Results 1 to 10 of about 4,642 (117)
Gaoya dianqi, 2021 采用脉冲电子注入式迁移管,对GIS中常见气体成分在低E/N值下的负离子迁移特性进行了研究,研究对象包括:O2、SO2、SOF2、SO2F2和SF6。在所研究E/N值范围内（0.264～1.168 Td）,结果表明:由于避免了传统离子门迁移管技术的电荷损失问题,离子电流信号强度大为提高;所研究气体对应的负离子迁移时间与迁移场强呈线性关系,迁移距离越长,迁移时间变化率越大。采用迁移距离和迁移时间差值法计算出的离子迁移速度,能有效消除离子起始加速阶段速度不稳定对稳定迁移速度的影响 ...
辛忠良 +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2018 采用密度泛函理论的B3LYP方法、微扰理论的MP2方法和自洽反应场(SCRF)理论的smd模型方法，研究了组氨酸分子3种最稳定构型的手性转变机理及水溶剂化效应.发现标题反应有a、b、c 3条通道，对于构型1和2,a是手性碳上的质子先以氨基为桥迁移，b是羟基异构后手性碳上的质子再以氨基为桥迁移，c是以羧基和氨基联合作桥实现质子迁移.对于构型3，a是质子只以氨基为桥迁移，b是质子顺次以羰基与氨基为桥迁移，c是质子顺次以羧基和氨基为桥迁移.计算表明：构型1和2的主反应通道都是b，决速步自由能垒分别为250 ...
WANGZuocheng(王佐成) +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Many existing rubrics for L2 argumentative writing prioritize form‐based linguistic accuracy and complexity while insufficiently addressing substantive argumentative rigor and effectiveness. This limitation is further complicated by cross‐cultural variation in rhetorical conventions and educational practices, which challenge the direct ...
Zihan Xu, Peiyun Liu
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Journal of Sociolinguistics, EarlyView.ABSTRACT This study adopts a transnational raciolinguistic perspective to examine how Chinese international students (CISs) navigate language, race, and identity across borders and contexts. Based on semistructured interviews with 14 CISs, the study highlights that pre‐migration socialization in China influences how CISs perceive and interpret their ...
Gengqi Xiao, Hailing Wang, Jing Yu
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Managing diabetic wounds requires simultaneously addressing their infectious, oxidative, and regenerative impairments. To address this, this study integrates a piezoelectric BiOCl@CuSe heterojunction (PFM‐verified) into an injectable F127/HA hydrogel, creating an ultrasound‐responsive smart dressing.
Jiayan Guo +5 more
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International Journal of Applied Linguistics, Volume 36, Issue 2, Page 1282-1292, May 2026.ABSTRACT Self‐regulated learning (SRL) as a key predictor of language learning has been widely studied, but few studies have examined it from a cross‐linguistic perspective. The present study investigated whether first language (L1) SRL strategy use transfers to second language (L2) SRL strategy use and the conditions under which this transfer occurs ...
Barry Bai, Xuan Zang, Gurpinder Lailli
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The dual challenges of environmental sustainability and rising energy needs underscore the necessity for high‐energy‐density batteries, making lithium–sulfur (LSB) systems with their high theoretical capacity highly attractive. However, the polysulfide shuttle, coupled with inherent kinetic limitations in the sulfur reduction reaction ...
Bingbo Ni +4 more
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Gaoya dianqi, 2011 研究室温硫化（room temperature vulcanization,RTV）硅橡胶涂层染污后憎水性迁移及其影响因素对RTV的应用具有指导意义。笔者以盐和灰的混合物模拟现场污秽,通过静态/动态接触角法表征憎水性,研究了迁移时间、温度、湿度、盐类型、灰类型、盐密、灰密对RTV涂层憎水性迁移速度的影响。结果表明:随着迁移时间的增加憎水性逐渐变好,迁移完全样本的接触角大于洁净样本;随温度增加迁移速度变快,且温度越高速度增加越快;随相对湿度增加迁移速度减慢,迁移所需时间非线性增大;ZnSO4迁移速度最快 ...
徐志钮 +5 more
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