نتایج جستجو برای: poly phenols

تعداد نتایج: 91449  

Journal: :jundishapur journal of natural pharmaceutical products 0
kamran mousavi hosseini department of biotechnology, blood transfusion research center, high institute for research and education in transfusion medicine, tehran, ir iran; department of biotechnology, blood transfusion research center, high institute for research and education in transfusion medicine, p. o. box: 14665-1157, tehran, ir iran. tel: +98-2182052160, fax: +98-88601555 mohammad ali jalili department of biochemistry, blood transfusion research center, high institute for research and education in transfusion medicine, tehran, ir iran

background antioxidant compounds have been shown to slow down the development of chemically induced tumors. it has been estimated that most of human cancer cases are due to environmental factors and would be preventable if the main risks could be identified. the potential of vitamin e as a cancer preventive agent has been studied and individuals whose intake of vitamin e was above average showe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده دامپزشکی 1392

مقدمه و هدف : سلول های بنیادی مزانشیمی سلول های پیش ساز چند توان، غیرخون ساز ساکن در مغز استخوان و سایر بافت ها می باشند. پتانسیل تعدیل ایمنی و چند توانی، سلول های بنیادی مزانشیمی را ابزار بسیار مناسبی برای درمان بعضی از بیماری ها ساخته است. به نظر می رسد که تحریک پذیرنده های شبه تول بیان شده در سطح این سلول ها ممکن است، پتانسیل تعدیل ایمنی این سلول ها را تقویت کند. در این تحقیق اثر سلول-های بن...

Journal: :Journal of the American Chemical Society 2011

2018
Lívia Brenelli Fabio M Squina Claus Felby David Cannella

Background The discovery of lignin as activator for the redox enzyme lytic polysaccharide monooxygenases (LPMOs) for the oxidation of cell-wall polysaccharides opens a new scenario for investigation of the interplay between different lignocellulose-degrading enzymes. The lignin-active enzymes in one hand, and the carbohydrate active in the other, are linked through a variety of electrons carrie...

Journal: :The journal of physical chemistry. B 2005
Neil T Hunt Andrew R Turner Klaas Wynne

The ultrafast dynamics of solutions of phenol and two phenol derivatives--hydroquinone (1,4-benzenediol) and pyrocatechol (1,2-benzenediol)--have been studied with Optically Heterodyne-Detected Optical Kerr-Effect (OHD-OKE) spectroscopy. The solvents, methanol and acetonitrile, were selected to provide strong and weak solvent-solute hydrogen-bonding interactions, respectively, while pyrocatecho...

Journal: :Journal of the American Chemical Society 1919

Journal: :Gut 1991
B S Ramakrishna I C Roberts-Thomson P R Pannall W E Roediger

Substantial amounts of phenols are produced in the human colon by bacterial fermentation of protein. In the colonic mucosa of animals, phenols are inactivated predominantly by conjugation with sulphate. The purpose of this study was to confirm sulphation of phenols by isolated colonocytes from man and to evaluate mucosal sulphation in inflammatory bowel disease using the phenol, paracetamol, in...

Journal: :The Journal of organic chemistry 2010
Lauri Lipping Ivar Koppel Ilmar A Koppel Alexander Kolomeitsev Gerd-Volker Röschenthaler Ivo Leito

The study of the polyfluorination and polytrifluoromethylation effects on electronic structure and intrinsic acidities has been performed using DFT B3LYP and NBO calculations for the valence isomers of benzene and phenol, i.e., the structures of prismane, benzvalene, Kekulé, and Dewar systems. Also the isodesmic reaction analysis approach to estimate the effects of the substituents on the acidi...

2013
Hiroki Sugiura Shinichi Demura Yoshinori Nagasawa Shunsuke Yamaji Tamotsu Kitabayashi Shigeki Matsuda Takayoshi Yamada Ning Xu

This study examined the relationship between number of cups of coffee intake and recognition of the effects of coffee intake and its ingredients in young males and females. The subjects included 624 young people (ages 15 24; 359 males, 265 females), who drank coffee habitually. They were classified into three groups on the basis of the number of cups of coffee consumed per day: “one cup,” “two ...

Journal: :iranian chemical communication 2015
abdoulhossien massoudi azam louie omid louie

poly methyl methacrylate (pmma) is the most common material used in prosthodontics. several studies indicate a breakdown of the number of very high resin bases after 2 to 3 years to avoid breaking bass and several attempts have been made, such as altering the chemical structure of resin by adding causes cross linking or copolymerization. the innovative method for improving the physical properti...

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