The Critical Finite Size Scaling Relation of the Order-Parameter Probability Distribution for the Three-Dimensional Ising Model on the Creutz Cellular Automaton

We study the order parameter probability distribution at the critical point for the three-dimensional spin-1/2 and spin-1 Ising models on the simple cubic lattice with periodic boundary conditions. The finite size scaling relation for the order parameter probability distribution is tested and verified numerically by microcanonical Creutz cellular automata simulations. The state critical exponent \delta, which characteries the far tail regime of the scaling order parameter probability distribution, is estimated for 3-d Ising models using the cellular automaton simulations at the critical temperature. The results are in good agreement with the monte carlo calculations.Comment: 8 pages 5 figure

The incidence of smoking and risk factors for smoking initiation in medical faculty students: cohort study

BACKGROUND: Medical education requires detailed investigation because it is a period during which the attitudes and behaviors of physicians develop. The purpose of this study was to calculate the yearly smoking prevalence and incidence rates of medical faculty students and to identify the risk factors for adopting smoking behaviour. METHODS: This is a cohort study in which every student was asked about their smoking habits at the time of first registration to the medical faculty, and was monitored every year. Smoking prevalence, yearly incidence of initiation of smoking and average years of smoking were calculated in analysis. RESULTS: At the time of registration, 21.8% of the students smoked. At the end of six years, males had smoked for an average of 2.6 ± 3.0 years and females for 1.0 ± 1.8 years (p < 0.05). Of the 93 medical students who were not smokers at the time of registration, 30 (32.3%) were smokers at the end of the 6 years of the course. CONCLUSION: The first 3 years of medical education are the most risky period for initiation of smoking. We found that factors such as being male, having a smoking friend in the same environment and having a high trait anxiety score were related to the initiation of smoking. Targeted smoking training should be mandatory for students in the Medical Faculty

OLEFIN SELECTIVITIES IN THE ADDITION OF CARBENES

Schoeller W, AKTEKIN N, FRIEGE H. OLEFIN SELECTIVITIES IN THE ADDITION OF CARBENES. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH. 1982;21(12):932-934

Cortical silent period in a patient with focal epilepsy and Parry-Romberg syndrome

Progressive facial hemiatrophy (PFH), Parry-Romberg syndrome, is a rare disorder frequently associated with epilepsy. We describe a 28-year-old man who had PFH and partial epilepsy that was easily controlled with antiepileptic drugs. In accordance with this patient's benign course of seizures, the cortical silent period was prolonged in the symptomatic hemisphere. This finding may represent compensatory interictal mechanisms in epilepsy. (C) 2004 Elsevier Inc. All rights reserved

Late onset polyneuropathy due to organophosphate (DDVP) intoxication

Background: Organophosphate intoxication can cause some well-known life threatening acute neurological complications such as seizures, paralysis, neuromuscular and cardiac conduction disorders. Less often, a predominantly motor and delayed axonal neuropathy can occur. This syndrome is due to inhibition of neuropathy target esterase. Case Report: A 30-year-old woman attempted suicide by drinking approximately 1000mg/kg dimethyl-2,2-dichloro vinyl phosphate (DDVP). After a muscarinic and cholinergic syndrome lasting four days, she developed a purely motor distal axonal polyneuropathy on the fifth week after ingestion confirmed by electroneuromyography and sural nerve biopsy. Neurological examination and electroneuromyography revealed a slight recovery at the end of the 21st month. Conclusion: This case of late onset polyneuropathy caused by organophosphate intoxication had unusual features such as intact sensory nerves and worse prognosis when compared to previously reported cases