Results 21 to 30 of about 10,665 (164)
Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 为揭示微尺度条件下地表起伏对坡面漫流的影响，通过野外人工模拟降雨试验，在相同降雨历时下，分析了60，90，120 mm/h雨强下单凸起、单凹陷2种单式起伏和凹凸相连、凹凸相间2种复式起伏以及对照组5种微地形对坡面漫流的影响。结果表明：（1）3种雨强下，与光滑组相比，凸起、凹陷以及凹凸组合均会延迟地表初始产流时间，具体表现为对照组 < 凸起组 < 凹陷组 < 凹凸相间组 < 凹凸相连组的趋势；（2）凸起和凹陷的存在均会减小坡面漫流的平均流速，其中凹凸相连坡面平均流速最小；（3）3种雨强下 ...
李志刚 +4 more
doaj
ヤマガタシ マミガサキガワ センジョウチ センタンブ ノ イド イコウ ト チカ スイイ フクゲン [PDF]
, 2004 Keywords : Fan, Ground water, Archeological excavation, Well, Yamagata キーワード：扇状地, 地下水, 考古学的発掘, 井戸, 山形 Summary : More than 200 wells were excavated in the archaeological survey area of about 60,000m~2 in the Futaba-cho Site, Yamagata city.
斎藤 仁, 阿子島 功
core +1 more source
Yttrium Addition Co‐Enhances the Plasticity and Corrosion Resistance of TiB2‐Refined Al‐Mg‐Zn Alloys
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT To address the degradation of corrosion resistance induced by Al‐5Ti‐B grain refiner during the strengthening of Al‐Mg‐Zn alloys, this study innovatively employed a rare earth element yttrium (Y) alloying strategy to achieve synergistic enhancement of mechanical strength and corrosion resistance.
Wen‐Tao Qin +9 more
wiley +1 more source
Dizhen xuebao, 2023 针对2011年提出的两步差法在地震微波异常提取中的不足，提出了改进两步差法，该方法通过使用层次聚类和小波分析两种算法，克服了原方法中未考虑不同地物类型引起的亮温差异、亮温背景场不够稳健等问题，从而使异常结果在空间形态和异常幅度上更加合理，并将该方法应用于2021年5月22日青海省玛多县MS7.4地震的微波异常提取。结果显示，玛多地震前三个月出现了一条长约900 km、增温幅值达12 K的NE向亮温增温条带，与2010年4月14日MS7.1玉树地震前异常特征在空间分布和演化特征上均有很高的相似性。此外 ...
Shanjun Liu +3 more
doaj +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The central challenge in the development of high‐performance electromagnetic wave‐absorbing materials lies in achieving an optimal balance between impedance matching and attenuation characteristics. This is particularly critical for purely dielectric absorbers, where precise tailoring of the real (ε′) and imaginary (ε″) parts of the complex ...
Zhixiao Wang +7 more
wiley +1 more source
Dianci bileiqi, 2014 微地形是影响500 kV输电线路绕击跳闸故障的重要因素之一,基于Google Earth软件研究了微地形因素对500 kV输电线路绕击耐雷性能的影响。首先介绍了基于Google Earth的输电线路KML文件的形成,再根据某网省公司历年500 kV输电线路绕击故障统计信息,将输电线路雷击故障点与沿线微地形相结合,对沿线微地形对雷击选择性的影响进行统计分析,找出故障分布的特点和规律,并详细分析农田水塘、山脊顶部、山坡及山谷地形条件下的典型事故,得出四种微地形因素影响500 ...
李慧奇 +4 more
doaj
Dizhen xuebao, 2019 选取2011—2016年发生的38次震中距大于1 000 km的MW≥7.5地震震后3小时的连续波形资料，利用人工检视方法对这38次地震是否触发了我国台湾地区的非火山型微震颤进行了调查。分析结果显示：这38次地震中有4次远震触发了非火山型微震颤，事件持续300—500 s不等。利用网格搜寻方法对此4次微震颤事件进行了定位，确定震中位于台湾中央山脉南段，震源深度为21—53 km。结合研究区内地球物理观测资料，分析认为是由于远震产生的面波改变了研究区内的瞬时应力，进而导致断层蠕滑触发了微震颤事件。
Yunyun Zhang, Qijia Tang, Jingtang Huang
doaj +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Vanadium oxides are deemed competitive cathode candidates for aqueous zinc‐ion batteries (AZIBs), benefited from their high theoretical capacity and multiple crystalline structures. However, the sluggish reaction kinetics, poor reversibility, and high solubility have hindered the practical application.
Xiaoyu Fan +7 more
wiley +1 more source
Highly Stable CsPbBr3@Cs4PbBr6 Perovskite Fluorescent Nanomaterials for White Light‐Emitting Diodes
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Although halide perovskite nanocrystals exhibit excellent photoelectric properties, their inherent instability greatly limits their practical applications. Here, we report a novel self‐assembly strategy to synthesize highly stable CsPbBr3@Cs4PbBr6 perovskite fluorescent nanomaterials in a single step by using 4,4′‐azo (4‐cyanoglutaric acid, CA)
Junqing Xiahou +8 more
wiley +1 more source