922 resultados para Territorial concentration


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Paper submitted to the 44th European Congress of the European Regional Science Association, Porto, 25-29 August 2004.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Geografia - FCT

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The processes resulting from globalization are backdrop for the work. On the other hand the Regulation Theory is theoretical north that drives research directions. Considering these two basis, we studied the formation of economic groups as a consequence of the processes of concentration and centralization of capital, giving more emphasis on their national character. We see how they went through the restructuring process in the transition from Fordist accumulation regime to a flexible system of accumulation. We 'll discuss the brewery industry and how major industry groups are currently creating a sector overview, ranging from the productive process to the forms of competition among large companies. Specifically we will see the Petrópolis Group this framework and how the company relates to the territory, and what answers we have of this relationship in terms of local development in the territories where the group entered, and territorial changes which have occurred there

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La lógica del mercado y al cambio de modelo de desarrollo en América Latina, en el intento de poder competir a nivel mundial, ha agudizado las disparidades y el deterioro ambiental. La presión que ejercen las grandes empresas y ciertos grupos con poder, el enquistamiento de una estructura administrativa que puja por mantener esquemas tradicionales ya perimidos y la falta de planificación impiden atender uno de los problemas claves que plantea la economía en el territorio, el de la concentración y los desequilibrios territoriales. Surge entonces el Ordenamiento Territorial como alternativa válida para atenuar estos procesos y dar respuesta a la sociedad. El caso que se presenta pone en el tapete muchos de estos temas que hoy preocupan y puede servir como experiencia transferible y aplicable a otras realidades que buscan consolidar un desarrollo local sustentable. El ante-proyecto de Ley de Ordenamiento Territorial y Usos del Suelo para la provincia de Mendoza, República Argentina, es un instrumento elaborado en el año 2006 por el sector académico-científico que desde una visión interdisciplinaria incorpora fundamentos técnicos y aportes de los actores sociales involucrados. La metodología aplicada permite consensuar por la sociedad en su conjunto los principios que sustentan la Ley, determinar la aplicación de ciertos instrumentos para efectivizar acciones en el territorio y definir una forma innovadora de hacer política, gestionar y planificar el uso del suelo. La propuesta considera al Ordenamiento Territorial como una política de Estado que debe propiciar condiciones de gobernabilidad. Sus principios y normas priorizan la equidad y el bienestar general por encima de los intereses particulares así como también el respeto de los valores y costumbres de la sociedad. Surge de un proceso participativo y sus principios y fines responden a los problemas actuales. Incorpora una serie de instrumentos debidamente jerarquizados conforme a las competencias jurisdiccionales y existencia de distintas escalas geográficas, como también, instrumentos jurídicos y prácticas administrativas innovadoras que permiten la resolución de conflictos territoriales. Identifica además recursos financieros para implementarla y prioriza el fortalecimiento de los mecanismos de control para un funcionamiento más ágil y eficaz de la gestión pública. Sin embargo existen riesgos vinculados a la voluntad política y el poder económico que pueden impedir que esta utopía se transforme en realidad. Solo la participación social es la que puede lograr vencer los intereses en juego y conseguir la aprobación de la Ley. Si esto se consigue se habrá dado un paso muy importante a ser imitado, sin lugar a dudas, en otros lugares de Argentina y América Latina.

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The increased emphasis within Europe on the role of second-tier cities has implications for the ways in which these urban centres are considered within national spatial planning strategies. In centralised, monocentric states like Ireland, there has been a general ambivalence towards urban policy for cities outside the capital city, and historically this has prevented the development of a strong, diversified urban hierarchy undermining prospects for balanced regional development. This paper examines the extent to which a new found emphasis on Ireland’s second-tier cities which emerged in the ‘Gateways’ policy of the National Spatial Strategy (NSS, 2002) was matched by subsequent political and administrative commitment to facilitate the development of these urban centres. Following a discussion of the position of second-tier cities in an international context and a brief overview of recent demographic and economic trends, the paper assesses the relative performance of Ireland’s second-tier cities in influencing development trends, highlighting a comprehensive failure to deliver compact urban growth. In this context, the paper then discusses the implications of current development plans for the second-tier cities and proposals for Irish local government reform for securing compact urban development.

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Guarana seeds have the highest caffeine concentration among plants accumulating purine alkaloids, but in contrast with coffee and tea, practically nothing is known about caffeine metabolism in this Amazonian plant. In this study, the levels of purine alkaloids in tissues of five guarana cultivars were determined. Theobromine was the main alkaloid that accumulated in leaves, stems, inflorescences and pericarps of fruit, while caffeine accumulated in the seeds and reached levels from 3.3% to 5.8%. In all tissues analysed, the alkaloid concentration, whether theobromine or caffeine, was higher in young/immature tissues, then decreasing with plant development/maturation. Caffeine synthase activity was highest in seeds of immature fruit. A nucleotide sequence (PcCS) was assembled with sequences retrieved from the EST database REALGENE using sequences of caffeine synthase from coffee and tea, whose expression was also highest in seeds from immature fruit. The PcCS has 1083bp and the protein sequence has greater similarity and identity with the caffeine synthase from cocoa (BTS1) and tea (TCS1). A recombinant PcCS allowed functional characterization of the enzyme as a bifunctional CS, able to catalyse the methylation of 7-methylxanthine to theobromine (3,7-dimethylxanthine), and theobromine to caffeine (1,3,7-trimethylxanthine), respectively. Among several substrates tested, PcCS showed higher affinity for theobromine, differing from all other caffeine synthases described so far, which have higher affinity for paraxanthine. When compared to previous knowledge on the protein structure of coffee caffeine synthase, the unique substrate affinity of PcCS is probably explained by the amino acid residues found in the active site of the predicted protein.

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studies have shown that rate of propofol infusion may influence the predicted propofol concentration at the effect site (Es). The aim of this study was to evaluate the Es predicted by the Marsh pharmacokinetic model (ke0 0.26min(-1)) in loss of consciousness during fast or slow induction. the study included 28 patients randomly divided into two equal groups. In slow induction group (S), target-controlled infusion (TCI) of propofol with plasma, Marsh pharmacokinetic model (ke0 0.26min(-1)) with target concentration (Tc) at 2.0-μg.mL(-1) were administered. When the predicted propofol concentration at the effect site (Es) reached half of Es value, Es was increased to previous Es + 1μg.mL(-1), successively, until loss of consciousness. In rapid induction group (R), patients were induced with TCI of propofol with plasma (6.0μg.ml(-1)) at Es, and waited until loss of consciousness. in rapid induction group, Tc for loss of consciousness was significantly lower compared to slow induction group (1.67±0.76 and 2.50±0.56μg.mL(-1), respectively, p=0.004). the predicted propofol concentration at the effect site for loss of consciousness is different for rapid induction and slow induction, even with the same pharmacokinetic model of propofol and the same balance constant between plasma and effect site.

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Report of an early case of Shy-Drager syndrome in a 67 year-old woman patient. Autonomic failure was diagnosed by functional evaluation as well as laboratory tests. MR imaging disclosed a prominent putamina hypodensity in T2-weighted images at high field strength due to iron increased depositing in this basal ganglia. MR imaging evidences confirm Shy-Drager syndrome diagnosis, and contributes for differential diagnosis of idiopathic hypotension (pure autonomic failure) in special in SDS early cases.

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PURPOSE: To evaluate the effect of the use of 0.5% and 2% chlorhexidine digluconate on the immediate bond strength of a conventional adhesive system to dentin in primary teeth. METHODS: Twenty-one healthy primary molars were divided into three groups (n=7), being one control (A) and two experimental groups (B and C). After dentin exposure, in Group (A) the adhesive procedure was performed using 37% phosphoric acid gel (15 s); dentin was washed (15 s), air dried (30 s) and rehydrated with water. Groups B and C followed similar procedures but for re-hydration with 0.5% and 2% chlorhexidine, respectively, for 30 s. A resin composite block was built simulating a restoration, and the teeth were stored in distilled water at 37°C for 24 h before the microtensile bond strength test. The bond strength data were analyzed by analysis of variance. RESULTS: No statistically significant difference in bond strength was found among the tested groups (P>0.05) CONCLUSION: The 0.5% and 2% concentrations of chlorhexidine presented similar behavior and caused no adverse effects on the bond strength to dentin in primary teeth.

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In this work, the development and evaluation of a hyphenated flow injection-capillary electrophoresis system with on-line pre-concentration is described. Preliminary tests were performed to investigate the influence of flow rates over the analytical signals. Results revealed losses in terms of sensitivity of the FIA-CE system when compared to the conventional CE system. To overcome signal decrease and to make the system more efficient, a lower flow rate was set and an anionic resin column was added to the flow manifold in order to pre-concentrate the analyte. The pre-concentration FIA-CE system presented a sensitivity improvement of about 660% and there was only a small increase of 8% in total peak dispersion. These results have confirmed the great potential of the proposed system for many analytical tasks especially for low concentration samples.

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The objective of this study was to extract and concentrate calcium oxalate (CaOx) crystals from plant leaves that form the above mentioned crystals. The chemical and physical studies of CaOx from plant to be performed depend on an adequate amount of the crystals. The plant used in this study was croton (Codiaeum variegatum). The leaves were ground in a heavy duty blender and sieved through a 0.20 mm sieve. The suspension obtained was suspended in distilled water. The crystals were concentrated at the bottom of a test tube. The supernatant must be washed until it is free of plant pigments and other organic substances. Biogenic CaOx crystals have well-defined and sharp peaks, indicating very high crystallinity. Moreover, the CaOx crystals were not damaged during the extraction procedure, as can be seen on the scanning electron microscope images. The porposed method can be considered efficient to extract and concentrate biogenic calcium oxalate.