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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 8. Отображено 8.
30-06-2010 дата публикации

Preparation method of betulonic acid

Номер: CN0101759759A
Автор: QIU WENWEI, GONG XUEPING, LIU BING, TANG JIE, XU JUN, YANG FAN, WENWEI QIU, XUEPING GONG, BING LIU, JIE TANG, FAN YANG
Принадлежит:

The invention discloses a preparation method of betulonic acid, belonging to the technical field of organic chemosynthesis. The method comprises the steps of: oxidizing betulin with oxygenant 2-Iodoxy benzoic acid (IBX) to obtain betulonic aldehyde, wherein the yield is 90%; and further oxidizing the betulonic aldehyde with Bu4NMnO4 to obtain the betulonic acid, wherein the yield is 95%. The total yield of the two steps is 85.5%, and is well above the yield of the prior art. The preparation method has the advantages of abundant raw material source, easy obtaining, low price, mild reaction condition and high yield, and being environment-friendly and suitable for industrial production. The betulonic acid has the effects of tumor resistance, herpes virus resistance and immunity promotion, and the like, and is an important intermediate for preparing betulinic acid.

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Номер записи: 1
28-04-2023 дата публикации

Preparation method of winding type cylindrical battery pole group and battery pole group

Номер: CN116031463A
Автор: JING LEI, XUE LEI, XIAO FEI, GONG XUEPING
Принадлежит:

The invention discloses a preparation method of a winding type cylindrical battery pole group, which comprises the following steps: S1, aligning one end of a first diaphragm and one end of a second diaphragm, attaching the first diaphragm and the second diaphragm to a cylindrical winding needle, and then rotating the first diaphragm and the second diaphragm around the cylindrical winding needle for two circles; step S2, inserting the starting end of the negative plate into the gap between the two diaphragms and inserting the starting end to the bottom, then winding the starting end of the outer active material layer of the negative plate between the first diaphragm and the second diaphragm by a preset length in the circumferential direction, and then stopping winding; s3, inserting a starting end of a positive plate into the radial inner side of the first diaphragm, and then winding until a battery pole group is formed; s4, sticking a termination adhesive tape at the winding termination ...

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Номер записи: 2
18-11-2015 дата публикации

Bladder fistulization pipe

Номер: CN0204766096U
Автор: GONG XUEPING
Принадлежит:

The utility model discloses a bladder fistulization pipe relates to medical instrument technical field. The utility model discloses a bladder fistulization pipe includes the catheter, the catheter is kept away from human one end and is connected with the catheterization bag, bladder fistulization pipe still includes fixing device, fixing device includes boss and edge, be provided with the through -hole on the boss, the catheter runs through the through -hole, the edge can be pasted on the human body, and is fixed the catheter. The utility model provides a bladder fistulization pipe has overcome fistulization pipe poor problem that is difficult for carrying of fixed effect on the human body in the past, can guarantee good fixed effect.

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Номер записи: 3
24-06-2015 дата публикации

Animal-source-free component culture method for differentiation from human pluripotent stem cells to germ cells

Номер: CN104726400A
Автор: WANG YUAN, ZHAO YUNCHENG, MA QING, KONG RUIJIAO, GONG XUEPING
Принадлежит:

The invention discloses an animal-source-free component culture method for differentiation from male source pluripotent stem cells to germ cells. Under the conditions of a serum-free animal-source-protein-free culture solution, the male source pluripotent stem cells generate spermatogonia-like stem cells and haploid cells in the in-vitro differentiation process. The invention also discloses a serum-free animal-source-protein-free culture solution system. The serum-free animal-source-protein-free culture method disclosed by the invention is simple to operate, has high repeatability, has wide clinical application value, and provides a basic technical platform for the research of germ cell generation mechanisms and the diagnosis and treatment of male non-obstructive azoospermia.

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Номер записи: 4
04-08-2010 дата публикации

Light affinity labelling small molecular probe based on maslinic acid and preparation method thereof

Номер: CN0101792478A
Автор: WENWEI QIU, XUEPING GONG, JIE TANG, FAN YANG, YANHUA YU, HUI ZOU, QIU WENWEI, GONG XUEPING, TANG JIE, YANG FAN, YU YANHUA, ZOU HUI
Принадлежит:

The invention relates to a light affinity labelling small molecular probe based on maslinic acid and preparation method thereof, belonging to the technical field of organic compound and preparation thereof. Natural product maslinic acid is taken as initial raw material, compound I is obtained under the protection of acetyl, the compound I reacts with oxalyl chloride to obtain compound II, the compound II reacts with ethane diamine under single protection of Boc to obtain compound III, the compound III firstly strips Boc protecting group in HCl ethyl acetate solution and then reacts with segment IV with light affinity labelling group to obtain compound V, the compound V strips acetyl protecting group by hydrolysis with presence of alkali, so as to obtain light affinity labelling small molecular probe VI. The probe molecule can be used for researching and discovering active compound maslinic acid in vivo action target, action mode of target spot and structural information of active site and ...

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Номер записи: 5
25-07-2023 дата публикации

Method for detecting pressure source by using online pressure gauge

Номер: CN116481712A
Автор: HUANG JIE, LIU XIAOJIAO, GONG XUEPING, HE WEN, GUAN JIE, LIU YIJUN
Принадлежит:

The invention discloses a method for detecting a pressure source by using an online pressure gauge, belongs to the technical field of instrument detection, and is applied to a pressure gauge group under the same pressure source. The pressure gauge group comprises three or more than three pressure gauges; comprising the following steps: recording the pressure indicating value of each pressure gauge in a pressure gauge group at the same moment, and recording the temperature at the moment; judging whether all the pressure gauges in the pressure gauge group meet the use requirements or not according to the pressure indicating values, and if yes, judging whether the pressure indicating values of all the pressure gauges in the pressure gauge group are within the allowable range of the pressure sources at the pressure gauge mounting positions or not; and if the pressure indicating value of the pressure gauge is not in the range, the pressure source does not meet the use requirement. Whether the ...

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Номер записи: 6
04-07-2012 дата публикации

Preparation method of betulonic acid

Номер: CN0101759759B
Автор: QIU WENWEI, GONG XUEPING, LIU BING, TANG JIE, XU JUN, YANG FAN, WENWEI QIU, XUEPING GONG, BING LIU, JIE TANG, FAN YANG
Принадлежит:

The invention discloses a preparation method of betulonic acid, belonging to the technical field of organic chemosynthesis. The method comprises the steps of: oxidizing betulin with oxygenant 2-Iodoxy benzoic acid (IBX) to obtain betulonic aldehyde, wherein the yield is 90%; and further oxidizing the betulonic aldehyde with Bu4NMnO4 to obtain the betulonic acid, wherein the yield is 95%. The total yield of the two steps is 85.5%, and is well above the yield of the prior art. The preparation method has the advantages of abundant raw material source, easy obtaining, low price, mild reaction condition and high yield, and being environment-friendly and suitable for industrial production. The betulonic acid has the effects of tumor resistance, herpes virus resistance and immunity promotion, and the like, and is an important intermediate for preparing betulinic acid.

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Номер записи: 7
18-07-2023 дата публикации

Independent pressure source and pressure gauge online detection method

Номер: CN116448314A
Автор: HUANG JIE, LIU XIAOJIAO, GONG XUEPING, GUAN JIE, HUANG KECHENG
Принадлежит:

The invention discloses an independent pressure source and pressure gauge online detection method, and belongs to the field of instrument detection, and the method comprises the steps: recording the pressure indicating value of a pressure gauge under an independent pressure source, and recording the temperature at the moment and the pressure indicating value of each pressure gauge in a pressure gauge group under a pressure source I; the pressure gauges under the independent pressure source and the pressure gauges in the pressure gauge group under the pressure source I are connected in pairs; and judging whether all the pressure gauges in the pressure gauge group of the pressure source I and the pressure source I meet the use requirements, if so, judging whether the difference between the pressure indicating values of the two pressure gauges in the pressure gauge group exceeds an allowable fluctuation range, and if not, judging that the independent pressure source or/and the pressure gauges ...

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Номер записи: 8