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Search Results: 1 - 10 of 90641 matches for " Walter José;Costa "
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NONSPECIFIC INFECTIOUS DISEASES IN PREHISTORIC SAN PEDRO DE ATACAMA, NORTHERN CHILE
Tótora da-Gloria,Pedro José; Alves Neves,Walter; Costa Junqueira,Maria Antonietta; Bartolomucci,Rafael;
Chungará (Arica) , 2011, DOI: 10.4067/S0717-73562011000100013
Abstract: the region of san pedro de atacama, northern chile, has undergone several cultural and social changes after humans settled in atacama desert around 500 bc. the atacame?o people experienced the highest degree of social and cultural changes between 400 and 900 ad when they were assimilated into the tiwanaku trade and political web that influenced most of the central-southern andes. under the influence of tiwanaku, san pedro de atacama experienced its greatest economic development. prior analyses of local human skeletal remains have shown a significant increase in the stature of the local population during the same period. in this paper, we investigate the impact of the tiwanaku influence on the local epidemiological profile using the incidence of periostitis and osteomyelitis as indicators of biological stress. surprisingly, the best epidemiological condition occurred during the final phase of influence of tiwanaku (910-960 ad), and not during the apex influence (480-920 ad), as expected by the archaeological context. we suggest that population growth and aggregation may have counteracted the benefits of improved nutrition during the peak tiwanaku influence. a severe drought occurred between 1,100 and 1,400 ad in northern chile. this could also explain the marked increase of bone infections in the post-tiwanaku period (920-1,240 ad).
Contamina??o por cr?mio de águas de rios proveniente de curtumes em Minas Gerais
Jord?o, Cláudio Pereira;Silva, Alessandro Costa da;Pereira, José Luiz;Brune, Walter;
Química Nova , 1999, DOI: 10.1590/S0100-40421999000100010
Abstract: in order to evaluate the chromium contamination from tannery discharges into rivers in the state of minas gerais, samples of water and suspended material were collected and submitted to chemical analysis. the total content of chromium in the samples was measured by flame atomic absorption spectrophotometry. water samples were analysed by standard addition method, while chromium concentration in suspended materials was determined by calibration curves. localities investigated were ipatinga, matias barbosa, dores de campo, ressaquinha, ubá and juiz de fora. samples from a not-industrialized area were also analysed to obtain regional background values. metal inputs were related to effluent discharges into the rivers. suspended material transported cr downriver. chromium concentration in river water exceeded 656 times the value of the brazilian environmental standards, while its concentration in suspended material ranged from 15 to 11066 μg g-1.
Estratégias de identifica??o paramétrica aplicadas à modelagem dinamica de um servidor web Apache
Abreu, Thiago W. M.;Barra Jr., Walter;Barreiros, José A. L.;Costa Junior, Carlos T. da;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2012, DOI: 10.1590/S0103-17592012000100004
Abstract: this article presents an experimental study about parametric identification techniques applied to the modeling of an apache webserver. in order to simulate load variations at the server, an experimental arrangement was developed, which is composed of two personal computers, one used to run the apache server and the other to generate workload by requesting services to the apache. auto-regressive (ar) parametric models were estimated at different operating points and workload conditions. the mean values of the maxclients input (a parameter which is used to set the maximum number of the server's active processes) were used to define the operating points, in order to obtain the apache server cpu utilization (in %) as output. 600 samples were collected at each operating point every 5 seconds. to proceed with the system identification, half of the data set was used for parameter estimation while the other half was used for model validation, at each operating point. a study of the most adequate system order showed that a 7th order model could be satisfactorily used for maxclients low values operating points. however, the results showed that higher order models are needed for maxclients higher values, due to system inherent non-linearities.
Contamina o por cr mio de águas de rios proveniente de curtumes em Minas Gerais
Jord?o Cláudio Pereira,Silva Alessandro Costa da,Pereira José Luiz,Brune Walter
Química Nova , 1999,
Abstract: In order to evaluate the chromium contamination from tannery discharges into rivers in the State of Minas Gerais, samples of water and suspended material were collected and submitted to chemical analysis. The total content of chromium in the samples was measured by flame atomic absorption spectrophotometry. Water samples were analysed by standard addition method, while chromium concentration in suspended materials was determined by calibration curves. Localities investigated were Ipatinga, Matias Barbosa, Dores de Campo, Ressaquinha, Ubá and Juiz de Fora. Samples from a not-industrialized area were also analysed to obtain regional background values. Metal inputs were related to effluent discharges into the rivers. Suspended material transported Cr downriver. Chromium concentration in river water exceeded 656 times the value of the Brazilian Environmental Standards, while its concentration in suspended material ranged from 15 to 11066 μg g-1.
Yield and fruit of papaya ‘sunrise solo’ as function of doses of nitrogen and boron/ Produtividade e qualidade de frutos de mamoeiro ‘sunrise solo’ em fun o de doses de nitrogênio e boro
José Félix Brito,Walter Esfrain Pereira,Lourival Ferreira Cavalcanti,Raunira da Costa Araújo
Semina : Ciências Agrárias , 2011,
Abstract: The study aimed to evaluate the yield and fruit quality of papaya ‘Sunrise Solo’ as function of nitrogen and boron fertilization. The experiment had a randomized block design with four replications, two plants per plot with a single border. To make up the treatments, we used the experimental array Plan Puebla III, which set the rates for nitrogen (0.0 to 111.2 - 200 – 288.9 - 400 g plant-1, and B (0.0 – 0.83 - 1.5 – 2.16 - 3.0 g plant-1), in a total of ten treatments. The addition of nitrogen increased the yield, average fruit weight and number of fruits per plant. The nitrogen and boron increased the diameter and length of the fruit, amount of seeds and content of soluble solids. The pH of the pulp decreased linearly with increasing doses of nitrogen and boron. It was observed a significant effect of N rates on the level of vitamin C. O trabalho teve como objetivo avaliar a produtividade e a qualidade de frutos de mamoeiro ‘Sunrise Solo’ em fun o de doses de nitrogênio e boro. O trabalho foi desenvolvido na fazenda Chan de Jardim no Centro de Ciências Agrárias–UFPB no Município de Areia, em um solo de textura areno-argilosa classificado como Neossolo Regolítico. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repeti es e duas plantas úteis por parcela com bordadura simples. Para a composi o dos tratamentos, utilizou-se a matriz experimental Plan Puebla III, onde se definiram as doses para nitrogênio (0,0 - 111,2 – 200 – 288,9 – 400 g planta-1, e para boro (0,0 - 0,83 - 1,5 - 2,16 - 3,0 g planta-1), totalizando dez tratamentos. A adi o de nitrogênio aumentou a produtividade, o peso médio dos frutos e o número de frutos por planta. As doses de nitrogênio e boro aumentaram o diametro e comprimento do fruto, rendimento de semente e teor de sólidos solúveis totais. O pH da polpa decresceu linearmente com o aumento das doses de N e de boro. Houve efeito significativo das doses de N sobre o teor de vitamina C.
Substratum use fertilizer with potassium in the production of papaya (carica papaya) changes.
José Soares de Lacerda,Walter Esfrain Pereira,Thiago Jardelino Dias,Diógenes de Souza Costa
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: The variation exists in the recommendations of employed materials in the composition of the substrata for production of papaya seedlings and usually, the organic fertilization is associated with the mineral fertilization. In this context, the objective of this work was to evaluate the effect of different substrata composed associated with the potassium fertilization on the growth of Carica papaya seedlings in. The Experiment was lead in the Center of Agrarians Science of the Federal University of Paraíba (UFPB), Areia-PB. The experimental delineation was block-type to perhaps, with three repetitions. The experimental unit was constituted of four bags with capacity for 1 dm3 contends a plant for bag. The collected data had been submitted analyze it of variance and regression, appropriate for experiment with mixtures. It was verified that the increase of the concentration of manure caused greater growth of the crop, while that the sand had the contrary effect. The maximum values of crop growth parameters of papaya had been gotten with 25% of land, 45% of sand, 30% of manure, without addition of KCl.
NONSPECIFIC INFECTIOUS DISEASES IN PREHISTORIC SAN PEDRO DE ATACAMA, NORTHERN CHILE ENFERMEDADES INFECCIOSAS NO-ESPECíFICAS EN POBLACIONES PREHISTóRICAS DE SAN PEDRO DE ATACAMA, NORTE DE CHILE
Pedro José Tótora da-Gloria,Walter Alves Neves,Maria Antonietta Costa Junqueira,Rafael Bartolomucci
Chungará (Arica) - Revista de Antropología Chilena , 2011,
Abstract: The region of San Pedro de Atacama, Northern Chile, has undergone several cultural and social changes after humans settled in Atacama Desert around 500 BC. The Atacame o people experienced the highest degree of social and cultural changes between 400 and 900 AD when they were assimilated into the Tiwanaku trade and political web that influenced most of the Central-Southern Andes. Under the influence of Tiwanaku, San Pedro de Atacama experienced its greatest economic development. Prior analyses of local human skeletal remains have shown a significant increase in the stature of the local population during the same period. In this paper, we investigate the impact of the Tiwanaku influence on the local epidemiological profile using the incidence of periostitis and osteomyelitis as indicators of biological stress. Surprisingly, the best epidemiological condition occurred during the final phase of influence of Tiwanaku (910-960 AD), and not during the apex influence (480-920 AD), as expected by the archaeological context. We suggest that population growth and aggregation may have counteracted the benefits of improved nutrition during the peak Tiwanaku influence. A severe drought occurred between 1,100 and 1,400 AD in Northern Chile. This could also explain the marked increase of bone infections in the post-Tiwanaku period (920-1,240 AD). La región de San Pedro de Atacama, Norte de Chile, experimentó varios cambios culturales y sociales desde los primeros asentamientos humanos alrededor de los 500 a.c., aunque los más altos grados de cambio los sufrieron los atacame os entre 400 y 900 d.C., cuando fueron establecidas conexiones con la red cultural y de intercambio de Tiwanaku, cultura ésta que ejerció influencia sobre la mayor parte de los andes centro-sur. Bajo esta influencia, San Pedro de Atacama tuvo su mayor desarrollo económico. Análisis anteriores de restos esqueletales humanos han mostrado un significativo aumento en la estatura de la población local durante el mismo período. En este trabajo investigamos el impacto de la influencia Tiwanaku en el perfil epidemiológico local, usando la incidencia de periostitis y de osteomielitis como indicadores de estrés biológico. La mejor situación epidemiológica ocurrió durante el final de la fase de influencia de Tiwanaku (910-960 d.C.) y no durante el ápice de esta influencia (480-920 d.C.), como sería de esperar por el contexto arqueológico. Sugerimos que el crecimiento poblacional y la consecuente congregación pudo haber contrarrestado los beneficios de una mejor nutrición durante el auge de la influencia altip
Substrate and phosphorus fertilization on growth of `paluma' guava seedling
José Soares de Lacerda,Walter Esfrain Pereira,José Félix Brito Neto,Diógenes de Souza Costa
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: The guava is a plant originary from tropical region of Americas and although it is a rustic plant it is demanding in nutrients. During the phase of vegetative growth the sequence of requirement of the macronutrients is N, P, K and Ca. This way, an experiment was carried out in order to evaluate the influence of substrate and phosphorus fertilization on the initial growth and mineral composition of `Paluma' guava seedling. It were evaluated 18 substrate, resultants of the combination of soil varying from 0% to 100%, sand from 0% to 100% and manure from 0% to 60%, which were fertilized with three doses of simple superphosphate (0, 6 and 12 g dm-3). The treatments were distributed in randomized block design, with three repetitions and each plot was constituted of two bags containing two seedling. It was evaluated each 30 days the height of the seedling and the stem diameter. At the end of the experiment it was evaluated the shoot and root growth. The substrate consisting of 68% of soil and 32% of manure, with 12 g dm-3 of simple superphosphate, proved to be more efficient for the seedling formation of `Paluma' guave.Keywords: Psidium guajava, mixtures, manure bovine, phosphorus.
Melophagus ovinus e Trypanosoma (Megatrypanum) melophagium em ovinos no Estado de Minas Gerais, Brasil
Costa, José Oswaldo;Lima, Walter dos Santos;Leite, Antonio César Rios;Guimar?es, Marcos Pezzi;Torres, Liléia Diotaiuti;
Memórias do Instituto Oswaldo Cruz , 1983, DOI: 10.1590/S0074-02761983000100012
Abstract: melophagus ovinus is identified for the first time in minas gerais state and trypanosoma (megatrypanum) melophagium in brazil.
Lista preliminar das espécies do gênero Lutzomyia, Fran?a, 1924 (Psychodidae, Phlebotominae) do Estado do Maranh?o, Brasil
Rebêlo, José Manuel Macário;Mendes, Walter Araújo;Costa, Jackson Maurício Lopes;Cavaleiro, Nelson;
Cadernos de Saúde Pública , 1996, DOI: 10.1590/S0102-311X1996000400014
Abstract: this paper presents a preliminary check list of lutzomyia species from maranh?o state. the information derives from data gathered in the scarce literature on the distribution patterns of neotropical phlebotomines. there are 40 species reported in the state. most are amazonian in their distribution, while others come from the savanna domain of central brazil or have a widespread distribution in the neotropics. this can be explained by maranh?o's transitional position between the north, northeast, and central south of the country. of the species of sandflies reported, seven are currently considered vectors for cutaneous and visceral leishmaniases.
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