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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 6. Отображено 6.
18-03-2009 дата публикации

Polyamide adenines compounds and preparation method thereof

Номер: CN0101386676A
Автор: YAN YONGGANG, NAN JINGTIAN, LUO XIAOMAN, LI HONG, LU GUOYU, YANG JIE, YANG AIPING, YONGGANG YAN, JINGTIAN NAN, XIAOMAN LUO, HONG LI, GUOYU LU, JIE YANG, AIPING YANG
Принадлежит:

The invention relates to a polyacyl adenine compound and a preparation method thereof. The structure of the compound is shown in formula (I), wherein Ar represents 1,4- diphenyl, 1,3- diphenyl, biphenyl ether-4, 4'-diphenyl, and biphenyl sulfone-4, 4'-diphenyl. The method comprises the following steps: taking one of anhydrous calcium chloride and anhydrous lithium chloride as a catalyst and inert gas for protection, adding corresponding aroma diacid chloride to adenine solution dissolved in an amide polarity aprotic solvent under the condition of sufficient mixing and at a temperature of between 5 DEG C below and 5 DEG C, carrying out neutralization reaction with dried aprotic amines to generate chlorine hydride, and then obtaining the polyacyl adenine product after continuous reaction at the temperature increased to between 60 and 80 DEG C. The polyacyl adenine compound has the properties of high temperature resistance, biosafety, innocuity, degradability under certain conditions, and ...

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Номер записи: 1
08-12-2010 дата публикации

Polyamide adenines compounds and preparation method thereof

Номер: CN0101386676B
Автор: YAN YONGGANG, LU GUOYU, LI HONG, NAN JINGTIAN, YANG JIE, LUO XIAOMAN, YANG AIPING, YONGGANG YAN, GUOYU LU, HONG LI, JINGTIAN NAN, JIE YANG, XIAOMAN LUO, AIPING YANG
Принадлежит:

The invention relates to a polyacyl adenine compound and a preparation method thereof. The structure of the compound is shown in formula (I), wherein Ar represents 1,4- diphenyl, 1,3- diphenyl, biphenyl ether-4, 4'-diphenyl, and biphenyl sulfone-4, 4'-diphenyl. The method comprises the following steps: taking one of anhydrous calcium chloride and anhydrous lithium chloride as a catalyst and inertgas for protection, adding corresponding aroma diacid chloride to adenine solution dissolved in an amide polarity aprotic solvent under the condition of sufficient mixing and at a temperature of between 5 DEG C below and 5 DEG C, carrying out neutralization reaction with dried aprotic amines to generate chlorine hydride, and then obtaining the polyacyl adenine product after continuous reaction atthe temperature increased to between 60 and 80 DEG C. The polyacyl adenine compound has the properties of high temperature resistance, biosafety, innocuity, degradability under certain conditions, and the ...

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Номер записи: 2
29-04-2009 дата публикации

Degradable biological composite material of phosphate containing calcium and preparation method thereof

Номер: CN0101417149A
Автор: YAN YONGGANG, LI HONG, NAN JINGTIAN, LUO XIAOMAN, HUANG ZHIJUAN, HE LIPING, YANG JIE, ZHANG QIYI, LU GUOYU, YANG AIPING, YONGGANG YAN, HONG LI, JINGTIAN NAN, XIAOMAN LUO, ZHIJUAN HUANG, LIPING HE, JIE YANG, QIYI ZHANG, GUOYU LU, AIPING YANG
Принадлежит:

The invention provides a degradable bioactivity composite containing calcium phosphate and a preparation method thereof. The composite consists of calcium phosphate and a multiple amino acid polymer; wherein, the weight percentage of inorganic composition is not more than 50 percent and the residual substance is the multiple amino acid polymer which is formed by the polymerization of caprolactam and at least 5 other amino acids; wherein, the molar ratio of the caprolactam in the polymer is 40-90 percent and the respective molar ratio of other single amino acid is not less than 0.5 percent. During preparation, the caprolactam is mixed with all amino acids and dehydration is carried out under the protection of inert gases and stirring, and pre-polymerization composition reaction and polymerization reaction are respectively carried out at the temperature of 210-250DEG C, thus obtaining the composite. The indexes of the prepared material such as mechanic performance, degradation period and ...

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Номер записи: 3
28-10-2009 дата публикации

Method for preparing bone-like apatite controlled by thermodynamics

Номер: CN0101565178A
Автор: YAN YONGGANG, LIU YONGLEI, LI HONG, LU GUOYU, YANG AIPING, PEI FUXING, SONG YUEMING, TU ZHONGQI, DUAN HONG, CAO XIA, JIANG WEI, LUO XIAOMAN, NAN JINGTIAN, YONGGANG YAN, YONGLEI LIU, HONG LI, GUOYU LU, AIPING YANG, FUXING PEI, YUEMING SONG, ZHONGQI TU, HONG DUAN, XIA CAO, WEI JIANG, XIAOMAN LUO, JINGTIAN NAN
Принадлежит:

The invention relates to a method for preparing bone-like apatite controlled by thermodynamics. Water micro-soluble calcium salts with a Ksp value larger than that of bone-like apatite, such as calcium sulphate or hydrate thereof and the like, are taken as raw materials and react in a water solution of a water-soluble phosphate, thus obtaining the bone-like apatite; the yield of the product is above 95 percent, and the molar ratio of Ca/P is consistent with the theoretical computation of the raw materials. The method is characterized in that the reaction process is thermodynamic spontaneous reaction controlled by thermodynamics instead of dynamics; therefore, reaction condition does not affect the final composition and property of the product, and the product is stable and has less impurities; the prepared nano bone-like apatite sizing material can be directly applied to preparing corresponding nano biomimetic composite bone repairing and substituting materials and the like or used for ...

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Номер записи: 4
14-01-2009 дата публикации

Composite polymer bone-renovation material containing ceramic component and preparation method thereof

Номер: CN0101342384A
Автор: YAN YONGGANG, LI HONG, LU GUOYU, CAO XIA, WANG YUNFANG, YANG AIPING, LUO XIAOMAN, PEI FUXING, SONG YUEMING, DUAN HONG, YONGGANG YAN, HONG LI, GUOYU LU, XIA CAO, YUNFANG WANG, AIPING YANG, XIAOMAN LUO, FUXING PEI, YUEMING SONG, HONG DUAN
Принадлежит:

The present invention relates to a bone-repairing composite polymer material containing a ceramic ingredient and a preparation method thereof. The bone-repairing composite polymer material is composed of the calcium phosphate ceramic ingredient and a polybasic amino acid polymer ingredient, wherein, the mass ratio of the calcium phosphate ceramic ingredient is between 5 percent and 30 percent, and the rest is the polybasic amino acid polymer ingredient. Epsilon-aminocaproic acid is polymerized with at least two other types of amine acids to form the polybasic amino acid polymer ingredient, wherein, the mole ratio of the epsilon-aminocaproic acid in the polybasic amino acid polymer ingredient is between 50 percent and 90 percent, and the rest is the other amine acids including aminoacetic acid, lactamic acid, phenylalanine, lysine and proline. Under the protection of a inert gas, the materials, the amine acids and the calcium phosphate, are sufficiently and uniformly dispersed into water ...

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Номер записи: 5
21-11-2012 дата публикации

Degradable biological composite material of phosphate containing calcium and preparation method thereof

Номер: CN0101417149B
Автор: GUOYU LU, QIYI ZHANG, AIPING YANG, HONG LI, XIAOMAN LUO, ZHIJUAN HUANG, JIE YANG, LIPING HE, YONGGANG YAN, JINGTIAN NAN, LU GUOYU, ZHANG QIYI, YANG AIPING, LI HONG, LUO XIAOMAN, HUANG ZHIJUAN, YANG JIE, HE LIPING, YAN YONGGANG, NAN JINGTIAN
Принадлежит:

The invention provides a degradable bioactivity composite containing calcium phosphate and a preparation method thereof. The composite consists of calcium phosphate and a multiple amino acid polymer; wherein, the weight percentage of inorganic composition is not more than 50 percent and the residual substance is the multiple amino acid polymer which is formed by the polymerization of caprolactam and at least 5 other amino acids; wherein, the molar ratio of the caprolactam in the polymer is 40-90 percent and the respective molar ratio of other single amino acid is not less than 0.5 percent. During preparation, the caprolactam is mixed with all amino acids and dehydration is carried out under the protection of inert gases and stirring, and pre-polymerization composition reaction and polymerization reaction are respectively carried out at the temperature of 210-250DEG C, thus obtaining the composite. The indexes of the prepared material such as mechanic performance, degradation period and ...

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Номер записи: 6