OBJECTIVE To determine the effect of intraperitoneal (ip) nicotine on the recovery of rats receiving general anesthesia compared with placebo. METHODS The placebo controlled experimental study was conducted in the Faculty of Medicine, Gazi University, Turkey, between April and May 2005. Twenty-one male and 21 female rats were randomly divided into 3 groups. Group C (n=14), comprising a female...

Since the discovery of rapid eye movement (REM) sleep (also known as paradoxical sleep; PS), it is accepted that sleep is an active process. PS is characterized by EEG rhythmic activity resembling that of waking with a disappearance of muscle tone and the occurrence of REMs, in contrast to slow-wave sleep (SWS, also known as non-REM sleep) identified by the presence of delta waves. Here, we rev...

We have designed a carbon nanotube that is selectively permeable to monovalent cations, binds divalent cations and rejects anions. The nanotubes, with an effective radius of 4.53 Å and length of 36 Å, are terminated with hydrogen atoms and are exohydrogenated in two regions near the entrance and exit. Using molecular and stochastic dynamics simulations we examine the free energy, current–voltag...

We establish the existence and stability of multidimensional steady transonic flows with transonic shocks through an infinite nozzle of arbitrary cross-sections, including a slowly varying de Laval nozzle. The transonic flow is governed by the inviscid potential flow equation with supersonic upstream flow at the entrance, uniform subsonic downstream flow at the exit at infinity, and the slip bo...

Tunnels are road transport structures that reduce traffic and expropriation problems, noise, possible damage to animals plants, provide safer, more comfortable, faster transportation for vehicles compared highways. However, some environmental problems occur during tunnel construction. These such as vibration, rock throwing, etc. caused by the blasting process used excavation on buildings people...

Microvolt QRS alternans on the surface ECG, induced with rapid ventricular pacing, has been reported by our group to predict tachycardia (VT) in ischemic cardiomyopathy (ICM). The presence of intracardiac depolarization and its relation VT not defined. To characterize spatial distribution patients ICM, relationship diastolic pathway. Intraoperative mapping was performed 9 ICM VT. Bipolar electr...

OBJECTIVES Our previous work has shown that the symmetric, smooth, convergent shape of the subglottis reduces turbulent airflow at the glottal entrance. Medialization thyroplasty may alter the glottal shape and is very likely to introduce some degree of glottal asymmetry, which could result in increased turbulence and a reduction in voice quality. This study reports the effects of medializing a...

High level coupled-cluster theory, with spin-orbit coupling evaluated via the Breit-Pauli operator in the interacting-states approach, is used to investigate the OH radical reaction with Cl2 and the subsequent reaction HOCl + Cl. The entrance complex, transition state, and exit complex for both reactions have been determined using the CCSD(T) method with correlation consistent basis sets up to ...