mercury and selenium concentrations were analyzed in the muscle and liver of milk shark (a dominant shark species in the persian gulf) from the coast of bandar abbas. a research project was designed to compare the level of accumulation hg and its interaction with se in milk shark. hg concentration for each sample was determined by an advanced mercury analyzer (leco, ama 254) and se was assayed ...

Two novel ternary hybrid nanoparticles (THNp) consisting of graphene oxide (GO) and reduced oxides (rGO) were added to samples DNA. The effect the addition on thermal denaturation DNA was studied by measuring absorbance using a temperature-controlled Perkin Elmer UV spectrophotometer. Adding GO-TiO2-Ag rGO-TiO2-Ag lowered temperature template significantly. affect rate. optimal concentrations f...

Contamination by heavy metals of soil, water and agricultural products is currently a major problem environmental pollution in the world. The consumption plants contaminated with can be cause diseases such as cancers, number cases which only growing. objective this study was to determine concentration copper (Cu), chromium (Cr), zinc (Zn), lead (Pb), nickel (Ni), cadmium (Cd) from vegetable far...

The aim of this study was to determine the level of heavy metals such as copper, iron, manganese, zinc, lead, nickel, cadmium and chromium concentrated in Juglans regia bark and leaf samples from different localities in Artvin, Turkey. Analysis of the heavy metals Cu, Fe, Mn, Zn, Pb, Ni, Cd and Cr in samples was carried out by inductively coupled plasma optical emission spectroscopy (ICP-OES; P...

Tolfenamic acid Form I (CAS no.13710195, >98% purity) was purchased from Sigma Aldrich and used without further purification. TA Form II was crystallised by crash cooling an ethyl acetate solution (3.45 g TA Form I and 50.00 g of ethyl acetate) to 283.15 K. Both forms were isolated as pure phases as judged by their powder X-ray diffraction (PXRD) patterns. Ethyl acetate (EtOAc), ethanol and 2-p...

All reactions were carried out with magnetic stirring under an atmosphere of argon in oven-dried glassware. Methanol was purchased from Sigma-Aldrich and stored in an anhydrous atmosphere. Sodium acetate was purchased from Aldrich and stored under anhydrous atmosphere. H NMR spectra were recorded on Varian 400 MHz spectrometer at ambient temperature or a Bruker Avance III 500 (500 MHz). Data is...

Image lag degrades image quality in cone-beam CT (CBCT), resulting in contrast reduction, lack of CT number accuracy and uniformity, and skin-line artifacts. The magnitude of such degradation and the extent to which imaging performance can be improved by means of a lag correction method were investigated. Measurements were performed using a radiotherapy CBCT guidance system (Elekta Synergy XVI,...

PURPOSE Petroleum refinery workers are exposed to the carcinogens benzene and 1,3-butadiene. Declining exposures have been reported internationally but information on current exposure in the Swedish refinery industry is limited. The aim was to examine refinery workers' personal exposure to benzene and 1,3-butadiene and increase awareness of exposure conditions by collaboration with involved ref...