background: among different pollutants released into the environment, dyes are considered as one of the most dangerous contaminants. in recent years, magnetic nanomaterials have attracted much attention for their dye removal capacity. the aim of this study was to explore the adsorption kinetics of an anionic dye (reactive orange 13 (ro)) by nife2o4 nanoparticles (nife2o4 nps) under various cond...

tmrna (also known as ssra or 10sa rna) is so-named for its dual nature so that can function like trna and mrna. tmrna involved in a trans-translation reaction that truly is a kind of translational quality control system. this process contributes to the recycling of stalled translation complexes at the end of an mrna lacking a stop codon or at an internal mrna cluster of rare codons in a process...

conclusions as a result of the full range uv-vis scanning of the responsible band in the hptlc experiments (200-700 nm), the flavonoid was the most imaginable natural compound. results through the bioassay guided fractionation method, the greatest antibacterial activities were related to the n-hexane extract. it was also revealed that the effective anti-mrsa agent of the assessed plant was a re...

background: the aim of this study was to compare the antibacterial efficacy of endemic satureja khuzistanica jamzad (skj) essential oil as root canal irrigation versus 2.5% sodium hypochlorite and 2% chlorhexidine gluconate.     methods: in current in vitro experimental study, fifty four single-rooted teeth were randomly divided into 6 groups of 9 samples: 2.5% sodium hypochlorite (naocl), 2% c...

background aflatoxin b1 (afb1) is a highly toxic and hepatocarcinogenic metabolite produced by aspergillus species. some natural products are known to kill fungi and destroy toxins and toxin-producing agents. objectives the purpose of this study is to provide experimental data on the antifungal activity of cumin oils and their components that could be considered suitable for application in food...

traditionally, schizophrenia was considered to be a severe psychiatric disorder, with a chronic course and an unfavorable outcome. throughout history, there has been incidence of schizophrenia, roughly one percent of the population, consistently, in every culture. it is generally acknowledged that schizophrenia has multifactorial etiology, with multiple susceptibility genes interacting with env...

organophosphorus compounds are highly toxic chemicals that have application in production of warfare agents and agricultural pesticides. detoxification of areas that have been exposed to these types of materials is of vital importance and several approaches have been used for this purpose. biodegradation of organophosphates is one of these approaches that is in the center of attention due to it...

objective(s) in the present study, the differences in the relaxant effects of aqueous, ethyl acetate and n-butanol fractions of rosa damascena on tracheal smooth muscle of guinea pigs were examined. materials and methods the relaxant effects of three cumulative concentrations of each fraction (0.1, 0.2 and 0.4 g%) in comparison with saline and three cumulative concentrations of theophylline (0....

objective(s) the aim of the present study was to compare the therapeutic indices of several agents used in treatment of inflammatory conditions which included: vitamin e, hydro-alcoholic extracts of glycyrrhiza glabra, matricaria aurea, dexamethasone, piroxicam and diclofenac using wehi-164 fibrosarcoma cells. materials and methods cytotoxicity evaluation was based on vital dye exclusion assay....

background : prosthetic valve endocarditis (pve) is an important cause of morbidity and mortality associated with heart valve replacement surgery. the aim of the present study was to describe the early outcome of treatment in patients with pve in a single center. methods : the data of all the episodes of pve registered at our institution between 2002 and 2007 were collected and analyzed retrosp...