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تعداد نتایج: 10788520 فیلتر نتایج به سال:
A novel wideband uniplanar electromagnetic bandgap structure with curved line bridges (C-EBG) is proposed to be used in power planes for suppressed ground bounce noise (GBN) and improved signal integrity. Compared with a conventional uniplanar electromagnetic bandgap structure with straight line bridges (S-EBG), the CEBG structure significantly increases the equivalent inductance with less spli...
a hydatid cyst is a zoonotic infection caused by the larval forms of mostly the echinococcus granulosus. in humans, the most common site of cyst development is the liver (60%), followed by the lungs (20%), and much less commonly in other organs such as kidney, spleen, brain, and other soft tissues. the localization of cysts in muscles and subcutaneous is very rare. we report a case of 38-year-o...
Introduction: Plastic deformation of long bones can occur at any age, but is several times more common in children than in adults. This situation in adults is so rare that even a single case can be reported. The cause of the lower incidence in adults is the larger mineral content of adult bones relative to water with smaller haversian canals in comparison to children. Case report: Here we rep...
BACKGROUND Regarding children aged ≤ 10 years, only a few international studies were conducted to determine the prevalence of and risk factors for back pain. Although other studies on the older Portuguese children point to prevalence between 17% and 39%, none exists for this specific age-group. Thus, the aim of this study was conducted to establish the prevalence of and risk factors for back pa...
abstract nowadaysphotovoltaic solar cells (pvs) areacknowledged the fastest growing energy technology in the word, however, they only account for only fraction of current global renewable energy capacity. it isrecognized that this incomplete market penetration has been largely a result of the technology’sexcessive cost. so researchers are trying to find innovative, economic way with theaim of ...
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