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In this study, multi-relay decode-and forward (DAF) cooperative networks employing convolutional coding are studied for asynchronous direct-sequence code-division multiple-access (DS-CDMA) systems over frequency-selective slow fading channels. The authors show that the full benefits of coded cooperative diversity cannot be achieved if no multiuser(More)
—We investigate the performance of cooperative diversity when employed in convolutionally coded direct-sequence code-division multiple-access (DS-CDMA) systems over frequency-selective fading channels. The performance of the coded system is evaluated through bit error rate upper bounds and compared with simulations. In our analysis, we obtain closed form(More)
This article introduces a new surgical method for one-stage reconstruction of the penis. It is applied to the reconstruction of the microphallus as well as to traumatic cases with the residual stump of the amputated penis not less than 3 cm long. By transferring the original glans or the residual penile stump to the anterior portion of the newly(More)
Chromium is commonly found in huge quantities in tannery wastewaters. For this reason, the removal and recovery of the chromium content of tannery wastewaters is crucial for environmental protection and economic reasons. Removal and recovery of chromium were carried out by using low-cost potential adsorbents. For this purpose three types of activated(More)
BACKGROUND Chronic renal failure (CRF) leads in the majority of instances to end stage renal disease (ESRD) requiring renal replacement therapy. Our interest was to evaluate the possible associations of HLA class I and class II antigens with ESRD independent of other factors, in Saudi Arabia population. METHODOLOGY A retrospective study to determine the(More)
Our experience in reconstructive surgery of the penis in 136 cases is reported. The postoperative complication rate was 13.24 percent. Five methods were used: the radial forearm free flap, the superficial inferior epigastric artery flap, the superficial circumflex iliac artery flap, the anterolateral thigh flap, and the combined cutaneous flap. The choice(More)
A qualitative and qualitative weekly study of diazinon in experimental rats after a lethal dose is described. GC/MS and TLC were used for qualitative, and GC/EC for quantitative analysis. The replicate content of diazinon in stomach and intestine (S/I) revealed a high rate of decrease during the first month. The liver (L) content fluctuates through a(More)