نتایج جستجو برای: Relative biological effectiveness

تعداد نتایج: 1130453  

Journal: :iranian journal of radiation research 0
y. yang college of veterinary medicine, chonnam national university, gwangju, republic of korea h.j. lee korea institute of radiological & medical science, seoul, republic of korea h. jang college of veterinary medicine, chonnam national university, gwangju, republic of korea j.h. lee ministry of food and drug safety, osong, republic of korea c. moon college of veterinary medicine, chonnam national university, gwangju, republic of korea j.c. kim college of veterinary medicine, chonnam national university, gwangju, republic of korea

background: the trabecular bone changes in the tibia of c3h/hen mice were measured 12 weeks after whole body irradiation with various doses of fast neutrons (0-2.4 gy) or 137cs-generated gamma-rays (0-6 gy). materials and methods: serum calcium, phosphorus, estradiol concentration and alkaline phosphatase activity were measured. tibiae were analyzed using microcomputed tomography. biomechanical...

2014
Y. Lai S. Pirotta G. Urbinati D. Gerace M. Galli M. Minkov V. Savona A. Badolato

2007
Mani Hossein-Zadeh Kerry J. Vahala

We investigate the impact of the intrinsicof the resonant poles on the performance of multiring-based optical filters and dispersion-compensating devices. We highlight the role of quality factor by defining figures-of-merit for some specific filter configurations.

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2011
Cosmas Mafusire Andrew Forbes

We outline a theory for the calculation of the beam quality factor of an aberrated laser beam. We provide closed-form equations that show that the beam quality factor of an aberrated Gaussian beam depends on all primary aberrations except tilt, defocus, and x-astigmatism. The model is verified experimentally by implementing aberrations as digital holograms in the laboratory.

Journal: :Journal of applied physics 2010
John E Sader Jungchul Lee Scott R Manalis

Energy dissipation experienced by vibrating microcantilever beams immersed in fluid is strongly dependent on the mode of vibration, with quality factors typically increasing with mode number. Recently, we examined energy dissipation in a new class of cantilever device that embeds a microfluidic channel in its interior-the fundamental mode of vibration only was considered. Due to its importance ...

Journal: :Physical review letters 2007
V A Fedotov M Rose S L Prosvirnin N Papasimakis N I Zheludev

We report that a resonance response with a very high quality factor can be achieved in a planar metamaterial by introducing symmetry breaking in the shape of its structural elements, which enables excitation of trapped modes, i.e., modes that are weakly coupled to free space.

2012
Sanjay Kumar Dubey Anubha Gulati Ajay Rana

Over the past few decades, Usability has emerged as an extremely important quality factor. Many methods have so far been proposed for usability evaluation but they lack in one way or another. This paper proposes a method for software usability quantification using the fuzzy multiple criteria weighted average approach. This approach has been chosen due to the highly unpredictable nature of the a...

Journal: :Health physics 1976
R Katz B G Fullerton R A Roth S C Sharma

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