نتایج جستجو برای: polyols
تعداد نتایج: 955 فیلتر نتایج به سال:
A difluorinated dienophile underwent cycloaddition reactions with a range of furans to afford cycloadducts which could be processed regio- and stereoselectively via episulfonium ions, generated by the reaction between their alkenyl groups and phenylsulfenyl chloride. The oxabicyclic products were oxidised to the phenylsulfonyl level and ring opened via E1(C)B or reductive desulfonative pathways...
Topical application of polyols such as xylitol and fructose accelerated epidermal water-impermeable barrier recovery. The polyoxyethylene/polyoxypropylene dimethyl ether (EPDME) random copolymer accelerates recovery the well. Previous physicochemical studies have demonstrated that these polymer interact with phospholipid membrane. To examine interaction between polyols/polymer lipids in epiderm...
The viability of starved or dying Saccharomyces cerevisiae Y5 cells was extended for up to 1,500 h by adding osmotic supports (0.6 M sorbitol or mannitol) to the starvation media. Replacement of these polyols with 0.3 M KCl, 0.5 M MgSO4, or 0.2 M MgCl2 postponed the death of cells incubated in N-free medium, but accelerated it in distilled water.
The palladium (II)-catalysed reactions of alkenols and aminoalkenols such as oxycarbonylations or bicyclisations are powerful methods for the construction of oxygen and nitrogen-containing heterocyclic compounds. This review highlights recent progress in the development of the asymmetric palladium(II)-catalysed Wacker-type cyclisations of unsaturated polyols and aminoalcohols. The scope, limita...
C-dots (3-5 nm in diameter) obtained by most simple heating of polyols (glycerol, diethylene glycol and PEG 400) show intense blue and green emission (50% quantum yield). Upon modification with TbCl3/EuCl3, energy transfer from the C-dots to the rare-earth metal results in line-type Tb(3+) (green)/Eu(3+) (red) emission with quantum yields up to 85%.
Submit Manuscript | http://medcraveonline.com Abbreviations: Apo E: Apolipoprotein E; DC: Dendritic Cell; FODMAPs: Fermentable Oligosaccharides, Disaccharides, Monosaccharide And Polyols; GALT: Gut-Associated Lymphoid Tissue; HFD: High-Fat Diet; IBD: Inflammatory Bowel Disease; IBS: Irritable Bowel Syndrome; IR: Insulin Resistance; LcS: Lactobacillus Casei Shirota; MAdCAM-1: Mucosal Address in ...
Conventionally, designing rigid polyurethane foams (RPUFs) with improved physico-mechanical properties from new, bio-based polyols is performed by modifying foam formulations via experimentation. However, experimental endeavors are very resource-dependent, costly, cumbersome, time-intensive, waste-producing, and present higher health risks. In this study, an RPUF formulation utilizing a coconut...
Biotechnology Centre, Cranf ield University, Cranfield, Bedford MK43 OAL, UK The entomopathogenic fungi Beauveria bassiana, Metarhizium anisopliae and Paecilomyces farinosus were cultured on solid agar media containing different carbohydrate components (glycerol, glucose, trehalose or starch) at concentrations of < 142.7 g added carbon I-1 for 30 d at 25 "C. The water activity (a, ) of the medi...
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