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174篇 您的检索式:作者名="STEFFEN W"
    题名 作者 年代 出处 被引量
1中德联合冬给措纳湖地区寒区环境变迁研究进展显示文摘青藏高原腹地的内陆湖及其湖相沉积物能够较真实地反映气候变化特征,在高原环境变迁研究中备受中外科学家的关注,2006年8月15日~9月10日,中德联合考察小组对青藏高原东北部的冬给措纳湖一带进行了第四纪冻土、地貌和地质学考察,并对湖岸阶地做了初步的数字高程分析,调查了冬给措纳湖底地形、地貌,采集了湖相沉积物样本,在湖的东岸和西岸发现多年冻土,湖泊西北山谷观察到古冰川活动遗迹,初步推测该湖是由断陷沉降形成,为进一步分析湖区气候和环境变迁,联合小组拟定2007年3月份钻取湖芯.杨思忠 金会军 Bernhard Diekmann Bernd Wünnemann Steffen Mischke 吉延峻 陈建辉 杨奇丽 2006冰川冻土2006,28,6:2
2Animal plant warfare and secondary metabolite evolution显示文摘The enduring discussion,why plants produce secondary metabolites with pharmacologically and toxicologically active towards mammals traces back to the eminent role of medicinal plants in the millennia-old history of manhood.In recent years,the concept of an animal plant warfare emerged,which focused on the co-evolution between plants and herbivores.As a reaction to herbivory,plants developed mechanical defenses such as thorns and hard shells,which paved the way for adapted animal physiques.Plants evolved further defense systems by producing chemicals that exert toxic effects on the animals that ingest them.As a result of this selective pressure,animals developed special enzymes,e.g.cytochrome P450 monooxigenases(CYP450)that metabolize xenobiotic phytochemicals.As a next step in the evolutionary competition between plants and animals,plants evolved to produce non-toxic pro-drugs,which become toxic only after ingestion by animals through metabolization by enzymes such as CYP450.Because these sequestered evolutionary developments call to mind an arms race,the term animal plant warfare has been coined.The evolutionary competition between plants and animals may help to better understand the modes of action of medicinal plants and to foster the efficient and safe use of phytotherapy nowadays.Steffen WÖLL Sun Hee KIM Henry Johannes GRETEN Thomas EFFERTH 2013Natural Products and Bioprospecting2013,3,1:2
3Role of oxidants and antioxidants in atherosclerosis: results of in vitro and in vivo investigations显示文摘SIEKMEIER R STEFFEN C MERZ W 2007Journal of Cardiovascular Pharmacology and Therapeutics2007,12,4:1
4Forward 显示文摘STEFFEN W TSCHIRLEY J 2000IGBP Report2000,49,:1
5The emerging role of Wnt signaling in the pathogenesis of acute myeloid leukemia显示文摘MIKESCH J H STEFFEN B BERDEL W E 2007Leukemia2007,21,8:1
6A strong coupling partitioned approach for fluid-structure interaction with free surfaces显示文摘WOLFGANG A W STEFFEN G EKKEHARD R 0,,:1
7Passive microwave-derived snow melt regions on the Greenland ice sheet 显示文摘Abdalati W Steffen K 1995Geophysical Research Letters1995,22,7:1
8The fundamental diagram of pedestrian movement revisited显示文摘Seyfried A Steffen B Klingsch W 2005Journal of Statistical Mechanics: Theory and Experiment2005,2005,10:1
9Aza uracil and related nucleicacid analogs as inhibitors of axillary bud growth in tobacco显示文摘Schaeffer G W G L Steffens 1965Tobacco Science1965,,9:1
10Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems显示文摘Schimel D S House J I Hibbard K A Bousquet P Ciais P Peylin P Braswell B H Apps M J Baker D Bondeau A Canadell J Churkina C: Cramer W Denning A S Field CB Friedlingstein P Goodale C Heimann M Houghton RA Melillo J M Moore B 3rd Murdiyarso D Noble L Pacala S W Prentice I C Raupach M R Rayner P J Scholes R J Steffen W L Wirth C 2001Nature2001,414,:1
11Effect of estradiol on tissue glycogen metabolism in ex- ercised oophorectomized rats显示文摘Kendrick Z V Steffen C A Rumsey W L 1987J Appl Physiol1987,63,2:1
12Charaterization of the level ,target sites and inheritance of cytosine methylation in tomato nuclear DNA 显示文摘MESSEGURE R GANAL M W STEFFENS J C 1991Lant Mol Biol1991,16,:1
13Comparison of resinite related aromatic biomarker distributions in Cretaceous- Tertiary coals from Canada and Germany显示文摘Heppenheimer H Steffens K Puttmann W 1992Organic Geochemistry1992,18,3:1
14Best-case response times and jitter analysis of real-time tasks显示文摘Bril R J Steffens E F M Verhaegh W F J 2004Journal of Scheduling2004,7,2:1
15The global carbon cycle: A test of our knowledge of the Earth as a system 显示文摘 Scholes R J Boyle E Canadell J Canfield D Elser J Gruber N Hibbard K Hogberg P Linder S Mackenzie F T Moore Ⅲ B Pedersen T Rosenthal Y Seitzinger S Smetacek V Steffen W 2000Science2000,290,:1
16Characterizat ion of the level, target sites and inheritance of cytosine methylation in tomato nuclear DNA显示文摘 Martin W Ganal John C Steffens 1991Plant Molecular Biology1991,16,:1
17A safe operating space for humanity显示文摘ROCKSTRM J STEFFEN W NOONE K 2009Nature2009,461,:1
18The Effect of cage environment and ad libitum fccding on the circadian rhythm behaviour and feed intake of farm mink显示文摘Steffen W Hansen Bente Krogh Hansen Peer Berg 0,,02:1
19Implication of global change for natural and managed ecosystems:a synthesis of GCTE and related research显示文摘STEFFEN W L 1997Global Change Report1997,29,:1
20Comparison of Raman- and neutron-scattering data for glass-forming systems显示文摘SOKOLOV A P BUCHENAU U STEFFEN W 1995Physical Review B1995,52,14:1
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