维普中文期刊产品整合服务
61篇 您的检索式:作者名="Holtan"
    题名 作者 年代 出处 被引量
1氮流失对淡水和海洋受体富营养化的重要意义显示文摘本文探讨了挪威南部两个大的流域内氮负荷对淡水和海水的影响。较大地区的氮固留的变化将强烈影响淡水中的氮的浓度和海水中氮的负荷并导致水体富营养化。大气沉降的增加、水文条件的改变、由于氮'饱和'或酸化对植物根系的损害造成植物对氮吸收量的减少都会促进富营养化作用。气候的波动强烈影响季节经流模式。较长期的气候变化将会造成大量有机氮矿质化的增加。生物可利用性和季节模式以及营养物质的比率将是决定受者反应的主要决定因素。对于人烟稀少的石南荒地占优势的Bjerkreim流域,营养元素的比例强烈趋向于高氮/磷比。磷元素浓度远远低于淡水富营养化所需浓度,氮的增加只会进一步加强流行的磷的制约性。类似的情况还会出现在海域。流入海洋的河流中氮相对于磷或硅过量而导致近岸海区磷或硅成为暂时性的制约因素。Auli河流集约农业活动产生了高氮、磷输出的但很分散、很难预测的具有可变氮/磷比的径流峰。相对于海水中的氮或磷浓度而言,Bjerkreim河低浓度的矿物质养分意味着稀释在起着作用。而Auli河流域可能在河水和峡湾内部形成富营养化。由于营养物质浓度显著的季节性变化和岸流的作用,河源对营养物质的影响将在夏季达到最大。来自两个流域及其子流域的数据表明农业活动对氮流失的整体重要性。Dag O.Hessen Gjertrud Holtan Alte Hindar 李杭 1997人类环境杂志1997,26,5:11
2The role ofknox genes in plant development 显示文摘Hake S Smith H M Holtan H 2004Annu Rev CellDevBiol2004,20,:1
3Role for DNA methylation in the control of cell typespecific maspin expression显示文摘Futscher BW Oshiro MM Wozniak RJ Holtan N Hanigan CL Duan H 2002Nat Genet2002,31,2:1
4The corrosion of magnesium in aqueous solution containing chloride ions显示文摘Tunold R Holtan H Berfe M 1977Corrosion Science1977,17,4:1
5Composite end point of graft-versus-host disease-free, relapse-free sur- vival after allogeneic hematopoietic cell transplantation显示文摘Holtan SG DeFor TE Aleksandr L 2015Blood2015,125,8:1
6Riverine inputs of organic carbon and nitrogen to Norwegian coastal areas显示文摘Helland A Holtan G J?rgensen P 2003AMBIO:A Journal of the Human Environment2003,32,6:1
7New hypothesis on the role of alternating sequences in calcium-alginate gels显示文摘Donati I Holtan S Morch Y A 2005Biomaeromolecules2005,6,:1
8Host immunity affects survival in myelodysplastic syndromes: Independent prognostic value of the absolute lymphocyte count显示文摘Jacobs NL Holtan SG Porrata LF 2010Am J Hematol2010,85,3:1
9Application of high - performance anion- exchange chromatography with pulsed amperometric detection and statistical analysis to study oligosaccharide distributions - a complementary method to investigate the structure and some properties of alginates 显示文摘Simon Ballance SynnCve Holtan 2005Journal of Chromatography A2005,1093,:1
10Combination of paclitaxel and carboplatin as second-line therapy for patients with metastatic melanoma 显示文摘Rao RD Holtan SG Ingle JN 2006Cancer2006,106,2:1
11mTOR inhibitor mono- therapy is insufficient to suppress viremia and disease progression in Epstein-Barr Virus-driven lymphoproliferative disorders (EBV- LPD) 显示文摘Holtan SG Porrata LF Colgan JP 2008Am J nematol2008,83,8:1
12Cancer and pregnancy: parallels in growth, invasion, and immune modulation and implications for cancer therapeutic agents 显示文摘HOLTAN S G CREEDON D J HALUSKA P 2009Mayo Clin Proc2009,84,11:1
13Bond strength of a light-cured and two auto-cured glass ionomer liners显示文摘Holtan JR Nystrom GP Olin PS 1990J Dent1990,18,5:1
14Multiple myeloma with concomitant JAK2-positive essential thrombocythemia post- successful autologous peripheral blood hematopoietic stem cell transplant显示文摘Holtan SG Hoyer JD Buadi FK 2011Bone Marrow Transplant2011,46,4:1
15Phosphorus in soil, water and sediment:an overview 显示文摘Holtan H Kamp-Nielsen L Stuanes A O 1988Hydrobiologia1988,170,:1
16Conbination of paclitaxel and carboplatin as second-line therapy for patients with metastatic melanoma显示文摘Rao RD Holtan SG Ingle JN 2006Cancer2006,106,2:1
17Phosphorus in soil, water and sediment: an overview显示文摘H. Holtan L. Kamp-Nielsen A. O. Stuanes 1988Hydrobiologia1988,,1:1
18The corrosion of magnesium in aqueous solution containing chloride ions显示文摘 Hans Holtan May-britt 1997Corrosion Science1997,17,:1
19Morphologic Changes in Corneal Endothelial Cells During 3 Years of Fluorocarbon Contact Lens Wear显示文摘William M. Bourne Steven B. Holtan David O. Hodge 1999Cornea1999,,:1
20New hypothesis on the role of alternating sequences in calcium-alginate gels显示文摘DONATI I HOLTAN S MORCH Y A 2005Biomacromolecules2005,6,2:1
返回顶部 每页显示:
共4页 首页 上一页 第1页 下一页 末页 /4 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