Results 21 to 30 of about 1,309,292 (165)
Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, EarlyView.Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz +5 more
wiley +1 more source
A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
, 1997 介绍了用USED CARS技术测量对撞式甲烷/空气扩散火焰前滞止区和尾流区的温度分布剖面。在滞止区富甲烷观察到甲烷燃烧前的热解过程；尾流区温度高于滞止区温度，表明在滞止区有未完全燃烧的中间产物存在 ...
赵建荣, 杨仕润, 李春金
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Sodium metal batteries hold significant promise for large‐scale energy storage due to the high theoretical capacity and abundant sodium sources, yet sodium‐metal anodes are hindered by dendrite propagation, unstable solid electrolyte interphase, and poor cycling efficiency arising from uneven Na deposition and volume changes.
Nan Xing +7 more
wiley +1 more source
The Structural Origin of the Amorphous‐to‐Crystalline Transformation in Cu‐Zr Based Amorphous Alloy
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Amorphous alloys (AAs) possess a metastable structure from a thermodynamic perspective and tend to crystallize under external conditions, which in turn alters their material properties. To gain an in‐depth understanding of their crystallization mechanism, this study employed in situ spherical aberration‐corrected transmission electron ...
Yajie Huang +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The protracted incubation time has long been the Achilles' heel of the promising 2LiBH4–MgH2 hydrogen storage system. Instead of the usual route‐creating heterogeneous nucleation sites to hasten MgB2 formation, we shortened both de‐ and re‐hydrogenation incubation periods by steering the Mg transformation itself.
Kai Jia +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The pre‐existing α‐Fe crystals have important effects on the precipitation and growth of nanocrystals and finally determine the comprehensive soft magnetic properties (SMPs) of the nanocrystalline alloys (NAs). In this work, a high content of Cu elements has been added to Nanomet‐type alloys to enhance the gradient heterogeneity in order to ...
Lei Xie +6 more
wiley +1 more source
托卡马克中凯尔文-亥姆霍尔茨不稳定性与密度分布及速度分布的关系 [PDF]
, 1985 近年来,在托卡马克装置实验中观察到等离子体环的密度及环向速度沿半径都有变化。当反平行中性束注入时,密度分布对应空洞型温度(即中心温度低而外侧高),等离子体的稳定性变坏。本文对密变分布和速度分布对等离子体环的凯尔文-亥姆霍尔茨稳定性的影响分别进行了研究,得出,在托卡马克实验参数范围内,密度沿半径的分布会使凯尔文-亥姆霍尔茨稳定性变坏 ...
唐福林
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