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适用于直流配电网故障选线的电力电子变压器分步闭锁方案 [PDF]

, 2023
级联H桥型电力电子变压器（power electronic transformer with cascaded H-bridge，CHB-PET）是柔性变电站的重要组成设备之一，在直流配电网中具有重要作用。当CHB-PET低压直流侧发生双极短路故障后，故障电流上升速度快且幅值较高，易导致电力电子器件迅速闭锁，使低压直流电网保护难以准确获取故障信息。针对CHB-PET低压侧多分支直流配电网，提出一种基于PET分步闭锁的故障穿越策略。当检测到PET低压侧直流系统故障后 ...
于弘洋, 周丁, 刘宗烨, 郭勇帆, 赵雨菲, 郑涛   +5 more
core   +2 more sources

直流故障引发直流外送系统新能源脱网问题研究 [PDF]

, 2023
含高比例新能源的直流外送系统由于送端发电设备支撑能力薄弱，在直流故障发生后新能源发电设备面临着过电压脱网风险。为了防止新能源脱网事故的发生，首先建立新能源直流外送系统仿真模型分析新能源机端暂态过电压形成机理，其次根据无功传输规律分析常规机组、调相机、电气距离等因素对新能源脱网的影响，定量分析常规机组的电压调节灵敏度，在此基础上利用新能源短路比指标对新能源脱网情况进行量化分析，最后根据分析结果提出了提高短路容量、提高风机高压穿越能力等预防直流故障后新能源脱网的策略 ...
王雷, 严欢, 宋云亭, 袁性忠, 田浩, 曹昊   +5 more
core   +2 more sources

Hotspots of zoonotic disease risk from wildlife hunting and trade in the tropics 野生动物狩猎和贸易引发人畜共患病风险的热带热点地区

Integrative Conservation, Volume 2, Issue 4, Page 165-175, December 2023., 2023
There is a lack of knowledge of which species and areas have a high risk of zoonotic disease spillover due to wildlife hunting and trade. We combined maps of hunting pressure, recent data sets on human‐shared pathogens, and trade volumes for 614 mammalian host species to map zoonotic disease risk from wildlife hunting and trade pantropically.
Jacqueline Choo, Le T. P. Nghiem, Serene Chng, Luis R. Carrasco, Ana Benítez‐López   +4 more
wiley   +1 more source

Successful surgical removal of a pheochromocytoma in a mare via trans‐costal approach

Equine Veterinary Journal, Volume 55, Issue 6, Page 1012-1020, November 2023., 2023
Abstract Background Pheochromocytomas have been previously reported in horses, but successful antemortem diagnosis and surgical removal without recurrence of clinical signs have not been described. Objective To report the clinical presentation, diagnostic evaluation, surgical technique, anaesthetic management and post‐operative care of a mare diagnosed
Thomas J. O'Brien, Lynn M. Pezzanite, Elizabeth V. Acutt, Allison C. Vilander, Diana M. Hassel, Rachel C. Hector, Dean A. Hendrickson   +6 more
wiley   +1 more source

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua, Wenchong Du, Xiaotian Dai, Meiqin Wu, Xianying Cai, Min Shen, Liping Zhu   +6 more
wiley   +1 more source

Leakage Current Dominated Piezocatalysis by Na(AlSi2O6)H2O Nanobelts: Highly Efficient U(VI) Solidification and N2 Conversion

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalysis has garnered unprecedented research enthusiasm for applications in energy and environmental fields, as it can harvest the tiny vibration energy from the natural environment and convert it into electrical energy to drive catalytic reactions.
Feixue Gao, Ruimin Li, Yusen Han, Ming Fang, Shuo Zhang, Yan Chen, Xiaoli Tan, Hui Chen, Bin Ma, Meiyan Ni   +9 more
wiley   +1 more source

Vertically Oriented Single‐Layer Grains for a Highly Bifunctional Perovskite Photovoltaic Light‐Emitting Device

Rare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The realization of bifunctional perovskite devices integrating photovoltaic (PV) and light‐emitting diode (LED) capabilities requires precisely controlled grain architectures to facilitate dual carrier transport pathways. In this work, sulfaguanidine (SG) molecules were introduced into the perovskite solution to reconstruct the crystallization
Jiong Li, Xiangdong Shi, Yingfan Liu, Jianbo Zhao, Fenghua Chen, Chenghao Duan, Xingxing Gu, Keyou Yan   +7 more
wiley   +1 more source

Crystallization Engineering of GaAs/Sb2S3 Core‐Shell Nanowires for Gain Manipulation of Photodetectors

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Photodetectors, based on GaAs nanowires (NWs), hold significant promise in the fields of high integration micro‐ and nano‐optoelectronics applications because of their outstanding electronic and optical properties. To date, significant efforts have been directed toward enhancing the performance of photodetectors, aiming for high detectivity ...
Yu Hao, Xuan Fang, Deng‐Kui Wang, Zhen Wang, Dan Fang, Yong Wang, Xi‐Yao Fu, Jie Fan, Hai‐Zhu Wang, Yong‐Gang Zou, Xiao‐Hua Wang, Jin‐Hua Li   +11 more
wiley   +1 more source

Gravity‐Driven Inclination Sensor Based on Liquid Metal Interface Migration in Anisotropic Microchannels for Information Transmission and Continuous Surface Topography Scanning

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo, Fei Zhan, Guoqing Wang, Xuedong Qiang, Min Mao, Hongbin Zhao, Lei Wang   +6 more
wiley   +1 more source

The Effects of Working Memory Updating on Chinese Reading Comprehension Among Bilingual Primary School Students

New Directions for Child and Adolescent Development, Volume 2026, Issue 1, 2026.
Background Working memory updating is crucial in bilingual children′s second language (L2) reading comprehension. A robust updating ability is a cognitive key for children to successfully master L2 reading comprehension. Objective This study is aimed at investigating the effect of updating ability on the L2 Chinese reading comprehension among Uyghur ...
Guangxin Li, Zimo Yang, Jiacheng Gao, Nikhat Kaura   +3 more
wiley   +1 more source