Results 1 to 10 of about 7,506 (109)

Exploring metapopulation‐scale suppression alternatives for a global invader in a river network experiencing climate change

open access: yesConservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract Invasive species can dramatically alter ecosystems, but eradication is difficult, and suppression is expensive once they are established. Uncertainties in the potential for expansion and impacts by an invader can lead to delayed and inadequate suppression, allowing for establishment.
Brian D. Healy   +5 more
wiley   +1 more source

Synthesizing habitat connectivity analyses of a globally important human‐dominated tiger‐conservation landscape

open access: yesConservation Biology, Volume 36, Issue 4, August 2022., 2022
Abstract As ecological data and associated analyses become more widely available, synthesizing results for effective communication with stakeholders is essential. In the case of wildlife corridors, managers in human‐dominated landscapes need to identify both the locations of corridors and multiple stakeholders for effective oversight.
Jay M. Schoen   +13 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

open access: yesDevelopmental 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   +6 more
wiley   +1 more source

直流接地极引起的高速铁路综合接地系统直流电流计算

open access: yesGaoya dianqi, 2022
随着我国高速铁路的广泛延伸,直流接地极与高速铁路相接近的情况时有发生。直流接地极入地电流可能会对高速铁路综合接地系统造成影响。为了评估直流接地极对高速铁路综合接地系统的影响情况,文中建立了高速铁路综合接地系统的直流电流分布的分析模型,获得了高速铁路沿线轴向直流电流分布和单位长度泄漏电流密度分布,说明了直流接地极对高速铁路综合接地系统的电腐蚀影响机理,并分析了土壤电阻率、直流接地极距离等因素对电腐蚀程度的影响。研究结果表明,直流接地极对高速铁路综合接地系统有一定的电腐蚀影响 ...
宋伟   +4 more
doaj  

风电场接地系统雷电冲击特性的研究

open access: yesDianci bileiqi, 2020
良好的接地系统对于风电机组的正常运行至关重要。基于风机接地圆环的不等电位模型研究雷电流波头时间与入地点、雷电流幅值、土壤击穿场强、土壤电阻率等因素对风电机组接地系统雷电冲击特性的影响规律以及多年冻土地区通过对接地网敷设垂直接地极的散流效果。结果表明:雷电流经风机接地圆环中心注入时具有更好的散流效果,雷电流波头时间越短,接地导体的电感效应越强烈,风机冲击接地电阻越大;随着雷电流幅值的增加,土壤的火花效应得以加强,风机接地圆环面积越小,冲击接地电阻降低越明显;土壤临界击穿场强越小 ...
姜龙杰   +5 more
doaj  

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

h‐BN/HfO2 Interface‐Enabled Optoelectronic Doping for Low‐Voltage, Reconfigurable MoTe2 Nanoelectronics

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Engineering the semiconductor/dielectric interface is crucial for advancing two‐dimensional (2D) nanoelectronics, where device performance is predominantly governed by interfacial defects and dielectric coupling. Optoelectronic doping based on carrier trapping at the h‐BN/SiO2 interface has enabled non‐volatile and reversible carrier ...
Zhe Zhang   +6 more
wiley   +1 more source

深井型直流接地极散流机理研究

open access: yesDianci bileiqi, 2020
准确计算直流接地装置的散流性能及接地特性是优化设计直流接地极的基础。提出了基于恒定电场理论的直流接地装置性能有限元数值计算模型,针对求解区域和接地导体截面尺寸的差异导致的剖分困难、计算量大的问题,引入"薄壳"理论,在保证计算精度的前提下大大减小了计算量;通过与文献数据对比,验证了该方法的有效性。建立典型结构的深井型接地极模型,计算深井接地极散流过程产生的地中电流密度、电场强度、接地电阻和最大跨步电压等参数;分析电流注入点个数、接地极导体长度、接地极埋深、导体并联根数以及土壤电阻率等因素对接地性能的影响 ...
李景丽, 冯鹏, 栗超超
doaj  

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

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

open access: yesRare 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   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy