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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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Применить Всего найдено 10. Отображено 10.
19-05-2010 дата публикации

Method for synthesizing D-arylglycine by using heterogeneous enzyme to catalytically hydrolyzing 5-arylhydantoin

Номер: CN0101104862B
Автор: WENKE DING, JUNZHANG LI, XIA TIAN, SHOUXIN LIU, XIAOLI ZHEN, ZHENCHAO LI, ZHIHUI ZHOU, DING WENKE, LI JUNZHANG, TIAN XIA, LIU SHOUXIN, ZHEN XIAOLI, LI ZHENCHAO, ZHOU ZHIHUI
Принадлежит:

The invention relates to a chemical pharmaceutical field, in particular to an approach on synthesis of D-aryl glycine by heterogeneous enzyme catalytic hydrolysis of 5-aryl hydantoin. The invention takes an enzyme preparation fermented by a mutant bacteria UV-LZ98 of a hydantoin producing strain Arthrobacter aurescens LZ-98 and a mutant bacteria UV-LZ99 of an ammonia methyl amidohydrolase producing strain Agrobacterium radiobacter LZ99 as a catalyst, and has a heterogeneous catalytic reaction with an input of more than three to ten times of 5-aryl hydantoin than homogeneous reaction to make the D-aryl glycine produced precipitate directly in a solid way during the substrate hydrolysis process, which improves the synthesis efficiency and lowers the evaporation energy consumption with a stable quality.

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Номер записи: 1
28-09-2011 дата публикации

Biological resolution method for amino acid

Номер: CN0101186944B
Автор: JI DEBIN, HU SUKUN, DING WENKE, LIU SHOUXIN, ZHEN XIAOLI, KANG HUAIPING, DEBIN JI, SUKUN HU, WENKE DING, SHOUXIN LIU, XIAOLI ZHEN, HUAIPING KANG
Принадлежит:

The present invention relates to the field of biochemical engineering, in particular to a novel process for preparing L-amino acid and D-amino acid by direct biocatalysis and hydrolysis resolution for DL-N-acetyl amino acid esters. DL-N-acetyl amino acid esters is used as substrate, enzyme including amide hydrolase and ester hydrolase is used as catalyst, wherein the enzyme is achieved by fermenting aspergillus oryzae Lb3085, de-ionized water is utilized as solvent and added in an enzyme catalysis reactor, and L-N-acetyl amino acid esters of the substrate is hydrolyzed into L-amino acid, D-N-acetyl amino acid esters of the substrate is hydrolyzed into D-N-acetyl amino acid, thereby resolution is realized. The resolution technique of 'one bacterium two enzymes' can efficiently reduce operating intermediate process, and achieve purposes of convenience and cleaning.

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Номер записи: 2
29-08-2012 дата публикации

Bromine-containing pentaerythritol phosphoester retardant and preparation method thereof

Номер: CN0101921407B
Автор: ZHIHAN PENG, WENKE DING, YI ZHOU, HUAPING WANG, PENG ZHIHAN, DING WENKE, ZHOU YI, WANG HUAPING
Принадлежит:

The invention relates to a bromine-containing pentaerythritol phosphoester fire retardant and a preparation method thereof. The bromine-containing pentaerythritol phosphoester fire retardant is pentaerythritol double-spiro phosphoryl double-tribromo neopentyl alcohol ester. The preparation method of the novel bromine-containing pentaerythritol phosphoester comprises the following steps of: 1, reacting pentaerythritol with phosphorus oxychloride to generate an intermediate pentaerythritol double-spiro double-phosphorus oxychloride; and 2, reacting the pentaerythritol double-spiro phosphorus oxychloride with tribromo neopentyl alcohol to generate the pentaerythritol double-spiro phosphoryl double-tribromo neopentyl alcohol ester, wherein in the reaction, quaternary ammonium salt cation ionic liquid serves as a solvent and a catalyst. The invention discloses a new synthesis method of the bromine-containing pentaerythritol phosphoester fire retardant. The ionic liquid serves as the solvent, ...

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Номер записи: 3
28-05-2008 дата публикации

Biological resolution method for amino acid

Номер: CN0101186944A
Автор: LIU SHOUXIN, ZHEN XIAOLI, JI DEBIN, KANG HUAIPING, HU SUKUN, DING WENKE, SHOUXIN LIU, XIAOLI ZHEN, DEBIN JI, HUAIPING KANG, SUKUN HU, WENKE DING
Принадлежит:

The invention relates to the field of biochemical engineering, in particular to a novel process for preparing L-amino acid and D-amino acid by direct biocatalysis and hydrolysis resolution for DL-N-acetyl amino acid esters. DL-N-acetyl amino acid esters is used as substrate, enzyme including amide hydrolase and ester hydrolase is used as catalyst, wherein the enzyme is achieved by fermenting aspergillus oryzae Lb3085, de-ionized water is utilized as solvent and added in an enzyme catalysis reactor, and L-N-acetyl amino acid esters of the substrate is hydrolyzed into L-amino acid, D-N-acetyl amino acid esters of the substrate is hydrolyzed into D-N-acetyl amino acid, thereby resolution is realized. The resolution technique of 'one bacterium two enzymes' can efficiently reduce operating intermediate process, and achieve purposes of convenience and cleaning.

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Номер записи: 4
16-01-2008 дата публикации

Method for synthesizing D-arylglycine by using heterogeneous enzyme to catalytically hydrolyzing 5-arylhydantoin

Номер: CN0101104862A
Автор: SHOUXIN LIU, XIAOLI ZHEN, XIA TIAN, ZHENCHAO LI, JUNZHANG LI, ZHIHUI ZHOU, WENKE DING, LIU SHOUXIN, ZHEN XIAOLI, TIAN XIA, LI ZHENCHAO, LI JUNZHANG, ZHOU ZHIHUI, DING WENKE
Принадлежит:

The invention relates to a chemical pharmaceutical field, in particular to an approach on synthesis of D-aryl glycine by heterogeneous enzyme catalytic hydrolysis of 5-aryl hydantoin. The invention takes an enzyme preparation fermented by a mutant bacteria UV-LZ98 of a hydantoin producing strain Arthrobacter aurescens LZ-98 and a mutant bacteria UV-LZ99 of an ammonia methyl amidohydrolase producing strain Agrobacterium radiobacter LZ99 as a catalyst, and has a heterogeneous catalytic reaction with an input of more than three to ten times of 5-aryl hydantoin than homogeneous reaction to make the D-aryl glycine produced precipitate directly in a solid way during the substrate hydrolysis process, which improves the synthesis efficiency and lowers the evaporation energy consumption with a stable quality.

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Номер записи: 5
26-08-2015 дата публикации

Adjustable symmetric swing plate type wave energy generation device

Номер: CN104863786A
Автор: CHEN CHENGJUN, DING WENKE, LIU PENG
Принадлежит:

The invention provides an adjustable symmetric swing plate type wave energy generation device which comprises anchor chains, a floating body, a sliding table, a first swing plate, a first hydraulic cylinder, a second hydraulic cylinder, a second swing plate, a third swing plate, a third hydraulic cylinder, a fourth hydraulic cylinder, a first rectifying valve group, a first electromagnetic valve, a second rectifying valve group, a second electromagnetic valve, a third electromagnetic valve, a hydraulic motor, a generator and a rectifying filter circuit. The adjustable symmetric swing plate type wave energy generation device has the advantages that through hydraulic pressure, the interval between the front and rear swing plates can be automatically adjusted to be half a wavelength, so that the stability and power generation efficiency of the adjustable symmetric swing plate type wave energy generation device can be greatly improved.

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Номер записи: 6
09-05-2023 дата публикации

Intelligent contract vulnerability detection method and device based on syntax and semantic feature fusion

Номер: CN116089957A
Автор: HAN DAOJUN, LI QIUYUE, ZHANG LEI, XU TAO, JIA PEIYAN, SHEN YATIAN, DING WENKE, XIAO QI, LI YUNSONG, WANG ZEMIN, WANG YAOQI, WANG ZAICHAO
Принадлежит:

The invention discloses an intelligent contract vulnerability detection method and device based on grammar and semantic feature fusion, and the method comprises the steps: collecting a data set, carrying out the data preprocessing, obtaining an Ethereum intelligent contract, and carrying out the balance training of the data set through a weighted random sampling method; secondly, converting the source code of the intelligent contract into an abstract syntax tree and a control flow graph through a third-party software package py-solc-x and evmcfgbuild in Python, and extracting syntax features and semantic features of the contract from the abstract syntax tree and the control flow graph by using a convolutional neural network and a graph neural network; and finally, splicing the grammar features and the semantic features to obtain a grammar and semantic feature fusion vector, and performing vulnerability detection on the smart contract by using the fusion vector. The grammar and semantic ...

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Номер записи: 7
27-08-2014 дата публикации

Color image encryption method based on SHA-384 function, spatiotemporal chaotic system, quantum chaotic system and neural network

Номер: CN104008520A
Автор: CHAI XIULI, SHI CHUNXIAO, DING WENKE, GAN ZHIHUA, WANG JUN, CHENG YUNLONG
Принадлежит:

The invention relates to a color image encryption method based on an SHA-384 function, a spatiotemporal chaotic system, a quantum chaotic system and a neural network. The method includes the steps that an original color image I0 is calculated through the SHA-384 function, a Hash value is obtained as a secret key, the Hash value, a CML and one-dimension Logistic chaotic mapping are utilized for generating a chaos sequence, bit-level line-column scrambling is carried out on high four-digit images of components of three primary colors of the I0 through the chaos sequence, and a scrambled image I1 is obtained; the Logistic quantum chaotic system is utilized for generating a chaos sequence for encrypting the scrambled image, and is combined with the neural network to carry out parallel diffusion processing on all pixel values of components of three primary colors of the I1, and a final encrypted image I2 is obtained. By the method, the space of the secret key is greatly enlarged, the safety, ...

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Номер записи: 8
04-08-2010 дата публикации

Novel polyester chain extender and preparation method thereof

Номер: CN0101792523A
Автор: DAZHONG CHEN, XIANGLING CHEN, WENKE DING, WEILI HU, WEIFENG HUANG, HANXIONG JIANG, WENGANG LI, YI LI, ZHE LI, LEI PAN, CHAOSHENG WANG, JIONG WANG, QI WANG, ZHANG JUN, LI ZHANG, WANJIN ZHAO, CHEN DAZHONG, CHEN XIANGLING, DING WENKE, HU WEILI, HUANG WEIFENG, JIANG HANXIONG, LI WENGANG, LI YI, LI ZHE, PAN LEI, WANG CHAOSHENG, WANG JIONG, WANG QI, ZHANG LI, ZHAO WANJIN
Принадлежит:

The invention relates to a novel polyester chain extender and a preparation method thereof. The related novel polyester chain extender can obviously improve the intrinsic viscosity of the polyester and can reduce carboxyl content in the system. The novel polyester chain extender respectively comprises o-(4,4-dimethyl oxazoline) and a butanimide structure at the ortho position of the benzene ring, wherein the imide structure can react with hydroxide radical in the polyester and can obviously improve the intrinsic viscosity of the polyester; and oxazoline can perform the chain extending reaction with carboxyl in the polyester and can reduce the carboxyl content in the system when improving the viscosity. The preparation method for the novel polyester chain extender comprises the following steps: (a) dissolving isatoic anhydride and 2-alkamine in chlorobenzene and adding a catalyst into the mixture to perform a reaction to prepare oxazoline aniline; (b) dissolving the prepared oxazoline aniline ...

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Номер записи: 9
22-12-2010 дата публикации

Bromine-containing pentaerythritol phosphoester retardant and preparation method thereof

Номер: CN0101921407A
Автор: ZHIHAN PENG, WENKE DING, YI ZHOU, HUAPING WANG, PENG ZHIHAN, DING WENKE, ZHOU YI, WANG HUAPING
Принадлежит:

The invention relates to a bromine-containing pentaerythritol phosphoester fire retardant and a preparation method thereof. The bromine-containing pentaerythritol phosphoester fire retardant is pentaerythritol double-spiro phosphoryl double-tribromo neopentyl alcohol ester. The preparation method of the novel bromine-containing pentaerythritol phosphoester comprises the following steps of: 1, reacting pentaerythritol with phosphorus oxychloride to generate an intermediate pentaerythritol double-spiro double-phosphorus oxychloride; and 2, reacting the pentaerythritol double-spiro phosphorus oxychloride with tribromo neopentyl alcohol to generate the pentaerythritol double-spiro phosphoryl double-tribromo neopentyl alcohol ester, wherein in the reaction, quaternary ammonium salt cation ionic liquid serves as a solvent and a catalyst. The invention discloses a new synthesis method of the bromine-containing pentaerythritol phosphoester fire retardant. The ionic liquid serves as the solvent, ...

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Номер записи: 10