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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 18. Отображено 18.
15-07-2009 дата публикации

Method for catalytic synthesis of diacetyl ethylenediamine

Номер: CN0101481322A
Автор: ZHANG ZHAOFU, ZHOU XIAORUI, LU HONGWU, LI SHENGLI, HAN XIAOBING, ZHAOFU ZHANG, XIAORUI ZHOU, HONGWU LU, SHENGLI LI, XIAOBING HAN
Принадлежит:

The invention belongs to the technical field of a method for preparing amide-type compound in organic chemistry, in particular to a method for preparing diacetyl quadrol by catalytic synthesis, comprising the following steps: a. adding acetic acid, quadrol and catalytic amount of phosphoric acid in a reaction vessel with the amount of the phosphoric acid being 0.1-5% of total weight of the acetic acid and the quadrol; b. heating the mixture for reaction at the temperature of 120-210 DEG C; c. carrying out reduced pressure dehydration with the vacuum degree of -0.050Mpa to -0.098 Mpa; and d. cooling reaction liquid to obtain white block solid. By adopting the method, generation of a secondary reaction product of 2-methylimidazoline can be inhibited or noticeably reduced, so as to improve the purity and yield of the DAED product. The other improvement of the method is that by adopting the catalytic amount of phosphoric acid, reactant is not easily oxidized by oxygen in the air at high temperature ...

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Номер записи: 1
27-08-2014 дата публикации

Image super-resolution rebuilding method based on multiscale geometric analysis

Номер: CN104008539A
Автор: WANG XIAOFENG, ZHOU YANG, ZENG NENGLIANG, ZHOU DIDONG, HAN XIAO, ZHOU XIAORUI
Принадлежит:

The invention discloses an image super-resolution rebuilding method based on multiscale geometric analysis. The method includes the steps that (1) a low-resolution image is generated by means of a blurring model, (2) image registration is carried out, (3) image fusion is carried out, and (4) a rebuilt image is obtained. The method has good invariance for horizontal moving, rotation, size scaling, noise and the like, stability of affine transformation, view change and the like remains to a certain extent, and accordingly edge information keeps clear and relatively smooth; an algorithm is stable and has low calculation complexity and the method has wide application prospects in the fields of space target imaging, remote sensing imaging, medical imaging, tomographic imaging and the like.

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Номер записи: 2
27-08-2014 дата публикации

LSB replacement steganalysis method based on grey co-occurrence matrix statistic features

Номер: CN104008521A
Автор: WANG XIAOFENG, WEI CHENGCHENG, HAN XIAO, ZHOU XIAORUI, ZENG NENGLIANG
Принадлежит:

The invention discloses an LSB replacement steganalysis method based on grey co-occurrence matrix statistic features. The method includes the steps of image bit plane decomposition, grey co-occurrence matrix calculation, feature selection and extraction and classification. Firstly, a grey image is decomposed into eight bit planes, differential matrixes between the lowest bit plane and other seven bit planes are respectively calculated, then a sum matrix of the differential matrixes is calculated, a grey co-occurrence matrix of the sum matrix is generated, the obvious features are extracted and calculated by researching and analyzing the characteristics of the co-occurrence matrix, and a support vector machine is used as a classifier to distinguish carrier images and hidden images. According to the method, the number of feature dimensions is small, curse of dimensionality is effectively avoided, detection precision is high, an algorithm is stable, robustness of image processing of retaining ...

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Номер записи: 3
26-11-2014 дата публикации

Conformal transformation-based image Hash generation method and image tampering detection and positioning method

Номер: CN104166955A
Автор: WANG XIAOFENG, ZHANG LIXIN, ZHOU XIAORUI, ZENG NENGLIANG, HAN XIAO
Принадлежит:

The invention discloses a conformal transformation-based image Hash generation method, including the steps of: extracting features, generating an intermediate Hash, generating a secret key, encrypting, compressing data, and generating a final image Hash. The invention also discloses a method for detecting and positioning image tampering of an image Hash generated by the method. The method includes the steps of: processing received image Hash value H0 and Haffman tree HT0; generating an intermediate Hash of a test image; estimating geometric transformation; using globality of Hash to perform tampering detection; and using locality of Hash to perform tampering positioning. The method in the invention has robustness to geometric transformation; has sensitivity to malicious tampering attacks, and can detect fine texture change and color change attacks; and not only can detect whether image content is tampered, but can also determine the position of a tampered region.

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Номер записи: 4
15-10-2008 дата публикации

Manufacturing technique and method for refining petroleum aqueous emulsion

Номер: CN0101283682A
Автор: TAO SONGLEI, FU XIAOHANG, ZHOU XIAORUI, CHEN LIJUN, ZHANG LONGYUAN, LI ZHILIAN, SONGLEI TAO, XIAOHANG FU, XIAORUI ZHOU, LIJUN CHEN, LONGYUAN ZHANG, ZHILIAN LI
Принадлежит:

The invention relates to a production process of refined petroleum emulsion in water and belongs to the field of pesticide manufacturing process. The refined petroleum emulsion in water is made from refined petroleum, film-forming agent, emulsifiers, plant nutrients, defoaming agent, stabilizers, antifreezing agent and deionized water, by uniform dispersion using a high-speed shear mixing emulsifier. The refined petroleum emulsion is innoxious and non-irritant or low-toxic or low-irritant to animals and human beings, is harmless to crops, has environmental affinity, enhances the resistance of crops, and can promote the growth of crops. The refined petroleum emulsion can kill main insect pests, regulate the growth of crops, enhance resistance to cold and diseases and increase the yield of crops. The invention has the advantages of use of water as solvent, reduced waste of resources, no discharge of three wastes, environmental friendliness, scientific formulation, advanced process, low cost ...

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Номер записи: 5
09-05-2023 дата публикации

Safety early warning method and device, equipment and storage medium

Номер: CN116087969A
Автор: ZHOU XIAORUI
Принадлежит:

The invention relates to the technical field of wearable equipment, and discloses a safety early warning method, device and equipment and a storage medium, and the method comprises the steps: controlling infrared sensing equipment to emit an infrared signal when a wrist lifting behavior of a user is detected, and obtaining a propagation parameter of the infrared signal; determining a current distance between the user and an object in front of the user according to the propagation parameters; determining the moving speed of an object in front of the user according to the propagation parameters and the infrared signal emission frequency of the infrared sensing equipment; when the current distance is smaller than a preset distance threshold value and the moving speed of the object in front of the user is larger than a preset speed threshold value, safety early warning information is sent out; through the mode, whether the front of the user is dangerous is judged according to the current distance ...

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Номер записи: 6
06-06-2023 дата публикации

Modeling method and device based on data type

Номер: CN116226741A
Автор: ZHOU XIAORUI, ZHUO ZHENGXING, YANG QING
Принадлежит:

The invention aims to provide a method and a device for modeling based on data types. The method comprises the following steps: analyzing a credit report of a user to obtain corresponding credit data; classifying the credit investigation data according to a plurality of preset data types; and based on the classified credit investigation data corresponding to the different data types, a neural network model is constructed and trained, and the model comprises a plurality of sub-models suitable for the different data types respectively. The embodiment of the invention has the following advantages: the complexity of credit report variable management is reduced by classifying the credit data according to a plurality of preset data types and modeling each item of data under each field of the credit report according to the plurality of preset data types; and if iteration upgrading of a subsequent model needs to be carried out, all the same type of data can take effect only by modifying the neural ...

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Номер записи: 7
30-09-2015 дата публикации

Video copy tamper detection method resisting geometric attacks

Номер: CN104954807A
Автор: WANG XIAOFENG, ZHOU XIAORUI, XU BINGCHAO, XI JIANGHUAN, WANG JIAO
Принадлежит:

The invention discloses a video copy tamper detection method resisting geometric attacks. The method comprises the following steps: step 1, candidate video copy fragments are detected; step 2, the candidate video copy fragments are merged; step 3, the copied video fragments are detected. According to the method, copy frames in videos can be detected accurately, better robustness is realized for geometric transformation such as video rotation, zoom and the like, good timeliness is provided, and the problems about accuracy and timeliness of video copy tamper detection in the prior art are solved.

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Номер записи: 8
09-06-2023 дата публикации

Multi-element soil improvement type water-soluble fertilizer and preparation method thereof

Номер: CN116239425A
Автор: WAN JIANBING, YANG CHENGCAI, WANG WEIJUN, ZHOU ZIHE, ZHOU XIAORUI
Принадлежит:

The invention discloses a multi-element soil improvement type water-soluble fertilizer which is specifically prepared from the following raw materials in parts by weight: 10-25 parts of attapulgite, 40-80 parts of animal blood fermentation enzymatic hydrolysate, 3-5 parts of EDTA (Ethylene Diamine Tetraacetic Acid), 5-20 parts of humic acid, 5-10 parts of urea and 5-25 parts of monopotassium phosphate, and also discloses a preparation method of the multi-element soil improvement type water-soluble fertilizer. The invention belongs to the technical field of fertilizers, and particularly provides a multi-element soil improvement type water-soluble fertilizer and a preparation method thereof.According to the method, attapulgite serving as a functional material is organically combined with fermentation enzymatic hydrolysate obtained by resourceful treatment of livestock and poultry blood in a slaughter house by means of natural endowment characteristics, so that the water-soluble fertilizer ...

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Номер записи: 9
23-06-2023 дата публикации

Fluorocarbon surfactant intermediate and preparation method thereof

Номер: CN116283572A
Автор: ZHANG XINHUI, TAO YANG, ZHOU XIAORUI, LI ZHIBIN, WU JIAJING, SHI LEI, DONG LIMING
Принадлежит:

The invention relates to the technical field of organic chemistry, and particularly discloses a fluorocarbon surfactant intermediate and a preparation method thereof.According to the preparation method of the fluorocarbon surfactant intermediate, perfluoroepoxide serves as a starting raw material, and under the condition that a fluorine source and a solvent are added, the perfluoroepoxide is reacted to obtain the fluorocarbon surfactant intermediate. And reacting with halogenated carboxylic ester to obtain a fluorocarbon surfactant intermediate. The preparation method provided by the invention belongs to one-pot reaction, and has the advantages of simple process operation, short reaction course, recoverable reaction solvent and less amount of three wastes. The fluorocarbon surfactant intermediate prepared by the method belongs to a hydrofluoroether class compound, and the fluorocarbon surfactant obtained by further derivatization of the fluorocarbon surfactant intermediate also belongs ...

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Номер записи: 10
26-05-2023 дата публикации

Hexafluoropropylene tripolymer epoxide with specific structure and preparation method of hexafluoropropylene tripolymer epoxide

Номер: CN116162072A
Автор: ZHANG XINHUI, TAO YANG, ZHOU XIAORUI, HAN WENFENG, LI ZHIBIN, WU JIAJING, SHI LEI, DONG LIMING
Принадлежит:

The invention relates to the technical field of organic chemistry, and particularly discloses a hexafluoropropylene tripolymer epoxide with a specific structure and a preparation method of the hexafluoropropylene tripolymer epoxide. The invention discloses a preparation method of a hexafluoropropylene tripolymer epoxide with a specific structure, which comprises the following steps: isomerization reaction: taking a hexafluoropropylene tripolymer as a raw material, and obtaining the hexafluoropropylene tripolymer of which the main component T3 structure content is higher than 85% in the presence of a solvent, a fluorine source, a catalyst and a two-phase cosolvent; epoxidation reaction: carrying out epoxidation reaction on the hexafluoropropylene tripolymer with the main component T3 structure content higher than 85% to obtain a crude product; and purifying the crude product to obtain the hexafluoropropylene tripolymer epoxide with the specific structure. By utilizing the preparation method ...

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Номер записи: 11
29-06-2011 дата публикации

Manufacturing technique and method for refining petroleum aqueous emulsion

Номер: CN0101283682B
Автор: FU XIAOHANG, TAO SONGLEI, ZHOU XIAORUI, CHEN LIJUN, ZHANG LONGYUAN, LI ZHILIAN, XIAOHANG FU, SONGLEI TAO, XIAORUI ZHOU, LIJUN CHEN, LONGYUAN ZHANG, ZHILIAN LI
Принадлежит:

The invention relates to a production process of refined petroleum emulsion in water and belongs to the field of pesticide manufacturing process. The refined petroleum emulsion in water is made from refined petroleum, film-forming agent, emulsifiers, plant nutrients, defoaming agent, stabilizers, antifreezing agent and deionized water, by uniform dispersion using a high-speed shear mixing emulsifier. The refined petroleum emulsion is innoxious and non-irritant or low-toxic or low-irritant to animals and human beings, is harmless to crops, has environmental affinity, enhances the resistance ofcrops, and can promote the growth of crops. The refined petroleum emulsion can kill main insect pests, regulate the growth of crops, enhance resistance to cold and diseases and increase the yield of crops. The invention has the advantages of use of water as solvent, reduced waste of resources, no discharge of three wastes, environmental friendliness, scientific formulation, advanced process, low cost ...

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Номер записи: 12
16-12-2015 дата публикации

Detecting device and reactor core formation of image monitoring facilities

Номер: CN0204884584U
Автор: LIU YUANYUAN, YUE HUIGUO, ZHOU XIAORUI, LIN QUANYI, LI WENTING
Принадлежит:

The utility model provides a detecting device and reactor core formation of image monitoring facilities. Detecting device includes upper and lower two sets of detector, a serial communication port, at least a set of detector in two sets of detectors includes first detector and second detector, first detector includes four rectangle regions of 2X2, four regional the detection unit that correspond of rectangle are fixed, the second detector has two fixed the detection unit in the regional position of two rectangles of the diagonal angle corresponding to first detector, position in one of two rectangles regions at another diagonal angle corresponding to first detector has a portable the detection unit. According to the technical scheme of the utility model can reduce about 13% detector cost at most when guaranteeing equal image quality.

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Номер записи: 13
22-04-2015 дата публикации

Method for preparing 1,1,1,4,4,4-hexafluoro-2-butene

Номер: CN104529695A
Автор: ZHOU XIAORUI, ZHANG YUANZHONG, LOU YUEYING
Принадлежит:

The invention discloses a method for preparing 1,1,1,4,4,4-hexafluoro-2-butene, which comprises the following steps: mixing CHmXnY[4-n-m] (m is 0 or 1, n is 1, 2 or 3, and X and Y are selected from F, Cl or Br.) and HCFO-1233zd (CHCl=CHCF3) to perform thermal addition reaction; carrying out gas-phase thermal cracking on the intermediate product hydrofluorochloro(bromo) butane to remove HCl, or carrying out HF fluoridation by using a fluoridation catalyst, or dechlorinating by using zinc powder; and filtering the reaction product, washing with alkali, washing with water, drying, compressing, and carrying out rectifying purification to obtain the high-purity 1,1,1,4,4,4-hexafluoro-2-butene product. The method has the advantages of simple technique and accessible raw materials, can easily implement industrialization, and is green and environment-friendly.

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Номер записи: 14
14-05-2014 дата публикации

Preparation process of perfluoro-2-methyl-3-pentanone

Номер: CN103787854A
Автор: CHONG YUEN THUB, ZHOU XIAORUI, ZHANG ZHAOFU, LU DI, TAO YANG
Принадлежит:

The invention discloses a preparation process of perfluoro-2-methyl-3-pentanone, belonging to the technical field of preparation methods of perfluoroketone compounds in the field of organofluorine chemistry. The perfluoro-2-methyl-3-pentanone is obtained by performing an epoxidation reaction and a catalytic isomerization reaction on perfluoro-2-methyl-pentene serving as a raw material in sequence. The preparation process comprises the following steps: I, in a continuous liquid phase epoxidation reaction, mixing a corresponding proportion of aprotic polar solvent into a sodium hypochlorite solution to promote the reaction, increase the raw material conversion ratio and increase the reaction rate at least by 2-3 percent, wherein the step is characterized by easiness and convenience in operation, low equipment requirement and high reaction equipment efficiency; II, performing a continuous gas phase catalytic reaction, wherein the application of a solvent is effectively avoided, the cost and ...

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Номер записи: 15
01-08-2023 дата публикации

Multi-element composite soil conditioner and preparation method thereof

Номер: CN116514604A
Автор: WAN JIANBING, YANG CHENGCAI, ZHOU ZIHE, ZHOU XIAORUI
Принадлежит:

The invention discloses a multi-element composite soil conditioner which comprises 20-80 parts of attapulgite powder, 40-80 parts of slaughter house livestock and poultry blood adsorption sediment and edible fungus residue fermentation decomposed matter, 5-20 parts of potassium fulvate and 0.1-2 parts of a microbial agent, and meanwhile, the invention further discloses a preparation method of the multi-element composite soil conditioner. The invention belongs to the technical field of soil conditioners, and particularly provides a multi-element composite soil conditioner and a preparation method thereof, attapulgite is used as a base material of the soil conditioner by using the unique physicochemical characteristics of the attapulgite, and meanwhile, livestock and poultry blood inversely controlled in a red working section of a slaughter house is subjected to resource utilization; the two components are organically combined to provide the soil conditioner for improving the acid soil; the ...

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Номер записи: 16
23-06-2023 дата публикации

Credit risk control model training method and device based on knowledge distillation, electronic equipment and computer medium

Номер: CN116308757A
Автор: ZHOU XIAORUI, ZHUO ZHENGXING, YANG QING
Принадлежит:

The invention provides a credit risk control model training method and device based on knowledge distillation, electronic equipment and a computer medium, and the method comprises the steps: obtaining credit sample data which comprises a first credit feature and a risk attribute of a credit user; extracting a probability risk value of the application user according to a teacher model and a second credit feature of the application user; based on the probability risk value and the second credit feature, adopting a first cross entropy loss function to pre-train a knowledge distillation model to obtain a student model; and performing optimization training on the student model according to the first credit feature and the risk attribute to obtain a target risk control model, thereby fully utilizing the first credit feature and the second credit feature of each user, overcoming the problem that training is only performed on the credit user, not only improving the data use efficiency, but also ...

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Номер записи: 17
23-06-2023 дата публикации

Perfluorononyl trifluoroethyl ether as well as preparation method and application thereof

Номер: CN116283511A
Автор: LI ZHIBIN, DONG LIMING, TAO YANG, ZHOU XIAORUI, HAN WENFENG, ZHANG XINHUI, WU JIAJING, SHI LEI
Принадлежит:

The invention discloses perfluorononyl trifluoroethyl ether and a preparation method and application thereof.The preparation method of the perfluorononyl trifluoroethyl ether comprises the steps that hexafluoropropylene tripolymer and trifluoroethanol serve as raw materials, vaporization treatment is conducted on the raw materials, hexafluoropropylene tripolymer gas and trifluoroethanol gas are obtained, the hexafluoropropylene tripolymer gas and the trifluoroethanol gas are mixed, and the perfluorononyl trifluoroethyl ether is obtained. Carrying out addition reaction under a catalytic condition to obtain mixed gas; and introducing the mixed gas into an alkaline solution, cooling, separating the liquid, and taking the lower-layer liquid to obtain a crude product of perfluorononyl trifluoroethyl ether. The perfluorononyl trifluoroethyl ether has the advantages that the preparation process of the perfluorononyl trifluoroethyl ether is simple, the reaction speed is high, the reaction selectivity ...

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Номер записи: 18