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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 7. Отображено 7.
22-08-2023 дата публикации

Motion motion correction method and system, electronic equipment and medium

Номер: CN116631054A
Автор: LI XUE, WEI HONGLEI, GAO ZHANLE, JIN YU, WANG JUNWEI, SHEN HAO, YAO LI, WEI CHANGLING
Принадлежит:

The invention belongs to the technical field of human body motion detection, and aims to provide a motion motion correction method and system, electronic equipment and a medium. According to the motion recognition method and device, motion category recognition of the motion video frames is achieved by obtaining the mixed feature information of each motion video frame, the accuracy of motion recognition can be improved, in addition, motion interception operation is carried out on the multiple motion video frames to obtain multiple video frame combinations, and the motion recognition accuracy is improved. According to the method and the device, different action standards are identified according to the standard action videos corresponding to the different video frame combinations, and action comparison of the video frame combinations is realized, so that the situation that the motion actions cannot be effectively identified due to the fact that the motion videos are too long can be avoided ...

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Номер записи: 1
02-06-2023 дата публикации

Water flow evolution analysis method and device considering dry-wet boundary, equipment and medium

Номер: CN116205156A
Автор: JIANG XIANGANG, WANG JUNWEI, WU XIAOKUN, JIANG XUANRONG
Принадлежит:

The invention discloses a water flow evolution analysis method, device, equipment and medium considering dry and wet boundaries, and the method comprises the steps: comparing each unit node with a preset minimum water depth hmin when a new time step starts, and judging the dry and wet attributes of the unit nodes; judging whether false nodes need to be introduced or not, and if yes, setting and storing the variables; flux vectors and source item vectors in the prediction step and the correction step are calculated respectively, and the selection direction of false nodes is the same as the difference direction of the prediction step and the correction step; and calculating the conservation vector at the next moment on the basis of a difference format of a TVD-MacComark algorithm so as to complete calculation of one time step. According to the method, the phenomenon that the flow velocity is too large when the flux vector and the source item vector are calculated in water flow evolution analysis ...

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Номер записи: 2
27-06-2023 дата публикации

Active epoxy resin diluent as well as preparation method and application thereof

Номер: CN116332895A
Автор: LI XIAOYUN, WANG JUNWEI, KANG MAOQING, ZHAO YUHUA, LI QIFENG, YIN NING, FENG YUELAN
Принадлежит:

The invention relates to an epoxy resin diluent, in particular to an active epoxy resin diluent as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, adding a multifunctional epoxy compound and a catalyst into a high-pressure reaction kettle, introducing nitrogen to exhaust air in the high-pressure reaction kettle, heating to a set temperature, introducing CO2 gas, starting a reaction under a certain pressure, and after the reaction is finished, cooling, exhausting and filtering to obtain a cyclic carbonate compound, namely an active epoxy resin diluent; uniformly mixing the obtained cyclic carbonate compound with epoxy resin, adding an amine curing agent, and curing to obtain the modified epoxy resin. The prepared active epoxy diluent not only can reduce the viscosity of epoxy resin and improve the construction performance of the epoxy resin, but also can improve the comprehensive performance of the epoxy resin and play ...

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Номер записи: 3
02-05-2023 дата публикации

Synthesis method of internal crosslinking type cationic waterborne polyurethane emulsion

Номер: CN116041657A
Автор: ZHAO YUHUA, WANG JUNWEI, KANG MAOQING, LI XIAOYUN, YIN NING, FENG YUELAN, LI QIFENG, ZHANG QINGYUN
Принадлежит:

The invention belongs to the technical field of waterborne polyurethane, and particularly relates to a synthesis method of an internal crosslinking type cationic waterborne polyurethane emulsion. Comprising the following steps: 1) reacting glycidyl with diethanol amine until epoxy groups at 908 cm <-1 > and 845 cm <-1 > disappear through infrared spectroscopic analysis, and stopping the reaction to obtain a faint yellow viscous liquid product EDEOA, namely a tertiary amino cross-linking agent; 2) adding polyol and diisocyanate into the reactor, and heating and carrying out heat preservation reaction while stirring; 3) adding a solvent, a tertiary amine cross-linking agent, a tertiary amine micromolecular alcohol amine chain extender, a solvent and a catalyst for reaction to obtain a polyurethane intermediate; 4) adding a neutralizer into the reaction system to carry out neutralization reaction, and cooling after the reaction is finished; and (5) adding water, quickly and uniformly dispersing ...

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Номер записи: 4
30-05-2023 дата публикации

Seaweed seed large-scale long-term preservation system and method based on upwelling

Номер: CN116171850A
Автор: GAO YAPING, JIANG ZENGJIE, WANG JUNWEI, WANG WEIXIN, ZHANG YITAO, WANG BIN
Принадлежит:

The invention provides an upwelling-based sea grass seed large-scale long-term preservation system, which comprises a plurality of seed suspension devices, an air inlet pipeline, a water inlet pipeline and a water return pipeline, each seed suspension device comprises an organic glass barrel, an air disc support and a separation net, the air disc support is arranged at a certain height from the bottom of the organic glass barrel, and the separation net is arranged on the air disc support. The separation net is arranged in the organic glass barrel and located above the gas disc support, the gas inlet pipeline is communicated with the lower portion of the organic glass barrel, the water inlet pipeline is communicated with the bottom of the organic glass barrel through a water inlet, and the water return pipeline is communicated with the upper portion of the organic glass barrel through a water return port. Based on the same inventive concept, the invention further provides a sea grass seed ...

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Номер записи: 5
27-06-2023 дата публикации

Breeding method of high-yield stress-resistant dwarf new variety rape

Номер: CN116326474A
Автор: CHENG HUI, LI JIE, LIU XIANGCHEN, WANG JUNWEI, JIN KAIMEI, LIU JING, SONG XIAOHUA, ZHEN CAIHONG, LI QIGAN, YU MINGHUI, HU JIANTAO, TONG JUNLI, ZHANG SHUN, SHEN JUN, ZHU DEYAN
Принадлежит:

The invention relates to the technical field of rape breeding, in particular to a breeding method of a high-yield stress-resistant dwarf new variety rape. Comprising the following steps: introducing high-quality high-yield stress-resistant dwarf germplasm Selecting a parent No.1, a parent No.2 and a parent No.3, and respectively performing medicament treatment on the parent No.1, the parent No.2 and the parent No.3; then carrying out assembly hybridization planting to obtain S1-generation seeds; backcrossing the S1 generation to obtain a backcrossed BS1 generation; continuously backcrossing the BS1 generation for five generations to obtain a BS6 generation; hybridizing the BS6-generation seeds to obtain BS7-generation seeds; performing radiation treatment on the BS7 generation seeds; carrying out seed mutagenesis on the BS7 generation seeds subjected to radiation treatment; the treated seeds are sown and subjected to seedling raising, and high-yield stress-resistant dwarf rape plants are ...

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Номер записи: 6
13-06-2023 дата публикации

Method, device and equipment for predicting overtopping burst hydraulic parameters of dam body

Номер: CN116258044A
Автор: JIANG XIANGANG, JIANG XUANRONG, WANG JUNWEI, WU XIAOKUN
Принадлежит:

The invention discloses a dam body overtopping burst hydraulic parameter prediction method, device and equipment, and the method comprises the steps: carrying out the grid division, and building a one-dimensional shallow water equation according to calculation grid points; obtaining each basic parameter of the flux vector and the source item vector; controlling the time step length of the one-dimensional shallow water equation on the basis of a CFL Corona number, and performing numerical discrete solution on the one-dimensional shallow water equation by adopting a difference format of an explicit MacCormark prediction-correction scheme to obtain a conservation vector at the next moment so as to predict the hydraulic parameters of water depth h and flow per unit width q; and introducing a TVD dissipation item near the shock wave, and performing discrete calculation on a source item vector of the one-dimensional shallow water equation in each time step calculation. The dam body overtopping ...

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Номер записи: 7