共搜索到7298条信息,每页显示10条信息,共730页。用时:0小时0分0秒406毫秒
for the local environment. The extractable speciation of As, Cd, Pb and Zn in soil profiles can easily release into soil solution and surrounding environmental media. The acid-extractable As, reducible... Environmental availability and profile characteristics of arsenic, cadmium, lead and zinc in metal-contaminated vegetable soils SONG Jie(宋 杰), GUO Zhao-hui(郭朝晖), XIAO Xi......
A segment version transcoding for client-centric wireless mobile media streamingLEE Chong-deuk1, BANG Jun-ho2, JEONG Taeg-won1(1. Division of Electronic Engineering, Chonbuk National University... the continuous media frames to measure the individual streaming profit of certain segment versions of a media object. Therefore, a new segment version-based transcoding (SVT) mechanism is derived......
J. Cent. South Univ. Technol. (2011) 18: 840-847 DOI: 10.1007/s11771-011-0771-x Effect of aggressive pH media on peat treated by cement and sodium silicate grout S. Kazemian1, A. Prasad2, B. B. K... were investigated by evaluating the changes in unconfined compressive strength, moisture content, and scanning electron microscopy (SEM) of samples with time in different pH media. The results indicate......
J. Cent. South Univ. (2017) 24: 1144-1154 DOI: 10.1007/s11771-017-3517-6 Interactions between gas flow and reversible chemical reaction in porous media JIANG Yuan-yong(姜元勇)1, XU Zeng-he(徐曾和)1, ZHANG..., Fuxin 123000, China; 3. Environmental Monitoring Center Station of Tangshan City, Tangshan 063000, China Central South University Press and Springer-Verlag Berlin Heidelberg 2017 Abstract: Taking......
Rock matrix-fractured media model for heterogeneous and fractured coal bedZHANG Chun-hui1, YU Guang-ming2, ZHANG Chun1(1. School of Civil Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 2. School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China)Abstract:Coal was considered rock matrix-fractured media composed of rock matrix......
; 酸性介质 中图分类号: TF111.31 文献标识码: A Electrochemical oxidation of arsenopyrite in acidic media LI Qian, YANG Yong-bin, JIANG Tao, QIU Guan-zhou (School of Resources Processing and Bioengineering...: arsenopyrite; electrochemistry; acidic media 含砷金矿是典型的难处理金矿, 砷黄铁矿是其最重要的载金矿物. 在过去的几十年中, 从含砷难处理金矿中提取金的研究比较多, 研究发现无论在含砷金矿直接浸出过程中还是在预氧化过程中电化学反应都起着重要作用[1-3]. 因而近年来, 大量的研究工作主要集中在对砷黄铁矿的电化学氧化方面......
by Acidithiobacillus ferrooxidans in agar-simulated extracellular polymeric substances media YU Run-lan(余润兰)1, 2, TAN Jian-xi(谭建锡)1, 2, GU Gou-hua(顾帼华)1, 2, HU Yue-hua(胡岳华)1, 2, QIU Guan-zhou(邱冠周)1, 2 1... polymeric substances (EPS) media was investigated. The results indicate that bacterial EPS can release H+ and concentrate Fe3+; Fe2+ is movable between agar-simulated EPS phase and bulk solution phase......
that the production of stainless steels increases in China. The dust contains elements such as Cr, Ni, Pb, Zn, Cd and their solubility in leaching media exceeds the environmental regulatory limits[2...; Abstract: Stainless steelmaking dust makes an environmental problem in the disposal or landfills and has been......
Environmental impact evaluation for high-speed railwaySONG Xiao-dong(宋晓东)1, FU Yan-bing(付延冰)1, CHEN Zhi-ya(陈治亚)1, LIU Heng-bin(刘恒斌)2(1. School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China;2. Transport Department, Ministry of Railway, Beijing 100844, China)Abstract:Environmental impact evaluation system boundary of high-speed railway was defined based......
ENVIRONMENTAL FRIENDLY ANODIZING ON AZ91D MAGNESIUM ALLOYS AND COATING CHARACTERISTICS M. Hino1,T. Kanadani2,A. Saijo3,M. Hiramatsu1 (1.Industrial Technology Research Institute of Okayama...-cho, Takahashi-shi, Okayama 716-0061, Japan) Abstract:An environmental friendly anodizing treatment (Anomag) from a phosphate-based solution without heavy metals on AZ91D magnesium alloy was studied......