Results 71 to 80 of about 52,444 (177)

Recent Advances in Chemical Bath Deposition of Electron and Hole Transport Layers for Perovskite Solar Cells and Modules

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of high‐efficiency, stable, and scalable perovskite solar cells/perovskite solar modules (PSCs/PSMs) highly depends on the performance and cost‐effectiveness of functional layers such as electron transport layers (ETLs) and hole transport layers (HTLs).
Baochang Wang   +11 more
wiley   +1 more source

温湿度对户外设备凝露现象的影响研究

open access: yesGaoya dianqi, 2018
户外设备长期工作在高温高湿、低温高湿等情况下,极易形成凝露,危害电路设备的正常运行。针对上述现象,文中在人工环境气候室内搭建了真型开关柜凝露试验系统,记录了不同温差及相对湿度条件下凝露形成时间,并测量了未形成凝露时的柜体内壁温度。结果表明:凝露形成时间是由温差和相对湿度共同影响的,当相对湿度不变时,温差越大,凝露形成时间越短;而当温差不变时,相对湿度越高,凝露形成时间也越短;并且,形成凝露的露点温度始终高于物体表面温度。最后,提出可通过减小温差 ...
郭沁   +4 more
doaj  

[A case of high-temperature steel bar penetration injury from scrotum to buttocks]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022
Zheng SQ, Miao YL, He LR, Wang BY.
europepmc   +1 more source

Using porous metals to enhance heat transfer in phase change materials (PCMs) [PDF]

open access: yes, 2011
Heat transfer enhancement mechanism of Phase Change Materials (PCMs) by high-porosity metal foams was investigated in this study. The Darcy-Brinkman-Forchheimer modified flow model was employed in the numerical simulations to consider the non-Darcy ...
Tian, Y. (Yuan), Zhao, Changying
core  

Excellent Comprehensive Electromechanical Properties in PZT‐Based Hard High‐Temperature Piezoceramics

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan   +10 more
wiley   +1 more source

Behaviors of Work materials on Hot machining [PDF]

open access: yes, 1956
Both remarkable prolongation of life on the tool edge and considcrable decrease of cutiing force at the tool-chip interface must be satisfied for increase of work efficiency.
村中 利吉, 高辻 雄三
core   +1 more source

Regulating TGO Nucleation and Growth of MCrAlX Coatings via Femtosecond Laser Remelting: The Role of Reactive Elements in the Oxidation Resistance

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian   +7 more
wiley   +1 more source

水稲の登熟期の高温条件下における背白米および基白米の発生に関する遺伝解析 [PDF]

open access: yes, 2011
筑波大学University of Tsukuba博士(農学)Doctor of Philosophy in Agricultural Science2010【要旨 ...
89209, 田畑, 美奈子
core   +1 more source

The Microstructure Evolution and Mechanical Properties of (FeCoCrNi)100‐x(AlCu)x High‐Entropy Alloys

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT This study systematically investigates the effects of AlCu addition on the microstructural evolution and mechanical properties of (FeCoCrNi)100‐x(AlCu)x (x = 0, 5, 10, 15, 20; at%) high‐entropy alloys (HEAs). The results reveal that the microstructure evolves from coarse equiaxed to refined equiaxed, dendritic, and ultimately dual‐phase ...
Shunfu Xie   +7 more
wiley   +1 more source

水平井注蒸汽测试井口防喷密封装置

open access: yesShiyou jixie, 2012
为解决水平井注蒸汽测试中高温高压下动密封和连续管注入头超温问题,成功研制了水平井注蒸汽测试井口防喷密封装置。该装置采用二级密封及长密封段自密封方式,采用耐高温氟橡胶、碳纤维及钢垫的组合形式做密封件,采用耐350 ℃高温导热油自动控制加压密封件,采用水循环冷却管给连续管、密封系统降温,可确保起下时注入头不超温和施工安全。在测试起下过程中,2口水平井井口注汽压力均在13 MPa以上,井口防喷密封装置未发生蒸汽泄漏,注入头处温度低于120 ℃,完全可以满足高温高压下用连续管测试施工要求。
吴国伟   +4 more
doaj  

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