The reactivity of the protonated and hydroxylated sphalerite (1 1 0) surface with xanthate was simulated using the density functional theory (DFT). The difference between the energy of the lowest unoccupied molecular orbital of the sphalerite surface and the energy of the highest occupied molecular orbital of xanthate (  was used to compare the reaction capability of xanthate with fresh and fun...

background due to its progressive nature in all aspects of life, addiction endangers the health of individuals, families and the society. objectives the purpose of this study was to determine the role of self-regulation and affective control in predicting interpersonal reactivity of drug addicts. materials and methods this research is a correlation study. the statistical population of this stud...

the chick model is a useful research tool to investigate the development of the enteric nervous system (ens). recognition of appropriate markers for detection of chick enteric ganglia will allow better utilization of this model to study abnormalities of the ens. this study aimed to validate a set of antibodies for avian ens studies on wax sections. the specimens were taken from jejunum and colo...

background : antivenom is still widely used in the treatment of envenomation as there are no vaccines or other effective agents available against animal venoms. recently, neurotoxins named birtoxin family have been described from parabuthus transvaalicus and androctonus crassicauda. the aim of the present study was to test the antibirtoxin antibodies for their ability to neutralize the lethal e...

objective(s): brucella spp. are facultative intracellular pathogens which can stay alive and multiply in professional and nonprofessional phagocytes. immunity against brucella melitensis involves antigen-specific cd4+ and cd8+ t-cells activation and humoral immune responses. due to negative aspects of live attenuated vaccines, much attention has been focused on finding brucella-protective antig...

angiotensin-converting enzyme (ace) inhibitors including quinapril could exert a protective effect on cardiovascular system through endothelial system in normoglycemic and diabetic rats. the present experimental work was designed to study the vascular reactivity of aortic ring segments isolated from streptozotocin (stz)-diabetic rats treated for 4 weeks with nitro-l-arginine-methyl ester (l-nam...

in this work, the structural and electronic properties of folic acid molecule on functionalized (7,0)zigzag single-walled carbon nanotube was studied in gas phase on the basis of density functionaltheory (dft). furthermore, covalent interaction of folic acid with single-walled carbon nanotube wasinvestigated and its quantum molecular descriptors and binding energies were calculated. the dftb3ly...

In the Persian Gulf region, conditions are highly favorable for ozone air pollution and the region is a hot spot of photochemical smog. The vast activities in processing oil and gas play a major role in it. It was found that the elevated concentrations of reactive hydrocarbons co-emitted with nitrogen oxides from Hydrocarbon Processing facilities lead to substantial ozone production. South Pars...

Background and Objective: Alzheimer’s disease (AD) is a multifactorial disease with debilitating consequences and few therapeutic strategies exist for it. With regard to antioxidant capacity and anti-β-amyloid polymerization potential of ellagic acid, this study was conducted to evaluate the effect of this substance on enhanced acetylcholinesterase reactivity in an experimental model of Alzheim...