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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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Форма поиска

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 6. Отображено 6.
02-06-2023 дата публикации

Prefabricated novel tenon-and-mortise type profile steel-concrete beam column joint design and construction method

Номер: CN116201230A
Автор: LIANG XIANCHAO, JIANG HAOTIAN, SHI SHENGHUI, CHEN TING
Принадлежит:

The invention discloses a design and construction method for a prefabricated novel tenon-and-mortise type profile steel-concrete beam column joint, and relates to the technical field of building joint splicing, in particular to the design and construction method for the prefabricated novel tenon-and-mortise type profile steel-concrete beam column joint. The structure comprises a lower prefabricated column, a prefabricated tenon-and-mortise joint, an upper prefabricated column and prefabricated beams, the prefabricated tenon-and-mortise joint is fixedly arranged at the top end of the lower prefabricated column, the upper prefabricated column is inserted into the top end of the prefabricated tenon-and-mortise joint, and the prefabricated beams are inserted into the left side and the right side of the prefabricated tenon-and-mortise joint; positioning plates are arranged at the front end and the rear end of the inner side of the prefabricated mortise and tenon joint, and positioning grooves ...

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Номер записи: 1
18-07-2023 дата публикации

Cone-beam X-ray fluorescence CT geometric parameter correction method and system

Номер: CN116452690A
Автор: JIANG SHANGHAI, LI XIANGPENG, ZHAO MINGFU, LUO BINBIN, TANG BIN, SHI SHENGHUI, ZOU XUE
Принадлежит:

The invention is suitable for the technical field of CT imaging, and provides a cone-beam X-ray fluorescence CT geometric parameter correction method and system, and the method comprises the following steps: building a cone-beam X-ray fluorescence CT simulation model, and obtaining X-ray fluorescence spectrum data; analyzing and processing the X-ray fluorescence spectrum data to obtain original projection data of the X-ray fluorescence CT; according to the projection data obtained by Monte Carlo simulation, using a reconstruction algorithm to carry out image reconstruction on the original projection data; densely sampling the offset parameters of the reconstructed image in the error domain of the offset parameters, and calculating the local linear relation between the re-projection data and the original projection data and the re-projection data by using the ideal projection matrix so as to correct the offset parameters; and performing geometric correction based on a local linear relationship ...

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Номер записи: 2
25-04-2012 дата публикации

Band-pass filter of mechanical adjustable pi-phase shift period structure

Номер: CN0101963683B
Автор: ZHOU XIAOJUN, ZHANG ZHIYAO, ZOU JUN, SHI SHENGHUI, XIAOJUN ZHOU, ZHIYAO ZHANG, SHENGHUI SHI
Принадлежит:

The invention discloses a band-pass filter adopting mechanical adjustable pi-phase shift periodic structure. The band-pass filter comprises a pi-phase shift periodic force applying device and an optical fiber. The force applying device comprises a clamping bottom plate in a periodic structure and a clamping cover plate, wherein the optical fiber is placed in the V-shaped dentoid structure of the clamping bottom plate, the clamping cover plate is mutually inserted with the clamping bottom plate for placing the optical fiber, and when the force is applied to the two clamping plate, a periodic micro bend effect and a periodic elasto-optical effect are generated by periodic radial pressure applied to the optical fiber to form a long-period optical fiber Bragg grating. In the technical scheme of the invention, one ore more lengths are introduced to the clamping bottom plate and the clamping cover plate as intervals, and one or more pi-phase shifts are introduced in the periodic structure so ...

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Номер записи: 3
04-07-2023 дата публикации

X-ray fluorescence CT self-absorption correction method based on deep learning

Номер: CN116385582A
Автор: JIANG SHANGHAI, SUN MENGYING, HU XINYU, ZHAO MINGFU, LUO BINBIN, TANG BIN, SHI SHENGHUI, ZOU XUE
Принадлежит:

The invention provides an X-ray fluorescence CT self-absorption correction method based on deep learning. The X-ray fluorescence CT self-absorption correction method comprises the steps that a numerical simulation model of fan-beam X-ray fluorescence CT is established; and performing scanning imaging on the gold nanoparticles with different shapes and different concentrations by using the numerical simulation model, wherein each imaging model body consists of thirty ellipses and rectangles with different attenuation coefficients, sizes and positions. The generated projection sinogram is used as a training data set of the U-net network; building a U-net network model, and correcting the projection sinogram to obtain a corrected image; and reconstructing the corrected image by using a maximum likelihood iterative reconstruction method to obtain a fan-beam XFCT reconstructed image. The deep learning neural network is a model which is built based on a UNET architecture and can correct the incomplete ...

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Номер записи: 4
02-02-2011 дата публикации

Band-pass filtering method of mechanical adjustable pi-phase shift period structure and band-pass filter adopting same

Номер: CN0101963683A
Автор: XIAOJUN ZHOU, ZHIYAO ZHANG, ZOU JUN, SHENGHUI SHI, ZHOU XIAOJUN, ZHANG ZHIYAO, SHI SHENGHUI
Принадлежит:

The invention discloses a band-pass filtering method of mechanical adjustable pi-phase shift periodic structure and a band-pass filter adopting the same. The band-pass filter comprises a pi-phase shift periodic force applying device and an optical fiber. The force applying device comprises a clamping bottom plate in a periodic structure and a clamping cover plate, wherein the optical fiber is placed in the V-shaped dentoid structure of the clamping bottom plate, the clamping cover plate is mutually inserted with the clamping bottom plate for placing the optical fiber, and when the force is applied to the two clamping plate, a periodic microbend effect and a periodic elasto-optical effect are generated by periodic radial pressure applied to the optical fiber to form a long-period optical fiber Bragg grating. In the technical scheme of the invention, one ore more lengths are introduced to the clamping bottom plate and the clamping cover plate as intervals, and one or more pi-phase shifts ...

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Номер записи: 5
29-08-2023 дата публикации

Lithium battery for electric bicycle

Номер: CN116666834A
Автор: CHEN HU, ZHU WEIJIA, FAN XIAOYAN, LI JINBIAO, CHEN FU, SHI SHENGHUI, ZOU YUTONG, HE RUXI
Принадлежит:

The invention relates to a lithium battery for an electric bicycle, which comprises a shell for protecting a lithium battery pack, a heating film is connected with a power bank through a portable power socket for temperature compensation, heat is exchanged through a heat conduction piece to realize heat dissipation and heat absorption, a hidden BMS-PCB structure prevents man-made damage and is antitheft, and LFP cells are adopted to form the lithium battery pack. The heat transfer guide sheets are installed between the battery cells in a matched mode to collect or release heat, the heat is collected through the heat collection sheets, then heat exchange is conducted through the cooling fins, and the double functions of heat dissipation and temperature compensation in cold seasons are achieved. The lithium battery has a good use effect, can also be used for power supplies of electric tricycles and electric motorcycles, and is suitable for application in cold regions.

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Номер записи: 6