Results 81 to 90 of about 59,015 (252)

Characterization of uncertainties in atmospheric trace gas inversions using hierarchical Bayesian methods [PDF]

open access: yes, 2014
We present a hierarchical Bayesian method for atmospheric trace gas inversions. This method is used to estimate emissions of trace gases as well as "hyper-parameters" that characterize the probability density functions (PDFs) of the a priori emissions ...
Fraser, P. J.   +15 more
core   +4 more sources

Low Temperature Site‐Specific Pulsed Laser Annealing of MoS2

open access: yesSmall, EarlyView.
The application of laser pulses, of extremely short duration, is investigated as a potential new method to modify the atomic structure of ultrathin 2D materials for use in the creation of future electrical devices. The process is efficient, offering a site‐specific functionality, where regions of an electronic device that only requires annealing is ...
Nazar Farid   +13 more
wiley   +1 more source

以SF6为背景气体的SF6气体分解特征组分标准物质研制

open access: yesGaoya dianqi, 2016
利用SF6分解组分对GIS绝缘状态进行诊断,必须解决SF6分解特征组分的定性和定量检测的关键技术难题,这直接关系到对设备故障性质和程度判断的准确性。文中采用称量法,研究以SF6为背景气的气体标准物质的制备过程与方法,成功研制了CO2/SF6、CF4/SF6、SOF2/SF6、SO2F2/SF64种标准气体物质,解决了SF6分解特征组分标准气体物质的存储问题,考察了4种气体标准物质的一致性、压力稳定性以及长期稳定性。结果表明:CO2/SF6、CF4/SF6、SOF2/SF6和SO2F2 ...
苗玉龙   +4 more
doaj  

Potential of a neutral impurity in a large $^4$He clusters

open access: yes, 1999
This paper presents an analysis of the motion of an neutral impurity species in a nanometer scale $^4$He cluster, extending a previous study of the dynamics of an ionic impurity.
Lehmann, Kevin K.
core   +3 more sources

Quasi‐BIC and Reflective Mode Coupling Drives SHG Beyond the Q Factor Limit

open access: yesSmall, EarlyView.
An analytical expression is developed to relate second‐harmonic generation to both the resonance Q factor and absorptance. Simulations and experiments on a dual‐resonance 3R‐MoS2 metasurface validate the formula, showing that absorptance engineering provides an effective route to enhance SHG beyond conventional Q‐only design.
Wenkai Yang   +8 more
wiley   +1 more source

Construction of abatement cost curves: The case of F-gases [PDF]

open access: yes
Most of scientific research on Greenhouse Gases (GHG) focuses on CO2 emissions. But non-CO2 gases (mainly F-gases in the form of HFCs, PFCs, and SF6) are more potent at trapping heat within the atmosphere. Currently, F-gases constitute a small proportion
Halkos, George
core   +1 more source

Strategic Spatial Segregation in Silicon Photoelectrodes: Decoupling Catalytic and Optical Functions for High‐Efficiency Solar Water Splitting

open access: yesSmall Structures, Volume 6, Issue 5, May 2025.
A novel spatial segregation strategy for silicon photoelectrodes is demonstrated, where catalyst wires surrounded by tapered microwires effectively decouple competing optical and catalytic requirements. This architectural innovation enables optimal light absorption and catalytic activity while maintaining efficient charge transport, achieving 96.5 ...
Soohyeok Park   +9 more
wiley   +1 more source

Effect of Unit Cell Topology on Dielectric Properties of Periodic Lattice Materials Used for Functionally Graded Insulation

open access: yesHigh Voltage, EarlyView.
ABSTRACT Periodic lattice material (PLM) is an innovative material system capable of rapidly and efficiently constructing functionally graded materials (FGMs). Among various PLM structures, triply periodic minimal surfaces (TPMS) exhibit numerous advantages, making TPMS‐based lattice materials a potential candidate to electrical FGMs.
Zihao Liu   +7 more
wiley   +1 more source

Study on harmless degradation of SF6 using water vapor-synergized Fe2O3-filled catalyst [PDF]

open access: yesAIP Advances
Sulfur hexafluoride (SF6) gas is widely used in high-voltage gas-insulated equipment due to its excellent electrical insulation and arc-quenching properties.
Ying Zhang   +7 more
doaj   +1 more source

Micro Partial Discharge Characteristics of SF6 Under DC Voltage

open access: yesHigh Voltage, EarlyView.
ABSTRACT In gas‐insulated high‐voltage direct current (HVDC) devices, micro partial discharges (PD) caused by micro‐protrusions or surface roughness on conductors or enclosures may not cause immediate insulation system failure due to their weak discharge intensity.
Geng Chen   +4 more
wiley   +1 more source

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