Results 41 to 50 of about 141,082 (164)

浓度与pH互作下表没食子儿茶素没食子酸脂(EGCG)对黄壤Al、Fe、Mn迁移的影响

open access: yesShuitu Baochi Xuebao, 2017
对淋溶环境下黄壤的Al、Fe、Mn浓度进行分析,探讨浓度与pH互作下表没食子儿茶素没食子酸脂(EGCG)对黄壤Al、Fe、Mn迁移的影响。采用二因素四水平完全随机试验,用48个不同浓度和pH组合的EGCG溶液对黄壤进行间歇淋溶,测定淋出液中Al、Fe、Mn浓度,分析黄壤Al、Fe、Mn迁移总量和迁移过程。结果表明,黄壤Al、Fe、Mn迁移总量在浓度与pH互作下均有显著差异;高浓度(5.00 mmol/L)、高pH(5.5)EGCG溶液有利于Al和Fe的迁移,迁移总量分别为180.24 mg/L和41 ...
张俊思   +7 more
doaj  

Discussion of the horizontal migration of the Ordovician central Paleouplift in Ordos basin(鄂尔多斯盆地奥陶纪中央古隆起水平迁移规律)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
鄂尔多斯盆地奥陶纪中央古隆起是盆地内的重要油气聚集区,其成因一直是大家关注的热点.利用丰富的钻井资料对古隆起中东部地区中奥陶统马五段地层的沉积特征进行详细的分析,编制出了马五段各层段的厚度等值线图,圈出了各时期的沉降中心位置,发现在马五8~马五5时期,沉降中心基本以向南迁移为主,伴随着一定程度的向西迁移;在到时期,沉降中心以向西的迁移为主,伴随微弱的向南迁移.这种迁移过程支持鄂尔多斯盆地西、南缘在奥陶纪时发育双前陆盆地,“L”型中央古隆起是在早-中奥陶世时受该双前陆盆地前缘隆起相互叠加的影响.
YUANSuhang(袁苏杭)   +8 more
doaj   +1 more source

An Environmental‐Friendly and Sustainable Ramie‐Derived Co/N‐Doped Carbon With Dual Function for Synergistic Polysulfide Regulation in Li‐S Batteries

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT The dual challenges of environmental sustainability and rising energy needs underscore the necessity for high‐energy‐density batteries, making lithium–sulfur (LSB) systems with their high theoretical capacity highly attractive. However, the polysulfide shuttle, coupled with inherent kinetic limitations in the sulfur reduction reaction ...
Bingbo Ni   +4 more
wiley   +1 more source

Velocity‐Iterative Directional Annealing Enables Ultra‐Elongated Columnar Grains and Exceptional Ductility in TiAl Alloys

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT This study introduces a novel velocity‐iterative directional annealing (IDA) strategy to overcome stagnation challenges in columnar grain growth of Ti‐48Al‐2Cr‐2Nb alloys. By dynamically adjusting hot zone migration rates across iterative cycles, the IDA protocol achieved 92.2% synchronization between anisotropic α‐grain boundary (GB ...
Zedong Liu   +6 more
wiley   +1 more source

基于ACE实现进程迁移技术的研究

open access: yesGuangtongxin yanjiu, 2007
在数据库集群系统中,进程迁移常用于实现系统的负载均衡、高效容错和减少通信开销等方面。文章提出的基于自适应通信平台(Adaptive Communication Environment,ACE)实现进程迁移技术的方法,在用户层实现内核级的进程迁移功能,解决了数据库集群系统进程迁移跨平台的问题,提高了集群系统的数据处理和系统容错能力。
肖建桥, 卢军
doaj  

Cancellous Bone‐Like Sr‐Doped Hydroxyapatite/Gelatin Porous Scaffolds With Nanofibrous Architecture and Ion Release for Promoting Osteogenesis

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Constructing a porous scaffold with the essential features of natural cancellous bone, including structural architecture and biochemical cues, is one of the pivotal factors for effective bone regeneration. In this study, a biomimetic composite porous Gelatin fibrous scaffold (SrHA/Gelatin) incorporating ultralong strontium‐doped hydroxyapatite
Yin‐Chuan Wang   +8 more
wiley   +1 more source

一种离子迁移谱仪

open access: yes, 2014
本发明涉及一种离子迁移谱仪,包括离子迁移谱仪和中空密闭的恒温箱;离子迁移谱仪设置于恒温箱内,离子迁移谱仪的进样口穿过恒温箱的外壁与外界相连通。离子迁移谱仪的离子迁移管有电加热装置用来实现离子迁移管工作在恒定温度下,恒温箱实现离子迁移谱仪工作环境恒定温度。这样离子迁移谱仪有效解决温度对离子迁移率和仪器其他元器件的影响 ...
李海洋, 仓怀文, 王新, 李东明
core  

直流盘形悬式绝缘子离子迁移测试系统的研制

open access: yesGaoya dianqi, 2015
针对高压直流盘形悬式瓷或玻璃绝缘子离子迁移问题,以直流绝缘子离子迁移试验标准为基础,对国内外直流绝缘子离子迁移的机理研究和开发的试验系统进行了分析和调研,设计了完整的直流绝缘子离子迁移试验系统和方案,并开发了一套基于MSP430单片机的直流绝缘子体电流采集处理系统,实现了50路体电流信号和1路电压信号的的循环测量和数据采集,体电流测量结果自动量程转换。整套系统满足直流绝缘子离子迁移试验标准要求,具有一定的工程实用性。
骆晓龙, 张晋寅, 张源斌
doaj  

Leakage Current Dominated Piezocatalysis by Na(AlSi2O6)H2O Nanobelts: Highly Efficient U(VI) Solidification and N2 Conversion

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalysis has garnered unprecedented research enthusiasm for applications in energy and environmental fields, as it can harvest the tiny vibration energy from the natural environment and convert it into electrical energy to drive catalytic reactions.
Feixue Gao   +9 more
wiley   +1 more source

一种阵列式离子迁移管

open access: yes, 2010
本发明公开了一种阵列式离子迁移管,其采用阵列式一体化设计制作的迁移管,可以同时提供多个具有相同电场和离子门脉冲的检测通道,实现多种检测手段的集成化应用,提高迁移谱仪的检测能力。该迁移管的特征在于一体化阵列式结构,由阵列化的进样通道、电离源、反应区、离子门、漂移区、栅网、法拉第盘等部分构成。该新型离子迁移管可以使用不同的电离源及漂气,掺杂气体等,从而实现对待测物质的高选择性测定以及检测过程中迁移率影响因素的一致化,大大降低了迁移谱仪的误报率 ...
李海洋, 董璨, 杜永斋
core  

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