Results 51 to 60 of about 6,166 (164)
Vulnerability of tropical fish communities across depth in the central Indian Ocean
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Paris V. Stefanoudis +12 more
wiley +1 more source
Importance of connectivity for carnivore richness and occupancy in fragmented biodiversity hotspots
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Structural connectivity affects wildlife movement between habitat patches, contributing to the persistence of wildlife populations and their resilience to human‐induced and environmental changes. However, its importance to wildlife population persistence remains unclear, particularly in fragmented landscapes, where there are additional co ...
Cindy M. Hurtado +12 more
wiley +1 more source
Dianci bileiqi, 2003 研究了BaTiO3基多层陶瓷电容器（MLCs）直流击穿与温度的关系。测量了从室温到250℃范围内BaTiO3基多层陶瓷电容器的直流击穿场强（BDFs）,通过分析直流预压对BDFs的影响,发现空间电荷的同性效应对MLCs的室温和居里温度区的直流击穿有很大的影响;而在高温区,MLCs的直流击穿主要是热击穿。最后根据结构控制Schottky电导理论,联系热离子反射过程和势垒高度对空间电荷积累的影响,从而得出居里温度区具有极小击穿场强的直流击穿特性与BaTiO3基陶瓷绝缘体相转变导致的势垒高度的增加相一致的结论。
周远翔 +4 more
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热带太平洋海洋叶绿素对
Haiyang yu huzhao关于热带太平洋海洋叶绿素对海表面温度(sea surface temperature, SST)年平均场和年际变率的影响，学术界存在着广泛的争议，模拟结果表现出明显的模式依赖性；且对于季节变化上叶绿素如何影响SST的关注较少。为深入研究热带太平洋叶绿素的气候效应，本文基于区域海洋模式系统(Regional Ocean Modeling System, ROMS)构建了海洋物理-生态耦合模式；通过在敏感性试验中设置不同的叶绿素浓度分布，分析了叶绿素对热带太平洋SST的年平均和季节变化的影响。结果表明 ...
张 雯哲 +5 more
doaj +1 more source
Functional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
Guangtongxin yanjiu, 1982 <正> 用MCVD法制造光纤预制棒时,原料在石英管内发生高温氧化反应,反应温度直接影响原料中各种成份的反应效率,从而直接影响光纤预制棒的质量。在温度控制系统中,调节对象为预制棒的原材料石英管,被调参数为石英管火焰加热区的温度,它们都有自己的一些特点。首先,调节对象是间歇工作的,每一个生产周期包括沉积过程和间歇过程两部分。它们之间倒换频繁,温度差别很大。其次,石英管是由氢氧喷灯移动加热的。火焰加热区,原料反应区都是在移动的。为了适应这些特点 ...
刘世滨, 郑来金, 职廷照
doaj
野生动物学报, 2021 为探究中国科学院西双版纳热带植物园中蝙蝠物种多样性及季节变化对蝙蝠物种保护的重要意义，本研究自2019年1—12月在热带雨林地区进行定期声学监测实验并结合2017—2019年竖琴网、雾网捕获情况，共记录到5科14属32种蝙蝠。其中狐蝠科4种、蝙蝠科12种、蹄蝠科5种、菊头蝠科11种。研究表明该地区蝙蝠科、菊头蝠科蝙蝠具有最高的物种多样性，菊头蝠科蝙蝠具有最高的活动强度。32种蝙蝠均具有东洋界的分布特点，但仍有部分蝙蝠科和菊头蝠科蝙蝠在古北界青藏区分布，表明该地区生物分布具有从亚热带向热带过渡的趋势 ...
曹慧 1 +4 more
doaj
Integrative Conservation, Volume 4, Issue 3, Page 491-502, September 2025.The impact of various restoration strategies on biodiversity and biomass in degraded savannas was evaluated across different elevation gradients. Natural regeneration co‐benefits the increasing in biodiversity and biomass in savannas, while active restoration exhibits altitude‐dependent efficacy and lower biomass accumulation capacity.
Han Zhang +10 more
wiley +1 more source
Research on the Optical Properties and Key Technologies of A Novel Water Jet Guided Laser Processing System [PDF]
, 2009 随着精密加工和超精密加工技术的不断发展，激光与其他加工技术的复合逐渐成为加工制造领域的主流技术。在激光复合加工技术中，激光与水射流复合加工技术，即水导引激光加工技术是激光加工技术发展的一个新方向。与传统激光加工技术相比较，水导引激光加工技术具有加工距离长、热影响区小、无热熔渣和加工效率高等优势，已在微电子、航空制造、机械、医学等加工领域中得到应用。 然而，现有的水导引激光加工技术采用传统聚焦透镜光学系统，不可避免地存在精密调焦、离焦发散角对耦合条件的影响以及聚焦光学系统的像差等问题。为了解决这些问题 ...
叶瑞芳
core
Integrative Conservation, Volume 4, Issue 3, Page 430-441, September 2025.Our study identifies southern China, including mountainous regions and islands, as key areas rich in phylogenetic diversity, and phylogenetic endemism of lizards that are currently under‐protected. Current protected areas however do not adequately cover regions that are critical for preserving the evolutionary history of lizards.
Tao Liang (梁涛) +8 more
wiley +1 more source