Double Sampling
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic Absorption Spectrometry (F AAS)
In the present paper, an automated online preconcentration system based on the use of two knotted reactors (KR) was developed for Mn determination in tea samples by flame atomic absorption spectrometry (F AAS). The system automation was performed by using four solenoid valves to switch sample streams and reagents. Valves were driven electronically by an inte
J. Braz. Chem. Soc.. Publicado em: 2020-01
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2. Acidentes de trânsito com condutores de veículos: incidência e diferenciais entre motociclistas e motoristas em estudo de base populacional
RESUMO: Objetivos: Estimar incidências de acidentes de trânsito entre condutores de veículos a motor e verificar diferenciais do evento entre as vítimas motociclistas e motoristas de automóvel. Métodos: Foi conduzido um inquérito domiciliar no município de Jequié, Bahia, em 2013, com 1.406 condutores selecionados por amostragem por conglomerado.
Rev. bras. epidemiol.. Publicado em: 05/12/2019
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3. Sampling Design of Soil Physical Properties in a Conilon Coffee Field
ABSTRACT Establishing the number of samples required to determine values of soil physical properties ultimately results in optimization of labor and allows better representation of such attributes. The objective of this study was to analyze the spatial variability of soil physical properties in a Conilon coffee field and propose a soil sampling method better
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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4. Estimating cyclopoid copepod species richness and geographical distribution (Crustacea) across a large hydrographical basin: comparing between samples from water column (plankton) and macrophyte stands
Species richness and geographical distribution of Cyclopoida freshwater copepods were analyzed along the "La Plata" River basin. Ninety-six samples were taken from 24 sampling sites, twelve sites for zooplankton in open waters and twelve sites for zooplankton within macrophyte stands, including reservoirs and lotic stretches. There were, on average, three sp
Zoologia (Curitiba). Publicado em: 2014-06
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5. DIETA, DINÂMICA POPULACIONAL E ECTOPARASITAS DE PHRYNOPS GEOFFROANUS (SCHWEIGGER, 1812) (TESTUDINATA, CHELIDAE) DO BAIXO SÃO FRANCISCO, POÇO REDONDO, SE. / DIET, AND POPULATION DYNAMICS OF PHRYNOPS GEOFFROANUS ECTOPARASITES (SCHWEIGGER, 1812) (TESTUDINATA, CHELIDAE) THE LOWER SAN FRANCISCO, POÇO REDONDO, SE.
Population of P. geoffroanus of Unidade Unidade de Conservação Estadual Monumento Natural Grota do Angico (MNGA) (3740W; 0939S) was studied in relation of their diet, morphometry, growth rates and mass gain, structure and dynamic population and parasites (leeches). The sampling of specimens was performed in monthly campaigns over a year (between January an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2012
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6. Avaliação de diferentes materiais de cobertura para construção do telhado de aviários móveis
This research aimed to: 1) was to test different materials of cover the roof of aviaries furniture on thermal comfort indices for birds; and 2) was to evaluate the surface temperature and cloacal broiler chickens raised in aviaries furniture, with different covers for the roof. To test different roofing materials for the roof aviaries were built three mobile
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
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7. Avaliação de impacto do programa nacional de crédito fundiário na região sul do Brasil / Impact evaluation of Programa Nacional de Crédito Fundiário in the south region of Brazil
Since it was a colony, Brazil has presented a very concentrated land property structure. From the 30s on, laws and politics have been developed in order to promote an agrarian reform. In the present days, two alternative models of agrarian reform are being applied in Brazil expropriation of non-productive land (traditional model) and acquisition of land by m
Publicado em: 2011
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8. Epibiont occurrence on gastropod shells used by the hermit crab Loxopagurus loxochelis (Anomura: Diogenidae) on the northern coast of São Paulo, Brazil
Gastropod shells occupied by hermit crabs are an important attachment substrate for epifauna, and these shells are often damaged. The present study aimed to characterize the epibionts and extent of damage for gastropod shells occupied by the hermit crab Loxopagurus loxochelis (Moreira, 1901). Samples were collected monthly over a period of one year (from Jul
Zoologia (Curitiba). Publicado em: 2010-04
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9. Resistência à insulina e fatores de risco cardiovasculares associados à obesidade em escolares de Nova Era - MG
Obesity has become a major public health problem, currently being considered by WHO as a global epidemic. This disease, initially limited to adults, has expanded quickly in the pediatric age group. Childhood obesity is a matter of interest as a risk factor associated with increased morbidity and mortality from Cardiovascular Diseases (CVD) and other chronic
Publicado em: 2010
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10. Metais pesados e micronutrientes no solo e em folhas de Brachiaria decumbens às margens de rodovias / Heavy metals and micronutrients in soil and in leaves of Brachiaria decumbens on the margins of highways
The generation of various wastes, has become alarming in light of their growing volume and their disposal to form inappropriate, especially in soil. One of the characteristics of such waste is the possibility of being contaminated by heavy metals. The Fuel obtained the refining of oil, widely used in automobiles, are usually enriched with toxic elements. The
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2009
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11. Desenvolvimento de procedimentos analíticos limpos e com alta sensibilidade para a determinação de espécies de interesse ambiental / Development of clean analytical procedures with high sensitivity for determination of species of environmental interest
Clean analytical procedures with high sensitivity for the determination of species of environmental interest (carbaryl, sulphate and chlorine) were developed. Flow systems with solenoid micropumps were coupled to long optical pathlength spectrophotometry or cloud point extraction procedures, aiming the concentration of species for determination without emplo
Publicado em: 2009
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12. EVALUATION OF DYNAMICS AND DIVERSITY OF A NATURAL PASTURE UNDER DIFFERENT DISTURBANCE / AVALIAÇÃO DA DINÂMICA E DA DIVERSIDADE DE UMA PASTAGEM NATURAL SUBMETIDA A DIFERENTES DISTÚRBIOS
Dynamics of species, families and plant functional types (PFTs), and diversity of a natural grassland submitted or not to burning and grazing, in different relief positions (concave a convex slope) were evaluated. Treatments consisted of the associations of those three factors, in a completely randomized design, with variable number of replicates, from two t
Publicado em: 2009