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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 3. Отображено 3.
02-09-2015 дата публикации

Method and device for simulating detection of relation of coal burst parameter with burst and burst rule

Номер: CN104880738A
Автор: TANG JUN, CHEN YUJIA, LI XIAOWEI, JIANG CHENGLIN, XU LEHUA, TIAN SHIXIANG, YANG DINGDING
Принадлежит:

The invention discloses a method and device for simulating the detection of the relation of a coal burst parameter with burst and the burst rule, and belongs to a test method and device for predicting coal burst. The device consists of a long cylindrical cylinder; a supporting plate; a pressure column; a bearing rod; a sealing plate; a coal body containing gas; a T-shaped tubular plug; a plug sealing cover; a hollow pressure plate; a hinge turnover plate; a pressurizing screw; a pressure meter interface; a short fixed rod; a long fixed rod; and an inflating port. During the measurement of the coal burst parameter, a coal sample is added in the cylinder and is pressed and molded, and then is vacuumized and filled with gas, thereby forming the coal body containing gas. An electric coal drill is used for driving an auger bit to pass through the T-shaped tubular plug and enters into the coal body in the cylinder for measurement. During the burst simulation, the T-shaped tubular plug, the plug ...

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Номер записи: 1
23-04-2014 дата публикации

Method for drilling holes on soft coal seam to measure coal seam gas pressure

Номер: CN103742129A
Автор: TANG JUN, CHEN YUJIA, ZHANG CHAOJIE, JIANG CHENGLIN, LI XIAOWEI, XU LEHUA, TIAN SHIXIANG
Принадлежит:

A method for drilling holes on a soft coal seam to measure coal seam gas pressure comprises the steps of drilling a shallow hole on the coal seam, placing an orifice pipe in the hole, utilizing cement slurry to fix the orifice pipe in the coal seam; performing drilling through the orifice pipe to the deep part of the coal seam, quitting a drill rod, injecting mixed slurry A and B to solidify coal around the drilled hole, performing drilling again along the originally drilled hole to exceed grouting depth by 3-5m; quitting the drill rod, inserting a capsule hole sealing device with a gas pipe and a water pipe in the drilled hole, sequentially connecting a push rod to push the capsule hole sealing device to be near the drilled hole grouting depth; on an orifice, respectively connecting the gas pipe and the water pipe with a connector on a flange cover, fixing the flange cover on the orifice pipe, utilizing a manual pump to inject water into the capsule hole sealing device in the drilled hole ...

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Номер записи: 2
11-07-2023 дата публикации

Pyran naphthoquinone compound, preparation method, composition and application thereof

Номер: CN116410173A
Автор: WU QUANXIANG, ZHANG WEI, XU LEHUA
Принадлежит:

The invention relates to pyran naphthoquinone compounds, a preparation method of the pyran naphthoquinone compounds, a composition of the pyran naphthoquinone compounds and application of the pyran naphthoquinone compounds, and relates to the technical field of medicines. The structural formulas of the pyran naphthoquinone compounds are shown as formulas I-III. The three pyran naphthoquinone compounds have a good inhibition effect on tumor cells such as colon cancer cells HCT116, brain glioma cells LN229, gastric adenocarcinoma cells SGC-7901 and liver cancer cells HepG2. Therefore, the pyran naphthoquinone compound has a good application prospect in the aspect of preparing the anti-tumor drugs.

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Номер записи: 3