Degradation of organic compounds and production of activated species in Dielectric Barrier Discharges and Glidarc reactors

Major sterilization mechanisms are related to atoms and radicals, charged parti-cles, excited molecules, ozone, and UV radiation. The ROS (Reactive Oxygen Species) are well known as evildoers. These species are easily created in ambient air and water and they live long enough to reach the cell and attack the organic matter. Test molecules conversion in dry and wet air is studied using Dielectric Barrier Discharge (DBD) and Gliding Arc Reactors (GAR). The effects of tem-perature and energy deposition into the media on the active species production and then on the organic compounds degradation are presented for two non thermal plasma reactors: DBD and GAR. Main production species investigated are OH, O3, NOx, CO and CxHyOz by-products. It is shown from experiment analysis that the reactive species production is quite different from one reactor to another. GAR and pulsed DBD are two chemical processing ways in which the temperature of heavy species in ionized gas is determinant. By reviewing the species production obtained from both reactors, a discussion is open about plasma decontamination.Comment: NATO-AdvancedStudy Institute on Plasma Assisted Decontamination of biological and Chemical Agents, Cesme-Izmir : Turquie (2007

Removal of Pollutants by Atmospheric Non Thermal Plasmas

Results on the application of non thermal plasmas in two environmentally important fields: oxidative removal of VOC and NOx in excess of oxygen were presented. The synergetic application of a plasma-catalytic treatment of NOx in excess of oxygen is also described.Comment: 6 pages; Published in Catalysis for Environment: Depollution, Renewable Energy and Clean Fuels, Zakopane : Pologne (2008

Update on vitamin D and evaluation of vitamin D status.

Knowledge about vitamin D has greatly improved during the last few years. Vitamin D cannot any more be considered as exclusively necessary to prevent ricket/osteomalacia. Its role in the prevention of some osteoporotic fractures in the elderly (in association with calcium nutrition) is now well demonstrated and many epidemiologic and laboratory data argue for a role in the prevention of several diseases or anomalies (cancer, auto-immune diseases, cardiovascular events, sarcopenia...). A few intervention studies confirming some of these effects also exist. Vitamin D status can easily be assessed by measuring serum 25 hydroxy vitamin D (25OHD) level. However, many experts have claimed that the population-based reference values for 25OHD are too low and that the cut-off value below which vitamin D insufficiency can be present is somewhere between 20 and 40ng/mL with a clear tendency to target values above 30ng/mL (75nmol/L). The main consequences are that vitamin D insufficiency is highly frequent whereas the currently recommended supplementation doses are not sufficient

La santé psychologique et la conciliation travail-famille des infirmières en soins ambulatoires à l’ère de la COVID-19 : résultats d’une enquête

Introduction: The COVID-19 pandemic impacted nurses’ psychological health and work-family balance, including in ambulatory care settings. The results presented in this article are part of a study aiming to describe and contextualize the psychological health and changes in nurses’ follow-up practices in Quebec (Canada) during the COVID-19 pandemic. Objective: Explore and describe factors that influenced ambulatory care nurses’ psychological health and work-family balance during the first wave of the COVID-19 pandemic. Methods: Exploratory mixed data cross-sectional study using the SurveyMonkey platform. We collected data from July 2020 to September 2020. The target population comprised all practicing nurses in Quebec whose clinical activities included the follow-up of ambulatory patients, 200 of whom completed the survey.  Results: Multiple linear regression models indicated that anxiety (GAD-7 scores) and depressive symptoms (PHQ-9 scores) were associated with younger age, living alone, worries about transmitting COVID-19, and feeling that one’s work was not coherent with one’s values. Work-family balance was considered more difficult than before the pandemic by 54.5 % of participants. Factors perceived as influencing work-family balance were either related to work conditions (e.g., schedule and time at work, access to work from home, redeployment to another work setting), to family-related responsibilities/tasks or were specific to the pandemic. Discussion and conclusion: Apart from age, the feeling that one’s work was not coherent with their values was the only variable correlated with both GAD-7 and PHQ-9 in multivariate models. Further research should investigate the relationships between sense of coherence, psychological health, and work conditions like schedule flexibility and access to work from home.Introduction : La pandémie a eu des répercussions sur la santé psychologique et la conciliation travail-famille des infirmières, y compris dans les milieux de soins ambulatoires. Les résultats présentés dans cet article font partie d’une étude visant à décrire et contextualiser la santé psychologique et l’évolution des pratiques de suivi infirmier au Québec (Canada) lors de la pandémie de COVID-19. Objectif : Explorer et décrire les facteurs qui ont influencé la santé psychologique et la conciliation travail-famille des infirmières en soins ambulatoires pendant la première vague de la pandémie de COVID-19. Méthodes : Enquête exploratoire avec données mixtes par le biais de la plateforme SurveyMonkey. Les données ont été collectées de juillet 2020 à septembre 2020. La population cible était toutes les infirmières du Québec dont les activités cliniques incluaient le suivi de patients ambulatoires ; 200 infirmières ont participé. Résultats : Les modèles de régression ont indiqué que les symptômes anxieux (scores au GAD-7) et dépressifs (scores au PHQ-9) étaient associés à un plus jeune âge, au fait de vivre seul, aux inquiétudes concernant la transmission de la COVID-19 et au sentiment que son travail n’était pas cohérent avec ses valeurs. La conciliation travail-famille était jugée plus difficile qu’avant la pandémie par 54,5 % des participants. Les facteurs perçus comme l’influençant étaient soit liés aux conditions de travail (p. ex., horaire et temps de travail, télétravail, délestage), aux tâches familiales, ou étaient spécifiques à la pandémie. Discussion et conclusion : Outre l’âge, le sentiment que son travail n’était pas cohérent avec ses valeurs était la seule variable corrélée à la fois avec le GAD-7 et le PHQ-9. Les futures recherches devraient s’intéresser à la relation entre le sentiment de cohérence, la santé psychologique et les conditions de travail favorables à la conciliation travail-famille

Stratégies et comportements des agriculteurs les plus pauvres vis-à-vis de l'intensification et de la préservation des ressources naturelles dans les pays de l'Afrique soudano-sahélienne

Cette étude trouve son origine et sa justification dans le souci de plus en plus explicite de relier les questions de développement et d'environnement. Ce document est divisé en quatre parties : - La première s'attache à circonscrire la notion de pauvreté et à poser le problème de ses relations avec les comportements et stratégies des agriculteurs de l'Afrique soudano-sahélienne. Elle précise ensuite quelques notions et hypothèses relatives à l'exploitation du milieu et à ses rapports avec la pauvreté. - La deuxième partie est consacrée à un rappel des principales dynamiques qui permettent de restituer dans leur contexte spatial et temporel les stratégies et comportements des agriculteurs de cette région : mutations récentes de l'environnement agro-climatique, croissance de la population et migrations, changements économiques et institutionnels. - La troisième partie traite du thème de la pauvreté, des comportements des agriculteurs vis-à-vis de l'exploitation du milieu et de leurs relations dans sept situations agraires caractéristiques de l'Afrique soudano-sahélienne : pastoralisme nord-sahélien, agropastoralisme sahélien, systèmes céréaliers des régions sahélo-soudaniennes, zones arachidières, zones cotonnières, agricultures pionnières, grands périmètres irrigués sahéliens. - La quatrième partie rassemble les principales conclusions des études précédentes et débouchent sur des propositions destinées à la recherche ainsi qu'au développemen

The Psychological Health and Work-Family Balance of Ambulatory Care Nurses in the COVID-19 era: a Cross-Sectional Survey

Introduction: The COVID-19 pandemic impacted nurses’ psychological health and work-family balance, including in ambulatory care settings. The results presented in this article are part of a study aiming to describe and contextualize the psychological health and changes in nurses’ follow-up practices in Quebec (Canada) during the COVID-19 pandemic. Objective: Explore and describe factors that influenced ambulatory care nurses’ psychological health and work-family balance during the first wave of the COVID-19 pandemic. Methods: Exploratory mixed data cross-sectional study using the SurveyMonkey platform. We collected data from July 2020 to September 2020. The target population comprised all practicing nurses in Quebec whose clinical activities included the follow-up of ambulatory patients, 200 of whom completed the survey.  Results: Multiple linear regression models indicated that anxiety (GAD-7 scores) and depressive symptoms (PHQ-9 scores) were associated with younger age, living alone, worries about transmitting COVID-19, and feeling that one’s work was not coherent with one’s values. Work-family balance was considered more difficult than before the pandemic by 54.5 % of participants. Factors perceived as influencing work-family balance were either related to work conditions (e.g., schedule and time at work, access to work from home, redeployment to another work setting), to family-related responsibilities/tasks or were specific to the pandemic. Discussion and conclusion: Apart from age, the feeling that one’s work was not coherent with their values was the only variable correlated with both GAD-7 and PHQ-9 in multivariate models. Further research should investigate the relationships between sense of coherence, psychological health, and work conditions like schedule flexibility and access to work from home

Evidence for widespread creep on the flanks of the Sea of Marmara transform basin from marine geophysical data

"Wave" fields have long been recognized in marine sediments on the flanks of basins and oceans in both tectonically active and inactive environments. The origin of "waves" (hereafter called undulations) is controversial; competing models ascribe them to depositional processes, gravity-driven downslope creep or collapse, and/or tectonic shortening. Here we analyze pervasive undulation fields identified in swath bathymetry and new high-resolution multichannel seismic (MCS) reflection data from the Sea of Marmara, Turkey. Although they exhibit some of the classical features of sediment waves, the following distinctive characteristics exclude a purely depositional origin: (1) parallelism between the crests of the undulations and bathymetric contours over a wide range of orientations, (2) steep flanks of the undulations (up to ∼40°), and (3) increases in undulations amplitude with depth. We argue that the undulations are folds formed by gravity-driven downslope creep that have been augmented by depositional processes. These creep folds develop over long time periods (≥0.5 m.y.) and stand in contrast to geologically instantaneous collapse. Stratigraphic growth on the upslope limbs indicates that deposition contributes to the formation and upslope migration of the folds. The temporal and spatial evolution of the creep folds is clearly related to rapid tilting in this tectonically active transform basin