نتایج جستجو برای: switch sleeper
تعداد نتایج: 60866 فیلتر نتایج به سال:
In this paper, a new transformerless buck-boost converter based on ZETA converter is introduced. The proposed converter has the ZETA converter advantages such as, buck-boost capability and input to output DC insulation. The suggested converter voltage gain is higher than the classic ZETA converter. In the presented converter, only one main switch is utilized. The proposed converter offers low v...
Daphne T. Hsu, MD; Victor Zak, PhD; Lynn Mahony, MD; Lynn A. Sleeper, ScD; Andrew M. Atz, MD; Jami C. Levine, MD; Piers C. Barker, MD; Chitra Ravishankar, MD; Brian W. McCrindle, MD; Richard V. Williams, MD; Karen Altmann, MD; Nancy S. Ghanayem, MD; Renee Margossian, MD; Wendy K. Chung, MD; William L. Border, MBChB, MPH; Gail D. Pearson, MD, ScD; Mario P. Stylianou, PhD; Seema Mital, MD; for th...
the periodic trimming of the long hairs growing at the distal end of the tail -switch trimming- is humane alternative of tail docking. the purpose of this study was to determine the influence of switch trimming on somatic cell count (scc), california mastitis test (cmt) and udder cleanliness of lactating cows in a free-stall dairy farm. in the present study, 219 healthy, pregnant holstein cows ...
Herein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids S. microcephalus and Somniosus pacificus can be genetically distinguished usin...
ONE OF THE GREAT PUZZLES OF SLEEP IS THE EXTENT TO WHICH THE SLEEPER IS AWARE OF EVENTS IN THEIR EXTERNAL ENVIRONMENT. Information processing capabilities at sleep onset and across various depths of sleep are of interest to a general audience, including psychologists, philosophers, and those in the medical field (particularly anesthesiologists). Awareness during sleep is relevant for studies of...
• Increased consumer focus on sleep by education, regulation and patient selfawareness.7 Sleep medicine is a relatively new field that was officially recognized in the 1960s. Today, an estimated 50 million to 70 million Americans suffer from sleep-related problems.1 The first sleep disorder clinic was opened in 19702 at Stanford University by William Dement, MD. Today more than 2,000 sleep cent...
This paper describes the passive Qswitch, based on polymer and organic dye BDN, of a pulsed Nd:YAG laser. Pulses of 27ns duration and peak power of 1.7MW for initial transmission of Q-switch 18.4% 0 T = have been obtained. We have obtained Q-switching efficiency of 77% for train of pulses of 31 and 76.2% 0 T = at the pump energy of 98J. We have also obtained the dependency of laser pulse charac...
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