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235篇 您的检索式:作者名="Keyes K"
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1Carbon and Strontium Isotopes of Late Palaeozoic Marine Carbonates in the Upper Yangtze Platform,Southwest China显示文摘238 marine carbonate samples were collected from seven sedimentary sections ofthe entire late Palaeozoic (Permian, Carboniferous and Devonian) in the Upper Yangtze Plat-form, southwest China. Based on the absence of cathodoluminescence and very low Mn (gener-ally<50 ppm) contents of the samples, it is thought that they contain information on the orig-inal sea water geochemistry. The results of isotopic analyses of these samples are presented interms of δ13C and 87Sr/86Sr ratios versus geological time. The strontium data, consistent withother similar data based on samples from North America, Europe, Africa and other areas inAsia, support the notion of a global consistency in strontium isotope composition of marinecarbonates. The strontium data exhibit three intervals of relatively low 87Sr/86Sr ratios in thelate Middle Devonian to early Late Devonian, Early Carboniferous and Early Permian, corre-sponding to global eustatic high sea level stands. The lowest 87Sr/86Sr ratio recorded in theLate Permian was probably caused by substantial basalt eruptions in the Upper Yangtze Plat-form at the time. Three corresponding periods of relatively high δ13C values at roughly the samethe intervals were caused by a relatively high rate of accumulation of organic carbon duringsea level rises at these times. The deposition of coal was probably responsible for the increaseof sea water δ13C at other times. The δ13C values drop dramatically near theDevonian/Carboniferous, Carboniferous/Permian and Permian/Triassic boundaries, con-sistent with other similar data, which further support the notion that geological time boundariesare associated with mass extinction and subsequent rejuvenation.Huang Sijing and Zhou Shaohua State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology, Chengdu, 610059, Sichuan, China Geological Institute, University of Copenhagen, Oster Voldgade 10,DK-1350 Copenhagen K,Denmark 1997Acta Geologica Sinica(English Edition)1997,71,3:11
2饮食、营养及癌症风险:已知与前景显示文摘几十年来科学家们就认为,营养在癌症发展中起着重要的作用。早在20世纪60年代就有流行病学研究显示,不同人群的癌症发病率差别非常大,而且从癌症低发国家移民到高发国家后,移民们的癌症发病率可能上升到与移民国家原住民的癌症发病率相当,甚至更高1-2。这些观察结果提示环境是导致癌症发生的重要因素。Timothy J Key Kathryn E Bradbury Aurora Perez-Comago Rashmi Sinha Konstantinos K Tsilidis Shoichiro Tsugane 徐欣悦(译) 严雪敏(校) 2020英国医学杂志中文版2020,23,7:5
3Characteristic of acoustic emission during stress corrosion cracking of inconel 600 alloy显示文摘Key Y S In S K Young K Y 1997Scripta Materialia1997,37,:1
4Post-collisional magmatism in the central East African orogen: The Maevarano suite of north Madagascm显示文摘Goodenough K M Thomas R J De Waele B Key R M Schofield D I Bauer W Tucker R D Kafahatelo J M Rabrimanana M Ralison A V Randriamananjma T 2010Lithos2010,116,12:1
5Electrical image ofpassive mantle upwelling beneath the northern East PacificRise 显示文摘KEY K CONSTABLE S LIU L 2013 2013Nature2013,495,7442:1
6Circulating angiogenic growth factor levels in mice bearing human tumors using luminex multiplex technology显示文摘KEYES KA MANN L COX K 2003Cancer Chemother Pharmacol2003,51,:1
7Detection of florfenicol resistance genes in Escherichia coli isolated from sick chickens显示文摘KEYES K HUDSON C MAURER J J 2000Antimicrob Agents Chemother2000,44,:1
8On the interaction ofarchitecture and algorithm in the domain-based parallelization of anunstructured-grid incompressible flow code显示文摘KAUSHIK D K KEYES D E SMITH B F 1998Contemporary Math-ematics1998,218,:1
9Positron emission tomography in the evaluation of laryngeal carcinoma显示文摘MCGUIRT W F GREVEN K M KEYES J W Jr 1995Ann Otol Rhinol Laryngol1995,104,41:1
102D marine controlled-source electromagnetic modeling (Part 1): An adaptive finite-element algorithm 显示文摘LI Y KEY K 2007Geophysics2007,72,2:1
11Air pollution and lung cancer incidence in 17 European cohorts: prospective analyses from the European Study of Cohorts for Air Pollution Effects (ESCAPE) 显示文摘Raaschou-Nielsen 0 Andersen ZJ Beelen R Samoli E Stafoggia M Weinmayr G Hoffmann B Fischer P Nieuwenhuijsen MJ Brunekreef B Xun WW Katsouyanni K Dimakopoulou K Sommar J Forsberg B Modig L Oudin A Oftedal B Schwarze PE Nafstad p De Faire U Pedersen NL Ostenson CG Fratiglioni L Penell J Korek M Pershagen G Eriksen KT Serensen M Tjenneland A Ellermann T Eeftens M Peeters PH Meliefste K Wang M Bueno-de-Mesquita B Key TJ de Hoogh K Concin H Nagel G Yilier A Grioni S Krogh y Tsai MY Ricceri F Sacerdote C Galassi C Migliore E Ranzi A Cesaroni G Badaloni C Forastiere F Tamayo I Amiano P Dorronsoro M Trichopoulou A Bamia C Yineis p Hoek G 2013Lancet Oncol2013,14,9:1
12Applied regression analysis and multivariable methods显示文摘Keyes T K 2001Technometrics2001,43,1:1
13Assessing depression with the MMPI and MMPI- 2显示文摘Gross K Keyes M D Greene R I 2000Journel of personality assessment2000,75,3:1
14Endogenous estrogen and postmenopausal breast cancer: a quantitative review显示文摘Thomas H V Reeves G K Key T J 1997Cancer Causes Control1997,8,:1
15Political Cost Incentives for Earnings Management in the Cable Televison Industry 显示文摘Key K G 1997Journal of accounting and economics1997,,23:1
16Management and Organization Challenges to Technology: S-Curve Change Management显示文摘Keys ·K 1997International Journal of Technology Management1997,14,:1
17Biomass distribution and above-and below-ground production in young and mature Abies amabilis zone ecosystems of the Washington Cascades显示文摘Grier C C Vogt K A Keyes M R 1981Canadian Journal of Forest Research1981,11,:1
18Toxicity and physiological effects of brominated flame retardant PBDE - 47 on two life stages of grass shrimp, palaemonetes pugio 显示文摘Key P B Chung K W Hoguet J 2008Science of the Total Environ- ment2008,399,13:1
19Melt-rich channelobserved at the lithosphere-asthenosphere boundary 显示文摘NAIF S KEY K CONSTABLE S 2013 2013Nature2013,495,7441:1
20A novel structural design of CNx-Fe3 O4 as support to immobilize Pd for catalytic oxidation of formic acid显示文摘JIA J WANG R WANG H JI S KEY J LINKOV V SHI K LEI Z 2011Catal Commun2011,16,1:1
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