نتایج جستجو برای: wooden sleeper
تعداد نتایج: 5522 فیلتر نتایج به سال:
in this paper effects of fractured sleepers on rail track vibration under moving wheelset have been investigated. two parallel rails of the track have been modeled as euler-bernoulli beams on elastic points as rail pads. also sleepers have been modeled as visco-elastic euler-bernoulli beams. it is assumed that, some sleepers under the rail track have been fractured and modeled by two beams. the...
Steven A. Webber, MBChB; Steven E. Lipshultz, MD; Lynn A. Sleeper, ScD; Minmin Lu, MS; James D. Wilkinson, MD; Linda J. Addonizio, MD; Charles E. Canter, MD; Steven D. Colan, MD; Melanie D. Everitt, MD; John Lynn Jefferies, MD; Paul F. Kantor, MD; Jacqueline M. Lamour, MD; Renee Margossian, MD; Elfriede Pahl, MD; Paolo G. Rusconi, MD; Jeffrey A. Towbin, MD; on behalf of the Pediatric Cardiomyop...
S. C. Forbes, L. T. Bish, M. M. Sleeper, W. Mai, H. Sweeney, and G. A. Walter Department of Physical Therapy, University of Florida, Gainesville, FL, United States, Department of Physiology, University of Pennsylvania, Philadelphia, PA, Department of clinical studies, University of Pennsylvania, Philadelphia, PA, School of Veterinary Medicine, University of Florida, Philadelphia, PA, Department...
Introduction: The determination of accurate dose distribution is an issue of fundamental importance in radiotherapy, especially with regard to the fact that the human body is a heterogeneous medium. Therefore, the present study aimed to analyze the density and isodose depth profiles of 6 MV beam in a SP34 slab-wooden dust (pine)-SP34 slab (SWS) heterogeneous phantom. Materials and Methods: Th...
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