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Berge, Jean-Pascal,Kiet, Pham-Quoc,Arnaud, Muller-Feuga,Durand, Patrick,DubacQ, Jean-Paul 영남대학교 해양과학연구소 2000 국제심포지움 일정 및 발표논문집 Vol.2000 No.1
Recent advances have been done in the identification, isolation and biological evaluation of use of several kinds of molecules from various algal sources. We aim to give the state of some of the current research done in this domains on both polysaccharides from the cell wall and lipids which are both know as possible sources for valuable molecules with therapeutic effects.
쟝빠스깔베르제(Jean Pascal Berge) 한국조류학회 2000 국제심포지움 일정 및 발표논문집 - 21세기, 해양환경과 해양생물자원의 전망 Vol.- No.-
Recent advances have been done in the identification, isolation and biological evaluation of use of several kinds of molecules from various algal sources. We aim to give the state of some of the current research done in this domains on both polysaccharides from the cell wall and lipids which are both know as possible sources for valuable molecules with therapeutic effects.
Jean Legault,Tommy Perron,Vakhtang Mshvildadze,Karl Girard-Lalancette,Stéphanie Perron,Catherine Laprise,Pascal Sirois,Andre´ Pichette 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.10
Brasenia schreberi Gmel. (Cabombaceae) is an aquatic plant that grows in eastern Asia, Australia, Africa, and North and Central America. B. schreberi leaf extracts were obtained by sequential solvent extraction with dichloromethane, methanol, and water. The antioxidant potential of each extract was assessed by using the oxygen radical absorbance capacity (ORAC) assay. With this method, methanol and water extracts were found to be active with mean±standard deviation values of 7±2 and 5.1±0.5 μmol Trolox^® equivalents (TE)/mg, respectively. Two major phenolic compounds, quercetin-7-O-β-D-glucopyranoside and gallic acid, were respectively isolated from the methanolic and water extracts. Both compounds exhibited antioxidant activities, in particular quercetin-7-O-β-D-glucopyranoside (ORAC value, 18±4 μmol TE/μmol). In contrast to its well-known antioxidant homologue quercetin, quercetin-7-O-β-D-glucopyranoside does not inhibit growth of human fibroblasts (WS-1) or murine macrophages (RAW 264.7). Some flavonoids have been reported to possess beneficial effects in cardiovascular and chronic inflammatory diseases associated with overproduction of nitric oxide. Quercetin-7-O-β-D-glucopyranoside possesses anti-inflammatory activity, inhibiting expression of inducible nitric oxide synthase and release of nitric oxide by lipopolysaccharide-stimulated RAW 264.7 macrophages in a dose-dependent manner. Quercetin-7-O-β-D-glucopyranoside also inhibited overexpression of cyclooxygenase-2 and granulocyte macrophage–colony-stimulating factor.
Elaboration of (Steel/Cemented Carbide) Multimaterial by Powder Metallurgy
Pascal Celine,Chaix Jean-Marc,Dutt Ankur,Lay Sabine,Allibert Colette H. 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
A steel/cemented carbide couple is selected to generate a tough/hard two layers material. Sintering temperature and composition are deduced from phase equilibria, and experimental studies are used to determine optimal conditions. Liquid migration from the hard layer to the tough one is observed. Microstructure evolution during sintering of the tough material (TEM, SEM, image analysis) evidences coupled mechanisms of pore reduction and WC dissolution. Liquid migration, as well as interface crack formation due to differential densification are limited by suitable temperature and time conditions.