Zobrazeno 1 - 10 of 1 070 pro vyhledávání: '"R, Gebhardt"'
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Akademický článek
Chromophores and chemical composition of brown carbon characterized at an urban kerbside by excitation–emission spectroscopy and mass spectrometry
Autor: F. Jiang, J. Song, J. Bauer, L. Gao, M. Vallon, R. Gebhardt, T. Leisner, S. Norra, H. Saathoff
Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 14971-14986 (2022)
The optical properties, chemical composition, and potential chromophores of brown carbon (BrC) aerosol particles were studied during typical summertime and wintertime at a kerbside in downtown Karlsruhe, a city in central Europe. The average absorpti
Externí odkaz: https://doaj.org/article/1095194aab3b4e69912dc8cbf3f03fa3
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2
Akademický článek
Proton beam quality enhancement by spectral phase control of a PW-class laser system
Autor: T. Ziegler, D. Albach, C. Bernert, S. Bock, F.-E. Brack, T. E. Cowan, N. P. Dover, M. Garten, L. Gaus, R. Gebhardt, I. Goethel, U. Helbig, A. Irman, H. Kiriyama, T. Kluge, A. Kon, S. Kraft, F. Kroll, M. Loeser, J. Metzkes-Ng, M. Nishiuchi, L. Obst-Huebl, T. Püschel, M. Rehwald, H.-P. Schlenvoigt, U. Schramm, K. Zeil
Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
Abstract We report on experimental investigations of proton acceleration from solid foils irradiated with PW-class laser-pulses, where highest proton cut-off energies were achieved for temporal pulse parameters that varied significantly from those of
Externí odkaz: https://doaj.org/article/e3f76523dd594bf78c86935a340aa976
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4
Akademický článek
Chronic postthoracotomy pain in transapical transcatheter aortic valve replacement
Autor: Brian R Gebhardt, Ankit Jain, Sarah A Basaham, Farhad Zahedi, Stefan Ianchulev, Larry H Brinckerhoff, John G Augoustides, Prakash A Patel, Andrea Tsai, Frederick C Cobey
Publikováno v: Annals of Cardiac Anaesthesia, Vol 22, Iss 3, Pp 239-245 (2019)
Objective: Chronic postthoracotomy pain (CPTP) is a persistent, occasionally debilitating pain lasting >2 months following thoracic surgery. This study investigates for the first time the prevalence and clinical impact of CPTP in patients who have un
Externí odkaz: https://doaj.org/article/c133e548fcce4c158a4dae436dcf864b
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5
Akademický článek
Demonstration of a beam loaded nanocoulomb-class laser wakefield accelerator
Autor: J. P. Couperus, R. Pausch, A. Köhler, O. Zarini, J. M. Krämer, M. Garten, A. Huebl, R. Gebhardt, U. Helbig, S. Bock, K. Zeil, A. Debus, M. Bussmann, U. Schramm, A. Irman
Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Higher beam quality and stability are desired in laser-plasma accelerators for their applications in compact light sources. Here the authors demonstrate in laser plasma wakefield electron acceleration that the beam loading effect can be employed to i
Externí odkaz: https://doaj.org/article/8dc66a89420f49329ab919d98f9bf9bf
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6
Cluster-induced desorption/ionization mass spectrometry of highlighter ink: unambiguous identification of dyes and degradation processes based on fragmentation-free desorption
Autor: Karolin Bomhardt, Pascal Schneider, Marcus Rohnke, Christoph R. Gebhardt, Michael Dürr
Publikováno v: The Analyst. 147:333-340
The soft nature of cluster-induced desorption/ionization allows for unambiguous identification of highlighter inks and the discrimination of different degradation processes by means of mass spectrometry.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c25d04c60525063a4faa6b544740c81b
https://doi.org/10.1039/d1an01588e
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10
Akademický článek
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