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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 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 6. Отображено 6.
11-04-2023 дата публикации

Coding gene of alkali-resistant levan synthetase for high-yield levan

Номер: CN115948433A
Автор: AN YINGFENG, GAO SONG, KAN GUOSHI, CHEN HONGMAN, KO HA-SEO, LIANG YAOKUN, YANG SHUAI, WANG RUI, WANG YITING, TENG ZHENGRONG
Принадлежит:

The invention relates to the field of enzyme engineering, in particular to a coding gene of alkali-resistant levan synthetase with high yield of levan. Existing levan synthetase has the problem of low activity and particularly has poor catalytic efficiency under special conditions such as strong base and the like, so that the application range of the enzyme is influenced. The invention provides a levan synthetase gene which can be efficiently expressed in escherichia coli, and the levan synthetase gene not only has high activity and high substrate conversion rate, but also has relatively high tolerance to strong alkalinity, and shows good production and application prospects.

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Номер записи: 1
21-07-2023 дата публикации

Continuous preparation device and method of binary conductive polymer composite nanofiber

Номер: CN116463743A
Автор: LIANG BANGLEI, ZHAO YAQI, ZHAO ZHENXIN, FENG QIAO, DU LINGZHI, LIANG YAOKUN, ZHU YUANZHAO, LIU YAO, ZHANG KUANGBIN, MA SHUCAI, FAN JIAMENG
Принадлежит:

The invention provides a continuous preparation device and method for binary conductive polymer composite nanofibers, which comprises the following steps: respectively injecting an aniline monomer solution and an initiator solution containing a dopant, and a thiophene monomer solution and an initiator solution containing a dopant into corresponding containers, and reacting under the action of gravity to prepare the binary conductive polymer composite nanofibers. An aniline monomer solution and an initiator solution thereof flow into the main pipeline through the branch pipeline and are subjected to mixing and flow polymerization to generate polyaniline nanofibers, then the polyaniline nanofibers continue to flow in the main pipeline and are mixed with a thiophene solution and an initiator solution thereof, and thiophene is subjected to in-situ chemical oxidation polymerization on the surfaces of the polyaniline nanofibers; the polyaniline/polythiophene composite nanofibers are generated ...

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Номер записи: 2
26-05-2023 дата публикации

Fructosyl transferase and coding gene thereof

Номер: CN116162611A
Автор: AN YINGFENG, LIU XIA, GAO SONG, KAN GUOSHI, CHEN HONGMAN, KO HA-SEO, LIANG YAOKUN, YANG SHUAI, WANG RUI, WANG YITING, TENG ZHENGRONG
Принадлежит:

The invention relates to the field of enzyme engineering, in particular to fructosyl transferase and a coding gene thereof, and the fructosyl transferase has very high tolerance to high temperature, strong acid, strong alkali and organic solvents, and catalyzes synanthrin to generate fructoside III. The existing represented fructosyl transferase has a small quantity and low activity, and has low activity and even complete inactivation in special environments with high temperature, strong acid, strong base, organic solvents and the like, so that the application range of the enzyme is influenced. The invention provides a fructosyl transferase gene which can be efficiently expressed in escherichia coli, and the fructosyl transferase gene not only has high activity, but also has higher tolerance to high temperature, strong acid, strong alkali and organic solvents, and shows good production and application prospects.

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Номер записи: 3
18-04-2023 дата публикации

Channel impulse noise estimation method based on variational Bayesian learning

Номер: CN115987721A
Автор: YU HUA, MA HAONAN, LIANG YAOKUN, WANG QISEN
Принадлежит:

The invention discloses a channel impulse noise estimation method based on variational Bayesian learning. According to the estimation method, joint estimation is carried out on impulse response of a channel and impulse noise and Gaussian noise existing in the environment in a time domain; and carrying out time domain equalization on the signal according to the channel impulse response to obtain an expected signal. On the basis of a received data model introducing impulse noise, likelihood function expectations of received data of forward and backward EM algorithms of the model are derived, and an update formula of hidden variables of the model is derived on the basis of the expectations. And the forward channel impulse response, the forward impulse noise, the backward channel impulse response and the backward impulse noise are accurately estimated. Compared with a traditional Bayesian channel estimation method, the method can accurately estimate impulse noise and channel impulse response ...

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Номер записи: 4
02-06-2023 дата публикации

Afforestation method for sandy coast difficult site

Номер: CN116195480A
Автор: WEI SHENGMIN, LI JIAQIAN, LI JUNFEN, XU ZHU, LIANG YAOKUN, YU HUPING, SONG JIANG, LAI WEILIN, ZHOU XIAOYAN, LI ZHENBIN, LIU LIJIA, HUANG HUANGTONG, WEI MOUJUN
Принадлежит:

The invention discloses an afforestation method for a sandy coast difficult site. The afforestation method comprises the following five steps. According to the method, the sandy soil is subjected to soil turning and rectification, meanwhile, a mixture of gravel blocks and soil is laid on the sandy soil, a water retention layer is arranged on the gravel layer, a vegetation water retention layer is formed by mixing a water retention agent and soil, before planting, soil preparation is conducted on the selected afforestation land in a depth horizontal ditch soil preparation mode, field planting marks are arranged on horizontal ditches, and then planting is conducted on the afforestation land; a soil conditioner is laid on the upper portion of the vegetation water retention layer, meanwhile, dead leaves, straw, sawdust and other natural fertilizers prone to corrosion are laid on the surface of the vegetation water retention layer, a soil sample of the soil is cultured, meanwhile, wet bryophytes ...

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Номер записи: 5
28-07-2023 дата публикации

Preparation device and method of nylon/polyaniline/polypyrrole composite fiber

Номер: CN116497540A
Автор: LIANG BANGLEI, ZHAO YAQI, ZHAO ZHENXIN, FENG QIAO, DU LINGZHI, LIANG YAOKUN, LIU YAO, ZHANG KUANGBIN, MA SHUCAI, FAN JIAMENG, LI XU
Принадлежит:

The invention provides a device and a method for preparing nylon/polyaniline/polypyrrole composite fibers. The device comprises a pretreatment device, an aniline polymerization device, a pyrrole polymerization device and a post-treatment device. An aniline monomer input device and an initiator device are arranged at the initial end of the aniline polymerization device, a pyrrole monomer input device and an initiator device are arranged at the initial end of the pyrrole polymerization device, and nylon fibers are subjected to impurity removal, aniline surface polymerization, pyrrole surface polymerization, cleaning and drying under the action of the traction device. And collecting by a collecting device to obtain the nylon/polyaniline/polypyrrole composite fiber. Reaction liquid is mixed through the guide pipe by means of gravity, a mixing device is not needed, continuous traction of the nylon fiber is beneficial to further uniform mixing of the reaction liquid, and polyaniline and polypyrrole ...

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Номер записи: 6