نتایج جستجو برای: آنتن های bts
تعداد نتایج: 479395 فیلتر نتایج به سال:
The increase of the base transceiver station (BTS) in most urban areas can be traced to the drive by network providers to meet demand for coverage and capacity. In traditional network planning, the final decision of BTS placement is taken by a team of radio planners, this decision is not fool proof against regulatory requirements. In this paper, an intelligent based algorithm for optimal BTS si...
Of the 24 NICE Guideline recommendations relating to CAP, 4 covered subjects not included in the BTS guideline (NICE recommendations 1.1.1, 1.2.12, 1.2.21, 1.2.22). Of the 137 BTS recommendations, 101 were not within the scope of the NICE guideline, 31 overlapped but with no major differences and 5 overlapped with some differences. Each BTS recommendation is annotated with one of the following ...
BACKGROUND The pathomechanics of hip microinstability are not clearly defined but are thought to involve anatomical abnormalities, repetitive forces across the hip, and ligamentous laxity. PURPOSE/HYPOTHESIS The purpose of this study was to explore the relationship between generalized joint hypermobility (GJH) and hip capsular thickness. The hypothesis was that GJH would be predictive of a th...
در این مقاله آنتن صفحه فرنل بالایه دی الکتریک و حلقه های فلزی چاپ شده روی آن در حالت فرستندگی و جریان های معادل مغناطیسی برای میدانهای تابیده شده از تغذیه میدان دور پترن و بهره این آنتن بررسی و میدان تغذیه با مدل مناسبی تقریب زده شده است در این مدل تغذیه بدون مولفه پلاریزاسیون متقابل با بهره متغیر در نظر گرفته شده است این بررسی با نتیجه تجربی ساخت چند نوع آنتن مقایسه شده است .
یکی از عوامل مهم درافزایش کارایی آنتن fzpa،ضریب کارایی فاز این نوع ساختاراست. این ضریب متناسب با تعداد لایه های بکار رفته شده در ساختار fzpa چند لایه و تنوع دی الکتریک مورد استفاده در ساختار چند دی الکتریکی بوده و افزایش آن منجربه افزایش کارایی آنتن میشود . البته در افزایش ضریب کارایی فاز باید محدودیتهای عملی و تئوری را نیز مدنظر داشت لذا طراحی بهینه آنتن منوط به انتخاب مناسب پارامترهای آن می ب...
Modern science of networks has brought significant advances to our understanding of complex systems biology. As a representative model of systems biology, Protein Interaction Networks (PINs) are characterized by a remarkable modular structures, reflecting functional associations between their components. Many methods were proposed to capture cohesive modules so that there is a higher density of...
Sibutramine is a serotonin and norepinephrine reuptake inhibitor, used in the treatment of obesity. In this study, cardiovascular effects of sibutramine (0.9, 3, or 9 mg kg(-1) i.p.) were measured in conscious Sprague-Dawley rats, in the absence and presence of beta- and/or alpha-adrenoceptor antagonism (with propranolol and/or phentolamine, respectively). Sibutramine caused pressor and tachyca...
BACKGROUND In tetralogy of Fallot (TOF), it is well known that postoperative pulmonary regurgitation reduces right ventricular function during long-term follow-up. Complete repair without a transannular patch should help avoid pulmonary regurgitation. Recently, primary complete repair has been preferred to the staged repair with use of a Blalock-Taussig shunt (BTS) even in neonates or small inf...
purpose: to compare the effect of religious fasting on basal tear secretion (bts), tear break up time (tbt) and intraocular pressure (iop) in ramadan 2005. methods: one-hundred fifty-six healthy male volunteers less than 40 years of age from tehran, zahedan, ahvaz, mashhad and tabriz with no ocular and systemic disease participated in this study. weight, urine specific gravity, bts, tbt and iop...
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