Method for manufacturing crystal array of gamma-ray detector

The invention provides a method for manufacturing a crystal array of a gamma-ray detector, relating to the technical field of gamma-ray detection imaging. The method comprises the following steps of: firstly, cutting an original crystal material into a one-piece original rectangular crystal block, and carrying out mechanical surface treatment on the original rectangular crystal block; then, bonding a light-guide medium on the lower surface of the original crystal block by using a bonding agent; cutting the original crystal block to form a crystal strip array; carrying out surface polishing treatment on each crystal strip arranged in an array; then plating or filling reflective materials in clearances among all the crystal strips; and finally, plating or wrapping the reflective materials on the upper surface and peripheral surfaces of the crystal strip array. By means of the method provided by the invention, the processing difficulty is reduced, the yield is increased, artificially made ...

Self-adaption dynamic filter

The invention discloses a self-adaption dynamic filter relating to the medical technology field of medicinal use, in particular to the technical field of ultrasonic wave echo. The self-adaption dynamic filter is composed of a group of echo data buffer modules, a group of 256-point FFT converter modules, a group of central frequency numbering generation modules and a group of FIR filter modules, wherein the central frequency number generation module has the function of finding the frequency number corresponding to the corresponding highest frequency in all values bigger than a threshold value in a frequency domain. In a far field, because the dynamic filter designed with the method of the invention can better match with the center frequency of the echo, the dynamic filter can obtain the maximal signal-to-noise ratio after a signal passes through an automatically matched dynamic filter and can improve image resolution ratio and sensitivity.

Method for processing planet carrier of heavy truck

The invention discloses a method for processing a planet carrier of a heavy truck. The method comprises the following steps of: by taking a left end face and an excircle of a workpiece as benchmarks, performing rough turning and finish turning on a right end face, the excircle and an inner hole; by taking the processed end face and the excircle as benchmarks, performing rough turning and finish turning on the left end face, the excircle and the inner hole; by taking the left end face and the inner hole as benchmarks, boring in a machining center, and reversely boring 8 planes to meet drawing requirements; by taking the right end face and the inner hole of the workpiece as benchmarks, boring in the machining center to meet the drawing requirements; by taking the inner hole of the workpiece as a benchmark, arranging a core shaft, and milling a spline to meet the drawing requirements; fixing the workpiece on a special clamp, and tapping; performing high-frequency quenching treatment on the ...

Chinese medicine composition for treating ischemic apoplexy and its preparing method

The Chinese medicine composition is prepared with astragalus root, red sage, leech, rhubarb, aucklandia root, bombyx batryticatus and spatholobus stem, and the preparation process includes decoction and alcohol extraction to obtain the effective components in the medicine materials fully. The present invention also provides the quality control method including component identification and content measurement. The composition of the present invention has functions of benefiting vital energy, promoting blood circulation, dispersing blood stasis and dredging meridian, and thus has obvious ischemic apoplexy treating effect.

Processing method for universal-joint flange yoke of transmission shaft of heavy-duty car

The invention relates to a processing method for a universal-joint flange yoke of a transmission shaft of a heavy-duty car. The method comprises the following steps: drilling a through hole of a tooth D, and roughly turning the inner holes of teeth D and F as well as an inner end surface G by taking the rear end surface C and the outer circle A of the workpiece as reference; roughly turning the outer circles A and B as well as an end surface C by taking the processed inner hole and end surface as reference, and controlling the drilling size by lining on an end surface E; integrally tempering the workpiece; roughly turning the inner holes of the teeth D and F and the inner end surface G to the size of the drawing by taking the processed outer circle and end surface as reference; finely turning the outer circles A and B as well as the end surface C by taking the finely-processed inner hole and end surface as reference, and leaving a milling amount; induction-quenching the outer circle of ...

Blood cell apoptosis inducible system

The invention relates to the technical field of medical treatment and discloses equipment for performing comprehensive physical stimulation on in-vitro blood cells. The equipment comprises a constant-temperature water tank, wherein an ultraviolet radiation device is arranged above the water tank; a quartz glass container is arranged in the water tank; and the two sides on the upper part of the container are connected with an ozone input pipe and an ozone outlet pipe. The equipment is simple in structure, easy in production and convenient in operation respectively. The concept and the method for treating the cardiac failure are groundbreaking. The invention provides a blood cell apoptosis inducible processing system which is researched according to the brand new treatment concept and method and provides a new path to the treatment for chronic inflammation over-activated diseases, such as cardiac failure.

Chinese medicine composition for curing traumatic injury and pains in chest and hypochondrium and its preparing method

The Chinese medicine composition is prepared with prepared rhubarb, angelica, bupleurum root, trichosanthes root, peach kernel, safflower, corydalis tuber and licorice, and the preparation process includes decoction and alcohol extraction to obtain the effective components in the medicine materials fully. The present invention also provides the quality control method including component identification and content measurement. The composition of the present invention has excellent treating effect to traumatic injury and pains in chest and hypochondrium.

Blood cell apoptosis inducing method

The invention discloses a blood cell apoptosis inducing method, and relates to the technical field of medical treatment, in particular to the technical field of apoptosis induction of in-vitro blood cells. The technical scheme of the invention is that fresh blood cells are apoptotic under the induction of temperature, ozone and ultraviolet irradiation. Under the irradiation of ultraviolet with the wavelength of 253.7nm, a container which is filled with fresh blood is placed in a water bath at the temperature of 42.5+/-0.1 DEG C, and the gaseous ozone acts on the blood surface for 20 minutes. After the treatment of the method, the blood cell apoptosis incidence reaches 80 percent, the treatment process is simple and scientific, and the stability is high.

New preparation method of asymmetric synthetic dibenzo dioxy octanone

The invention belongs to the field of pharmaceutical synthesis, and relates to a new asymmetric synthesis preparation method of a dibenzo dioxy octanone compound with a structural formula (I). The compound (I) is a cholesterol transferase inhibitor and can treat cardiovascular system diseases such as a coronary heart disease and the like through selectively increasing high-density lipoprotein cholesterol. Compared with the prior art, the method of the invention adopts the asymmetric synthetic method and a new carbon-carbon coupled technology using triethylborine as an ethyl source, improves the yield of a target product, simplifies the separation and purification difficulty of the product, enables industrialized mass production to be possible and simultaneously lowers the cost, the total yield of the compound I prepared by the method of the invention is 5.46 percent, and the total yield of the product is improved by 3.25 times by being compared with the prior art.

SG fusion protein

The invention relates the technical field of medical biology; currently, the medicines which is often used for hematopoiesis and restoring injured tissues clinically are GM-CSF, G-CSF and GM-CSF that mainly take effect on colony forming unit-granulocyte-monocyte to promote proliferation and differentiation, so as to have action on hemopoietic stem cell, medullary system multipotent progenitor cell as well as erythroid and macronucleus system hematopoiesis. But the effect of promoting hematopoiesis and proliferation of the medicines is provisional, the maintaining time is short, and the effects disappear when the medicines are stopped being taken. The invention provides a fusion protein which is used for preventing and treating hematopoiesis damage caused by radiation treatment and chemo-treatment and has the function of enhancing immunity. The gene of the SG fusion protein of the invention has the nucleotide sequence which is shown as SEQ ID NO: 4 and has the whole length of 850bp. The ...

SECTOR ULTRASONIC IMAGING DEVICE

This ultrasonic sector imaging device used for real-time displaying ultrasonic cross-sectional images of the internal organs and gynecological organs in human body is composed of casing, circuit board, and front and rear panels. Such units as channel card, computer card, A/D conversion card, scanning card, bridge card, video amplifier card, power transformer, fan and CRT are installed on the circuit board. Its advantages are sharp image, holding function of image, precise vertical probe, suitability for clinical practice, full functions and simple operation.

Method for preparing airplane carbon brake disc by chemical vapor deposition

A method for preparing an airplane carbon brake disc through chemical vapor deposition relates to a preparation method of an airplane carbon brake disc. The preparation method comprises the following steps that: airplane carbon brake disc prefabricated bodies are arranged inside a chemical vapor deposition furnace in the form of a charge column; adjacent prefabricated bodies are separated by a graphite backing ring; a graphite cover plate with the middle part provided with a through hole is covered on the top end of the charge column; a graphite backing ring is arranged between the graphite cover plate and the charge column; the utmost lower end of the charge column is also supported inside an externally heated chemical vapor deposition furnace through the graphite backing ring and a graphite lower cover plate; a mid position of an upper cover plate inside the chemical vapor deposition furnace is provided with an air inlet hole; a graphite pipe is in seal connection between the air inlet ...

SG fusion protein

The invention relates the technical field of medical biology; currently, the medicines which is often used for hematopoiesis and restoring injured tissues clinically are GM-CSF, G-CSF and GM-CSF that mainly take effect on colony forming unit-granulocyte-monocyte to promote proliferation and differentiation, so as to have action on hemopoietic stem cell, medullary system multipotent progenitor cell as well as erythroid and macronucleus system hematopoiesis. But the effect of promoting hematopoiesis and proliferation of the medicines is provisional, the maintaining time is short, and the effects disappear when the medicines are stopped being taken. The invention provides a fusion protein which is used for preventing and treating hematopoiesis damage caused by radiation treatment and chemo-treatment and has the function of enhancing immunity. The gene of the SG fusion protein of the invention has the nucleotide sequence which is shown as SEQ ID NO: 4 and has the whole length of 850bp. The ...

Oxidization protection passivation layer paint for aviation brake of carbon/carbon composite material

An oxidation prevention passivation layer coating for an aerobraking piece made of carbon/carbon composite material relates to a surfacing process for a metal product, in particular to the aerobraking piece oxidation prevention processing technical field. The coating is prepared by mixing powder material A, a solvent A and a binder. The powder material A consists of SiC, BC, B2O3, Si and B. The solvent A consists of toluene and normal butyl alcohol. The binder comprises a silicone resin. The coating suspension liquid obtained through the method can not only form a passivation layer on the surface of the aerobraking piece made of carbon/carbon composite material, but also facilitate a subsequent process. A finally formed product can meet design requirements.

Chemical vapor deposition stove for manufacturing carbon brake disc of airplane

The invention discloses a chemical vapor deposition furnace for preparing a carbon brake disc of an airplane relating to a method for preparing the carbon brake disc of the airplane, in particular to the method for preparing the carbon brake disc of the airplane through external-heat chemical vapor deposition (CVD) with directional flow. The furnace comprises an annular insulating layer provided with insulating cover at the upper end, an inner wall of the insulting layer is provided with a heating body having a heating chamber, the lower end of the insulting layer is provided with a lower supporting plate, the heating chamber above the lower supporting plate is provided with a graphite lower cover plate, the graphite upper cover plate is arranged on the graphite lower cover plate, centers of the graphite upper cover plate and the insulating cover have through holes respectively, and a graphite pipe is connected hermetically between the two through holes. With this invention, the airplane ...

Oxidization protection matching treatment layer paint for aviation brake of carbon/carbon composite material

An oxidation prevention matching processing layer coating for an aerobraking piece made of carbon/carbon composite material relates to a surfacing process for a metal product, in particular to the aerobraking piece oxidation prevention processing technical field. The coating is prepared through mixing powder material C, a solvent C and a binder, wherein the powder material C consists of SiC, BC, B2O3, ZrO2, Al, Al2O3, Si, B and CeO2; the solvent C consists of xylene, acetone and normal butyl alcohol; and the binder comprises a silicone resin. The coating suspension liquid obtained through the method can form a good coating and a lay matched with the thermal expansion coefficient difference of a carbon/carbon composite material basal body on the surface of an air interdiction layer formed on the aerobraking piece made of carbon/carbon composite material by a special process, thereby making a finally formed product reach design requirements.

Chinese medicine composition for curing traumatic injury and pains in chest and hypochondrium and its preparing method

Antiviral compound intermediate 1-acyl-pyrazol-3-carboxylic acid and preparation method thereof

The invention relates to an antiviral compound intermediate 1-acyl-pyrazol-3-carboxylic acid and a preparation method thereof, in particular to a chemical synthesis method of compound. The method comprises the steps of: first, leading pyrazol-3-carboxylic acid benzyl ester to have reaction with acylation reagent and nitrogen-containing organic base, and generating 1-acylation derivative; and then, leading the 1-acylation derivative to have dehydrogenation for removing benzyl under the action of hydrogen atmosphere and palladium catalyst, and obtaining the 1-acyl-pyrazol-3-carboxylic acid. The antiviral compound intermediate 1-acyl-pyrazol-3-carboxylic acid can be used as intermediate for producing anti-hepatitis B virus medicines and antiviral pesticides, has the capability of combining with DNA and RNA in a specific way like other nucleoside compounds, has better pseudo modification performance, can block the activity of RNA polymerase, is better in the blockage of virus replication, has ...

Oxidization protection processing method for aviation brake of carbon/carbon composite material

An oxidation prevention processing method for an aerobraking piece made of carbon/carbon composite material relates to a surfacing process for a metal product, in particular to the aerobraking piece oxidation prevention processing technical field. Firstly the innermost layer of the braking piece is passivated, then an air interdiction processing is carried out outside the passivation layer, and the processing of the match between a coating and a basal body is carried out at the outermost layer. The method comprehensively utilizes various excellent properties of various materials by a multilayer coating method, thereby achieving an optimal oxidation resistant effect.

Indoor oxygen regulating equipment

Indoor oxygen regulating equipment relates to indoor air regulating equipment, in particular to indoor oxygen content or partial pressure regulating equipment. The equipment comprises an air compressor, a first air storage tank, a cooler and two adsorption towers, wherein the output end of the air compressor is connected with the input end of the first air storage tank; the output end of the first air storage tank is connected with the input end of the cooler; the output end of the cooler is connected with one end of the two adsorption towers respectively by two air inlet control valves; two exhaust pipes provided with exhaust control valves are arranged at one end, which is connected with the air inlet control valves, of the adsorption towers; the other end of the adsorption towers is provided with exit pipes respectively; the exit pipes are respectively connected with throttle valves and exit control valves; the two exit pipes are respectively connected with a second air storage tank ...

Oxidization protection matching treatment layer paint for aviation brake of carbon/carbon composite material

An oxidation prevention matching processing layer coating for an aerobraking piece made of carbon/carbon composite material relates to a surfacing process for a metal product, in particular to the aerobraking piece oxidation prevention processing technical field. The coating is prepared through mixing powder material C, a solvent C and a binder, wherein the powder material C consists of SiC, BC, B2O3, ZrO2, Al, Al2O3, Si, B and CeO2; the solvent C consists of xylene, acetone and normal butyl alcohol; and the binder comprises a silicone resin. The coating suspension liquid obtained through the method can form a good coating and a lay matched with the thermal expansion coefficient difference of a carbon/carbon composite material basal body on the surface of an air interdiction layer formed on the aerobraking piece made of carbon/carbon composite material by a special process, thereby making a finally formed product reach design requirements.

Antiviral compound intermediate 1-acyl-pyrazol-3-carboxylic acid and preparation method thereof

The invention relates to an antiviral compound intermediate 1-acyl-pyrazol-3-carboxylic acid and a preparation method thereof, in particular to a chemical synthesis method of compound. The method comprises the steps of: first, leading pyrazol-3-carboxylic acid benzyl ester to have reaction with acylation reagent and nitrogen-containing organic base, and generating 1-acylation derivative; and then, leading the 1-acylation derivative to have dehydrogenation for removing benzyl under the action of hydrogen atmosphere and palladium catalyst, and obtaining the 1-acyl-pyrazol-3-carboxylic acid. Theantiviral compound intermediate 1-acyl-pyrazol-3-carboxylic acid can be used as intermediate for producing anti-hepatitis B virus medicines and antiviral pesticides, has the capability of combining with DNA and RNA in a specific way like other nucleoside compounds, has better pseudo modification performance, can block the activity of RNA polymerase, is better in the blockage of virus replication,has ...

Oxidation protection air block layer coating of carbon/carbon composite material aircraft brake member

The invention relates to an oxidation protection air blocking layer coating of a carbon/carbon composite material aerobraking member, particularly to a surface processing technology of a metal product belonging to the field of the oxidation protection processing technology of aerobraking member. The oxidation protection air blocking layer coating is prepared by mixing a powder B, a solution B and phosphate ester, the powder B is composed of SiC, BC, B2O3, ZrO2, Al, Al2O3, Si, B and CeO2; the solution B is composed of silicasol and aluminum dihydrogen phosphate. The coat suspension prepared by the invention can form a good air blocking layer on the passivation layer of the carbon/carbon composite material aerobraking member by means of especial technology, also facilitate the processing of the post technology. Finally the formed product reaches the design requirement.

Auto-switching control method based on EMS for stand-by power source in electric grid

The invention relates to a control method for EMS-based automatic switching of a standby power of a grid, which belongs to the automatization field of electric power system dispatching and comprises that: a control model of the automatic switching of the standby power of the grid is established in a grid energy management system which is used for collecting grid operation states in real time; and the control model of the automatic switching of the standby power of the grid is driven by the data of remote signalling and telemetering so as to create a control strategy; the system automatically checks or modulates the control strategy and the safety of the grid and transmits the control strategy by remote data collecting and remote control of a monitoring system to a remote terminal of a substation to drive a switch which leads to achieve the purpose of automatic switching of the standby power. In the invention, only the model of the automatic switching of the standby power of the grid in ...

Oxidization protection processing method for aviation brake of carbon/carbon composite material

An oxidation prevention processing method for an aerobraking piece made of carbon/carbon composite material relates to a surfacing process for a metal product, in particular to the aerobraking piece oxidation prevention processing technical field. Firstly the innermost layer of the braking piece is passivated through the surface oxidation of the carbon/carbon composite material, then an air interdiction processing is carried out outside the passivation layer, and the processing of the match between a coating and a basal body is carried out at the outermost layer. The method comprehensively utilizes various excellent properties of various materials by a multilayer coating method, thereby achieving an optimal oxidation resistant effect.

Preparation method of antiviral compound intermediate pyrazole-3-carboxylic ester

The invention provides a preparation method of antiviral compound intermediate pyrazole-3-carboxylic ester, relating to the compound organic synthesis technical field. Pyrazole-3-carboxylic ester reacts with acylation agent and alkali to generate 1-carbamic acid ester derivate while esterification is carried out, separation is carried out to obtain N-benzoxycarbonyl-pyrazole-3-carboxylic acid benzyl ester; then selective hydrolysis is carried out on the N-benzoxycarbonyl-pyrazole-3-carboxylic acid benzyl ester to remove N-carbalkoxy, and recrystallization or column chromatographic separation is carried out to obtain the pyrazole-3-carboxylic ester. The invention has short synthesis steps, mild and convenient operation condition and strong economy and practicability, and different compounds with the activity can be synthesized by virtue of the compound of the invention.

Auto-switching control method based on EMS for stand-by power source in electric grid

Method for processing differential case with end face teeth

The invention discloses a method for processing a differential case with end face teeth, which comprises the following steps of: by taking a large-end end face and an excircle of a workpiece as reference, performing rough turning and semi-finish turning on a small-end end face, a bearing retainer excircle, an inner bore C and a bayonet D; by taking the machined small-end end face and bearing retainer excircle as reference, performing rough turning and finish turning on the large-end end face and the excircle, a bayonet A, a spherical surface, an inner bore, a conical surface and an inner end face, an inner bore B and an inner bore C; fixing the workpiece on a special fixture, and drilling a through hole and a threaded hole in a machining center; fixing the workpiece on a special fixture, milling end face teeth on a milling machine, ensuring tooth form parameters and chamfering all tooth forms; performing heat treatment on the bearing retainer excircle and the tooth forms, performing high ...

Self-adaption dynamic filter

The invention discloses a self-adaption dynamic filter relating to the medical technology field of medicinal use, in particular to the technical field of ultrasonic wave echo. The self-adaption dynamic filter is composed of a group of echo data buffer modules, a group of 256-point FFT converter modules, a group of central frequency numbering generation modules and a group of FIR filter modules, wherein the central frequency number generation module has the function of finding the frequency number corresponding to the corresponding highest frequency in all values bigger than a threshold value in a frequency domain. In a far field, because the dynamic filter designed with the method of the invention can better match with the center frequency of the echo, the dynamic filter can obtain the maximal signal-to-noise ratio after a signal passes through an automatically matched dynamic filter and can improve image resolution ratio and sensitivity.

Oxidation protection air block layer coating of carbon/carbon composite material aircraft brake member

The present invention relates to an oxidation protection air blocking layer coating of a carbon/carbon composite material aerobraking member, particularly to a surface processing technology of a metal product belonging to the field of the oxidation protection processing technology of aerobraking member. The oxidation protection air blocking layer coating is prepared by mixing a powder B, a solution B andphosphate ester, the powder B is composed of SiC, BC, B2O3, ZrO2, Al, Al2O3, Si, B and CeO2; the solution B is composed of silicasol and aluminum dihydrogen phosphate. The coat suspension prepared by the present invention can form a good air blocking layer on the passivation layer of the carbon/carbon composite material aerobraking member by means of especial technology, also facilitate the processing of the post technology. Finally the formed product reaches the design requirement.

Anti-viral compound intermediate 1-acyl-pyrazole-3-carboxylic acid and preparation method thereof

The invention relates to anti-viral compound intermediate 1-acyl-pyrazole-3-carboxylic acid and a preparation method thereof, which belong to the field of organic synthesis. Firstly, pyrazole-3-carboxylic acid tert-butyl reacts with acylation reagent and nitrogen-containing organic alkali to generate 1-acylated derivative; and then the tert-butyl group of the 1-acylated derivative is removed under the action of acid to obtain the 1-acyl-pyrazole-3-carboxylic acid. Same as other nucleosides, the product has the capability of specifically binding NDA and RNA, has better decoration, can block the activity of RNA polymerase, plays a very good role in blocking virus replication, simultaneously has good anti-drug resistance and is beneficial to long-termed use.

Machining method for cross-shaped shaft holes of differential mechanism semi-shells

The invention relates to a machining method for the cross-shaped shaft holes of differential mechanism semi-shells, which is characterized in that the differential mechanism semi-shells are arranged in the inner cavity of a fixture by being positioned with the external circle of the lower end and the bottom end surface of the differential mechanism semi-shells and the fixture is fixed on a swiveling operating platform; semicircular holes are machined successively through the modes of chambering, heavy boring and refined boring; the swiveling operating platform is arranged so that the differential mechanism semi-shells automatically rotate at 90 degrees; and the four perpendicular semicircular holes are machined successively according to the sequence. The machining method carries out the machining on the swiveling platform of a vertical machining center so as to carry out arbitrary scale division; the oil pressure type locking is adopted so that the clamping is reliable; the high-precision ...

Method for machining lever assembly of disc brake

The invention relates to a method for machining a lever assembly of a disc brake, which comprises the following steps of: milling two end faces, chambering a hole a on the two end faces, and boring the hole a roughly and finely to ensure that the cylindricity is 0.01 millimeter; machining a spherical surface by using a forming cutter; lathing roughly, namely lathing excircles and steps at both ends of a lathe to ensure that the bounce is less than 0.1 millimeter and the axiality is 0.2 millimeter; drilling, chambering and reaming two holes c, and drilling a hole b; performing nitrocarburizing on a surface, wherein the layer depth is between 0.6 and 1.0 millimeter, and the hardness HRC is between 58 and 62; grinding the excircles at both ends to ensure the roughness of 0.8 and true position; putting a gasket and a rivet into the two holes c respectively for riveting; pressing a driving head into the hole b by using a pressing machine, wherein the axial drawing-out of the driving head is ...