An average Reynolds equation for predicting the effects of deterministic periodic roughness, taking JFO mass flow preserving cavitation model into account, is introduced based upon double scale analysis approach. This average Reynolds equation can be used both for a microscopic interasperity cavitation and a macroscopic one. The validity of such a model is verified by numerical experiments both...

N umerous studies have been conducted about the determinants of tax evasion. In all of these studies, this phenomenon has been taken into account in the framework of balanced budget and a non-oil economy. In this study the determinants are examined by extending an endogenous growth model and considering two cases for the government budget in an oil-exporting country along with its budget d...

SINCE THE INTRODUCTION OF brachial artery reactivity testing in 1992 by Celermajer et al. (1), the measurement of endothelial function with the use of high-frequency ultrasonography of the brachial artery has proven to be an effective research tool for the assessment of cardiovascular risk (16). To date, 12 publications have demonstrated that endothelial dysfunction as measured by impaired flow...

DEBATE ON THE IONIC BASIS of automaticity in the sinoatrial node (SAN) has persisted since the onset of the field of cardiac cellular electrophysiology, with the favored theory replaced or refined periodically (see Refs. 1, 16, 17, 21, 24–26). For many years, the accepted concept was that of a decaying repolarizing K current (IK2) against the background of a constant inward current (22). In the...

The monoclinic unit cell of Bis(hydrazineH) pyrazine-2,3-dicarboxylate contains singly protonated hydrazine cations and doubly deprotonated pyrazine-2,3-dicarboxylate anions. Atoms forming the pyrazine ring are coplanar (r.m.s. 0.0075(1) Å). Carboxylate groups form dihedral angles with the pyrazine ring of 1.7(2)° (C7/O1/O2) and 89.3(2)° (C8/O3/O4). An extended hydrogen bond network is observed...

We sought to elucidate the mechanism of mitral regurgitation (MR) in dilated cardiomyopathy (DCM). Quantitative two-dimensional echocardiographic examinations were performed in 27 patients, 18 with DCM (nine with MR on physical examination, nine without MR) and nine without underlying heart disease. The MR and "no MR" patients were clinically comparable. Spatial reconstructions from multiple ap...

As many Korean universities have recommended the implementation of mobile learning (m-learning) for various reasons, the number of such tertiary learning opportunities has steadily grown. However, little research has investigated the factors affecting university students’ adoption and use of m-learning. A sample of 288 Konkuk university students participated in the research.The process by which...

To get insight on archaeal nitrogen signaling and on haloadaptation of the nitrogen/carbon/energy-signaling protein PII, we determined crystal structures of recombinantly produced GlnK2 from the extreme halophilic archaea Haloferax mediterranei, complexed with AMP or with the PII effectors ADP or ATP, at respective resolutions of 1.49, 1.45 and 2.60 Å. A unique A cc ep te d A rt ic le This arti...

s * denotes a student presenting the poster 1. *Examining the evolution of the regulatory circuit controlling secondary metabolism and development in Aspergillus Abigail Lind, Jennifer Wisecaver, Timothy Smith, Xuehan Feng, Ana Calvo, Antonis Rokas 1) Biomedical Informatics, Vanderbilt University, Nashville, TN.; 2) Biological Sciences, Vanderbilt University, Nashville, TN; 3) Biological Scienc...