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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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Применить Всего найдено 4. Отображено 4.
25-07-2023 дата публикации

Preparation method of dialkylated fused ring quinazolinone derivative

Номер: CN116478170A
Автор: YI RONGNAN, ZHAO MINGMING, YANG YONGCAN, SUN GAOFEI, YANG YUSONG, PENG JINYU, HU YUEFENG, CHEN YAOQING, HUANG JUANJUAN, CHEN JUNHAO, YI XUANYU
Принадлежит:

The invention relates to a preparation method of a dialkylated fused ring quinazolinone derivative, which comprises the following steps: under the condition of an oxidant, taking an olefin substituted quinazolinone compound and an alkyl nitrile or alkyl ester compound as raw materials, and carrying out free radical tandem cyclization reaction to obtain the dialkylated fused ring quinazolinone derivative. The preparation method disclosed by the invention has the advantages of wide application range of reaction substrates, simplicity, high efficiency and green and mild conditions, and has a wide industrial application prospect.

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Номер записи: 1
18-07-2023 дата публикации

Bicyclic reaction method of 1, 6-enyne compound and sulfonyl hydrazide and heteropolycyclic compound

Номер: CN116444417A
Автор: YI RONGNAN, YANG YONGCAN, YANG YUSONG, PENG JINYU, HU YUEFENG, CHEN YAOQING, HUANG JUANJUAN, CHEN JUNHAO, YI XUANYU
Принадлежит:

The invention relates to a bicyclic reaction method of a 1, 6-enyne compound and sulfonyl hydrazide, which comprises the following steps: mixing the 1, 6-enyne compound, sulfonyl hydrazide, a catalyst and an oxidant with water, and reacting to obtain a heteropolycyclic compound; wherein the catalyst is one or more of tetrabutylammonium iodide, iodine, N-iodosuccinimide, potassium iodide and ammonium iodide; the oxidizing agent is one or more of tert-butyl hydroperoxide, tert-butyl peroxybenzoate, dibenzoyl peroxide and di-tert-butyl peroxide. According to the method, the bicyclic reaction of 1, 6-eneyne and sulfonyl hydrazide can be realized in a water phase, the reaction condition of the method is mild, water is used as a reaction solvent, no organic solvent is needed, two new rings are constructed through one-pot reaction, and the method has the advantages of wide application range of a reaction substrate, greenness and high efficiency, and is particularly suitable for industrial production ...

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Номер записи: 2
30-06-2023 дата публикации

Connecting structure of steel reinforced column and steel reinforced beam

Номер: CN116356957A
Автор: TANG GUANGXIAN, CHEN BING, ZHANG KAI, DENG ZHIHENG, ZUO HAO, YANG HAIFENG, NONG LI, HU YUEFENG, TANG XIAOYU, LIAO XIAOMEI, XIANG PING, WEI HANLI, YANG NAFENG, LAO XIAOLIN, RUAN XIAOSHI
Принадлежит:

The invention relates to the technical field of steel structure connection, in particular to a connecting structure of a steel reinforced column and a steel reinforced beam, which comprises a column seat and a beam seat, the column seat is connected with the beam seat, a first mounting groove for mounting the steel reinforced beam is formed in the beam seat, a second mounting groove for mounting the steel reinforced column is formed in the column seat, and the first mounting groove is connected with the second mounting groove. The connecting structure further comprises a column connecting assembly which is arranged in the second mounting groove and used for fixing the steel rib column in the second mounting groove. The beam connecting assembly is arranged in the first mounting groove and used for fixing the steel rib beam in the first mounting groove; the transmission unit is arranged between the column connecting assembly and the beam connecting assembly, and when the main connecting assembly ...

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Номер записи: 3
23-06-2023 дата публикации

Light truss type steel reinforced concrete beam structural member

Номер: CN116290564A
Автор: TANG GUANGXIAN, ZHANG KAI, ZUO HAO, DENG ZHIHENG, CHEN BING, NONG LI, TANG XIAOYU, YANG HAIFENG, LIAO XIAOMEI, XU CHANGCHUN, LI JUN, WEI HANLI, YANG NAFENG, HU YUEFENG, CHEN JIE
Принадлежит:

The invention discloses a light truss type steel-reinforced concrete beam structural member, which belongs to the technical field of steel-reinforced concrete beams and comprises a concrete beam body, a steel-reinforced component is arranged in the concrete beam body, and limiting connecting plates are arranged at two ends of the concrete beam body. The two ends of the limiting connecting plate are fixedly connected with first reinforcing plates corresponding to the steel rib assemblies, the two ends of the concrete beam body are provided with connecting assemblies corresponding to the limiting connecting plate and the first reinforcing plates, each steel rib assembly comprises reinforcing steel plates arranged at intervals, and a plurality of metal supporting plates are arranged on the side faces of the reinforcing steel plates. The side face of the reinforcing steel plate is fixedly connected with a metal reinforcing plate. The device is simple in structure and convenient to use, during ...

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Номер записи: 4