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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 10. Отображено 10.
12-01-2017 дата публикации

PREPARATION METHOD FOR ALUMINA SUPPORTED CERIUM OXIDE POWDER MATERIAL

Номер: WO2017005042A1
Автор: ZHANG, Jianfeng, ZHANG, Xin, CAO, Huiyang, GUO, Wenmin, LI, Gaiye, WU, Yuping
Принадлежит:

A preparation method for an alumina supported cerium oxide powder material. A cerium organometallic precursor is effectively decomposed into CeO2 nanoparticles at 500-700°C in an oxygen atmosphere condition by using a chemical vapor deposition method, and the CeO2 nanoparticles are evenly dispersed on an Al2O3 support. The decomposition of the CeO2 precursor is accelerated by changing experimental parameters of reaction of organic materials and oxygen, so as to control the size and microstructure of powder, thereby achieving the preparation and even dispersion of cerium oxide nanoparticles, and avoiding the problem of generation of toxic waste water during reaction.

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Номер записи: 1
23-12-2015 дата публикации

TUNGSTEN CARBIDE-CUBIC BORON NITRIDE COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF

Номер: WO2015192815A1
Автор: ZHANG, Jianfeng, WU, Yuping, HONG, Sheng, LI, Gaiye, GUO, Wenmin
Принадлежит:

A method of preparing tungsten carbide-cubic boron nitride composite material, employing chemical vapor deposition and high temperature sintering: first, respectively coating WC and cBN surfaces with nanoparticle layers, and then sintering at a high temperature to obtain bulk material. The produced tungsten carbide-cubic boron nitride composite material has characteristics of high structural thermostability, high hardness and the like, and can serve as the material for high-speed cutting blades.

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Номер записи: 2
12-05-2011 дата публикации

OPTICAL ISOMERS OF ARALKYL PIPERAZINE DERIVATIVE, PREPARATION METHODS AND USES THEREOF

Номер: WO2011054185A1
Автор: WANG, Binglin, LIU, Changying, YANG, Hanyu, MA, Yuxiu, YU, Pu, GUO, Wenmin, GUO, Xiaofeng, SONG, Lingjie
Принадлежит:

Preparation methods of optical isomers of compound of formula (B) and preparation methods of optical isomers of compound of formula (A) by using the said optical isomers of compound of formula (B) are disclosed, in which chiral camphor sulfonic acid acts as resolution reagent and the optical isomer mixtures or racemes of compound of formula (B) are chemically resoluted.. By using the optical isomers of the present compound of formula (B), the optical isomers of compound of formula (A) which are useful as antidepressants can be obtained with high yield and high purify.

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Номер записи: 3
18-02-2016 дата публикации

PREPARATION METHOD FOR HIGH-DENSITY HEXAGONAL BORON NITRIDE CERAMIC MATERIAL

Номер: WO2016023200A1
Автор: ZHANG, Jianfeng, WU, Yuping, LI, Gaiye, HONG, Sheng, GUO, Wenmin
Принадлежит:

A preparation method for a high-density hexagonal boron nitride (hBN) ceramic material. The method adopts ethyl orthosilicate as a raw material to coat a uniformly dispersed SiO2 nano-particle layer onto the surface of an hBN powder, then obtains the high-density hBN ceramic material by adopting a pressureless sintering method, wherein the relative density of the prepared hBN ceramic material reaches not less than 80%. The method achieves the uniform dispersion of the SiO2 sintering aid by coating SiO2 onto the surface of the hBN powder, obtains the high-density hBN ceramic in combination with high-temperature pressureless sintering, and improves the high-temperature operating temperature and high-temperature properties of the hBN while reducing the usage amount of SiO2.

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Номер записи: 4
18-02-2016 дата публикации

METHOD FOR COATING METAL NANOPARTICLES ON SURFACE OF OXIDE CERAMIC POWDER

Номер: WO2016023405A1
Автор: ZHANG, Jianfeng, WU, Yuping, GUO, Wenmin, HONG, Sheng, LI, Gaiye
Принадлежит:

A method for uniformly coating carbon impurity-free metal nanoparticles on the surface of oxide ceramic powder, comprising: grinding and mixing a metal organic raw material and an oxide ceramic powder, then putting same into a rotary reaction chamber, then, under rotary and heating conditions, introducing an oxidizing gas to oxidize the metal organic raw material into a metal oxide, and finally introducing a reductive gas to reduce the metal oxide into metal-state nanoparticles. Uniform coating of the metal-state nanoparticles is realized, and the problems of the roughening and growing of the nanoparticles caused by a coating reaction with a long time at a high temperature are avoided. The method of the present invention is simple, and is short in preparation period. The prepared metal nanoparticles are dispersed uniformly, and have a wide application prospect in a plurality of fields as a catalytic material, a conductive ceramic, and the like.

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Номер записи: 5
12-05-2011 дата публикации

PREPARATION METHOD OF OPTICAL ISOMERS OF 1-BUTYL-2-HYDROXY-ARALKYL ALCOHOL PIPERAZINE DERIVATIVE

Номер: WO2011054183A1
Автор: WANG, Binglin, LIU, Changying, YANG, Hanyu, YU, Pu, GUO, Wenmin, GUO, Xiaofeng, SONG, Lingjie
Принадлежит:

A preparation method of optical isomers of compound of the following formula (A) is disclosed, in which chiral mandelic acid or its derivatives act(s) as resolution reagent and the optical isomer mixtures or racemes of compound of formula A are chemically resoluted. The optical isomers of compound of formula A which are useful as antidepressants can be prepared by the method with high yield and high purify.

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Номер записи: 6
17-12-2015 дата публикации

METHOD FOR PREPARING TITANIUM NITRIDE-TITANIUM DIBORIDE-CUBIC BORON NITRIDE COMPOSITE

Номер: WO2015188404A1
Автор: ZHANG, Jianfeng, WU, Yuping, HONG, Sheng, GUO, Wenmin
Принадлежит:

A method for preparing a titanium nitride-titanium diboride-cubic boron nitride composite material, wherein a titanium powder and cubic boron nitride are used as raw materials, mixed by the planetary ball-milling method, and then subjected to the steps of wet mixing, drying, sieving, high-temperature vacuum furnace pre-sintering, cold isostatic molding, high-temperature sintering, etc., to prepare the titanium nitride-titanium diboride-cubic boron nitride composite. The method has simple operation, low costs, easily controlled process conditions, and achieves the uniform dispersion between each resulting phase by phase reaction, and can be used to obtain the titanium nitride-titanium diboride-cubic boron nitride ceramic matrix composite with a high density and high mechanical property.

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Номер записи: 7
14-07-2023 дата публикации

Preparation method of powder magnetic metal abrasive dust transmission electron microscope sample

Номер: CN116429477A
Автор: LI DAOXI, ZHU XIANGYING, TANG XIAOFU, ZENG DIPING, GUO WENMIN, ZOU LIHUA
Принадлежит:

The invention discloses a preparation method of a powder magnetic metal abrasive dust transmission electron microscope sample. Comprising the following steps: (1) solidifying powder magnetic abrasive dust between two silicon wafers by adopting epoxy resin; (2) cutting the composite sheet into small slices; (3) embedding the sawed slice sample into a metal tube by using epoxy resin; (4) performing double-sided thinning on the sample in a direction perpendicular to the observation direction of the transmission electron microscope; (5) carrying out double-sided thinning on the embedded sample with the powder magnetic metal abrasive dust by using an ion thinning instrument until holes appear in the middle area of the sample; and (6) carrying out ion polishing on the periphery of the hole on an ion thinning instrument by adopting a two-step method, and generating a continuous thin area with uniform thickness around the hole, so as to obtain the powder magnetic metal abrasive dust transmission ...

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Номер записи: 8
04-04-2023 дата публикации

Real-time segmentation and three-dimensional visualization method for angular point grid geologic model

Номер: CN115908733A
Автор: LI SHIXIN, GUO WENMIN, ZHOU YANG, ZHANG YINGYING
Принадлежит:

The invention relates to the technical field of geologic model visualization, in particular to a real-time segmentation and three-dimensional visualization method for a corner grid geologic model, which comprises the following steps of: generating a data file for describing the geologic model in a corner grid format; reading the data file, and obtaining the number of grids and the attribute value of the grids in each direction; traversing all grids, and calculating space coordinates of all grids in the geologic model through a calculation method of eight space coordinates of a single grid; eliminating irrelevant grid surfaces; reconstructing a three-dimensional geological grid; traversing a top layer grid of the geologic model, and adding the top surface space coordinates of the top layer grid and the corresponding topological relation into a drawing data set; and establishing a three-dimensional geological grid of the divided region. According to the method, the problem that in deep local ...

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Номер записи: 9
18-08-2023 дата публикации

Time-varying load device equivalent to actual working condition of electromagnetic ejection system

Номер: CN116614049A
Автор: HAN YONGSEN, LI ZHONGHUA, GUO WENMIN, ZHENG HUAN
Принадлежит:

The invention provides a time-varying load device equivalent to the actual working condition of an electromagnetic ejection system, and belongs to the technical field of experimental devices. The device comprises a first conductive track, a second conductive track, an armature and a driving device, the armature is electrically connected with the first conductive track and the second conductive track respectively; the driving device is used for driving the armature to move in the extending direction of the first conductive track and the second conductive track; a first insulating track and a second insulating track are arranged on the first conductive track and the second conductive track respectively; the other end of the first conductive track lead on the first conductive track is connected with the high-voltage end of at least one energy storage capacitor connected in parallel; and the other end of the second conductive track lead on the second conductive track and the grounding end of ...

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Номер записи: 10