This study aimed to characterize the influence of acute renal artery stenosis on cyclooxygenase-2 (COX-2) and renin expression in the juxtaglomerular apparatus. For this purpose, male Sprague-Dawley rats received a left renal artery clip, and COX-2 mRNA, COX-2 immunoreactivity, plasma renin activity, and renin mRNA levels were determined. COX-2 mRNA and COX-2 immunoreactivity in the macula dens...

Mycorrbizal symbiosis is critical to growth of many warmseason prairie grass seedlings, but its effect on regrowth of rbizomes has not been determined. As forage species, the effect of grazing on the symbiosis is also important. when the impact of mycorrbizae on regrowth of Andropogon germ&i Vit. rhizomes was assessed, A. germ& rhizomes collected from the field and grown with mycorrbizal inocul...

This paper analyzes the transmission of voice and data over an 802.11 Wireless Local Area Network (WLAN). The data is transmitted in a contention based access period, while the voice samples are transmitted during a contention free period, based on a polling scheme. Because statistical multiplexing can be utilized, speech may be outdated when a poll arrives. The portion of outdated speech is th...

We show tight upper and lower bounds for switching lemmas obtained by the action of random p-restrictions on boolean functions that can be expressed as decision trees in which every vertex is at a distance of at most t from some leaf, also called t-clipped decision trees. More specifically, we show the following: 1. If a boolean function f can be expressed as a t-clipped decision tree, then und...

Introduction. The best treatment for unruptured middle cerebral artery (MCA) aneurysms is unclear. We perform a meta-analysis of recent publications to evaluate the results of unruptured MCA aneurysms treated with surgical clipping and endovascular coiling. Methods. A PubMed search for articles published between January 2004 and November 2013 was performed. The R statistical software package wa...

Learning in a perceptron having a discrete weight space, where each weight can take 2L+1 different values, is examined analytically and numerically. The learning algorithm is based on the training of the continuous perceptron and prediction following the clipped weights. The learning is described by a new set of order parameters, composed of the overlaps between the teacher and the continuous/c...

AIM To understand the late anatomical results of surgically treated intracranial aneurysms (IA's) and to investigate the incidence of recurrent, de novo aneurysms, the natural history of residual aneurysms, and the morphological changes in temporarily clipped vascular segments. MATERIAL AND METHODS A total of 117 patients underwent screening with digital subtraction angiography (DSA) or compu...

One of the critical challenges in multicarrier-based systems is peak to average power ratio (PAPR). Recently, Filter Bank Multicarrier (FBMC) proved be a promising candidate that can replace traditional orthogonal multiplexing division (OFDM) scheme due its better spectral efficiency, reducing both inter-channel interference (ICI) and PAPR. Due their advantages PAPR without impacting BER, Hadam...