Results 111 to 120 of about 106,323 (223)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng +7 more
wiley +1 more source
Dianci bileiqi, 2019 为了解双端接地时影响二次电缆芯线-屏蔽层电位差的各参数作用大小,及其各参数与芯线-屏蔽层电位差之间的线性程度,通过Matlab编程对电缆芯线-屏蔽层电位差进行计算分析,将二次电缆芯线-屏蔽层电位差作为目标函数,在函数定义区间内进行各个参数灵敏度分析。计算表明:接地网导体间距参数灵敏度较大,对芯线-屏蔽层电位差的影响作用最强,两者变化情况呈非线性关系,是优化设计的主要考虑因素;地网边长、电缆长度的参数灵敏度系数相对较小,可以在合理的范围内改变这两个参数进行优化,但效果不大;土壤电阻率参数灵敏度较小,芯线 ...
孔深, 姜龙杰, 李承阳, 张毅
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He +9 more
wiley +1 more source
Rare 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
Zhongguo shiyan zhenduanxue, 2018 目的确定老年人群网织红细胞常见参数的参考区间,为贫血等相关疾病的临床诊断提供依据。方法收集2018年3月-2018年5月吉林大学中日联谊医院体检中心60-90周岁正常老年体检者静脉血492例,应用Sysmex XN-A1全自动血液分析仪检测网织红细胞相关参数,并确定参考区间。结果在本组样本的各项参数中,除MFR男性组近似呈正态分布外,其他均为偏态分布,并且离散程度比较大。60岁以上老年人群RET%参考区间男性为0.10%-2.94%,女性为0.95%-2.81%;RET#(*109)参考区间为41.3 ...
石宇, 金玲, 杨天时, 谢风
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Recently, cobalt/nitrogen co‐doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate (PMS) and have been applied to advanced oxidation processes for environmental remediation. However, their recyclability and reusability remain major barriers to practical application.
Wen‐Kai Zhu +11 more
wiley +1 more source
Dianci bileiqi, 2017 为了提高线路绝缘子在重风沙环境下的绝缘性能,最大限度发挥新型空气动力绝缘子的防污特性,基于绝缘子基本结构,提出了4个伞裙结构参数,并针对这些结构参数进行了基于流体场特性的优化设计仿真。4个伞裙结构参数作为优化设计输入参数,上层伞裙下方的矩形截面平均空气流速作为输出参数,分别以上层伞裙2个参数和下层伞裙2个参数各为1个影响因子组合,利用ANSYS Workbench平台进行流体力学计算和响应面优化设计。结合其他设计要求、经验和响应面优化结果,新型空气动力防污绝缘子外形结构的参数建议值可选取 ...
刘世涛 +5 more
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一种快速高鲁棒性变压器铁心Jiles-Atherton磁滞模型参数辨识方法
Gaoya dianqi, 2020 Jiles-Atherton（J-A）模型是变压器剩磁与励磁涌流计算的重要方法,但在使用中存在着参数辨识的难题。文中从参数辨识的公式法、遗传算法、Nelder-Mead（NM）单纯形算法原理及各自特点出发,提出一种综合运用公式法和两种优化算法对实测磁化曲线进行参数辨识的方法。算例分析结果表明,该方法对于经典JA模型参数识别具有较高的精度,在误差影响下体现出良好的鲁棒性,是一种快速、有效的J-A模型参数辨识方法。
刘力卿 +5 more
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Rare 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
Gaoya dianqi, 2004 引入“名义频率”和“调整系数”等参数作为量化依据,提出了一种现场调整工频串联谐振试验装置参数配合的工程计算方法,并已通过了实验室试验及现场参数配合示例的验证。
闫永利, 闫军
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