1000 resultados para Índice de refração
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Estudou-se, a influncia de culturas lticas no ndice de protelise do queijo Minas Frescal, processado com leite no pasteurizado e pasteurizado. O emprego de culturas lticas na elaborao de queijo Minas Frescal pode ser indicado, uma vez que o ndice de protelise s se correlacionou com o tempo de conservao.
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OBJETIVO: Analisar a concordncia e eficincia de trs valores crticos para ndice de massa corporal (IMC) na indicao da obesidade abdominal e do excesso de gordura corporal em adolescentes. MTODOS: Anlise transversal, em que participaram do estudo 807 jovens, de ambos os sexos (entre 11 e 17 anos), e foram aferidos valores de massa corporal, estatura, circunferncia de cintura e gordura corporal relativa. A curva ROC analisou a eficincia dos pontos de corte para ndice de massa corporal. RESULTADOS: Os trs valores crticos analisados apresentaram moderada concordncia na indicao da obesidade abdominal (0,54 a 0,66) e elevados valores de sensibilidade (77,4% a 92,8%) e especificidade (75,6% a 91,6%) para a indicao do estado nutricional. A proposta nacional foi mais sensvel na indicao de concomitante excesso de gordura corporal e obesidade abdominal (97,8%). CONCLUSO: Todos os valores crticos analisados apresentaram desempenho similar na indicao do estado nutricional e da obesidade abdominal, no entanto a proposta nacional foi mais sensvel na indicao de indivduos obesos com elevado risco cardiovascular.
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OBJETIVO: avaliar a qualidade da dieta da populao idosa do municpio de Avar (SP) atravs do Índice de Alimentao Saudvel (IAS) MTODOS: trata-se de um estudo de corte transversal de base populacional realizado por meio de entrevista domiciliar. A amostra constou de 73 indivduos, sorteados aleatoriamente dos idosos integrados ao Sistema Pblico de Sade do Municpio. O consumo alimentar foi medido por meio de 3 Recordatrios de 24 horas. Para avaliao, foi aplicado o IAS adaptado para a populao brasileira. Parte-se do princpio que o presente estudo constitui o primeiro no Brasil a aplicar o IAS utilizando 3 inquritos do tipo recordatrio de 24 horas em populao idosa. Optou-se por esta metodologia, pois como descrito na literatura, um nico dia no representa a ingesto habitual de um indivduo devido elevada variabilidade intrapessoal do consumo. RESULTADOS: Foram encontrados 32,9% de idosos com uma dieta de m qualidade; 60,3% necessitando de melhorias e 6,8% com uma dieta de boa qualidade. CONCLUSO: Pode-se concluir que os idosos estudados precisam de melhorias na alimentao, o que ressalta a importncia de poltica de incentivo voltado alimentao saudvel na terceira idade.
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OBJETIVO: O objetivo deste estudo foi adaptar e aplicar o Healthy Eating Index norte-americano para avaliar a qualidade da dieta de indivduos (n=50) moradores em Botucatu, So Paulo, Brasil. MTODO: O consumo alimentar foi medido por meio do mtodo Recordatrio 24 horas e, para avaliao, foi utilizado o Índice de Qualidade da Dieta adaptado. O ndice foi obtido por uma pontuao distribuda em dez componentes que caracterizam diferentes aspectos de uma dieta saudvel. RESULTADOS: O valor mdio do Índice de Qualidade da Dieta foi de 51,5, com 12% dos indivduos apresentando dieta saudvel; 74%, em dietas necessitando modificaes e 14%, em dieta inadequada. A anlise do coeficiente de correlao entre os escores do Índice de Qualidade da Dieta apresentou associao inversa estatisticamente significante (p<0,05) com a porcentagem de gordura total, a porcentagem de gordura saturada, o colesterol e o sdio. Apresentaram associao positiva estatisticamente significante em relao ao Índice de Qualidade da Dieta o retinol e a fibra. CONCLUSO: Os resultados indicam a viabilidade de aplicao do Índice de Qualidade da Dieta na populao estudada.
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OBJETIVO: Avaliar o ndice de qualidade da dieta de adolescentes residentes no Distrito do Butant do municpio de So Paulo, SP. MTODOS: Estudo transversal de base populacional com uma amostra de 437 adolescentes, de ambos os sexos, com idade entre 12 e 19 anos. Foram obtidas amostras probabilsticas em dois estgios, setor censitrio e domiclio, da rea estudada. O consumo alimentar foi medido pelo mtodo recordatrio de 24 horas e a qualidade da dieta avaliada pelo Índice de Qualidade da Dieta adaptado para a realidade local. RESULTADOS: Dos adolescentes avaliados, 4% apresentaram dieta saudvel, 68% dieta que necessita de melhora e 28% dieta inadequada. O sexo masculino apresentou maior pontuao para os componentes do Índice de Qualidade da Dieta cereais, hortalias, leguminosas e variedade da dieta. O aumento no nmero de anos de estudo do chefe da famlia apresentou-se associado ao maior consumo dos grupos de alimentos: cereais, verduras e legumes, leite e produtos derivados e variedade de alimentos; a relao foi inversa para o grupo de leguminosas e sdio. CONCLUSO: A maioria dos adolescentes estudada no segue as recomendaes dietticas preconizadas, fato que pode comprometer a sade futura desses indivduos.
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A nutritional survey was carried out in 93 vineyards of the wine regions of Jundiai, Sao Miguel Arcanjo and Jales (state of So Paulo-Brazil), aiming to compare the nutrient concentration in leaf samples, the concentration of nitrate and potassium in the petiole sap and the relative chlorophyll index (IRC) of 'Niagara Rosada' vineyard. Leaves, blade and petiole in full bloom vines were sampled in 20 plants selected from each vineyard, and evaluations of the IRC in the leaf blade and the levels of NO3-and K in the petioles sap were realized. Macro and micronutrients concentrations were measured in leaf samples. The sampled vineyards were grouped by region of study, and each vineyard was considered as a replicate sample, totaling 45, 24 and 24 repetitions, in Jundiai, Sao Miguel Arcanjo and Jales, respectively. Sampled vineyards from the Jales region showed higher leaf concentrations of P, K, Ca, Mg, S, Fe and Mn, and also higher IRC and levels of nitrate and potassium in the petiole. These differences were related to the different rootstocks used, which were 'IAC 766', 'IAC 572' and 'Riparia of Traviu', respectively, for Jundiai, Jales and Sao Miguel Arcanjo. The differences highlight the need to adjust the concentration ranges of nutrients in leaf analysis, through regional trials, taking into account the rootstock and the region under study.
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The objective was to evaluate the leaf area index of six different grasses. The experiment was installed at the Instituto Federal de Tecnologia e Educacao of Uberaba, using a randomized block design with split plots in time. The plots were sown: Brachiaria decumbens cv. Basilisk, Brachiaria brizantha cv. Marandu, Panicum maximum cv. Mombasa, Panicum maximum cv. Tanzania, Brachiaria brizantha cv. Xaraes, Cynodon dactylon hb. Tifton and the plots, ten seasons of evaluation in 10 x 6 factorial arrangement with four replications. Rates of leaf area of each forage at different times of year were evaluated. Compared to other forage species, Panicum maximum had a higher leaf area index when subjected to periodic fertilization and irrigation. Only in the late fall Brachiaria Xaraes IAF had increased, but did not differ significantly from the others.
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This paper presents the identification of tectonic deformation through the application of the stream-gradient index (slope x length) method in the Rio do Peixe hydrographic basin, located in western State of S o Paulo. The main principle used is that river valleys are the best tools for this type of analysis because of their fast adjustment to even the most gentle crustal deformations. This type of analysis for structural studies is extremely useful in the western region of the State of So Paulo, where deep chemical weathering results in a thick regolith and scarce outcrops. The stream length index is the ratio of the altimetric amplitude of each drainage and the natural logarithm of its length. The value obtained is plotted on maps at the median point of each drainage, allowing the drawings of lines with the same values (isodefs). Three anomalies (A, B and C) were identified along the Rio do Peixe valley representing uplift sectors indicated by the formation and distribution of Upper Quaternary deposits in terraces and modern fluvial plains and alluvial fans. In correlation with known tectonic data for this region it is possible to attribute the A and B anomalies to the Ribeiro Preto and Presidente Prudente crustal sutures, respectively. The smaller C anomaly needs further field investigation, but it could be associated with the Trs Lagoas crustal suture. It must be emphasised that these sutures are inherited from the Precambrian Basement which had a strong influence on the Phanerozoic evolution in the whole sedimentary and volcanic stratigraphic pile of the Paran Basin and on the dominant structural lineaments directions developed therein .The A, Band C anomalies are suggestive of renewed uplift as a result of neotectonic action in modern times.
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Purpose: To show the importance of the cicloplegic method in the refraction evaluation comparing the automated refraction (subjective and objective) and the subjective static refraction. Method: One-hundred patients (200 eyes) between 5 and 40 years were prospectivelly evaluated according the static and dynamic automated refraction and the subjective static refraction, using an automated refractor Nidek ARK - 900. The data were submitted to statical evaluation. Results: The concordance indices were better after cycloplegia mainly in relation of the spheric degree and clindric axes. Conclusion: Cycloplegia is very important to have accurace in the automated refraction in patients before 40 year-old.
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The tractor is one of the machines that more traffics over the soil during the processes involving agricultural production. The interaction tractor/soil is made by the tires which, in most of the cases, are pneumatic. The tire type and the tractor travel speed, interfere directly on the pressure over the soil. One of the techniques employed to evaluate the alterations that tractor traffic causes in the soil is to measure its Cone Index. The aim of this research was to evaluate the same Cone Index alterations caused by an agricultural tractor equipped with both radial tires and bias ply tires, trafficking mobilized soil in four different travel speeds. The experiment was performed in a LATOSSOLO VERMELHO, located 2251' S, 4825'W and 770 m of altitude, in Botucatu-SP, Brazil. The soil mobilization was performed with a chisel plow and a disc arrow. The traction was accomplished with a John Deere tractor, model 6600, with 88 kW of power and 6,723 kg. Equipment requiring a force of 25kN was traced by the tractor draw bar. The experimental design was in randomized blocks with 4 2 factorial arrangements, with two distinct treatments corresponding to the types of tires (bias and radial) and the four travel speeds, with six replications. There were selected the following speeds: 3.5, 3.9, 5.1 and 5.9 km h-1. To determine the soil resistance, there was utilized MSSU - Mobile Soil Sampling Unit, with which the Cone Index was obtained in layers from 0-100, 100-200, 200-300, 300-400, 400-500 and over 500 mm deep. The Cone Index where evaluated in areas with non contact between tire and soil (ICn) and in the tire footprint track (ICp). There were calculated the Cone Index increments caused by the tractor tire (AIC) and the results showed that as the tractor travel speed increased, there were observed decrements in the medium values of cone index. The radial tire provided smaller values of the Cone Index in the superficial layer of the soil (0 to 100 mm) in relation to the bias ply tire, when the speed was approximately 6 km h-1. The increment in the Cone Index, promoted by the tractor, was more intense in the first 200 mm depth, but it also reached the layer from 200 to 300 mm.
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In this work, an analysis of scientific bibliographic productivity was made using the Faculdade de Filosofia, Ciencias e Letras de Ribeirao Preto, Universidade de Sao Paulo (FFCLRP-USP) as example. It is a special Institution in the Brazilian University system which encompasses four important areas of knowledge (fields of concentration) in natural, biological, humanities, and social areas. It is composed by four departments which offer altogether eight undergraduate courses: 1) Psychology, 2) Pedagogy, 3) Chemistry, 4) Biology, 5) Medical Physics, 6) Biomedical Informatics, 7) Sciences of Information and Documentation and 8) Mathematics Applied to Business and six graduate programs leading to M.S. and Ph.D. degrees. Moreover, when analyzing the different courses of FFCLRP, they represent typical academic organization in Brazil and Latin America and could be taken as a model for analyzing other Brazilian research institutions. This analysis was made using: 1) the total number of papers (indexed in Curriculum Lattes database), 2) the number of papers indexed by Thomson ISI Web of Science database, and 3) the Hirsch (h-index). Bibliometric evaluations of undergraduate courses showed a better performance of the courses of Chemistry (P < 0.05), Biology (P < 0.05) and Medical Physics (P < 0.05) when compared to the Pedagogy, Sciences of Information and Documentation (P < 0.05) and Psychology (P < 0.05). We also analyzed the scientific output of the six graduate programs of FFCLRP-USP: 1) Chemistry, 2) Physics Applied to Medicine and Biology, 3) Entomology, 4) Compared Biology, 5) Psychology, 6) Psychobiology. The graduate programs in Psychobiology, Chemistry, Physics Applied to Medicine and Biology, Compared Biology, and Entomology presented very similar results, concerning the assessment of the three indexes. The graduate program in Psychology presented a lower h-index (P < 0.05) and had fewer papers indexed by the ISI (P < 0.05) when compared to the other graduate programs. The worse performance of the psychology program, pedagogy, sciences of information and documentation, psychology courses may be associated to the limited coverage of ISI database and some particular characteristics of this field of concentration.
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The Tanque Grande Reservoir is located at the Serra da Cantereira, Guarulhos (SP), and provides 3% of the municipal drinking water. In the last years, the urban zone has expanded towards the reservoir and has significantly altered the land use. In this work, water samples from three stations were monitored from August/2007 up to July/2008 in terms of the Water Quality Index (IQA) adopted by CETESB. The waters were usually classified in the band Good during the study period. Nevertheless, termotolerants coliforms, BOD and total phosphorus have exceeded the legal limits several times. Such occurrences may be related to the economical activities at the sub-watersheds in addition to changes in the land use of the surroundings of the reservoir.
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The boll weevil (Anthonomus grandis Boheman, 1843) (Coleoptera: Curculionidae) is a pest that limits the production of cotton, especially in the North East of Brazil. The present study aimed to estimate the infestation index and natural mortality of boll weevil at Caraibas County, located in the semi-arid of the Southwest ofBahia. The experiment was performed using the cultivar BSR Aroeira, at Fazenda Lagoa Seca, in 2006. Weekly evaluations were performed, in five sampling areas 25m2, collecting blossoms fallen on the ground. The infestation was estimated by counting the oviposition punctures and /or the feeding on blossoms, and also by the presence of one of the phases of the boll weevil in the inside. Mortality factors were studied through the dissection of blossoms, estimating predation, parasitism, dissection and disease. The results obtained allowed to conclude that the boll weevil determines high infestation levels in the region. Parasitism, dissection and predation, following this order, determine high rates of real mortality of the pest. Catolaccus grandis Burks, 1954 (Hymenoptera: Pteromalidae) and Bracon sp.(Hymenoptera: Braconidae) are parasitoids of boll weevil reported in sothwestern Bahia, being the first one the predominant species. 2009, Sociedad Venezolana de Entomologa.
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Incluye Bibliografa