993 resultados para Chromium(VI) determination


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Analisa esse tratado que põe fim às guerras da Restauração de Portugal, mandando devolver a cada uma das partes as conquistas que à outra tiverem feito. Nas colônias, a paz passaria a vigorar um ano após a sua publicação, dado o tempo necessário para que a notícia chegasse à América e à Ásia.

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The purpose of this study was to determine the actual direction of littoral transport along the north shore of Santa Rosa Island in the vicinity of Pensacola Beach, Florida. To accomplish this objective the sand tracer method was used for the study. Visual observations and instrument recordings of the environment factors were also made during the tracing operations. The investigation covered a time span from September 14, 1976 to March 12, 1977. (PDF contains 68 pages.)

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[EN]Conjugated linoleic acid (CLA) has many potential healthful properties, and beef is naturally enriched with CLA. Simple and rapid methods to measure total CLA were investigated to enable sorting of beef carcasses with potential enhanced economic value. Direct alcohol extraction combined with measuring absorbance was simple, accurate and perhaps the most viable method for rapid carcass sorting compared to methods using saponification or methylation followed by extraction.

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En este documento se recuerda la figura del Doctor Humberto Antonio Fabris (1924-1976), investigador y docente de la Facultad de Ciencias Naturales y Museo.

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Francisco Manuel de Melo nasceu em Lisboa, e m 23 de novembro de 1608. e morreu na sua quinta em Alcântara, em 13 de outubro de 1666. Estudou em colégio Jesuíta, especializando-se em Filosofia e Teologia. Aos dezessete anos, decidiu seguir carreira militar. Condenado por instigar homicídio, esteve preso por onze anos e, em 1655, foi degredado para o Brasil, para onde partiu na armada de Francisco de Brito Freire. Retornou a Portugal em 1658. De lá foi pua a Itália, onde permaneceu p r alguns anos e começou, em 1664, a fazer uma edição completa de suas obras as quais por motivo ignorado não deu continuidade. Transferiu-se para Lisboa onde veio a falecer. Historiador, poeta, orador e crítico moralista, Francisco Manuel foi um dos escritores mais eruditos e polidos. ‘Epanaphoras de varia historia portugueza...’ na sua primeira edição publicada em 1660 trazia dedicatória do autor ao Rei D. Afonso Vl, substituída, pelo editor Craesbeeck, na segunda edição, por dedicatória a D. João da Silva, Marquês de Gouvêa. A obra é composta de cinco epanaforas. Em três delas, Francisco Manuel relata acontecimentos que testemunhou: na Epanáfora Política conta o levante ocorrido em Evora em 1637; na Epanáfora Bélica narra a batalha naval da armada de D. Antonio ocorrida contra os holandeses no Canal da Mancha, em 1637; na Epanáfora Trágica descreve o naufrágio da frota de D. Manuel de Meneses na costa francesa. Outras duas Epanáforas - a Amorosa e a Triunfante - não fazem parte do gênero das memórias; referem-se, respectivamente, a uma lenda sobre o descobrimento da Ilha da Madeira e a restauração de Pernambuco, em 1654. Inocêncio afirma que a primeira edição é ‘infinitamente superior a esta em correção’, onde se podem verificar vários erros, muito embora ambas sejam igualmente raras e tenham o mesmo valor .

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[EN] On 17 February 2008 Kosovo approved its declaration of independence from Serbia. The declaration was raised as a unilateral secession, a category which to date is widely debated by the international community, but supported in that case by a respectable number of the United Nation member states. A great many legal issues have been raised by the International Court of Justice's Advisory Opinion on Kosovo. This opinion was eagerly awaited by legal scholars due to both its possible effects and the scope of its principles outside the context of decolonization in what it could constitute of new approach to the international scenario for the twenty-first century. The ICJ stated that the declaration of independence was in accordance with international law if it was not prohibited. The answer turned on whether or not international law prohibited the declaration of independence, without ever examining whether an entity seeking secession is entitled with a positive right to secede and if so, under which circumstances. The basic issue can be summarised as whether or not we are facing a new course in the interpretation of certain classical categories of international law: the principle of territorial integrity, statehood, sovereignty, recognition, the right to external self-determination, etc. In this study we shall analyse some of the aspects arising from the Advisory Opinion of the International Court of Justice on the Accordance with international law of the unilateral declaration of independence in respect of Kosovo focusing on the territorial issue. Firstly we shall analyse the scope of the principle of territorial integrity of States and how it operates ; secondly, we shall focus on the scope of that principle in relation to the interior of the State, and ask ourselves how international law operates in relation to declarations of independence. Lastly, we shall deal with the principle of respect for territorial integrity in the specific case of Serbia with respect to Kosovo, and then end with a series of general conclusions. This study aims, definitely, to contribute to the theoretical debate on the challenges to the traditional certainties of international law in this area.

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As Voyages... são estudos completos, abrangendo todos os aspectos das regiões percorridas; servem de subsídio ao estudo das condições de vida no Brasil no século passado. "Fonte primordial de informações sobre os prédios coloniais do Rio de Janeiro, Minas Gerais, São Paulo, Santa Catarina e Goiás. Poucas obras no gênero atingem o valor de Saint-Hilarire. São clássicas e indispensáveis para o estudo do sul do Brasil, antes da Independência" segundo Borba de Moraes

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The present paper aims to develop a robust spherical indentation-based method to extract material plastic properties. For this purpose, a new consideration of-piling-up effect is incorporated into the expanding cavity model; an extensive numerical study on the similarity Solution has also been performed. As a consequence, two semi-theoretical relations between the indentation response and material plastic properties are derived, with which plastic properties of materials can be identified from a single instrumented spherical indentation curve, the advantage being that this approach no longer needs estimations of contact radius with given elastic modulus. Moreover, the inconvenience in using multiple indenters with different tip angles can be avoided. Comprehensive sensitivity analyses show that the present algorithm is reliable. Also, by experimental verification performed oil three typical materials, good agreement of the material properties between those obtained from the reverse algorithm and experimental data is obtained.

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The use of growth layers in teeth as an indicator of age in odnotocetes and pinnipeds was suggested by Laws (1954) and since then the method has been used extensively in both marine and non-marine mammals. Dentinal growth layers are groups (growth layer groups) of repetitive alternating bands which in cross-section are similar to growth rings in trees. The most commonly used methods for counting growth layer groups (GLGs) are by undecalcified longitudinal thin sections (150 um) or decalcified and stained thin sections (10-30 um). In longitudinal sections viewed with light microscopy, GLGs appear as opaque and translucent cones nestled one inside another, with the oldest dentine Iying adjacent to the enamel, and the newest layer borderinq the pulp cavity.

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Teeth were taken from 120 bottlenose dolphins, Tursiops truncatus, which had stranded on the mid-Atlantic coast of the United States. The number of annual growth layer groups (GLGs) for each animal was used to construct a growth curve. The growth rate of coastal North Atlantic Ocean Tursiops is similar to other cetaceans in having a high initial rate of growth, with no differences in growth between females and males. In females, the first dentinal GLG is thickest and is followed by GLGs which become progressively narrower. In males, the second GLG is thicker than the first; GLGs beyond number two become progressively smaller but at a slower rate than in females. In males and females, the translucent layer makes up proportionally larger parts of the GLG as the animal ages, but in males the percent translucent layer remains constant at about 50% while in females it continues to increase up to about 70% of the GLG. These two factors, GLGs width and translucent layer width, indicate that the sex and age of the animal influence the deposition of GLGs. Incremental layers are also present, averaging 12 per GLG, and seem similar to incremental layers described in other marine mammals. A plot of the relationship of percent growth of the last GLG to time of death suggests that the deposition of GLGs is relatively constant, at least during the first half of the year, and that North Atlantic Ocean Tursiops give birth in the fall as well as in the spring. (PDF contains 31 pages.)

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We investigated within- and between-reader precision in estimating age for northern offshore spotted dolphins and possible effects on precision from the sex and age-class of specimens. Age was estimated from patterns of growth layer groups i n the dentine and cementum of the dolphins' teeth. Each specimen was aged at least three times by each of two persons. Two data samples were studied. The first comprised 800 of each sex from animals collected during 1973-78. The second included 45 females collected during 1981. There were significant, generally downward trends through time in the estimates from multiple readings of the 1973-78 data. These trends were slight, and age distributions from last readings and mean estimates per specimen appeared to be homogeneous. The largest factor affecting precision in the 1973-78 data set was between-reader variation. In light of the relatively high within-reader precision (trends considered), the consistent between-reader differences suggest a problem of accuracy rather than precision for this series. Within-reader coefficients of variation averaged approximately 7% and 11%. Pooling the data resulted i n an average coefficient of variation near 16%. Within- and between-reader precision were higher for the 1981 sample, and the data homogeneous over both factors. CVs averaged near 5% and 6% for the two readers. These results point to further refinements in reading the 1981 series. Properties of the 1981 sample may be partly responsible for greater precision: by chance there were proportionately fewer older dolphins included, and preparation and selection criteria were probably more stringent. (PDF contains 35 pages.)

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Trata-se de pesquisa solicitada pelo Deputado Geraldo Resende sobre os valores contidos no PLOA/2015, referentes à Área Temática VI – Fazenda, Desenvolvimento e Turismo, bem como um comparativo com os últimos exercícios.