Chemical treatment of end-of-life PVC at high temperature often results in the formation of polyacetylene and eventually aromatic char. These insoluble conjugated polymers lead to industrial reactor blockages, and limit the efficiency in recycling chlorinated plastic waste. To address this challenge, a solvent-based tandem dehydrochlorination-hydrogenation process is proposed for the conversion of PVC to a saturated polymer backbone.
View Article and Find Full Text PDFThe catalytic conversion of crude glycerol to biopropene was investigated. A bifunctional Ru-ionic liquid system showed a high tolerance for common crude glycerol impurities like water, salts and methanol. After optimizing both dehydration and olefin selectivity, a 82% biopropene yield (94% selectivity) was obtained directly from industrial waste glycerol.
View Article and Find Full Text PDFBackground: The knowledge of circulating HCV genotypes and subtypes in a country is crucial to guide antiviral therapy and to understand local epidemiology. Studies investigating circulating HCV genotypes and their trends have been conducted in Belgium. However they are outdated, lack nationwide representativeness or were not conducted in the general population.
View Article and Find Full Text PDFBackground: Metabolic syndrome (MetS) comprises a spectrum of clinical phenotypes in which dyslipidemia, dysglycemia and hypertension are clustered and where all share a high level of oxidative stress and an increased risk of cardiovascular disease. This study examines the effect of a nutritional supplement combining red yeast rice and olive fruit extract on the lipid profile and on oxidative stress in a population of patients with MetS.
Methods: In a double blind placebo controlled randomized trial, 50 persons with MetS, as defined by the ATPIII criteria, received the study product or placebo for 8 weeks.
Objectives: Sexually transmitted infections are a significant cause of genital disease, infertility and hospital admissions. The economic impact is high. An accurate diagnosis is often difficult and time consuming.
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