维普中文期刊产品整合服务
292篇 您的检索式:作者名="Schwalb"
    题名 作者 年代 出处 被引量
1Environmental changes reflected by n-alkanes of lake core in Nam Co on the Tibetan Plateau since 8.4 kaB.P.显示文摘The n-alkanes are extracted from NMLC-1 core that was drilled in the Nam Co, central Tibet. They are measured by using Gas Chromatography and Mass Spectrometry (GC/MS) for componential and quantitative analyses. According to the constructed depth-age model, the component and concentration of n-alkanes, together with total organic carbon (TOC), total nitrogen (TN) and carbonate are used to elu- cidate palaeoenvironmental changes of Nam Co during the past 8.4 ka. The results indicate that Holo- cene environment performs three stages in the lake area. In the stage of 8.4―6.7 kaB.P., it was warmer while precipitation slightly increased. This stage was ended by an obvious cold/dry event. During 6.7― 5.8 kaB.P., temperature increased rapidly and reached its maximum values at about 6.0 kaB.P. The environments were warm/wet optimum for the blooming of terrestrial plants and submerged aquatic plants. After that, temperature decreased continuously and showed the lowest values at about 3.0 kaB.P. From 2.9 kaB.P. to the present, temperature rose again but alternated with cold and warm. The lake area tended to be dry after 1.4 kaB.P. During 600―400 aB.P., the environmental feature was the reflection of 'Little Ice Age'.LIN Xiao ZHU LiPing WANG Yong WANG JunBo XIE ManPing JU JianTing Roland MAUSBACHER Antje SCHWALB 2008Chinese Science Bulletin2008,53,19:14
2西藏纳木错湖芯正构烷烃及其反映的8.4ka以来的环境变化显示文摘采用索氏抽提法提取纳木错NMLC-1孔湖芯沉积物中的正构烷烃,利用GC/MS进行了测试。在已经建立的深度一年代曲线基础上,通过分析正构烷烃的组成与含量,结合TOC,TN和CaCO3等环境代用指标,重建了纳木错湖区约8.4ka以来的环境变化历史。结果表明:约8.4-6.7kaBP期间,环境较温暖,降水呈增加趋势,末期变冷干。约6.7-2.9ka BP期间可分为两个亚期,早期温暖湿润,至6.0ka BP左右达到环境最适宜期;晚期温度波动降低,陆生植被和沉水植物退化,以3.0ka BP左右的冷事件结束。约2.9ka BP-现在,冷暖交替,1.4ka BP左右开始趋于干燥,600-400a BP间的降温体现了小冰期特征。林晓 朱立平 汪勇 王君波 谢曼平 鞠建廷 Roland Mausbacher Antje Schwalb 2008科学通报2008,53,19:8
38.4ka以来纳木错湖芯介形类组合的环境变化意义(英文)显示文摘A 332-cm long lacustrine core was drilled in the Nam Co in the central-southern part of the Tibetan Plateau. From the core, 15 species of ostracods (Crustacea: Ostracoda), which belong to 6 genera have been identified. According to the variations of the ostracod assemblages and the ostracods ecological features, which are sensitive to the changing environment, three main stages can be distinguished as follows: Stage I was from 8400 to 6800 a BP, during which the climate was cold-humid, and the lake depth changed from shallow to deep. Stage II was from 6400 to 2500 a BP, during which the climate changed from warm-humid to cold-humid, and then to cold-dry. The lake depth gradually became deep. The shifting of climate, from wet-cold to dry-cold during this period, had constructed the basis of present environment in the Nam Co. Stage III was from 2500 a BP to the present, which showed a trait of lake depth increasing. At the earlier period of this stage, the climate kept as cold-dry as that in the former stage, but the salinity of the lake increased. At the later period of this stage, the degree of cold-dry was enhanced, and the activities of land surface runoff tended to be weakened. Our research also found that the peak values of ostracods with black shell was coherent with the maximum production of the ostracods, and agreed with the increasing sedimentary water dynamics. This indicated that the ostracods with black shell was simultaneous with the high prolificacy of ostracod, and transported from other places. The abundance of Candona juvenile shells reflected the high mortality of that kind of ostracods under an unfavorable condition. This was probably a result of the rapid change of water dynamics of sedimentary environment.谢曼平 朱立平 彭萍 王君波 汪勇 SCHWALB Antje 2009Journal of Geographical Sciences2009,19,4:4
4A TAXONOMICAL AND ECOLOGICAL OVERVIEW OF RECENT AND HOLOCENE OSTRACODES OF THE NAM CO REGION, SOUTHERN TIBET显示文摘We present a list of living and (sub) fossil Ostracoda (Crustacea) from Holocene sediments from Lake NamCo,Southern Tibet, including descriptions, distribution and ecological data of the important taxa from the Nam Cocatchment. Species associations from lake surface sediments, sediment cores and outcrop samples consist of eight speciesincluding Candona candida ( O.F. Müller, 1776 ) , Candona xizangensis ( Huang, 1982 ) , Eucypris afghanistanensis( Hartmann, 1964) , Fabaeformiscandona danielopoli ( Yin & Martens, 1997 ) , Ilyocypris cf. mongolica ( Martens, 1991 ) ,? Leucocythere dorsotuberosa ( Huang, 1982 ) , Leucocytherella sinensis ( Huang, 1982 ) and Limnocythere inopinata ( Baird,1843). The dominant species are ? L. dorsotuberosa and L. sinensis. They show morphological variations with different degreesof ornamentation. We regard the variable noding and rib formation as intraspecific variability possibly driven byenvironmental factors. In general,the number and degree of ribs increases with water depth in ? L. dorsotuberosa. Thus,theornamentation may present a means to reconstruct(paleo) water depths. Our list is intended to serve as a taxonomical andpaleoecological primer for future paleolimnological work.C. Wrozyna P. Frenzel Manping Xie Liping Zhu A. Schwalb 2009第四纪研究2009,29,4:3
5Validation of geometric models for fisheye lenses显示文摘D. Schneider E. Schwalbe H.-G. Maas 2009ISPRS Journal of Photogrammetry and Remote Sensing2009,,3:2
6Matrix metalloproteinase- 8 and - 9 are increased at the site of abdominal aortic aneurysm rupture显示文摘Wilson WR Anderton M Schwalbe EC 2006Circulation2006,113,3:1
7Numerical Analyses of Sthenth Mis-match Effect on Local Stresses for Ideally Plastic Materials显示文摘KIM Y J SCHWALBE K H 2004Engineering Fracture Mechanics2004,71,78:1
8Matrix metalloproteinase-8 and-9 are increased at the site of abdominal aortic aneurysm rupture显示文摘Wilson WR Anderton M Schwalbe EC 2006Circulation2006,113,3:1
9Comparison of several fatigue crack propagation laws with experimental results显示文摘SCHWALBE K H 1974Engineering Fracture Mechanics1974,6,:1
10Deep Brain Stimulation for Treatment-Resistant Depression显示文摘Helen S. Mayberg Andres M. Lozano Valerie Voon Heather E. McNeely David Seminowicz Clement Hamani Jason M. Schwalb Sidney H. Kennedy 2005Neuron2005,,5:1
11Effect of weld metal mis-match on toughness requirements: some simple analytical considerations using the engineering treatment model(ETM) 显示文摘Schwalbe K H 1992International Journal of Fracture1992,56,3:1
12Expression of 92-kDa type IV collagenase correlates with angiogenic markers and poor survival in head and neck squamous cell carcinoma显示文摘Riedel F Gotte K Schwalb J 2000Int J Oncol2000,17,6:1
13Zermelo and the early history of game theory显示文摘Schwalbe U Walker P 2001Games and Economic Behavior2001,34,09:1
14Expression of 92-kD a type Ⅳ collagenase neck scorrehtes with angiogonic markers and poor survival in head and quamous cell carcinoma显示文摘Riedel F Cote K Schwalb J 0,,06:1
15Subtractive cloning and characterization of DRAL, a novel LIM-domain protein down-regulated in rhabdomyosarcoma显示文摘Genini M Schwalbe P Scholl FA 1997DNA Cell Biol1997,16,4:1
16Expression of 92 kDa type IV collagenase correlates with angiogenie markers and poor survival in head and neck squamous cell carcinoma显示文摘Riedel F Gotte K Schwalb J 2000Int J Oncol2000,17,6:1
17Emergency of vancomycin resistance in coagulase negative staphylococci显示文摘Schwalbe RS Stapleton JT Gillegan PH 1987N Engl J Med1987,316,:1
18Isolation of genes differentially expressed in human primary myoblasts and embryonal rhabdomyosarcoma显示文摘GENINI M SCHWALBE P SCHOLL F A 1996Int J Cancer1996,66,4:1
19Expression of 92-kDa type Ⅳ collagenase correlates with angiogenesis markers and poor survival in head and neck squamous cell carcinoma显示文摘Riedel F Gotte K Schwalb J 2000Int J Oncol2000,17,6:1
20Subtractive cloning and characterization of DRAL,a novel LIM-domain protein down-regulated in rhabdomyosarcoma显示文摘Genini M Schwalbe P Scholl FA 1997DNA Cell Biol1997,16,4:1
返回顶部 每页显示:
共15页 首页 上一页 第1页 下一页 末页 /15 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