维普中文期刊产品整合服务
5篇 您的检索式:作者名="Peter BAUM"
    题名 作者 年代 出处 被引量
1Quantum model simulations of attosecond electron diffraction显示文摘Ultrafast diffraction with free attosecond electron pulses promises insight into the four-dimensional motion of charge density inatoms,molecules and condensed matter. Here we consider the quantum dynamics of the electron-electron scattering process on anattosecond time scale. By numerically solving the time-dependent two-electron Schrdinger equation,we investigate the interactionof an incoming keV-range electron wavepacket by the bound electron of an aligned H+2 molecule,using a one-dimensional model.Our findings reveal the ratio of elastic to inelastic contributions,the role of exchange interaction,and the influence of the molecularelectron density to diffraction. Momentum transfer during the scattering process,from the incoming to the bound electron mediatedby the nuclei,leaves the bound electron in a state of coherent oscillation with attosecond recurrences. Entanglement causes relatedstate-selective oscillations in the phase shift of the scattered electron. Two scenarios of distinguishable and indistinguishable freeand bound electrons yield equivalent results,irrespective of the electronic spins. This suggests to employ the scenario of distinguishable electrons,which is computationally less demanding. Our findings support the possibility of using electron diffraction forimaging the motion of charge density,but also suggest the application of free electron pulses for inducing attosecond dynamics.Peter BAUM Jrn MANZ Axel SCHILD 2010Science China(Physics,Mechanics & Astronomy)2010,53,6:3
2Resectability of pancreatic adenocarcinoma: assessment using multidetector-row computed tomography with multiplanar reformations显示文摘Elena Manak Susanne Merkel Peter Klein Thomas Papadopoulos Werner A. Bautz Ulrich Baum 2009Abdominal Imaging2009,,1:3
3A novel preoperative inflammatory marker prognostic score in patients with localized and metastatic renal cell carcinoma显示文摘Objective:Several inflammatory markers have been studied as potential biomarkers in renal cell carcinoma(RCC),however few reports have analyzed their prognostic value in aggregate and in non-clear cell histologies.We hypothesize that a combination of specific inflammatory markers into an RCC Inflammatory Score(RISK)could serve as a rigorous prognostic indicator of overall survival(OS)in patients with clear cell and non-clear cell RCC.Methods:Combination of preoperative C-reactive protein(CRP),albumin,erythrocyte sedimentation rate(ESR),corrected calcium,and aspartate transaminase to alanine transaminase(AST/ALT)ratio was used to develop RISK.RISK was developed using grid-search methodology,receiver-operating-characteristic(ROC)analysis,and sensitivity-specificity trade-off analysis.Prognostic value of RISK was analyzed using the KaplaneMeier method and Cox proportional regression models.Predictive accuracy was compared with RISK to Size,Size,Grade,and Necrosis(SSIGN)score,University of California-LOS Angeles(UCLA)Integrated Staging System(UISS),and Leibovich Prognosis Score(LPS).Rishi R.Sekar Dattatraya Patil Yoram Baum Jeffrey Pearl Anna Bausum Mehmet A.Bilen Omer Kucuk Wayne B.Harris Bradley C.Carthon Mehrdad Alemozaffar Christopher P.Filson John G.Pattaras Peter T.Nieh Kenneth Ogan Viraj A.Master 2017Asian Journal of Urology2017,4,4:2
4Mobilizing Crop Biodiversity显示文摘Over the past 70 years,the world has witnessed extraordinary growth in crop productivity,enabled by a suite of technological advances,including higher yielding crop varieties,improved farm management,synthetic agrochemicals,and agricultural mechanization.While this'Green Revolution'intensified crop production,and is credited with reducing famine and malnutrition,its benefits were accompanied by several undesirable collateral effects(Pingali,2012).These include a narrowing of agricultural biodiversity,stemming from increased monoculture and greater reliance on a smaller number of crops and crop varieties for the majority of our calories.This reduction in diversity has created vulnerabilities to pest and disease epidemics,climate variation,and ultimately to human health(Harlan,1972).Susan McCouch Zahra Katy Navabi Michael Abberton Noelle L.Anglin Rosa Lia Barbieri Michael Baum Kirstin Bett Helen Booker Gerald L.Brown Glenn J.Bryan Luigi Cattivelli David Charest Kellye Eversole Marcelo Freitas Kioumars Ghamkhar Dario Grattipaglia Robert Henry Maria Cleria Valadares Inglis Tofazzal Islam Zakaria Kehel Paul J.Kersey Graham J.King Stephen Kresovich Emily Marden Sean Mayes Marie Noelle Ndjiondjiop Henry T.Nguyen Samuel Rezende Paiva Roberto Papa Peter W.B.Phillips Awais Rasheed Christopher Richards Mathieu Flouard Maria Jose Amstalden Sampaio Uwe Scholz Paul D.Shaw Brad Sherman S.Evan Staton Nils Stein Jan Svensson Mark Tester Jose Francisco Montenegro Valls Rajeev Varshney Stephen Visscher Eric von Wettberg Robbie Waugh Peter Wenzl Loren H.Rieseberg 2020Molecular Plant2020,13,10:0
5心跳—空间/航天气球显示文摘通过一个透明的外壳——仿佛一个扩张的胸腔——可见、可闻的心跳被转译为律动的光。COOP HIMMELBLAU(影像) Lisl Ponger(影像) Peter Schnetz(影像) Peter Baum PB(影像) Erwin Reichmann(影像) 2020城市环境设计2020,,4:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 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