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412  Articles
1 of 42 pages  |  10  records  |  more records»
The present research has studied the spectral data, thermochemical transformations and hydrolysis of hexafluorosilicates with guanidine containing cations (C22H32Cl2N10)S?F6 (?) and (C21H45N9)(SiF6)1.5 (??) for their potential use as caries-preventive and... see more

Acid sulfate soil contains high acid cations. Palm oil mill effluent (POME) mixed with zeolite can increase pH of acid sulfate soil. Base cations (Ca, K and Mg) on zeolite are exchangeable with H+  and Al3+ ions in acid sulfate soil. The aim of this ... see more

The present research has studied the spectral data, thermochemical transformations and hydrolysis of hexafluorosilicates with guanidine containing cations (C22H32Cl2N10)S?F6 (?) and (C21H45N9)(SiF6)1.5 (??) for their potential use as caries-preventive and... see more

A new co-polymer based on fragments of 2-(2-pyridyl)monoazatriphenylene and 2,5-bis (2-ethylhexyl)-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione was prepared by using the Sonogashira reaction. The photophysical properties of the polymer were... see more

The composition of the reaction mixture after DTTA tert-butyl ester alkylation with 6'-halomethyl-5-phenyl-2,2'-bipyridines was studied. In addition to the target product, DTTA-appended 2,2’-bipyridine, the corresponding 6'-hydroxymethyl-substituted 2,2’-... see more

This study aims to develop recitation-based teaching materials for learning qualitative analysis of cations. The procedure for developing teaching materials adopts the 4-D development model (Define, Design, Develop, Dissemination) from Thiagarajan. The de... see more

Gypsum areas are stressful environments inhabited by gypsophytes, plants that are exclusive for such habitats, and by plants that grow on gypsum but also on other soil types, the so-called gypsovags. To investigate possible differences between gypsovags a... see more

 Received: 26.12.2019Revised: 17.01.2020Accepted: 27.02.2020

When taking the antibiotics of the tetracycline group together with food and drinks the components may decrease bioavailability, the effectiveness of the drug and change the kinetics of its release. A bright example is the interaction of doxycycline with ... see more

1 of 42 pages  |  10  records  |  more records»