Results 21 to 30 of about 4,783 (165)

Orbitally Driven Anomalous Thermal Transport Under High Pressure in Gallium Nitride

Rare Metals, EarlyView.
ABSTRACT Extreme conditions such as high pressure offer opportunities for innovative materials design and applications. For over a century, studies on thermal transport in crystals under high hydrostatic pressure have shown that lattice thermal conductivity generally exhibits a monotonic increase with pressure.
Zong‐Hao Yuan, Ai‐Ling Chen, Dong‐Hai Wei, Tian‐Fu Cao, Lin‐Feng Yu, Xiao‐Xia Wang, Hui‐Min Wang, Tao Ouyang, Guang‐Zhao Qin   +8 more
wiley   +1 more source

Bifunctional Competitive Structure of Biomass Carbon‐Derived Metacomposites for Tunable ε′‐Near‐Zero and ε′‐Negative Responses

Rare Metals, EarlyView.
ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang, Yunpeng Qu, Qixuan Zeng, Xiaosi Qi, Yao Liu   +4 more
wiley   +1 more source

Template Engineering of Magnetic Nanoparticles Decorated on Porous Carbon for High‐Performance Multiband Electromagnetic Wave Absorption

Rare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang, Chen Zhang, Wang Yang, Shao‐Xiong Du, Shuang Liu, Jun‐Yan Dong, Bo Long, Pan Yan, Rui Mao, Yong‐Feng Li   +9 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

Undetected cases after implementation of first‐trimester anomaly scan in low‐risk population: insights from the IMITAS study

Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 27-33, January 2026.
ABSTRACT Objective To assess the effectiveness of the first‐trimester anomaly scan (FTAS) performed as part of a centrally steered national screening program in The Netherlands by investigating false‐negative cases with a fetal structural anomaly that was not detected at the FTAS.
K. Bronsgeest, E. E. R. Lust, S. C. E. Zaaijer, L. Henneman, N. Crombag, C. M. Bilardo, R.‐J. H. Galjaard, E. Sikkel, A. K. K. Teunissen, M. N. Bekker, M. C. Haak, Collaborators, A. B. C. Coumans, A. Elvan‐Taşpınar, S. Galjaard, A. T. J. I. Go, E. van Leeuwen, G. T. R. Manten, E. Pajkrt   +18 more
wiley   +1 more source

Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River

Conservation Biology, Volume 39, Issue 6, December 2025.
Abstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Sam Grinstead, Caroline C. Arantes, Kirk O. Winemiller, Leslie C. Kelso‐Winemiller, Jonas Alves de Oliveira, Miguel Petrere Jr, Carlos E. C. Freitas   +6 more
wiley   +1 more source

Performance improvements in complementary metal oxide semiconductor devices and circuits based on fin field‐effect transistors using 3‐nm ferroelectric Hf0.5Zr0.5O2

Rare Metals, Volume 43, Issue 7, Page 3242-3249, July 2024.
Graphical abstract AbstractIn this work, a conventional HfO2 gate dielectric layer is replaced with a 3‐nm ferroelectric (Fe) HZO layer in the gate stacks of advanced fin field‐effect transistors (FinFETs). Fe‐induced characteristics, e.g., negative drain induced barrier lowering (N‐DIBL) and negative differential resistance (NDR), are clearly observed
Zhao‐Hao Zhang, Yan‐Na Luo, Gao‐Bo Xu, Jia‐Xin Yao, Zhen‐Hua Wu, Hong‐Bin Zhao, Qing‐Zhu Zhang, Hua‐Xiang Yin, Jun Luo, Wen‐Wu Wang, Hai‐Ling Tu   +10 more
wiley   +1 more source

Measuring Financial Risks Using Different Frequency Data——Based on Ultra-high Frequency,High Frequency and Low Frequency Data Model [PDF]

, 2011
首先计算了已实现波动率和超高频波动率,然后使用ArfIMA(0,d,0)-SkST模型计算了条件波动,最后对条件波动调整后的收益率进行了拟合并计算出了VAr值。实证结果发现,使用高频数据甚至超高频数据测量金融风险的准确性并不比低频数据高很多,如果选用模型恰当,完全能够使用低频数据得到高频数据的精度。Firstly,this paper calculate the realized volatility and the ultra-high frequency volatility,and then ...
苗晓宇
core  

GIS局部放电外置超高频检测系统

Gaoya dianqi, 2005
研制了宽带和窄带两种超高频外置天线传感器,两种传感器增益均大于1,驻波比在其有效带宽范围内均小于2,均能用于GIS局部放电超高频检测。设计了高性能放大器和半分布参数超高频滤波器,工作频带为300～1000MHz,完全覆盖了两种传感器的工作频带。性能测试表明,传感器和滤波放大器性能优良,频率匹配,能满足超高频信号检测预处理的要求。通过对绝缘子表面金属污染缺陷产生的局部放电信号进行检测研究表明,超高频检测系统能够检测到超高频段微弱的局部放电信号,并能抑制低频段干扰,为后续模式识别的研究打下了基础。
唐炬, 刘明军, 彭文雄, 魏钢, 谢颜斌   +4 more
doaj  

A multi-ring UHF near-field RFID reader antenna [PDF]

A near-field antenna for ultra-high frequency radio frequency identification (RFID) reader with a multi-ring structure and uniform magnetic field was designed.
CHEN Rong, XIE Weihua, YUAN Jiade
core   +1 more source