Results 41 to 50 of about 30,500 (193)
为研究动车组支柱绝缘子伞裙不同部位积污特性,将动车组支柱绝缘子伞裙分为迎风面、背风面和侧风面,建立了积污特性的流场计算模型,以质量沉积率为表征积污特性的参数,分析了不同部位质量沉积率与污秽颗粒粒径、气流速度之间的关系,比较了不同部位质量沉积率的差异性。仿真结果表明:迎风面和侧风面质量沉积率随污秽颗粒粒径的增大而增大,背风面质量沉积率随污秽颗粒粒径的增大而减小;不同部位质量沉积率与气流速度的关系受污秽颗粒粒径的影响,当污秽颗粒的粒径大于10μm时,随着气流速度增大,迎风面和侧风面质量沉积率增大 ...
律方成 +5 more
doaj
旨在为筒仓的设计和优化提供参考,基于自主设计的半圆柱形有机玻璃平底筒仓模型,进行了平均粒径分别为15、3.5 mm和5.5 mm陶球颗粒的室内筒仓中心卸料试验和离散元数值模拟。采用流态观察、速度分析、颗粒位移追踪3种方法探究了3组粒径颗粒的流态演变过程,分析了仓壁压力分布及变化规律,通过PFC 2D得到孔隙率、力链等细观变量分布并联合宏观层次的物理试验探讨了粒径大小对流态及仓壁压力的影响。结果表明:粒径对颗粒流态的整体演化过程无显著影响,不同粒径颗粒的流态均由整体流经漏斗流过渡为管状流 ...
杨世明1,刘克瑾2,姚辉江2,黄硕硕2,杜春来1,章敬波1 YANG Shiming1, LIU Kejin2, YAO Huijiang2, HUANG Shuoshuo2, DU Chunlai1, ZHANG Jingbo1
doaj +1 more source
Creation of Enhanced Photoelectric Fields Based on Nanoparticle Superlattices for Novel Chemical Reactions [PDF]
課題番号 ...
TERANISHI TOSHIHARU, 寺西 利治
core
In Situ Uniform Lithium Enrichment for Dense, High‐Performance LLZO Solid Electrolytes
ABSTRACT A major challenge in garnet‐type Li7La3Zr2O12 (LLZO) system all‐solid‐state electrolytes is the high porosity that typically remains after sintering, which compromises ionic conductivity and degrades battery cycling performance. To address this, we propose an innovative strategy to achieve uniform lithium enrichment on the surface of ...
Yi‐Yang Xiao +8 more
wiley +1 more source
为了解驾校不同微环境地表灰尘中Hg的污染情况,使用测汞仪(Hydra II C)测定了芜湖市区26个驾校全粒径和细粒径灰尘样品中Hg的含量,并进行了统计分析。结果表明:芜湖市区驾校地表全粒径和细粒径灰尘中Hg的平均含量分别为49.36,59.97 ng/g,均低于芜湖市土壤背景值,且全粒径与细粒径灰尘中Hg含量存在极显著性差异(P S弯 > 侧方位停车 > 直角转弯 > 坡道定点,细粒径灰尘则表现出:倒车入库 > S弯 > 侧方位停车 > 坡道定点 > 直角转弯,两者呈现出相似的规律,其中倒车入库 ...
王月 +6 more
doaj
Elucidation of Electron Transport Properties of Small Gold Nanoparticle Superlattices Connected with Parallel and Perpendicular π-Conjugated System [PDF]
課題番号 ...
テラニシ トシハル, 寺西 利治
core
ABSTRACT Metal oxide semiconductor‐supported noble metal nanoparticles are common sensing materials for gas sensors. However, the large size and their tendency to migrate at high temperatures often lead to inferior sensing sensitivity and stability. Herein, a salt‐assistant strategy is developed to prepare fully‐exposed Ir clusters on SnO2 nanorods ...
Yi Jiang +7 more
wiley +1 more source
Highly Stable CsPbBr3@Cs4PbBr6 Perovskite Fluorescent Nanomaterials for White Light‐Emitting Diodes
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
土壤团聚体破碎转化路径是坡面侵蚀过程研究的难点问题之-。目前团聚体破碎转化路径的定量表征仍不明晰,-定程度上限制了土壤侵蚀过程中泥沙分选搬运机制的深入研究。基于大样带调查选取6种不同质地的典型农耕地土壤为研究对象,结合稀土元素(Rare Earth Elements,REE)示踪方法,综合分析不同粒径土壤团聚体(5~2,2~1,1~0.5,0.5~0.25,
张文龙 +6 more
doaj
ABSTRACT The B2 phase is a critical strengthening constituent in AlxFeCoCrNi high‐entropy alloys (HEAs), and introducing such phases onto the nanoscale cellular substructures is an ideal pathway for strengthening alloys fabricated by laser powder bed fusion (L‐PBF).
Xiangjian Zhu +5 more
wiley +1 more source

