نتایج جستجو برای: secondary reaction

تعداد نتایج: 701613  

Journal: :Child Indicators Research 2023

Abstract This study, carried out with 10,795 Compulsory Secondary Education students (Asturias, Spain), seeks to determine what behaviours are considered school bullying, extent they witnessed, and the typical reactions bullying are. To gather data, a 19-item questionnaire was used, high degree of reliability (α = 0.85). Regarding results, most have concept generally related use physical force,...

Journal: :The Journal of the Society of Chemical Industry, Japan 1969

2003
C. L. DERICK HOMER F. SWIFT

In previous communications (1) we reported the phenomenon of secondary reaction to certain strains of green streptococci. Briefly this consists of an inflammatory reaction which appears about the 8th to 10th day after intracutaneous inoculation of rabbits with these microorganisms and at a time after the primary reaction has receded. Because we were unable to obtain the reaction in any species ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1999
hashem sharghi khodabakhsh niknam

the reaction of tertiary, secondary and benzylic alcohols with different nitriles in the presence of alumina-methanesulfonic acid (ama) as a new reagent affords the corresponding amides in good yields (table 1, 2). conversion of 2,6-bis(hydroxymethyl)-4-halo anisoles into corresponding diamides in the range of 68-76% yields (table 3) are also included in this paper.

Dariush Saberi Farid Rohandeh Khodabakhsh Niknam

Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl]ester (SASPSPE) is employed as a recyclable catalyst for the silylation of hydroxyl groups. A good range of primary, secondary alcohols and phenolic hydroxyl groups were effectively converted into their corresponding trimethylsilyl ethers with hexamethyldisilazane in the presence of catalytic amounts of SASPSPE at room temperature with short rea...

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