Results 141 to 150 of about 67,433 (297)
, 2001 总结了近几年来纳米材料的研究进展，着重从纳米材料的制备、微观结构、力学及热力学性能的研究情况作了一个概述，总结了有关纳米材料的几个研究热点以及分子动力学计算机模拟在纳米材料研究中的应用 ...
刘曰武, 周富信, 文玉华
core
Lessons learned from screening potential other effective area‐based conservation measures
Conservation Biology, EarlyView.Abstract Other effective area‐based conservation measures (OECMs) are sites that deliver effective biodiversity outcomes irrespective of their management objectives. These areas are widely expected to play an important role in efforts to protect 30% of Earth by 2030.
Carly N. Cook +15 more
wiley +1 more source
Gaoya dianqi, 2005 针对阻抗定位法所存在的问题,回顾了高压输电线路行波测距装置的发展历史,介绍了目前国内研究进展。讨论了目前的故障测距装置中的传感器、高速数据采集、GPS同步单元等几个关键部分的研究情况,同时也对它们今后的发展与改进提出了自己的看法。根据现场调研的情况对装置在实际运行中遇到的一些问题进行了总结,并给出了解决办法。同时也对输电线路行波故障定位装置的发展提出了建议与展望。
方力谦, 李晓明, 黄斌
doaj
Investigation of the Role and Mechanism of Rapamycin on Senile Osteoporosis via Osteocyte Autophagy [PDF]
, 2016 背景：老年性骨质疏松症患病人数逐年攀升，已成为严重的公共卫生问题。最新研究表明：骨细胞通过调节成骨细胞和破骨细胞的功能，从而主导骨重建。随着年龄增长，骨细胞凋亡增加，数目减少，导致骨代谢紊乱。细胞自噬是一种重要的生理机制，可以协助维持骨细胞活性。研究表明，因年龄增加而导致的骨细胞自噬功能障碍与老年性骨质疏松症的发病密切相关。因此，本课题以骨细胞自噬为切入点，选取经典的自噬诱导剂雷帕霉素，探究其对于老年性骨质疏松症的作用及可能机制。 方法：将52只24月龄SD大鼠随机分为雷帕霉素组和对照组 ...
罗德庆
core
Conservation Biology, EarlyView.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source
野生动物学报, 1995 世界狼的研究和保护进展高中信，张洪海，黄守华，郑开红（东北林业大学）（哈尔滨市园林处）（黑龙江省人才交流中心）我国对狼的研究我国对狼（Ｃａｎｔｓｌｏｐｕｓ）的研究过去是比较粗仿的，只是近些年来才对狼进行比较科学的研究。１９３９年，卢卡什金在《北满野生...
高中信 +3 more
doaj
Hobbyist preferences for pet freshwater turtles
Conservation Biology, EarlyView.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 1990 本文介绍我室过去10年对EBV特异性酶类及其抗体的研究进展。主要方向为:①EBV特异性DNase抗体(EDAb)血清流行病学及其在鼻咽癌(NPC)早期发现中的作用。②EDAb测定技术的进展。③NPC组织中的EBV-DNase及EBV-DNA多聚酶的研究。应用情况表明EDAb检测在NPC早期发现中具有较高的灵敏度及特异性。NPC组织中的EBV-DNase及EBV-DNA多聚酶的研究可能对NPC的病毒病因的研究有所助益。
黄迪
doaj
In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle
Conservation Biology, EarlyView.Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla +4 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch +6 more
wiley +1 more source