Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 29. Отображено 29.
30-05-2023 дата публикации

Homogenizing heat treatment method of Zr-containing Al-Cu-Li-Mg-Ag alloy

Номер: CN116179975A
Автор: WEN KAI, LI XIWU, XIONG BAIQING, ZHANG YONG'AN, LI ZHIHUI, LI YANAN, YAN HONGWEI, YAN LIZHEN, SHI GUOHUI, GAO GUANJUN, ZHU KAI, LIU HONGWEI
Принадлежит:

The invention discloses a homogenizing heat treatment method for an Al-Cu-Li-Mg-Ag alloy containing Zr, and relates to the technical field of alloy materials. The homogenization heat treatment method comprises the following process steps: (1) first-stage homogenization heat treatment: heating an alloy ingot to 350-390 DEG C from room temperature, and preserving heat for 12-18 hours; (2) second-stage homogenization heat treatment: continuously heating the alloy ingot to 485-500 DEG C, and keeping the temperature for 14-20 hours; (3) third-stage homogenization heat treatment: heating the alloy ingot to 510-530 DEG C, and keeping the temperature for 6-10 hours; and (4) cooling the alloy ingot obtained in the step (3) to room temperature. By adopting the homogenizing heat treatment method disclosed by the invention, low-temperature dispersed fine precipitation of an Al3Zr phase, full redissolution of an Ag-containing phase and a Cu-rich phase and a residual coarse second phase as a Fe-rich ...

Подробнее
Номер записи: 1
06-06-2023 дата публикации

Device and method for testing distribution of residual stress in plate

Номер: CN116222857A
Автор: LI YANAN, LI XIWU, XIONG BAIQING, ZHANG YONG'AN, LI ZHIHUI, ZHU KAI, YAN LIZHEN, YAN HONGWEI, WEN KAI, GAO GUANJUN, SHI GUOHUI, YU MINGYANG, LI YING
Принадлежит:

The invention discloses a device and a method for testing distribution of residual stress in a plate. The testing device comprises a base, a supporting column, a side edge limiting block and a deflection testing dial indicator, wherein the positions of the supporting column and the side edge limiting block are adjustable. The testing method comprises the following steps: milling a sample layer by layer at equal intervals along the thickness direction, testing the accumulated deflection of the residual material after each milling by adopting the testing device, and calculating to obtain the residual stress of the sample under different thicknesses. The invention scientifically designs the device and the method for testing the internal residual stress distribution of the plate based on the deflection change of the sample after layer-by-layer stripping, and the deflection of the stripped plate sample can be accurately and reliably measured by adopting the testing device; by adopting the testing ...

Подробнее
Номер записи: 2
07-07-2023 дата публикации

Installation device of hydraulic level gauge for monitoring settlement of laid pipeline in pipe drawing construction

Номер: CN116399295A
Автор: KOU PENG, GUO LIMING, REN JIANHUI, ZHANG PENGBO, LI YUANFANG, ZHANG YONG'AN, LU YAN, LIU XIAO, FENG MAOCHANG, ZENG KAI, ZHANG MINGXING, LIU FEI, YANG JUNWEI
Принадлежит:

The invention belongs to the technical field of construction, particularly relates to an installation device for a settlement monitoring hydraulic level gauge for laying a pipeline in pipe drawing construction, and provides the following scheme aiming at the problems that when the level gauge is installed in an existing technical scheme, a protective sleeve needs to be installed on the ground in advance, the level gauge needs to be dismantled in the later period, and excavation needs to be carried out. The device comprises a base, the right side of the base is rotationally connected with a blocking shaft, the right side of the top of the base is fixedly provided with a mounting frame, the interior of the mounting frame is connected with a driving assembly, and the driving assembly is connected with a protection guide pipe. The leveling instrument probes can be inserted into the earth surface by starting the driving motor and the excavation motor, the insertion angle of the protection guide ...

Подробнее
Номер записи: 3
22-09-2004 дата публикации

低密度低膨胀系数高热导率硅铝合金封装材料及制备方法

Номер: CN0001531072A
Автор: ZHANG YONGAN, XIONG BAIQING, ZHANG JISHAN, YONGAN ZHANG, BAIQING XIONG, JISHAN ZHANG, 张永安
Принадлежит:

A Si-Al alloy packaging material having low density, low thermal expansion ratio and high thermal conductivity and its manufacturing method. The alloy consists of Si 50-70 wt%, balance of Al. Blending according to the alloy composition, melting the material, casting as the precast ingot. Melting the precast ingot at 1600-1700 deg.C, taking the inert gas as atomization gas, processing fast quick setting jet molding preparation with the atomization pressure of 0.5-1.0Mpa. This new type SiAl alloy has even alloy composition, even microstructure, littleness structure. Through hot isostatic pressing and hot press densification this material can implement full densification, this material can be processed and cut by universal cutter, can be made external coating and soldering. This material can be taken as packaging material of micro electronic circuit and microwave circuit in the field of aviation, spaceflight, electronic, computer and communication.

Подробнее
Номер записи: 4
14-07-2023 дата публикации

Aluminum-zinc-magnesium-copper alloy bar for nut fasteners and preparation method of aluminum-zinc-magnesium-copper alloy bar

Номер: CN116426801A
Автор: GAO GUANJUN, LI XIWU, XIONG BAIQING, ZHANG YONG'AN, LI ZHIHUI, WEN KAI, LI YANAN, YAN LIZHEN, YAN HONGWEI, LIU HONGWEI, SHI GUOHUI, YU MINGYANG
Принадлежит:

The invention provides a preparation method of an aluminum-zinc-magnesium-copper alloy bar for a high-quality nut fastener, which comprises the following steps of: 1, proportioning; 2, casting; step 3, homogenization and quenching treatment; fourthly, hot rough rolling is conducted; 5, hot finish rolling; 6, multi-pass intermediate annealing and cold drawing; 7, solution treatment; and eighthly, overaging treatment is conducted. The method solves the problems that on the premise that aluminum alloy bars for nut type fasteners prepared through an existing process meet the mechanical property indexes, the conductivity of the alloy bars cannot meet the index requirements, and the qualified rate of workpieces is reduced due to the fact that closing-in cracks often occur. The high-quality aluminum-zinc-magnesium-copper alloy bar prepared through the method is uniform and fine in solid solution aging state microscopic structure, and coarse and large second-phase particles are not seen; the tensile ...

Подробнее
Номер записи: 5
07-07-2023 дата публикации

Fog penetration detection device and method based on infrared laser digital holography

Номер: CN116399826A
Автор: ZHANG YONG'AN, WANG GANG, ZENG CHUNHUA, HUANG JUNHAO
Принадлежит:

The invention discloses a fog penetration detection device and method based on infrared laser digital holography, and belongs to the technical field of infrared holography. The fog penetration detection device comprises an infrared pulse laser, a beam splitter I, a beam expander I, a pinhole filter I, a lens I, an infrared lens I, an infrared optical fiber optical path compensation device, an optical path compensation knob, a total reflective mirror, a beam expander II, a pinhole filter II, a lens II, a beam splitter II, an infrared lens II, an infrared CCD, a computer, an outer layer protection device and a to-be-detected target. And the optical path compensation knob is connected with the infrared optical fiber optical path compensation device through a connecting rod. The device has an optical path compensation effect, can cover a circular area with the radius to the maximum optical path compensation distance, shows a three-dimensional effect with large information amount by combining ...

Подробнее
Номер записи: 6
06-06-2023 дата публикации

Test hole digging device based on sand filling method

Номер: CN116220670A
Автор: ZHANG YONG'AN, MA YANMIN, WANG PING
Принадлежит:

The invention relates to the field of compaction degree detection equipment, in particular to a test hole digging device based on a sand filling method, which comprises a bearing plate, a bracket rotationally connected to the bearing plate, a multi-stage cylinder arranged on the bearing plate, a lifting plate arranged at the end part of the multi-stage cylinder, and a driving motor arranged on the lifting plate, a driving gear is arranged at the end of the driving motor, a gear ring is arranged on the support, the driving gear is meshed with the gear ring, a first through hole is formed in the bearing plate, a drilling barrel is arranged in the first through hole in a penetrating mode, a first rotating shaft is arranged between the drilling barrel and the support, a return assembly is arranged between the first rotating shaft and the support, and a first driven gear and a first connecting plate are arranged on the first rotating shaft. A connecting assembly is arranged between the first ...

Подробнее
Номер записи: 7
02-06-2023 дата публикации

Land ridge dividing device and land operation machine

Номер: CN116195386A
Автор: ZHANG YONG'AN, ZHANG MINGQIAN, LIN TIANRAN, LIU LIBO, QI LINGFENG, WANG CHAOCHAO, ZHAO XIANBO, CHEN YIQIANG, CUI ZHENWEI, ZHAN RENFENG, HU XINGCHUAN, ZHOU DONGXIN
Принадлежит:

The invention discloses a land ridge dividing device and a land operation machine. The land ridge dividing device comprises a mounting frame; the rotary scattering mechanism is mounted on the mounting frame and comprises a plurality of rotatable scattering parts, and the scattering parts are used for rotating to scatter soil during working; the collecting and conveying mechanism is mounted on the mounting frame and is used for receiving and conveying the soil scattered by the rotary scattering mechanism during working; the extrusion ridging mechanism is mounted on the mounting frame and used for receiving the soil conveyed by the collecting and conveying mechanism, extruding and shaping the soil and then outputting the soil to form ridges; and the power device is in driving connection with the rotary scattering mechanism, the collecting and conveying mechanism and the extrusion ridging mechanism.

Подробнее
Номер записи: 8
23-10-2014 дата публикации

ALUMINUM ALLOY MATERIAL SUITABLE FOR MANUFACTURING OF AUTOMOBILE SHEET, AND PREPARATION METHOD THEREFOR

Номер: WO2014169585A1
Автор: XIONG, Baiqing, LI, Xiwu, ZHANG, Yongan, LI, Zhihui, LIU, Hongwei, WANG, Feng
Принадлежит:

An aluminum alloy material suitable for manufacturing of an automobile sheet, comprising Si of 0.6-1.2wt%，Mg of 0.7-1.3wt%，Zn of 0.25-0.8wt%，Cu of 0.02-0.20wt%，Mn of 0.01-0.25wt%，and Zr of 0.01-0.20wt%, and the rest is Al and accompanying elements. The aluminum alloy material satisfies the inequation 2.30wt%≤（Si+Mg+Zn+2Cu）wt%≤3.20wt%. Also provided are a method for preparing the aluminum alloy material and a final component containing the aluminum alloy material.

Подробнее
Номер записи: 9
16-05-2023 дата публикации

Application of suramine in prevention and treatment of SVCV (spring viraemia of carp) infection

Номер: CN116115595A
Автор: ZHANG YONG'AN, OUYANG SONGYING, WANG CHAOXI
Принадлежит:

The invention belongs to the technical field of aquaculture, and discloses application of suramine or pharmaceutically acceptable salt thereof or suramine solvate in preparation of a medicine for preventing and treating fish spring viraemia virus (SVCV) infection. The suramin sodium can obviously reduce the virus titer of spring viraemia of carp virus and the gene expression quantities of N protein, P protein, M protein, G protein and L protein of the virus, when the dosage of the suramin sodium is 0.1 mg/g body weight, the suramin sodium has the best treatment effect on zebrafish infected by SVCV, and the N protein is one of the targets of suramin for playing the antiviral effect.

Подробнее
Номер записи: 10
04-08-2011 дата публикации

ALUMINUM ALLOY PRODUCT ADAPTED TO PRODUCE STRUCTURE PIECE AND PRODUCING METHOD THEREOF

Номер: WO2011091645A1
Автор: XIONG, Baiqing, ZHANG, Yongan, ZHU, Baohong, LI, Xiwu, LI, Zhihui, WANG, Feng, LIU, Hongwei
Принадлежит:

An aluminum (Al) alloy product adapted to produce structure piece is made from an ingot manufactured by semi-continuous casting. The composition of the product comprises (by wt%): Zn 7.5-8.7, Mg 1.1-2.3, Cu 0.5-1.9, Zr 0.03-0.20, the balance Al, accompanying elements and impurities, wherein the composition satisfies (a) 10.5 ≤ Zn+Mg+Cu ≤ 11.0；(b) 5.3 ≤ (Zn/Mg)+Cu ≤ 6.0；(c) (0.24-D/4800) ≤ Zr ≤ (0.24-D/5000), in which D is the smallest length of the line segment connecting any two spots on the circumference of the cross-section of the ingot and passing through the geometric center of the cross-section, and 250mm ≤ D ≤ 1000mm. The Al alloy product has good strength and damage tolerance, and has good property uniformity at surface, all depths under surface and the core thereof. A method for producing the Al alloy product is also provided.

Подробнее
Номер записи: 11
25-03-2010 дата публикации

AN AL ALLOY MATERIAL SUITABLE FOR MANUFACTURING MAIN SUPPORTING STRUCTURAL COMPONENTS WITH LARGE SECTION

Номер: WO2010031255A1
Автор: XIONG, Baiqing, ZHANG, Yong'an, LI, Zhihui, ZHU, Baohong, WANG, Feng, LIU, Hongwei, LI, Xiwu
Принадлежит:

An Al alloy and the manufacturing method thereof are illustrated. The alloy comprises (in wt%): Zn 7.4-8.4%, Mg 1.4-2.2%, Cu 1.1 -1.7%, Zr 0.15-0.3%, Fe <0.10%, Si<0.08%, and balance Al. The Al alloy has high strength, good toughness and corrosion resistance, and also has excellent hardenability. The alloy is suitable for manufacturing products with large section, and could be used in large-scale main supporting structural components in the fields of aerospace, communication and transportation etc.

Подробнее
Номер записи: 12
12-05-2023 дата публикации

Method for realizing data fitting based on least square method of Qt

Номер: CN116107553A
Автор: ZHANG MING, DUAN HAILONG, CHEN YONGPENG, ZHANG YONG'AN, ZHOU XIAOLIN, WANG XIAOBO, WANG WENYAN, CHEN YU, XU XIANGQIAN
Принадлежит:

The invention relates to the technical field of data processing of photoelectric system testers, and discloses a Qt-based method for realizing data fitting by a least square method, which comprises the following steps of: S1, writing a. M function file for realizing fitting by the least square method in Matlab software; s2, generating. Dll,. H,. Ctf files according to the. M function file; and S3, calling. Dll,. H,. Ctf files and a C + + link library in the Qt. According to the method, all functions required for establishing an art-level graphical interface are provided for application developers; the method is completely object-oriented, is very easy to expand, allows real component programming, simplifies a memory recovery mechanism to a certain extent, is high in development efficiency, and can quickly construct an application program.

Подробнее
Номер записи: 13
12-05-2023 дата публикации

RPA composition and kit for detecting nocardia seriolae and detection method of nocardia seriolae

Номер: CN116103416A
Автор: ZHANG XUJIE, ZHANG YONG'AN, LIU XUN, TAN SHUFANG
Принадлежит:

The invention discloses an RPA composition and a kit for detecting nocardia seriolae and a detection method of nocardia seriolae, and belongs to the technical field of biology. The RPA composition for detecting nocardia seriolae comprises an RPA primer and a probe. The invention further provides a kit for detecting nocardia seriolae, and the RPA-LFD kit comprises the RPA composition. The invention also provides a detection method of nocardia seriolae. The detection method comprises the following steps: S1, extracting DNA of a sample to be detected; s2, taking the DNA extracted in the step S1 as an amplification template, and carrying out RPA amplification reaction by adopting the RPA composition to obtain a product; and S3, analyzing a product obtained in the step S2. The RPA composition for detecting nocardia seriolae, provided by the invention, can realize RPA detection of nocardia seriolae, and can be used for rapidly, simply, conveniently and specifically detecting nocardia seriolae ...

Подробнее
Номер записи: 14
21-04-2023 дата публикации

Implementation method for software function of button device

Номер: CN115994008A
Автор: ZHANG YONG'AN, XIE CHENGYONG, GENG JIA, LI HUI, ZHANG HAN, XING TINGYU
Принадлежит:

The invention provides a method for realizing a software function of a button device, which comprises the following steps of: according to an original input signal processing type, establishing a mapping relationship between an input signal and an output signal, so that when an external input signal exists, the original input signal processing type gives a corresponding output signal; the digital signal reading interface type is used for shielding hardware interface differences; the button type comprises at least one signal processing type instance, assigning the change when the button is operated as a function for processing a business logic process, and callback the callback function in the signal processing type instance through the timer so as to use the button. A unified processing process is provided for button action detection, the processing process can be used by a button unit and a calculation processing unit with different digital inputs, the processing process can be used repeatedly ...

Подробнее
Номер записи: 15
15-08-2023 дата публикации

Vascular intervention operation auxiliary system and control method thereof

Номер: CN116597975A
Автор: ZHANG YONG'AN, LI HUI, GENG JIA, KIM HA-SANG, ZHANG HAN, XING TINGYU
Принадлежит:

The invention provides a vascular interventional operation auxiliary system and a control method thereof, relates to the field of medical equipment, and is used for providing assistance for vascular interventional operation equipment, the system comprises a man-machine interaction subsystem and a motion control subsystem, and the man-machine interaction subsystem and the motion control subsystem are in communication connection; the man-machine interaction subsystem is used for receiving and processing a first instruction input by a user and sending a second instruction to the motion control subsystem, and is also used for acquiring state information of the vascular intervention operation equipment fed back by the motion control subsystem; the motion control subsystem is used for receiving and processing the second instruction sent by the man-machine interaction subsystem, and is also used for carrying out motion control on the vascular interventional operation equipment; the man-machine ...

Подробнее
Номер записи: 16
21-07-2023 дата публикации

Ink transportation barrel capable of reducing shaking

Номер: CN116461867A
Автор: WANG RUIHONG, LI LEI, ZHANG YONG'AN
Принадлежит:

An ink transportation barrel capable of reducing shaking relates to the technical field of ink transportation, when the ink transportation barrel is placed on a transportation vehicle to move, vibration generated by the transportation vehicle is transmitted to an outer barrel, the outer barrel moves along an inner barrel to extrude a three-axis holder support, the three-axis holder support is folded or unfolded, and then the stability of the inner barrel is improved; after a lower pressing block is placed in the ink conveying barrel, the lower pressing block pulls an elastic connecting rope through the gravity of the lower pressing block, so that the lower pressing block moves downwards, and a floating block floats on the upper surface of the ink; the inner barrel is stably moved, so that ink shaking is reduced, ink in the ink conveying barrel can be pressed downwards, the ink is prevented from making contact with air in the ink conveying barrel, ink combustion is avoided, the ink flowing ...

Подробнее
Номер записи: 17
28-07-2023 дата публикации

Homogenizing heat treatment method for Zr-containing aluminum-lithium alloy

Номер: CN116497296A
Автор: WEN KAI, LI XIWU, XIONG BAIQING, ZHANG YONG'AN, LI ZHIHUI, LI YANAN, YAN LIZHEN, YAN HONGWEI, LIU HONGWEI, SHI GUOHUI, GAO GUANJUN, ZHU KAI
Принадлежит:

The invention relates to an efficient homogenizing heat treatment method for Zr-containing aluminum-lithium alloy, and belongs to the technical field of aluminum-lithium alloy heat treatment. The method comprises the following steps: (1) first-stage homogenization treatment: carrying out a homogenization heating process with a gradually reduced heating rate on an alloy to realize nucleation of a dispersed phase; and heat preservation is carried out at a relatively high temperature and a relatively narrow temperature window, so that redissolution of an Ag-containing phase is realized while uniform growth of a dispersed phase is ensured. And (2) second-stage homogenization treatment is conducted, specifically, rapid heating is conducted, then heat preservation is conducted, and rapid redissolution of a Cu-rich phase is achieved in a high temperature window. By adopting the homogenizing treatment method disclosed by the invention, uniform precipitation of a dispersed phase and good redissolution ...

Подробнее
Номер записи: 18
25-08-2023 дата публикации

Rapid hole sealing method for upward deep hole blasting

Номер: CN116642389A
Автор: LI CHUANTIAN, ZHANG YONG'AN
Принадлежит:

The invention relates to a rapid hole sealing method for upward deep hole blasting, and belongs to the technical field of mine drilling and hole sealing. The method comprises the following steps: firstly, constructing a drill hole in a roof coal rock mass, then filling explosive, a detonator, a one-way spring fixer, a bag hole packer and a slurry return pipe into the drill hole, then injecting high-pressure non-combustible fly ash mixed slurry into the bag hole packer and the drill hole through a pneumatic grouting pump, standing for 15 minutes, and finally detonating the explosive in the drill hole. According to the method, the high-pressure non-combustible fly ash mixed slurry can be fed into the bag hole packer in one step, the characteristic that the high-pressure non-combustible fly ash mixed slurry rapidly settles to form a plastic settling body is effectively utilized, hole sealing and grouting are directly and rapidly conducted through the pneumatic grouting pump with the stirrer ...

Подробнее
Номер записи: 19
04-08-2023 дата публикации

Ink sealing and filling device capable of preventing oxidation

Номер: CN116534363A
Автор: WANG RUIHONG, LI LEI, ZHANG YONG'AN
Принадлежит:

A printing ink sealing and filling device capable of preventing oxidation relates to the field of printing ink sealing and filling and comprises a bottom plate, a printing ink bottle is mounted on the bottom plate, a sealing and vacuumizing mechanism is arranged above the printing ink bottle, a lifting mechanism is arranged above the sealing and vacuumizing mechanism, and an outward turning mechanism is mounted between the lifting mechanism and the sealing and vacuumizing mechanism. The bottom of the hose is tightly attached to the bottom of the ink bottle for ink filling, so that the ink outlet in the lower end of the hose is submerged by the ink input into the ink bottle, and the situation that ink in the ink bottle is disturbed, the ink contaminates the inner wall of the ink bottle, ink filling cannot be accurately metered, and contamination is caused is prevented. The negative pressure in the ink bottle is controlled, so that the input speed of the ink is gradually reduced, disturbance ...

Подробнее
Номер записи: 20
08-08-2023 дата публикации

Scanning holographic device for obtaining horizontal parallax-only hologram

Номер: CN116560202A
Автор: CAO WENHAO, ZHANG YONG'AN
Принадлежит:

The invention discloses a scanning holographic device for obtaining a hologram with only horizontal parallax. The scanning holographic device comprises a focusing lens, a light source, a pupil, a plane reflector, an acoustic optical modulator (AOM), a two-dimensional scanning galvanometer, a cylindrical mirror and a horizontal slit, according to the invention, vertical axis data is compensated by using a cylindrical mirror, then a two-dimensional Fresnel zone plate is processed by using a limiting effect of a horizontal slit, a two-dimensional Fresnel wave representation is converted into a one-dimensional Fresnel zone plate with reduced vertical axis curvature, then the one-dimensional Fresnel zone plate is used for scanning an object, and a photoelectric sensor records light waves, so that the object can be detected. Synthesizing the recorded data by using a computer to obtain a horizontal parallax-only hologram of the object; the method has the advantages that the cost is low, the light ...

Подробнее
Номер записи: 21
07-07-2004 дата публикации

一种高性能CuCr25合金触头材料及其快速凝固制备方法

Номер: CN0001510152A
Автор: ZHANG YONGAN, XIONG BOQING, SHI LIKAI, YONGAN ZHANG, BOQING XIONG, LIKAI SHI, 张永安
Принадлежит:

A high-performance CuCr25 alloy material used for the contact of high-power vacuum breaker contains Cu (72-77 wt.%) and Cr (23-28 wt.%) and is prepared through proportioning, smelting in inertial gas, casting alloy ingot, smelting the alloy ingot at 2200 deg.C in inertial gas, and fast-solidifying spray shaping by using high-purity inertial gas as atomizing gas under 0.5-10 MPa of atomizing pressure. Its advantages are fine and uniform microstructure, and high resistance to high voltage and electric breaking-through.

Подробнее
Номер записи: 22
16-05-2023 дата публикации

Application of grass carp APO-14K protein in preparation of antibacterial preparation

Номер: CN116115733A
Автор: ZHANG XUJIE, ZHANG YONG'AN, HU YAZHEN, RONG KEMING
Принадлежит:

The invention belongs to the technical field of genetic engineering, and particularly relates to application of grass carp APO-14K protein in preparation of antibacterial preparations. The amino acid sequence of the grass carp antibacterial protein APO-14K disclosed by the invention is as shown in SEQ ID NO: 1. Escherichia coli BL21 (DE3) Rosetta is adopted for expressing the grass carp antibacterial protein APO-14K, the APO-14K recombinant protein is obtained after Ni < 2 + >-TED agarose gel column purification, enterokinase digestion and ion-exchange chromatography purification, and it is found that the APO-14K protein has remarkable bacteriostasis and sterilization effects on outer membrane permeabilized gram-negative bacteria and gram-positive bacteria. The compound can be used for preparing broad-spectrum antibacterial preparations or antibacterial drugs, and has high application value.

Подробнее
Номер записи: 23
14-07-2023 дата публикации

Aluminum-zinc-magnesium-copper alloy wire for rivet fasteners and preparation method of aluminum-zinc-magnesium-copper alloy wire

Номер: CN116426802A
Автор: GAO GUANJUN, LI XIWU, XIONG BAIQING, ZHANG YONG'AN, LI ZHIHUI, WEN KAI, LI YANAN, YAN LIZHEN, YAN HONGWEI, LIU HONGWEI, SHI GUOHUI, LI YING
Принадлежит:

The invention provides a preparation method of an aluminum-zinc-magnesium-copper alloy wire for a high-performance rivet fastener, which comprises the following steps of: 1, preparing materials; 2, casting; step 3, homogenization and quenching treatment; fourthly, hot rough rolling is conducted; 5, hot finish rolling; 6, multi-pass intermediate annealing and cold drawing; 7, solution treatment; and eighthly, overaging treatment is conducted. The method solves the problem that the aluminum alloy wire produced by the existing method is easy to crack in the cold heading process and cannot meet the application requirements. The tensile strength range of the aluminum-zinc-magnesium-copper alloy wire in a supply state is 235-330 MPa, and rivet fasteners are not cracked in a cold heading test (3000). After solution and aging treatment, the tensile strength of the alloy wire is higher than 470 MPa, the yield strength of the alloy wire is higher than 380 MPa, the percentage elongation after fracture ...

Подробнее
Номер записи: 24
29-08-2023 дата публикации

Application of GapN protein in preparation of tilapia streptococcus agalactiae subunit vaccine

Номер: CN116650631A
Автор: ZHANG YONG'AN, ZHOU YANG, WANG YANG, RHO, DO JUNG
Принадлежит:

The invention discloses application of a GapN protein in preparation of a tilapia streptococcus agalactiae subunit vaccine. The amino acid sequence of the GapN protein is as shown in SEQ ID NO. 2. According to the present invention, tilapia streptococcus agalactiae is adopted as a research object, a gapN gene is cloned from a tilapia source streptococcus agalactiae genome, the gapN gene is connected with a pET-32a (+) vector to construct an expression vector, prokaryotic expression and purification are performed in E.coli BL21 (DE3), the recombinant GapN protein provided by the present invention is subjected to sterile treatment, and then is mixed with an adjuvant according to a ratio to obtain the recombinant GapN protein subunit vaccine, through intraperitoneal injection of tilapia mossambica, the survival rate of tilapia mossambica after toxic attack can be effectively improved, the relative immune protection rate which can reach 93.3% at most is provided, safety tests prove that no ...

Подробнее
Номер записи: 25
02-05-2023 дата публикации

Mouse anti-grass carp IgT monoclonal antibody as well as preparation method and application thereof

Номер: CN116041526A
Автор: ZHANG XUJIE, ZHANG YONG'AN, LIU BIN
Принадлежит:

The invention discloses a mouse anti-grass carp IgT monoclonal antibody and a preparation method and application thereof.The mouse anti-grass carp IgT monoclonal antibody comprises a heavy chain variable region and a light chain variable region, a CDR region of the heavy chain variable region comprises three sequences shown in SEQ ID NO.3-5, and a CDR region of the light chain variable region comprises three sequences shown in SEQ ID NO.6-8; the mouse anti-grass carp IgT monoclonal antibody can be secreted by a hybridoma cell strain IgT-6H6G11 with the preservation number of CCTCC (China Center for Type Culture Collection) NO: C202288. The mouse anti-grass carp IgT monoclonal antibody provided by the invention can identify a grass carp IgT heavy chain under a reducing condition, and can identify monomer and polymer forms of grass carp IgT under a non-reducing condition, and the monoclonal antibody cannot identify chimeras IgMT1, IgMT2 and IgM. A foundation is laid for establishment of a ...

Подробнее
Номер записи: 26
05-05-2023 дата публикации

Homogenizing heat treatment method for high-Cu-content ultrahigh-strength corrosion-resistant 7xxx series aluminum alloy

Номер: CN116065108A
Автор: WEN KAI, LI XIWU, XIONG BAIQING, ZHANG YONG'AN, LI ZHIHUI, LI YANAN, YAN HONGWEI, YAN LIZHEN, SHI GUOHUI, GAO GUANJUN, ZHU KAI, XIAO WEI, LIU HONGWEI, YU MINGYANG, LI YING
Принадлежит:

The invention relates to a homogenization heat treatment method for a high-Cu-content ultrahigh-strength corrosion-resistant 7xxx series aluminum alloy, and belongs to the technical field of metal heat treatment. The method comprises the following steps: (1) first-stage homogenization heat treatment: rapidly heating an alloy ingot to 465-480 DEG C from room temperature, and preserving heat for 18-30 hours; (2) second-stage homogenization heat treatment: continuously heating the alloy ingot to 485-500 DEG C, preserving heat for 24-36 hours, and then quenching; (3) third-stage homogenization heat treatment: rapidly heating the quenched alloy ingot to 360-390 DEG C, and preserving heat for 12-18 hours; and (4) air-cooling the alloy ingot obtained in the step (3) to room temperature. By means of the homogenizing heat treatment method, good redissolution of the AlZnMgCu phase and the Cu-rich phase can be effectively achieved, meanwhile, the size and number density of the precipitated dispersed ...

Подробнее
Номер записи: 27
05-05-2023 дата публикации

Lightweight high-strength corrosion-resistant aluminum alloy material and preparation method thereof

Номер: CN116065066A
Автор: XIONG BAIQING, LI XIWU, ZHANG YONG'AN, LI ZHIHUI, YAN HONGWEI, GAO GUANJUN, YAN LIZHEN, LI YANAN, WEN KAI, LIU HONGWEI, XIAO WEI, SHI GUOHUI, ZHU KAI
Принадлежит:

The invention discloses a light high-strength corrosion-resistant aluminum alloy material and a preparation method thereof. The aluminum alloy comprises 6.0 wt%-10.0 wt% of Mg, 1.0 wt%-3.5 wt% of Zn, 0.1 wt%-1.3 wt% of Si, at least one of Mn, Cu, Zr, Sc and Ti with the total content not larger than 0.8 wt%, and the balance Al and inevitable impurities. The preparation method of the alloy deformation processing material comprises the following steps: (1) manufacturing an aluminum alloy cast ingot; (2) carrying out homogenizing heat treatment and/or preheating on the obtained cast ingot; (3) thermally processing the cast ingot into a required processing material form or a pre-processing material through a thermal deformation processing method; (4) optionally reheating the pre-processing material, and processing the pre-processing material into a required processing material form through cold deformation; (5) carrying out solid solution heat treatment on the processing material; (6) the machined ...

Подробнее
Номер записи: 28
26-05-2023 дата публикации

Conglomerate heterogeneity evaluation method based on edge segmentation and region filling

Номер: CN116165264A
Автор: GONG AN, ZHANG YONG'AN, LI BINGHAN, WEI JINMING, ZHANG XINGYU, GENG HANG, ZHANG HENG, WU SHUHUI
Принадлежит:

The invention provides a conglomerate heterogeneity evaluation method based on edge segmentation and region filling. The method comprises the following steps: identifying gravels on a side sampling image of a conglomerate core through combination of edge segmentation and a region filling algorithm, and obtaining a gravel-impurity base segmentation image; three main conglomerate heterogeneity influence parameters including the gravel content, the gravel particle size and the gravel roundness are intelligently counted through a computer; selecting a small-sample-size conglomerate core side expansion drawing to carry out a rock ultrasonic experiment, and establishing a heterogeneity model suitable for the reservoir; and substituting the statistical parameters into the heterogeneity model, and calculating a heterogeneity coefficient. According to the evaluation method, the heterogeneity degree of the conglomerate can be quantitatively analyzed only through core picture collection, computer ...

Подробнее
Номер записи: 29