Stability of a directional Marangoni flow.

International audienceMarangoni flows result from surface-tension gradients, and these flows occur over finite distances on the surface, but the subsequent secondary flows can be observed on much larger lengthscales. These flows play major roles in various phenomena, from foam dynamics to microswimmer propulsion. We show here that if a Marangoni flow of soluble surfactants is confined laterally, the flow forms an inertial surface jet. A full picture of the flows on the surface is exhibited, and the velocity profile of the jet is predicted analytically, and is successfully compared with the experimental measurements. Moreover, this straight jet eventually destabilizes into meanders. A quantitative comparison between the theory and our experimental observations yields a very good agreement in terms of critical wavelengths. The characterization and understanding of the 2D flows generated by confined Marangoni spreading is a first step to understand the role of inertial effects in the Marangoni flows with and without confinement

Foam coarsening under steady shear : Interplay between bubble rearrangement and film thinning dynamics

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Foam coarsening under a steady shear: interplay between bubble rearrangement and film thinning dynamics

Above a given threshold, foam coarsening is reduced by an applied shear.</jats:p

Stability of a directional Marangoni flow

When a Marangoni flow of soluble surfactants is confined laterally, the flow forms an inertial surface jet which shows meander instabilities. The morphology and the destabilization of this surface jet are analyzed experimentally and theoretically.</p

What can we learn from an unrepresentative population screening for hypertension?

WHAT CAN WE LEARN FROM A UNREPRESENTATIVE POPULATION SCREENING FOR HYPERTENSION ? A. Saint-RemyA, C. Moritz*, J. Narinx*, Ch. Van Severen*, S. Van Steenberge*, A. Wozolek* and JM. KrzesinskiA (A) Nephrology-Hypertension-Transplantation; * Medical student Uliège AIM: May Measurement Month (MMM) survey was initiated by ISH and approached more than 100 countries for contribution to improve awareness of hypertension (HT) which remains a worldwide problem. Present study reports the statistics for a belgian regional screening organized in May 2017 in the University Hospital of Liege. METHOD:468 participants (≥18 years) attended a 4 days screening, they were interviewed to collect: weight, height, antihypertensive treatment, diabetes, smoking, alcohol consumption and history of cv events. Three consecutive BP measurements were done with Omron M6. Participants received advices on how to maintain a good cv health and a card with their BP to share with their physician. Those with high BP (≥140 and/or ≥ 90 mmhg) received explanations on their readings and actions needed. We added questions on Home Blood Pressure (HBP) to assess the frequency of people who practice HBP and the importance they gave it in the management of HT by physicians. RESULTS: 91% of participants were white, mean age: 52.2±18, women: 56%, 10% had diabetes, 23% were current smokers, less than 5% had a history of heart attack or stroke. Alcohol consumption was regular in 40%. As a whole, HT was identified in 23% and 1/3 were treated. In those treated, BP was uncontrolled in 31.5%. No significant difference of cv profile was found between uncontrolled and controlled treated participants. However, the untreated HT were significantly older, had a higher BMI and a higher consumption of alcohol than untreated NT. At home,52 % had an HBP monitor and measured their BP 5 times/month on average. When treated, at least 50% being either controlled or not considered that HBP should be integrated by the physician into the management of their HT. CONCLUSION: Despite the limits of such tool to assess prevalence of HT, screening offered a great opportunity to inform people on HT and cv risks, on how correctly measure BP and on the importance of adherence to treatment

Innovations 2023 en Banque de Sang

L’informatisation de la banque de sang et du laboratoire d’immunologie érythrocytaire a représenté un défi important puisqu’elle a nécessité la paramétrisation de deux logiciels, équation à double inconnue. Ce projet n’aurait pu aboutir sans une formidable collaboration des équipes informatiques et de la banque de sang. ■ SOMMAIRE : • Implémentation d’un nouveau logiciel pour la banque de sang[Implementation of a new software for the blood bank] The computerization of the blood bank and the erythrocyte immunology laboratory represented a major challenge since it required the parameterization of two software packages – an equation with two unknowns. This project would not have been possible without the outstanding collaboration of the IT and blood bank teams

A top 5 list for French general practice

Abstract Background Medical overuse is an issue that has recently gained attention. The “Choosing Wisely” campaign invited each specialty in each country to create its own top five lists of care procedures with a negative benefit-risk balance to promote dialogue between patients and physicians. This study aims to create such a list for French general practice. Methods A panel of general practitioners (GPs) suggested care procedures that they felt ought to be prescribed less. Using the Delphi method, a short list of those suggestions was selected. Systematic literature reviews were performed for each item on the short list. The results were presented to the panel to assist with the final selection of the top five list. Results The panel included 40 GPs. The list includes: i/ antibiotics prescription for acute bronchitis, nasopharyngitis, otitis media with effusion, or uncomplicated influenza, ii/ systematic prostate specific antigen testing in men older than 50, iii/ prescription of cholinesterase inhibitors for mild cognitive impairment and for Alzheimer’s disease and memantine for Alzheimer’s disease, iv/ statins prescription in primary prevention of cardio-vascular risk in older patients, and v/ benzodiazepine or benzodiazepine-like agents prescription for generalised anxiety, insomnia, and for all indications in older patients. Conclusions This study resulted in a French top five list in general practice using a panel of GPs. All the items selected have a negative risk-benefit balance and are frequently prescribed by French general practitioners. This list differs from other top five lists for general practice, reflecting the local medical culture. </jats:sec

A top 5 list for French general practice

International audienceBackground: Medical overuse is an issue that has recently gained attention. The "Choosing Wisely" campaign invited each specialty in each country to create its own top five lists of care procedures with a negative benefit-risk balance to promote dialogue between patients and physicians. This study aims to create such a list for French general practice.Methods: A panel of general practitioners (GPs) suggested care procedures that they felt ought to be prescribed less. Using the Delphi method, a short list of those suggestions was selected. Systematic literature reviews were performed for each item on the short list. The results were presented to the panel to assist with the final selection of the top five list.Results: The panel included 40 GPs. The list includes: i/ antibiotics prescription for acute bronchitis, nasopharyngitis, otitis media with effusion, or uncomplicated influenza, ii/ systematic prostate specific antigen testing in men older than 50, iii/ prescription of cholinesterase inhibitors for mild cognitive impairment and for Alzheimer's disease and memantine for Alzheimer's disease, iv/ statins prescription in primary prevention of cardio-vascular risk in older patients, and v/ benzodiazepine or benzodiazepine-like agents prescription for generalised anxiety, insomnia, and for all indications in older patients.Conclusions: This study resulted in a French top five list in general practice using a panel of GPs. All the items selected have a negative risk-benefit balance and are frequently prescribed by French general practitioners. This list differs from other top five lists for general practice, reflecting the local medical culture

Lancement 2d année Défi Sciences et Société : Réalisation d’une photonique intégrée sur matériaux bio-polymères / bio-inspirés par technologies additives, dont imprimante 3D

International audienc

Lancement 2d année Défi Sciences et Société : Réalisation d’une photonique intégrée sur matériaux bio-polymères / bio-inspirés par technologies additives, dont imprimante 3D

International audienc