Results 41 to 50 of about 93,158 (208)
EPJ Web of Conferences, 2016 The experimental air turbine VT400 is located in hall laboratories of the Department of Power System Engineering. It is a single-stage air turbine located in the suction of the compressor.
Zitek Pavel, Milčák Petr, Noga Tomáš
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Design of personnel positioning system for fully mechanized coal face with low power consumption
Meikuang Anquan, 2023 Most of the existing accurate positioning systems for underground personnel adopt UWB positioning technology, which is based on the layout mode of personnel positioning card + positioning substation to achieve centimeter-level high precision positioning.
Xian CHEN, Shu ZHOU
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Solution of heat removal from nuclear reactors by natural convection
EPJ Web of Conferences, 2014 This paper summarizes the basis for the solution of heat removal by natural convection from both conventional nuclear reactors and reactors with fuel flowing coolant (such as reactors with molten fluoride salts MSR).The possibility of intensification of ...
Zitek Pavel, Valenta Vaclav
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Various methods to improve heat transfer in exchangers
EPJ Web of Conferences, 2015 The University of West Bohemia in Pilsen (Department of Power System Engineering) is working on the selection of effective heat exchangers. Conventional shell and tube heat exchangers use simple segmental baffles.
Pavel Zitek, Vaclav Valenta
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Research on positioning algorithm of electric mine shovel based on UWB technology
Gong-kuang zidonghua, 2020 In the harsh working environment of mines, the traditional cable reeling method cannot guarantee the power supply of electric shovel for a long time, and there are hidden safety hazards in the process of power supply.
GUO Anbin, SU Hongjun, YAN Xiaoheng
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Wireless software upgrade method based on broadcast mode
Meikuang Anquan, 2021 This paper proposes an implementation scheme of wireless upgrade firmware program based on UWB and ZigBee technologies. This method adopts one-to-many networking mode and infinite loop multi-broadcast mechanism to realize the location card batch ...
WANG Fei
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Design of card reading base station for vehicle passenger leak proof identification in coal mine
Meikuang Anquan, 2022 Aiming at the hidden safety problems that identification leakage of cards carried by underground personnel is caused by the excessive movement speed of vehicles and the shielding of vehicle shell and vehicle passenger overload can not be effectively ...
REN Gaojian, DAI Jianbo
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Ultra Wideband (UWB) Multiple Input and Multiple Output (MIMO) Antenna Design : A Review
Andalas Journal of Electrical and Electronic Engineering Technology, 2023 Since the Federal Communication Commission (FCC) issued a license for the 3.1 – 10.6 GHz frequency spectrum for unlicensed radio applications, many papers have been published regarding ultrawideband (UWB) antenna design.
Firdaus Firdaus +2 more
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A Compact Ultra-Wideband Chip Antenna with Bandwidth Extension Patch and Simple Isolator for MIMO Systems for Mobile Handheld Terminals [PDF]
Journal of Electromagnetic Engineering and Science, 2022 A compact ultra-wideband (UWB) chip antenna that has high isolation for multi-input multi-output (MIMO) systems is presented in this paper. The antenna is composed of a chip antenna, a printed circuit board, and an isolator stub.
Jung-Nam Lee +2 more
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Czasopismo Prawno-Historyczne, 2015 Artykuł ten anlizuje prawne i ustrojowe aspekty pierwszej, polskiej powieści fantastycznej autorstwa Michała Dymitra, a zatytułowanej "Wojciech Zdarzyński życia przypadki opisujący" z 1785 r.
Karol Łopatecki
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