wireless sensor networks(wsn) have unique properties that distinguished them from other wireless networks and have special challenges. not-chargeable, not-changeable and limited power supplies of sensor nodes is the most important challenge of this networks, and if the power supply of node expired, a part of data maybe lost. because of the importance of covers in wireless sensors, in this work ...

background : interleukin (il)-4 is a member of t helper 2 (th2) axis produced by t-lymphocyte and mast cell. it has been shown that il-4 expression changes in tumor tissues. the main objective of this study is to investigate the expression of il-4 mrna in patients with laryngeal squamous cell carcinoma (lscc) with or without lymph node involvement. materials and methods: mrna expression of il-4...

comnode classification within membrane residue curves (m-rcms) currently hinges on lyapunov’s theorem and therefore the computation of mathematically complex eigenvalues. this paper presents an alternative criterion for the classification of nodes within m-rcms based on the total membrane flux at node compositions. this paper demonstrates that for a system exhibiting simple permeation behaviour...

localized leishmania lymphadenitis (l.l.l) is a self limited clinical presentation of cutaneous leishmaniasis. microscopic findings in l.l.l are very similar to toxoplasma lymphasenitis. in all cases, an intensive microscopic search should be done for leishman bodies. in this study, we describe our microscopic findings and results of our immnohistochemical (ihc) study with a panel of monoclonal...

this study was conducted on the atrioventricular node (avn) and atrioventricular bundle (avb) of fivefour-month-old ovine fetuses. the histological structure of these components was studied by routinehistological techniques and use of specific staining methods. the avn was caudally located adjacent to theroot of the aorta. it was almost spherical in shape and consisted of twisty cells. the node...

a water distribution network is subjected to various abnormal conditions such as pipe breaks, pump failures, excessive demands etc. in the design period. under such conditions, the network may not be able to meet required demands at desired pressures, and becomes deficient. traditional network analysis assumes nodal demands to be satisfied and available nodal pressures are calculated. however, ...

introduction: recent evidence has indicated that statins can reduce the incidence of both supraventricular and ventricular arrhythmias with various mechanisms. the primary goal of the present study was to determine direct protective role of simvastatin in modifying concealed conduction and the zone of concealment in a simulated model of atrial fibrillation (af) in an isolated atrioventricular (...

introduction: the aim of the present study was to determine direct effects of no modulation on protective electrophysiological properties of atrioventricular node (av node) in the experimental model of af in rabbit. methods: isolated perfused rabbit av nodal preparations were used in two groups. in the first group (n=7), lname (50μm) was applied. in the second group (n=12), different concentrat...

introduction: developmental changes in atrioventricular nodal conduction time and refractoriness have been shown in several studies. prevalence of atrioventricular nodal reentrant tachycardia (avnrt) is clearly age-dependent. the purpose of this study was to determine developmental changes of basic and frequency-dependent electrophysiological properties of the atrioventricular node (av-node) in...

kawasaki disease (kd) is an inflammatory vasculitis. kd is classified into two groups based on clinical characteristics criteria, namely classic and incomplete. cerebral vascular abnormality, especially arterial ischemic stroke (ais) is very rare and unusual in kd. here, we report a 4-year-old boy who was referred to our tertiary pediatric center with abrupt right hemiparesis and aphasia. at ad...