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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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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 7. Отображено 7.
13-02-2013 дата публикации

Chrysene refining method

Номер: CN102924222A
Автор: Xu Hong, Bai Xuefeng, Lv Hongfei, Li Meng
Принадлежит:

The invention relates to a chrysene refining method and aims to provide a chrysene refining method aiming at the problem that the chrysene purity is low and the chrysene application is limited in the traditional method. The method comprises the following steps of: 1, mixing raw material chrysene and acid for pickling, cooling to room temperature, filtering to obtain solid, washing the solid through distilled water, filtering and drying; and 2, mixing the dried solid and benzene solvents, repeatedly crystallizing twice, and finishing chrysene refining. According to the method, the product with the purity more than 98 percent can be obtained, and the method is applied to the field of luminous materials.

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Номер записи: 1
08-01-2014 дата публикации

Independent arrangement structure of side-direction flow-in funnel type water inlet

Номер: CN103498455A
Автор: Jin Zhenghao, Ma Jun, Wang Changyi, Song Shouping, Qi Shijing, Zhang Jianhui, Zheng Yuling, Cheng Yujiao, Li Runwei, Li Jun, Xia Hui, Lv Hongfei, Jing Jianwei, Lu Yang, Qi Liwei, Yu Shengbo, Gu Yixin, Chen Lei, Yuan Wei
Принадлежит:

The invention relates to an independent arrangement structure of a side-direction flow-in funnel type water inlet and belongs to a water inlet arrangement structure. A trash rack shaft is fixedly connected with a trash rack pier. A trash rack is fixedly connected with the trash rack shaft. A trash rack bottom plate is fixedly connected with the bottom of the trash rack shaft. An upper opening of a funnel-type contraction section is connected with the lower portion of the trash rack bottom plate. A lower opening of the funnel-type contraction section is connected with an upper opening of a stand face curve section. A lower opening of the stand face curve section is connected with a gate well lower section water inlet. The center line of the trash rack is not consistent with the axis of a water guiding tunnel behind the gate well lower section water inlet. A gate shaft is arranged above a gate well lower section. A gate is arranged in the gate shaft. A maintaining platform is connected above ...

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Номер записи: 2
20-02-2013 дата публикации

Preparation method of derivative for substituting anthracenes

Номер: CN102936184A
Автор: Yang Jie, Lv Hongfei, Bai Xuefeng, Shan Wenyan
Принадлежит:

The invention relates to a preparation method of a derivative for substituting anthracenes, belongs to the field of preparation methods of derivatives for substituting the anthracenes, and aims at solving the technical problem that an existing preparation method of the derivative for substituting the anthracenes is complicated in operation and high in reaction condition. The preparation method of the derivative for substituting the anthracenes comprises the steps of firstly, preparing 9,10-dibromo anthracene; and secondly, preparing 9,10-second (substituent group) anthracene. The preparation method of the derivative for substituting the anthracenes can further comprises the steps of: firstly, preparing 9-(substituent group I) anthracene, secondly, preparing 9-bromine-10-(substituent group I); and thirdly, preparing 9-(substituent group II)-10-(substituent group I) anthracene. The preparation method of the derivative for substituting the anthracenes is simple in preparation process, low ...

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Номер записи: 3
11-09-2013 дата публикации

Method for preparing activated carbon with high specific surface area from torreya grandis aril

Номер: CN103288083A
Автор: Sun Xiaohong, Dai Wei, Lv Hongfei, Du Yijun, Gong Rui, Hu Jue
Принадлежит:

The invention relates to a method for preparing activated carbon with a high specific surface area from torreya grandis aril. The method comprises the following steps of: (1) washing the discarded torreya grandis aril as a raw material and drying for 24 hours at the temperature of 100 DEG C; (2) crushing the dried torreya grandis aril until reaching the particle diameter being from 10 meshes to 100 meshes; and (3) carbonizing the crushed torreya grandis aril with an inert gas for 2 hours under the condition that the carbonization temperature is 350 to 650 DEG C while the temperature rising rate during the carbonization is 10 DEG C/min to 12 DEG C/min, thereby preparing the activated carbon which has a pore channel structure and the high specific surface area being 500 m<2>/g to 1000 m<2>/g. The activated carbon which has the high specific surface area and is applied widely is prepared from the discarded torreya grandis aril as the raw material, so that biomass resources are recycled effectively ...

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Номер записи: 4
11-12-2013 дата публикации

Method for synthesizing 4-(trans, trans-4-alkylcyclohexyl) fluorobenzene liquid crystal monomer compounds

Номер: CN103435437A
Автор: Yang Jie, Li Meng, Bai Xuefeng, Lv Hongfei, Xu Hong, Wang Yanhua, Li Shuhui, Shan Wenyan, Ning Zhiqiang, Zhou Hongxia
Принадлежит:

The invention discloses a method for synthesizing 4-(trans, trans-4-alkylcyclohexyl) fluorobenzene liquid crystal monomer compounds, relating to a preparation method for synthesizing fluorobenzene liquid crystal compounds, and solving the problems that the existing method for synthesizing 4-(trans, trans-4-alkylcyclohexyl) fluorobenzene liquid crystal monomer compounds is harsh in reaction conditions, more in by-products, and difficult to realize industrialized production. The method comprises the following steps: 1, preparing ketone; 2, preparing oxime; 3, carrying out a Beckmann rearrangement reaction; 4, preparing substituted aniline hydrochloride; 5, preparing diazonium borofluoride; and 6, preparing a 4-(trans, trans-4-alkylcyclohexyl) fluorobenzene crude product, and carrying out recrystallization treatment on the crude product so as to obtain a 4-(trans, trans-4-alkylcyclohexyl) fluorobenzene liquid crystal monomer compound. The method disclosed by the invention is mild in reaction ...

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Номер записи: 5
02-10-2013 дата публикации

Wide nematic phase temperature range mixed liquid crystal material with quick response under low temperature

Номер: CN103333699A
Автор: Lv Hongfei, Bai Xuefeng, Yang Jie, Li Meng, Xu Hong, Shan Wenyan, Wang Yanhua, Li Shuhui, Zhang Hui
Принадлежит:

The invention belongs to the technical field of liquid crystal material, and particularly relates to wide nematic phase temperature range mixed liquid crystal material with quick response under low temperature, which aims at solving the problems of high melting point, low clearing point, and large viscosity and long response time under a low temperature situation of existing liquid crystal material. The wide nematic phase temperature range mixed liquid crystal material with quick response under the low temperature is prepared by polar group substituted alkyl cyclohexyl benzene bicyclic compound, polar group substituted alkyl dicyclohexyl benzene tricyclic compound, bridged bond-containing polar group substituted alkyl cyclohexyl biphenyl tricyclic compound and bridged bond-containing alkyl cyclohexyl biphenyl compound. The wide nematic phase temperature range mixed liquid crystal material with quick response under the low temperature, disclosed by the invention, can be used for preparing ...

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Номер записи: 6
21-08-2013 дата публикации

Active carbon with microporous-mesoporous structure

Номер: CN103252213A
Автор: Sun Xiaohong, Lv Hongfei, Du Yijun, Wang Guofu, Dai Wei
Принадлежит:

The invention relates to active carbon with a microporous-mesoporous structure. The active carbon with the microporous-mesoporous structure is characterized in that the specific surface area is 2,000 to 3,500 m<2>/g; the aperture is 0.7 to 5 nm; the iodine adsorption value is 1,000 to 1,800 mg/g; the carbon tetrachloride adsorption value is 70 to 130 percent; the strength is more than 95 percent; methylene blue is 200 to 840 percent; and the bulk specific weight is 400 to 550 g/l. The active carbon with the microporous-mesoporous structure has a good adsorption effect. The active carbon has large aperture and high bulk specific weight, namely the average density, comprising air clearance, of materials which are stacked naturally is high, the larger the stacking volume is, the higher the bulk specific weight is, namely the specific surface area is large, in other words, the more the clearance is, the better is effect is.

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Номер записи: 7