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547篇 您的检索式:作者名="Jennings W"
    题名 作者 年代 出处 被引量
162 kaBP以来湖光岩玛珥湖沉积物有机碳同位素记录及古气候环境意义显示文摘湖光岩玛珥湖HUG B孔岩心记录了62kaBP以来的古气候、古环境变化信息。全岩有机碳同位素组成(δ13CTOC)分析表明,62kaBP以来δ13CTOC值变化比较明显,其变化范围为-28.5‰~-15.5‰。结合孢粉和有机地球化学指标进行综合分析,湖光岩玛珥湖δ13CTOC变化曲线可划分为6个演化阶段:62~58和48~40.5kaBP两个时段的δ13CTOC值偏负,沉积物中有机质主要来源于热带—亚热带地区的陆生C3森林植被,反映了温暖潮湿的气候环境;58~48和40.5~17.2kaBP期间δ13CTOC值明显偏正,沉积物中有机质主要源自C4草本植物,反映了湖光岩地区有效降水量减少、干旱程度增加导致湖光岩玛珥湖湖面下降,大量C4草本植物生长在暴露的湖滨岸;17.2~4kaBP时段内δ13CTOC值尽管存在更加频繁的波动,但总体呈现逐渐偏负的趋势,反映了暖湿和冷干气候多次交替但总体上逐渐变暖、变湿的气候环境;4kaBP以来δ13CTOC值存在逐渐偏正的趋势,虽然不排除人类活动的影响,但很可能反映了干旱程度的再次增加。综合分析表明,有效降水量(降水量-蒸发量)是控制湖光岩玛珥湖地区C3/C4植物相对生物量变化的主导因素。湖光岩玛珥湖有机碳同位素的研究结果支持区域气候环境而不是大气CO2浓度变化是末期冰期以来热带低纬度地区C3/C4植被相对生物量变化的主要原因。刘强 顾兆炎 刘嘉麒 游海涛 吕厚远 储国强 祁向雷 Jorg F W Negendank Jens Mingram Georg Schettler 2005海洋地质与第四纪地质2005,25,2:34
2Response evaluation of chemotherapy in metastatic colorectal cancer by contrast enhanced ultrasound显示文摘AIM:To evaluate whether contrast enhanced ultrasound(CEUS) might also be used for response prediction and early response evaluation in patients receiving bevacizumab based chemotherapy for metastasized colorectal cancer.METHODS:Thirty consecutive patients with non primary resectable liver metastases from colorectal cancer underwent CEUS before treatment(CEUS date 1) and before the second(CEUS date 2) and fourth(CEUS date 3) cycle of bevacizumab based chemotherapy.Three parameters [PEAK,Time to peak(TTP) and RISE RATE]were correlated with radiological response.RESULTS:For neoadjuvant purpose a reduction of tumour mass was required to assume clinical response.Based on these response criteria there was a significant(P < 0.001) correlation in TTP between metastases of responders(9.08 s) and non-responders(14.76 s) archived on CEUS date 1.By calculating a standardized quotient(metastases divided by normal liver tissue) we were able to define a cut off,predicting response with a sensitivity of 92.3 % and a specificity of 100 %.To reflect a palliative intention only those patients with progressive disease were classified as non-responders.In this stetting TTP was also significantly(P < 0.01) different between responders and non-responders.In contrast,Peak and Rise rate did not show any significant difference between responder and non-responder.CONCLUSION:CEUS might serve as a surrogate marker to predict treatment response in patients with metastasized colorectal cancer who receive antiangiogenic therapy.Ramin Schirin-Sokhan Ron Winograd Christoph Roderburg Jhenee Bubenzer Nicole Cabral do ó Dorothee Guggenberger Hartmut Hecker Christian Trautwein Jens J W Tischendorf 2012World Journal of Gastroenterology2012,18,6:16
3Modification of Cullender and Smith equation for more accurate bottom hole pressure calculation in gas wells显示文摘ODEN R D JENNINGS J W 1988Society of Petroleum Engineers1988,35,3:1
4Comparison of nickel-and ironbased oxygen carriers in chemical looping combustion for CO2 capture in power generation显示文摘Jens W Anheden M Yan Jinyue 2005Fuel2005,84,78:1
5Power modeling and low-power design of content addressable memories 显示文摘Hsiao H Y L Wang D H Jen C W 2001Circuits and System2001,4,:1
6A simple fast hybrid pattern-matching algorithm 显示文摘FRANEK F JENNINGS C G SMYTH P W F 2007Journal of Discrete Algorithms2007,4,5:1
7Effect of stabilizer dihedral and static lift on T-Tails flutter显示文摘Jennings W P Berry M A 0,,04:1
8Clinical spectrum of epi- sodic ataxia type 2 显示文摘Jen J Kim G W Baloh R W 2004Neurology2004,62,1:1
9Time-dependent attenuator for dynamic range reduction of lidar signals显示文摘STEFAN L VOLKER W JENS B 1997Appl Opt1997,36,15:1
10Physics and kinetics of alkaline hydrolysis of cationic dyeable poly ( ethylene terephthalate ) (CDPET) and polyethylene glycol (PEG)-modified CDPET polymers: Effects of dimethyl 5-sulfoisophthalate sodium salt / PEG content and the number average molecular weight of the PEG显示文摘Hsiao K J Jen Z F Tang J W 2005J Appl Polym Sci2005,98,2:1
11Robust adaptive array beamforining based on independent component analysis with regularized constraints 显示文摘Chang A C Jen C W SU I J 2007IEICE Transactions on Communication2007,90,7:1
12Carabid beetles (Coleoptera: Carabidae) associated with strip clearcut and dense spruce-fir forests of Maine显示文摘JENNINGS D T HOUSEWEART M W DUNN G A 1986The Coleopterists Bulletin1986,40,3:1
13Mechanisms of cement hydration 显示文摘BULLARD J W JENNINGS H M LIVINGSTON R A 2011Cem Concr Res2011,41,12:1
14TRAVOS: Trust and reputation in the context of inaccurate information sources显示文摘Teacy W Patel J Jennings N R 2006Autonomous Agents and Multi-Agent Systems2006,12,2:1
15A field study of green roof hydrologic and water quality performance 显示文摘Hathway A M Hunt W F Jennings G D 2008Transaction of the ASABE2008,51,1:1
16A Simple Fast Hybrid Pattern-matching Algorithm显示文摘Franek F Jennings C G Smyth P W F 2007Journal of Discrete Algorithms2007,4,5:1
17Repetitive recombinant human bone morphogenetic protein 2 injections improve the callus microarchitecture and mechanical stiffness in a sheep model of distraction osteogenesis 显示文摘Thilo F Frank W Jens N 2012Orthop Rev ( Pavia)2012,4,4:1
18Genetics of familial episodic vertigo and ataxia显示文摘Baloh R W Jen J C 2002Ann N Y Acad Sci2002,956,:1
19TRAVOS: Trust and Reputation in the Context of Inaccurate Information Sources显示文摘Teacy W T Patel J Jennings N R 2006Autonomous Agents and Multi-agent Systems2006,12,2:1
20Independent prognostic value of elevated high-sensitivity C-reactive protein in chronic heart failure显示文摘YIN W H CHEN J W JEN H L 2004Am Heart J2004,147,:1
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