Search results for "gestion"
showing 10 items of 2604 documents
Effect of simulated gastrointestinal digestion on plant sterols and their oxides in enriched beverages
2013
Abstract This study evaluates the bioaccessibility (percentage of soluble compound available for absorption) of plant sterols (PS) and their oxides (phytosterol oxidation products, POPs) after simulated gastrointestinal digestion in fruit (Fb), milk (M) and fruit-based milk beverages with (FbM a ) or without (FbM b ) tangerine juice. In beverages and their bioaccessible fraction (BF), campesterol, campestanol, stigmasterol, β-sitosterol and sitostanol were detected. Bioaccessibility of total PS ranged between 2.62 and 6.48%, FbM b yielding the highest value, followed by FbM a > Fb > M. Campesterol/campestanol were the most bioaccessible PS. Only oxides of β-sitosterol were detected in beve…
Effects of temperature on gastric evacuation rate and absorption and transport of dietary lipids in sea bass (Dicentrarchus labrax, L.)
1993
Abstract 1. 1. Gastric evacuation rate and lipid absorption and transport were studied in sea bass reared at 25°, 20° and 15°C. 2. 2. An increase in gastric evacuation and a reduction in lipid absorption were observed at the higher temperature. 3. 3. Lowering temperature (15°C), led to a decrease in the rate of gastric emptying, with a prolonged lipid absorption. 4. 4. Relationships between lipid absorption and gastric evacuation are discussed.
Characterizing smart tracking-based self-service technologies (STB SSTs) and their acceptance antecedents : a systematic literature review
2022
This paper introduces smart tracking-based self-service technologies (STB SSTs) as a new category of self-service. STB SSTs allow brand customers to voluntarily perform feedback-seeking that targets their brand-related consumption occurring in a connected environment, provided they consent to share private data with their brand. Despite an increasing deployment, this category of self-service is not well defined in the literature. In addition, we have little understanding of consumer motivations to use these technologies. The present work attempts to fill these gaps by performing an interpretive literature review. Our literaturereview highlights the necessity to distinguish between core and …
L'accessibilità della città storica: aspetti gestionali tra specificità e strategie unitarie
2013
Il superamento della nozione di centro storico impone un ripensamento sulle posizioni consolidate durante gli scorsi decenni, a partire dalla verifica delle stesse idee di centralità e storicità. Le porzioni di città che hanno acquisito un valore storico e culturale non sono circoscrivibili entro precise delimitazioni fisiche o di datazione: ciò rende opportuno un approccio che riesca a tener conto delle loro specificità, all’interno di un quadro più ampio di gestione che comprenda l’intero ambiente costruito e che sia orientato verso strategie realistiche e orientate al lungo termine, all’interno delle quali anche l’istanza della conservazione delle parti storiche risulti più efficace. Leg…
Investor Sentiment and Accruals Anomaly
2017
This paper examines whether investors’ sentiment affectsaccruals anomaly across 15 European countries. In line with recent evidence for the U.S., we find that sentiment causes accruals mispricing across European countries. The effect is pronounced for stocks whose valuations are highly subjective and difficultto arbitrage. Our results also reveal evidence in favor of managers' opportunistic disclosure behavior. The accruals reported are higher in high sentiment periods as compared with low sentiment periods. Our cross-country analysisprovidesevidence that sentiment influences accruals anomaly in countries with weaker outside shareholder rights, lower legal enforcement, lower equity market d…
Effectiveness of microwave based digestion procedures for the demineralization of human milk and infant formulas prior to fluorometric determination …
1996
The use of two types of microwave oven, one domestic (A) and the other specially designed for laboratory (B) for microwave-based digestion, to destroy the organic matter in milk and infant formulas prior to fluorometric determination of selenium is studied in order to check their applicability and reliability. In both systems the best results were obtained using the acid mixture HNO3—H2O2, and additional treatment with perchloric acid (60%) in a Thermoblock. The application of two different microwave-based digestion procedures to infant formulas was free of interferences. In the case of human milk, it was necessary to use the standard addition method. Values obtained for detection and quant…
Les petites histoires extraordinaires des courses ordinaires: vous ne retournerez plus faire vos courses de la même façon après la lecture de cet ouv…
2011
National audience; ...
Some observations on the determination of total heavy metals in sewage sludge by atomic absorption spectrophotometry after a pressurized acid digesti…
1990
Abstract An economical and simple method for the flame atomic absorption spectrometric determination of Cd, Pb, Ni, Cu, Fe, and Zn in sewage sludges is described. Samples are treated with concentrated HNO 3 in a thermal oven using Pyrex glass tubes hermetically sealed with Bakelite screw caps. The effect of the digestion parameters, such as digestion time, acid volume, sample mass, and temperature, were studied. The precision and accuracy of this procedure were evaluated by the analysis of two BCR (Community Bureau of Reference, European Communities) certified sewage sludge samples (CRM 146 and 144).
Flame atomic absorption analysis of gold in jewelry samples
1990
A new procedure is proposed for the determination of gold by flame atomic absorption in jewelry samples. The method is based on the acid digestion of 10 mg of sample in a microwave oven and on the on-line dilution, using a three-way valve. The dynamic range of the technique is extended to 100 mg/l gold solutions and using a weighted bracketing method for the treatment of the results, accuracy errors lower than 2% can be found in the analysis of real samples as compared with those obtained by fire assay. The method is very fast and implies only little damage to the jewelry samples.
Estimation of Arsenic Bioaccessibility in Edible Seaweed by an in Vitro Digestion Method
2003
The aim of this study was to examine the bioaccessibility (maximum soluble concentration in gastrointestinal medium) of total (AsT) and inorganic (AsI) arsenic contents and the effect on them of cooking edible seaweed, a food of great interest because of its high As content. An in vitro gastrointestinal digestion (pepsin, pH 2, and pancreatin−bile extract, pH 7) was applied to obtain the mineral soluble fraction of three seaweeds (Hizikia fusiforme, Porphyra sp., and Enteromorpha sp.). AsT was determined by dry-ashing flow injection hydride generation atomic absorption spectrometry. AsI was determined by acid digestion, solvent extraction, and flow injection hydride generation atomic absorp…