Development of SCAR markers and a semi-selective medium for the quantification of strains Ach 1-1 and 1113-5, two Aureobasidium pullulans potential biocontrol agents.

peer reviewe

Réponse à l'intervention de M. M. Verstraete dans la discussion du mémoire, intitulé :"Nationalité et citoyenneté"

info:eu-repo/semantics/publishe

Bibliometric indicators: quality measurements of scientific publication.

Bibliometrics is a set of mathematical and statistical methods used to analyze and measure the quantity and quality of books, articles, and other forms of publications. There are three types of bibliometric indicators: quantity indicators, which measure the productivity of a particular researcher; quality indicators, which measure the quality (or "performance") of a researcher's output; and structural indicators, which measure connections between publications, authors, and areas of research. Bibliometric indicators are especially important for researchers and organizations, as these measurements are often used in funding decisions, appointments, and promotions of researchers. As more and more scientific discoveries occur and published research results are read and then quoted by other researchers, bibliometric indicators are becoming increasingly important. This article provides an overview of the currently used bibliometric indicators and summarizes the critical elements and characteristics one should be aware of when evaluating the quantity and quality of scientific output.Journal ArticleSCOPUS: re.jinfo:eu-repo/semantics/publishe

Growth and Freeze-Drying Optimization of Bifidobacterium crudilactis

peer reviewedBifidobacterium crudilactis FR62/b/3 belongs to a new population of bifidobacteria isolated from raw milk and raw milk cheese. The objective of this work was to study the large scale culture of the stain and its stability in a dry formulation. Growth rate of Bifidobacterium crudilactis FR62/b/3 was optimal at a pH of 5.0 and a temperature of 37˚C. At a temperature growth of 33˚C and a pH of 5.0, the stationary phase was reached after 22 h, the viable cell number and the mean dry biomass concentration were respectively of 8.3 × 109 CFU/mL and of 2.1 g/L. Resistance of Bifidobacterium crudilactis FR62/b/3 to freeze-drying and effect of a variety of cryoprotectants to maintain the viability were also evaluated. Sorbitol was the most suitable cryoprotectant for freeze-drying as well as storage whereas sucrose and monosodium glutamate were only efficient during storage

Vers une gestion intégrée des contraintes patrimoniales : exemple du flamant rose dans le système rizicole camarguais (Note)

Durieux Laurent, Sandoz Alain, Prosper-Laget Valérie. Vers une gestion intégrée des contraintes patrimoniales : exemple du flamant rose dans le système rizicole camarguais (Note). In: Méditerranée, tome 93, 4-1999. Dynamiques naturelles et gestion des espaces littoraux, sous la direction de Serge Suanez, Mireille Provansal et Carole Bruzzi. pp. 45-48

Abdominal attenuation values on virtual and true unenhanced images obtained with third-generation dual-source dual-energy CT

OBJECTIVE. The purpose of this study is to investigate the magnitude of differences between attenuation values measured on virtual unenhanced images and true unenhanced images obtained using third-generation dual-source dual-energy CT (DECT). SUBJECTS AND METHODS. A total of 83 patients requiring thoracoabdominal CT for cancer workup were included in this prospective study. CT examinations included true unenhanced acquisitions (tube potential, 120 kVp) and arterial and portal phase dual-energy CT (DECT) acquisitions (tube potential, 100 kVp and Sn 150 kVp [where Sn denotes the interposition of a tin filter in the high-energy beam]; tube current-exposure time product, 190 and 95 mAs). Virtual unenhanced images were created using two commercially available DECT postprocessing algorithms, one of which was designed to create liver images (hereafter referred to as VNC1 images) and the other of which was designed to create images of organs containing minor amounts of fat (hereafter referred to as VNC2 images). Attenuation values on the liver, spleen, paraspinal muscles, retroperitoneal fat, renal cortex and medulla, and gallbladder and bladder lumens were measured. RESULTS. The attenuation values of all tissues were significantly different between virtual unenhanced and true unenhanced images (p = < 0.001-0.042), except for the liver and spleen in the portal phase and muscles in both phases. When statistically significant, correlations between these differences and body mass index (weight in kilograms divided by the square of height in meters) depended on the tissue imaged and algorithm used. The percentage of cases in which these differences were 10 HU or greater was 1% for the liver and approximately 5% for the spleen and muscles, regardless of the algorithm and phase, but on VNC1 images it reached approximately 30% for the kidney, 70% for the gallbladder and bladder, and depending on the phase, 40-70% for fat. On VNC2 images, the percentage of cases in which these differences were 20 HU or greater was approximately 90% for fat. CONCLUSION. Abdominal virtual unenhanced images obtained with third-generation dual-source DECT still should not replace true unenhanced images because of substantial differences in attenuation measurements for fluid, fat, and renal tissues.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Description of a central proportioning and delevery systems for bicarbonate dialysis

info:eu-repo/semantics/publishe

Description of a central proportioning and delivery system for bicarbonate dialysis.

Replacement of acetate by bicarbonate in dialysate has been proposed to reduce morbidity during hemodialysis sessions with large-area artificial kidneys. The routine use of such a dialysate raises numerous technical problems which have already been discussed by Sargent et al: (1) accuracy of proportioning of bicarbonate dialysate to achieve a controlled bicarbonate concentration coupled with the monitoring of multiple-stream system; relative insolubility of bicarbonate; (3) stability of concentrated sodium bicarbonate; (4) bacteriostatic properties of these solutions. These problems were solved in an individual three-component dialysate system (Drake-Willok 4015) but although this procedure could theoretically be conversed to a central delivery system, bicarbonate dialysate has not been routinely used in this application since stability of such a dialysate in tanks and long tubings have to be assessed. A system is described in which these problems are solved and which is able to automatically produce bicarbonate dialysate on a large scale, i.e. for 30 simultaneous dialyses.Journal ArticleSCOPUS: ar.jinfo:eu-repo/semantics/publishe

Placental growth hormone and lactogen production by perifused ovine placental explants : regulation by growth hormone-releasing hormone and glucose

International audienc

Rôle des acides aminés dans l'activité antagoniste d'Aureobasidium Pullulans vis-à-vis de la pourriture bleue des pommes en post-récolte

Aureobasidium pullulans (souche Ach1-1) a montré une grande efficacité vis-à-vis de Penicillium expansum agent de la pourriture bleue des pommes en conservation. Le présent travail a été réalisé dans le cadre de l’analyse des mécanismes d’action qui sont les plus impliqués dans son activité antagoniste. Dans des essais in vivo sur pommes blessées, l’effet protecteur de la souche Ach1-1 vis-à-vis de P. expansum a été significativement affaibli par l’ajout dans les blessures de concentrations élevées en acides aminés. L’importance de la réduction étant dépendante de la concentration appliquée, a montré que la compétition pour les acides aminés joue un rôle important dans la suppression de P. expansum. Ce résultat a été appuyé par l’analyse biochimique de la cinétique de l’épuisement des acides aminés dans les blessures des pommes qui a dévoilé que ces composés et particulièrement la sérine, la glycine et l’acide glutamique sont mieux métabolisés par la souche antagoniste que par le pathogène. L’ajout en excès de ces trois acides aminés individuellement dans les blessures des pommes a fortement réduit l’efficacité de la souche Ach1-1 vis-à-vis de P. expansum. Ainsi, ces acides aminés semble être parmi les éléments les plus limitants dans le mécanisme de la compétition. Ces résultats indiquent que l’antagoniste A. pullulans souche Ach 1-1 exerce une activité fongistatique plus que fongicide vis-à-vis de P. expansum et agit par une compétition efficace pour les éléments nutritifs limitants des blessures des pommes et particulièrement les acides aminés sans affecter la viabilité du pathogène