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程较好地拟合.凹凸棒石与重金属的长期作用反应机制可能是由于凹凸棒石纳米效应和反应活性,表面缓慢水化导致含重金属离子溶液pH值缓慢升高,诱导了Ni2+在凹凸棒石表面沉淀,在凹凸棒石表面形成了氢氧化物或层状双氢氧化物. 关键词:凹凸棒石; 重金属离子; 吸附; 长期作用; palygorskite; heavy metal ion; absorption; long-term reaction......
为高速铁路在建设前对路基的长期动力稳定性分析提供了思路.关键词:软岩改良土;泥质粉砂岩;路基;长期动力稳定性;动剪应变Long-term dynamic stability analysis on argillaceous siltstone physical improved soil subgrade of high-speed railwayCHEN Xiang-liang1, 2..., resonance, critical dynamic stress, dynamic shear strain parameters, and so on, to comprehensively evaluate the dynamic stability of soft rock improved soil. The results show that the long-term dynamic......
words:solidification/stabilization (S/S); heavy metal contaminated soil; drying and wetting cycles; long-term stability...Effect of cyclic drying and wetting on engineering properties of heavy metal contaminated soils solidified/stabilized with fly ashZHA Fu-sheng(查甫生)1, 2, LIU Jing-jing(刘晶晶)2, XU Long(许龙)1, 2, CUI Ke......
words:carbon dioxide reforming of methane; Pt-Ru/γ-Al2O3 catalysts; long-term stability; thermochemical energy storage...(杨建平)1, WANG Wei-long(王维龙)3, YANG Min-lin(杨敏林)2(1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education (South China University of Technology), Guangzhou......
Effect of Phase Transformation During Long-Term Solution Treatment on Microstructure,Mechanical Properties,and Bio-corrosion Behavior of Mg–5Zn–1.5Y Cast AlloyH.Jafari,E.Heidari,A.Barabi,M.Dashti... of long-term solution treatment for various intervals on the microstructure,mechanical properties,and corrosion resistance of the as-cast Mg–5Zn–1.5Y alloy was investigated.Variation of secondary......
change with the increase of Nb content. The precipitating rate and volume fraction of TCP phases increase significantly with the increase of Nb content in the process of long term aging at 1100 °C... of the alloy and Nb content is discussed based on JMatPro software and the lastest relevant database for single crystal superalloy. Key words: single crystal superalloy; Nb; microstructure stability; long-term......
;耦合作用;耐久性评价;寿命预计 中图分类号:TU312 文献标志码:A 文章编号:1672-7207(2015)08-3092-08 Durability..., load and erosion time) were proposed. And then, by means of numerical fitting and parametric regression, the durability evaluation model and life prediction method of shield segment concrete under......
Effect of Fly Ash and Early Strength Agent on Durability of Concrete Exposed to the Cyclic Sulfate Environment袁晓露,李北星Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education,Wuhan University of Technology摘 要:The effect of fly ash and early strength agent on resistance of concrete to the cyclic sulfate environment......
Modeling Boundary and Edge Effect of Chloride Diffusion for Durability Design of Concrete Structures Exposed in Marine EnvironmentZHOU Xingang1,2,LI Kefei1,CHEN Zhaoyuan11. Department of Civil Engineering,Tsinghua University2. School of Civil Engineering,Yantai University摘 要:According to the Fick’s second law of diffusion, six analytical solutions......
Effect of Long-Term Intake of Y3+ in Drinking Water on Gene Expression in Brains of Rats Liu Jiesheng1,Xue Yanfang1,Yang Weidong1,Zhang Ping1 (1.Department of Biotechnology, Jinan University, Guangzhou 510632, China) Abstract:The rats were fed with water dissolved Y3 + at different levels (0, 53.4, 5340 mg· L- 1 ) for 7 months. The gene expression in brain tissue was detected......