Interprétation des radiographies en traumatologie ambulatoire (étude des discordances entre un service d'accueil urgence et un service de radiologie)

POITIERS-BU Médecine pharmacie (861942103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Kaolin reinforced rubbers : physical dependance between cristallinity and mechanical properties

International audienceA long time ago, the properties of rubber-kaolinite composite materials have been described as a function of the amount of mica-like components and order-disorder properties of the kaolinite. If the mica negative contribution could be simply identified as due to the easy 001 cleavage of coarser illites, the contribution of crystalline order of kaolinite was more difficult to identify. The Mössbauer spectroscopy of disordered kaolinites shows that the real kaolinite contains sites with FeII-FeII-lacuna octahedral occupation, then developing materials with necessary cation compensation sites. According to the shape analysis developed from low temperature nitrogen adsorption, and calculations of the average surface of an exchangeable site on the lateral surface of kaolinite, it is possible to evaluate that the FeII-FeII-lacuna sites are in continuous sheets, leading to some kind of exchangeable material looking like swelling clays. Paying account of the solvation of the compensating ions, as shown by the water adsorption on pure smectite, it can be evaluated that such layers, mainly the Ca++ compensated forms, vehicles water that slows down the vulcanization process, leading to non reactive alcohol groups on diene latex molecules, and then perturbing the reticulation process

Dementia and legal determination of capacity

ABSTRACT One of the consequences of dementia is the possibility of a guardianship proceeding that will deprive patients of legal capacity in taking decisions and managing their own assets. Objective To assess the legal capacity and guardianship proceedings in patients diagnosed with dementia. Methods Ninety-seven patients diagnosed with dementia and seen at a tertiary hospital were evaluated. Results Of these 97 patients, 60 (62%) were female. The mean age of the patients was 77.9 years; average schooling was 5.5 years. The main diagnosis was Alzheimer’s disease (73%): 16 patients were at a mild stage, eight at a moderate stage and 73 at an advanced stage of dementia. Only 28 patients had been legally declared incapable. Conclusion The large numbers of patients at an advanced stage of dementia, and the relatively few patients legally declared incapable show that legal issues in dementia are problematic

Le devenir des mâchefers d'incinération d'ordures ménagères: Partie 2 : traitement des mâchefers. Effet de la maturation, du tamisage, du déferraillage et du lavage à l’eau

According to the newsletter of 9 May 1994, municipal solid waste incinerator bottom ashes can be valorized as fill material if their polluting potential is low (V-class). In the opposite case, they have to be treated in a maturation center (M-class), or to be eliminated in a landfill center (S-class). The present study has allowed to show the beneficial effect of three treatments (maturation, sifting and water-washing) in the improvement of the environmental quality of bottom ashes. However, the separation of iron has no effect if it is carried out upstream the maturation, but this treatment has to be prescribed downstream of the maturation to allow an effective valorisation (this is a condition often demanded of a geotechnical viewpoint). ln general, if the maturation do not permit to obtain directly a V-class bottom ashes, it can be coupled to a 4 or 6 mm-sifting to convert bottom ashes of M or S-class to a V-class.Selon la circulaire du 9 mai 1994, les mâchefers peuvent être valorisés comme remblais si leur potentiel polluant est faible (mâchefers V), Dans le cas contraire, ils doivent être, soit traités dans un centre de maturation pour les rendre valorisables (mâchefers M), soit éliminés dans un centre de stockage (mâchefers S). La présente étude a permis de montrer l'effet bénéfique de la maturation, du tamisage et du lavage à l'eau dans l'amélioration de la qualité environnementale des mâchefers. En revanche, le déferraillage n'a pratiquement aucun effet lorsqu'il est réalisé en amont de la maturation, mais il doit être réalisé en aval pour permettre une valorisation effective (condition souvent exigée d'un point de vue géotechnique). De manière générale, lorsque la maturation ne permet pas d'obtenir directement des mâchefers de classe V, elle peut être couplée à un tamisage à 4 ou 6 mm pour avoir toutes les chances de convertir des mâchefers de classe M ou S en catégorie V