Abrégé

The invention relates to a tantalum nanocomposite and a preparation method and application thereof, lymph tracer and radiosensitizer. The tantalum nanocomposite provided in the invention includes tantalum nanoparticle and bio-surfactant acting on the tantalum nanoparticle. The tantalum nanocomposite provided in the invention has good biosafety and can improve the effect of radiation therapy as a radiosensitizer.

Classes IPC  ?

• A61K 9/51 - Nanocapsules
• A61K 49/00 - Préparations pour examen in vivo
• A61K 41/00 - Préparations médicinales obtenues par traitement de substances par énergie ondulatoire ou par rayonnement corpusculaire
• A61K 9/50 - Microcapsules

Abrégé

A mango wiggler, comprising at least four rows of magnet arrays (6), the at least four rows of magnet arrays (6) being arranged around an electron beam current (2), the magnet arrays (6) being arranged in a first direction, and the mango wiggler generating a magnetic field distributed in a second direction and alternating with the first direction and a magnetic field distributed in a third direction and alternating with the first direction, wherein the first direction is the movement direction of the electron beam current; the first direction, the second direction, and the third direction are mutually orthogonal two by two, and meet a right-hand coordinate system; the magnetic field distributed in the second direction deflects the electron beam current in a plane formed by the first direction and the third direction, and the magnetic field distributed in the third direction deflects the electron beam current in a plane formed by the first direction and the second direction; and the period length of the magnetic field distributed in the second direction is different from that of the magnetic field distributed in the third direction. The mango wiggler can form a relatively large synchrotron radiation optical imaging field of view, and can increase the luminous flux.

Classes IPC  ?

• H05H 7/04 - Systèmes à aimantsLeur excitation
• H05H 13/00 - Accélérateurs à résonance magnétiqueCyclotrons

Abrégé

The invention discloses an X-ray zoom lens system (Transfocator) and a focus variation method. The system includes a main frame, many switched arms arranged on one side of the main frame, and a driving component set at the top of the main frame, and a positioning groove set at the bottom of the main frame; For them, each switched arm is composed of successively connected a push rod, a push-push ratchet mechanism, a preload spring and a guide stick, two-dimensional flexible axis, and a CRLs holder from top to bottom; CRLs are stacked and arranged in the mentioned above CRLs holder.

Classes IPC  ?

• G21K 1/06 - Dispositions pour manipuler des particules ou des rayonnements ionisants, p. ex. pour focaliser ou pour modérer utilisant la diffraction, la réfraction ou la réflexion, p. ex. monochromateurs

Abrégé

The present invention relates to a tantalum nano-complex, and a preparation method therefor and the use thereof, a radiotherapy sensitizer and a lymphatic tracer. The tantalum nano-complex provided in the present invention comprises a tantalum nanoparticle and a biological surfactant acting on the tantalum nanoparticle, has a good biological safety, and can improve the radiotherapy effect as a radiotherapy sensitizer.

Classes IPC  ?

• A61K 33/24 - Métaux lourdsLeurs composés
• A61K 9/51 - Nanocapsules
• A61K 47/26 - Hydrates de carbone, p. ex. polyols ou sucres alcoolisés, sucres aminés, acides nucléiques, mono-, di- ou oligosaccharidesLeurs dérivés, p. ex. polysorbates, esters d’acide gras de sorbitan ou glycyrrhizine
• A61K 47/32 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone, p. ex. carbomères
• A61K 47/34 - Composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone, p. ex. polyesters, acides polyaminés, polysiloxanes, polyphosphazines, copolymères de polyalkylène glycol ou de poloxamères
• A61K 47/36 - PolysaccharidesLeurs dérivés, p. ex. gommes, amidon, alginate, dextrine, acide hyaluronique, chitosane, inuline, agar-agar ou pectine
• A61K 49/00 - Préparations pour examen in vivo
• A61P 35/00 - Agents anticancéreux
• B82Y 5/00 - Nanobiotechnologie ou nanomédecine, p. ex. génie protéique ou administration de médicaments
• B82Y 40/00 - Fabrication ou traitement des nanostructures

Abrégé

An X-ray zoom lens system and a zooming method thereof. The system comprises a base; the base has one side provided with multiple adjustment arms, the top provided with a driving assembly, and the bottom provided with a positioning groove; each of the adjustment arms comprises a push rod, a push-push ratchet mechanism, a preload spring, a guide rod, a two-dimensional flexible shaft, and a lens frame which are sequentially connected from top to bottom; CRLs are provided in the lens frame; the push-push ratchet mechanism comprises a tension spring, a sliding block having a ratchet groove, a guide bottom plate, and a C-shaped pull rod; the sliding block having the ratchet groove is fitted to the guide bottom plate by means of a linear sliding groove and a guide structure to form a linear guide kinematic pair; the upper end of the sliding block having the ratchet groove is connected to the upper end of the guide bottom plate by means of the tension spring; the lower end of the sliding block having the ratchet groove is connected to the lens frame by means of the preload spring, the guide rod, and the two-dimensional flexible shaft in sequence; the C-shaped pull rod has the upper end used for sliding in the ratchet groove of the sliding block having the ratchet groove, and the lower end connected to the bottom end of the guide bottom plate by means of elastic clamping.

Classes IPC  ?

• G21K 1/06 - Dispositions pour manipuler des particules ou des rayonnements ionisants, p. ex. pour focaliser ou pour modérer utilisant la diffraction, la réfraction ou la réflexion, p. ex. monochromateurs

Abrégé

A multilayer packaged superconducting transposed cable and a cabling method. A multilayer packaged superconducting transposed cable, characterized in comprising multiple superconducting cable wires, the superconducting cable wires being braided and transposed and shaped according to a set mode, wherein each superconducting cable wire is formed by stacking and packaging multiple layers of superconducting strips (2). According to the cable and the cabling method, for different types of superconducting strips, stacking, packaging, and reinforcement can be performed, and lateral bending, transposition, and shaping can be performed according to a critical angle of the lateral bending. By using the multilayer packaged, braided, and transposed structure, it is possible to reduce an alternating current loss of a cable after being made into an electrical device such as a superconducting magnet, increase an operating current, reduce the inductance, and enhance the strength of the superconducting wire, etc.. When quench occurs in the superconducting strip, the packaged structure can also have the functions of shunting, absorbing excess heat, and protecting the superconducting cable. The cable and the cabling method do not need to cut the superconducting strip braided transposed wires, and have an extremely high engineering current density, thereby greatly saving costs.

Classes IPC  ?

• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes
• H01B 12/08 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à fils toronnés ou tressés
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

A vertical cryogenic liquid centrifugal pump, comprising a rotating shaft (2), a motor assembly (1) located in a room temperature environment, a low-temperature heat-insulating protection structure (3) located in a low temperature environment, and an impeller assembly (4). The motor assembly (1) comprises support bearings (11), a dynamic seal structure (13), and a vacuum flange (14), the room temperature environment and the low temperature environment are separated by means of the vacuum flange (14), and the dynamic seal structure (13) is arranged at the vacuum flange (14); the support bearings (11) match one end of the rotating shaft (2); the other end of the rotating shaft (2) penetrates through the dynamic seal structure (13) and the vacuum flange (14) to extend to the low temperature environment so as to be connected to the impeller assembly (4); the low-temperature heat-insulating protection structure (3) is arranged on the periphery of the rotating shaft (2) between the impeller assembly (4) and the vacuum flange (14). The centrifugal pump can achieve the effects of low heat leakage, high efficiency, and high reliability.

Classes IPC  ?

• F04D 7/02 - Pompes adaptées à la manipulation de liquides particuliers, p. ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge
• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 29/58 - RefroidissementChauffageRéduction du transfert de chaleur
• F04D 29/043 - Arbres
• F04D 29/12 - Joints d'étanchéité pour arbre utilisant des bagues
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• H02K 5/16 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques

Abrégé

The invention provides a method for preparing a technetium-99m tricarbonyl intermediate. The method comprises reacting a manganese carbonyl compound used as a carbon monoxide source with pertechnetate and water to obtain the technetium-99m tricarbonyl intermediate. The method for preparing a technetium-99m tricarbonyl intermediate in an embodiment of the invention can complete the preparation of the intermediate at atmospheric pressure and room temperature. The method is easy to operate, uses easily obtained raw materials, has a high labeling yield, and can be used to prepare various types of technetium tricarbonyl labeled probes.

Classes IPC  ?

• A61K 51/00 - Préparations contenant des substances radioactives utilisées pour la thérapie ou pour l'examen in vivo
• A61M 36/14 - Pansements radioactifs
• C07F 17/00 - Metallocènes

Abrégé

The invention provides a method for preparing a tricarbonyl technetium-99m intermediate. The method comprises reacting a carbonyl manganese compound used as a carbon monoxide donor with pertechnetate and water to obtain the tricarbonyl technetium-99m intermediate. The method for preparing a tricarbonyl technetium-99m intermediate in an embodiment of the invention can complete the preparation of the intermediate at atmospheric pressure and room temperature. The method is easy to operate, uses easily obtained raw materials, has a high labeling rate, and can be used to prepare various types of tricarbonyl technetium labeled probes.

Classes IPC  ?

• C01G 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
• C07F 13/00 - Composés contenant des éléments des groupes 7 ou 17 du tableau périodique

Abrégé

Provided is a surface enhanced Raman scattering technique based detection chip, comprising: a nano metal substrate, two or more signal molecules, and two or more detection objects for detecting tumour markers, wherein the signal molecules are uniformly distributed on the substrate, and the detection objects are respectively fixed onto different signal molecules. Also provided are a preparation method for a detection chip, and a kit containing same, and a tumour detection method. By fixing different Raman signal molecules to different micro zones, synchronous and quantitative detection of a plurality of tumour markers are realized by using a nano-stress sensing technique, having a tremendous application potential.

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman

Abrégé

Disclosed is a photomultiplier of electrostatic focusing micro-channel plates. The photomultiplier comprises a photocathode, an electron multiplier, an anode, a focusing electrode, a power supply electrode and a support post supporting the focusing electrode, the electron multiplier and the anode; the focusing electrode, the electron multiplier and the anode are arranged in a glass vacuum container, and a signal lead of the anode and the power supply electrode penetrate through the glass vacuum container to be connected with an external circuit. The photomultiplier is characterized in that the focusing electrode, the electron multiplier and the anode are centrally coaxial; the electron multiplier consists of two pairs of micro-channel plates arranged in parallel and having a certain gap therebetween. Compared with the prior art, high gains and good single photoelectron spectra are realized by independently regulating the voltages of micro-channel plate assemblies at all levels.

Classes IPC  ?

• H01J 43/06 - Dispositions d'électrodes

Abrégé

A method for constructing a superconducting magnet for magnetic resonance imaging, including: determining a superconducting wire material, a running current and a feasible current-carrying zone; dividing the feasible current-carrying zone into a plurality of rectangular grids, rounding off rectangular grids at the boundary, adjusting the boundary of the feasible current-carrying zone, and acquiring the number of the rectangular grids in the feasible current-carrying zone; with the centre of a magnet as an origin, establishing a coordinate system to obtain the space coordinate of the centre of each rectangular grid; with the minimal wire consumption as an optimization goal, and the field intensity of the centre, the magnetic field uniformity and the stray field as constraint conditions, programming the feasible current-carrying zone with a linear integer programming algorithm to obtain each concentrated distribution area of an initial wire of the magnet; according to the degree of influence of each concentrated distribution area on the magnetic field uniformity, and according to the degree of influence on the magnetic field uniformity in descending order, with the minimal wire consumption as the optimization goal, and the field intensity of the centre, the magnetic field uniformity and the stray field as the constraint conditions, rectangularizing each concentrated distribution area with the linear integer programming algorithm; and acquiring the parameters of a superconducting magnet coil.

Classes IPC  ?

• H01F 6/00 - Aimants supraconducteursBobines supraconductrices
• H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateursAppareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
• G01R 33/3815 - Systèmes pour produire, homogénéiser ou stabiliser le champ magnétique directeur ou le champ magnétique à gradient utilisant des électro-aimants avec des bobines supraconductrices, p. ex. leurs alimentations

Abrégé

A double-cylinder superconducting magnetic separation device used for kaolin comprises a superconducting magnet system, a separation system and a feeding system. The superconducting magnet system comprises a superconducting magnet; liquid helium used for cooling the superconducting magnet; and an iron shield which covers the exterior of the superconducting magnet, a separation cavity being arranged in the iron shield in an axial direction thereof. The separation system comprises a bracket; two magnetic separation rollers which are both arranged on the bracket, are respectively located at either side of the separation cavity, and can alternately enter the separation cavity, a magnetic medium being arranged in each magnetic separation roller; a drive device which drives the magnetic separation rollers to move back and forth; and closed-loop magnetic circuit communicating devices each of which is arranged at one end of each magnetic separation roller which is close to the separation cavity. The feeding system comprises a feeding tank which is used for introducing to the magnetic separation rollers slurry required to be separated; and a water injection tank which is used for introducing to the magnetic separation rollers water used for cleaning same. The double-cylinder superconducting magnetic separation device achieves continuous production, and thus increases the production efficiency.

Classes IPC  ?

• B03C 1/027 - Séparateurs magnétiques à gradient de champ élevé avec des récipients animés d'un mouvement de va-et-vient

Abrégé

A photomultiplier tube including a photocathode, an electron multiplier, an electron collector, and a power lead, wherein the photocathode and the electron multiplier are disposed in a sealed transparent vacuum envelope, the electron collector and the power lead are connected with an external circuit outside the vacuum envelope, the photocathode is formed on the entire inner surface of the vacuum envelope, and the electron multiplier is located on the internal center of the vacuum envelope to receive photoelectrons from the photocathode in all directions for electrons multiplication. Because the effective photocathode area is increased, the detection efficiency of unit light-receiving area is improved.

Classes IPC  ?

• H01J 43/04 - Multiplicateurs d'électrons

Abrégé

A photomultiplier tube comprises a photocathode (14), an electron multiplier (10), an electron collector (11) and a power lead (12), wherein the photocathode (14) and the electron multiplier (10) are disposed in a sealed transparent vacuum envelope (8), the electron collector (11) and the power lead (12) are connected with an external circuit outside the vacuum envelope (8), the photocathode (14) is formed on the entire inner surface of the vacuum envelope (8), and the electron multiplier (10) is located on the center of the vacuum envelope (8) to receive photoelectrons from the photocathode (14) in all directions for electron multiplication. Because the effective area of the photocathode is increased, the detection efficiency of unit light-receiving area is improved.

Classes IPC  ?

• H01J 43/28 - EnceintesFenêtresÉcransSuppression de décharges ou de courants indésirables

Abrégé

Phase sensitive X-ray imaging methods can provide substantially increased contrast over conventional absorption based imaging, and therefore new and otherwise inaccessible information. The use of gratings as optical elements in hard X-ray phase imaging overcomes some of the problems that have impaired the wider use of phase contrast in X-ray radiography and tomography. So far, to separate the phase information from other contributions detected with a grating interferometer, a phase-stepping approach has been considered, which implies the acquisition of multiple radiographic projections. Here, an innovative, highly sensitive X-ray tomographic phase contrast imaging approach is presented based on grating interferometry, which extracts the phase contrast signal without the need of phase stepping. Compared to the existing phase step approach, the main advantage of this new method dubbed "reverse projection" is the significantly reduced delivered dose, without degradation of the image quality. The new technique sets the pre-requisites for future fast and low dose phase contrast imaging methods, fundamental for imaging biological specimens and in-vivo studies.

Classes IPC  ?

• A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations
• G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux

Abrégé

A metallo-fullerenols of general formula M@C2m(OH)x and a tumor- inhibiting composition comprising the metallo-fullerenols are new, wherein M in general formula M@C2m(OH)x is selected from the rare-earth matal of La or Gd, m=41or 30 and 10≤xឬ50. The metallo-fullerenols of general formula M@C2m(OH)x also is used to prepare the medicine for inhibiting the growth of tumour.

Classes IPC  ?

• A61K 33/24 - Métaux lourdsLeurs composés
• A61P 35/00 - Agents anticancéreux