چکیده: در این مقاله، یک آنتن جدید چهارتایی شکافی فشرده برای به­کارگیری در گیرنده­های gps ارائه شده است. ساختار آنتن از چهار عنصر تشعشعی شکافی نیم­طول­موج با یک نوار اتصال کوتاه تشکیل شده است که با اختلاف فازی 90 درجه نسبت به یکدیگر تغذیه می­شوند. ابعاد آنتن ارائه شده 3mm24î24î12 است که در مقایسه با بسیاری از آنتن­های ارائه­شده تاکنون بسیار کوچک­تر است. همچنین آنتن پیشنهادی دارای خلوص قطبش راست­...

It was the aim of the present study to test whey as protective protein for the sperm cell in the long-term boar semen preservation medium TRIXcell. Analyses of sperm cell motility using computer-assisted semen analysis (CASA) indicated that the whey protein Porex has a similar protective effect as bovine serum albumin (BSA) in maintaining viability of stored boar sperm. Boar sperm diluted in TR...

Based on a vast set of in situ data, a first comprehensive overview of the oceanographic characteristics of Baı́a de Todos os Santos (BTS) is provided. BTS is the second largest coastal bay in Brazil (maximum area of 1223 km2 and average depth of 9.8 m), and is located in the northeast Brazil, in the vicinity of Salvador city. The circulation inside the bay is mostly tidally driven and does not ...

For integrable equations which can be solved by the Inverse Scattering Transform, there exist Bäcklund transformations (BTs) [1]. These transformations were first discovered for the Sine-Gordon equation at the end of the 19th century. Usually they are treated as nonlinear superpositions, which allow one to create new solutions of a nonlinear evolution equation from a finite number of known solu...

Although Cellular communication is getting more and more popular in our country present days, but its network improvement is hampered by the crysis of electricity. The recent decision of present Government is that they will not provide any electricity from the grid to any new BTS rooms of any Celluler operator companies like Grammen Phone, Robi, Airtel etc. These companies have to develop their...

Starting in 2013, blood donors must be tested at least using: (1) one monoclonal anti-D and one anti-CDE (alternatively full RhCcEe phenotyping), and (2) all RhD negative donors must be tested for RHD exons 5 and 10 plus one further exonic, or intronic RHD specificity, according to the guidelines of the Blood Transfusion Service of the Swiss Red Cross (BTS SRC). In 2012 an adequate stock of RHD...

The aim of this study was to investigate the effects of storage of semen in different commercial extenders on the pre-freezing and post-thawing quality of boar spermatozoa. Semen was diluted in BTS, Androhep (AH) and Gedil (GD), stored for 24 h at 17°C, and then frozen in accordance with the cryopreservation protocol. Analyses of the quality of spermatozoa included: motility, normal apical ridg...

In this paper, we study the hand-off performance of a wireless system with heterogeneous technologies called iCAR (Integrated Cellular and Ad hoc Relaying). In iCAR, hand-offs can occur not only from a Base Transceiver Station (BTS) to another BTS, but also from a BTS to a so-called Ad hoc Relaying Station (ARS) in the form of relaying, as well as from an ARS back to a BTS. The latter two types...

In 1993, the British Thoracic Society (BTS) issued guidelines for the management of spontaneous pneumothorax. The aim of this study was to determine the level of adherence to and awareness of these guidelines at a London teaching hospital. A retrospective case note audit of 59 episodes of acute spontaneous pneumothorax was performed. In patients undergoing intervention, the initial procedure wa...