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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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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 15. Отображено 15.
18-04-2023 дата публикации

Vehicle U-turn control method and device and vehicle

Номер: CN115973155A
Автор: CUI XIAOFEI, HE DALONG, TANG XING, JING JIAZENG, HATA YUTA, CAO DA
Принадлежит:

The invention provides a vehicle U-turn control method and device and a vehicle. The method comprises the steps that firstly, after it is detected that a crawling U-turn function is started, a vehicle acquires the angle of a steering wheel, and whether the vehicle meets a preset crawling U-turn condition or not is determined according to the steering angle of the steering wheel; when the crawling U-turn condition is met, the vehicle obtains transmission gear information and transfer case gear information, the target vehicle speed of the vehicle in the crawling U-turn process is obtained according to the information, and then the brake pressure of inner side front wheels and the brake pressure of inner side rear wheels are calculated and obtained when the vehicle turns around according to the angle of a steering wheel and the wheel base and the wheel track of the vehicle. Finally, the vehicle is controlled to conduct crawling turning according to the target vehicle speed, the brake pressure ...

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Номер записи: 1
02-05-2023 дата публикации

Method for preparing 5-chloromethylfurfural from biomass in presence of low-concentration hydrochloric acid through one-pot method

Номер: CN116041287A
Автор: LIN LU, NONG GUITONG, LI ZHENG, ZENG XIANHAI, HAO WEIWEI, SUN YONG, TANG XING
Принадлежит:

The invention discloses a method for preparing 5-chloromethylfurfural from biomass in the presence of low-concentration hydrochloric acid by a one-pot process, which comprises the following steps: (1) adding a biomass raw material, hydrochloric acid, CaCl2, water and an organic solvent into a reaction container, mixing, sealing, heating to a constant temperature, stirring, and cooling to room temperature after the reaction is finished to obtain a reaction solution; wherein the concentration of the hydrochloric acid is 2-3 mol/kg; (2) extracting the reaction solution in the step (1) by using an organic solvent to obtain an extract; (3) removing acid and water from the extract liquor obtained in the step (2) through CaCO3 and anhydrous MgSO4, and concentrating to obtain a CMF crude product; and (4) carrying out reduced pressure distillation on the concentrated solution in the step (3), collecting fractions, and repeating the operation to obtain a pure CMF product. According to the method, ...

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Номер записи: 2
16-01-2020 дата публикации

PREPARATION METHOD FOR DOUBLE-SENSITIVITY CELLULOSE-BASED AEROGEL

Номер: WO2020011240A1
Автор: ZENG, Xianhai, YAN, Guihua, SUN, Yong, TANG, Xing, LIN, Lu, LEI, Tingzhou
Принадлежит:

Disclosed is a preparation method for a double-sensitivity cellulose-based aerogel. Dialdehyde cellulose, a dialdehyde cellulose/dimethylaminoethyl methacrylate copolymer, and a dialdehyde cellulose/dimethylaminoethyl methacrylate/polymine copolymer are prepared successively, then freezing drying is performed, and a product can be obtained; the product is the double-sensitivity cellulose-based aerogel, the accumulated adsorbing capacity of the aerogel reaches 250 mg/g, and the accumulated releasing amount of the aerogel in a 0.2% NaC (pH<3) solution, a 0.05 mol/L NaH2PO4 (pH=3-8) solution, or a NaOH (pH>8) solution reaches 63-90%; the obtained product has the advantages that the mass is low, the biocompatibility is good, the porosity is high, and pH/temperature double-sensitivity is high, and the like; the product can be used as a biomedical material, and has a wide application prospect in drug sustained release, wound dressings and other aspects.

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Номер записи: 3
23-06-2023 дата публикации

Intelligent monitoring equipment for 5G communication power supply

Номер: CN116317154A
Автор: ZENG JIWEN, TANG XING
Принадлежит:

The invention discloses intelligent monitoring equipment for a 5G communication power supply, and the equipment comprises a current monitoring module which is used for obtaining the current working current of a rectification module operating in a power supply system, and the current load total current of the power supply system; the comparison module is used for comparing the current total load current with the set load current and outputting a first comparison result, and comparing the current working current with the set current interval of the rectification module and outputting a second comparison result; the calculation module is used for obtaining a safety load according to the first comparison result; and the control module is used for selectively closing the rectifier module in operation or starting the rectifier module in a dormant state according to the second comparison result and the safe load. According to the technical scheme, the intelligent monitoring equipment for the 5G ...

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Номер записи: 4
11-07-2023 дата публикации

Hydraulic suspension system, vehicle and vehicle control method and system

Номер: CN116409108A
Автор: CHEN GONGDA, LIAO YINSHENG, LIU PENG, TANG XING
Принадлежит:

The invention discloses a hydraulic suspension system, a vehicle and a vehicle control method and system.The hydraulic suspension system comprises a front suspension, a rear suspension, a rear suspension, a hydraulic system and a control system, the rear suspension comprises a rear suspension shock absorber; the central hydraulic cylinder comprises a first chamber, a second chamber and a piston, the first chamber is communicated with the front suspension shock absorber, the second chamber is communicated with the rear suspension shock absorber, and under the action of the front suspension shock absorber or the rear suspension shock absorber, the piston enables the volume change of the first chamber to be consistent with that of the second chamber. The central hydraulic cylinder is arranged in the hydraulic suspension system, and the piston of the central hydraulic cylinder is driven to change the volumes of the first chamber and the second chamber under the action of the front suspension ...

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Номер записи: 5
04-04-2023 дата публикации

Application of low-boiling-point solution in purification of 2, 5-furandicarboxylic acid and purification method of 2, 5-furandicarboxylic acid

Номер: CN115894411A
Автор: TANG XING, ZHUANG NIHONG, LIN LU, ZENG XIANHAI, SUN YONG, LI ZHENG, YANG SHULIANG
Принадлежит:

The invention discloses application of a low-boiling-point solution in purification of 2, 5-furandicarboxylic acid and a purification method of 2, 5-furandicarboxylic acid. The method comprises the following steps: heating a low-boiling-point solution, dissolving a 2, 5-furandicarboxylic acid crude product, carrying out decoloration and purification treatment by utilizing solubility difference and regulating and controlling a cooling rate to obtain white crystals of 2, 5-furandicarboxylic acid, and recovering and recycling the low-boiling-point solution, the low-boiling-point solution contains an oxygen-containing heterocyclic ring solvent, and the boiling point of the low-boiling-point solution is lower than 101 DEG C; the oxygen-containing heterocyclic ring solvent comprises at least one of 1, 4-dioxane, tetrahydrofuran, 2-methyl furan or furan, and accounts for 30.78-100.00 wt% of the low-boiling-point solution. According to the method, the technical bottleneck that high-efficiency crystallization ...

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Номер записи: 6
25-04-2023 дата публикации

Catalyst, application thereof and method for preparing 2, 5-furandicarboxylic acid through alkali-free catalysis of 5-hydroxymethylfurfural

Номер: CN116003355A
Автор: TANG XING, XIE WEIZHEN, LIN LU, ZENG XIANHAI, SUN YONG, LI ZHENG, YANG SHULIANG
Принадлежит:

The invention discloses a catalyst, application of the catalyst and a method for preparing 2, 5-furandicarboxylic acid through alkali-free catalysis of 5-hydroxymethylfurfural. The catalyst is recorded as A/MnaBbOx-yVC, A is Pt, Ru, Pd or Au, B is Co, Ce, Cu or Ni, a/b is equal to 1.5-14, y is equal to 0.1-0.4, and the loading capacity z of B is equal to 1-5 wt%. When B is Pt, the catalyst is a Pt-based catalyst with the highest activity under an alkali-free condition at present. The catalyst can efficiently catalyze oxidation synthesis of 2, 5-furandicarboxylic acid from 5-hydroxymethylfurfural in green solvent water under mild alkali-free reaction conditions. The reaction is carried out for 1-2 hours under the alkali-free catalysis conditions of air or pure oxygen at the temperature of 80-130 DEG C and the pressure of 0.5-2.5 MPa, and the yield of the 2, 5-furandicarboxylic acid can reach 95%. The invention effectively solves the problem that the Pt-based catalyst generally needs 9-14 ...

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Номер записи: 7
30-06-2023 дата публикации

Device and method for testing service life of snake bone of endoscope

Номер: CN116358998A
Автор: WANG QI, WANG ZONGWEI, MA XIAOJUN, LI GUO, WU WENRONG, WAN XIANGYU, ZHANG JUAN, TANG XING
Принадлежит:

The invention discloses a device and a method for testing the service life of a snake bone of an endoscope. The traction driving table is provided with a moving end in a sliding manner; a tension sensor; the rotation driving table is arranged on the upper surface of the base plate, a pair of shifting rods are detachably installed on the rotation driving table, and an image measuring head is arranged over the rotation driving table; the clamping table is arranged between the traction driving table and the rotation driving table, a V-shaped groove is formed in the clamping table, a saddle-shaped fixing piece is arranged above the V-shaped groove, and a threaded hole is formed in the saddle-shaped fixing piece. According to the method, the service life of the endoscope snake bone without the drawn wire can be measured, and a basis is provided for judging the structural design quality of the endoscope snake bone; the service life of the endoscope snake bone assembled with the drawn wire can ...

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Номер записи: 8
02-05-2023 дата публикации

Accurate separation method of double-tower low-carbon mixed alcohol

Номер: CN116041150A
Автор: LIN LU, CHEN GAOFENG, TANG XING, YANG SHULIANG
Принадлежит:

The invention relates to the technical field of energy conversion and utilization, in particular to a precise separation method of double-tower low-carbon mixed alcohol. The separation method comprises the following steps: (1) preheating a low-carbon mixed alcohol-water mixture with the water content of 60-65%, pumping the preheated low-carbon mixed alcohol-water mixture into the tower bottom of a water removal tower, and obtaining mixed steam from the tower top of the water removal tower; condensing and refluxing the mixed steam to obtain a low-carbon alcohol mixed solution; and (2) preheating the low-carbon alcohol mixed solution obtained in the step (1), pumping the preheated low-carbon alcohol mixed solution into a methanol removal tower, and obtaining rectified steam from the top of the methanol removal tower. According to the precise separation method for the double-tower low-carbon mixed alcohol, gas-liquid balance in the towers can be precisely regulated and controlled, controllable ...

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Номер записи: 9
09-06-2023 дата публикации

Modular high-voltage power electronic transformer and working method

Номер: CN116247940A
Автор: ZHANG YOUJUN, YAO CHONG, MENG XU, FENG FENG, TANG XING, YONG CONGXIA, SHI ZHONGJIE
Принадлежит:

The invention belongs to the technical field of power systems, and particularly relates to a modular high-voltage power electronic transformer and a working method.The modular high-voltage power electronic transformer comprises a plurality of transformer sub-modules, and each transformer sub-module comprises an input cycle conversion module, a high-frequency transformer module and an output cycle conversion module; the input end of the input cycle conversion module serves as the input end of the transformer sub-module, the output end of the input cycle conversion module is connected with the input end of the high-frequency transformer module, and the output end of the high-frequency transformer module is connected with the input end of the output cycle conversion module. And the output end of the output cycle conversion module is used as the output end of the transformer sub-module. According to the invention, the highest voltage level borne by the circuit is improved in a leap-over manner ...

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Номер записи: 10
18-08-2023 дата публикации

Multi-channel video original stream receiving system and method based on TCP protocol

Номер: CN116614208A
Автор: CHEN WANG, TANG XING, LI XUE
Принадлежит:

The invention discloses a multipath video original stream receiving system and method based on a TCP (Transmission Control Protocol), the system comprises a CPU (Central Processing Unit), a network card and a plurality of optical fiber interface modules, the CPU is connected with the network card through a PCIE (Peripheral Component Interconnect Express) bus, and the network card is directly connected with the plurality of optical fiber interface modules through a register configured with a network card chip; the CPU is used for sending a message to the network card, if the confirmation of the message returned by the network card is not received within the set round-trip time delay, the message is retransmitted until the confirmation of the message returned by the network card is received, and the message carries a request for transmitting the original video stream to the network card. According to the invention, the connection between the CPU end and the multi-channel video original stream ...

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Номер записи: 11
25-07-2023 дата публикации

Composite ceramic core for single crystal turbine blade and preparation method of composite ceramic core

Номер: CN116477960A
Автор: TANG XING, YANG ZENGHUI, LI HUI, HAN YU, WEN GUANGPING, YANG RUIQI, LIU NING, LIU RONG
Принадлежит:

The invention discloses a composite ceramic core for a single crystal turbine blade and a preparation method of the composite ceramic core. The composite ceramic core comprises the following components in percentage by mass: 50-80% of quartz glass powder, 10-30% of zircon powder, 5-15% of cristobalite powder and 3-5% of glass fiber. The preparation method comprises the following steps: uniformly mixing quartz glass powder, zircon powder, cristobalite powder and glass fiber, adding a plasticizer, pressing to form a ceramic core blank, and roasting the ceramic core blank to form the composite ceramic core for the single crystal turbine blade. The ceramic core can be sintered at a low temperature of 1200 DEG C or below, has excellent dimensional stability at 1550-1600 DEG C, has a high-temperature deflection of less than or equal to 0.1 mm at 1550 DEG C, a high-temperature deflection of less than or equal to 0.2 mm at 1600 DEG C, a sintering shrinkage rate of less than or equal to 0.6%, and ...

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Номер записи: 12
31-08-2021 дата публикации

Connecting device for rear end of dust collector rod

Номер: CN214073144U
Автор: TANG XING, 唐兴
Принадлежит: ZHENJIANG KANGYUAN ELECTRICAL APPLIANCE CO LTD, ZHENJIANG KANGYUAN ELECTRICAL APPLIANCE CO., LTD., 镇江康元电器有限公司

The utility model relates to a connecting device for the rear end of a dust collector rod. The connecting device comprises a shell (1), a connecting shaft (2), a bayonet socket (3), a wire hanging shaft (4) and a wire hanging frame (5), a connecting hole penetrating through the shell and the interior of the connecting shaft is formed in the connecting shaft, a rear end connecting hole and a front end connecting hole are formed in the rear end of the connecting hole, the cross section shapes of the rear end connecting hole and the front end connecting hole are different, and through the different cross section shapes, axial positioning is stable when one end of a dust collector rod is installed; the problems of installation defects and the like possibly caused by improper installation are avoided; the left side of the shell extends leftwards to be provided with the wire hanging shaft, the wire hanging shaft is connected with the wire hanging frame extending backwards, electric appliance ...

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Номер записи: 13
05-05-2023 дата публикации

Method for preparing 2, 5-hexanedione from 5-chloromethylfurfural

Номер: CN116063164A
Автор: ZENG XIANHAI, CHEN BINGLIN, HUANG RENJIE, YU ZHENDONG, LI ZHENG, TANG XING, LIN LU
Принадлежит:

The invention discloses a method for preparing 2, 5-hexanedione by using 5-chloromethylfurfural, which comprises the following steps: adding 5-chloromethylfurfural, a catalyst, polymethylhydrosiloxane, tetrahydrofuran and water into a thick-wall pressure bottle, and catalyzing the 5-chloromethylfurfural to synthesize the 2, 5-hexanedione. According to the method, polymethylhydrosiloxane is used as one of the raw materials for the first time, efficient synthesis of 2, 5-hexanedione is achieved through 5-chloromethylfurfural, and the used raw material 5-chloromethylfurfural can be directly prepared from biomass at a high yield. The polymethylhydrosiloxane is low in price, non-toxic and stable, the reaction process is safe, green and environment-friendly, the product selectivity is high, the yield of the 2, 5-hexanedione exceeds that of all reaction systems which take 5-hydroxymethylfurfural as a raw material and are reported at present, and the method has great industrial application value ...

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Номер записи: 14
27-06-2023 дата публикации

Zirconium-nitrogen coordination catalyst, preparation method and application of zirconium-nitrogen coordination catalyst in preparation of furfuryl alcohol by selective reduction of furfural

Номер: CN116332864A
Автор: HU LEI, GU QINYIN, CHEN KERU, SHEN XINMING, ZHENG JINGYI, WANG XIAOYU, JIANG YETAO, WU ZHEN, TANG XING, LIN LU
Принадлежит:

The invention discloses a novel zirconium-nitrogen coordination catalyst, which is prepared from zirconium ions and nitrogen-containing organic ligands through a solvothermal self-assembly method, only contains Lewis acidic sites and Lewis alkaline sites, and does not contain acidic sites. The existence of Lewis acid-base sites can efficiently catalyze furfural to perform MPV transfer hydrogenation reaction to synthesize furfuryl alcohol, and the deficiency of acid sites can avoid side reactions such as etherification and acetalization, so that the yield and selectivity of furfuryl alcohol are further improved. In addition, the catalyst also shows good catalysis universality, and biomass carbonyl compounds such as 5-methylfurfural, 5-hydroxymethylfurfural, benzaldehyde, cyclohexanone and the like can be converted into corresponding high-added-value products.

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Номер записи: 15