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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

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Мониторинг СМИ

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

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
30-06-2023 дата публикации

Intelligent gear shaft machining device

Номер: CN116352192A
Принадлежит:

The invention discloses an intelligent gear shaft machining device and belongs to the technical field of machining, the intelligent gear shaft machining device comprises a grinding wheel and two tooth side supporting assemblies arranged on the two sides of the grinding wheel, and each tooth side supporting assembly comprises a telescopic supporting frame, a connecting support, a first telescopic device, a fixing disc, a connecting plate, a first locking piece and a profiling tooth; a transmission shaft is rotationally arranged between the output ends of the telescopic supporting frames of the two tooth side supporting assemblies, and the grinding wheel is in transmission connection with the transmission shaft and driven by a rotation driving assembly to rotate. The fixed disc is connected to the output end of the telescopic supporting frame, the inner end of the connecting plate is rotatably connected and matched with the fixed disc and can be locked with the fixed disc through a first ...

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18-11-2015 дата публикации

Portable rail mills device of rough milling of car

Номер: CN0204780490U
Принадлежит:

The utility model provides one kind portable rail mills device of rough milling of car (106), it includes fuselage (1'), main gear (2') are equipped with in fuselage (1'), this main gear (2') output is connected to and mills set the drive shaft of (3'), hydraulic drive vertical migration and positioner (4') are still connected in fuselage (1'), electronic horizontal migration and positioner (5') are still connected in this hydraulic drive vertical migration and positioner (4'), mill set (3') solid dress on fuselage (1'), it is equipped with knife rest (6') on the circumferencial direction of (3') to mill set, be fixed with milling cutter on knife rest (6'). The utility model provides a portable rail mills device of rough milling of car not only can maintain the rail shape that the rail carry out one shot forming, and repair effect is good, and the operating efficiency is high, owing to mill the tool bit and comprise the combination formula knife rest of installing on milling the dish, consequently ...

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30-10-2020 дата публикации

Transition tray in automatic cone tray loading system

Номер: CN0211810763U

The utility model provides a transition tray in an automatic conical body tray loading system. The transition tray comprises a tray body, a horizontal driving device, an opening and closing device, afirst mounting device, a second mounting device and an elastic limiting device, the horizontal driving device is used for driving the disc body to move in the horizontal direction, a plurality of openholes are formed in the disc body and used for containing conical bodies, and an opening and closing device used for opening and closing the open holes is installed at the bottom of the disc body. The horizontal driving device is detachably connected with the disc body through the first installation device, the opening and closing device is detachably connected with the bottom of the disc body through the second installation device, an elastic limiting device acts on the opening and closing device, the elastic limiting device is installed at the installation position of the first installationdevice ...

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10-12-2014 дата публикации

Application of tetraphenyl ethylene derivatives in detecting activity of transmethylase and concentration of transmethylase inhibitor

Номер: CN104195242A
Принадлежит:

The invention provides application of tetraphenyl ethylene derivatives in detecting activity of transmethylase, belonging to the technical field of biology. The detection method comprises the following steps: preparing quenching-molecule-modified double-chain nucleic acid; reacting the quenching-molecule-modified double-chain nucleic acid with S-adenosylmethionine, different concentrations of transmethylase and an enzyme reaction buffer solution to obtain a mixed solution; and finally, reacting the obtained mixed solution with a tetraphenyl ethylene derivative water solution, and detecting the activity of the transmethylase. The invention also provides application of the tetraphenyl ethylene derivatives in detecting the concentration of the transmethylase inhibitor. The detection method is simple and quick, and has high sensitivity.

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20-08-2014 дата публикации

Coronene derivative probe and preparation method thereof, and protein detection method based on coronene derivative probe and aptamer

Номер: CN103992788A
Принадлежит:

The invention provides a coronene derivative probe and a preparation method thereof and a protein detection method based on the coronene derivative probe and aptamer. The objective of the invention is to overcome the problems of tedious operation, complex process and low sensitivity of a conventional protein detection method. The probe is 1,2,7,8-tetra-(4-trimethylamine butyloxycarbonyl)-coronene and has four charges and water solubility. The invention provides the preparation method for the coronene derivative probe. The invention further provides the protein detection method based on the coronene derivative probe and the aptamer. The protein detection method is marker-free, simple and fast and does not need covalent modification; moreover, a fluorescence enhanced signal is given out in detection, so compared with a fluorescence weakened signal, higher sensitivity is obtained.

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27-08-2014 дата публикации

Fluorescence detection method for copper ion based on click chemistry

Номер: CN104007092A
Принадлежит:

The invention provides a fluorescence detection method for copper ions based on click chemistry and belongs to the technical field of chemical analysis and detection. A short single chain nucleic acid which is modified by an azide group, a short single chain nucleic acid which is modified by an alkynyl group and a nucleic acid which is used as a linking template are respectively dissolved in a Tris-HCl buffer solution to prepare a nucleic acid solution and form a mixed solution. Ascorbic acid, water and a Tris-HCl buffer solution are added in the mixed solution to form a detection system. A to-be-detected sample is added to the detection system. A fluorescence detection process is carried out to the fluorescence intensity of the detection system. Copper ion concentration of the corresponding to-be-detected sample is calculated with a known copper ion concentration being an abscissa and a corresponding fluorescence intensity value being an ordinate. The fluorescence detection method employs ...

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22-08-2023 дата публикации

Halogen-free flame-retardant high-toughness PET material and preparation method thereof

Номер: CN116622200A
Автор: ZHOU HUIPENG, GONG YUHUI
Принадлежит:

The invention belongs to the technical field of halogen-free flame-retardant PET materials, and particularly relates to a halogen-free flame-retardant high-toughness PET material and a preparation method thereof. The halogen-free flame-retardant high-toughness PET material comprises the following substances in parts by weight: 45-80 parts of PET resin; 0-20 parts of porous inorganic mineral particles; 0-2 parts of an antioxidant; 0-2 parts of a coupling agent; 0-20 parts of a toughening agent; the porous inorganic mineral particles comprise at least one of kaolinite, montmorillonite, vermiculite and illite, and flame-retardant particles are loaded on the porous inorganic mineral particles. According to the invention, the porous inorganic mineral particles are preferably selected to load and effectively add the flame-retardant particles, so that the loaded flame-retardant particles and the PET resin form good filling and dispersing performance, and the toughness strength of the PET material ...

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26-08-2015 дата публикации

Mobile type steel rail milling vehicle

Номер: CN104863029A
Принадлежит:

The invention discloses a mobile type steel rail milling vehicle. The mobile type steel rail milling vehicle comprises an operation vehicle (11) and a power vehicle (12) which are connected with each other, wherein the operation vehicle (11) comprises an operation vehicle frame (101) which is symmetrical with respect to a transverse central shaft of the operation vehicle frame (101); a front cab (102) is arranged at the right side of the upper part of the operation vehicle frame (101); an air compressor room (103) is arranged at the left side of the front cab (102), and an air compressor is arranged in the air compressor room (103); an electrical room (104) is arranged at the left side of the air compressor room (103), and a tool rest replacement room (105) is arranged at the left side of the electrical room (104); an inverted-U-shaped opening (108) is transversely formed in the middle part of the operation vehicle frame (101) along the vehicle body; and the operation vehicle (11) further ...

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18-11-2015 дата публикации

Portable rail mills finish milling device of car

Номер: CN0204780491U
Принадлежит:

The utility model provides a portable rail mills finish milling device of car, it includes at least one toolframe (1), drive arrangement (2) are milled in this toolframe (1) connection, toolframe (1) lower extreme still is equipped with milling head (3), the output that mills drive arrangement (2) passes through the actuating shaft connection of mechanical transmission and milling head (3), hydraulic drive vertical migration and positioner (4) and a set of electronic horizontal migration and positioner (5) are still connected to toolframe (1) one side, every hydraulic drive vertical migration of group and positioner (4) with electronic horizontal migration and positioner (5) are connected, and electronic horizontal migration and positioner (5) are used for the location milling cutter's horizontal position. The utility model provides a portable rail mills finish milling device of car not only can carry out once more sharp rail shape to the rail of rough milling and maintain, and repair effect ...

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19-08-2015 дата публикации

Finish-milling unit of mobile rail-milling car

Номер: CN104846707A
Принадлежит:

A finish-milling unit of a mobile rail-milling car comprises at least one tool rest (1); the tool rests (1) are connected with milling driving devices (2); the lower end of each tool rest (1) is provided with a milling head (3); the output end of each milling driving device is connected with a drive shaft of the corresponding milling head through a mechanical transmission device; one side of each tool rest (1) is further connected with a group of hydraulic vertical movement and positioning devices (4) and a group of electric horizontal movement and positioning devices (5); each group of hydraulic vertical movement and positioning devices (4) is connected with the corresponding electric horizontal movement and positioning devices (5); the electric horizontal movement and positioning devices (5) are used for positioning the horizontal positions of milling tools. The finish-milling unit has the advantages that a steel rail which is roughed can be finely dressed again, dressing effect is good ...

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16-09-2015 дата публикации

Rough milling device of mobile rail milling vehicle

Номер: CN104911965A
Принадлежит:

The invention relates to a rough milling device (106) of a mobile rail milling vehicle. The rough milling device comprises a machine body (1'), wherein the machine body (1') is provided with a main transmission device (2'), the output end of the main transmission device (2') is connected to a driving shaft of a milling disk (3'), a hydraulic pressure driving perpendicular moving and positioning device (4') is also connected to the machine body (1') and is also connected with an electric horizontal moving and positioning device (5'), and the milling disk (3') is fixedly mounted on the machine body (1'); cutter frames (6') are mounted on the milling disk (3') in the circumferential direction, and milling cutters are fixed on the cutter frames (6'). The rough milling device (106) of the mobile rail milling vehicle, provided by the invention, can trim the orbifold, formed in one piece, of the rail, and is good in remediation effect and high in working performance. Each milling cutter head consists ...

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18-11-2015 дата публикации

Portable rail mills car

Номер: CN0204780489U
Принадлежит:

The utility model provides a portable rail mills car, includes interconnect operation car (11) and power car (12), and preceding cab (102) are equipped with including operation car frame (101), operation car frame (101) about its horizontal center pin symmetry, the right side on operation car frame (101) upper portion in operation car (11), and be equipped with between the air compressor machine (103) in the left side of preceding cab (102), and install inside (103) between the air compressor machine has the air compressor machine, electric equipment compartment (104) are equipped with in (103) left side between the air compressor machine, and be equipped with between the knife rest change (105) in the left side of electric equipment compartment (104), and the middle part of operation car frame (101) transversely sets up " intersection of " shape opening (108) along the automobile body, and operation car (11) are still including rough milling unit (106) and finish milling unit (109). The ...

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23-06-2023 дата публикации

Intelligent forging and pressing equipment for hollow shaft of new energy automobile

Номер: CN116274800A
Принадлежит:

The invention discloses intelligent forging and pressing equipment for a hollow shaft of a new energy automobile, and belongs to the technical field of mechanical forging equipment, the intelligent forging and pressing equipment comprises a rack, an outer hammer head in vertical sliding fit relative to the rack, a vertical displacement driving device for driving the outer hammer head to move in the vertical direction, and a striking assembly for connecting the vertical displacement driving device and the outer hammer head; the beating assembly comprises an upper connecting support, upper connecting rod frames, a first elastic connecting assembly, a lower pressing rod and a lower connecting support, the upper ends of the upper connecting support are fixedly connected to the output end of the vertical displacement driving device, the upper ends of the upper connecting rod frames are hinged to the side faces of the upper connecting support, and the middles of the two upper connecting rod frames ...

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28-07-2023 дата публикации

Preparation method and application of modified polyphenyl ether foamed sheet

Номер: CN116496613A
Автор: LI WEI, AN YUXIAN, ZHOU HUIPENG
Принадлежит:

The invention relates to a preparation method and application of a modified polyphenyl ether foamed sheet, and belongs to the technical field of new material preparation. By adopting the preparation method provided by the invention, the continuous production of the high-magnification flame-retardant polyphenyl ether plate can be realized by a production process combining extrusion modification with mould pressing foaming, and the production efficiency is high. The PA6 modified polyphenyl ether is adopted, so that the orientation of a molecular chain can be overcome, the free volume among molecules can be increased, and a plate of 8-10mm can be smoothly extruded and molded. A supercritical fluid process is adopted for mold pressing foaming, the foam hole diameter is small (20-50 microns), the foaming ratio is high (10-20 times), the limit oxygen index is high (26-32%), and the combustion grade reaches the UL94-V0 grade. PA6 is used for modifying polyphenyl ether, so that the product is high ...

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