Background : Rhodamine B is a synthetic dye that generally used as for paper, textiles or inks. The use of certainly very dangerous health. if directly on the human body will cause irritation respiratory tract and can cancer liver damage. Although there are negative impacts, these dyes still often done, especially food cosmetic products. Purpose This research was conducted to identify determine...

Moringa leaves are part of the moringa plants that contain nutrients. The chemical compounds in very much, one them is beta carotene. Beta carotene a potential source vitamin A and has highest activity all carotenoids. purpose this study was to determine content fresh dry using UV-Vis spectrophotometry method. population leaves, sample leaves. Method analysis research conducted by descriptive r...

A new sensitive, simple, rapid and precise method for simultaneous estimation of paracetamol and aceclofenac in combined tablet dosage form has been developed. The method is based on ratio derivative spectrophotometry. The amplitude in first derivative of the ratio spectra at 256 nm and 268 nm (minima) were selected to determine paracetamol and aceclofenac in combined formulation. The method sh...

In this study, zero-, first-, secondand third-order derivative spectrophotometry methods were developed for the determination of metoprolol in pharmaceutical preparations. In zero order spectrophotometry, absorbance values were measured at 276 nm in zero order spectra of solution of metoprolol in methanol in the range of 240-310 nm. In first derivative spectrophotometry, absorbance values were ...

in this study, silver nanoparticles were synthesized by chemical reduction method at different concentrations of ag colloid in the range of 500-16000 ppm. nanoparticles were deposited by spin coating method on pre-etched glass and si substrates. structural, optical and electrical properties of the samples were studied using scanning electron microscopy equipped with edax, uv-vis spectrophotomet...

BACKGROUND Urinary extracellular vesicles (UEVs) represent an ideal platform for biomarker discovery. They carry different types of RNA species, and reported profile discrepancies related to the presence/absence of 18s and 28s rRNA remain controversial. Moreover, sufficient urinary RNA yields and respective quality RNA profiles are still to be fully established. METHODS UEVs were enriched by ...