Results 21 to 30 of about 19,923 (169)
Shuitu Baochi Xuebao, 2018 为探究煤矸石对盐碱土壤绿化的改良效果和对土壤微生物的影响，将不同用量（0，10%，20%，30%，40%，50%）和不同粒径（小粒径5 mm，以及小中大粒径等比例的混合粒径）煤矸石施用于盐碱土壤，进行紫花苜蓿盆栽试验，测定紫花苜蓿株高、生物量以及土壤微生物量和酶活性指标。结果表明，不同粒径煤矸石处理的土壤微生物量碳氮，土壤的脲酶、过氧化氢酶、脱氢酶活性，以及紫花苜蓿株高、生物量均随着煤矸石用量的增加呈先增大后降低的趋势，混合粒径、小粒径、中粒径、大粒径煤矸石处理的盐碱土上述指标分别在20%，20%，30%
孔涛 +5 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The thermal expansion mismatch between sapphire and Ti‐6Al‐4V (TC4) alloy has traditionally limited the shear strength of ceramic‐metal joints to ≤ 170 MPa. In this study, active brazing with Ag‐35.25Cu‐1.75Ti (wt%) leads to the formation of a dual‐function microstructure, wherein uniformly dispersed submicron Ti3(Cu,Al)3O particles embedded ...
Hairui Liu +13 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 侵蚀泥沙颗粒对深入理解和模拟泥沙及与之有关的化学污染物质输移至关重要。通过对国内外相关研究归纳整理、总结经验，重点围绕土壤水蚀的2个主要过程（细沟间和细沟侵蚀），对侵蚀泥沙颗粒输移形式、各级未分散颗粒的机械组成、不同粒径颗粒的富集规律和分选特征以及影响因素等进行综述与评价。纵观国内外的研究进展，侵蚀泥沙颗粒流失规律的研究已经较为全面和深入，取得了-些共识性成果：（1）未分散状态下的泥沙颗粒粒径分布更适合用来描述、模拟泥沙的输移行为和与之相关的营养污染物质迁移；（2 ...
郝燕芳, 佟帆
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The inherent trade‐off between high saturation induction (Bs) and low core loss in soft magnetic materials presents a challenge in the development of high‐frequency power electronics. Here, a processing approach that combines accelerated Cu ordering with dual magnetic anisotropy control in high‐Bs Fe‐based nanostructured cores is examined ...
Xiaoying Li +11 more
wiley +1 more source
Annealing Effect to Morphology and Magnetic Properties of Ni Nanoparticles Deposited on the Surface of Al₂0₃Particles [PDF]
, 2009 Ni nanoparticles were deposited on Al₂0₃ particles with a diameter of 0.3 μm by the barrel sputterlng technique, and analyzed the prepared samples by X-ray diffraction (XRD) and transmission electron microscopy (TEM).
田口 明, 赤丸 悟士, 阿部 孝之
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren +9 more
wiley +1 more source
Dianci bileiqi, 2013 为今后实现自然积污规律研究和防污的差异化,对污秽颗粒等效简化模型、大气总悬浮颗粒物（TSP）的粒径分布函数、绝缘表面污秽主要化学成分对应TSP的粒径分布进行了综述和分析,认为可以污秽颗粒可等效简化为球体,使用空气动力学粒径衡量其粒径;建立TSP粒径分布函数拟合模型;分析认为化学成分Ca2+、SO42-、Cl-、SiO2、Al2O3在TSP中的粒径主要分布在1.810μm,010μm,1.810μm,30-40μm,40μm50μm的范围内,最后对自然积污规律研究和防污的差异化进行了展望。
李恒真 +5 more
doaj
Experimental Study on Thermal Properties of WC-Co Sintered Alloys [PDF]
, 1984 Thermal properties, namely the thermal diffusivity, the specific heat and the thermal conductivity, are considered to be important factors for the study of thermal characteristics.
井村 定久 +2 more
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