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359篇 您的检索式:作者名="Helmberg"
    题名 作者 年代 出处 被引量
1Neoadjuvant chemotherapy with cisplatin, 5-FU, and leucovorin (PLF) in locally advanced gastric cancer: a prospective phase II study显示文摘Katja Ott Andreas Sendler Karen Becker Hans-Joachim Dittler Hermann Helmberger Raimonde Busch Christian Kollmannsberger J. Rüdiger Siewert Ulrich Fink 2003Gastric Cancer2003,,3:3
2Source model of the 11th July 2004 Zhongba earthquake revealed from the joint inversion of InSAR and seismological data显示文摘We use interferometric synthetic aperture radar (InSAR) and broadband seismic waveform data to estimate a source model of the 11th July, 2004 M W 6.2 Zhongba earthquake, Tibet of China. This event occurred within the seismically active zone of southwestern Tibetan Plateau where the east-west extension of the upper crust is observed. Because of limitations in one pair of InSAR data available, there are trade-offs among centroid depth, rupture area and amount of slip. Available seismic data tightly constrain the focal mechanism and centroid depth of the earthquake but not the horizontal location. Together, two complementary data sets can be used to identify the actual fault plane, better constrain the slip model and event location. We first use regional seismic waveform to estimate point source mechanism, then InSAR data is used to obtain better location. Finally, a joint inversion of teleseismic P-waves and InSAR data is performed to obtain a distributed model. Our preferred point source mechanism indicates a seismic moment of ~2.2×10 18 N·m (~M W 6.2), a fault plane solution of 171° (342 ° )/42 ° (48 ° )/-83 ° (-97 ° ), corresponding to strike/dip/rake, and a depth of 11 km. The fault plane with strike of 171 ° and dip of 42° is identified as the ruptured fault with the aid of InSAR data. The preferred source model features compact area of slips between depth of 5-11 km and 10 km along strike with maximum slip amplitude of about 1.5 m.Shengji Wei Sidao Ni Xianjie Zha Don Helmberger 2011Earthquake Science2011,24,2:3
3Magnitude and rupture duration from high frequency teleseismic P wave with projected landweber deconvolution显示文摘Earthquake magnitude and rupture duration are among the most important parameters characterizing an earthquake for the purpose of early tsunami warning. While they can be routinely determined from broadband P waveforms with iterative inver- sion procedures, the inversion procedures may fail when the rupture either lasts longer than the interval between P and later arrivals or requires too much time or human intervention. Little contaminated by later arrivals, high frequency P waves are useful for modeling earthquake source processes, though the envelope waveform is affected by strong scattering in lithosphere. With high frequency envelopes from aftershocks as Empirical Green's Function (EGF), the coda effects can be removed and more accurate relative source time function (RSTF) of the main shock can be obtained. Assuming that RSTFs cannot be negative, we use the projected Landweber deconvolution method (PLD) to obtain high frequency RSTFs because PLD method has the advantage of non-negativity, causality, and compactness (finite duration). We are able to determine rupture durations of four large earthquakes: the 2004 Sumatra-Andaman earthquake, the 2005 Nias event, the 2006 Java event, and the 2011 Tokuko earthquake. The rupture durations of the Sumatra-Andaman, Nias, and Tohuko events are found to be around 550, 110, and 120 s respectively, consistent with previous studies. The rupture duration of the Java event is about 130 s, supporting that the Java event is a tsunami earthquake. The magnitudes of these earthquakes are found to depend on both the amplitude and the duration of the deconvolved waveforms, and can be approximated by integrating these waveforms.ZHENG Yong NI SiDao CHEN Yong TAN Ying Don HELMBERGER 2013Science China Earth Sciences2013,56,1:3
4The arterioportal fistula syndrome: Clinicopathologic features, diagnosis, and therapy显示文摘JN Vauthey RJ Tomczak T Helmberger P Gertsch C Forsmark J Caridi A Reed MR Langham GY Lauwers P Goffette J Lerut 1997Gastroenterology1997,,4:2
5Response to radiofrequency ablation of pulmonary tumours: a prospective, intention-to-treat, multicentre clinical trial (the RAPTURE study)显示文摘Riccardo Lencioni Laura Crocetti Roberto Cioni Robert Suh Derek Glenn Daniele Regge Thomas Helmberger Alice R Gillams Andrea Frilling Marcello Ambrogi Carlo Bartolozzi Alfredo Mussi 2008Lancet Oncology2008,,7:2
6Factor mobility and international trade: the case of complementarity显示文摘Schmitz A Helmberger P 1970The American Economic Review1970,,:1
7Moho offset across the northern margin of the Tibetan plateau显示文摘Zhu L Helmberger D V 0,,:1
8Evidence for a ubiquitous seismic discontinuity at the base of the mantle 显示文摘SIDORIN I GURNIS M HELMBERGER DV 1999Science1999,286,:1
9Segmental and subsegmental pulmonary arteries:evaluation with electron -beam versus spiral CT显示文摘Schoepf UJ Helmberger T Holzknecht N 2000Radiolosy2000,214,2:1
10Evidence for a ubiquitous seismic discontinuity at the base of the mantle显示文摘SIDORIN I GURNIS M HELMBERGER D V 1999Science1999,286,:1
11MRI in focal liver disease: a comparison of small and ultrasmall superparamagnetic iron oxide as hepatic contrast agents 显示文摘Mergo P J Engelken JD Helmberger T 1998J Magn ResonImaging1998,8,1:1
12Impact of virtual reality imaging on hepatic liver tumor resection: calculation of risk 显示文摘Rau HG Schauer R Helmberger T 2000Langenbecks Arch Surg2000,385,3:1
13Diagnosis of and Therapy for Hepatocellular Carcinoma显示文摘T. Greten N. Malek S. Schmidt J. Arends P. Bartenstein W. Bechstein T. Bernatik M. Bitzer A. Chavan M. Dollinger D. Domagk O. Drognitz M. Düx S. Farkas G. Folprecht P. Galle M. Gei?ler G. Gerken D. Habermehl T. Helmberger K. Herfarth R. Hoffmann M. Holtma 2013Z Gastroenterol2013,,11:1
14Subsegmental pulmonary emboli:improved detection with thincollimation multi-detector row spiral CT显示文摘Schoepf UJ Holzknecht N Helmberger TK 2002Radiology2002,222,2:1
15Segmental and subsegmental arteries:evaluation with electron-beam versus spiral CT显示文摘Schoepf UJ Helmberger TK Holzknecht N 2000Radiology2000,214,:1
16Antibody-positive paraneoplastic neurologic syndromes: value of CT and PET for tu- mor diagnosis显示文摘Linke R Schroeder M Helmberger T 2004Neurology2004,63,2:1
17Factor Mobilityand International Trade ; The Case of Complementarity显示文摘Schmitz A Helmberger P 1970American Economic Review1970,60,:1
18CT fluoros- copy guided percutaneous vertebroplasty in spinal malig- nancy: technical results, PMMA leakages, and complica- tions in 202 patients 显示文摘Trumm C G Pahl A Helmberger T K 2012Skeletal radiology2012,41,11:1
19Seismic source function and attenuation from local and teleseismic observations of the NTS Event Jorum and Handley显示文摘Helmberger D V Hadley D M 1981Bull Seism Soc Am1981,71,:1
20Semidefinite programming显示文摘Helmberg C 2002European Journal of Operational Research2002,137,3:1
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