نتایج جستجو برای: direct synthesis

تعداد نتایج: 819100  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1379

‏‎for the first time nakayama introduced qf-ring. in 1967 carl. faith and elbert a. walker showed that r is qf-ring if and only if each injective right r-module is projective if and only if each injective left r-modules is projective. in 1987 s.k.jain and s.r.lopez-permouth proved that every ring homomorphic images of r has the property that each cyclic s-module is essentialy embeddable in dire...

Journal: :Journal of Nuclear Materials 2019

Journal: :The Journal of Organic Chemistry 2002

Journal: :Journal of the American Chemical Society 1989

Journal: :Journal of Synthetic Organic Chemistry, Japan 2014

Journal: :Synthesis 2022

Abstract In the field of organofluorine chemistry, quest for emergent fluorinated groups is in high demand. particular, scientific community has shown special interest SCF3 residue thanks to its unique properties. Indeed, over last decade, group become a pivotal moiety, as demonstrated by several SCF3-containing compounds interest, and, related that, steadily increasing number synthetic methods...

Ali Morsali, Azadeh Askarinejad Mohammad Amin Alavi

Nanocrystalline ZnO particles were prepared by a novel sonochemical route from zinc acetate and sodium hydroxide without any requirement of calcination steps at high temperature and without surfactants. Variations in several parameters and their effects on the structural (crystal size and morphology) properties of nanoparticles were investigated. Characterizations were carried out by X-Ray ...

Journal: :Journal of Natural Products 2004

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