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6篇 您的检索式:作者名="And Helland"
    题名 作者 年代 出处 被引量
1Narcissism in organizations:A multisource appraisal reflects different perspectives显示文摘Blair C A Hoffman B J and Helland K R 2008Hu-man Performance2008,21,3:1
2Energy, protein and amino acid requirements for maintenance and efficiency of utilization for growth of Atlantic salmon post-smolts determined using increasing ration levels显示文摘Helland S J Hatlen B and B Grisdale-Helland 2010Aquaculture2010,305,14:1
3An analysis of corporate philanthro- pic practices 显示文摘Eric Helland and Janet Kiholm Smith 2004working paper2004,,:1
4Regulation and the Evolution of Corporate Boards: Monitoring, Advising, or Window Dressing显示文摘Helland Eric and Michael Sykuta 2004Journal of Law and Economics2004,47,1:1
5Mountain evolution and environmental changes of Huangshan(Yellowmountain),China显示文摘Huangshan (Yellow Mountain) is located in southern part of the lower reaches of the Yangtze River. The highest Lotus Flower peak is 1864 m above sea level. Formative ages of the Huangshan and its granite,process of mountain geomorphic evolution from the Eocene to Quaternary,environmental changes of Quaternary, formative origin of beautiful peaks and fascinating rocks were studied and the questionable 'Pleistocene glaciation' was also discussed in this paper.HUANG Pei-hua R.F. Diffendal,Jr. YANG Min-qing P.E. Helland(University of Science and Technology of China, Hefei 230026, China Conservation and Survey, University of Nebraska-Lincoln, Lincoln,NE 68588-0517 USA Nebraska Department of Environmental Qua 1999Journal of Geographical Sciences1999,9,1:0
6挪威沿岸区域河流输入的有机碳和氮显示文摘在1990~1998年,监测了挪威境内10条河流所传输的有机和无机物质。有机物在河流悬浮物中占40%~80%,其中的主要成分为C/N摩尔比值大于25的溶解有机碳。对于以森林为主的集水流域的河流,有机物的C/N比随流量的增加而增加,而对于以山地为主的集水流域的河流,有机物的C/N比并不受流量的影响。室内实验表明,当盐度增加到30时,仍有超过90%的溶解有机碳处于溶液中。在凝絮和固着物中有机物的含量低于5%,C/N比值介于6.7~12.4,与种植土壤和沿岸海洋沉积物的C/N比相似。从而证实了被河流携带入海的有机物中只有一少部分沉积在海岸带。And Helland Gjertrud Holtan PerJφrgensen 张东奇 2003AMBIO-人类环境杂志2003,32,6:0
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