Results 31 to 40 of about 16,129 (119)

Changing trends in prenatal screening and treatment of cytomegalovirus infection in France: 7‐year national cohort study (2017–2023)

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 756-763, June 2026.
ABSTRACT Objectives Cytomegalovirus (CMV) is the leading cause of congenital infectious neurosensory impairment. We aimed to present national epidemiological data on maternal CMV infection during pregnancy in France, focusing in particular on primary infection in the periconceptional period or first trimester, and to assess the impact of changes in ...
P. Coste‐Mazeau   +176 more
wiley   +1 more source

A more‐than‐human political ecology of Indonesian songbird trade

open access: yesConservation Biology, Volume 40, Issue 3, June 2026.
Abstract Since its inception, conservation science has considered wildlife trade a problem. In focusing on conservation outcomes, conservationists almost completely ignore the welfare of traded animals and plants and the harms they endure. We developed a political ecology approach that incorporates the interconnectedness of people with animals and ...
Sicily Fiennes   +9 more
wiley   +1 more source

Boosting Thermoelectric Performance of Cu3SbSe4‐Based Diamond‐Like Compounds via Multi‐Scale Microstructure Engineering

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Harnessing the potential of thermoelectric technology to convert waste heat into electricity, this study sought to enhance overall energy utilization efficiency and contribute to sustainable development through the advancement of environmentally friendly direct‐conversion materials.
Wenying Wang   +8 more
wiley   +1 more source

Advancements and Applications of 3D Printing Techniques and Novel Materials in Soft Robotics for Medical Devices

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Additive manufacturing, commonly referred to as three‐dimensional (3D) printing, provides the geometric freedom and multi‐material integration needed to build soft medical robots for minimally invasive interventions, prosthetics, and rehabilitation.
Yao Wang   +5 more
wiley   +1 more source

±1100kV特高压直流换流站直流场雷电侵入波过电压研究

open access: yesDianci bileiqi, 2016
目前±1 100 kV特高压直流系统还没有工程实际,但直流电压由±800 kV提高到±1100 kV后,±1 100 kV直流换流站直流场防雷可能会面临一些新问题。例如线路进线段杆塔比±800 kV更高,绕击和反击电流会更大,导致直流换流站直流场雷电侵入波过电压也会更高,而受设备制造、运输能力和高度的限制,换流站设备的内外绝缘水平并不是按比例线性增大的,这样对±1 100 kV直流换流站直流场的避雷器布置和保护水平提出了更严格的要求。本文依托准东-重庆±1 100 kV直流输电工程 ...
万磊, 范冕, 何慧雯
doaj  

无源型直流转换开关在金属回线柔直电网中的应用分析

open access: yesGaoya dianqi, 2020
直流转换开关是常规高压直流输电系统中重要设备之一,在采用金属回线的柔性直流电网中,无源型直流转换开关同样可以得到应用。由于柔性直流电网运行方式较常规端对端直流输电系统更为复杂,需要对直流转换开关的具体工况进行分析研究。文中对直流转换开关在金属回线柔性直流电网中的配置方案和运行工况进行了分析研究,通过建立转换/开断回路的数学模型,分析得出了直流转换开关关键工况的筛选依据;通过PSCAD/EMTDC仿真软件搭建仿真模型,验证了该筛选依据的正确性,为柔直电网用直流转换开关的设计提供依据。
王浩, 王杰峰, 任军辉, 李璐
doaj  

A Review on Cracking in Laser Additive Manufacturing of Nickel‐Based Superalloys: Types, Formation Mechanisms, and Suppression Strategies

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin   +9 more
wiley   +1 more source

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

open access: yesRare 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   +9 more
wiley   +1 more source

南方电网所辖换流变压器直流偏磁数据分析

open access: yesGaoya dianqi, 2017
南方电网所辖直流输电工程能源落点多集中在珠三角地区。随着新建直流输电工程陆续投运,接地极入地电流对换流变直流偏磁影响较为突出。针对珠三角地区各接地极与换流站的地理位置现状,探讨了入地电流导致地电位升高原理,分析了直流偏磁产生机理和导致的危害。为掌握和解决运行中换流变遭受的直流偏磁风险,基于换流变网侧中性点暂态录波原始数据,计算了各换流站直流偏磁电流大小。计算和统计结果表明,随着接地极入地电流增大,换流变网侧中性点直流偏磁电流也呈现增大趋势。其中,从西换流站换流变受直流偏磁影响较为严重 ...
刘青松   +4 more
doaj  

Two decades of changes in the global network of illegal wildlife trade

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Understanding how illegal wildlife trade (IWT) has changed over time is fundamental for biodiversity conservation; however, knowledge of the network remains limited. We used TRAFFIC's IWT dataset, legal trade data from the CITES legal wildlife trade database as a benchmark, and network analysis to identify changes in IWT from 2000 to 2022. The
J. H. Tow   +5 more
wiley   +1 more source

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