نتایج جستجو برای: 60

تعداد نتایج: 300875  

Journal: :Journal of the Royal Society of Medicine 2008

Journal: :Mechanical Engineering 2015

Journal: :Scientific and Technical Libraries 2017

Journal: :Physik Journal 1989

2013
Georg Schiemer Michael Friedman

It is a pleasure to edit this issue of The Reasoner and I am grateful to Michael Friedman for agreeing to be interviewed for the purpose. Michael is Frederick P. Rehmus Family Professor of Humanities as well as the executive director of the Center for History and Philosophy of Science (CHPS) at Stanford University. He is primarily known for his contributions in at least two areas: the philosoph...

2006
Tong Liu Arati Ramesh Zhen Ma Sarah K Ward Limei Zhang Graham N George Adel M Talaat James C Sacchettini David P Giedroc

Copper is an essential element that becomes highly cytotoxic when concentrations exceed the capacity of cells to sequester the ion. Here, we identify a new copper-specific repressor (CsoR) of a copper-sensitive operon (cso) in Mycobacterium tuberculosis (Mtb) that is representative of a large, previously uncharacterized family of proteins (DUF156). Electronic and X-ray absorption spectroscopies...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی تهران 1349

چکیده ندارد.

Journal: :iranian journal of medical physics 0
m. j. tahmasebi birgani associate professor, medical physics dept., ahwaz university of medical sciences, ahwaz, iran. m. ghorbani ph.d. student in medical physics, mashhad university of medical sciences, mashhad, iran.

introduction:  on  the  basis  of  percent  depth  dose  (pdd)  calculation,  the  application  of  dosimetry  in  radiotherapy  has  an  important  role  to  play  in  reducing  the  chance  of  tumor  recurrence. the aim of this study is to introduce a new formula for calculating the centeral axis  percent depth doses of cobalt-60 beam.   materials and methods: in the present study, based on ...

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