Results 41 to 50 of about 10,412 (122)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
wiley +1 more source
野生动物学报, 2012 中国野生动物疫病监测防控工作尚处于起步阶段,借鉴其他国家相关经验,对加强监测防控管理、提升工作整体水平大有裨益。本文作者通过在意大利的培训和考察,对其疫病管理特点、流行现状、监测防控做法进行分析总结,并针对中国疫病监测防控中的薄弱环节,提出有关对策建议。在策略举措上,应适当借鉴和参考意大利的疫病防控理念、防控策略、部门分工与协作机制、科技支撑、应急处置等方面的典型做法,并宣传普及"同一个健康"理念,完善相关法律规章,健全监测防控体系,加强人员队伍建设和转变疫病监控模式 ...
刘枫 +4 more
doaj
MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials (MAMs), such as high absorption efficiency, lightweight, and environmental stability, making the development of advanced MAMs urgent for both civilian and national defense applications ...
Pan‐Pan Zhou +8 more
wiley +1 more source
Haiyang yu huzhao为更好地保护和开发光唇鱼(Acrossocheilus fasciatus)资源，进行了光唇鱼卵原干细胞提取、冻存和移植研究。结果显示，光唇鱼卵原干细胞呈椭圆形，长径和短径分别为(16.52±0.87) µm、(10.66±0.87) µm。低温冻存光唇鱼卵巢时以10%的DMSO作为保护剂效果最好，从冻存卵巢中提取卵原干细胞的效率可达新鲜卵巢的42.22%±1.02%。以孵化出膜3日龄斑马鱼仔鱼为受体，将提取的光唇鱼卵原干细胞用PKH26荧光染料标记后移植入受体鱼腹腔。荧光显微镜观察显示，移植后1~5 ...
王 宏艳 +7 more
doaj +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.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 +4 more
wiley +1 more source
Zhongguo cuzhong zazhi目的 探讨上海市极端气温与居民脑血管病死亡之间的关联，并探究气温导致脑血管病死亡的滞后效应。 方法 本研究数据来源于上海市疾病预防控制中心的死亡登记信息系统，收集2014年1月1日—2020年12月31日上海市每日的居民脑血管病（包括出血性卒中、脑梗死及脑血管病后遗症3种亚型）死亡资料，其中死亡原因依据根本死因进行编码与统计判定。采用分布滞后非线性模型，在0～21 d的滞后时间范围内，定量估算极端气温暴露与脑血管病死亡的关联效应。极端低温与极端高温分别定义为低于研究期间日平均气温的第2 ...
李琦，晋珊，陈蕾，杨之雨，蔡任之，钱耐思，郑雅旭，虞慧婷LI Qi, JIN Shan, CHEN Lei, YANG Zhiyu, CAI Renzhi, QIAN Naisi, ZHENG Yaxu, YU Huiting
doaj +1 more source
Effects of organized guarding on mortality from human–elephant conflict in northeast India
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Human–elephant conflict (HEC) frequently results in human and elephant mortality, posing major social justice and conservation concerns across Asia and Africa. Although a variety of interventions have been introduced to mitigate HEC, rigorous evaluations of how they affect mortality are practically nonexistent.
Nitin Sekar +6 more
wiley +1 more source
Dianci bileiqi, 2006 参照国家标准并结合防雷经验,针对雷害来源,提出了深圳前湾发电厂主控楼二次系统设备的综合防雷措施。认为,发电厂主控楼防雷首先应根据楼房结构架设一个环行均压等电位接地网;楼房外部防止直击雷应安装接闪器、引下线和接地装置;内部电子设备应安装浪涌保护器（SPD）以降低起源处过电压及过电流。主控室设备的电源及信号系统应安装浪涌保护器及可靠接地;防电磁干扰应安装金属网格屏蔽。采取以上措施后,保证了主控楼的设备安全可靠地运行。
陈创庭
doaj
Shiyou jixie, 2012 在钻浅层塞作业过程中，为了防止出现井喷顶钻事故，研制了井口防顶装置。该装置是根据以最高上顶力和井口装置最低抗内压两者中最低者来选用井下作业井口控制装置的原则进行设计的。中原油田普遍使用350井口，最高耐压35 MPa，钻塞使用Φ114 mm钻头，故设计的防顶装置承受的最低上顶力为364 kN，附加安全系数1.5倍，其承载上顶力为550 kN，能够避免防顶控制过程中上顶力对防顶装置的损坏，确保施工安全。现场应用控制防顶5口井，成功率100%，有效地解决了钻浅层塞施工中井喷防顶的难题。
华宇鹏 +6 more
doaj