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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 6. Отображено 6.
25-07-2023 дата публикации

Construction method for obliquely crossing and undercrossing expressway by pushing box culvert with ultra-shallow soil

Номер: CN116480375A
Автор: CHEN ZHAO, ZHANG ZHAOYUAN, WANG HAILIN, ZHANG XIN, YANG XIONG, JIANG SHENGBO, SHI XIAOQIONG, JIANG YUAN, WAN ZHIWEN, SUN YULONG, HU XIAOQIN, LIU SHU, ZHANG GUO, TAN SHIHAO, WANG JING, LIU YICHEN
Принадлежит:

According to the construction method of the ultra-shallow soil covering pushing box culvert oblique crossing and undercrossing expressway, the problem of pavement settlement possibly caused when a shallow soil covering box culvert structure obliquely crosses and underpasses the expressway at a large angle is solved, a settlement self-compensation structure is arranged in advance, ground surface settlement is effectively quantified, standardized and controllable, construction is easy and convenient, and the construction efficiency is improved. The implementation effect has small dependence on the construction level, the settlement of the overlying earth surface of the box culvert can be effectively controlled, and the influence on the overlying crossed road in the box culvert pushing and undercrossing construction process is reduced, so that the structural safety and smooth driving of the overlying crossed road are ensured.

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Номер записи: 1
16-05-2023 дата публикации

Oxygen generator pipeline integrated valve group and use method thereof

Номер: CN116123458A
Автор: SHI ZHANHAO, SHI YINGHU, CAO YANQIONG, ZHANG XIANG, JIANG YUAN, LI JIANGUO
Принадлежит:

The invention provides an oxygen generator pipeline integrated valve group which comprises a valve body connected with a first adsorption tower and a second adsorption tower, the valve body is internally provided with a first channel for connecting the gas outlets of the first adsorption tower and the second adsorption tower, a second channel which is communicated with the first channel and is connected with the gas inlet of the first adsorption tower, and a third channel which is communicated with the second channel and is connected with the gas inlet of the second adsorption tower; the valve body is also provided with an air supply channel which is respectively communicated with the air inlets of the first adsorption tower and the second adsorption tower and is used for providing air, and an oxygen outlet channel for discharging oxygen; and the valve body is also provided with a control valve group which is used for controlling the on-off condition of the first channel, the second channel ...

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Номер записи: 2
18-07-2023 дата публикации

Urban traffic structure analysis method and system based on XGBoost model

Номер: CN116452016A
Автор: JIANG YUAN, ZHANG XIAORONG, TANG PENG, YU RUHAI, ZHOU YIN, CAO SHUANG, ZHANG NA, DING RUI
Принадлежит:

The invention relates to the technical field of urban traffic planning analysis, and discloses an XGBoost model-based urban traffic structure analysis method and system, and the method comprises the steps: S1, carrying out the collection of a resident trip mode through resident home-entry sampling investigation and multivariate data fusion analysis, and obtaining the data of the resident trip mode; s2, extracting characteristic indexes of the resident trip mode data; s3, dividing the characteristic indexes into a training set and a test set, inputting the training set into an XGBoost model to train the XGBoost model, and testing the trained XGBoost model to obtain a qualified urban traffic structure analysis model; and S4, inputting mobile phone signaling data of all residents in a region needing to be investigated into the urban traffic structure analysis model to obtain an urban traffic structure analysis result of the region. According to the method, the processing analysis scale and ...

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Номер записи: 3
15-08-2023 дата публикации

C19400 copper alloy strip for semi-etching and preparation method of C19400 copper alloy strip

Номер: CN116590555A
Автор: LIU YUNING, CAO LINGFEI, WU XIAODONG, TANG SONGBAI, BAI MIN, HE BENSHI, JIANG YUAN, YANG YURONG, ZHAO RUILIN, WANG YALI, ZHANG ZHENGHAO, YANG YONGMENG
Принадлежит:

The invention discloses a C19400 copper alloy strip for semi-etching and a preparation method of the C19400 copper alloy strip, and belongs to the technical field of alloy preparation. The preparation method comprises the following steps: S1, burdening: taking a fine iron wire, copper, zinc and a copper-phosphorus intermediate alloy as smelting raw materials; s2, smelting, wherein the smelting raw materials are roasted, and the roasted smelting raw materials are put into a smelting furnace to be smelted to form melt; transferring the melt to a holding furnace for standing; the element content of the melt is measured, and when the Fe element content in the melt is lower than 2.1%-2.6%, the melt is supplemented into the heat preservation furnace in the form of copper-iron intermediate alloy; s3, casting, wherein the melt obtained after standing in the heat preservation furnace is subjected to casting forming, and a cast ingot is obtained; s4, hot rolling and on-line quenching are conducted ...

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Номер записи: 4
15-08-2023 дата публикации

Monolithic temperature control etalon

Номер: CN116594448A
Автор: ZHAO YANTING, JIANG YUAN, JI ZHONGHUA, PENG WENXIN, LI SONGNONG
Принадлежит:

The invention discloses a monolithic temperature control etalon, and belongs to the technical field of laser spectrum and semiconductor laser frequency stabilization. The problem of how to realize low-cost and simple-structure laser continuous frequency tuning and wavelength locking in a wide frequency range in the technical field of laser spectrum is solved. After the monolithic temperature control F-P etalon is used for filtering injected laser, a laser is locked to the temperature control etalon with a tunable transmission peak through an optical feedback system, and continuous tuning and long-term frequency stability of laser frequency are achieved. The wavelength can be tuned by changing the temperature to control the cavity length of the monolithic temperature control etalon.

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Номер записи: 5
01-08-2023 дата публикации

Temporary plugging structure for stage construction of tunnel and construction method of temporary plugging structure

Номер: CN116517600A
Автор: YANG GUOSONG, WANG HAILIN, JIA JIANWEI, YANG XIONG, JIANG SHENGBO, CHEN ZHAO, ZHANG ZHAOYUAN, MA JUNQIU, ZHANG XIN, WAN ZHIWEN, SUN YULONG, JING HUAIJUN, LIU YICHEN, WANG JING, TAN SHIHAO, JIANG YUAN
Принадлежит:

The invention provides a temporary plugging structure for tunnel staged construction and a construction method thereof.The temporary plugging structure comprises an early construction tunnel section, a waterproof assembly and a plugging assembly, the plugging assembly comprises a main plugging wall and an enclosure plugging wall, and the main plugging wall is matched with an opening of the early construction tunnel section; the upper portion of the main body blocking wall is connected with a top plate of an early construction tunnel section, the lower portion of the main body blocking wall is connected with a bottom plate of the early construction tunnel section, and the enclosure blocking wall blocks the side face, away from the early construction tunnel section, of the main body blocking wall. The water stop piece is plugged on the side, away from the early construction tunnel section, of the enclosure plugging wall, a reserved connector unit for installation of the anti-seepage piece ...

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Номер записи: 6