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88.853  Articles
1 of 8.886 pages  |  10  records  |  more records»
A library of some novel classes of pyrano[2,3-c]pyrazole-3-carboxylates was synthesized by employing uncatalyzed domino four-component reaction using diethyloxaloacetate, hydrazine hydrate, aldehydes and malononitrile in refluxing of ethanol-acetic acid s... see more

Introduction. In Ukraine there are four species of plants of the genus Agrimonia L. Of all species, the most common is Agrimonia eupatoria L. The plant has a wide range of pharmacological activity – hepatoprotective, cho­leretic, astringent, anti-inflamma... see more

We describe a one-pot four component synthesis of pyrano[2,3-c]pyrazoles from hydrazine hydrate or phenyl hydrazine, ethyl acetoacetate, an aldehyde, and malononitrile in the presence of catalytic amounts of a caffeine as a green catalyst in water at 50 º... see more

Based on the analyzed sources it has been determined that from the position of the above stated understanding of the phenomenon of human health the components of a healthy lifestyle include various elements related to all areas of health – physical, menta... see more

Introduction. In Ukraine there are four species of plants of the genus Agrimonia L. Of all species, the most common is Agrimonia eupatoria L. The plant has a wide range of pharmacological activity – hepatoprotective, cho­leretic, astringent, anti-inflamma... see more

    Peels are the wastes produced when yam and plantain are processed for human consumption.  This study evaluated the potential use of these wastes as energy feedstocks by conducting thermal decomposition studies in a thermogravimetr... see more

Based on the analyzed sources it has been determined that from the position of the above stated understanding of the phenomenon of human health the components of a healthy lifestyle include various elements related to all areas of health – physical, menta... see more

A sustainable, green one-pot process for the synthesis of dihydropyrimidinones (DHPMs) derivatives by a three-component reaction of ß-ketoester derivatives, aldehyde and urea or thiourea over the alkali-treated H-ZSM-5 zeolite under ball-milling was devel... see more

The purpose of this study is to define and describe the semantic components of the verbalised concept “flirting” as a component of ludic competence in the linguistic consciousness of the Russian-speaking people from Eastern Ukraine.The main method of the ... see more

1 of 8.886 pages  |  10  records  |  more records»