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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 21. Отображено 21.
26-03-2014 дата публикации

Phosphorus-nitrogen copolyester material containing cyclotriphosphonitrile group and preparation method thereof

Номер: CN103665358A
Принадлежит:

The invention relates to a phosphorus-nitrogen copolyester material containing a cyclotriphosphonitrile group and a preparation method thereof. The structural formula of the copolyester material is shown in the specification. According to the invention, on the premise of keeping the excellent heat stability of a wholly aromatic copolyester, the phosphorus-nitrogen low-melting-point copolyester is easily soluble in high-polarity organic solvent, has enhanced the machining property, and has high carbon residual rate at 600 DEG C, thus providing a new choice for mechanical high-temperature solid lubrication materials.

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30-06-2023 дата публикации

Method and system for estimating FRET sensitization channel super-resolution SIM image reconstruction parameters

Номер: CN116362970A
Принадлежит:

The invention discloses a method and a system for estimating super-resolution SIM image reconstruction parameters of an FRET sensitization channel. The method comprises the following steps: acquiring an FRET three-channel original image data set modulated by structured light and an optical transfer function (OTF) of the FRET three-channel original image data set; fRET three-channel broadened frequency spectrum images are obtained through Fourier transform and frequency spectrum shift, and reconstruction parameters of DD, DA and AA channel image groups are obtained from the FRET three-channel broadened frequency spectrum images; replacing the structured light illumination frequency vector of the DA channel with the structured light illumination frequency vector in the reconstruction parameters of the DD channel image group; acquiring an initial phase and a modulation depth of the DA channel image group by using a complex linear regression algorithm containing empirical mode decomposition ...

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19-03-2014 дата публикации

Synthetic method of polyphenylene sulfide

Номер: CN103642042A
Принадлежит:

The invention relates to a synthetic method of polyphenylene sulfide. The synthetic method comprises the steps: adopting Na2S.xH2O and benzene dibromide as reaction monomers, adopting alpha-chloronaphthalene as a solvent, and using methylbenzene to carry out azeotropic water removal; respectively dissolving the two monomers into the solvent to carry out high-temperature polymerization after being purified, wherein sodium phosphate is used as a catalyst, the reaction time is 12-16 hours, and the reaction temperature is 280-290 DEG C; and repeatedly carrying out crude product purification by using an aqueous acetone solution and dichlorohexane with the volume ratio of 1:2. With the adoption of the synthetic method, the raw materials are easily obtained, the cost is low, the prepared polymer has excellent performance of high temperature resistance, i.e. the solid residual rate at the temperature of 600 DEG C is 65-75 percent.

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26-03-2014 дата публикации

Preparation method of phosphorus and nitrogen-containing liquid crystal copolyester material

Номер: CN103665359A
Принадлежит:

The invention relates to a preparation method of a phosphorus and nitrogen-containing liquid crystal copolyester material. The structural formula of the phosphorus and nitrogen-containing liquid crystal copolyester material is as shown in the specification. On the premise of maintaining the excellent thermal stability of wholly aromatic copolyester, the phosphorus and nitrogen-containing liquid crystal copolyester is easily dissolved in high-polarity organic solvents, so that the machining property of the material is enhanced. The phosphorus and nitrogen-containing liquid crystal copolyester has higher carbon residual rate at 600 DEG C, thereby providing new selection for mechanical high-temperature solid lubricating materials.

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25-03-2015 дата публикации

Epoxy resin semi-interpenetrating network sulfonated poly[(5-p-aminobenzene sulfonic acid)cyclotriphosphazene-ether ether ketone] proton exchange membrane material and preparation method thereof

Номер: CN104448695A
Принадлежит:

The invention relates to an epoxy resin semi-interpenetrating network sulfonated poly[(5-p-aminobenzene sulfonic acid)cyclotriphosphazene-ether ether ketone] proton exchange membrane material and a preparation method thereof. The proton exchange membrane material is formed by making cyclotriphosphazene derivative grafted-modified sulfonated poly(ether ether ketone) which serves as a linear chain penetrate through the crosslinked network which serves as a main body and is formed by epoxy resin, wherein the mass ratio of the cyclotriphosphazene derivative grafted-modified sulfonated poly(ether ether ketone) to the crosslinked network formed by epoxy resin is 1:(0.2-1.5). The proton exchange membrane material prepared by adopting the method has the characteristics of low production cost, high conductivity, good alcohol hindering performance and good heat resistance. The conductivity at a temperature of 20-90 DEG C of the proton exchange membrane material is 1.80*10<-3>-5.10*10<-1>S.cm<-1>, ...

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28-04-2023 дата публикации

Controllable seismic source fuel consumption control method and system based on frequency sweep instruction signal

Номер: CN116025474A
Принадлежит:

The invention relates to the technical field of automatic control, and provides a vibroseis fuel consumption control method and system based on a frequency sweep command signal, and the method comprises the steps: setting an initial value n0 of the rotating speed of an engine, and setting a low-fuel-consumption economic rotating speed value ne of the engine; obtaining the maximum theoretical required rotating speed n (t) of the engine according to the sweep frequency command signal s (t) and the physical characteristics of the vibroseis; according to the engine rotating speed initial value n0, the engine low-oil-consumption economic rotating speed value ne and the maximum theoretical required rotating speed n (t) of the engine, the engine high rotating speed set value nh is determined; and according to the high rotating speed set value nh of the engine, the low-oil-consumption economic rotating speed value ne of the engine and the maximum theoretical required rotating speed n (t) of the ...

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30-10-2020 дата публикации

Road surface cooling device for road

Номер: CN0211815939U
Принадлежит: LIANG YONGLIN

The utility model discloses a road surface cooling device for a road, which comprises a bottom plate, a driving cab and a cooling device, wheels which are controlled by the cab to support and drive the bottom plate to move are arranged below the bottom plate; the water storage tank is arranged on a bottom plate behind the cab; a drain pipe communicated with the water storage tank is arranged on one side surface, close to the tail end of the bottom plate, of the water storage tank; a plurality of high-pressure nozzles are uniformly arranged on the drainage pipe; the high-pressure spray head isarranged in a hollow ring shape; water spraying holes of the high-pressure spray heads are uniformly formed in the annular surface; the air storage chamber is positioned between the water storage tankand the bottom plate; an air pump is arranged in the air storage chamber; the air outlet end of the air pump is connected with the air inlet end of the breather pipe; the air outlet end of the breather ...

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26-05-2023 дата публикации

Electromagnetic guiding vibration isolation vibration device

Номер: CN116165696A
Принадлежит:

The embodiment of the invention provides an electromagnetic guiding vibration isolation vibration device. The electromagnetic guiding vibration isolation vibration device comprises a base; the guide piece is connected with the base and extends in the direction perpendicular to the base; the mass body is in sliding connection with the guide piece; the driving piece is arranged to be capable of driving the mass body to slide along the guide piece so as to drive the base to vibrate; and the magnetic assembly is used for providing magnetic acting force for the base so as to limit the moving range of the base in the vibration process. According to the electromagnetic guiding vibration isolation vibration device, the movement range of the base in the vibration process is limited through the magnetic acting force, and therefore the influence on the performance of the vibration device due to the fact that a physical structure is used for limiting movement of the base is avoided.

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09-09-2015 дата публикации

Proton exchange membrane material with semi-interpenetrating network formed by p-aminobenzene sulfonic acid graphene oxide doped SPEEK (sulfonated poly (ether ether ketone))/epoxy resin and preparation method of proton exchange membrane material

Номер: CN104893275A
Принадлежит:

The invention relates to a proton exchange membrane material with a semi-interpenetrating network formed by p-aminobenzene sulfonic acid graphene oxide doped SPEEK (sulfonated poly (ether ether ketone))/epoxy resin and a preparation method of the proton exchange membrane material. The proton exchange membrane material is structurally characterized in that the epoxy resin forms a cross-linked network structure, SPEEK is taken as a straight chain penetrating through the network, and the p-aminobenzene sulfonic acid graphene oxide serves as doping particles to be dispersed in the network. According to the proton exchange membrane material, SPEEK with higher degree of sulfonation is adopted as a base material, under the assistance of the cross-linking reaction of the epoxy resin, the defects of overhigh water absorption rate and poor composite membrane stability of SPEEK with overhigh degree of sulfonation are overcome, and certain mechanical strength and good methanol resistance of a composite ...

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25-03-2015 дата публикации

P-aminobenzene sulfonic acid graphene oxide grafted sulfonated polyetheretherketone proton exchange membrane material and preparation method thereof

Номер: CN104448771A
Принадлежит:

The invention relates to a p-aminobenzene sulfonic acid graphene oxide grafted sulfonated polyetheretherketone proton exchange membrane material. The proton exchange membrane material is characterized by being formed by penetrating p-aminobenzene sulfonic acid graphene oxide grafted-modified sulfonated polyetheretherketone serving as straight chains through epoxy resin cross-linked networks as a main body, wherein the mass ratio of epoxy resin to p-aminobenzene sulfonic acid graphene oxide grafted-modified sulfonated polyetheretherketone is (0.2-1.5): 1. The epoxy resin semi-interpenetrating network p-aminobenzene sulfonic acid graphene oxide grafted sulfonated polyetheretherketone proton exchange membrane material disclosed by the invention has the characteristics of low preparation cost, high electrical conductivity, good methanol diffusion resistance and good heat resistance. At 20 DEG C-90 DEG C, the electrical conductivity is 2.90*10<-3>-5.30*10<-1>S.cm<-1>, methanol-diffusion-resistant ...

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05-11-2014 дата публикации

Friction wear test machine for high-temperature in-situ polymerized solid lubricating film

Номер: CN104132858A
Принадлежит:

The invention relates to a friction wear test machine for a high-temperature in-situ polymerized solid lubricating film. The machine comprises an upper main shaft, a lower main shaft, and a high temperature furnace; an upper sample is fixed on the upper main shaft, a lower sample is fixed on the lower main shaft, and the upper sample and the lower sample contact with each other to form a friction contact surface, which is placed in the high temperature furnace. The high temperature furnace is provided with a gas inlet channel and a gas outlet channel for in and out of gas phase chemicals. A test load is applied on the top part of the upper main shaft, the lower main shaft is driven by a variable-frequency and variable-speed motor, and a pressure sensor is arranged on the upper main shaft. The test machine can measure important parameters of the solid lubricating film such as friction factor, bearing ability, and lubrication sustaining ability, and a preset solid lubricating film can also ...

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30-10-2020 дата публикации

Anti-cracking high-strength highway pavement

Номер: CN0211815258U
Принадлежит: LIU WEI

The utility model discloses an anti-crack high-strength highway pavement, which consists of a subbase layer, a base layer, a waterproof layer and a surface layer which are sequentially arranged abovea highway cushion layer from bottom to top, and comprises a first connecting layer, a second connecting layer, a third connecting layer and a fourth connecting layer, and the first connecting layer isarranged between the subbase layer and the highway cushion layer and between the base layer and the subbase layer; the first connecting layer is arranged to be a grid net formed by weaving steel cables in a transverse and longitudinal staggered mode, and connecting columns penetrating through connecting points and protruding out of the surfaces of the two sides of the grid net are arranged on theconnecting points of all grids of the grid net; the second connecting layers are arranged between the waterproof layer and the base layer and between the surface layer and the waterproof layer; the second ...

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21-05-2014 дата публикации

Hexaphenoxy cyclotriphosphazene-containing composite flame-retardant cable material and preparation method thereof

Номер: CN103804748A
Принадлежит:

The invention relates to a hexaphenoxy cyclotriphosphazene-containing composite flame-retardant cable material and a preparation method thereof. The cable material adopts exaphenoxy cyclotriphosphazene, magnesium hydroxide and aluminum hydroxide as fire retardants to improve the residual rate at a high temperature and improve the thermal stability and the flame retardant property of the cable material; the cable material has the characteristic of low smoke quantity, does not contain toxic substances such as lead, antimony and the like, and is green and environment-friendly; the exaphenoxy cyclotriphosphazene can reduce the filling amount of the magnesium hydroxide and the aluminum hydroxide, improve the flame retardant property of the material and increase the mechanical property of the materials; and the lubricating agent can improve the processability of the material; and therefore, the cable material is a novel high-efficiency flame-retardant cable material.

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06-06-2023 дата публикации

Advertisement delivery party determination method and device, equipment and storage medium

Номер: CN116228324A
Автор: BI CHENYANG, WANG JING
Принадлежит:

The invention provides an advertisement putting party determination method and device, equipment and a storage medium, and relates to the technical field of advertisement attribution, and the method comprises the steps: carrying out the priority division of the types of advertisement channels put to a user, and obtaining a priority sorting result; wherein the advertisement channel types comprise an advertisement putting type, a place pushing type and a marketing activity type; based on a priority ranking result, performing external channel attribution on the advertisement channels touched by the user to obtain the delivery types of the advertisement channels; and performing intra-channel media attribution on the advertisement channel touched by the user based on the delivery type of the advertisement channel to obtain a delivery owner of the advertisement channel. By constructing a set of universal and reasonable advertisement attribution system, accurate attribution of an advertiser during ...

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05-02-2014 дата публикации

Thermotropic liquid crystal multi-component copolyester and preparation method thereof

Номер: CN103554449A
Принадлежит:

The invention relates to a thermotropic liquid crystal multi-component copolyester and a preparation method thereof. A novel thermotropic liquid crystal copolyester is synthesized from terephthalic acid, 1,4-diacetoxyl phenylene and phenol propane which is prepolymerized with hydroquinone and 1,3-dibromopropane as monomers at normal temperature and normal pressure by using a two-step method. The prepared product is the thermotropic liquid crystal copolyester with high properties, and has properties of high operating temperature and excellent machining properties. According to a synthesis method, polymerization by using the two-step method at high temperature and normal pressure is adopted, and the yield and the polymerization degree of the product are improved through low-temperature prepolymerization control. The method is low in synthesis reaction cost, the property of the product is excellent, and the reaction condition is simple and controllable.

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30-05-2023 дата публикации

Vibrator

Номер: CN116174281A
Принадлежит:

The embodiment of the invention provides a vibrator. The vibrator comprises a base; the guide piece is connected with the base and extends in the direction perpendicular to the base; the mass body is in sliding connection with the guide piece; the driving piece is arranged to be capable of driving the mass body to slide along the guide piece so as to drive the base to vibrate; the elastic supporting piece is arranged between the base and the mass body to balance the mass of the mass body, the bottom of the mass body is sunken inwards to form a containing cavity, and at least part of the elastic supporting piece is located in the containing cavity. According to the vibrator, the working gravity center of the mass body is low, and the vibration performance of the vibrator can be effectively improved.

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23-04-2014 дата публикации

Imidazole ionic liquid doping-modified sulfonated polyphenylene sulfide proton exchange membrane material and preparation method thereof

Номер: CN103746133A
Принадлежит:

The invention relates to an imidazole ionic liquid doping-modified sulfonated polyphenylene sulfide proton exchange membrane material and a preparation method thereof. The proton exchange membrane comprises the following components by the mass percentage: 70% to 90% of SPPS (sulfonated polyphenylene sulfide) with the sulfonation degree of 57% to 80%; 0.1% to 5% of an imidazole ionic liquid; and 5% to 25% of a membrane-preparing solvent. The method comprises the steps: with the SPPS as a matrix and the imidazole ionic liquid as a filling phase, preparing a uniformly mixed membrane-preparing liquid, and drying by adopting a casting membrane forming method to obtain the composite membrane. The preparation method has low preparation cost and simple process; and the prepared proton exchange membrane has high electrical conductivity and good alcohol resistance; and the electrical conductivity at the temperature of 30 DEG C to 110 DEG C is 3.10*10<-3> S/cm to 3.50*10<-2> S/cm, the alcohol resistant ...

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09-09-2015 дата публикации

SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with epoxy resin interpenetrating polymer network and preparation method of SPEEK proton exchange membrane material

Номер: CN104893240A
Принадлежит:

The invention relates to an SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with an epoxy resin interpenetrating polymer network and a preparation method of the SPEEK proton exchange membrane material. The proton exchange membrane material is structurally characterized in that the epoxy resin forms a cross-linked network structure, and SPEEK is taken as a long chain penetrating through the network. According to the SPEEK proton exchange membrane material, SPEEK with higher degree of sulfonation is adopted as a base material, under the assistance of the cross-linking reaction of the epoxy resin, the defects of overhigh water absorption rate and poorer composite membrane stability of SPEEK with overhigh degree of sulfonation are overcome, certain mechanical strength and good methanol resistance of a composite membrane are guaranteed, and the dimensional stability and the water swelling resistance of the proton exchange membrane are improved.

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19-03-2014 дата публикации

Polyphosphazene derivative-doped modified sulfonated polyphenylene sulfide proton exchange film material and preparation method therefor

Номер: CN103642235A
Принадлежит:

The invention relates to a polyphosphazene derivative-doped modified sulfonated polyphenylene sulfide (SPPS) proton exchange film and a preparation method therefor. The ingredients of the proton exchange film are, by weight, 75%-90% of SPPS with a sulfonation degree of 57%-80%, 0.1%-20% of polyphosphazene derivatives, and 8%-20% of film preparation agents. In the method, SPPS is employed as a matrix, polyphosphazene derivatives are employed as a filling phase, and a film preparation solution mixed uniformly is prepared. A flow casting film forming method is employed and a composite film is prepared after drying. The cost is low, the technology is simple, and the prepared polyphosphazene derivative modified SPPS proton exchange film has high electrical conductivity and good methanol resistance. The electrical conductivity is 1.10*10<-2> S/cm-9.50*10<-2>S/cm at the temperature of 30 DEG C-110 DEG C, the methanol resistant coefficient reaches 1.12*10<-6>cm<2>/s-1.30*10<-7>cm<2>/s, and the ...

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04-07-2023 дата публикации

Charging pile regulation and control instruction determination method, system and equipment

Номер: CN116373676A
Принадлежит:

The invention provides a charging pile regulation and control instruction determination method, system and device. The method comprises the steps of obtaining a regulation and control target value of a charging pile cluster as a first regulation and control target value; obtaining the output capability of each charging pile under each aggregation unit in the charging pile cluster; distributing the first regulation and control target value to each aggregation unit to obtain a second regulation and control target value of each aggregation unit; and based on the second regulation and control target value of each aggregation unit and the output capability of each charging pile in the aggregation unit, obtaining a regulation and control instruction of each charging pile. The output capacity of the charging piles is evaluated, the online state of the charging piles is monitored, the charging pile cluster is divided into the aggregation units, the problems that a charging cluster regulation and ...

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03-06-2015 дата публикации

Method for preparing carbon microspheres through hydrothermal carbonization of biomass

Номер: CN104671229A
Принадлежит:

The invention discloses a method for preparing carbon microspheres through hydrothermal carbonization of a biomass. The method comprises the following steps: stirring and mixing camellia seed husk powder which serves as a raw material and deionized water, treating the mixture ultrasonically, transferring the treated mixture into a stainless steel reactor, introducing an inert gas into the stainless steel reactor to remove oxygen, putting the stainless steel reactor into an air blowing drying box, carrying out reaction at a constant temperature, cooling the product of reaction to room temperature, pouring out the upper-layer liquid, tanking out the solid, clearing the solid ultrasonically with deionized water and ethanol in sequence until the washing liquid is colorless, extracting with ultrasonic waves and microwaves in the solution of ethanol in water, filtering the mixture in vacuum, and drying in a vacuum drying box to obtain the carbon microspheres. The method disclosed by the invention ...

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