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Registros recuperados: 208
Primeira ... 34567891011 ... Última
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Relationship between climatic factors and air quality with tuberculosis in the Federal District, Brazil, 2003-2012 BJID
Fernandes,Fernanda Monteiro de Castro; Martins,Eder de Souza; Pedrosa,Daniella Melo Arnaud Sampaio; Evangelista,Maria do Socorro Nantua.
Abstract Introduction: Despite the high rate of tuberculosis indicators in Brazil, the Federal District shows a low prevalence of the disease. Objective: To analyze the relationship between climatic factors and air quality with tuberculosis in the Brazilian Federal District. Methodology: This was an ecological and descriptive study comparing 3927 new cases of Tuberculosis registered at the Federal District Tuberculosis Control Program with data from the National Institute of Meteorology, Brazilian Institute of Geography and Statistics, Brazilian Agricultural Research Institute, Brasilia Environmental Institute, and the Federal District Planning Company. Results: From 2003 to 2012, there has been a higher incidence of Tuberculosis (27.0%) in male...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tuberculosis; Seasonality; Air pollution.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400369
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Epidemiological aspects of rotavirus infections in Minas Gerais, Brazil BJID
Silva,Maria Luzia da Rosa e; Naveca,Felipe Gomes; Carvalho,Iná Pires de.
In order to develop good polices regarding public health measures and vaccine use to prevent rotavirus induced gastroenteritis, the epidemiology of the illness in various regions of Brazil is necessary. Accordingly, this study was to detect the frequency and types of rotavirus in one city in a tropical part of Brazil. This is an epidemiological survey of pediatric gastroenteritis caused by rotavirus conducted in Juiz de Fora, Minas Gerais State, Brazil. We analyzed 656 in-patient (190) and out-patient (466) stool samples from children ages 0 to 5 years during 1998. Rotavirus detection was performed using polyacrylamide gel electrophoresis (PAGE). Rotavirus was isolated from 62/190 stool samples (32.6%) from hospitalized children and 16/466 (3.4%) from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rotavirus; Gastroenteritis; Epidemiological survey; Seasonality; Electrophoretic patterns.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000400007
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Prevalence of diarrheogenic Escherichia coli and rotavirus among children from Botucatu, São Paulo State, Brazil BJMBR
Rodrigues,J.; Acosta,V.C.; Candeias,J.M.G.; Souza,L.O.; Filho,F.J.C..
In a one-year prospective study carried out to define the role of rotavirus and Escherichia coli in local childhood diarrhea, we determined the prevalence of both agents in 54 diarrheic children attending a health center in Botucatu. Diarrheogenic E. coli (DEC) strains were characterized by O:H serotyping, a search for virulence genetic markers, and assays of adherence to HEp-2 cells. Except for enteroaggregative E. coli (EAEC), no other DEC category was detected in the children's stools. Both EAEC and rotavirus were isolated from 22 of the 54 (41.0%) diarrheic children as single agents or in combination with other enteropathogens. However, when considering the presence of a single agent, EAEC was dominant and isolated from 20.4% of the patients, whereas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diarrhea; Rotavirus; Enteroaggregative E. coli; Escherichia coli; Seasonality.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002001100008
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Daily birth numbers in Passo Fundo, South Brazil, 1997-1999: trends and periodicities BJMBR
Mikulecky,M.; Lisboa,H.R.K..
Between October 6, 1997 and April 30, 1999, 5011 births (mean: 8.76 per day) were registered in the city of Passo Fundo, South Brazil. The sequence of 572 daily birth numbers was not random (iteration test). Neyman distribution (m = ¥) showed the best fit. Clusters of days with higher birth numbers alternated with days with low numbers of births. Periodogram analysis revealed a significant periodicity of 6.98 days. The cosinor regression, testing 10 a priori supposed period lengths, found significant seasonality peaking in August-September and significantly highest birth numbers on Thursdays. Among the lunar and solar rotation cycles, the tropic lunar cycle and its 4th harmonic were most pronounced, in agreement with results concerning natality in Germany...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Births; South Brazil; Periodogram; Cosinor; Seasonality; Weekly rhythm; Multiseptans; Cosmogeophysical-biomedical parallelism; Solar and lunar cycles.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000800017
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Characterization saprobic fungi on leaf litter of two species of trees in the Atlantic Forest, Brazil BJM
Costa,Loise Araujo; Gusmão,Luís Fernando Pascholati.
Abstract We investigated the composition and structure of fungal communities associated with leaf litter generated by Clusia nemorosa and Vismia guianensis that belong to phylogenetically-related botanical families and exist together in a remnant of the Atlantic Forest in Bahia, Brazil. Samplings were conducted during wet (June 2011) and dry (January 2013) seasons in Serra da Jibóia. The fungi were isolated using particle filtration and the 1,832 isolates represented 92 taxa. The wet season yielded the largest number of isolates (1,141) and taxa (76) compared with the dry season (641 isolates and 37 taxa). The richness and diversity of fungal species associated with C. nemorosa (64 taxa, Simpson=0.95)were higher compared with those of V.guianensis (59...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fungal communities; Seasonality; Rainforest; Diversity; Fungal ecology.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401027
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Human respiratory syncytial virus detection in children admitted at a community hospital in Botucatu, SP, Brazil BJM
Bosso,Patrícia Alves Ramos; Candeias,João Manuel Grisi; Paduan,Karina dos Santos; Ricchetti,Sandra Mara Queiroz; Miranda,Antero Frederico Macedo de; Rugolo,Lígia Maria Suppo de Souza; Durigon,Edison Luiz; Ventura,Armando Morais.
Human Respiratory Syncytial Virus (HRSV) is recognized as the single most important pathogen responsible for acute viral infection of the lower respiratory tract in young children. In this study, 84 samples from children under two years of age presenting acute respiratory symptoms were obtained from September 2000 to November 2001. Analysis by immunofluorescence and reverse-transcription followed by PCR, revealed that 18% (15/84) of all the samples were positive for HRSV, in which 80% (12/15) of the cases was observed in children under six months of age and the subgroups A and B co-circulated in the studied period. These are the first data obtained for Botucatu city and seasonality is evident by the higher circulation of the virus between May and July.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Human Respiratory Syncytial Virus (HRSV); RT-PCR; Immunofluorescence; Seasonality.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300015
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Some aspects of citrus ecophysiology in subtropical climates: re-visiting photosynthesis under natural conditions Braz. J. Plant Physiol.
Ribeiro,Rafael V.; Machado,Eduardo C..
In this review we re-visit and discuss the current knowledge on ecophysiology of citrus trees, addressing the influence of environmental conditions on citrus photosynthesis. Knowledge of physiological responses of citrus trees to their surrounding environment is essential in order to improve crop production and plant development, both being consequences of appropriate horticultural management in citrus orchards. In this context, citrus photosynthesis is addressed as the primary source of carbon and energy for plant growth and development. The photosynthetic activity on both a daily and a seasonal scale is reviewed, taking into consideration the physiological aspects related to seasonal variation of photochemical and biochemical activities, stomatal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbohydrate; Citrus; Chlorophyll fluorescence; Gas exchange; Seasonality.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400009
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Milk composition of Holstein cows: a retrospective study Ciência Rural
Bondan,Carlos; Folchini,Jéssica Aneris; Noro,Mirela; Quadros,Daniel Lazzari; Machado,Karine Martini; González,Félix Hilário Diaz.
ABSTRACT: Worldwide, milk analysis is an satisfactory measurement of milk quality on dairy farms. Milk composition is the base for payment systems, so knowledge of its characteristics at different periods is essential for modern dairy producer. The aim of the study was to evaluate the effects of year, season, stage of lactation, and lactation number on variations in milk yield and composition of Holstein cows (n=148,604). Milk yield estimated by multiple regression was 25,50L/cow/day. Winter was the season with the highest milk yield and the highest protein and lactose content. Milk fat was highest in the fall, in cows in late lactation and also in primiparous cows. Lactating cows from 6 to 60 days in lactation and those in 2nd or 3rd lactation showed the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Milk quality; Lactation number; Seasonality; Stage of lactation.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200650
Registros recuperados: 208
Primeira ... 34567891011 ... Última
 

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