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Viticultural Performance of Merlot and Cabernet Sauvignon （Vitis vinifera L.） Cultivated in High Altitude Regions of Southern Brazil

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Journal of Life Sciences 2015年第9期9卷 399-410页

作者： Jaqueline Nogueira Muniz Suzeli Simon Alberto Fontanella Brighenti Luciane Isabel Malinovski Carolina Pretto Panceri Gabriella Vanderlinde Juliana Welter debora dal zotto Aparecido Lima da Silva Santa Catarina Federal University Plant Genetic Resources Post Graduate Program Rod. Admar Gonzaga 1346 ItacorubiFlorian6polis 88034-001 SC Brazil Santa Catarina State Agricultural Research and Rural Extension Agency EPAGRI Rua Josd Arafijo Lima 102 CEP S~oJoaquim 88600-000 SC Brazil Santa Catarina Federal University Food Science Post Graduate Program Rod. Admar Gonzaga 1346 CEP FIorian6polis88034-001 SC Brazil Santa Catarina Federal University Agronomy College Rod. Admar Gonzaga 1346 Itaeorubi Florian6polis 88034-001 SC Brazil

Different studies show that the altitude regions of the State of Santa Catarina have great potential for the production of grapevine varieties. The aim of this study was to characterize the phenological development, determine the thermal requirements in degree-days （DD）, the index heliothermic （IH） and climatic variables during the vegetative and productive development of varieties Merlot and Cabernet Sauvignon grown in Campo Belo do Sul （27°40′04″ S, 50°44′48″ W, altitude 950 m a.s.l.） and Sao Joaquim （28°15′13″ S, 49°57′02″ W, altitude 1,400 m a.s.l.） during 2012/2013 cycle. Phenological stages evaluated were bud break, full bloom, veraison and maturity. Higher temperatures, global radiation, PAR and lower volumes of rainfall were the main climatic parameters that differentiated Campo Belo do Sul from Sao Joaquim. Due to occurrence of higher temperatures, Campo Belo do Sul presented thermal summation around 40% higher than Sao Joaquim. The low temperatures of Sao Joaquim extended the period of grape ripening and were responsible for the highest levels of titratable acidity and the higher concentrations of anthocyanins and total polyphenols in both varieties. The results show that in the altitude ranges studied （900 and 1400 m）, climatic behavior and viticultural performance of Cabernet Sauvignon and Merlot were suitable for producing quality wines.

关键词： Climate phenology technological maturation total polyphenols.

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GLOBAL EXISTENCE OF SOLUTIONS FOR A MULTI-PHASE FLOW: A BUBBLE IN A LIQUID TUBE AND RELATED CASES

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Acta Mathematica Scientia 2015年第4期35卷 832-854页

作者： debora AMADORI Paolo BAITI Andrea CORLI Edda dal SANTO Department of Engineering and Computer Science and Mathematics University of L'Aquila Department of Mathematics and Computer Science University of Udine Department of Mathematics and Computer Science University of Ferrara

In this paper we study the problem of the global existence （in time） of weak entropic solutions to a system of three hyperbolic conservation laws, in one space dimension, for large initial data. The system models the dynamics of phase transitions in an isothermal fluid; in Lagrangian coordinates, the phase interfaces are represented as stationary contact discontinuities. We focus on the persistence of solutions consisting in three bulk phases separated by two interfaces. Under some stability conditions on the phase configuration and by a suitable front tracking algorithm we show that, if the BV-norm of the initial data is less than an explicit （large） threshold, then the Cauchy problem has global solutions.

关键词： hyperbolic systems of conservation laws phase transitions wave-front trackingalgorithm

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