Results 81 to 90 of about 1,511,904 (357)
The US space station and its electric power system [PDF]
The United States has embarked on a major development program to have a space station operating in low earth orbit by the mid-1990s. This endeavor draws on the talents of NASA and most of the aerospace firms in the U.S. Plans are being pursued to include
Thomas, Ronald L.
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Modelling the energy efficiency of microcell base stations [PDF]
, 2011 The power consumption of wireless access networks will become a major issue in the coming years. Therefore, it is important to have a realistic idea about the power consumption of each element in those access networks. In this paper, an energy efficiency
Deruyck, Margot +3 more
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Wafer‐Scale Synthesis of Mithrene and its Application in UV Photodetectors
Advanced Functional Materials, EarlyView.A controlled tarnishing step on the silver surface precedes the solid‐vapor‐phase chemical transformation into silver phenylselenolate thin films. The approach yields crystals exceeding 1 µm with improved in‐plane orientation. Integration on graphene phototransistors demonstrates high photoresponsivity, positioning mithrene as a promising material for ...
Maryam Mohammadi +8 more
wiley +1 more source
Evolutionary growth for Space Station Freedom electrical power system [PDF]
Over an operational lifetime of at least 30 yr, Space Station Freedom will encounter increased space station user requirements and advancing technologies.
Marshall, Matthew F. +2 more
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Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling
Advanced Functional Materials, EarlyView.Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor +5 more
wiley +1 more source
An improved opportunistic group replacement maintenance strategy for wind turbines
Energy Science & Engineering, 2020 In traditional opportunistic group replacement maintenance (OGRM) strategy for wind turbines, the reliability thresholds of different subassemblies are set the same and its two‐step optimization for maintenance cost is diseconomy.
Zhiyong Ma +4 more
doaj +1 more source
Research and application of water light complementary power station [PDF]
, 2022 Liu Xuege +9 more
openalex +1 more source
The space station power system [PDF]
The manned space station is the next major NASA program. It presents many challenges to the power system designers. The power system in turn is a major driver on the overall configuration.
Baraona, C. R.
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Space Station technology planning [PDF]
, 1985 Technological requirements for Space Station design were discussed. The requirements are discussed in relation to the following areas: high voltage arrays; environmental interactions; energy management; power supplies; architecture; and ...
Smylie, R. E.
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Advanced Functional Materials, EarlyView.A roll‐to‐roll exfoliation method is demonstrated that preserves the crystallographic alignment of anisotropic 2D materials over large areas, enabling scalable fabrication of directional electronic and optoelectronic devices. Abstract Anisotropic 2D materials such as black phosphorus (BP), GeS or CrSBr, exhibit direction‐dependent optical and ...
Esteban Zamora‐Amo +14 more
wiley +1 more source