Results 31 to 40 of about 30,500 (193)

Annealing Effect to Morphology and Magnetic Properties of Ni Nanoparticles Deposited on the Surface of Al₂0₃Particles [PDF]

open access: yes, 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
core   +1 more source

Template Engineering of Magnetic Nanoparticles Decorated on Porous Carbon for High‐Performance Multiband Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang   +9 more
wiley   +1 more source

电力外绝缘污秽颗粒等效模型和粒径分布探讨

open access: yesDianci 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  

冻融循环次数和土壤含水率对油松林土壤团聚体及有效态微量元素的影响

open access: yesShuitu Baochi Xuebao, 2020
以王茂沟流域典型人工油松林土壤为对象,研究了不同冻融循环次数(0,3,9次)和不同土壤含水率(40%FC,60%FC,80%FC)条件下土壤团聚体组成和团聚体中4种有效态微量元素(Cu、Fe、Mn、Zn)的演变特征。结果表明 ...
姚珂涵, 肖列, 李鹏, 高扬
doaj  

Formulation of micro pulverized flours and characterization of their physicochemical properties [PDF]

open access: yes, 2011
Thesis (Ph. D.)--University of Tsukuba, (A), no.
Hossen Md. Sharif
core  

Hollow Porous Nitrogen‐Doped Carbon‐Confined FeP/Fe2P Nanoparticle‐Armored Catalyst for Efficient Oxygen Reduction Reaction in Aqueous/Flexible Zinc‐Air Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang   +8 more
wiley   +1 more source

中国5种典型土壤的侵蚀泥沙粒径分布特征

open access: yesShuitu Baochi Xuebao, 2018
通过天然降雨试验,研究我国5种典型土壤的侵蚀泥沙团粒和单粒粒径分布以及泥沙各级团粒的机械组成特征。2013—2014年汛期(6—9月),监测红壤、紫色土、黄绵土、褐土和黑土径流小区的降雨产流事件,收集侵蚀泥沙样品,利用湿筛法和吸管法测定其团粒和单粒粒径分布;同时,筛选出泥沙各级团粒样品,进一步测定其单粒粒径组成。结果表明:(1)侵蚀泥沙粒径分布是土壤质地和降雨强度综合作用的结果,团粒粒径分布更适合作为表征泥沙输移的指标;(2)5种土壤的侵蚀泥沙皆表现出粉团(0.002~0.05 mm)和黏团(<0 ...
郝燕芳, 刘宝元
doaj  

有机物料对原生盐碱土微团聚体特征及稳定性的影响

open access: yesShuitu Baochi Xuebao, 2020
为了研究不同有机物料对原生盐碱土微团聚体粒径分布状况及不同粒径微团聚体间有机碳含量的影响,以施用有机物料的原生盐碱土为试验对象,设置空白处理(CK)、颗粒状秸秆处理(GW)、正常玉米秸秆处理(CS)、牧草处理(GS)和羊粪处理(SM),采用大田试验与室内分析相结合的方法,研究不同有机物料施用下土壤微团聚体的粒径分布状况及不同粒径微团聚体间有机碳含量,分析不同粒径微团聚体间有机碳对土壤微团聚体稳定性的贡献。结果表明,施用有机物料各处理较CK处理均增加土壤2~0.25 mm的团聚体含量,增幅为9.02 ...
陈晓东   +4 more
doaj  

Constructing Serrated Boride Composite Layer for Enhancing Wear Resistance of Ti6Al4V Alloy

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Appropriate configuration combined with strong interface bonding is the essential requirement for developing high wear‐resistant coatings. Herein, based on the powder‐pack boriding process, the properties of Ti6Al4V alloy are effectively improved by constructing a serrate tribological boride composite layer.
Ying Wu   +9 more
wiley   +1 more source

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