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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.
24-07-2013 дата публикации

Functional fiber felt covered by transition metal oxide nanomaterials and preparation method thereof

Номер: CN103215748A
Принадлежит:

The invention belongs to the technical field of nano-catalyst, in particular to a functional fiber felt covered by transition metal oxide nanomaterials and a preparation method thereof. The functional fiber felt comprises transition metal nano-particles and carbon fiber, wherein the transition metal nano-particles are uniformly distributed on the surface of the carbon fiber; and the particle size of the transition metal nano-particles is 40-70 nanometers, and the particle size of the carbon fiber is 0.8-1.3 micrometers. The preparation process comprises the following steps: preparing a blended spinning solution; carrying out high-voltage electrostatic spinning to obtain a nano-fiber felt; and calcining the nano-fiber felt in the N2 weak reducing atmosphere. The preparation method is simple, the cost is low, the repeatability is good, and the preparation method is easily industrialized. The prepared metal oxide nanomaterial fiber felt can be used as a lithium-air catalytic layer to enhance ...

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26-09-2012 дата публикации

LED (light emitting diode) street lamp device

Номер: CN102691952A
Принадлежит:

The invention belongs to the technical field of LED (light emitting diode) light sources, in particular to an LED street lamp device. The LED street lamp device mainly comprises a vacuum heat pipe bracket radiator, a heat exchange plate, an LED light source module, a light distribution module, a drive power supply module and a main lamp post, wherein one end of the vacuum heat pipe bracket radiator is closely attached to the LED light source module through the heat exchange plate and serves as a hot end, the other end of the vacuum heat pipe bracket radiator, far from the LED light source module, serves as a cold end, the cold end is higher than he hot end, a liquid working medium is filled in a pipe of the vacuum heat pipe bracket radiator, wherein fins can be welded on the outer wall of the vacuum heat pipe bracket radiator so as to expand the cooling surface. According to the invention, the cooling problem of the high-power LED light source module is effectively solved, the cost of the ...

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07-11-2012 дата публикации

Post-treatment method of fluorescent powder for lamp

Номер: CN102766459A
Принадлежит:

The invention belongs to the technical field of a light source and particularly relates to a post-treatment method of fluorescent powder for a lamp. According to the post-treatment method disclosed by the invention, reactive etching is carried out on the surface of the fluorescent powder by utilizing a mixed solution of ammonium fluoride and other acids so as to fully etch surface defects and passivate the surface. The post-treatment method comprises the specific steps of: etching a fluorescent powder surface by the mixed solution of the ammonium fluoride and the other acids, and filtering and separating out the fluorescent powder from the mixed solution; then respectively washing by de-ionized water and alcohol; and finally, drying and dispersing. The fluorescent powder processed by the post-treatment method disclosed by the invention has good dispersity and transparency. The fluorescent powder is used for preparing a white-light LED (Light Emitting Diode); with the adoption of the fluorescent ...

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25-07-2012 дата публикации

Surface modifying method for improving surface power function of indium tin oxide transparent conductive film

Номер: CN102610765A
Принадлежит:

The invention belongs to the technical filed of conductive thin films, in particular relates to a surface modifying method for improving the surface power function of an indium tin oxide transparent conductive film. The surface modifying method comprises the following steps: a large volume of plasma, containing oxygen, chlorine, or fluorine strong electric negative elements, is generated in a vacuum chamber in a radio frequency or microwave discharge excitation way; sheet glass coated with an indium tin oxide (ITO) thin film is placed on a metal substrate bench which is dipped in the plasma; high voltage negative pulses are applied on the substrate bench, thus forming a negative voltage sheath layer between the ITO thin film and the plasma; oxygen ions are accelerated by an electric field to move toward the surface of the ITO thin film in the sheath layer; and high-energy oxygen ions are injected to the surface of the ITO thin film and reserved in a surface layer of the ITO thin film, so ...

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12-09-2012 дата публикации

Method for modifying surface morphology of fluorescent powder for lamp

Номер: CN102660285A
Принадлежит:

The invention belongs to the technical field of light sources and particularly discloses a method for modifying surface morphology of fluorescent powder for a lamp. The method reactively etches the surface of the fluorescent powder by using a mixed solution of hydrofluoric acid and nitric acid in order to change the surface morphology of the fluorescent powder and comprises the following specific steps: etching the surface of the fluorescent powder by using the mixed solution of the hydrofluoric acid and the nitric acid; then, filtering and separating out the fluorescent powder from the mixed solution; next, washing by using deionized water and alcohol respectively; and finally, drying and dispersing. The treated fluorescent powder is smooth in surface and free of corners, so that the dispersion and the transparency of the fluorescent powder are improved. When the fluorescent powder is used for manufacturing a white light LED (light-emitting diode), the back-scattering rate can be reduced ...

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10-04-2013 дата публикации

LED road lamp device

Номер: CN103032778A
Принадлежит:

The invention belongs to the technical field of solid-state lighting and particularly relates to an LED (Light Emitting Device) road lamp device. The LED road lamp device comprises a heat sink, a clamp groove, a heat pipe, a flange, a casing, an LED light source, a lens and driving power supplies, wherein a semi-circular groove is formed in each of the heat sink ridge and the clamp groove respectively, the radius of the grooves is equal to the outer radius of a base pipe of the heat pipe, one end of the heat pipe is tightly wrapped by the heat sink and the clamp groove through screws, the flange is mounted at the other end of the heat pipe, the LED driving power supplies are respectively arranged on the two sides of the back of the heat sink, the integrated LED light source is directly attached to the front of the heat sink, the lens is covered on the integrated LED light source, and the driving power supplies are covered by the casing from the back side of the heat sink; and a plurality ...

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02-01-2013 дата публикации

Porous cathode coating matrix type miniature solid oxide fuel cell device

Номер: CN102856569A
Принадлежит:

The invention belongs to the technical field of solid oxide fuel cell devices and discloses a porous cathode coating matrix type miniature solid oxide fuel cell device. The fuel cell device is composed of a plurality of single layer cell stacks, which are overlapped and serially connected together, and the single layer cell stacks are connected through a metal net; a plurality of micropipe type solid oxide fuel cells are arranged in a matrix cathode mould to form the single layer cell stacks, and porous cathode coating layers are arranged between the inner wall of the matrix cathode and the single cells. The micropipe type solid oxide fuel cell comprises a porous anode tube, a dense electrolyte membrane and a protection layer located between the electrolyte membrane and the cathode, and the cathode is located on the outmost layer. The single cell utilized in the invention has a micropipe structure, and the structure has good impact capability on the thermal pressure caused by the quick ...

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02-01-2013 дата публикации

Double-hollow anode supported solid oxide fuel cell device with sealed ports

Номер: CN102856568A
Принадлежит:

The invention belongs to the technical field of solid oxide fuel cells and discloses a double-hollow anode supported solid oxide fuel cell device with sealed ports. In the solid oxide fuel cell device disclosed by the invention, a hollow anode with small radius is embedded in the hollow anode with large radius to form a double-anode structure, wherein the gas outlet of the anode tube with small radius is sealed, the gas inlet of the anode tube with large radius is sealed, and the sealing material is dense and airtight; and the inner and outer anodes are isolated and fixed by a metal net. The solid oxide fuel cell device disclosed by the invention greatly improves the flow of the fuel gas in the anode tubes and increases the length of the flow path and the anode passing time of the fuel; meanwhile, the solid oxide fuel cell device effectively increases the collector area of the anodes, increases the contact area of the catalyst and the fuel and improves the energy density of the fuel cell ...

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