286 research outputs found

    La Sante des Populations des Espaces Frontaliers au Sud-Est du Benin: Quels Defis Sanitaires dans un Espace Cosmopolite?

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    La complexité des milieux frontaliers nécessite un système spécifique de soins de santé aux populationsrésidentes. L’analyse desressources en santé face au caractère cosmopolite des espaces frontaliers a été faite à partir des éléments du rapport final de la cartographie des interventions et intervenants en santé maternelle néo-natale et infanto-juvénile, les données du Système National d’Information et de Gestion Sanitaires actualisées au niveau des zones sanitaires concernées. Les résultats obtenus montrent une grande difficulté de l’offre de santé dans les espaces frontaliers au sud -est du Bénin. L’insuffisance en ressources humaines est importante de façon générale. La couverture des deux zones sanitaires en sages-femmes et infirmiers est satisfaisante. Cependant, leur répartition dans les centres de santé ne tient pas compte des particularités des espaces frontaliers. Il est noté un gap en matériel roulant pour le déplacement en urgence (4 ambulances), pour la supervision et le ravitaillement (12 véhicules) ainsi que pour les stratégies avancées (31 motos). L’intervention au niveau famille et communauté requiert encore beaucoup d’attention au regard du nombre important de relais communautaires qui reste à former et à pourvoir en kits de relais ; les kits SMNI sont quasiment inexistants dans presque toutes les formations sanitaires. Au regard de ces constats peu reluisants, il est nécessaire d’adapter l’offre de soins et l’organisation locale du système de santé pour tenir compte de l’ensemble des acteurs présents localement et des besoins des populations transfrontalières.The complexity of the frontier mediums requires a specific system of health care to the resident populations. The analysis of the health resources face to the cosmopolitan character of frontier spaces was made starting from the elements of the final report of the cartography of the interventions and speakers in neo-nativity and youthful maternal health, the data of the National System of Medical Information and Management brought up to date on the level of the medical concerned zones. The obtained results show a great difficulty of offer a health care in frontier spaces in the south-east of Benin. The insufficiency in human resources is generally significant. The cover of the two medical zones as midwives and male nurses is satisfactory. However, their distribution in health centers doesn’t take into account the frontier spaces characteristics. It is noted a gap in transport material for transportation of urgency case (4 ambulances), for the supervision and the supply (12 vehicles) like for the advanced strategies (31 motor bikes). The intervention on the family and community level still requires much attention in comparison with the significant number of Community relays which remain to be formed and to provide in kits with stage; kits SMNI are almost nonexistent in almost all the medical formations. Taking into consideration these report little glittering, it is necessary to adapt the offer of care and the local organization of the system of health to locally take into account the whole present actors and the transborder populations needs

    Absorption properties of Mediterranean aerosols obtained from multi-year ground-based remote sensing observations.

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    International audienceAerosol absorption properties are of high importance to assess aerosol impact on regional climate. This study presents an analysis of aerosol absorption products obtained over the Mediterranean basin or land stations in the region from multi-year ground-based AERONET observations with a focus on the Absorbing Aerosol Optical Depth (AAOD), Single Scattering Albedo (SSA) and their spectral dependence. The AAOD and Absorption Angström Exponent (AAE) dataset is composed of daily averaged AERONET level 2 data from a total of 22 Mediterranean stations having long time series, mainly under the influence of urban-industrial aerosols and/or soil dust. This dataset covers the 17-yr period 1996-2012 with most data being from 2003-2011 (~89% of level-2 AAOD data). Since AERONET level-2 absorption products require a high aerosol load (AOD at 440 nm > 0.4), which is most often related to the presence of desert dust, we also consider level-1.5 SSA data, despite their higher uncertainty, and filter out data with an Angström exponent < 1.0 in order to study absorption by carbonaceous aerosols. The SSA dataset includes AERONET level-2 products. Sun-photometer observations show that values of AAOD at 440 nm vary between 0.024 ± 0.01 (resp. 0.040 ± 0.01) and 0.050 ± 0.01 (0.055 ± 0.01) for urban (dusty) sites. Analysis shows that the Mediterranean urban-industrial aerosols appear "moderately" absorbing with values of SSA close to ~0.94-0.95 ± 0.04 (at 440 nm) in most cases except over the large cities of Rome and Athens, where aerosol appears more absorbing (SSA ~0.89-0.90 ± 0.04). The aerosol Absorption Angström Exponent (AAE, estimated using 440 and 870 nm) is found to be larger than 1 for most sites over the Mediterranean, a manifestation of mineral dust (iron) and/or brown carbon producing the observed absorption. AERONET level-2 sun-photometer data indicate a possible East-West gradient, with higher values over the eastern basin (AAEEast = 1.39/AAEWest = 1.33). The North-South AAE gradient is more pronounced, especially over the western basin. Our additional analysis of AERONET level-1.5 data also shows that organic absorbing aerosols significantly affect some Mediterranean sites. These results indicate that current climate models treating organics as nonabsorbing over the Mediterranean certainly underestimate the warming effect due to carbonaceous aerosols

    Problématique D’Evacuation Des Déchets Ménagers Dans La Cite De Bumba: « Cas Du Quartier Nzongo : Du 1er Janvier Au 30 Avril 2019 »

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    face aux impacts négatifs des déchets ménagers sur la qualité de l’environnement et sur la santé publique ; la gestion durable des déchets ménagers est devenue un sujet d’actualité et nombreuses études y menées mettent en évidence divers risques environnementaux et sanitaires pour les populations le quartier Nzongo, notre milieu d’étude dans la cité de Bumba abandonne ses déchets ménagers sur des terrains vagues et dans des trous se trouvant dans les habitations. L’insalubrité constatée dans ce quartier avec des conséquences négatives sur la santé de la population a attiré notre attention afin de traiter de la problématique d’évacuation des déchets ménagers dans la cité de Bumba ; cas du quartier Nzongo

    Les Albinos Face Au Développement Economique Du Territoire De Bumba « Cas De La Cité De Bumba »

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    l’albinisme est une affection autosomique récessive due à l’absence de mélanine dans  la peau, les  cheveux et les jeux. Les gens qui souffrent   de cette affection sont des albinos, souvent victimes des sacrifices humains d’assassinat voire d’enlèvement pour des fins magiques.  Etant marginalisés, leurs capacités restent inexploitées dans le menu du développement leur identification intégration  et leur promotion éducative seraient  des pistes de sortie du comportement  discriminatoire  leur affiché  afin d’atteindre  les  objectifs  du  millénaire  pour le développement  qui stipule « amélioration  de la santé  sous toutes ces formes  et  réduire par  conséquent ; l’extrême pauvreté »

    The Sloan Lens ACS Survey. VII. Elliptical Galaxy Scaling Laws from Direct Observational Mass Measurements

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    We use a sample of 53 massive early-type strong gravitational lens galaxies with well-measured redshifts (ranging from z=0.06 to 0.36) and stellar velocity dispersions (between 175 and 400 km/s) from the Sloan Lens ACS (SLACS) Survey to derive numerous empirical scaling relations. The ratio between central stellar velocity dispersion and isothermal lens-model velocity dispersion is nearly unity within errors. The SLACS lenses define a fundamental plane (FP) that is consistent with the FP of the general population of early-type galaxies. We measure the relationship between strong-lensing mass M_lens within one-half effective radius (R_e/2) and the dimensional mass variable M_dim = G^-1 sigma_e2^2 R_e/2 to be log_10 [M_lens/10^11 M_Sun] = (1.03 +/- 0.04) log_10 [M_dim/10^11 M_Sun] + (0.54 +/- 0.02) (where sigma_e2 is the projected stellar velocity dispersion within R_e/2). The near-unity slope indicates that the mass-dynamical structure of massive elliptical galaxies is independent of mass, and that the "tilt" of the SLACS FP is due entirely to variation in total (luminous plus dark) mass-to-light ratio with mass. Our results imply that dynamical masses serve as a good proxies for true masses in massive elliptical galaxies. Regarding the SLACS lenses as a homologous population, we find that the average enclosed 2D mass profile goes as log_10 [M(<R)/M_dim] = (1.10 +/- 0.09) log_10 [R/R_e] + (0.85 +/- 0.03), consistent with an isothermal (flat rotation curve) model when de-projected into 3D. This measurement is inconsistent with the slope of the average projected aperture luminosity profile at a confidence level greater than 99.9%, implying a minimum dark-matter fraction of f_DM = 0.38 +/- 0.07 within one effective radius. (abridged)Comment: 13 pages emulateapj; accepted for publication in the Ap

    Relations between Au / Sn-W mineralizations and late hercynian granite: Preliminary results from the Schistose Domain of Galicia-Trás-os-Montes Zone, Spain

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    International audienceAu and W-Sn mineralization of the Schistose Domain of Galicia-Trás-os-Montes are spatially related to late hercynian granites. The Bruès (Au) and the Mina Soriana W-(Sn) deposits are studied. Both show some similarities and are assumed to form in the same tectonic and metamorphic context, on top of the granites. The role of the granite as a source for mineralizing fluids and rheological control for vein emplacement is re-adressed and discussed

    Self-Similarity in General Relativity \endtitle

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    The different kinds of self-similarity in general relativity are discussed, with special emphasis on similarity of the ``first'' kind, corresponding to spacetimes admitting a homothetic vector. We then survey the various classes of self-similar solutions to Einstein's field equations and the different mathematical approaches used in studying them. We focus mainly on spatially homogenous and spherically symmetric self-similar solutions, emphasizing their possible roles as asymptotic states for more general models. Perfect fluid spherically symmetric similarity solutions have recently been completely classified, and we discuss various astrophysical and cosmological applications of such solutions. Finally we consider more general types of self-similar models.Comment: TeX document, 53 page
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