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Distribution and origin of polycyclic aromatic hydrocarbons in surface sediments from an urban river basin at the Metropolitan Region of Curitiba,Brazil

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Journal of Environmental Sciences 2011年第6期23卷 904-911页

作者： Natalicio Ferreira Leite patricio peralta-zamora Marco Tadeu Grassi Instituto de Tecnologia do Paran(TECPAR) 81350-010 CuritibaBrazil Departamento de Química Universidade Federal do Parana'(UFPR)C.P.1908181531-990 CuritibaBrazil

The concentrations of 16 polycyclic aromatic hydrocarbons（PAHs） were determined in surface sediment samples from nine sites located at the Iguau River Basin in the Metropolitan Region of Curitiba,Brazil to evaluate their distribution and *** total concentration of the PAHs was greater for sediments from highly urbanized areas,while the sediments from the Iraí Environmental Protection Area（Iraí EPA） showed significantly low *** sediments from the Iguau and Barigui rivers were classified as highly contaminated,while those from the Cercado and Curralinho rivers were classified as moderately *** predominance of PAHs containing two to four aromatic rings in most of the samples suggested the direct input of raw sewage into the water resources ***[g,h,i]perylene,dibenzo[a,h]anthracene and indeno[1,2,3-cd]pyrene were predominant in sediments from the areas under the greatest urban and industrial *** correlation between thermodynamic stability and the kinetics of evolution presented by the isomeric pairs indicated that combustion is the predominant source of PAHs in the sediments because the combustion of fossil fuels affected most of the points evaluated,followed by combustion of biomass and eventually combustion of oil product *** general,the results showed that areas under strong urban influence,as well as the Iraí EPA,receive contributions of PAHs from similar sources.

关键词： PAHs trace level analysis fiver sediment isomeric ratio Igua^u River Basin

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Visual Anosognosia (Anton-Babinski Syndrome): Report of Two Cases Associated with Ischemic Cerebrovascular Disease

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Journal of Behavioral and Brain Science 2012年第3期2卷 394-398页

作者： Juan JoseRomero Carvajal Augusto Alejandro Arias Cardenas German zamora Pazmino patricio Abad Herrera Resident of Internal Medicine Department Hospital MetropolitanoUniversidadInternacional del EcuadorQuitoEcuador Department of Neuroradiology Hospital MetropolitanoQuitoEcuador Department of Neurology Hospital MetropolitanoQuitoEcuador

Visual anosognosia or Anton-Babinski syndrome is a rare neurological condition related to cortical blindness. The patients deny their blindness and affirm adamantly that they are capable of seeing. The clinical presentation includes confabulations and sometimes confusional states. In this article we report two patients with anosognosia related to ischemic stroke in two different sets of etiology and pathogenesis. We describe the major clinical manifestations of this syndrome and review the current medical literature. Two patients were identified, a 96-year-old male with visual anosognosia secondary to a right posterior cerebral artery thrombosis, and a 56-year-old female with the same syndrome but related to central nervous system angiitis in relation with multiple sclerosis and Hashimoto’s thyroiditis. Visual anosognosia or Anton-Babinski syndrome is a rare neurological condition, however the ischemic vascular cerebral disease is a frequent etiology. We believe that this is the first report of this syndrome in relation to angiitis with a clear autoimmune pathogenesis.

关键词： Visual Anosognosia Cortical Blindness Anton-Babinski Syndrome Stroke MRI

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