Preparation of atomically clean and flat Si(100) surfaces by low-energy ion sputtering and low-temperature annealing [PDF]
, 2003 Si(100) surfaces were prepared by wet-chemical etching followed by 0.3-1.5keV Ar ion sputtering, either at elevated or room temperature. After a brief anneal under ultrahigh vacuum conditions, the resulting surfaces were examined by scanning tunneling microscopy.
J.C. Kim +4 more
arxiv +3 more sources
Nature Communications, 2022 Carbon capture, utilization and storage technology is limited by the need for a separate CO2 capture step. Here, the authors propose a strategy and economic analysis for simultaneous dilute CO2 capture from flue gas and direct electrochemical reduction ...
Kezia Megagita Gerby Langie +13 more
doaj +1 more source
Research on Performance and Mechanism of the NH3-SCR Reaction over Fly Ash-derived Mn-Ce/Zeolite X
Aerosol and Air Quality Research, 2023 Zeolite X was synthesized from fly ash under optimized conditions, which was supported with Mn, Ce, and Mn-Ce respectively. Fly ash-derived zeolite X catalysts exhibited similar catalytic performance as compared with the commercial zeolite X catalyst ...
Weijia Ren +7 more
doaj +1 more source
Research and Practice on Localization of Offshore Wind Turbines
发电技术, 2023 This paper analyzed the localization status of key components and systems in offshore wind turbines such as blades, spindles, electrical systems, and control systems.In view of the localization weaknesses existing in the components and systems of ...
SUN Caixin +6 more
doaj +1 more source
Suppressing the Vortex Rope Oscillation and Pressure Fluctuations by the Air Admission in Propeller Hydro-Turbine Draft Tube [PDF]
Journal of Applied Fluid Mechanics, 2023 For the purpose of automatic generation control (AGC), a portion of the propeller hydro-turbine units in China is adjusted to operate within a restricted range of 75%-85% load using computer-controlled AGC strategies.
H. Wu +9 more
doaj +1 more source
Progress of research on chemical upcycling of plastic waste based on pyrolysis
能源环境保护, 2023 The total production of global plastics is up to 400 million tons per year. Nearly 80% of the used plastics are directly landfilled or dumped in the environment, leading to the generation and release of microplastics, which poses a great threat to both ...
XIE Wen +4 more
doaj +1 more source
Application of the optimised next neighbour image cleaning method to the VERITAS array [PDF]
PoS(ICRC2023)588, 2023 Imaging atmospheric Cherenkov telescopes, such as the VERITAS array, are subject to the Night Sky Background (NSB) and electronic noise, which contribute to the total signal of pixels in the telescope camera. The contribution of noise photons in event images is reduced with the application of image cleaning methods. Conventionally, high thresholds must
arxiv +1 more source
Micro–Nano Water Film Enabled High-Performance Interfacial Solar Evaporation
Nano-Micro Letters, 2023 Highlights Micro–nano water film enhanced interfacial solar evaporator enables a high evaporation rate of 2.18 kg m−2 h−1 under 1 sun. An outdoor device with an enhanced condensation design demonstrates a high water production rate of 15.9–19.4 kg kW−1 h−
Zhen Yu +5 more
doaj +1 more source
Prediction Method of TBM Tunneling Parameters Based on Bi-GRU-ATT Model
Advances in Civil Engineering, 2022 With tunnel boring machines (TBMs) widely used in tunnel construction, the adaptable adjustment of TBM operating status has become a research focus.
Qinglong Zhang +5 more
doaj +1 more source
Influence of carrier effect on Pd/Al2O3 for methane complete catalytic oxidation
Frontiers in Chemistry, 2022 Pd/Al2O3 catalysts modified by different chemical elements (Mg, Si, Ce, and Zr) were tested for methane (CH4) catalytic combustion, and PdO nanoparticles loaded on modified Al2O3 were systematically studied. These conditions assess the carrier effects of
Shengpan Peng +8 more
doaj +1 more source