维普中文期刊产品整合服务
8篇 您的检索式:作者名="Dharni"
    题名 作者 年代 出处 被引量
1pH-dependent ciprofloxacin sorption to soils: Interaction mechanisms and soil factors influencing sorption显示文摘Dharni Vasudevan Gregory L. Bruland Brendan S. Torrance Virginia G. Upchurch Allison A. MacKay 2009Geoderma2009,,3:1
2Spectroscopic investigation of ciprofloxacin speciation at the goethite-water interface显示文摘Paras Trivedi Dharni Vasudevan 2007Environmental Science&Technology2007,41,:1
3Production, purification, and characterization of antifungal metabolite from Pseudomonas aeruginosa SD12, a new strain obtained from tannery waste polluted soil显示文摘Dharni S Alam M Kalani K 2012Journal of Microbiology and Bioteehnology2012,22,5:1
4Fluoride sorption and ssociated aluminum release in variable charge soils 显示文摘Laura F Harrington Ellen M Cooper Dharni Vasudevan 2003Journal of Colloid and Interface Science2003,267,:1
5pH-dependent ciprofloxacin sorption to soils: Interaction mechanisms and soil factors influencing sorption显示文摘Dharni Vasudevan Gregory L. Bruland Brendan S. Torrance Virginia G. Upchurch Allison A. MacKay 2009Geoderma2009,,3:1
6The persistent effects of chicken cultivation on the community composition of soil ammonia-oxidizing bacteria显示文摘DHARNI S KANG R LEIGH A K K 2010Journal of Experimental Microbiology and Immunology (JEMI)2010,14,:1
7Improved speciation of dissolved organic nitrogen in natural waters: amide hydrolysis with fluorescence derivatization显示文摘The objective of this study was to improve primary-amine nitrogen (1°-N) quantification in dissolved organic matter (DOM) originating from natural waters where inorganic forms of N, which may cause analytical interference, are commonly encountered. Efforts were targeted at elucidating organic-N structural criteria influencing the response of organic amines to known colorimetric and fluorescent reagents and exploring the use of divalent metal-assisted amide hydrolysis in combination with fluorescence analyses. We found that reaction of o-phthaldialdehyde (OPA) with primary amines is significantly influenced by steric factors, whereas fluorescamine (FLU) lacks sensitivity to steric factors and allows for the detection of a larger suite of organic amines, including di- and tri-peptides and sterically hindered 1°-N. Due to the near quantitative recovery of dissolved peptides with the FLU reagent and lack of analytical response to inorganic nitrogen, we proposed that FLU be utilized for the quantification of primary amine nitrogen. In exploring the application of divalent metal promoted peptide hydrolysis to the analysis of organic forms of nitrogen in DOM, we found that Zn(II) reaction increased the total fraction of organic-N detectable by both OPA and FLU reagents. Zn-hydrolysis improved recovery of organic-N in natural waters from < 5% to 35%. The above method, coupled with standard inorganic-N analyses, allows for enhanced resolution of dissolved organic nitrogen (DON) speciation in natural waters.Ryan L.Fimmen Tamara D.Trouts Daniel D.Richter Jr. Dharni Vasudevan 2008Journal of Environmental Sciences2008,20,10:0
8高技术高速机车显示文摘在齐塔兰詹机车厂人的生命中,3月31日是神圣的一天。这一天,这个优质生产单位的职工骄傲地将他们本年度生产的最后一台机车献给国家。 齐塔兰詹机车厂(CLW),以前叫作机车制造厂,是从1950年1月26日(也就是印度成为共和国的那一天)开始生产蒸汽机车的,CLW集中体现了国家在工业化和自力更生方面所取得的开拓性成就。 CLW享有独特的荣誉,它不仅是印度铁路的首家生产单位。Dharni 彭海霞 1997大功率变流技术1997,0,3:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费