نتایج جستجو برای: vis spectrophotometry
تعداد نتایج: 31365 فیلتر نتایج به سال:
Background: MSG has become one of the most widely used food flavorings in world, FDA (Food and Drug Administration) reported an average per capita intake United States 550 mg / day 1973. The use as a additive been regulated by its use. WHO. This rule stipulates that daily consumption person should not exceed safe threshold 120 kg day. is proven to be risk factor for obesity. increase body weigh...
Introduction: Selaginella species have been used widely for the treatment of inflammatory diseases, diabetes and cancer. In this study, the contents of the total flavonoids and amentoflavone in five Selaginella plant drugs [Selaginella moellendorffii Hieron. (SM), Selaginella delicatula (Desv.) Alston (SD), Selaginella uncinata (Desv.) Spring (SU), Selaginella heterostachys Baker (SH) and Selag...
This paper reports an investigation of the microwave-assisted synthesis of silver nanoparticles (Ag NPs) using extract of stinky bean (Parkia speciosa Hassk) pods (BP). The formation of Ag NPs was identified by instrumental analysis consists of UV-vis spectrophotometry, Fourier-transform infrared (FTIR) spectrophotometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM...
In the present study, a simple and efficient extraction method based on dispersive liquid-liquid microextraction prior to UV-Vis spectrophotometry was developed for the preconcentration and determination of copper ions in environmental samples. Briefly, cupric ions (Cu II) were reduced to cuprous (Cu I) with addition of hydroxyl amine hydrochloride and formed hydrophobic chelates with neocuproi...
This study describes the fabrication of two types of multilayered coatings onto titanium by electrostatic self-assembly (ESA), using deoxyribosenucleic acid (DNA) as the anionic polyelectrolyte and poly-d-lysine (PDL) or poly(allylamine hydrochloride) (PAH) as the cationic polyelectrolyte. Both coatings were characterized using UV-vis spectrophotometry, atomic force microscopy (AFM), X-ray phot...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید