Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 2. Отображено 2.
14-09-2011 дата публикации

Core-spun yarn and preparation method thereof

Номер: CN0102181778A
Автор: HONGKUI GAO, CHUANZHOU XIAO, DANWANG YE, XIHUA FAN, MINGJUN YE, GAO HONGKUI, XIAO CHUANZHOU, YE DANWANG, FAN XIHUA, YE MINGJUN
Принадлежит:

The invention relates to a core-spun yarn which comprises a sheath and a core material, wherein the core material is tightly filled in the sheath. The invention is characterized in that the sheath comprises an outer steel sheet layer and an inner metal layer; both sides of the sheath are folded inwards at the joints of the sheath and are extruded and fixed; the melting point of the metal layer is smaller than that of steel; and the thickness of the metal layer is 0.2mm, and the thickness of the steel sheet layer is 0.2mm. The double-layer composite sheath is adopted to lower the melting point of the surface covering layer on the premise of ensuring the basic strength of the core-spun yarn, so that the tape base can be molten within a short time in the molten iron casting process, thereby fully displaying the action of the powder inoculant, ensuring the inoculation effect of the molten iron flow and ensuring the mechanical properties of the iron castings. The invention has the advantages ...

Подробнее
Номер записи: 1
23-11-2011 дата публикации

High yield synthetic method for quizalofop-p-ethyl

Номер: CN0102250023A
Автор: FEI QI, BO LUAN, JIANLIN ZHANG, YINGXIAN LIU, SHUAI CAO, HONGKUI GAO, QI FEI, LUAN BO, ZHANG JIANLIN, LIU YINGXIAN, CAO SHUAI, GAO HONGKUI
Принадлежит:

The invention relates to a synthetic method for quizalofop-p-ethyl, a high efficiency herbicide. The method comprises the four steps of water straining, substitution, rinsing and crystallization. According to the method, 6-chlorine-2-(4-hydroxyphenoxy)quinoxaline reacts with R(-)p-toluenesulfonyl ethyl lactate, alkali metal and salts thereof are employed as acid binding agents, a single organic solvent is employed as a reaction system, and solid-liquid separation is used for separating a product; the yield of the product exceeds 90%, the content of the product is about 97.5%, and the content of the active substance R is more than 94%. Compared to the conventional technology, the preparation method provided in the invention has the characteristics of little side reaction, a short flow, a stationary process, high yield of the product, high content of the active substance and low energy consumption.

Подробнее
Номер записи: 2