Effects of different winemaking processes on enological characteristics of tropical wines in Brazil.

Tropical wines started being produced 30 years ago. The wine production in the São Francisco Valley-SFV, Northeast of Brazil, located in a tropical semi-arid climate, needs technologies to allow vines to be produced throughout the year. In this region, grapes are harvested according to the enologist demand and wines have been elaborated differently in many seasons, showing typical characteristics according to the month of the year. A specific characteristic of the grape bunches produced in the SFV have pointed to different visual presentation, as compared to bunches produced in other regions. Bunches stems have been harvested green, even in different seasons, as compared to other regions, where bunches have lignification and brown to

Analysis of the physicochemical characteristics of juices produced from grapes harvested at different maturity stages.

Currently the cultivation of grapes for grape juice production has gained ground in new regions of Brazil, as the example in the São Francisco Valley (SFV) located in the Northeastern of Brazil between the parallels 8:09° Southern Hemisphere and 40W longitude in a tropical semi-arid climate. Companies have invested in the production of grape juice on a commercial scale in this region is estimated in 2015 a volume of 1.5 million liters of whole juice. However, viticulture practiced in VSF (Tropical Viticulture) is different from other traditional regions of the world, for the same vine produces two crops per year, with this, the wineries are planning the time when they intended to harvest the grapes and perform production pruning vines at different times, by adopting a scaling system to be distributed crops throughout the month, and several months of the year. The aim of this study was to evaluate how physical and chemical characteristics of the elaborate hp grape juices with. cv. Isabel precocious and BRS Violeta, harvested at different maturity stages in the São Francisco Valley

Utilização do processo de nanofiltração para concentração de compostos de soja.

A utilização da soja para a produção de alimentos aumentou nas últimas décadas devido ao forte apelo das pesquisas na área da saúde, destacando seus efeitos benéficos, quando consumidos regularmente. Com isso, os derivados da soja passaram a ganhar um destaque comercial, principalmente devido às suas características funcionais, contribuindo para a geração de novos produtos com essas mesmas propriedades. Dessa forma, esse trabalho teve como objetivo utilizar o processo de nanofiltração (NF) até o Fator de Redução Volumétrico (FRV) igual a 3, para concentrar os compostos funcionais de um extrato etanólico de soja (10% etanol) e verificar a eficiência do processo por meio da quantificação de isoflavonas presentes nos concentrados. Os resultados obtidos mostraram que o fluxo permeado médio obtido na nanofiltração foi de 9,2 L.m-2.h-1. Com relação ao processo de concentração, observou-se um fator de concentração de 3 vezes para os conjugados glicosil, de 2,4 vezes para os conjugados malonil e 1,3 vezes para as agliconas, significando que parte desses últimos compostos permeiam a membrana. Com relação às isoflavonas totais verificou-se um aumento de 60% no concentrado obtido a partir da nanofiltração. Conclui-se que a nanofiltração pode ser utilizada para a concentração de compostos bioativos presentes na soja com possibilidades utilizá-los nas indústrias alimentícia e farmacêutica

Enological characteristics of ?Chardonnay? grapes produced in tropical climate in the Northeastern of Brazil.

The climate has very strong influence on the vine performance, being the main factor to determine the potentiality of wine from a new region. There is also interactions among wine quality and other factors, such as soil, variety and the management adopted in the vineyard. In tropical climates, as in the São Francisco Valley (VSF), located at 350 m of elevation and 9º S of latitude, vines grown continuously, and with the use of specific technologies, it is possible to have two harvests per year in the same vineyar

Adaptation and validation of the Patient Expectations and Satisfaction with Prenatal Care instrument among Brazilian pregnant women

Objective: to adapt and validate the Patient Expectations and Satisfaction with Prenatal Care instrument for use in Brazil. It contains 41 items divided into two dimensions: expectations and satisfaction. The adapted version was submitted to analysis for stability, convergent construct validity, and internal consistency (Cronbach’s alpha) for distinct groups and dimensions. Method: 119 pregnant women receiving prenatal care were interviewed and 26 of these women answered the instrument twice (retest). Internal consistency was appropriate (Cronbach’s alpha ≥ 0.70); test-retest presented strong correlation (r=0.82; p<0.001) for the domain expectations and moderate correlation (r=0.66; p<0.001) for the satisfaction domain. The analysis confirmed that the instrument’s adapted version is valid in the studied group. Results: there is strong evidence for the validity and reliability of the instrument’s adaptation. Conclusion: the instrument needs to be tested in groups of pregnant women with different social characteristics.CAPESCAPE

Modelling of Short-Term Interactions Between Concrete Support and the Excavated Damage Zone Around Galleries Drilled in Callovo–Oxfordian Claystone

peer reviewedProduction of energy from nuclear power plants generates high-level radioactive nuclear waste, harmful during dozens of thousand years. Deep geological disposal of nuclear waste represents the most reliable solutions for its safe isolation. Confinement of radioactive wastes relies on the multi-barrier concept in which isolation is provided by a series of engineered (canister, backfill) and natural (host rock) barriers. Few underground research laboratories have been built all over the world to test and validate storage solutions. The underground drilling process of disposal drifts may generate cracks, fractures/strain localisation in shear bands within the rock surrounding the gallery especially in argillaceous rocks. These degradations affect the hydro-mechanical properties of the material, such as permeability, e.g. creating a preferential flow path for radionuclide migration. Hydraulic conductivity increase within this zone must remain limited to preserve the natural barrier. In addition galleries are currently reinforced by different types of concrete supports such as shotcrete and/or prefab elements. Their purpose is twofold: avoiding partial collapse of the tunnel during drilling operations and limiting convergence of the surrounding rock. Properties of both concrete and rock mass are time dependent, due to shotcrete hydration and hydromechanical couplings within the host rock. By the use of a hydro-mechanical coupled Finite Element Code with a Second Gradient regularization, this paper aims at investigating and predicting support and rock interactions (convergence, stress field). The effect of shotcrete hydration evolution, spraying time and use of compressible wedges is studied in order to determine their relative influence