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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 2. Отображено 2.
14-04-2023 дата публикации

Preparation method of basic neodymium carbonate

Номер: CN115959699A
Автор: WANG ZHI, HUA YONG, WANG DONG, XIAO WANHAI, LIN YONG, LI GUOBIAO
Принадлежит:

The invention provides a preparation method of basic neodymium carbonate, which comprises the following steps: (1) adjusting the pH value of a neodymium salt solution, and carrying out precipitation reaction to obtain a reacted solution; (2) introducing carbon dioxide into the reacted solution to carry out carbonization reaction, and carrying out solid-liquid separation to obtain a precipitate; and (3) sequentially washing and drying the precipitate to obtain the basic neodymium carbonate. The preparation method disclosed by the invention is mild in reaction condition, simple to operate, green and environment-friendly by taking carbon dioxide as a carbon source, and the prepared basic neodymium carbonate is good in dispersity, uniform in morphology, small in particle size and suitable for large-scale production.

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Номер записи: 1
23-06-2023 дата публикации

Plug-in-free webpage on-line display method for security risk state diagram based on CAD (Computer Aided Design)

Номер: CN116305379A
Автор: YAO AIMIN, GONG JIEYING, WANG ZHIJING, LI ZHENDONG, LI GUOBIAO, MENG TAO, DU JIAPENG
Принадлежит:

The invention discloses a plug-in-free webpage on-line display method for a security risk state diagram based on CAD. The method comprises the following steps: step 1, respectively establishing each independent layer according to a self risk project and an environmental risk source to draw a CAD base map of a security risk map; 2, converting the CAD environment risk layer group into a GIS environment risk layer group graph; step 3, performing engineering editing on the GIS environment risk layer graph, and setting each monitoring point; 4, for each monitoring point, forming a data set, performing comparative analysis, and presenting differential settlement in a curve mode; 5, contrastive analysis is carried out on countermeasure points, distances, settlement amounts and settlement deviations, and a curve shows a deformation section; and 6, setting an early warning standard through the system, and synchronously displaying the risk state in the GIS graph. The invention relates to the technical ...

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Номер записи: 2