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Search Results: 1 - 10 of 37847 matches for " Marize Melo dos Santos "
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Dietary Knowledge, Behaviours and Attitudes of Students of Public School in a Northeastern City in Brazil  [PDF]
Marize Melo dos Santos, Adriana de Azevedo Paiva, José Ivo dos Santos Pedrosa, Rosangela Lopes Viana
Health (Health) , 2014, DOI: 10.4236/health.2014.611161
Abstract: This quasi-experimental intervention was conducted with 10- to 14-year-old students enrolled in public schools in Teresina, Brazil, to evaluate the effects of a nutritional education program on the students’ knowledge, behaviour and attitudes towards nutrition. The dietary attitudes were evaluated in terms of food tastes/preferences and food behaviours. The participants in the study included 126 students from four schools. Differences between before and after the intervention were found regarding knowledge about the “food pyramid”, “healthy eating” and “nutrients” (p < 0.05). There was reduction from 35% to 18.2% (p = 0.029) in the preference for unhealthy foods, such as greasy meats and processed foods. The students reported changes in their dietary behaviour in response to the intervention (p < 0.05). The educational model used in this study was shown to be effective for modifying the food and nutritional knowledge levels of the students and the associated dietary attitudes and practices.
Efetividade de diferentes estratégias de interven??o com ferro nos níveis de hemoglobina e ferritina em escolares de Teresina, Piauí, Brasil
Santos, Marize Melo dos;Nogueira, Nadir do Nascimento;Diniz, Alcides da Silva;
Cadernos de Saúde Pública , 2007, DOI: 10.1590/S0102-311X2007000700005
Abstract: this study evaluated the effectiveness of supplementation with ferrous sulfate and iron bis-glycinate chelate on hemoglobin and serum ferritin levels among schoolchildren (7-11 years) of both sexes. a randomized community-based trial including 138 anemic children (hemoglobin < 11.5g/dl) was conducted in teresina, piauí state, brazil. children were assigned to two treatment groups on an individual basis. one group (n = 71) received 40mg iron as ferrous sulfate once weekly and the other group (n = 67) received 3.8mg of iron bis-glycinate chelate-enriched cookies, 3x/week, for 8 weeks. the interventions showed a significant increase (p < 0.01) in hemoglobin levels (1.1g/dl) for children who received ferrous sulfate and 0.9g/dl in those who received iron bis-glycinate chelate, although not significant in the inter-group comparison (p > 0.05). no effect was observed on body iron for either intervention (p > 0.05). children with depleted iron stores (< 15ng/ml) at the beginning of interventions showed increased serum ferritin concentrations after 8 weeks (p < 0.01), although no difference between treatments (p > 0.05) was observed. the results confirm the effectiveness of the iron supplementation interventions and corroborate the use of iron salts or ferrous bisglycinate chelate on a weekly basis to overcome iron deficiency and anemia.
Concentra??es de hemoglobina e ferritina sérica em escolares da rede pública municipal de Teresina, Piauí, Nordeste do Brasil
Santos, Marize Melo dos;Diniz, Alcides da Silva;Nogueira, Nadir do Nascimento;
Revista Brasileira de Saúde Materno Infantil , 2008, DOI: 10.1590/S1519-38292008000400007
Abstract: objectives: to assess iron nutritional status of public school children in teresina, piauí, brazil. methods: a cross-sectional survey was conducted among 747 school children of both sexes, aged between seven and eleven years, who were randomly selected using a two-step sampling procedure, in august/september 2000. children with hemoglobin (hb) concentrations less than 11.5 g/dl were evaluated as anemic and low body iron (sfer< 15μg/l) was evaluated in 207 children. results: the prevalence of anemia was 14.3% (95%ci 12.2-17.4) and of low body iron 20.3% (95%ci 15.2-26.6). anemia and body iron depletion were not correlated with gender (p=0.60; p=0.96, respectively) or age group (p=0.85; p=0.53, respectively). sfer was not correlated (r=0.1; p=0.168) with hb concentrations. the prevalence of iron deficiency anemia (hb< 11.5g/dl and sfer< 15.0μg/l) was 26.3% (95%ci 17.3-37.5). conclusions: iron deficiency and anemia seem to be a public health problem among school children in teresina. concerted action to prevent and control these conditions is strongly recommended. however, all anemia cannot be explained by iron deficiency. therefore, it may be wise to consider other etiologies, such as micronutrient status, parasite infestation, hereditary disorders and exposure to environmental pollutants.
Study about Top-Down and Bottom-Up Controls in Regulating the Phytoplankton Biomass in a Eutrophic Reservoir in Northeastern Brazil  [PDF]
Juliana dos Santos Severiano, Ariadne do Nascimento Moura, Enaide Marinho de Melo Magalh?es, Viviane Lúcia dos Santos Almeida
Journal of Water Resource and Protection (JWARP) , 2012, DOI: 10.4236/jwarp.2012.48071
Abstract: This study aims to analyze the effects of nutrients and predation by zooplankton on phytoplankton biomass (chlorophyll a) in a eutrophic reservoir in Brazil (Apipucos Reservoir, State of Pernambuco), through experiments in microcosms. For this, samples of water were placed in 1 L Erlenmeyer flasks and kept for seven days. Treatments included the addition of nutrients (nitrogen combined with phosphorus and isolated additions of nitrogen and phosphorus), with presence and absence of zooplankton and a control which contained the reservoir water without any manipulation. The addition of nutrients did not stimulate phytoplankton growth. However, zooplankton significantly decreased phytoplankton biomass in the treatments it was added to (p < 0.05). The results of this study showed that for the reservoir studied, predation by zooplankton is the most significant factor in the regulation of phytoplankton, contradicting several studies which show that phytoplankton biomass is more strongly controlled by nutrients (bottom-up control) than by predation (top-down control).
Complete nucleotide sequence analysis of a Brazilian dengue virus type 2 strain
Santos Flávia Barreto dos,Miagostovich Marize Pereira,Nogueira Rita Maria Ribeiro,Edgil Dianna
Memórias do Instituto Oswaldo Cruz , 2002,
Abstract: In the last decade, dengue fever (DF) in Brazil has been recognized as an important public health problem, and an increasing number of dengue haemorrhagic fever (DHF) cases have been reported since the introduction of dengue virus type 2 (DEN-2) into the country in 1990. In order to analyze the complete genome sequence of a DEN-2 Brazilian strain (BR64022/98), we designed primers to amplify contiguous segments of approximately 500 base pairs across the entire sequence of the viral genome. Twenty fragments amplified by reverse transcriptase-PCR were cloned, and the complete nucleotide and the deduced amino acid sequences were determined. This constitutes the first complete genetic characterization of a DEN-2 strain from Brazil. All amino acid changes differentiating strains related to the Asian/American-Asian genotype were observed in BR64022/98, indicating the Asiatic origin of the strain.
Diagnosis of Dengue by Using Reverse Transcriptase-Polymerase Chain Reaction
Miagostovich Marize Pereira,Santos Flávia Barreto dos,Araújo Eliane Saraiva M de,Dias Juarez
Memórias do Instituto Oswaldo Cruz , 1997,
Abstract: A rapid identification of dengue viruses from clinical samples by using a nested reverse transcriptase-polymerase chain reaction (RT-PCR) procedure was carried out for diagnostic and epidemiological purposes. RT-PCR identified DEN-1 and DEN-2 viruses in 41% (41/100) of previously confirmed cases and provided an accurate confirmation of DHF in four fatal cases. RT-PCR was also useful for detecting and typing dengue viruses in suspected cases, allowing a rapid identification of new serotypes in endemic areas
Dengue in the State of Rio de Janeiro, Brazil, 1986-1998
Nogueira Rita Maria R,Miagostovich Marize P,Schatzmayr Hermann G,Santos Flávia B dos
Memórias do Instituto Oswaldo Cruz , 1999,
Abstract: This paper presents epidemiological, laboratory, and clinical data on 12 years of dengue virus activity in the State of Rio de Janeiro from the time the disease was first confirmed virologically in April 1986 through April 1998. DEN-1 and DEN-2 viruses are the serotypes circulating in the state and were responsible for the epidemics reported during the last 12 years. The results published here show both the impact of dengue virus infections on the population and laboratory advances that have improved dengue diagnosis.
Molecular typing of dengue virus type 2 in Brazil
Miagostovich Marize P.,Sequeira Patrícia C.,Santos Flávia B. dos,Maia Amanda
Revista do Instituto de Medicina Tropical de S?o Paulo , 2003,
Abstract: Strain typing is a critical tool for molecular epidemiological analysis and can provide important information about the spread of dengue viruses. Here, we performed a molecular characterization of DEN-2 viruses isolated in Brazil during 1990-2000 from geographically and temporally distinct areas in order to investigate the genetic distribution of this serotype circulating in the country. Restriction site-specific polymerase chain reaction (RSS)-PCR presented the same pattern for all 52 Brazilian samples, showing the circulation of just one DEN-2 variant. Phylogenetic analysis using progressive pairwise alignments from 240-nucleotide sequences of the E/NS1 junction in 15 isolates showed that they belong to genotype III (Jamaica genotype).
Incidência de ocratoxina A em café torrado e moído e em café solúvel consumido na cidade de Belo Horizonte, MG
PRADO Guilherme,OLIVEIRA Marize Silva de,ABRANTES Fabiana Moreira,SANTOS Luciana Gon?alves dos
Ciência e Tecnologia de Alimentos , 2000,
Abstract: A ocorrência de ocratoxina A foi verificada em amostras de café solúvel e café torrado e moído, comercializados em Belo Horizonte/MG, no período de outubro/1998 a maio/1999. O método usado para a determina o de ocratoxina A foi a cromatografia líquida de alta eficiência (CLAE) em combina o com cromatografia de imunoafinidade. Os valores de recupera o e coeficiente de varia o de ocratoxina A foram superiores a 73% e inferiores 15%, respectivamente. As amostras de café solúvel e café torrado e moído, continham níveis de ocratoxina A entre 0,31 e 1,78ng/g e 0,99 e 5,87ng/g, respectivamente. Os resultados revelaram que o café n o apresenta níveis de contamina o significativos.
Discrepancia Dentaria de Bolton y Finalización de Ortodoncia: Consideraciones Clínicas
dos Santos,Rogério Lacerda; Pithon,Matheus Melo;
International journal of odontostomatology , 2010, DOI: 10.4067/S0718-381X2010000100014
Abstract: discrepancies of the mesiodistal dimensions between upper and lower teeth as well as their effects on occlusion have been reported since the middle of the twentieth century. the aim of this study was to elucidate the importance of the applicability of the analysis of the bolton tooth size discrepancy in the orthodontic finalizing. cases involving caucasian male and female patients aged between 12 and 25 years were selected for study. analyses of the dental discrepancies were carried out before orthodontic treatment and after contention. basically, only patients having all permanent teeth before treatment (with first molars in both arches) were included. those cases of severely mutilated teeth, inadequate restorations, and tooth malalignment were ruled out because accurate measurement of the contacting points could not be performed. measurement of the mesiodistal tooth dimension was performed by only one operator using a digital calliper of a resolution of 0.001 mm (odin, germany) which had been previously calibrated for such procedures. it was measured the largest mesiodistal diameter. both previous and total relationships were calculated through their respective formulas according to bolton (1958). the orthodontic finalisation showed that bolton tooth size discrepancies involving either crowded dentition or lack of teeth can be compensated by mandibular or maxillary arch shape, buccal-lingual dimension, and axial inclination of the anterior teeth with no aesthetic or functional impairment.
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