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96.265  Articles
1 of 9.627 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

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

The purpose of this study was to analyze the reproducibility and validity of the Badminton Reaction Inhibition Test (BRIT) or the Badminton Reaction Barrier Test. BRIT measures four components: general-domain reaction time, badminton-specific reaction tim... see more

The goal of this work was to characterize the distribution of arsenic in the contaminated sediments using principal component analysis to interpret data generated by a four-step extraction protocol, an operationally defined fractionation procedure used to... see more

Water mediated one-pot, four-component synthesis of substituted 2H-indazolo[2,1-b]phthalazine-triones from dimethyl phthalate, hydrazine, dimedone and aromatic aldehydes have been reported in the presence of p-toluenesulfonic acid (PTSA) as catalyst at 10... see more

The general analysis of the reaction , in the case of longitudinally polarized electron beam, has been performed in the one-photon-nnihilation approximation, accounting for the polarization states of the final nucleon. This analysis is useful for the desc... 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

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

Delayed hemolytic transfusion reactions (DHTR) can be asymptomatic or mimic other conditions and may be misdiagnosed. Failure to recognize this entity could lead to inappropriate treatment and future transfusions reactions. Anti-JKa and anti-JKb are the m... see more

1 of 9.627 pages  |  10  records  |  more records»