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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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Форма поиска

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

Precoated sand stack box pouring tool and pouring method thereof

Номер: CN115889686A
Автор: WANG HONGLIN, WANG JING, GAO WEIQUN
Принадлежит:

The precoated sand stack box pouring tool comprises a vibration base, a first pouring piece and a second pouring piece, the first pouring piece and the second pouring piece are both mounted on the upper portion of the vibration base in a spliced mode, and the first pouring piece and the second pouring piece are arranged side by side; each of the first pouring piece and the second pouring piece comprises a fixed chassis, a second sleeve shell, a first sleeve shell and a fixed top cover, the second sleeve shell fixedly sleeves the upper part of the fixed chassis, the first sleeve shell fixedly sleeves the upper part of the second sleeve shell, and the fixed top cover fixedly sleeves the upper part of the first sleeve shell; inner mold bodies are arranged in the middle positions of the inner sides of the first sleeve shell and the second sleeve shell; the first pouring piece and the second pouring piece are designed in a stacked box type structure, and each of the first pouring piece and the ...

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Номер записи: 1
15-08-2023 дата публикации

Method for batch construction of zeolite models with different cation exchange silica-alumina ratios

Номер: CN116595799A
Автор: SUN WEIZHEN, ZHAO YAJUN, ZHENG WEIZHONG, YANG WEIQIANG, ZHAO LING, GAO WEIQUN, YAN KEXIN
Принадлежит:

The invention discloses a method for batch construction of silica-alumina ratio zeolite models for different cation exchanges.The method comprises the steps that an all-silica zeolite structure serves as a mother structure, and specific silica-alumina ratio silica-alumina zeolite structures for different cation exchangesare constructed through perl and shell language in combination with MaterialStudio and MOPAC software. According to the method, a time-consuming manual Al atom replacement link is avoided, and the experimental synthesis period is greatly shortened. In addition, by comparing the energy of the constructed molecular sieve, the method can effectively identify the structure with the lowest energy, and the structure is used as the most reasonable zeolite structure under the equilibrium ion and silica-alumina ratio. The construction method of the silicon-aluminum zeolite has important significance on zeolite in the aspects of gas storage, adsorption separation, catalysis and the ...

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Номер записи: 2