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au:SILVA, Alexandre Candido da

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Climate drivers afecting upland rice yield in the central region of Brazil
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Heinemann, Alexandre Bryan

; Stone, Luís Fernando

; Silva, Guilherme Custódio Cândido

; Matta, David Henriques da

; Justino, Ludmilla Ferreira

; Silva, Silvando Carlos da

Pesquisa Agropecuária Tropical

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2024, Volume 54 elocation e77222

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A produção de arroz de terras altas está concentrada em uma vasta área do Brasil central. Devido à variabilidade ambiental na região, o desempenho das cultivares varia substancialmente. Objetivou-se determinar as principais variáveis climáticas que afetam a produtividade do arroz de terras altas na região central do Brasil, considerando-se quatro estados: Goiás, Mato Grosso, Tocantins e Rondônia. Utilizou-se um conjunto de dados composto por 177 ensaios, com variedades adaptadas e comumente cultivadas de arroz de terras altas, derivadas do conjunto de dados de melhoramento de arroz da Embrapa. Os ensaios foram conduzidos em blocos casualizados, com três repetições, de 1996 a 2018. A abordagem do modelo aditivo generalizado foi utilizada para ajustar as relações não lineares entre fatores ambientais e produtividade de grãos, tendo sido discriminadas quatro variáveis climáticas: temperatura máxima do ar durante todo o ciclo, temperatura mínima do ar na iniciação da panícula, graus-dia da emergência à iniciação da panícula e graus-dia durante todo o ciclo. O aumento da temperatura máxima do ar e dos graus-dia durante todo o ciclo tende a reduzir a produtividade do arroz, e o aumento da temperatura mínima do ar na iniciação da panícula e dos grausdia da emergência à iniciação da panícula tende a aumentá-la. substancialmente Objetivouse Objetivou se considerandose considerando estados Goiás Grosso Rondônia Utilizouse Utilizou 17 Embrapa casualizados repetições 199 2018 grãos graus dia aumentála. aumentála aumentá la. la aumentá-la 1 19 201 20 2

ABSTRACT The upland rice production is primarily concentrated in a vast area of central Brazil. Given the region’s environmental variability, the performance of rice cultivars can differ signifcantly. This study aimed to identify the key climate factors infuencing the upland rice yield in the central region of Brazil, encompassing four states: Goiás, Mato Grosso, Tocantins and Rondônia. A dataset comprising 177 trials involving commonly cultivated and well-adapted upland rice varieties, derived from the Embrapa’s rice breeding dataset, was analyzed. These trials were conducted in randomized blocks, with three replications, from 1996 to 2018. The generalized additive model approach was employed to adjust the non-linear relationships between environmental factors and grain yield, revealing four climatic variables: maximum air temperature throughout the growth cycle, minimum air temperature at panicle initiation, degree-days from emergence to panicle initiation and degree-days throughout the growth cycle. An increase in the maximum air temperature and degree-days throughout the growth cycle tend to decrease rice yield, while an increase in the minimum air temperature at the panicle initiation and degree-days from emergence to panicle initiation tend to increase it. Brazil regions s variability signifcantly states Goiás Grosso Rondônia 17 welladapted well adapted varieties Embrapas Embrapa analyzed blocks replications 199 2018 nonlinear non linear variables degreedays degree days it 1 19 201 20 2

https://doi.org/10.1590/1983-40632024v5477222

Prevalence of periodontitis in young adults living with HIV/Aids using antiretroviral therapy HIVAids HIV Aids
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SILVA, Alexandre Candido da

; GIOVANI, Élcio Magdalena

RGO - Revista Gaúcha de Odontologia

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2023, Volume 71 elocation e20230017

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O manejo terapêutico, bem como o próprio vírus do HIV tem sido associados à quadros de alterações em nível ósseo, podendo ter uma relação também com os processos alveolares maxilo-mandibulares e potencial desenvolvimento de quadros de doenças periodontais, em especial a periodontite. Objetivo: O objetivo do trabalho foi avaliar a condição da saúde periodontal de indivíduos adultos jovens vivendo com HIV/AIDS, por meio da aferição do Nível de Inserção Clínica Periodontal e levantar dados gerais sobre as condições de saúde frente ao HIV e sobre a qualidade de vida desse público. Os dados foram coletados em um Centro de Referência em IST/AIDS de São Paulo – SP, Brasil. Métodos: O método empregado teve como guia norteadora indicadores previamente validados. No total, foram avaliados 31 indivíduos com idades entre 20 e 24 anos, ambos os gêneros e em uso da terapia antirretroviral. Para as análises foi utilizado o software Excel Microsoft®. Resultados: Foi observado uma prevalência de periodontite no público avaliado de 45,17%. Frente a qualidade de vida o público foi classificado como “Regular” e não foi observado quadros de Periodontite Necrozante, que está fortemente associado a infecção pelo HIV. Conclusão: O público avaliado apresentou alta prevalência de periodontite, o que reforça a importância da Odontologia no acompanhamento das Pessoas Vivendo com HIV/Aids, no sentido de prevenir o agravamento dos quadros de doenças periodontais. terapêutico ósseo maxilomandibulares maxilo mandibulares periodontais Objetivo HIVAIDS AIDS HIV/AIDS ISTAIDS IST SP Brasil Métodos validados total 3 2 anos antirretroviral Microsoft Microsoft® Resultados 4517 45 17 45,17% Regular “Regular Necrozante Conclusão HIVAids Aids HIV/Aids 451 4 1 45,17 45,1 45,

ABSTRACT The therapeutic management, as well as the HIV virus itself, has been associated with alterations at the bone level, which may also have a relationship with the maxillomandibular alveolar processes and potential development of periodontal diseases, especially periodontitis. Objective: The objective of this study was to evaluate the periodontal health condition of young adults living with HIV/AIDS, through the measurement of the Periodontal Clinical Insertion Level (CAL) and to raise general data on the health conditions facing HIV and on the quality of life of this audience. Methods: Data were collected at a Reference Center for STI/AIDS in São Paulo - SP, Brazil. The method used was guided by previously validated indicators. In total, 31 individuals aged between 20 and 24 years, both genders and using TAAP were evaluated. For the analyses, the Excel Microsoft® software was used. Results: There was a prevalence of periodontitis in the assessed public of 45.17%. In view of the quality of life, the public was classified as “Regular” and no cases of Necrozing Periodontitis were observed, which is strongly associated with HIV infection. Conclusions: The evaluated public showed a high prevalence of periodontitis, which reinforces the importance of Dentistry in monitoring People Living with HIV/AIDS, in order to prevent the worsening of periodontal diseases. management itself level diseases Objective HIVAIDS AIDS HIV/AIDS CAL (CAL audience Methods STIAIDS STI SP Brazil indicators total 3 2 years analyses Microsoft Results 4517 45 17 45.17% Regular “Regular observed infection Conclusions 451 4 1 45.17 45.1 45.

https://doi.org/10.1590/1981-86372023001720210151

Base temperature, cycle duration, and thermal constant for yacon culture
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Sales, Ramon Amaro de

; Oliveira, Evandro Chaves de

; Xavier, Alexandre Cândido

; Oliveira, Fábio Luiz de

; Pezzopane, José Eduardo Macedo

; Silva, Diego Mathias Natal da

; Berilli, Sávio da Silva

Acta Scientiarum. Agronomy

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2022, Volume 44 elocation e52623

Abstract: En | Text: En | PDF: En

ABSTRACT. Yacon is a perennial herbaceous plant that naturally occurs in South America at altitudes ranging from 2,000 m to 3,100 m above sea level. The yacon culture has recently grown in popularity as it has high productive potential in mild climates and multiple benefits to human health. This study aimed to determine the lower and upper base temperatures, cycle duration, and thermal constant for the yacon culture, based on phenological data from field experiments that were carried out during three growing seasons (fall, winter, and spring) in 2013. The experiments were conducted in the municipality of Ibatiba in the state of Espírito Santo, Brazil, in a randomized block design with four replicates. The lower base temperature was determined using methods of the lowest standard deviation in days and degree-days, relative development, and variation coefficient in degree-days for two subperiods: emergence to maturation, and onset of tuberization to maturation. The upper base temperature was determined by the standard deviation and coefficient of variation methods, both in degrees-days. The relationship between meteorological elements and the onset of tuberization was also investigated. The lower base temperature values determined for yacon were 12.5ºC in the two subperiods studied with a base temperature above 34.0ºC. The productivity of these tuberous roots was higher in the fall because of the longer cycle, lower temperature, and lower photoperiod. In turn, a higher thermal sum was needed to initiate tuberization with the delay of planting.

https://doi.org/10.4025/actasciagron.v44i1.52623

Importance of the dentist and the auxiliary oral health team in the diagnosis of syphilis
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Cândido da Silva, Alexandre

; Correia dos Santos, Camila

; Taquínio Marinho, Kelly Cristine

; Cândido Pollo, Isabela

; Giovani, Élcio Magdalena

Revista Cubana de Estomatología

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mar 2020, Volume 57 N. 1 elocation e2171

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: Syphilis is classified as a sexually transmitted infectious-contagious disease with the causative agent Treponema pallidum (Tp). It presents distinct stages of evolution: The primary phase is characterized by the appearance of the hard chancre, the secondary phase by the spread of Tp through the bloodstream and systemic involvement, and the tertiary phase by organ infection and nervous system impairment. In congenital syphilis, the Tp is transmitted vertically from mother to child. Objective: Report a case in which the dental team participated in the diagnosis of syphilis. Case presentation: A male 26-year-old patient with leukoderma, HIV-positive and under regular antiretroviral treatment, with no other chronic systemic changes and no previous history of Tp infection, was referred for evaluation by the oral health team. The patient reported having had bisexual relations in recent months with a condom and orogenital contact without a condom. He had not noticed any type of "wound" on the body. Intraoral examination found multiple reddish macules scattered on the lingual dorsum, with a slight detachment and little pain. The quick test was a reagent for syphilis. The patient was referred for evaluation at the medical clinic. Treatment started by two applications of benzyl penicillin with a 7 days' separation between them. Complementary blood tests were also indicated, with special attention to VDRL, which eventually confirmed the Tp infection. Conclusions: Participation of the oral health team in the diagnosis of syphilis constitutes a complementary force for the improvement of health care processes.

RESUMEN Introducción: La sífilis se clasifica como una enfermedad contagiosa infecciosa de transmisión sexual, con el agente causal Treponema pallidum (Tp). Presenta distintos estadios de evolución: la fase primaria caracterizada por la aparición del chancre duro; la fase secundaria, la diseminación de la Tp a través del torrente sanguíneo y la afectación sistémica; y la fase terciaria, en que hay infección de órganos y deterioro del sistema nervioso, además de sífilis congénita, forma esta en la que Tp es transmitida verticalmente por la mujer embarazada. Objetivo: Informar sobre un caso en el que la participación del equipo dental colaboró en el proceso de diagnóstico de la sífilis. Presentación del caso: Paciente con 26 años de edad, leucodermia, VIH positivo y en tratamiento antirretroviral regular, sin otros cambios crónicos a nivel sistémico y sin antecedentes de infección por Tp. Se remitió para evaluación con el equipo de salud oral. Informó haber tenido relaciones bisexuales en los últimos meses con un condón y contacto orogenital sin condón. No notó ningún tipo de "herida" en el cuerpo. En el examen intrabucal, se encontraron múltiples máculas rojizas dispersas en el dorso lingual, con un ligero desprendimiento y con poco dolor. La prueba rápida fue un reactivo para sífilis. El paciente fue remitido para su evaluación a clínica médica. Comenzó el tratamiento con dos aplicaciones de penicilina bencilo, con un intervalo de 7 días y se solicitó análisis de sangre complementarios, con especial atención al VDRL, que posteriormente confirmó la infección por Tp. Conclusiones: La participación del equipo de salud bucal frente al diagnóstico de la sífilis, se constituye como una fuerza complementaria para la mejora de los procesos en salud.

Brazilian recommendations on the safety and effectiveness of the yellow fever vaccination in patients with chronic immune-mediated inflammatory diseases
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Pileggi, Gecilmara Salviato

; Mota, Licia Maria Henrique Da

; Kakehasi, Adriana Maria

; Souza, Alexandre Wagner De

; Rocha, Aline

; Melo, Ana Karla Guedes de

; Fonte, Caroline Araujo M. da

; Bortoletto, Cecilia

; Brenol, Claiton Viegas

; Marques, Claudia Diniz Lopes

; Zaltman, Cyrla

; Borba, Eduardo Ferreira

; Reis, Enio Ribeiro

; Freire, Eutilia Andrade Medeiros

; Klumb, Evandro Mendes

; Christopoulos, Georges Basile

; Laurindo, Ieda Maria M.

; Ballalai, Isabella

; Costa, Izaias Pereira Da

; Michelin, Lessandra

; Valadares, Lilian David de Azevêdo

; Chebli, Liliana Andrade

; Lacerda, Marcus

; Toscano, Maria Amazile Ferreira

; Yazbek, Michel Alexandre

; Vieira, Rejane Maria R. De Abreu

; Magalhães, Renata

; Kfouri, Renato

; Richtmann, Rosana

; Merenlender, Selma Da Costa Silva

; Valim, Valeria

; Assis, Marcos Renato De

; Kowalski, Sergio Candido

; Trevisani, Virginia Fernandes Moça

Advances in Rheumatology

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2019, Volume 59 elocation 17

Abstract: En | Text: En | PDF: En

Abstract Background: In Brazil, we are facing an alarming epidemic scenario of Yellow fever (YF), which is reaching the most populous areas of the country in unvaccinated people. Vaccination is the only effective tool to prevent YF. In special situations, such as patients with chronic immune-mediated inflammatory diseases (CIMID), undergoing immunosuppressive therapy, as a higher risk of severe adverse events may occur, assessment of the risk-benefit ratio of the yellow fever vaccine (YFV) should be performed on an individual level. Main body of the abstract: Faced with the scarcity of specific orientation on YFV for this special group of patients, the Brazilian Rheumatology Society (BRS) endorsed a project aiming the development of individualized YFV recommendations for patients with CIMID, guided by questions addressed by both medical professionals and patients, followed an internationally validated methodology (GIN-McMaster Guideline Development). Firstly, a systematic review was carried out and an expert panel formed to take part of the decision process, comprising BRS clinical practitioners, as well as individuals from the Brazilian Dermatology Society (BDS), Brazilian Inflammatory Bowel Diseases Study Group (GEDIIB), and specialists on infectious diseases and vaccination (from Tropical Medicine, Infectious Diseases and Immunizations National Societies); in addition, two representatives of patient groups were included as members of the panel. When the quality of the evidence was low or there was a lack of evidence to determine the recommendations, the decisions were based on the expert opinion panel and a Delphi approach was performed. A recommendation was accepted upon achieving ≥80% agreement among the panel, including the patient representatives. As a result, eight recommendations were developed regarding the safety of YFV in patients with CIMID, considering the immunosuppression degree conferred by the treatment used. It was not possible to establish recommendations on the effectiveness of YFV in these patients as there is no consistent evidence to support these recommendations. Conclusion: This paper approaches a real need, assessed by clinicians and patient care groups, to address specific questions on the management of YFV in patients with CIMID living or traveling to YF endemic areas, involving specialists from many areas together with patients, and might have global applicability, contributing to and supporting vaccination practices. We recommended a shared decision-making approach on taking or not the YFV.

https://doi.org/10.1186/s42358-019-0056-x 1111 downloads

Occupational accidents related to cattle slaughter in Mato Grosso, Brazil
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Silva, Ageo Mario Cândido da

; Ultramari, Alexandre Volkman

; Pginati, Walderley Antonio

; Moi, Gisele Pedroso

Cadernos Saúde Coletiva

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mar 2016, Volume 24 N. 1 Pages 9 - 13

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Abstract Introduction Cattle rising in the southern Amazon have grown rapidly, being Mato Grosso one of the top states in meat production. This growth led to the hiring of more workers to the chilling activity, increasing the number of workplace accidents in this sector. Objective To analyze the influence of slaughter cattle on occupational accidents and their spatial distribution in the state of Mato Grosso, Brazil. Methods This is the first ecological study investigating the global spatial autocorrelation of the occupational accident rate and the number of slaughtered cattle in Mato Grosso municipalities; this study used the statistic Moran “global” by LISA method and subsequently held a spatial linear regression, with cattle slaughter exposure variables and as an outcome it showed the rate of workplace accidents. Results The study showed a global spatial pattern of number of cattle slaughtered. Statistically significant correlations were observed, in multiple regression analysis, between the number of cattle slaughtered and rate of occupational accidents. Conclusion The cattle slaughter is related to the increase of industrial accidents in the State of Mato Grosso, Brazil.

Resumo Introdução A criação de gado no sul da Amazônia tem crescido rapidamente, sendo que o Mato Grosso é um dos primeiros estados na produção de carne. Esse crescimento permitiu a contratação de mais trabalhadores para a atividade de refrigeração, trazendo um aumento de acidentes de trabalho nesse setor. Objetivo Analisar a influência de abate de gado nos acidentes de trabalho e sua distribuição espacial no estado de Mato Grosso, Brasil. Métodos Estudo ecológico que investigou a autocorrelação espacial global das taxas de acidentes de trabalho e o número de bovinos abatidos em municípios de Mato Grosso, usando a estatística Moran “global” pelo método LISA e, posteriormente, uma regressão múltipla espacial, tendo como variáveis de exposição o abate de cabeças de gado e, como variável resposta, a taxa de acidentes de trabalho. Resultados Foram encontrados padrões espaciais globais na distribuição do número de cabeças de gado abatidas. Na regressão múltipla, foram observadas correlações estatisticamente significantes entre o número de bovinos abatidos e a taxa de acidentes de trabalho. Conclusão O abate de gado está relacionado ao aumento do número de acidentes de trabalho no Estado de Mato Grosso, Brasil.

https://doi.org/10.1590/1414-462X201500040138 2331 downloads

Fuzzy Classification in the Determination of Input Application Zones
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Lima, Julião Soares de Souza

; Costa, Felipe Pianna

; Xavier, Alexandre Cândido

; Silva, Samuel de Assis

Revista Brasileira de Ciência do Solo

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2016, Volume 40 elocation e0150104

Abstract: En | Text: En | PDF: En

ABSTRACT Correctly interpreting soil fertility and its spatial distribution within an area helps to lessen losses and environmental effects associated with agriculture, to optimize fertilization and liming practices. This study is aimed at using concepts and methods from spatial and temporal analyses to soil fertility and to develop a fuzzy classification methodology in an effort to define input application zones in three conilon coffee harvests. An irregular network with georeferenced points was built in the central region of the farm. Soil samples were collected at 0.00-0.20 m depth within the projections of tree canopies. Geostatistical analysis was used to set up maps in which the variables were shown. In such maps, input and output fuzzy sets were created and applied, as well as rules of inference and determination of to-be-applied logical operators. Fuzzy classification of the area was performed in the three harvests so as to define whether or not inputs were needed. Our main findings show that the N-P-K requirement was spatially dependent in all harvests. By classifying the area using fuzzy logic, it was possible to analyze soil fertility and to indicate the regions having the smallest and greatest needs for N-P-K and liming.

https://doi.org/10.1590/18069657rbcs20150104 2898 downloads

Método para a espacialização dos elementos do balanço hídrico climatológico
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Cecílio, Roberto Avelino

; Silva, Kennedy Ribeiro da

; Xavier, Alexandre Cândido

; Pezzopane, José Ricardo Macedo

Pesquisa Agropecuária Brasileira

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apr 2012, Volume 47 N. 4 Pages 478 - 488

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo deste trabalho foi desenvolver e avaliar um método de espacialização dos elementos do balanço hídrico climatológico (BHC). O método utiliza modelos digitais do terreno que contêm a distribuição espacial dos elementos climáticos de entrada do BHC. A avaliação foi feita com dados reais de BHC referentes a 110 estações pluviométricas do Estado do Espírito Santo. Comparou-se o desempenho do método proposto com o dos seguintes interpoladores espaciais: krigagem e inverso de uma potência da distância. O método proposto apresentou melhores estimativas espaciais de todos os elementos do balanço hídrico - evapotranspiração real, excedente, deficiência e disponibilidade hídrica.

The objective of this work was to develop and evaluate a method for the spatial distribution of the climatic water balance (CWB) elements. The method applies terrain digital models containing the spatial distribution of climate elements used as input data of CWB. Evaluation was made with existing CWB data from 110 pluviometric stations of Espírito Santo state, Brazil. The proposed method's performance was compared to the one of the following spatial interpolators: kriging and inverse distance weighting. The proposed method presented best predictions of the spatial distribution of all CWB elements - actual evapotranspiration, water deficit, water surplus and water availability.

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Interpolação Espacial da Precipitação no Estado do Espírito Santo
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Silva, Kennedy Ribeiro da

; Cecílio, Roberto Avelino

; Xavier, Alexandre Cândido

; Pezzopane, José Ricardo Macedo

; Garcia, Giovanni de Oliveira

Floresta e Ambiente

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dec 2011, Volume 18 N. 4 Pages 417 - 427

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O conhecimento da variabilidade espacial da precipitação é importante em diversos ramos das ciências agrárias e ambientais, como, por exemplo, na produção das culturas, no manejo dos recursos hídricos, na avaliação ambiental e em estudos de erosão hídrica. O presente estudo teve como objetivo avaliar dois métodos de interpolação para a espacialização da precipitação mensal no Estado do Espírito Santo. Utilizaram-se dados de precipitação mensal, compreendidos no período de 1977 a 2006, de 110 postos pluviométricos, sendo 94 do Espírito Santo e 16 de Estados vizinhos. Avaliaram-se os métodos de interpolação Inverso da Potência da Distância (IPD), considerando-se as potências de 2 até 6 e a Krigagem (KR), modelos exponencial, esférico e linear, por meio da validação cruzada. A avaliação e a seleção do melhor método foram feitas a partir de índices estatísticos (índice de confiança, coeficiente de eficiência ajustado e erro médio percentual). Os resultados mostram que o método de KR é mais eficiente para a interpolação espacial da precipitação mensal no Espírito Santo, em comparação ao método IPD, e apresenta erros médios percentuais entre 7,9 e 14,6%. ambientais exemplo culturas hídricos hídrica Utilizaramse Utilizaram se 197 2006 11 pluviométricos 9 1 vizinhos Avaliaramse Avaliaram IPD , (IPD) considerandose considerando KR, (KR) exponencial linear cruzada índice confiança percentual. percentual . percentual) 79 7 7, 146 14 14,6% 19 200 (IPD (KR 14,6 20 14,

ABSTRACT The knowledge of spatial variability of rainfall is important in many agricultural and environmental sciences applications, such as crop production, water resources management, environmental management, and soil erosion studies. The purpose of this study was to evaluated two spatial interpolation methods applied to monthly rainfall in the State Espirito Santo, Brazil. Thirty years of monthly rainfall data (1997-2006) from 110 rain gauge stations, 94 stations in the State of Esprito Santo and 16 stations in the neighboring states, were used. The spatial interpolation methods ‘Inverse Distance to a Power’ (IPD), considering power from 2 to 6, and ‘Kriging’ (KR), exponential, spherical and linear models, were evaluated through the use of cross validation. The evaluation and selection of the best spatial interpolation methods was done by analyzing the statistical indexes (trusty index, adjusted efficiency coefficient and mean percent error). Results showed that KR method had better performance than IPD method concerning spatial interpolation of monthly rainfall in the State of Espirito Santo, presenting mean percent errors varying from 7.9 to 14.6%. applications production management studies Brazil 19972006 1997 2006 (1997-2006 11 9 1 states used Inverse Power IPD, , (IPD) 6 ‘Kriging Kriging KR, (KR) exponential models validation trusty index error. error . error) 79 7 7. 146 14 14.6% 1997200 199 200 (1997-200 (IPD (KR 14.6 199720 19 20 (1997-20 14. 19972 (1997-2 (1997- (1997 (199 (19 (1 (

https://doi.org/10.4322/floram.2011.061

10.

Efeito da familiarização na estabilização dos valores de 1RM para homens e mulheres
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Silva-Batista, Carla

; Tricoli, Valmor

; Laurentino, Gilberto Candido

; Batista, Mauro Alexandre Benites

; Okuno, Nilo Massaru

; Ugrinowitsch, Carlos

Motriz: Revista de Educação Física

Journal Metrics
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dec 2011, Volume 17 N. 4 Pages 610 - 617

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo deste estudo foi verificar o número de sessões de familiarização necessárias para estabilização da carga do teste de uma repetição máxima (1RM) no exercício agachamento em homens e mulheres. Oito homens (25 ± 4 anos) e oito mulheres (20 ± 1anos) foram submetidos a cinco sessões experimentais. ANOVA e plotagem de Bland-Altman foram utilizadas para comparar a carga de 1RM entre as sessões (p<0,05). A estabilização da carga ocorreu na quarta sessão para os homens e na terceira para as mulheres, com aumentos significantes da força absoluta e relativa da primeira à quarta (17kg e 19%) e da primeira à terceira (9kg e 14%) sessões, respectivamente. Porém, não houve diferença significante na força relativa entre os gêneros. De acordo com nossos resultados, indivíduos inexperientes em treinamento de força atingem alta reprodutibilidade ao teste de 1RM no exercício agachamento, após realizar três a quatro sessões de familiarização.

The purpose of this study was to determine the number of familiarization sessions for stabilizing the load of one repetition maximum (1RM) tests on the squat exercise in men and women. Eight men (25 ± 4 years) and eight women (20 ± 1 years) underwent five experimental sessions. ANOVA and Bland-Altman plotting were used to compare the 1RM load between the sessions (p<0.05). The stabilization of load occurred at the fourth session for men and at the third session for women, with significantly increased in relative and absolute strength from the first to the fourth (17kg and 19%) and from the first to the third (9kg and 14%) session, respectively. However, relative strength did not differ significantly between genders. According to our results, individuals not experienced with strength training can reach high reliability in the 1RM test in the squat exercise, after performing three or four familiarizations sessions.

3392 downloads

11.

É o mercado míope em relação à política fiscal Brasileira?
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Silva, Alexandre Manoel Angelo da

; Cândido Júnior, José Oswaldo

Revista Brasileira de Economia

Journal Metrics
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dec 2010, Volume 64 N. 4 Pages 439 - 462

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Neste artigo, nós avaliamos a relação entre as expectativas da política fiscal e a consistência da política fiscal, que é denotada por algumas variáveis de contabilidade pública. Nosso principal propósito é investigar se as expectativas da política fiscal são influenciadas pela consistência da política fiscal. A análise empírica desenvolvida, que é baseada em dados mensais brasileiros para o período 2003-2006, sugere que as expectativas não são afetadas pela consistência da política fiscal.

On this paper, we evaluate the relationship among expectations of fiscal policy and fiscal policy consistency, which is denoted by some public account variables. Our main proposal is to investigate if the expectations are affected by fiscal policy consistency. The empirical analysis, based on Brazilian monthly data for the period of 2003-2006, suggests that the expectations have not been affected by fiscal policy consistency.

3424 downloads

12.

Lógica fuzzy na avaliação da fertilidade do solo e produtividade do café conilon
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Silva, Samuel de Assis

; Lima, Julião Soares de Souza

; Souza, Gustavo Soares de

; Oliveira, Rone Batista de

; Xavier, Alexandre Cândido

Revista Ciência Agronômica

Journal Metrics
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mar 2010, Volume 41 N. 1 Pages 9 - 17

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O objetivo deste estudo foi analisar, utilizando a geoestatística e o sistema de classificação fuzzy, a fertilidade de uma área experimental com base em atributos químicos do solo e sua relação com a produtividade do café conilon. O estudo foi realizado na fazenda experimental do INCAPER-ES. As amostras de solo foram coletadas na profundidade de 0 - 0,2 m, sendo analisados os atributos: fósforo, potássio, cálcio e magnésio, alumínio, soma de bases, capacidade de troca catiônica a pH 7 e saturação por bases. Os dados foram submetidos a uma análise descritiva, exploratória e à analise geoestatística. Utilizou-se um sistema de classificação fuzzy utilizando os atributos descritos para inferir sobre a fertilidade do solo e sua relação com a produtividade da cultura. A possibilidade de fertilidade apresentou relação espacial positiva com a produtividade da cultura, com valores mais elevados desta onde a possibilidade de solo fértil é superior.

Abstract The objective of this study was to analyze, using the geoestatistic and a system of classification fuzzy, the fertility of an experimental area with base in chemical attributes of the soil and its relationship with the productivity of the conilon coffee. The study was accomplished in the experimental farm of the INCAPER - ES. The soil samples were collected in the depth of 0 - 0.2 m, being analyzed the attributes: matches, potassium, calcium and magnesium, aluminum, sum of bases, cation exchange capacity (pH 7), and saturation percentage. The data were submitted to a descriptive, exploratory, and geostatistical analysis. A system of fuzzy classification was applied using the attributes described to infer about the fertility of the soil and its relationship with the productivity of the culture. The fertility possibility presented positive spatial relationship with the productivity of the culture, with higher values of this where the possibility of fertile soil is superior.

https://doi.org/10.5935/1806-6690.20100002 998 downloads

13.

Variabilidade espacial de atributos químicos de um Latossolo Vermelho-Amarelo húmico cultivado com café
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Silva, Samuel de Assis

; Lima, Julião Soares de Souza

; Xavier, Alexandre Cândido

; Teixeira, Mauri Martins

Revista Brasileira de Ciência do Solo

Journal Metrics
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feb 2010, Volume 34 N. 1 Pages 15 - 22

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo do presente estudo foi analisar a variabilidade espacial de atributos químicos de um Latossolo Vermelho-Amarelo húmico. O estudo foi realizado em uma área cultivada com Coffea arabica L. variedade Catuaí. As amostras de solo foram coletadas na profundidade de 0-20 cm, distribuídas em uma malha amostral, com 50 pontos. Os atributos químicos estudados foram: P, Na e S disponíveis, Ca, Mg e Al trocáveis, pH, H + Al, SB, t, T, V, m, MO, ISNa, P-remanescente e micronutrientes (Zn, Fe, Mn, Cu e B). Os dados foram analisados por meio da análise da estatística descritiva, seguida de uma análise de componentes principais com posterior análise de agrupamento. A geoestatística foi utilizada para verificar a existência e quantificar o grau de dependência espacial dos componentes principais. O método de análise multivariada com base nos componentes principais forneceu componentes interpretáveis, sendo o primeiro relacionado com a acidez e o segundo com o teor de matéria orgânica do solo. As técnicas de análise multivariada, em associação com a geoestatística, facilitaram a avaliação da variabilidade do solo; os componentes principais 1 e 2 apresentaram dependência espacial moderada, com maior continuidade espacial observada para o componente 1, o que permitiu melhor caracterização da acidez do solo. O solo em estudo apresentou, ao longo da encosta, disponibilidade reduzida de nutrientes, considerável acidez, menores teores de matéria orgânica na porção central da área e valores elevados de Al trocável na porção superior desta.

The objective of this study was to analyze the spatial variability of chemical attributes of an Oxisol. The experiment was conducted with Coffea arabica L., variety Catuai, at a depth of 0-0.2 m in a grid area totaling 50 points. The studied chemical attributes were: P, K, Ca, Mg, Na, S, Al, pH, H + Al, SB, t, T, V, m, MO, ISNa, equilibrium P and micronutrients (Zn, Fe, Mn, Cu, and B). The data were analyzed by descriptive statistical analysis, followed by principal component with subsequent cluster analysis. The existence of spatial dependence was verified and the degree quantified using the principal components and geostatistics. The method of multivariate analysis based on principal components provided interpretable components; the first were correlated with acidity and the second with soil organic matter. Techniques of multivariate analysis, in combination with geostatistics, facilitated the evaluation of soil variability. The principal components 1 and 2 indicated moderate spatial dependence, with greater spatial continuity in component 1, which allowed a better characterization of soil acidity. Reduced availability of soil nutrients and considerable acidity were observed along the slope, lower levels of organic matter in the center of the area and high Al contents in the upper part.

4539 downloads Cited 13 times in SciELO

14.

Distribuição e incerteza da acidez de um latossolo vermelho-amarelo húmico sob cultivo de café
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Silva, Samuel de Assis

; Lima, Julião Soares de Souza

; Souza, Gustavo Soares de

; Xavier, Alexandre Candido

Revista Brasileira de Ciência do Solo

Journal Metrics
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aug 2009, Volume 33 N. 4 Pages 1053 - 1060

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Com o desenvolvimento da agricultura, a utilização de novas alternativas na avaliação das propriedades que influenciam o rendimento das plantas tornou-se indispensável para melhor manejar o sistema agrícola. O objetivo deste trabalho foi utilizar uma ponderação por meio da modelagem fuzzy para estudar, com base em atributos químicos do solo, a propagação de incertezas da acidez de um Latossolo Vermelho-Amarelo húmico cultivado com café arábica. As amostragens de solo foram realizadas na profundidade de 0-20 cm, em uma malha totalizando 50 pontos. Os atributos avaliados foram: pH em H2O, acidez trocável (Al3+), acidez potencial (H + Al) e saturação por Al (m). Os dados foram analisados pela estatística descritiva e pela geoestatística. Utilizou-se um sistema de classificação fuzzy e os atributos descritos para inferir sobre a acidez do solo. A lógica fuzzy, pelo algoritmo utilizado, teve um bom desempenho na caracterização e no mapeamento das incertezas da acidez do solo em questão.

With the development of agriculture, the use of new tools for the evaluation of the properties related to plant yields have become essential to improve the management of agricultural systems. The purpose of this study was to use a fuzzy model to investigate, based on soil chemical properties, the propagation of uncertainty of the acidity of a humic Red-Yellow Latosol (Oxisol) under Arabic coffee plantation. The soil was sampled at a depth of 0 - 0.2 m, in a grid, totaling 50 sampling points. The following attributes were determined: pH in H2O, exchangeable acidity (Al3+), potential acidity (H + Al) and Al saturation (m). The data were analyzed by descriptive statistics and geostatistics. A fuzzy classification system was used based on the attributes described to infer on the soil acidity. Fuzzy logic, with the algorithm used, was efficient to characterize and map the uncertainties of acidity of the soil under study.

2426 downloads

15.

AVALIAÇÃO DE MODELOS DE AFILAMENTO NÃO-SEGMENTADOS NA ESTIMAÇÃO DA ALTURA E VOLUME COMERCIAL DE Eucalyptus sp.
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Souza, Carlos Alberto Martinelli de

; Silva, Gilson Fernandes da

; Xavier, Alexandre Cândido

; Mendonça, Adriano Ribeiro de

; Almeida, André Quintão de

Ciência Florestal

Journal Metrics
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sep 2008, Volume 18 N. 3 Pages 387 - 399

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Este trabalho teve como objetivo avaliar diferentes modelos de afilamento na estimativa da altura comercial, volume comercial e volumes ao longo do fuste de Eucalyptus sp. para a obtenção de multiprodutos. Com base em dados de cubagem rigorosa de árvores-amostras com idade de 16 anos, foram avaliados os modelos de afilamento de Demaerschalk (1972), Ormerod (1973), Schöepfer (1966), Hradetzky (1976), Garay (1979) e Biging (1984). Baseado na análise gráfica dos resíduos e nas estatísticas bias (B), média das diferenças (MD) e desvio-padrão das diferenças (DPD), verificou-se que, para estimativa da altura comercial e do volume comercial os modelos de Biging, Schöepfer e Hradetzky apresentaram os melhores resultados, acompanhados do modelo de Garay que apresentou melhora considerável para o volume comercial. De forma geral, nas condições estudadas, o modelo de Biging apresentou maior estabilidade na estimativa dos volumes ao longo do fuste.

ABSTRACT This work aimed to evaluate different taper models in the estimate of the merchantable height and volume and along the bole volumes of Eucalyptus sp., to the obtention of multiproducts. Considering the data of rigorous scaling of trees of Eucalyptus sp. with 16 years-old, it was appraised the models of taper of Demaerschalk (1972), Ormerod (1973), Schöepfer (1966), Hradetzky (1976), Garay (1979) and Biging (1984). Based on graphical analysis of the residues and on the statistics bias (B), average of the differences (MD) and deviation pattern of the differences (DPD), it could be verified that, in the estimate of the merchantable height and volume of the models, Biging, Schöepfer and Hradetzky presented the best results, followed by the models of Garay, which have also shown good results. In general, considering the treatment of the volumes of the logs, the Biging model presented the best resuts.

https://doi.org/10.5902/19805098450 447 downloads

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