نتایج جستجو برای: acetal chemistry

تعداد نتایج: 109309  

Hossein Behmadi, Sahar Niroomand

The reaction of 2-naphthol and also para-substituted phenols with glyoxal in presence of choline chloride: 2 ZnCl2 [ChCl: 2ZnCl2], a deep eutectic solvent (DES), as a green catalyst was studied. The amount of catalyst, solvent type, temperature, and time on the yield of reaction were investigated. It was found that the optimal condition included 10% mol ratio of catalyst (mol percentage of DES ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده علوم انسانی 1390

increasing academic and professional language demands around the world are not a deniable fact. the purpose of this study was to investigate english language needs and communication needs of the chemistry students at master and ph.d. levels at the iranian universities. in this research, different methods were used including un-structured interview, structured interview, and two sets of question...

Journal: : 2022

A spur gear is one of the most common forms precision cylindrical gear. In industry, reducing weight gears while keeping their useful properties has become an even more pressing challenge. As a result, investigators have made many attempts to reduce gears. Despite these efforts, problem still requires research. This study presented gear's modeling and finite element analysis using different mat...

2009
Martha Wheaton Martha Wheaton Betz Domenick P. Coletti David M. Mosser Domenick Coletti

Title of Document: ORBITAL FLOOR REGENERATION USING CYCLIC ACETAL HYDROGELS THROUGH ENHANCED OSTEOGENIC CELL SIGNALING OF MESENCHYMAL STEM CELLS Martha Wheaton Betz, Doctor of Philosophy, 2009 Directed By: Associate Professor John P. Fisher, Fischell Department of Bioengineering Orbital floor fractures are a serious consequence of craniofacial trauma and account for approximately 60-70% of all ...

2003
S. J. THANNHAUSER NICHOLAS F. BONCODDO GERHARD SCHMIDT

Feulgen and Bersin (1) obtained from the hydrolysis products of the acet>al phospholipide present in muscle a mixture of thiosemicarbazones. They suggested that these thiosemicarbazones are derivatives of pahnitic and stearic aldehydes, although t,hey gave no analytical data supporting this view. Anchel and Waelsch (2) obtained from hydrolysates of lipide mixtures from different tissues, includ...

Journal: :The Journal of Antibiotics 1988

Journal: :Berichte der deutschen chemischen Gesellschaft 1908

1997
J. M. Peula F. J. de las Nieves

immunodiagnostic tests. The recent advances in polymer In this work the interaction of an a-CRP IgG protein with science have made it possible to produce uniform latexes functionalized latexes that have acetal groups on their surfaces with desired size and surface characteristics. Thus, it is possihas been studied. Two acetal latexes with similar amounts of ble to obtain latex particles with sp...

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