Results 61 to 70 of about 117,884 (172)

High‐Temperature Stable Narrowband Near‐Infrared Phosphor‐Converted Light‐Emitting Diode Based on Melt‐Grown CsPbCl3: Yb3+ Crystal

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Narrowband near‐infrared (NIR) phosphor‐converted light‐emitting diodes (pc‐LEDs) featuring low full‐width at half maximum (FWHM) and high conversion efficiency are crucial for chemical content evaluation, light therapy, and bioimaging.
Chunshen Li   +4 more
wiley   +1 more source

Molecular Structure of Liquid Crystals and Temperature Dependence of Threshold Voltage [PDF]

open access: yes, 1994
Nematic liquid crystals with fluorine substituent are being attracted for multiplexed active matrix TN-LCDs. Temperature dependence of threshold voltage and physical constants (dielectric constant anisotropy, elastic constant) are measured and ...
女川 博義   +5 more
core   +1 more source

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

氧化锌阀片加速老化试验条件的研讨

open access: yesDianci bileiqi, 1992
讨论了加速老化试验中时间、施加电压、温度等条件;重点讨论了温度的影响,以及控温的依据.认为应以阀片所处环境温度作为试验温度.
胡敏
doaj  

熱力学的物理量としての温度の導入法について [PDF]

open access: yes, 1998
本稿では,国際単位系の基本単位ケルビンで測定される物理量,熱力学的温度の導入のための教程を考察する。この教程では,温度という物理量の存在から出発して,特別な温度である熱力学的温度の定め方,測定方法,単位の選択まで,中等高等科学教科書にみられる各種の導入法を比較吟味しながら,一貫して記述する。そこで,それぞれの導入法では,どこを省略しどこに問題点があるかなどが,あぶり出される。熱力学的温度の理解のために,学習者にとってわかりにくく注意すべき諸点を論述し明らかにする。ここまでの論証に必要な重要項目は ...
Satoshi Taguchi   +3 more
core   +1 more source

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

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  

±500 kV高压直流XLPE电缆温度分布及其影响因素研究

open access: yesGaoya dianqi, 2023
温度分布是直流电缆运维检修的重要参数之一。由于高压直流输电起步较晚,高压直流电缆的研究不如交流电缆丰富、深入,因此对其温度分布影响因素的研究具有重要意义。通过Comsol有限元软件建立二维对称模型,计算±500 kV高压直流XLPE电缆稳态运行时的温度分布,求出适合电缆长期运行的载流量,并从载流量和环境温度两方面研究温度分布变化。仿真结果表明:载流量对温度分布变化具有较大的影响,当环境温度高于15℃时,导体温度约束载流量大小,环境温度低于15℃时,绝缘层最大允许温差约束载流量大小 ...
吴晶晶, 陈丽安, 严有祥, 赵鹏
doaj  

[Material design and temperature field simulation analysis of tumor radiofrequency ablation needle]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022
Chen Z, Cui H, Lu Y, Lang J.
europepmc   +1 more source

Kinetic Study of Oxidation of Zinc Sulfide Pellets I : Analysis based on the Core Model [PDF]

open access: yes, 1983
The oxidation of zinc sulfide pellets was studied by use of a thermobalance at temperatures between 590℃ and 960℃. Assuming that the reaction proceeds in topochemical manner, experimental results were analyzed based on the core model to show the effects ...
伏間 正一   +4 more
core   +1 more source

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