997 resultados para A84-08
Resumo:
Sediment porewater oxygen profiles were measured with micro and needle electrodes in sediment cores of 27 stations in the Skagerrak (northeastern North Sea). Oxygen penetration depth ranged from 3 to 20 mm depth. Fluxes estimated from the oxygen gradients varied from 3 to 18 mmol m**-2 d**-1. Oxygen penetration and flux depend on water depth, but possibly more on the hydrological conditions, related to the import of fresh organic matter by primary production in the water column. Oxygen fluxes were not related to the total organic carbon (TOC) content of the sediments. Stations in the eastern part of the Skagerrak showed high burial rates of TOC. At 6 stations porewater chemistry of Fe, Mn and NO3- was strongly associated with the oxygen distribution. The average relative contribution of terminal electron acceptors to carbon mineralisation was estimated at 85% for O2, 0.5% for Mn, 4.5% for [NO3]3-, 1% for Fe and 9% for [SO4]2-. At one station the occurrence of exceptionally high solid manganese oxyhydroxides was probably related to an active internal manganese cycle.
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Approaches to quantify the organic carbon accumulation on a global scale generally do not consider the small-scale variability of sedimentary and oceanographic boundary conditions along continental margins. In this study, we present a new approach to regionalize the total organic carbon (TOC) content in surface sediments (<5 cm sediment depth). It is based on a compilation of more than 5500 single measurements from various sources. Global TOC distribution was determined by the application of a combined qualitative and quantitative-geostatistical method. Overall, 33 benthic TOC-based provinces were defined and used to process the global distribution pattern of the TOC content in surface sediments in a 1°x1° grid resolution. Regional dependencies of data points within each single province are expressed by modeled semi-variograms. Measured and estimated TOC values show good correlation, emphasizing the reasonable applicability of the method. The accumulation of organic carbon in marine surface sediments is a key parameter in the control of mineralization processes and the material exchange between the sediment and the ocean water. Our approach will help to improve global budgets of nutrient and carbon cycles.
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Each year, The Australian Centre for Philanthropy and Nonprofit Studies (CPNS) at Queensland University of Technology (QUT) collects and analyses statistics on the amount and extent of tax-deductible donations made and claimed by Australians in their individual income tax returns to deductible gift recipients (DGRs). The information presented below is based on the amount and type of tax-deductible donations made and claimed by Australian individual taxpayers to DGRs for the period 1 July 2006 to 30 June 2007. This information has been extracted mainly from the Australian Taxation Office's (ATO) publication Taxation Statistics 2006-07. The 2006-07 report is the latest report that has been made publicly available. It represents information in tax returns for the 2006-07 year processed by the ATO as at 31 October 2008. This study uses information based on published ATO material and represents only the extent of tax-deductible donations made and claimed by Australian taxpayers to DGRs at Item D9 Gifts or Donations in their individual income tax returns for the 2006-07 income year. The data does not include corporate taxpayers. Expenses such as raffles, sponsorships, fundraising purchases (e.g., sweets, tea towels, special events) or volunteering are generally not deductible as „gifts‟. The Giving Australia Report used a more liberal definition of gift to arrive at an estimated total of giving at $11 billion for 2005 (excluding Tsunami giving of $300 million). The $11 billion total comprised $5.7 billion from adult Australians, $2 billion from charity gambling or special events and $3.3 billion from business sources.
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Technical highlights 2007–08, with detailed progress reports on the latest invasive plant and animal research undertaken by Biosecurity Queensland, a service unit of the Department of Primary Industries and Fisheries.
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The influence of 0.03 and 0.08 at. % Ag additions on the clustering of Zn atoms in an Al-4.4 at. % Zn alloy has been studied by resistometry. The effect of quenching and ageing temperatures shows that the ageing-ratio method of calculating the vacancy-solute atom binding energy is not applicable to these alloys. Zone-formation in Al-Zn is unaffected by Ag additions, but the zone-reversion process seems to be influenced. Apparent vacancy-formation energies in the binary and ternary alloys have been used to evaluate the v-Ag atom binding energy as 0.21 eV. It is proposed that, Ag and Zn being similar in size, the relative vacancy binding results from valency effects, and that in Al-Zn-Ag alloys clusters of Zn and Ag may form simultaneously, unaffected by the presence of each other. © 1970 Chapman and Hall Ltd.
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Contenido: Editorial – La relación de la justicia y el derecho / Justo López – Mos Italicus, Mos Gallicus y el humanismo racionalista : una contribución a la historia de la metodología jurídica / Francisco Carpintero – La lesión subjetiva, una consecuencia negativa de la socialización : la solución del problema a través de la reforma de 1968: algunos aspectos / Antonio E. Maínez – Escolios – Documentos – Notas bibliográficas
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Consultoria de Orçamento e Fiscalização Financeira - Núcleo de Assuntos Econômico-Fiscais.
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Comenta o discurso do Deputado Herbert Levy em relação às condições de funcionamento da administração pública em Brasília e em relação a críticas feitas ao Senador Pedro Ludovico. Declara ser impossível admitir o retorno da capital do país para o Rio de Janeiro.
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Lançamento do Bloco Parlamentar Mudancista, de caráter suprapartidário, tendo como escopo lutar pela interiorização da capital da República e impedir o adiamento da mudança da Capital Federal, fixada em lei para 21 de abril de 1960.
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Critica os serviços prestados pelas companhias aéreas, que agem como forças contrárias à consolidação de Brasília. Cita especialmente a deficiência do transporte aéreo entre a Capital Federal e Belo Horizonte.
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Analisa a última campanha eleitoral. Reafirma a posição do seu partido, o PSD, contra qualquer movimento que vise o retorno da capital da República para o Rio de Janeiro.
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Discorre favoravelmente sobre a questão da interiorização da capital. Considerações sobre aspectos geo-políticos da mudança da Capital Federal.
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Alerta para a incoerência dos dirigentes do PMDB em relação à representação política para o Distrito Federal e enfatiza que o povo necessita de um governador eleito.