IPC Classes  ?

• C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
• B01D 53/52 - Hydrogen sulfide
• B01D 53/78 - Liquid phase processes with gas-liquid contact
• C01G 45/00 - Compounds of manganese
• C09K 8/03 - Specific additives for general use in well-drilling compositions
• E21B 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
• E21B 41/02 - Equipment or details not covered by groups in situ inhibition of corrosion in boreholes or wells

Abstract

The perovskite solar cell (PSC) includes a first layer containing a conducting material coated glass plate as a substrate, a second layer containing copper doped nickel oxide, a third layer containing a perovskite, a fourth layer containing nitrogen (N)-doped graphene quantum dots, a fifth layer containing phenyl-C61-butyric acid methyl ester and a top layer including conductive layer. A method for producing the perovskite solar cell is also discussed.

IPC Classes  ?

• H10K 30/10 - Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• C01B 32/182 - Graphene
• G02F 1/017 - Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
• H01F 1/42 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of organic or organo-metallic materials
• H01L 29/66 - Types of semiconductor device
• H01L 31/0352 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
• H10K 71/12 - Deposition of organic active material using liquid deposition, e.g. spin coating
• H10K 71/40 - Thermal treatment, e.g. annealing in the presence of a solvent vapour
• H10K 85/20 - Carbon compounds, e.g. carbon nanotubes or fullerenes
• H10K 102/00 - Constructional details relating to the organic devices covered by this subclass

Abstract

A virtual memory system for managing a virtual memory page table for a central processing unit and a system of encoding a virtual address (VA) is disclosed. The system includes a memory storing an encoded virtual address, a virtual page number having a settable bitfield that is set according to page size and offset, and a virtual memory. The virtual memory addressing circuitry is configured with a zero detector logic circuit and a virtual page number (VPN) multiplexer. The zero detector logic circuit is configured to read bits of the encoded virtual address and outputs the page size. The virtual page number (VPN) multiplexer is configured to select the virtual page number based on the page size and outputs an index to a page table.

IPC Classes  ?

• G06F 12/1009 - Address translation using page tables, e.g. page table structures
• G06F 12/1027 - Address translation using associative or pseudo-associative address translation means, e.g. translation look-aside buffer [TLB]

Abstract

A method for enhancing adhesion of a curable composition to a cement-based object includes applying a graphene oxide (GO) containing dispersion on a surface of the cement-based object thereby forming a GO-treated surface on the cement-based object. The method includes disposing the curable composition on the GO-treated surface of the cement-based object. The method includes curing the curable composition by heating thereby forming a GO interfacial layer and an epoxy resin layer. The GO interfacial layer is between the surface of the cement-based object and the epoxy resin layer. The curable composition includes an epoxy monomer and an amine curing agent. The GO interfacial layer has a thickness of from 0.1 to 10 nanometers (nm).

IPC Classes  ?

• C04B 41/52 - Multiple coating or impregnating
• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• C04B 41/48 - Macromolecular compounds
• C04B 41/50 - Coating or impregnating with inorganic materials
• C04B 41/63 - Macromolecular compounds
• C04B 41/65 - Coating or impregnating with inorganic materials
• C04B 41/71 - Coating or impregnating for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
• C09D 1/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 7/63 - Additives non-macromolecular organic
• C09D 163/00 - Coating compositions based on epoxy resinsCoating compositions based on derivatives of epoxy resins

Abstract

A method for synthesizing carbon quantum dots (CQDs) including reacting a mixture of macroalgae and ethanol hydrothermally in an autoclave at a reaction temperature between 150 degrees Celsius (° C.) and 250° C. to form a suspension. The method further includes separating the CQDs from the suspension. The CQDs have a size of 1 to 5 nanometers (nm). The CQDs have a Stokes shift of at least 80 nm at an excitation wavelength of 270-410 nm.

IPC Classes  ?

• C09K 11/65 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing carbon
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C01B 32/15 - Nanosized carbon materials

Abstract

2S from the gas composition by the composite mixture to form a purified gas composition. The composite contains a CuMnAl layered triple oxide (LTO) and zeolitic imidazolate framework-8 (ZIF-8) nanoparticles. The ZIF-67 nanoparticles are dispersed between layers of the CuMnAl LTO.

IPC Classes  ?

• B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material

Abstract

A method for synthesizing carbon quantum dots (CQDs) including reacting a mixture of macroalgae and ethanol hydrothermally in an autoclave at a reaction temperature between 150 degrees Celsius (° C.) and 250° C. to form a suspension. The method further includes separating the CQDs from the suspension. The CQDs have a size of 1 to 5 nanometers (nm). The CQDs have a Stokes shift of at least 80 nm at an excitation wavelength of 270-410 nm.

IPC Classes  ?

• C09K 11/65 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing carbon
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C01B 32/15 - Nanosized carbon materials

Abstract

A method for synthesizing carbon quantum dots (CQDs) including reacting a mixture of macroalgae and ethanol hydrothermally in an autoclave at a reaction temperature between 150 degrees Celsius (° C.) and 250° C. to form a suspension. The method further includes separating the CQDs from the suspension. The CQDs have a size of 1 to 5 nanometers (nm). The CQDs have a Stokes shift of at least 80 nm at an excitation wavelength of 270-410 nm.

IPC Classes  ?

• C09K 11/65 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing carbon
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C01B 32/15 - Nanosized carbon materials

Abstract

A method of removing hydrogen sulfide from a subterranean geological formation includes injecting a drilling fluid suspension in the subterranean geological formation. The drilling fluid suspension has a pH of 10 or more and includes a layered triple hydroxide material, including manganese, zinc, and iron, in an amount of 0.01 to 0.5 percent by weight of the drilling fluid suspension. The method further includes circulating the drilling fluid suspension in the subterranean geological formation and forming a water-based mud and scavenging the hydrogen sulfide from the subterranean geological formation by reacting the hydrogen sulfide with the layered triple hydroxide material in the water-based mud.

IPC Classes  ?

• C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates

Abstract

A method of enhanced oil recovery in a carbonate rock formation including, injecting a mixture into the carbonate rock formation containing an oil composition, and extracting the oil composition from the carbonate rock formation. The mixture contains 89-98.9 vol % of an aqueous solution, 0.01-1 vol % of a gemini cationic surfactant, and 0.1-10 vol % of formic acid based on a total volume of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and wherein at least 90% less by volume of the gemini cationic surfactant adsorbs onto the carbonate rock formation compared to a method under the same conditions but without the formic acid.

IPC Classes  ?

• C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
• C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

A method of separating a gas mixture, including contacting the gas mixture with a membrane and passing a portion of the gas mixture through the membrane. The portion of the gas mixture that passes through the membrane includes carbon dioxide. The membrane includes a poly(ether-block-amide) (PEBAX) and a covalent organic framework (COF). The COF is an optionally substituted COF-316 and the COF is dispersed in a matrix of the PEBAX to form the membrane. The membrane includes 0.1-5 wt. % of the COF relative to a total weight of the membrane.

IPC Classes  ?

• B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties

Abstract

A method for detecting internal coating defects in a pipe sample with an electromagnetic acoustic transducer sensor. The method includes recording a plurality of Lamb mode scans of the pipe sample with the EMAT sensor, where each Lamb mode scan is measured along a length of the pipe sample in axial alignment with the pipe sample; and processing the Lamb mode scans by applying a singular spectrum analysis to the Lamb mode scans to generate data from which the internal coating defects in the pipe sample are identified. The Lamb mode scans are at a frequency from dispersion curve of from 0.3 to 2 MHz, at a frequency of from 0.4 MHz to 2 MHz, a group velocity of from 1 mm/μs to 3 mm/μs, a phase velocity of from 5 mm/μs to 25 mm/μs, and a wave count of from 3 to 10.

IPC Classes  ?

• G01N 29/24 - Probes
• G01N 29/11 - Analysing solids by measuring attenuation of acoustic waves

Abstract

An electrode includes a transparent substrate, a lead (Pb) layer at least partially covering a surface of the transparent substrate. The Pb layer includes irregular octahedral-shaped Pb particles having an average particle size of from 0.5 to 3 micrometers (μm). The irregular octahedral-shaped Pb particles are uniformly distributed on a surface of the Pb layer. A method of making the electrode is also provided. A method for electrochemical carbon dioxide (CO2) reduction (CO2RR).

IPC Classes  ?

• C25B 11/075 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound
• C25B 1/23 - Carbon monoxide or syngas
• C25B 3/07 - Oxygen containing compounds
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 11/067 - Inorganic compound e.g. ITO, silica or titania
• C25B 15/02 - Process control or regulation

Abstract

A method for detecting internal coating defects in a pipe sample with an electromagnetic acoustic transducer sensor. The method includes recording a plurality of Lamb mode scans of the pipe sample with the EMAT sensor, where each Lamb mode scan is measured along a length of the pipe sample in axial alignment with the pipe sample; and processing the Lamb mode scans by applying a singular spectrum analysis to the Lamb mode scans to generate data from which the internal coating defects in the pipe sample are identified. The Lamb mode scans are at a frequency from dispersion curve of from 0.3 to 2 MHz, at a frequency of from 0.4 MHz to 2 MHz, a group velocity of from 1 mm/μs to 3 mm/μs, a phase velocity of from 5 mm/μs to 25 mm/μs, and a wave count of from 3 to 10.

IPC Classes  ?

• G01N 29/24 - Probes
• G01N 29/11 - Analysing solids by measuring attenuation of acoustic waves

Abstract

A method of generating oxygen including applying a potential of greater than 0 to 2.0 V to an electrochemical cell that is at least partially submerged in an aqueous solution such that on applying the potential the aqueous solution is oxidized thereby forming oxygen. The electrochemical cell includes an electrocatalyst and a counter electrode. The electrocatalyst includes a nickel foam substrate and a layer of particles of manganese oxide having a formula of MnxOy on a surface of the nickel foam substrate, where x is an integer from 1 to 7, and where y is an integer from 1 to 13. The particles of MnO have a spherical shape with an average diameter of 5-15 nanometers (nm) and are aggregated with an average aggregate size of 500-1,000 nm in the shape of a cauliflower.

IPC Classes  ?

• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 11/031 - Porous electrodes
• C25B 11/054 - Electrodes comprising electrocatalysts supported on a carrier
• C25B 11/061 - Metal or alloy
• C25B 11/079 - Manganese dioxideLead dioxide

Abstract

Aspects of the present disclosure are directed to a nanocomposite. The nanocomposite includes graphene oxide and a zeolitic imidazolate framework, wherein the zeolitic imidazolate framework has a phase I, II, or III structure. The nanocomposite of the present disclosure finds use in water filtration and heavy metal ion removal applications.

IPC Classes  ?

• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/18 - Synthetic zeolitic molecular sieves
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C01B 39/02 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereofDirect preparation thereofPreparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactantsAfter-treatment thereof

Abstract

A method for detecting internal coating defects in a pipe sample with an electromagnetic acoustic transducer sensor. The method includes recording a plurality of Lamb mode scans of the pipe sample with the EMAT sensor, where each Lamb mode scan is measured along a length of the pipe sample in axial alignment with the pipe sample; and processing the Lamb mode scans by applying a singular spectrum analysis to the Lamb mode scans to generate data from which the internal coating defects in the pipe sample are identified. The Lamb mode scans are at a frequency from dispersion curve of from 0.3 to 2 MHz, at a frequency of from 0.4 MHz to 2 MHz, a group velocity of from 1 mm/p s to 3 mm/μs, a phase velocity of from 5 mm/μs to 25 mm/μs, and a wave count of from 3 to 10.

IPC Classes  ?

• G01N 29/24 - Probes
• G01N 29/11 - Analysing solids by measuring attenuation of acoustic waves

Abstract

2S from the gas composition by the mud composition to form a purified gas composition. The mud composition contains a CuMnAl layered triple oxide (LTO) and a base mud.

IPC Classes  ?

• B01D 53/52 - Hydrogen sulfide
• B01D 53/80 - Semi-solid phase processes, i.e. by using slurries

Abstract

A wind turbine for a region with an average wind speed of less than 5 m/s includes a rotor comprising a rotor hub and multiple blades connected to the rotor hub. The rotor is configured for rotation with a starting torque and a torque-magnitude-profile-over-time. Each blade has multiple sections distributed between a blade root and a blade tip, and each section has a chord length and an angle of twist. The chord length is a first non-dimensional value from 0 to 1 and the angle of twist is specified in radian. The first and second non-dimensional values are convertible to dimensional values in meters by multiplying the first non-dimensional values by a maximum chord length.

IPC Classes  ?

• F03D 1/06 - Rotors

Abstract

A system, computer-readable storage medium and method of reflection seismic survey in a wireless seismic network within a survey area is described. The method includes detecting, in each of a plurality of wireless seismic sensor nodes, seismic reflection signals from a seismic energy source; recording, in each of a plurality of wireless geophones, detected seismic signals; transmitting, by the geophones, the recorded seismic signals as digital data, using a combination of Orthogonal Frequency-Division Multiple Access (OFDMA) and Time Division Multiple Access (TDMA), to a central data receiving device; changing the seismic energy source location for seismic reflection; and repeating the detecting, recording and transmitting a number of times for each change in seismic energy source.

IPC Classes  ?

• G01V 1/22 - Transmitting seismic signals to recording or processing apparatus
• H04B 7/26 - Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
• H04L 27/26 - Systems using multi-frequency codes

Abstract

A system, computer-readable storage medium and method of reflection seismic survey in a wireless seismic network within a survey area is described. The method includes detecting, in each of a plurality of wireless seismic sensor nodes, seismic reflection signals from a seismic energy source; recording, in each of a plurality of wireless geophones, detected seismic signals; transmitting, by the geophones, the recorded seismic signals as digital data, using a combination of Orthogonal Frequency-Division Multiple Access (OFDMA) and Time Division Multiple Access (TDMA), to a central data receiving device; changing the seismic energy source location for seismic reflection; and repeating the detecting, recording and transmitting a number of times for each change in seismic energy source.

IPC Classes  ?

• G01V 1/22 - Transmitting seismic signals to recording or processing apparatus
• H04B 7/26 - Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
• H04L 27/26 - Systems using multi-frequency codes

Abstract

A method of generating oxygen including applying a potential of greater than 0 to 2.0V to an electrochemical cell, where the electrochemical cell is at least partially submerged in an aqueous solution, and where on applying the potential the aqueous solution is oxidized thereby forming oxygen. The electrochemical cell includes an electrocatalyst; and a counter electrode. The electrocatalyst includes a nickel foam substrate; and a layer of particles of FeNiOx on a surface of the nickel foam substrate, wherein x=3-4. The particles of FeNiOx have a nanorod shape with an average diameter of 100-500 nanometers (nm) and a length longer than 500 nm. The terminal end of the nanorod shape has a cap with a hemispherical shape having a diameter larger than the average diameter of the nanorod shape.

IPC Classes  ?

• C25B 11/052 - Electrodes comprising one or more electrocatalytic coatings on a substrate
• C23C 16/40 - Oxides
• C23C 16/448 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 9/17 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof
• C25B 11/031 - Porous electrodes
• C25B 11/061 - Metal or alloy
• C25B 11/077 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound the compound being a non-noble metal oxide

Abstract

A filtration membrane including a first layer having a triamine-functionalized polysilicate mesoporous material, a second layer including a polysulfone; and a third layer including a polyester terephthalate is described. An orthosilicate group of the triamine-functionalized polysilicate mesoporous material is bonded to a silicon atom of a silicon-containing triamine to form a triamine-functionalized polysilicate backbone, wherein the silicon-containing triamine and one or more tetramines are covalently crosslinked with terephthaloyl chloride to form a polyamide, and wherein the triamine-functionalized polysilicate mesoporous material has a hierarchical structure of MCM-41. The membrane is adapted for use selected from the use group consisting of oil and water separation, water treatment, desalination, and pharmaceutical filtration.

IPC Classes  ?

• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• B01D 61/02 - Reverse osmosisHyperfiltration
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 69/12 - Composite membranesUltra-thin membranes
• B01D 71/48 - Polyesters
• B01D 71/56 - Polyamides, e.g. polyester-amides
• B01D 71/68 - PolysulfonesPolyethersulfones
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Abstract

This disclosure relates to methods of forming a zeolite composition, the method comprising calcining one or more clay mineral compositions to form metakaolin, wherein the one or more clay mineral compositions may comprise greater than or equal to 10 wt. % halloysite, forming a slurry by combining at least the metakaolin, a shape selective zeolite, a basic compound, silica particles, and a templating agent, hydrothermally treating the slurry to form a hydrothermal product, calcining the hydrothermal product to form a zeolite product, combining the zeolite product and at least one metal precursor, wherein the at least one metal precursor may comprise a manganese precursor, a phosphorous precursor, or both a manganese precursor and a phosphorous precursor to form a zeolite composition comprising manganese, phosphorus, or both manganese and phosphorous.

IPC Classes  ?

• B01J 29/48 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam
• B01J 37/30 - Ion-exchange

Abstract

This disclosure relates to methods of forming a ZSM-5 zeolite, the method comprising calcining one or more clay mineral compositions to form metakaolin, wherein the one or more clay mineral compositions may comprise greater than or equal to 10 wt.% halloysite; forming a slurry by combining at least the metakaolin, ZSM-5 zeolite seeds, a basic compound, and a silica source; hydrothermally treating the slurry to form a hydrothermal product; and calcining the hydrothermal product to form a ZSM-5 zeolite. This disclosure also relates processes of cracking a hydrocarbon feed comprising contacting the hydrocarbon feed with steam in the presence of a cracking catalyst comprising the ZSM-5 zeolite in a reactor under reaction conditions sufficient to cause at least a portion of the hydrocarbon feed to undergo one or more cracking reactions to produce a cracking effluent comprising light olefins, light aromatic compounds, or both.

IPC Classes  ?

• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• C01B 39/38 - Type ZSM-5

Abstract

This disclosure relates to methods of forming a zeolite composition, the method comprising calcining one or more clay mineral compositions to form metakaolin, wherein the one or more clay mineral compositions may comprise greater than or equal to 10 wt.% halloysite, forming a slurry by combining at least the metakaolin, a shape selective zeolite, a basic compound, silica particles, and a templating agent, hydrothermally treating the slurry to form a hydrothermal product, calcining the hydrothermal product to form a zeolite product, combining the zeolite product and at least one metal precursor, wherein the at least one metal precursor may comprise a manganese precursor, a phosphorous precursor, or both a manganese precursor and a phosphorous precursor to form a zeolite composition comprising manganese, phosphorus, or both manganese and phosphorous.

IPC Classes  ?

• B01J 21/16 - Clays or other mineral silicates
• B01J 23/34 - Manganese
• B01J 27/187 - PhosphorusCompounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with manganese, technetium or rhenium
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment
• C01B 39/40 - Type ZSM-5 using at least one organic template directing agent
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam

Abstract

A system, computer-readable storage medium and method of reflection seismic survey in a wireless seismic network within a survey area is described. The method includes detecting, in each of a plurality of wireless seismic sensor nodes, seismic reflection signals from a seismic energy source; recording, in each of a plurality of wireless geophones, detected seismic signals; transmitting, by the geophones, the recorded seismic signals as digital data, using a combination of Orthogonal Frequency-Division Multiple Access (OFDMA) and Time Division Multiple Access (TDMA), to a central data receiving device; changing the seismic energy source location for seismic reflection; and repeating the detecting, recording and transmitting a number of times for each change in seismic energy source.

IPC Classes  ?

• G01V 1/22 - Transmitting seismic signals to recording or processing apparatus
• H04B 7/26 - Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
• H04L 27/26 - Systems using multi-frequency codes

Abstract

This disclosure relates to methods of forming a ZSM-5 zeolite, the method comprising calcining one or more clay mineral compositions to form metakaolin, wherein the one or more clay mineral compositions may comprise greater than or equal to 10 wt. % halloysite; forming a slurry by combining at least the metakaolin, ZSM-5 zeolite seeds, a basic compound, and a silica source; hydrothermally treating the slurry to form a hydrothermal product; and calcining the hydrothermal product to form a ZSM-5 zeolite. This disclosure also relates processes of cracking a hydrocarbon feed comprising contacting the hydrocarbon feed with steam in the presence of a cracking catalyst comprising the ZSM-5 zeolite in a reactor under reaction conditions sufficient to cause at least a portion of the hydrocarbon feed to undergo one or more cracking reactions to produce a cracking effluent comprising light olefins, light aromatic compounds, or both.

IPC Classes  ?

• C01B 39/38 - Type ZSM-5
• B01J 6/00 - CalciningFusing
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 35/10 - Solids characterised by their surface properties or porosity
• C10G 47/02 - Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, to obtain lower boiling fractions characterised by the catalyst used

Abstract

A thermal method of forming ferric oxide nano/microparticles with predominant morphology is described using different solvents. Methods of using the Fe3O4 nano/microparticles as catalysts in the reduction of nitro compounds with sodium borohydride to the corresponding amines and decomposition of ammonium salts.

IPC Classes  ?

• B01J 23/745 - Iron
• B01J 35/23 - Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
• B01J 35/50 - Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
• B01J 35/51 - Spheres
• B01J 37/08 - Heat treatment
• C01G 49/06 - Ferric oxide [Fe2O3]
• C07C 213/02 - Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups

Abstract

4 disposed activated carbon. The magnetic cores have activated carbonyl groups on the surface. A process for removing organic dyes, such as methyl red, as well as heavy metal ions from a polluted aqueous solution or an industrial wastewater utilizing the composite is introduced. A method of synthesizing the polymer/activated carbon composites is also specified.

IPC Classes  ?

• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/26 - Synthetic macromolecular compounds
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C08G 83/00 - Macromolecular compounds not provided for in groups
• C01B 32/354 - After-treatment
• C02F 101/22 - Chromium or chromium compounds, e.g. chromates
• C02F 101/30 - Organic compounds

Abstract

4 disposed activated carbon. The magnetic cores have activated carbonyl groups on the surface. A process for removing organic dyes, such as methyl red, as well as heavy metal ions from a polluted aqueous solution or an industrial wastewater utilizing the composite is introduced. A method of synthesizing the polymer/activated carbon composites is also specified.

IPC Classes  ?

• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/26 - Synthetic macromolecular compounds
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C08G 83/00 - Macromolecular compounds not provided for in groups
• C01B 32/354 - After-treatment
• C02F 101/22 - Chromium or chromium compounds, e.g. chromates
• C02F 101/30 - Organic compounds

Abstract

A method of storing hydrogen (H2) gas in a subsurface formation having an injection well, a production well and a heat well. The method includes injecting a first fluid stream into the subsurface formation via the at least one injection well to form a first composition containing a gas-phase mixture, a liquid-phase mixture and a solid matrix; injecting a H2-containing gas stream into the subsurface formation via the at least one injection well to form a gas mixture containing H2 gas; and heating and pressurizing the subsurface formation containing the gas mixture via the at least one heat well thereby achieving a storage condition and maintaining the storage condition to store the H2 in the subsurface formation.

IPC Classes  ?

• E21B 41/00 - Equipment or details not covered by groups
• B65G 5/00 - Storing fluids in natural or artificial cavities or chambers in the earth

Abstract

A method of generating hydrogen gas including applying a potential of greater than 0 to 1.0 volts (V) to an electrochemical cell. The electrochemical cell is at least partially submerged in an aqueous solution. On applying the potential the aqueous solution is reduced thereby forming hydrogen gas. The electrochemical cell includes an electrocatalyst and a counter electrode. The electrocatalyst includes a substrate, strontium titanate (SrTiO3) nanoparticles, and cadmium selenide (CdSe) nanoparticles. The SrTiO3 nanoparticles have a substantially spherical shape. The CdSe nanoparticles have a polygon shape. The CdSe nanoparticles are distributed within a network of the SrTiO3 nanoparticles on the surface of the substrate.

IPC Classes  ?

• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water

Abstract

4 disposed activated carbon. The magnetic cores have activated carbonyl groups on the surface. A process for removing organic dyes, such as methyl red, as well as heavy metal ions from a polluted aqueous solution or an industrial wastewater utilizing the composite is introduced. A method of synthesizing the polymer/activated carbon composites is also specified.

IPC Classes  ?

• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/26 - Synthetic macromolecular compounds
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C08G 83/00 - Macromolecular compounds not provided for in groups
• C01B 32/354 - After-treatment
• C02F 101/22 - Chromium or chromium compounds, e.g. chromates
• C02F 101/30 - Organic compounds

Abstract

A fourth order orbital angular momentum (OAM) four patch antenna is described. The antenna includes a dielectric substrate, a metallic sheet, and a four patch antenna. The four patch antenna includes a circular ring path patch, a first feed branch patch, and a second feed branch patch. The first feed branch patch is connected to the circular ring path patch. The second feed branch patch includes a straight leg which extends radially from the circular ring path patch and a curved leg having a first end connected to the straight leg and a second leg connected to the first end of feed port patch. The antenna is configured to resonate in a fourth order OAM mode at a frequency of 5.12 GHz when an electrical input signal is applied to a second end of the feed port patch.

IPC Classes  ?

• H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
• B41M 5/00 - Duplicating or marking methodsSheet materials for use therein
• H01Q 9/04 - Resonant antennas

Abstract

A supercapacitor including a gel electrolyte and two electrodes having a substrate, date stone activated carbon, a conductive carbon compound different from the date stone activated carbon, and a binding compound. A mixture of the date stone activated carbon, the conductive carbon compound, and the binding compound partially coats a surface of the substrate. The two electrodes are assembled in a symmetrical layered configuration with the surfaces coated with the mixture facing each other. The gel electrolyte is present between the surfaces coated with the mixture to form the supercapacitor. The gel electrolyte is a mixture of H2SO4, polyvinyl alcohol, and anthraquinone. Particles of the date stone activated carbon have a nanosheet morphology, and the nanosheets are stacked on top of each other to form a hierarchical structure.

IPC Classes  ?

• H01G 11/34 - Carbon-based characterised by carbonisation or activation of carbon
• H01G 11/24 - Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosityElectrodes characterised by the structural features of powders or particles used therefor
• H01G 11/36 - Nanostructures, e.g. nanofibres, nanotubes or fullerenes
• H01G 11/56 - Solid electrolytes, e.g. gelsAdditives therein
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes

Abstract

A system for performing a seismic survey of a geological formation is described. The system includes a seismic transducer, an array of seismic sensors, a transmitter, a receiver, and a computing device. The seismic transducer generates a seismic source wavelet within a geological formation. The array of seismic sensors generates seismic traces. The transmitter transmits the seismic traces. The receiver receives the seismic traces and generates a set of seismic time-series traces. A quantizer compresses the set of seismic time series traces by randomly selecting a subset of samples of the set of seismic time-series traces. A trained long short-term memory (LSTM) neural network based autoencoder deconvolves the randomly selected subset of samples and generates a deconvolved randomly selected subset of samples. The computing device reconstructs the seismic waves reflected from the geological formation from the deconvolved randomly selected subset of samples.

IPC Classes  ?

• G01V 1/30 - Analysis

Abstract

2.

IPC Classes  ?

• B01J 23/755 - Nickel
• B01J 8/06 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds in tube reactorsChemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds the solid particles being arranged in tubes
• B01J 23/745 - Iron
• B01J 35/51 - Spheres
• B01J 37/03 - PrecipitationCo-precipitation
• B01J 37/04 - Mixing
• B01J 37/18 - Reducing with gases containing free hydrogen
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
• C01B 32/162 - Preparation characterised by catalysts

Abstract

2S-containing gas composition by the drilling fluid composition.

IPC Classes  ?

• E21B 21/06 - Arrangements for treating drilling fluids outside the borehole
• C09K 8/03 - Specific additives for general use in well-drilling compositions
• E21B 41/02 - Equipment or details not covered by groups in situ inhibition of corrosion in boreholes or wells

Abstract

A drilling fluid composition includes a base fluid; at least one additive selected from the group consisting of an anti-foaming agent, a fluid-loss additive, a viscosity modifier, a shale stabilizer, an alkali compound, a bridging agent, and a weighting agent; and 0.01 to 0.5 weight percentage (wt. %) of particles of steel slag, based on a total weight of the drilling fluid composition. A method for reducing a hydrogen sulfide (H2S) content of a H2S-containing subterranean formation. A process for removing H2S from a H2S-containing gas composition by the drilling fluid composition.

IPC Classes  ?

• C09K 8/03 - Specific additives for general use in well-drilling compositions
• E21B 21/06 - Arrangements for treating drilling fluids outside the borehole
• E21B 41/02 - Equipment or details not covered by groups in situ inhibition of corrosion in boreholes or wells

Abstract

A body area network (BAN) architecture including a plurality of ultra-wideband (UWB) BAN node devices, a control node device, and a remote node device is described. The plurality of UWB BAN node devices measures real-time physiological data of a patient and transmits the physiological data to the control node device using UWB signals. The control node device encodes the UWB signals using an spectral amplitude coding-optical code division multiple access (SAC-OCDMA) encoder, modulates the encoded UWB signals using an on-off keying (OOK) scheme, combines the modulated UWB signals into an optical signal using an optical coupler, and transmits the combined optical signal through a free space optical (FSO) link to the remote node device. The remote node device decodes the combined optical signal using an SAC-OCDMA decoder, converts the decoded optical signal into an electrical signal, and analyzes the physiological data based on the electrical signal.

IPC Classes  ?

• H04B 13/00 - Transmission systems characterised by the medium used for transmission, not provided for in groups
• H04B 1/7163 - Spread spectrum techniques using impulse radio
• H04B 10/11 - Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Abstract

A body area network (BAN) architecture including a plurality of ultra-wideband (UWB) BAN node devices, a control node device, and a remote node device is described. The plurality of UWB BAN node devices measures real-time physiological data of a patient and transmits the physiological data to the control node device using UWB signals. The control node device encodes the UWB signals using an spectral amplitude coding-optical code division multiple access (SAC-OCDMA) encoder, modulates the encoded UWB signals using an on-off keying (OOK) scheme, combines the modulated UWB signals into an optical signal using an optical coupler, and transmits the combined optical signal through a free space optical (FSO) link to the remote node device. The remote node device decodes the combined optical signal using an SAC-OCDMA decoder, converts the decoded optical signal into an electrical signal, and analyzes the physiological data based on the electrical signal.

IPC Classes  ?

• H04B 13/00 - Transmission systems characterised by the medium used for transmission, not provided for in groups
• H04B 1/7163 - Spread spectrum techniques using impulse radio
• H04B 10/11 - Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Abstract

A tunable grounded positive and negative active inductor simulator and impedance multiplier circuit and a method for implementing the tunable grounded positive and negative active inductor simulator and impedance multiplier circuit are described. The circuit includes one second generation voltage-mode conveyor circuit (VCII+), a voltage source configured to generate an output current, a first impedance, a second impedance and an operational transconductance amplifier OTA. The first impedance is connected between the voltage source and the positive VCII+ input terminal, Y. The second impedance is connected between the second output terminal and a ground terminal. The OTA is configured to have a transconductance gain. The circuit is configured to be tuned by a selection of values for the first and second impedances.

IPC Classes  ?

• H03H 11/48 - One-port networks simulating reactances
• H03H 11/40 - Impedance converters
• H03H 11/44 - Negative impedance converters

Abstract

A method of making a bimetallic nanoalloy composite includes mixing and dissolving a nickel salt, a cobalt salt, and an aromatic carboxylic acid in a first solvent to form a first mixture; mixing acetic acid with the first mixture and heating at a temperature of 150 to 200 degrees Celsius (° C.) form a second mixture; washing the second mixture with at least one organic solvent and drying to form a bimetallic metal-organic framework (CoNiBTC); heating the CoNiBTC at a temperature of 600 to 900° C. under a nitrogen stream to form a pyrolyzed composite; and cooling the pyrolyzed composite and exposing to a gas mixture to form the bimetallic nanoalloy composite. A method of making a benzimidazole compound. A method of making methane from CO2.

IPC Classes  ?

• B01J 23/755 - Nickel
• B01J 21/18 - Carbon
• B01J 23/75 - Cobalt
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 35/10 - Solids characterised by their surface properties or porosity
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/03 - PrecipitationCo-precipitation
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment
• B01J 37/16 - Reducing
• C07C 1/12 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of carbon from carbon dioxide with hydrogen
• C07D 235/08 - Radicals containing only hydrogen and carbon atoms

Abstract

A method of fixating carbon dioxide (CO2) to form a substituted oxazolidinone is described. The method includes mixing a metal-organic framework (MOF), at least one epoxide, and at least one aromatic amine to form a mixture. The method further includes contacting the mixture with a gas stream containing CO2 to react the CO2 in the gas stream with the epoxide and the aromatic amine to form a substituted oxazolidinone. The MOF is a MIL-68(In)-X MOF. X is of formula (I): A method of fixating carbon dioxide (CO2) to form a substituted oxazolidinone is described. The method includes mixing a metal-organic framework (MOF), at least one epoxide, and at least one aromatic amine to form a mixture. The method further includes contacting the mixture with a gas stream containing CO2 to react the CO2 in the gas stream with the epoxide and the aromatic amine to form a substituted oxazolidinone. The MOF is a MIL-68(In)-X MOF. X is of formula (I): A method of fixating carbon dioxide (CO2) to form a substituted oxazolidinone is described. The method includes mixing a metal-organic framework (MOF), at least one epoxide, and at least one aromatic amine to form a mixture. The method further includes contacting the mixture with a gas stream containing CO2 to react the CO2 in the gas stream with the epoxide and the aromatic amine to form a substituted oxazolidinone. The MOF is a MIL-68(In)-X MOF. X is of formula (I): where at least one of R1 to R4 is an amine-containing group, and R1 to R4 are independently an amine-containing group or a hydrogen.

IPC Classes  ?

• C07D 263/04 - Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
• C07D 239/00 - Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
• C07D 263/06 - Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with hydrocarbon radicals, substituted by oxygen atoms, attached to ring carbon atoms
• C07D 263/58 - BenzoxazolesHydrogenated benzoxazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2

Abstract

A body area network (BAN) architecture including a plurality of ultra-wideband (UWB) BAN node devices, a control node device, and a remote node device is described. The plurality of UWB BAN node devices measures real-time physiological data of a patient and transmits the physiological data to the control node device using UWB signals. The control node device encodes the UWB signals using an spectral amplitude coding-optical code division multiple access (SAC-OCDMA) encoder, modulates the encoded UWB signals using an on-off keying (OOK) scheme, combines the modulated UWB signals into an optical signal using an optical coupler, and transmits the combined optical signal through a free space optical (FSO) link to the remote node device. The remote node device decodes the combined optical signal using an SAC-OCDMA decoder, converts the decoded optical signal into an electrical signal, and analyzes the physiological data based on the electrical signal.

IPC Classes  ?

• H04B 13/00 - Transmission systems characterised by the medium used for transmission, not provided for in groups
• H04B 1/7163 - Spread spectrum techniques using impulse radio
• H04B 10/11 - Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Abstract

A tunable grounded positive and negative active inductor simulator and impedance multiplier circuit and a method for implementing the tunable grounded positive and negative active inductor simulator and impedance multiplier circuit are described. The circuit includes one second generation voltage-mode conveyor circuit (VCII+), a voltage source configured to generate an output current, a first impedance, a second impedance and an operational transconductance amplifier OTA. The first impedance is connected between the voltage source and the positive VCII+ input terminal, Y. The second impedance is connected between the second output terminal and a ground terminal. The OTA is configured to have a transconductance gain. The circuit is configured to be tuned by a selection of values for the first and second impedances.

IPC Classes  ?

• H03H 11/48 - One-port networks simulating reactances
• H03H 11/40 - Impedance converters
• H03H 11/44 - Negative impedance converters

Abstract

A tunable grounded positive and negative active inductor simulator and impedance multiplier circuit and a method for implementing the tunable grounded positive and negative active inductor simulator and impedance multiplier circuit are described. The circuit includes one second generation voltage-mode conveyor circuit (VCII+), a voltage source configured to generate an output current, a first impedance, a second impedance and an operational transconductance amplifier OTA. The first impedance is connected between the voltage source and the positive VCII+ input terminal, Y. The second impedance is connected between the second output terminal and a ground terminal. The OTA is configured to have a transconductance gain. The circuit is configured to be tuned by a selection of values for the first and second impedances.

IPC Classes  ?

• H03H 11/48 - One-port networks simulating reactances
• H03H 11/40 - Impedance converters
• H03H 11/44 - Negative impedance converters

Abstract

A ceramic membrane includes an alumina (Al2O3) layer; and a polyamide nanocomposite layer at least partially covering a surface of the alumina layer. The polyamide nanocomposite layer contains polyamide-functionalized silicon carbide (SiC) nanoparticles having an average particle size of 0.1 to 1 micrometer (μm), an amine-functionalized SiC moiety, an acyl aryl moiety, and a piperazine moiety. The amine-functionalized SiC moiety contains a SiC core and an amine functionalized silicon dioxide (SiO2) shell covering the SiC core. The amine-functionalized SiC moiety is covalently bonded to the piperazine moiety via the acyl aryl moiety; and the amine functionalized SiO2 shell contains at least one amino group containing structural unit that is covalently bonded to the SiO2 shell.

IPC Classes  ?

• C08F 292/00 - Macromolecular compounds obtained by polymerising monomers on to inorganic materials
• B01D 17/02 - Separation of non-miscible liquids
• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• B01D 71/02 - Inorganic material
• B01D 71/56 - Polyamides, e.g. polyester-amides
• B01D 71/62 - Polycondensates having nitrogen-containing heterocyclic rings in the main chain
• C02F 1/40 - Devices for separating or removing fatty or oily substances or similar floating material
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Abstract

A bi-directional optical communication system employing a minimum number of single-mode high repetition rate pulsed optical signal sources to achieve cost efficiency while maintaining high data rates. The bi-directional optical communication system includes a first optical data processing unit and a second optical data processing unit. The first optical data processing unit modulates a pulsed optical source using a differential quadrature phase shift keying (DQPSK) modulation and two-level pulse amplitude (PAM-2) modulation and then demodulates it to achieve a pulse amplitude modulated signal. The second optical data processing unit reuses the same optical carrier by passing it through a regenerative wavelength converter to generate three pulsed optical carriers at different wavelengths and employs an On-off keying (OOK) modulation scheme. These carriers are employed to send uplink data at a same rate of as the downlink. As a result, large data is transmitted from one data center to another data center through a downlink and uplink free space optical link network.

IPC Classes  ?

• H04B 10/112 - Line-of-sight transmission over an extended range
• H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
• H04B 10/40 - Transceivers
• H04B 10/508 - Pulse generation, e.g. generation of solitons
• H04B 10/516 - Details of coding or modulation
• H04B 10/524 - Pulse modulation
• H04B 10/54 - Intensity modulation
• H04B 10/556 - Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
• H04B 10/572 - Wavelength control
• H04B 10/61 - Coherent receivers

Abstract

A method for inhibiting corrosion of a metal article in contact with a solution including an acid includes adding to the solution a corrosion inhibitor in an amount of 1 to 500 parts per million (ppm) based on the total number of parts by mass of the solution, thereby adsorbing the corrosion inhibitor onto the surface of the metal article via at least one interaction to form a barrier layer in the form of a composite. The at least one interaction comprises a physisorption, a chemisorption, and a retro donation. The corrosion inhibitor has a formula (I) A method for inhibiting corrosion of a metal article in contact with a solution including an acid includes adding to the solution a corrosion inhibitor in an amount of 1 to 500 parts per million (ppm) based on the total number of parts by mass of the solution, thereby adsorbing the corrosion inhibitor onto the surface of the metal article via at least one interaction to form a barrier layer in the form of a composite. The at least one interaction comprises a physisorption, a chemisorption, and a retro donation. The corrosion inhibitor has a formula (I) where n is any integer from 8 to 21 inclusive and R1, R2, R3, R4, and R5 are each independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted alkoxy.

IPC Classes  ?

• C23F 11/14 - Nitrogen-containing compounds

Abstract

1-xO, wherein x has a value in a range of 0.001 to 0.014. The electron transport material of the present disclosure may be used in a perovskite solar cell.

IPC Classes  ?

• H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides
• C01G 51/00 - Compounds of cobalt
• H10K 30/50 - Photovoltaic [PV] devices
• H10K 85/50 - Organic perovskitesHybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3
• H10K 30/85 - Layers having high electron mobility, e.g. electron-transporting layers or hole-blocking layers
• H10K 71/15 - Deposition of organic active material using liquid deposition, e.g. spin coating characterised by the solvent used

Abstract

A method of increasing a surface-enhanced Raman scattering (SERS) signal of a compound is provided. The method includes dissolving the compound in water to form a solution, adding a substrate at least partially coated with gold nanoparticles to the solution to form a mixture, removing the substrate from the mixture and washing with water to form a SERS sample having at least a portion of molecules of the compound adsorbed to the gold nanoparticles on the substrate, and recording a SERS spectrum of the SERS sample. The gold nanoparticles are in a two-dimensional (2D) monolayer assembly on the substrate and are 10-250 nm in size. The SERS signal of the SERS spectrum is higher than a SERS signal of a SERS spectrum of the compound on the substrate without the gold nanoparticles.

IPC Classes  ?

• G01N 21/65 - Raman scattering
• B05D 5/00 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
• B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials

Abstract

A system, method, and non-transitory computer readable medium that utilizes a distance transformation vector constructed of a probability distribution function (PDF) and a distribution parameter ξ in the estimation process for precise and effective PDF estimation. The system includes a mobile wireless agent, a base station and a computing device interconnected over a wireless communication network. The wireless meter transmits sensory information to the computing device, where the sensory information is processed to estimate characteristics of the wireless communication signal based on the Rayleigh estimator. For the estimation, a distance transformation vector of the PDF and a distribution parameter are constructed. The estimated parameters along with a motion actuation plan are sent to the base station, which uses the estimated parameters in transmitting the motion actuation plan to the mobile wireless agent.

IPC Classes  ?

• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information
• H04W 4/024 - Guidance services
• H04W 4/029 - Location-based management or tracking services

Abstract

A system, method, and non-transitory computer readable medium that utilizes a distance transformation vector constructed of a probability distribution function (PDF) and a distribution parameter ξ in the estimation process for precise and effective PDF estimation. The system includes a mobile wireless agent, a base station and a computing device interconnected over a wireless communication network. The wireless meter transmits sensory information to the computing device, where the sensory information is processed to estimate characteristics of the wireless communication signal based on the Rayleigh estimator. For the estimation, a distance transformation vector of the PDF and a distribution parameter are constructed. The estimated parameters along with a motion actuation plan are sent to the base station, which uses the estimated parameters in transmitting the motion actuation plan to the mobile wireless agent.

IPC Classes  ?

• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information
• H04W 4/024 - Guidance services
• H04W 4/029 - Location-based management or tracking services

Abstract

A method of making a polyimide membrane includes mixing dianhydride and phenylenediamine monomers in a first solvent to form a mixture; heating the mixture thereby polymerizing to form a polyimide polymer in a crude mixture; precipitating and separating the polyimide polymer from the crude mixture; mixing and dissolving the polyimide polymer in a second solvent to form a polyimide solution; applying the polyimide solution onto a surface of a substrate to form a polyimide liquid layer on the substrate; immersing the substrate after the applying in at least one liquid medium selected from the group consisting of water and alcohol, thereby precipitating the polyimide polymer from the polyimide solution to form the polyimide membrane disposed on the surface of the substrate. A desalination system containing the polyimide membrane, and a desalination process.

IPC Classes  ?

• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• B01D 61/36 - PervaporationMembrane distillationLiquid permeation
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 71/64 - PolyimidesPolyamide-imidesPolyester-imidesPolyamide acids or similar polyimide precursors
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Abstract

A method for enhancing or restoring adhesion to cells that have partially or completely loss the ability to adhere to a substrate or other cells using nanosized clay crystallites.

IPC Classes  ?

• A61K 47/69 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
• A61K 9/51 - Nanocapsules
• A61K 33/26 - IronCompounds thereof
• A61K 35/02 - Medicinal preparations containing materials or reaction products thereof with undetermined constitution from inanimate materials
• A61K 35/28 - Bone marrowHaematopoietic stem cellsMesenchymal stem cells of any origin, e.g. adipose-derived stem cells
• A61K 47/02 - Inorganic compounds
• A61P 35/04 - Antineoplastic agents specific for metastasis
• C01B 33/38 - Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type

Abstract

A system, method, and non-transitory computer readable medium that utilizes a distance transformation vector constructed of a probability distribution function (PDF) and a distribution parameter ξ in the estimation process for precise and effective PDF estimation. The system includes a mobile wireless agent, a base station and a computing device interconnected over a wireless communication network. The wireless meter transmits sensory information to the computing device, where the sensory information is processed to estimate characteristics of the wireless communication signal based on the Rayleigh estimator. For the estimation, a distance transformation vector of the PDF and a distribution parameter are constructed. The estimated parameters along with a motion actuation plan are sent to the base station, which uses the estimated parameters in transmitting the motion actuation plan to the mobile wireless agent.

IPC Classes  ?

• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information
• H04W 4/024 - Guidance services
• H04W 4/029 - Location-based management or tracking services

Abstract

2S-containing gas composition by the drilling fluid composition.

IPC Classes  ?

• C09K 8/03 - Specific additives for general use in well-drilling compositions
• E21B 41/02 - Equipment or details not covered by groups in situ inhibition of corrosion in boreholes or wells
• E21B 21/06 - Arrangements for treating drilling fluids outside the borehole

Abstract

A three element slot-based antenna which includes a dielectric circuit board, a metallic layer, a sensing antenna, a first narrow band antenna, a second narrow band antenna, a first tapered transmission line, a second tapered transmission line, a first microstrip transmission line and a second microstrip transmission line. The sensing antenna is a semi-hexagonal slot-line loop whereas each of the first narrow band antenna and the second narrow band antenna are formed as a semi-elliptical slot-line loop having an E-shaped base in the metallic layer. The first tapered transmission line and the second tapered transmission line is connected to first feed port and second feed port, respectively. The first microstrip transmission line and the second microstrip transmission line are connected to third feed port and fourth feed port, respectively. The antenna resonates with circular polarization in an ultra-high frequency sub-GHz responsive to input signal at each feed port.

IPC Classes  ?

• H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
• H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
• H01Q 13/10 - Resonant slot antennas
• H01Q 21/00 - Antenna arrays or systems

Abstract

A method of increasing a surface-enhanced Raman scattering (SERS) signal of a compound is provided. The method includes dissolving the compound in water to form a solution, adding a substrate at least partially coated with gold nanoparticles to the solution to form a mixture, removing the substrate from the mixture and washing with water to form a SERS sample having at least a portion of molecules of the compound adsorbed to the gold nanoparticles on the substrate, and recording a SERS spectrum of the SERS sample. The gold nanoparticles are in a two-dimensional (2D) monolayer assembly on the substrate and are 10-250 nm in size. The SERS signal of the SERS spectrum is higher than a SERS signal of a SERS spectrum of the compound on the substrate without the gold nanoparticles.

IPC Classes  ?

• G01N 21/65 - Raman scattering
• B05D 5/00 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
• B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials

Abstract

A method of increasing a surface-enhanced Raman scattering (SERS) signal of a compound is provided. The method includes dissolving the compound in water to form a solution, adding a substrate at least partially coated with gold nanoparticles to the solution to form a mixture, removing the substrate from the mixture and washing with water to form a SERS sample having at least a portion of molecules of the compound adsorbed to the gold nanoparticles on the substrate, and recording a SERS spectrum of the SERS sample. The gold nanoparticles are in a two-dimensional (2D) monolayer assembly on the substrate and are 10-250 nm in size. The SERS signal of the SERS spectrum is higher than a SERS signal of a SERS spectrum of the compound on the substrate without the gold nanoparticles.

IPC Classes  ?

• G01N 21/65 - Raman scattering
• B05D 5/00 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
• B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials

Abstract

A method of prioritizing updates to third-party libraries for a mobile application includes obtaining a list of a plurality of third-party libraries used in the mobile application. The method further includes, for each third-party library of the plurality of third-party libraries, computing a set of third-party library metrics of a third-party library and computing a weight for each third-party library metric type of the set of third-party library metrics. The method further includes computing, for each third-party library of the plurality of third-party libraries, a ranking value of the third-party library using the set of third-party library metrics and the weights, and selecting, based on the ranking value of the plurality of third-party libraries, one or more third-party libraries to be updated.

IPC Classes  ?

• G06F 8/658 - Incremental updatesDifferential updates
• G06F 8/77 - Software metrics

Abstract

A circuit and methods including super-twisting sliding mode controller (ST-SMC) control of an AC/DC quasi single-stage current-fed resonant converter for electric vehicle (EV) charging. The converter includes primary side switches and a secondary side bidirectional switch, achieving zero-voltage switching (ZVS) for efficient operation. The primary side includes an active clamp circuit, while the secondary side incorporates a resonant tank for smooth energy transfer. The ST-SMC generates pulse width modulation signals, ensuring ZVS at turn ON and turn OFF for primary switches, and ZVS at turn ON with low-voltage switching at turn OFF for the bidirectional switch. The circuit includes a feedback loop with an error calculation unit for precise control of grid current and output voltage, providing power factor correction and regulated output for 400V and 800V EV batteries.

IPC Classes  ?

• B60L 53/22 - Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• B60L 53/63 - Monitoring or controlling charging stations in response to network capacity