نتایج جستجو برای: induced shift

تعداد نتایج: 1102465  

حق پرست, عباس, خوش گرد, کریم, رضائی, محمد,

Background and purpose: Nowadays High-intensity focused ultrasound (HIFU) as non-ionizing radiation is used for cancer treatment. Ultrasound beams when crossing the border of two environments are refracted causing decrease in the beam focusing within a tumor. Also, it may induce damage to normal tissues. In this study, we evaluated the focal depth shift induced by ultrasonic beam refraction. ...

Journal: :medical journal of islamic republic of iran 0
masoumeh ghiasvand occupational medicine research center, iran university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: occupational medicine research center ramin heshmat endocrinology and metabolism research center (emrc), tehran university of medical sciences,tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)سازمان های دیگر: endocrinology and metabolism research center (emrc) koroush soleimani aviation medicine doctor, civil aviation organization, tehran, iran.

abstract   background: irregular working hours, including night work and shift work, have been found to be associated with alteration in various levels of biochemical factors. and some studies have showed association between shift work and blood biochemical disturbances in blood. in this epidemiological study we investigated, whether regular schedule of working hours can minimize the associated...

2008
F G S L Brandão M J Hartmann

We propose a new method to produce selfand cross-Kerr photonic nonlinearities, using light-induced Stark shifts due to the interaction of a cavity mode with atoms. The proposed experimental set-up is simpler than in previous approaches, while the strength of the nonlinearity obtained with a single atom is the same as in the setting based on electromagnetically induced transparency. Furthermore ...

2014
Bente E. Moen Siri Waage Elena Ronda Nils Magerøy Ståle Pallesen Bjørn Bjorvatn

Background: An association between spontaneous abortions and shift work has been suggested, but present research results are conflicting. The aim of the study is to evaluate the relationship between spontaneous abortions among nurses, shift schedules, and nights worked. Methods: This is a longitudinal study where we identified 914 females from a cohort of nurses in Norway who had worked the sam...

Koroush Soleimani, Masoumeh Ghiasvand, Ramin Heshmat,

  Abstract   Background: Irregular Working hours, including night work and shift work, have been   found to be associated with alteration in various levels of biochemical factors. And some studies have showed association between shift work and blood biochemical disturbances in blood. In this epidemiological study we investigated, whether regular schedule of working hours can minimize the associ...

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