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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 5. Отображено 5.
04-08-2023 дата публикации

High-conductivity copper graphene composite material and continuous preparation method thereof

Номер: CN116536641A
Принадлежит:

The high-conductivity copper-graphene composite material comprises a copper base material and a graphene layer, the graphene layer comprises a graphene bottom layer and a plurality of graphene units, the graphene bottom layer covers the surface of the copper base material, and the graphene units are continuously or alternately distributed on the surface of the graphene bottom layer. Each graphene unit comprises a plurality of graphene unit layers which are sequentially stacked from bottom to top and have the same area or are sequentially reduced, the graphene coverage rate of the surface of the copper base material is greater than or equal to 96%, graphene Raman spectrum characteristic peaks comprise a peak D and a peak G, and the intensity ratio ID/IG of the peak D to the peak G is 0-0.55. The high-quality graphene layer can be obtained, a continuous transmission path is provided for electrons, scattering of the electrons is reduced, the copper base material is prevented from being oxidized ...

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01-05-2018 дата публикации

Thing robot is got to intelligence

Номер: CN0207290103U
Принадлежит: UNIV ANHUI JIANZHU, ANHUI JIANZHU UNIVERSITY

The utility model discloses a thing robot is got to intelligence, the X slide rail is equipped with X motor, Y motor respectively with the interior one end of Y slide rail, be connected with X shaft coupling, Y shaft coupling on the main shaft of X motor, Y motor respectively, the X shaft coupling, the Y shaft coupling all links there is ball, X slide rail one side is fixed with the singlechip, ball screw threaded connection on the X slide rail has a X slider, Y slide rail upper surface is connected with the X slider, ball threaded connection on the Y slide rail has a Y slider, be equipped with a support arm on the Y slider, the support arm lower extreme is connected with the backup pad, the backup pad is connected with the support column, the support column other end is connected with thebottom suspension fagging, and when getting the thing, the removal of arm is realized with the Y motor to the single chip microcomputer control X motor, then catches the image by the camera to through ...

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18-04-2023 дата публикации

Coating for copper and copper alloy, copper and copper alloy and preparation method

Номер: CN115976445A
Принадлежит:

The invention discloses a coating for copper and copper alloy. The coating is characterized by comprising the following components in percentage by mass: 0.5-3.5 wt% of Ag, 0.01-0.6 wt% of Zn and the balance of Sn and inevitable impurities, the microstructure of the coating contains a ternary eutectic structure of beta-Sn, Ag3Sn and zeta-AgZn. By controlling the contents of Zn and Ag in the coating, a zeta-AgZn phase is formed, and the number of hard Ag3Sn phase particles is reduced, so that a beta-Sn, Ag3Sn and zeta-AgZn ternary eutectic structure which is finer than a beta-Sn and Ag3Sn binary eutectic structure is obtained, and the bending performance of the coating is effectively improved and the contact resistance is reduced while the wear resistance and the resistance of the alloy are ensured. The contact resistance of the coating is less than or equal to 30m omega, the neutral salt spray corrosion resistance time is more than or equal to 36h, the friction coefficient is less than ...

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16-05-2023 дата публикации

Traffic accident influence factor analysis method

Номер: CN116128340A
Принадлежит:

The invention relates to a traffic accident influence factor analysis method, which comprises the following steps: collecting a traffic accident data set which comprises various influence factors of a traffic accident; performing data preprocessing on the traffic accident data set to obtain a target traffic accident data set; performing importance evaluation on the influence factors of the target traffic accident data set by using a random forest to obtain importance scores of the influence factors; sorting the importance scores from small to large as an input sequence of the K2 algorithm model, inputting the target traffic accident data set into the K2 algorithm model for training, eliminating influence factors irrelevant to the traffic accidents, and forming a new data set by the residual influence factors; and re-inputting the new data set into the K2 algorithm model for training to obtain an influence factor analysis model, and performing influence factor analysis by using the influence ...

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11-08-2023 дата публикации

Data access method and device, disk controller, disk and data storage system

Номер: CN116583827A
Принадлежит:

The invention discloses a data access method and device, a disk controller, a disk and a data storage system.The data access method comprises the steps that the disk controller obtains first data to be written into a target disk and sends the first data to the target disk; when it is determined that the first data needs to be written in a delayed mode, the disk controller sends a delayed writing instruction for the first data to the target disk, so that the target disk is prevented from frequently executing data writing operation, and resource consumption caused by data writing is reduced; or, the disk controller determines a target storage address of the prefetched data and a target disk, and sends a prefetched data instruction generated based on the target storage address to the target disk, so that the target disk stores the data stored in the nonvolatile memory into the cache unit, and the data can be directly read from the cache unit subsequently. According to the data storage method ...

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