Results 51 to 60 of about 14,108 (165)
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT TA18 alloy is an ideal material for piping systems in the aerospace field, the low notch sensitivity and high damage tolerance enhance its engineering application value. However, the complex failure mechanism influenced by strain gradient necessitates further improvement of the service stability for TA18 alloy in practical engineering ...
Xin Du +6 more
wiley +1 more source
, 2005 铁电陶瓷材料,特别是锆钛酸铅(PZT)在众多领域具有广泛的应用前景,影响其推广应用的主要因素是使用过程中外电、力场引起的材料性能的退化。观测铁电电畴及畴变的方法对研究其在外场下性能破坏机理、提高其使用的可靠性和预防其失效具有重要的理论和实际意义。本文比较了不同实验方法和测试技术的优缺点,对铁电陶瓷的电畴观测进行了综述,并简要总结了铁电陶瓷的畴变观测技术研究现状 ...
张颖, 张飒, 程璇
core +1 more source
Public perception of Ghana's Free Senior High School policy: A north–south comparative analysis
Review of Policy Research, Volume 43, Issue 1, January 2026.Abstract Ghana's Free Senior High School (SHS) policy, implemented in 2017, aims to increase access to secondary education, promote equity, enhance educational outcomes, and foster human capital development. This study examines public perception of the Free SHS policy, focusing on the variations between the northern and southern regions of Ghana and ...
Michael K. Dzordzormenyoh +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 以有机肥、保水剂（聚丙烯酰胺PAM、高分子吸水树脂SAP和沃特）为供试材料，通过室内土柱模拟试验，研究有机肥配施保水剂对紫色黏土水分入渗及氮素淋溶的影响。结果表明：有机肥配施保水剂可有效增加土壤的保水保肥能力，是控制土壤水分和养分淋失的有效措施。单施有机肥和有机肥配施保水剂均降低了湿润锋运移深度和入渗速率。与对照相比，单施有机肥和有机肥配施保水剂处理的湿润锋运移深度降低了33.33%~46.49%，入渗速率降低了22.73%~31.82%，累计淋溶液体积降低了1.25%~6.78 ...
蒋美佳 +7 more
doaj
To Ban or Not to Ban: The UK's Hamlet Moment With Farm Antibiotics
Politics &Policy, Volume 53, Issue 6, December 2025.ABSTRACT This article applies the Multiple Streams Framework (MSF) to examine post‐Brexit antimicrobial resistance (AMR) governance in UK agriculture, focusing on the contested regulation of prophylactic antibiotic use in farm animals. The study reveals how Brexit created a structural policy window, yet political and ideological dynamics rendered it ...
George Asiamah
wiley +1 more source
The Analysis of the Characteristics of High Power LED under High-stresses [PDF]
, 2012 半导体照明是目前国家重点扶持的新兴技术，大功率LED是半导体照明的关键器件。目前LED实际寿命和理论寿命(10万小时)仍有不小差距，这是由于器件材料、结构、工艺、封装等环节的缺陷，因此在研究LED新的工艺以及结构的同时，需要对其老化机理进行深入分析。本文主要针对功率型LED在脉冲和大应力条件下的光、电、热特性展开研究，以探索影响其可靠性的因素及老化机理。具体包括以下内容： 1.简单介绍了LED发展历史和现状，并且针对器件可靠性进行了综述分析，结合当前的研究，对LED的失效机理分别作了总结。 2.从光学 ...
薛浩
core
Optimization of IMU-based bending strain solving algorithm and full-scale experimental validation [PDF]
Objective The pipe bending strain identification technology based on an inertial mapping unit (IMU) in-line detector has seen extensive applications in China and abroad.
Jun WANG +7 more
core +1 more source
The Future of AI in the GCC Post‐NPM Landscape: A Comparative Analysis of Kuwait and the UAE
Politics &Policy, Volume 53, Issue 6, December 2025.ABSTRACT Comparative evidence of how two Gulf Cooperation Council (GCC) states translate artificial intelligence (AI) ambitions into post–New Public Management (post‐NPM) outcomes are scarce because most studies focus on Western democracies. To fill this gap, we examine constitutional, collective choice, and operational rules that shape AI uptake in ...
Mohammad Rashed Albous +2 more
wiley +1 more source
The Influence of Tooth Flank Quality and Lubrication Conditions on the Tooth Surface Load Capactiy
Jixie chuandong, 1994 本文研究了同一种材料齿轮在不同表面质量和润滑条件时的失效机理、失效形式及相应承载能力的影响，讨论了如何更准确地控制齿轮润滑状态。
秦国珍, 杨铁军, 韩歌平
doaj
World Water Policy, Volume 11, Issue 4, Page 939-952, November 2025.ABSTRACT This study reviews the status of access to water supply, sanitation, and solid waste management (SWM) services in Uganda, examining the influence of national government policies, institutional frameworks, and financing mechanisms. It employs a mixed‐methods approach, combining qualitative analysis of primary data from key informant interviews ...
Ronald Sakaya +3 more
wiley +1 more source