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Search Results: 1 - 10 of 195700 matches for " Marques Silvia Helena de Paula "
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Digestive and functional properties of a partially hydrolyzed cassava solid waste with high insoluble fiber concentration
Raupp, Dorivaldo da Silva;Rosa, Danielle Amorim;Marques, Silvia Helena de Paula;Banzatto, David Ariovaldo;
Scientia Agricola , 2004, DOI: 10.1590/S0103-90162004000300008
Abstract: starch factories generate large amounts of cassava solid waste. a small amount is utilized for animal feed but most of it is discharged with deleterious effects to the envirounment. a edible food with a high content of insoluble dietary fiber (60.9%), named "partially hidrolyzed cassava waste" (phcw), was prepared from industrial cassava solid waste by an enzymatic process. phcw or wheat bran (wb) were fed to model rats and both promoted digestive function effects, but phcw produced the greatest effect. the insoluble fiber constituent from phcw (and not the soluble fiber), promoted the greatest fecal bulking, fecal weight and defecation frequency in rats, as compared to wb. such results indicate that the partially hydrolyzed cassava waste presents digestive function properties which allow it to be used as an adequate source of insoluble dietary fiber in the formulation of functional food for human nutrition.
Arraste via fecal de nutrientes da ingest o produzido por baga o de mandioca hidrolisado
Raupp Dorivaldo da Silva,Marques Silvia Helena de Paula,Rosa Danielle Amorim,Caldi Carla Marielle
Scientia Agricola , 2002,
Abstract: A ingest o de fibras alimentares pode resultar em arraste de outros nutrientes para as fezes. Baga o de mandioca produzido por polvilheira foi submetido à hidrólise enzimática para obten o de um produto mais concentrado em fibra alimentar insolúvel denominado de baga o de mandioca hidrolisado (BMH). O BMH foi avaliado em ensaios biológicos com ratos Wistar quanto a sua habilidade de arrastar os nutrientes da ingest o para as fezes, tendo como padr o de fibra o farelo de trigo (FT). Acréscimo à dieta base, substituindo igual quantidade de amido, de dose de 5%, 15% ou 25% de BMH promoveu arraste significativo de minerais (globalidade) ou proteína; dose de 15% ou 25% promoveu arraste significativo de lipídeo; e, dose de 25% promoveu arraste significativo de carboidrato digestível. Dose de 25% de FT produziu arraste significativo de minerais (globalidade), proteína ou carboidrato digestível, mas, o lipídeo n o foi arrastado. BMH produziu efeito mais pronunciado que FT em arrastar minerais (globalidade) ou proteína para a dose de 5% ou 15%; no entanto, para a dose alta, de 25%, as fontes produziram efeitos semelhantes em arrastar a proteína, mas o FT promoveu maior arraste de minerais (globalidade). N o houve diferen a entre fontes, BMH e FT, em arrastar lipídeo ou carboidrato digestível para as fezes. Na dose alta (25%) o BMH promoveu efeitos, no máximo, semelhantes ao FT, em arrastar para as fezes os nutrientes da ingest o; assim, é recomendado como fonte alternativa de fibra alimentar insolúvel para a formula o de alimentos funcionais-digestivos.
Digestive and functional properties of a partially hydrolyzed cassava solid waste with high insoluble fiber concentration
Raupp Dorivaldo da Silva,Rosa Danielle Amorim,Marques Silvia Helena de Paula,Banzatto David Ariovaldo
Scientia Agricola , 2004,
Abstract: Starch factories generate large amounts of cassava solid waste. A small amount is utilized for animal feed but most of it is discharged with deleterious effects to the envirounment. A edible food with a high content of insoluble dietary fiber (60.9%), named "partially hidrolyzed cassava waste" (PHCW), was prepared from industrial cassava solid waste by an enzymatic process. PHCW or wheat bran (WB) were fed to model rats and both promoted digestive function effects, but PHCW produced the greatest effect. The insoluble fiber constituent from PHCW (and not the soluble fiber), promoted the greatest fecal bulking, fecal weight and defecation frequency in rats, as compared to WB. Such results indicate that the partially hydrolyzed cassava waste presents digestive function properties which allow it to be used as an adequate source of insoluble dietary fiber in the formulation of functional food for human nutrition.
Arraste via fecal de nutrientes da ingest?o produzido por baga?o de mandioca hidrolisado
Raupp, Dorivaldo da Silva;Marques, Silvia Helena de Paula;Rosa, Danielle Amorim;Caldi, Carla Marielle;Cremasco, Ana Candida Vivan;Banzatto, David Ariovaldo;
Scientia Agricola , 2002, DOI: 10.1590/S0103-90162002000200005
Abstract: dietary fiber can drag nutrients in faeces. cassava waste from starch industry can be hydrolyzed by an enzymatic process and give origin to a food with high content of insoluble dietary fibers, named partially hydrolyzed cassava waste (hcw). hcw or standard wheat bran (wb) were fed to model growing rats in order to assess their dragging skill of nutrients from the intake of faeces. addition of 5%, 15% or 25% hcw, in replacement of starch, promoted a significant dragging proportion for the overall minerals or proteins; addition of 15% or 25% hcw dragged a significant proportion of lipids and the addition of 25% hcw dragged a significant proportion of digestible carbohydrates. adding 25% wb caused significant dragging of total minerals, protein and digestible carbohydrates, lipids were, however, not dragged with wb treatment. hcw promoted a more pronounced effect as compared to wb in regard to the dragging process of total minerals or proteins for 5% or 15% additions. nervertheless, for high rates, such as 25% additions, both fibrous sources produced similar effects on the dragging of protein, but wb promoted the greatest dragging process of total minerals. no differences between both fiber sources were observed as to their abilities of dragging lipids or digestible carbohydrates into faeces. with high rates (25%) hcw promoted effects similar to wb, allowing to conclude that hcw might be used as an important alternative source of insoluble dietary fiber for the formulation of digestive-functional feeds.
The Contribution of Waves in Mixing Processes of the Patos Lagoon Plume  [PDF]
Eduardo de Paula Kirinus, Wiliam Correa Marques, Julliet Correa da Costa, Elisa Helena Le?o Fernandes
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.35102
Abstract: The analysis of wave effects above salinity is important in order to define mixing processes and their potential to change density gradients, since action in the region of the Patos Lagoon plume is highly dynamic. This paper aims to evaluate the influence of waves on the mixing pattern of the adjacent continental shelf. Constantly marked by tides and circulation variations, changing from flood to ebb tide, salinity stands as a major parameter for analysis. The study is based on hydrodynamic numerical modeling experiments using the TELEMAC3D model and waves generated by the wind using the TOMAWAC coupled model. The comparison between the situations considering the waves generated by the wind and without waves was made through time series analysis, stratification series, transversal cross sections, longitudinal cross sections, salinity mean fields and diagrams by Richardson and Brünt-V?is?l?s frequency parameters. With the cross sections analysis, the mixing effect generated by the waves was observed, demonstrating clearly that the waves were capable of raising the superficial salinity in regions far from the Patos Lagoon entrance, while at the entrance, the wave effects enhanced the mixing on the deepest layers, decreasing the saline intrusion and expanding the plume more radially on the surface. The space-temporal diagrams were effective to demonstrate the modulation effect of the waves over the salt mixing of saline waters, revealing that wave effects decrease the stratification as well as the Brünt-V?is?l?s frequency and increase the period of buoyancy, due to the mixing increase.
Exploring the Project Potential of Marine Current Turbines: A Case Study in the Southern Brazilian Shelf Region  [PDF]
Juliana Tavora Bertazo Pereira, Eduardo de Paula Kirinus, Wiliam Correa Marques, Tiago Borges Ribeiro Gandra, Gustavo Pessoa de Barros, Helena Barreto Matzenauer
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.513126
Abstract: The application of marine current turbines for electricity generation could offer a distinct advantage over other renewable energy sources due to the regular and predictable nature of this resource. This paper details the application of Analytical Hierarchy Process (AHP) as a possible tool for decision makers to better understand the environment and the impacts of the marine current turbines. The best areas for generating energy from the currents were found using a tridimensional model (TELEMAC3D). In addition to applying the energy conversion module, these regions were also evaluated for energy production, which was then applied to the AHP. Several databases (Transmission and Transport, Socioeconomic, Conservation Units, Endangered Species and Geological Information) were compared to minimize decision deviation. The results showed the viability of the northern region of the Southern Brazilian Shelf (SBS) as a possible area to harvest energy from the currents, as much of the studied region was limited by human activities in the coastal zone and sensitive biological resources.
Presence of the Genes cagA, cagE, virB11 and Allelic Variation of vacA of Helicobacter pylori Are Associated with the Activity of Gastritis  [PDF]
Pedro Pinheiro de Negreiros Bessa, Francivandi Coelho Barbosa, Ana Paula Santos do Carmo, Gildo Barreira Furtado, Fernanda Capelo Barroso, Silvia Helena Barem Rabenhosrt
Open Journal of Gastroenterology (OJGas) , 2014, DOI: 10.4236/ojgas.2014.411049
Abstract: Non-atrophic active chronic gastritis (ACG) is characterized by the presence of H. pylori in the gastric epithelium, known to be one of the first steps that precede progression to gastric adenocarcinoma. Inactive chronic gastritis (ICG) suggests that the patient has H. pylori gastritis, but this diagnosis is rarely made in routine histopathology. Clinical manifestations associated with H. pylori infection are potentially due to differences in virulence between strains; however, it is unclear if the progression of ACG to ICG depends on the H. pylori strain. The aim of this study was to compare the prevalence of the virulence factors of H. pylori found in patients with ACG and ICG, and its influence on the development of ICG. A significant association was observed between H. pylori detection by histological examination and the activity of gastritis (p < 0.01). Long-term use of proton pump inhibitors (PPI) (>1 year) was reported by 28.6% of the ACG group and 42.5% of the ICG, while no evidence of association between long-term use of PPI and decreased inflammation was found in the patients studied. The genes cagA, cagE and virB11 were statistically associated with ACG (p = 0.01, p < 0.001 and p = 0.002, respectively). In the vacAs1 allele groups, ACG was associated with the most virulent group (p = 0.0015), while ICG was associated with the less virulent group (p < 0.001). The rate of co-infection was significantly higher in ICG than in ACG cases (p = 0.02). In conclusion, this study points to the role of virulent strains of H. pylori in the non-resolution of gastritis.
Participa??o social e protagonismo: reflex?es a partir das Conferências de Direitos da Crian?a e do Adolescente no Brasil
Lazzaretti De Souza,Ana Paula; Finkler,Lirene; Dalbosco Dell'aglio,Débora; Koller,Silvia Helena;
Avances en Psicología Latinoamericana , 2010,
Abstract: this paper examines the children and young people?s participation and protagonism rights based on the conferences on children and adolescents rights? experience in brazil, based on childhood sociology. conferences? documents were consulted on the brazilian government websites. these study findings revealed that young people?s participation has increased in the last conferences. however, it is necessary to promote a systematic and genuine participation through democratic relations construction in all development contexts where children and adolescent live in order to modify their life and society participative practices.
Aprendiz versus trabalhador: adolescentes em processo de aprendizagem
Amazarray, Mayte Raya;Thomé, Luciana Dutra;Souza, Ana Paula Lazzaretti de;Poletto, Michele;Koller, Silvia Helena;
Psicologia: Teoria e Pesquisa , 2009, DOI: 10.1590/S0102-37722009000300006
Abstract: this study aimed to know the experience of adolescents in labor insertion process. the participants were 10 adolescents of both sexes, aged 15 and 16 years old, with an apprenticeship contract at a public enterprise. it was used a qualitative approach, with the application of a biosociodemographic questionnaire and focal groups. four thematic categories were created: being adolescent, apprentice versus worker, meaning of work and professional future. the results revealed fusion between the worker and apprentice roles. the experience of apprenticeship was perceived as a privileged practice for professional training. expectancies about the professional future revealed insecurity and lack of information related to labor market. this study showed the importance of the experience of apprenticeship to build worker identities and of counseling programs for adolescents.
Determina??o de ácido acéttico em amostra de vinagre adulterada com ácido clorídrico - um experimento integrado de titula??o potenciométrica e condutométrica
Martins, José Vinicius;Souza, Ana Paula Ruas de;Salles, Maiara Oliveira;Serrano, Silvia Helena Pires;
Química Nova , 2010, DOI: 10.1590/S0100-40422010000300049
Abstract: the determination of acetic acid in vinegar adulterated sample using simultaneous potentiometric and condutometric titrations was used as an example of integrated experiment in instrumental analysis. an excel? spreadsheet, which allows the entry of simultaneous data and the construction of the superimposed experimental curves (condutometric, potentiometric, first and second derivative potentiometric curve and, distribution diagrama of the acetic species as function of ph), was used as powerful tool to discuss the fundamental concepts involved in each technique and choose the best of them to quantify, without mutual interference, h3ccooh and hcl in vinegar adulterated sample.
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