Osmotic dehydration of mango with ascorbic acid impregnation: influence of process variables

The present study investigated the osmotic dehydration (OD) of mangoes cv.Palmer, dehydrated in a sucrose solution with added ascorbic acid (AA), aiming toevaluate the influence of the process variables (sucrose concentration, AA concen-tration and time) on vitamin C, water, sugars and total phenolic compound (TPC)contents by way of an analysis of the effects and the variance of the factors. Thesucrose concentration did not affect the vitamin C content, but the AA concentra-tion in the solution and the process time exerted a positive influence on thisresponse. The addition of AA also presented a significant positive effect on theTPC contents because this vitamin interferes with the quantification of the TPC.On discounting the interferences, no losses of phenolic compounds were found.Impregnation with vitamin C during OD was shown to be effective in obtainingminimally processed mangoes with high nutritional value.

Oxide surface modification: Synthesis and characterization of zirconia-coated alumina

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

Avaliação de lagoas de lemnáceas no polimento de esgoto doméstico e produção de biomassa

Pós-graduação em Engenharia Civil - FEIS

Diagnóstico ambiental da bacia hidrográfica do córrego do Bugre em Alumínio - SP

Pós-graduação em Ciências Ambientais - Sorocaba

Desenvolvimento de catalisadores sem platina: estudos comparativos da oxidação de metanol em 'PD''RU'/'C' e 'PT''RU'/'C' em meio alcalino

Pós-graduação em Química - IQ

Eradication of a Mature Methicillin-Resistant Staphylococcus aureus (MRSA) Biofilm From Acrylic Surfaces

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Qualidade hídrica e morfometria da microbacia do córrego da Fazenda Glória, Taquaritinga-SP

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Efeito de treinamento de saltos verticais e do destreinamento sobre a expressão gênica de vias energéticas da musculatura esquelética de ratos Wistar induzidos à obesidade

Pós-graduação em Fisioterapia - FCT

Local structure and hybridization states in Ba0.9Ca0.1Ti1-xZrxO3 ceramic compounds: Correlation with a normal or relaxor ferroelectric character

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

The effect of alloying in Pt-Sn/C electrocatalysts in the performance of a direct ethanol fuel cell

Work on Pt-Sn-C catalysts for ethanol oxidation showed that a thermal treatment at moderate temperatures leads to a significant increase in activity. The best activity was observed for Pt3Sn1 thermally treated at 200 degrees C and ascribed to a Pt3Sn1 phase plus a cleaning effect. However, electronic effects may be very important and these were not evaluated in the Pt3Sn1 phase. Therefore, in this work we investigated the effect of the degree of alloy on the electronic structure of Pt3Sn1 electrocatalysts by performing electrochemical in situ X-ray absorption (XAS) experiments in the Pt L-III XANES region. Overall, the results show that although the occupancy of the Pt 5d band depends on the degree of alloy other factors, such as the presence of tin oxides/hydroxides in the materials, have to be considered to understand the performance of the DEFC.

Structural study of copper oxide supported on a ceria-modified titania catalyst system

A structural study of CuO supported on a CeO2-TiO2 system was undertaken using X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS) techniques. The results of XRD revealed the presence of only two phases, TiO2 anatase and CeO2 cerianite. A trend towards smaller TiO2 crystallites was observed when cerium content increased. When the amount of cerium increased, Ti K-edge XANES analysis showed an increasing distortion of Ti sites. The results of Ce LIII-edge EXAFS showed that Ce atoms are coordinated by eight oxygen atoms at 2.32 Å. For the sample containing a small amount of cerium, the EXAFS analysis indicated that the local structure around Ce atoms was highly distorted. The catalysts presented quite different Cu K-edge XANES spectra compared to the spectra of the CuO and Cu2O reference compounds. The Cu-O mean bond length was close to that of the CuO and the Cu atoms in the catalysts are surrounded by approximately four oxygen atoms in their first shell. Copper supported on the ceria-modified titania support catalysts displayed a better performance in the methanol dehydrogenation when compared to copper supported only on titania or on ceria. © 2002 Plenum Publishing Corporation.

Comportamento ingestivo, desempenho e características de carcaça de cordeiros semi-confinados em sistema integrado de produção

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Avaliação sazonal de alguns parâmetros indicadores da qualidade de água no reservatório da usina hidrelétrica de Ilha Solteira-SP, Brasil

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

As diretrizes curriculares para os cursos de Educação Física no Brasil: uma breve revisão cronológica e análise desse processo sobre as implicações para a formação profissional

The law of Guidelines and Bases for National Education-LDB established the need to ensure at Universities a greater flexibility in the Organization of courses and careers, taking into account the heterogeneity of prior education and training, as well as the expectations and interests of students. Since the deployment of the first courses of Physical Education in Brazil, in the 30 's decade, the formation was only in Degree Course. On a pioneer way, resolution CFE 031987 allowed the Universities could organise their own pedagogical projects and curriculum, allowing even the Bachelor Course contemplating the dynamics of the evolution of the area and encouraging a change in attitudes of professionals. The Bachelor Course, with an offer of disciplines to other areas higher than education, openness also allowed to research, promoting an increasing interaction of the Physical Education with other professions od health. Physical education stands out as interareas instrument in the promotion of health and quality of life of the population. With the regulation of the Profession through the law No. 9696/98, grows the discussion around the definition of professional delimitations in this close relationship with other areas. With the need for a reformulation in teaching projects, Degree and Bachelor Courses, express the new curricular guidelines and resolutions of the MEC, as well as the professional delimitations by CONFEF for each formation. Given these aspects, the objective of the present study was to describe the chronology of such facts and a expose a critical opinion of the authors about the course and consequences of this process.

Simulação de modelagem qualitativa para avaliação preliminar da qualidade da água na Bacia do Ribeirão das Perdizes em Campos do Jordão/SP, como subsídio ao enquadramento

The purpose of this research was to present the principles for the implementation of a future water body classification program at the UGRHI-1 (Management Unit of Water Resources-1/São Paulo, Brazil) using qualitative and quantitative water modeling. Our study area was in Campos do Jordão, a city in the state of São Paulo, specifically in the Perdizes river watershed, which is included in the UGRHI-1. The water quality assessment used a modeling mehtodology that can support a future study for the classification of water bodies in the region. The behavior of DO and BOD parameters was assessed in the water quality scenarios, considering the variations of flows, loads, reductions in withdrawals and different efficiencies in sewage treatment. The model used was QUAL2E developed by USEPA (United States Environmental Protection Agency) that received a new graphic interface named QUAL2R model. The reference flows Q7,10, Q95% and Qm used were obtained through the DAEE (Department of Water and Electric Energy) hydrologic regionalization method. It was noted that of the 9 proposed scenarios, only scenario 6 that was predicted in the flow regime Qm with the existence of a treatment system capable of removing 93% of the BOD, in the Perdizes River remained 67.5% of the time in class 2. Scenario 8 predicted a 50% reduction in In scenario 8 a reduction of 50% in the flow captured in CA-04, associated with the efficiency of 93% of BOD removal keeping the river in class 2. In scenario 9 the minimum required efficiency in sewage treatment in the flow regime Q95% for keeping the river in class 2 was also calculated and the value of 94.7% was obtained.