Shahid Beheshti University of Medical Sciences and Health Services

About: Shahid Beheshti University of Medical Sciences and Health Services is a education organization based out in Tehran, Iran. It is known for research contribution in the topics: Population & Medicine. The organization has 19456 authors who have published 33659 publications receiving 365676 citations.

Comment on ``Band structure engineering of graphene by strain: First-principles calculations''

Abstract: In their first-principles calculations of the electronic band structure of graphene under uniaxial strain, Gui, Li, and Zhong, [Phys. Rev. B 78, 075435 (2008)] have found opening of band gaps at the Fermi level. This finding is in conflict with the tight-binding description of graphene which is closed gap for small strains. In this Comment, we present first-principles calculations which refute the claim that strain opens band gaps in graphene.

Effects of ginger capsules on pregnancy, nausea, and vomiting.

Abstract: Objective: The aim of this study was to determine the effects of ginger in nausea and vomiting of pregnancy. Design: This was a single blind clinical trial study, Setting: The study was conducted in a selected prenatal care clinic of Isfahan City hospitals Subjects: The subjects included 67 pregnant women who complained of nausea and vomiting from Isfahan city hospitals participated in the study. Intervention: The participants were randomly assigned to two groups, an experimental group and a control group. The groups were matched according to the age, gestational age, parity, occupational status, and educational level of the participants. The experimental group received ginger 250 mg capsules for 4 days, and the control group received placebo with the same prescription form. Outcome measures: Effects of treatment of nausea were evaluated twice daily for 4 days by a before-and-after treatment questionnaire. Results: The mean ages of the experimental and control groups were 24.1 ± 4.8 and 23.3 ± 5 ...

A retrospective study of poisoning in Tehran.

Abstract: Objective: To examine the causes and majority of poisoning in Tehran. Methods: The 7000 poisoning cases referred to Loghman-Hakim Hospital in Tehran over six months in 1994 were evaluated retrospectively. Results: The overall female to male ratio was 1.8:1. Most poisoning occurred in the age range 2-6 y for children and 21-40 y for adults. Oral ingestion was the most common route of intoxication. In children, boys had a higher frequency of poisoning than girls. Most cases of children were referred to the hospital between 8 am and 8 pm. In adults referred to the hospital, there was little diurnal variation in poisoning presentations. In adults, drugs were the most common cause of intoxication (60.2%). Of these, benzodiazepines (24.5%) were the most frequent, followed by antidepressants (20.5%) and analgesics (18%). Pesticide and opiate intoxications were also commonly observed. In children, after drugs (32.1%), hydrocarbons were the most frequent cause of poisoning (19.2%). Pesticide poisonings wer...