this study attempts to investigate the origin of red pigments, time of reddening, and processes responsible for red colouring of the upper miocene age upper red formation, the most important clastic unit in central iran. mineralogical composition and textural properties of the studied sequences show that the upper red formation sequences were not red when deposited, although some parts of red p...

This study attempts to investigate the origin of red pigments, time of reddening, and processes responsible for red colouring of the Upper Miocene age Upper Red Formation, the most important clastic unit in central Iran. Mineralogical composition and textural properties of the studied sequences show that the Upper Red Formation sequences were not red when deposited, although some parts of red p...

conclusions considering the simplicity and efficiency of zero valent iron powder, this method is recommended for removing azo dyes from aqueous environments. results the results of this research showed ph = 3 and contact time = 120 minutes, increasing the zvi dose from 200 to 5000 mg/l in 100 mg/l dye concentration, increased the adsorption efficiency from 36.78% to 97.57%. rr-198 removal follo...

cadmium oxide rhombus-shaped nanostructure was synthesized using hydrothermal process followed by heating treatment. clearly, x-ray diffraction pattern demonstrated the formation of cdo crystalline phase. scanning electron microscopy (sem) showed that the obtained rhombus-like structure is composed of nanoparticles with the average size of 29 nm. in addition, we evaluated adsorption of organic ...

the objective of this study was to assess the microbial contamination of razavi khorasan (iran) hot red pepper. the natural occurrence of aflatoxins and ochratoxin a in those samples was also investigated. for this purpose, 36 samples of this kind of pepper were collected from a farm and sun-dried. standard and established methods were used for both microbiological analyses and mycotoxins ident...

in this paper cufe2o4, nanocrystalline powders were prepared. also, the supported cu ferrite was obtained by impregnation of the supports with cu and fe nitrates solutions, for calcination temperature 450 ºc. the samples were characterized by x-ray powder diffraction (xrd) and fourier transform-infrared spectroscopy (ft-ir). in this investigation photocatalytic degradation of acid red 206 in wa...

shigellosis is an acute gastroenteritis caused by shigella species. the purpose of this study was to determine plasmid profile, antibiotic resistance and phenotypic virulent by congo red between s. flexneri strains. the isolated bacteria were identified by standard bacterial and biochemical methods. plasmids were isolated by alkaline lysis method. antibiotic susceptibility test was performed ac...