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222.157  Articles
1 of 22.217 pages  |  10  records  |  more records»
The article presents the results of the research on the effect of growth biostimulants «Vermybiomah», «Vermyiodis» and «Vermystym» on the antioxidant activity of inflorescences of aqueous and alcohol extracts of Matricaria recutita L. plants of the cultiv... see more

There was determined the integral antioxidant activity of water and alcohol extracts of racemes of Calendula officinalis L. plants of the variety “Poliova krasunya”. Plants were cultivated in Precarpathian zone of Ukraine at the learning-research plot of ... see more

Was proposed two potentiometric methods for determining peroxodisulfuric acid during electrolysis of sulfuric acid (potentiometric titration method and direct potentiometry), based on its interaction with a known excess of a solution Fe2+.

Polyoxyethylated sorbitans (polysorbates) are widely used in the chemical, pharmaceutical, and cosmetic industries, but only quantitative determination is used mainly for chromatographic methods. In this paper, the results of the development and testing o... see more

Polyoxyethylated sorbitans (polysorbates) are widely used in the chemical, pharmaceutical, and cosmetic industries, but only quantitative determination is used mainly for chromatographic methods. In this paper, the results of the development and testing o... see more

Aim. To develop the project of quality control methods for the leader compound among derivatives of [1,2,4]triazolo[4,3-a]quinazoline-5(4H)-ones, namely 4-benzyl-1-{4-[4-(4-methoxyphenyl)-piperazin-1-yl]-4-oxobutyl}-[1,2,4]triazolo[4,3-a]quinazolin-(4H)-o... see more

Polyoxyethylated sorbitans (polysorbates) are widely used in the chemical, pharmaceutical, and cosmetic industries, but only quantitative determination is used mainly for chromatographic methods. In this paper, the results of the development and testing o... see more

Potentiometry is one of method on measuring metals based on cell potential. Measurements using potentiometry are divided into comparative cells and concentration cells. Concentration cells are measurements of a cell's potential by using two solu... see more

Iron in oxidation states (+2 and +3) is very essential element for human body, and its concentration significantly altered in cardio vascular disease. So the aim of the present work is to study the interaction of Fe(II) and Fe(III) with very commonly used... see more

1 of 22.217 pages  |  10  records  |  more records»