نتایج جستجو برای: catechols

تعداد نتایج: 714  

Journal: :Journal of biomedical materials research. Part B, Applied biomaterials 2003
William M Chirdon William J O'Brien Richard E Robertson

Contemporary medical and dental adhesives often have difficulty sticking to wet surfaces or weaken with long-term exposure to water. Substantial research has been dedicated to finding a means of achieving adhesion in an aqueous environment. A study evaluates the adsorption of catechol relative to other chemical groups as means of gauging how effective they may be as adsorptive groups in adhesiv...

Journal: :Applied and environmental microbiology 1996
H Wilkes R Wittich K N Timmis P Fortnagel W Francke

The ability of the dibenzofuran- and dibenzo-p-dioxin-mineralizing bacterium Sphingomonas sp. strain RW1 (R.-M. Wittich, H. Wilkes, V. Sinnwell, W. Francke, and P. Fortnagel, Appl. Environ. Microbiol. 58:1005-1010, 1992) to oxidize chlorinated derivatives of dibenzofuran and dibenzo-p-dioxin was analyzed. Strain RW1 degraded several mono- and dichlorinated dibenzofurans and dibenzo-p-dioxins, b...

2006
Patricia A. Thompson Peter G. Shields Jo I.. Freudenheim Angie Stone John E. Vena James R. Marshall Saxon Graham Rosemary Laughlin Takuma Nemoto Fred F. Kadlubar Christine B. Ambrosone

Polymorphic catechol-0-methyltransferase (COMT) catalyzes the Omethylation of estrogen catechols. In a case-control study, we evaluated the association of the low-activity alÃ-ele(COM7"M") with breast cancer risk. Compared to women with CO/V/7"VlilAal, COMj*t"/M" was associated with an increased risk among premenopausal women [odds ratio (OR), 2.1; confidence interval (CI), 1.4-4.3] but was inv...

Journal: :Clinical chemistry 1985
A H Wu T G Gornet

We compared results for the liquid-chromatographic determination of free norepinephrine and epinephrine in urine after purifying the catechols by the following methods: (a) acid-washed alumina, (b) weak cation-exchange resin (WCX), (c) a combination of weak cation-exchange resin followed by alumina (WCX-alumina), and (d) commercially available phenylboronic acid adsorbent. We evaluated analytic...

1999
B. K. Lustigman J. L. Schnoor H. E. Ensley M. A. Polito K. J. Macek J. J. Caroll D. P. Milazzo S. A. Barraclough

henols and phenolic substances are aromatic hydroxy compounds classified as monohydric (e.g., phenol, cresols [methylphenols], xylenols [dimethylphenols]), dihydric (e.g., catechols [odihydroxybenzenes], resorcinols [m-dihydroxybenzenes]) or polyhydric (with three or more hydroxy groups), depending on the number of hydroxyl groups attached to the aromatic benzene ring (McNeely et al. 1979). The...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید