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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 12. Отображено 12.
15-08-2023 дата публикации

Process for preparing PTFE hollow fiber membrane based on flat membrane wrapping

Номер: CN116585908A
Принадлежит:

The invention provides a process for preparing a PTFE hollow fiber membrane based on flat sheet membrane wrapping, and belongs to the technical field of hollow fiber membrane preparation, and the process comprises the following steps: step 1, wrapping: wrapping a PTFE flat sheet membrane on the outer wall of the PTFE hollow fiber membrane, step 2, sintering: carrying out heat treatment on the wrapped hollow fiber membrane at 300-400 DEG C, and step 3, modifying, soaking the wrapped and sintered membrane filaments in ethanol, taking out the wrapped and sintered membrane filaments, soaking the wrapped and sintered membrane filaments in a 0.5 wt% PVA solution for 2 hours, taking out the wrapped and sintered membrane filaments, soaking the taken-out membrane filaments in a 10% glutaraldehyde solution for 1 hour, taking out the soaked membrane filaments, cleaning the taken-out membrane filaments, and drying the cleaned membrane filaments to obtain the wrapped and modified PTFE hollow fiber membrane ...

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23-06-2023 дата публикации

Train operation plan integrated adjustment method

Номер: CN116279692A
Принадлежит:

The invention relates to the technical field of high-speed railways, and provides a train operation plan integrated adjustment method. The method comprises the following steps: when sudden line interruption is detected and line interruption time is uncertain, determining at least one constraint model corresponding to any basic data according to each basic data in the current high-speed railway; adjusting the target data in parallel according to constraint conditions for constraining the train working diagram adjustment plan and the motor train unit application adjustment plan in each constraint model, so that the adjusted target data meets the constraint conditions of each constraint model; and according to the adjusted target data, adjusting a train working diagram and a motor train unit application plan of the current high-speed railway. According to the method, the train working diagram and the motor train unit application plan are adjusted in parallel by utilizing the constraint models ...

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11-07-2012 дата публикации

Walking type incremental launching device and bridge incremental launching construction method using same

Номер: CN0102199915B
Принадлежит:

The invention provides a walking type incremental launching device. The device comprises a slide box, a slideway, a translation jack, a jacking jack and a deviation-rectifying jack assembly, wherein the slide box comprises slide box body units and slide box body connectors connecting the slide box body units; the slide box body units are movably connected by bolts; the slide box body units and the slide box body connectors are movably connected by bolts; the slide box body connectors are movably connected by bolts; the slideway comprises slideway body units and slideway body connectors; the slideway body units are movably connected by bolts; the slideway body units and the slideway body connectors are movably connected by bolts; the slideway body connectors are movably connected by bolts;the whole slide box is put on the slideway and is of an up-down structure; the jacking jack is installed in a jacking jack installation barrel on the slideway; the translation jack is installed on a translation ...

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07-04-2023 дата публикации

Amphiphilic polymer modified polyvinylidene fluoride hollow fiber microfiltration membrane and preparation method thereof

Номер: CN115920657A
Принадлежит:

The invention provides an amphiphilic polymer modified polyvinylidene fluoride hollow fiber microfiltration membrane and a preparation method thereof, and belongs to the technical field of hollow fiber microfiltration membranes. According to the invention, the amphiphilic polymer is added into the membrane casting solution, the amphiphilic polymer has a hydrophilic chain segment and a hydrophobic chain segment, and the hydrophilic chain segment can improve the hydrophilic performance of the membrane, reduce the contact angle of the membrane, improve the anti-fouling and anti-blocking capability of membrane filaments, and ensure good water flux under the condition of low aperture. Due to the hydrophobic chain segment, the amphiphilic polymer and polyvinylidene fluoride have good blending performance, the amphiphilic polymer is effectively enriched on the membrane in the membrane forming process, and loss of the amphiphilic polymer in the long-term operation process is reduced. According ...

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14-01-2015 дата публикации

Communication optimizing method for cluster server

Номер: CN104283943A
Принадлежит:

The invention discloses a communication optimizing method for a cluster server. The cluster server comprises multiple processing servers in communication. According to the communication optimizing method, when any processing server receives a task to be processed, the processing server collects the resource usage data of other processing servers in the cluster server; then the processing server corresponding to the task to be processed is selected according to the resource usage data of each processing server; finally, the corresponding processing server is selected after the attribute of the task is judged. According to the method, the pressure condition of each server is collected through an exchange bus, data needing to be transmitted are distributed to the server with the lowest pressure to be processed according to the priority of the exchanged data, and then the purposes of balancing the loads of different cluster servers and improving task processing efficiency are realized.

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23-04-2014 дата публикации

Gamma ray nondestructive inspection cable rope concealed section detection device and method for realizing detection of device

Номер: CN103743766A
Принадлежит:

The invention discloses a gamma ray nondestructive inspection cable rope concealed section detection device. The detection device comprises a gamma ray inspection instrument and a probe detection crawling device formed by a steel structure support and a power drive mechanism, wherein the steel structure support comprises an upper half support and a lower half support, a semicircular front end plate and a semicircular rear end plate; the upper half support and the lower half support respectively consist of a drive screw rod, a guide rod, a pull rod, the semicircular front end plate and the semicircular rear end plate; the upper half support, the lower half support, the front end plate and the rear end plate are connected by bolts so as to form an integrity to surround a rope body; the drive screw rod I and the drive guide rod I of the upper half support are provided with a probe installation bracket for installing of the gamma ray inspection instrument probe; and the drive screw rod II and ...

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28-09-2011 дата публикации

Walking type incremental launching device and bridge incremental launching construction method using same

Номер: CN0102199915A
Принадлежит:

The invention provides a walking type incremental launching device. The device comprises a slide box, a slideway, a translation jack, a jacking jack and a deviation-rectifying jack assembly, wherein the slide box comprises slide box body units and slide box body connectors connecting the slide box body units; the slide box body units are movably connected by bolts; the slide box body units and the slide box body connectors are movably connected by bolts; the slide box body connectors are movably connected by bolts; the slideway comprises slideway body units and slideway body connectors; the slideway body units are movably connected by bolts; the slideway body units and the slideway body connectors are movably connected by bolts; the slideway body connectors are movably connected by bolts; the whole slide box is put on the slideway and is of an up-down structure; the jacking jack is installed in a jacking jack installation barrel on the slideway; the translation jack is installed on a translation ...

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02-04-2014 дата публикации

Device and method for detecting appearance damage of cable anchoring section by means of video detection

Номер: CN103698336A
Принадлежит:

The invention provides a device for detecting the appearance damage of a cable anchoring section by means of video detection. The device comprises a spotlighting source, a single-lens reflex semi-permeable mirror, a single-lens reflex semi-permeable mirror climbing device, an optical imaging system and a high-definition CCD (charge coupled device) image acquisition system, wherein the single-lens reflex semi-permeable mirror climbing device comprises a single-lens reflex semi-permeable mirror installing support, a steel structure support and a power driving mechanism; the steel structure support comprises an upper semi-support, a lower semi-support and a semi-circular front-tail end plate which are in bolted connection with one another to form an integrally surrounded cable body; the single-lens reflex semi-permeable mirror installing support is arranged on a driving screw and a driving guide rod of the upper semi-support, and the single-lens reflex semi-permeable mirror and the spotlighting ...

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07-04-2023 дата публикации

Engine starting control circuit with protection function

Номер: CN115929528A
Принадлежит:

The invention discloses an engine starting control circuit with a protection function. Comprising a power source, a power source negative electrode main switch S1, an ignition starting switch S2, a gearbox neutral position switch S3, a starter M1, an engine protection function normally-open relay K1, a gearbox neutral position response normally-open relay K2, a starter normally-open starting relay K3, an engine electronic control unit N1 and a gearbox control module N2. The ignition starting switch S2 senses the state of the engine electronic control unit N1 and the state of the gearbox control module N2 through the engine protection function normally-open relay K1 and the gearbox neutral position response normally-open relay K2 and is connected with the starter M1 through the starter normally-open starting relay K3, and the gearbox neutral position switch S3 is used for independently controlling the on-off state of the gearbox control module N2. Only when the engine is in a normal state ...

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04-04-2023 дата публикации

Preparation method of hydrophilic polytetrafluoroethylene hollow fiber membrane

Номер: CN115888425A
Принадлежит:

The invention belongs to the technical field of preparation of hollow fiber membranes, and particularly relates to a preparation method of a hydrophilic polytetrafluoroethylene hollow fiber membrane, which comprises the following steps: (1) soaking a polytetrafluoroethylene hollow fiber membrane in absolute ethyl alcohol until the polytetrafluoroethylene hollow fiber membrane is transparent, taking out the polytetrafluoroethylene hollow fiber membrane, and soaking the polytetrafluoroethylene hollow fiber membrane in a PVA hydrophilic mixed solution to obtain a modified polytetrafluoroethylene hollow fiber membrane; (2) selecting a cross-linking agent, preparing a cross-linking agent aqueous solution, adjusting the pH value, and dipping the modified polytetrafluoroethylene hollow fiber membrane obtained in the step (1) into the cross-linking agent aqueous solution; and (3) taking out the polytetrafluoroethylene hollow fiber membrane treated in the step (2), cleaning, and airing to obtain ...

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11-05-2011 дата публикации

Blackboard eraser capable of preventing chalk dust from flying

Номер: CN0102049950A
Автор: Wu Liuyi, Wen Xiaofeng
Принадлежит:

The invention relates to a teaching aid, in particular to a blackboard eraser structure capable of preventing chalk dust from flying. The anti-dust blackboard eraser is characterized in that a soft and elastic anti-dust strip (3) is installed on a bottom plate (2) and three sides of a central felt block (1) of a common and rectangular blackboard eraser; a space is left between the anti-dust strip (3) and the felt block (1), and the height of the anti-dust strip (3) is larger than that of the felt block (1); the anti-dust strip (3) is 4 to 10 millimeters higher than the felt block (1); the space between the anti-dust strip (3) and the felt block (1) is 3 to 10 millimeters; and the anti-dust strip (3) is made of materials such as a cavernous body, rubber, felt or rubber inner tubes of bikes. The blackboard eraser provided by the technical scheme of the invention has the advantages of simple structure, low cost, energy conservation and environmental friendliness, and is convenient to operate ...

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14-05-2014 дата публикации

Hydraulic dragging and idler wheel walking combination cable carrying crane and walking method thereof

Номер: CN103790114A
Принадлежит:

A hydraulic dragging and idler wheel walking combination cable carrying crane comprises a walking mechanism, a steel truss, a steel strand storing-releasing device, a diesel hydraulic pump station, a control system, a lifting jack, a hanging cage and a hanging tool. The walking mechanism is arranged at the two ends of the steel truss. The steel strand storing-releasing device, the diesel hydraulic pump station, the control system, the lifting jack and the hanging cage are arranged in the steel truss. The hanging tool is connected with the lifting jack through the steel strand. A body of the walking mechanism is a mounting frame which is symmetrical on all sides and is made of steel plates. A load converting device is arranged on the body of the walking mechanism in a evenly-distributing mode. An idler wheel of the walking mechanism is in sliding contact with a main cable. A dragging frame is fixedly arranged at either end of the body of the walking mechanism. A dragging jack and a dragging ...

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