Results 91 to 100 of about 30,768 (254)
Conservation Biology, EarlyView.Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero +5 more
wiley +1 more source
Guangtongxin yanjiu, 2010 多业务区分是差异化性能保证和网络安全监控的基础。基于业务峰值速率的特征能实时实现多业务类属区分,文章根据业务区分速率界值与链路负载率之间的相关性,分别提出了静态业务区分和动态业务区分方法,能够在实时链路状态下将多业务动态区分为实时和非实时业务。基于C++编程仿真验证了业务区分方法的可行性及简易性。
杨永杰, 隋会静, 包志华
doaj
Gaoya dianqi, 2021 相变冷却技术逐渐成为高压功率电力电子器件散热瓶颈的解决方案。但在高压应用场景中,由气泡引发的绝缘问题需要重点关注。针对相变冷却的沸腾特征,掌握制冷剂液态、气态以及两相态的绝缘特性是开展相变冷却技术绝缘分析的基础,而现有研究尚没有系统性的制冷剂多相态绝缘特性测试方法。因此,文中研制了用于制冷剂多种相态工况的绝缘实验装置,首次实现了低沸点液体蒸汽的介电强度测试,进而提出了制冷剂蒸汽及两相态环境的击穿实验方案。利用FC-72制冷剂,对其液态、气态及两相态展开了系统性的击穿特性研究,获得了FC ...
莫申扬 +5 more
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Threats to and management of Natura 2000 protected areas relative to agricultural practices
Conservation Biology, EarlyView.Abstract The Natura 2000 (N2K) network combines biodiversity protection and socioeconomic targets. Human activities, such as agricultural practices, can affect biodiversity in N2K sites in diverse ways. Limiting activities with negative impacts while enforcing land management that supports biodiversity is crucial for effective conservation.
Giorgio Zavattoni +7 more
wiley +1 more source
脂联素启动子基因多态性和脂联素水平与高血压及并发症的相关性研究
Zhongguo shiyan zhenduanxue, 2008 目的观察血清脂联素（APN）水平及APN基因启动子区域单核苷酸多态性（SNP）频率与高血压（HP）及其合并症间的相关性,探讨脂联素基因（aPM1）多态性与HP及合并症间的遗传危险因素。并确立一种高效、准确、经济的检测APN基因实用筛查方法,供临床检测应用。方法对单纯HP组（1组）、HP合并T2DM（HP-T2DM）组（2组）、HP合并冠心病（H-CHD）组（3组）、HP合并肾病（HP-NE）组（4组）和对照组（5组）分别测定空腹血清APN及生化指标。采用变性高效液相色谱（DHPLC）技术 ...
贾玫 +5 more
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Molecular Cytogenetic Studies on Haliotis diversicolor diversicolor, H. discus hannai and the interspecific hybrid [PDF]
, 2016 近年来鲍类养殖存活率急剧下降，种质退化和大规模疾病的发生成为重要原因。为此，开展基础研究迫在眉睫，对遗传背景的研究已成为解决实践问题的前提。本研究以杂色鲍(Haliotisdiversicolordiversicolor)与皱纹盘鲍(H.discushannai)及其杂交子代为实验材料，应用荧光原位杂交（Fluorescenceinsituhybridization，FISH）技术和基因组原位杂交（Genomeinsituhybridization，GISH）技术对它们的染色体进行研究 ...
刘圆圆
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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
Zhongguo shiyan zhenduanxue, 2007 目的采用PCR-CTPP技术,检测中国浙南地区白细胞介素-2（IL-2）基因-330位的多态性,并分析其可能的临床应用。方法针对IL-2基因-330（T/G）多态性设计两条序列特异性引物,结合两侧引物,在同一反应管中进行PCR。对PCR条件进行优化,并与测序结果进行对比。在此优化条件对101名体检个体的DNA进行IL-2基因多态性分析。结果通过条件优化,PCR-CTPP（polymerase chain reaction with confronting two-pair primers）可以区分IL ...
杨丽红 +4 more
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Creativity Screening of Product Innovation Based on Meta-synthesis Methodology [PDF]
, 2016 科学技术的迅猛发展、网络化以及经济全球化时代的到来，使得产品创新成为企业在激烈的国际环境中竞争的重要手段。从企业生产经营的流程来看，相对于生产和营销阶段，新产品开发中从创意产生到具体的创新方案提出的产品创新阶段，还没有实现科学化、工程化的管理和信息系统的支持。因此，单独对此阶段进行研究十分必要。本文将产品创新分为了产品需求、产品创意、产品设计、产品论证和产品评估阶段。并提出在对各阶段的复杂性进行分析的基础上，利用综合集成方法理论，根据各阶段需求和目标的不同，有针对性地提出解决方法 ...
廖容
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Lessons from an eradication under multiple constraints of an island rat population of record density
Conservation Biology, EarlyView.Abstract Invasive rats threaten island biodiversity, disrupting ecosystems and endangering native species. Although rat eradication has succeeded on many islands, tropical islands present unique management challenges. Strict regulations and financial constraints on some tropical islands further limit proven eradication methods, complicating rodent ...
Tatiane Micheletti +7 more
wiley +1 more source