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156.367  Articles
1 of 15.638 pages  |  10  records  |  more records»
The sunscreens or Sun Protecting Agent is the materials protecting the skin from the exposure to ultraviolet (UV) rays. Amount of Sun Protection Factor shows how many times the subject skin protection can be multiplied under the sun rays without erythema ... see more

This study focused on Making and Testing sample  control as reference material on determination of nitrite content in water and waste water by using UV-Visible Spectrophotometer. Sample control has been made to replaced Certified Reference Materials ... see more

Rice cracker or known as Krupuk puli is the kind of deep-fried crackers in Indonesia that made of rice seasoned with spices and flavor enhancer. Most Rice cracker sellers that peddle their products in the Ngunut traditional market, so that the sellers hav... see more

Sodium benzoate is an organic preservative chemical compound which use is permitted if the amount is below the maximum threshold. This research aims to validate the UV-Vis Spectrophotometry method which will be used to determine sodium benzoate levels in ... see more

The cloud point technique was effectively utilized for extraction and pre-concentration of nickel(II) in urine samples before measurement by UV-Vis spectrophotometer and AAS techniques. The metal response to a para-aminophenol (PAP) reagent in a non-ionic... see more

We present a simple technique to estimate the size of silver nanoparticles (AgNPs) based on uv-vis spectra computationally. To have the nanoparticles, the AgNPs colloid was prepared by chemical reduction technique using 40 mM of tri-sodium citrate dihydra... see more

Star fruits (Averrhoa bilimbi L.) from family of oxalidaceae is a plant which has potential as an antibacterial Staphylococcus aureus and Escherichia coli. Flavonoid are the active compounds from the extract of star fruit which has potential as an antibac... see more

Fiber optic adaptive probe UV-Vis for Genesis 10S has been fabricated to substitute cuvette for real time analysis. Most of standard spectrophotometers UV-Vis (the common type) use cuvette to place sample which is being analyzed. The light pass through th... see more

This study aims to obtain the profile of Thin-Layer Chromatography (TLC) and Ultraviolet-Visible (UV-Vis) spectrophotometry from the ethanol extract of akar kuning stems (Arcangelisia flava) from Central Kalimantan. The TLC method is used with the orienta... see more

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