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Now showing items 1301-1310 of 1328
Density of impurity states of hydrogenic impurities in an inverse parabolic quantum well under the magnetic field
(ELSEVIER SCIENCE BV, 2007)
We investigated the effects of the magnetic field on the density of impurity states in a GaAs/GaAlAs inverse parabolic quantum well (lPQW) for different Al concentrations at the well center. The calculations were performed ...
Multicriteria choice of ore transport system for an underground mine: application of PROMETHEE methods
(SOUTH AFRICAN INST MINING METALLURGY, 2004)
The aim of this paper is to demonstrate the implementation of multicriteria analysis in selection of the most suitable underground ore transport system for a chromite mine in Turkey. The related problem includes five ...
Layered feedforward neural network is relevant to empirical physical formula construction: A theoretical analysis and some simulation results
(ELSEVIER SCIENCE BV, 2005)
We theoretically establish that, contrary to superficial observation, constructing an empirical physical formula (or physical law interchangeably) to explain the physical phenomenon is inherently full with several serious ...
Investigation of the relaxant effects of pancuronium, rocuronium, vecuronium and mivacurium on rat thoracic aorta
(LIPPINCOTT WILLIAMS & WILKINS, 2009)
Background and objective Pancuronium, vecuronium, mivacurium and rocuronium are nondepolarizing neuromuscular blocking agents, which are competitive antagonists against acetylcholine at nicotinic receptors, and considered ...
Conjunctival impression cytology in pseudoexfoliative glaucoma and pseudoexfoliation syndrome
(WILEY, 2006)
In this study, ocular surface changes and tear film functions in patients with pseudoexfoliative glaucoma (PEXG) and pseudoexfoliation (PEX) syndrome were evaluated. This study is a randomized, double-blind and prospective ...
Effects of ceftriaxone sodium on in vitro gallbladder contractility in guinea pigs
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004)
Background/Purpose. It has been reported that ceftriaxone may induce the formation of gallstones. Changes of gallbladder motility may play a role in this phenomenon. The present study was designed to analyze the gallbladder ...
Genetic polymorphisms of GSTs and their association with primary brain tumor incidence
(ELSEVIER SCIENCE INC, 2005)
Glutathione S-transferases GSTM1, GSTT1, and GSTP1 are phase II biotransformation enzymes that function on detoxification of a wide range of exogenous agents including carcinogens. It has been shown that genetic variations ...
Effects of magnetic and electric fields on the hydrogenic impurity in an ellipsoidal parabolic quantum dot
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2008)
The binding energy of a hydrogen-like impurity in an ellipsoidal parabolic quantum dot under the magnetic and electric fields have been discussed by using the effective mass approximation and the variational method. We ...
A giant coronary sinus mimicking descending aorta
(ACTA CARDIOLOGICA, 2008)
A 58-year-old male patient was admitted to the emergency service with dyspnoea. The patient underwent several laboratory and imaging tests including echocardiography and a diagnosis of descending aortic aneurysm was ...
Comparison of myocardial performance index versus ratio of isovolumic contraction time/ejection time in left ventricular systolic dysfunction
(SPRINGER, 2007)
Myocardial performance index (MPI) has been regarded as an important parameter in the evaluation of ventricular systolic function in congestive heart failure. This study was designed to investigate the relationship between ...