10 documents found, page 1 of 1
Spatial-temporal of fire foci in the state of Rio de Janeiro, Brazil
Gois, Givanildo de; Freitas, Welington Kiffer de; Oliveira Júnior, José Francisco deThis study evaluated the space-time variability of fire foci via environmental satellites for the State of Rio de Janeiro (SRJ) based on statistical procedures. The fire foci in the period of 2000 to 2015 were obtained from the BDQueimadas fire database. Descriptive, exploratory, and multivariate statistical analyses were performed in the software environment R i386 version 3.2.5. The north region had 6760 foci...
Poincianella pluviosa as biomonitor of heavy metals in the municipality of Volt...
Souza, Marcelle S.P.A. de; dos Santos, Fabiana Soares; Magalhães, Luís Mauro Sampaio; Freitas, Welington Kiffer de; Gois, Givanildo deThe present study aimed to determine heavy metal concentrations in the tree bark of the species Poincianella pluviosa in Volta Redonda municipality, Rio de Janeiro. Four sets of barks of eight trees with three replicates each from sectors 1 (W), 2 (S), 3 (E), and 4 (N) of the Volta Redonda center corresponding to the cardinal points were collected. The samples were digested in a nitroperchloric mixture and the ...
Cluster analysis identified rainfall homogeneous regions in Tocantins state, Br...
Oliveira-Júnior, José Francisco de; Xavier, Fábio Miranda Gomes; Teodoro, Paulo Eduardo; Gois, Givanildo de; Delgado, Rafael CollIdentifying homogeneous regions regarding the monthly rainfall is relevant in agricultural planning, especially in relation to the installation of crops. Thus, the aim of this study was to apply the cluster analysis using Ward's algorithm to identify homogeneous regions in Tocantins State. Rainfall database of 34 stations (sites) of Tocantins, from 1976 to 2012, it were obtained of the Database of the Agência N...
Probable monthly rainfall associated with distinct biomes of Mato Grosso do Sul...
Teodoro, Paulo Eduardo; Silva Junior, Carlos Antonio da; Oliveira-Junior, José Francisco; Delgado, Rafael Coll; Gois, Givanildo deThe aim of this study was to determine the probable monthly rainfall for the state of Mato Grosso do Sul, considering the level of 75% probability, and study the spatial distribution associated with its different biomes. The rainfall data of 32 stations (sites) in the state of Mato Grosso do Sul were collected in the period 1954-2013. In each of the 384 series, the average monthly rainfall was calculated, for a...
Carbon monoxide trend in the city of Rio de Janeiro via mann-kendall and cusum ...
Gois, Givanildo de; Oliveira-Junior, José Francisco de; da Silva, Elania Barros; Motta Maia, Juliana Lúcio; Aleluia, Indira Sueline SilvaHourly mean concentrations of carbon monoxide trend (CO) in the city of Rio de Janeiro (CRJ) was evaluated based on statistical tests. Air quality stations used were: Central, Copacabana, São Cristóvão and Tijuca from 2010 to 2014. The results of the CO trend based on the Mann-Kendall (MK) test showed an inverse correlation with time, with significant decrease in all seasons. Significant increase trend (Z > ...
Cat?strofes naturais no estado do Rio de Janeiro baseado em dados clim?ticos e ...
Gois, Givanildo deSubmitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-08-16T19:52:28Z No. of bitstreams: 1 2017 - Givanildo de Gois.pdf: 10268407 bytes, checksum: 6b0d9ed5afee22baa701ac9aa599b1e9 (MD5); Made available in DSpace on 2017-08-16T19:52:28Z (GMT). No. of bitstreams: 1 2017 - Givanildo de Gois.pdf: 10268407 bytes, checksum: 6b0d9ed5afee22baa701ac9aa599b1e9 (MD5) Previous issue date: 2017-02-22; CAPES - Coordena??o...
Models to estimate incident solar radiation on Seropédica, Rio de Janeiro
Gois, Givanildo de; Souza, Jessica Cristina Santos; Oliveira-Júnior, José Francisco de; Delgado, Rafael Coll; Lyra, Gustavo BastosIncident solar radiation (Rs) is usually used as an input variable in growth simulation models and yield of agricultural crops, in the design of alternative energy systems, buildings desing, weather, irrigation projects and food preservation, among others. However, in Brazil, there are few studies that evaluated the performance of different models in estimating Rs. Therefore, the aim of the study is to evaluate...
Validation of the net radiation through sebal algorithm in different classes of...
Lisboa, Henos Carlos Knupler Jordão; Magistrali, Iris Cristiane; Delgado, Rafael Coll; Oliveira-Junior, José Francisco de; Gois, Givanildo deThe aim of this study was (a) to assess and evaluate the net radiation (Rn) by SEBAL algorithm and (b) to assess the net radiation (Rn) by the landscape's spatial temporal dynamic using ISODATA algorithm, in entire city of Rio de Janeiro. Has been calculated the Rn by using the TM sensor images and orbital platform Landsat 5 and by Penman-Monteith method (FAO 56) with the conventional meteorological station dat...
EVI2 index trend applied to the vegetation of the state of Rio de Janeiro based...
Gois, Givanildo de; Delgado, Rafael Coll; Oliveira-Junior, José Francisco; Souza, Thais Cristina de Oliveira; Teodoro, Paulo EduardoThe study aimed to assess the growth and decrease in vegetation trend by Enhanced Vegetation Index (EVI2) through the application of statistical tests and Markov's chain in the state of Rio de Janeiro (SRJ). Monthly data from EVI2 were calculated for the vegetations of the State of Rio de Janeiro (SRJ) from 2001 to 2012. Mann-Kendall (MK), Pettitt (P) and Estimator of Curvature Slope Sen (Se) tests assessed EVI...
Caracterização da seca e seus efeitos na produção da cultura do milho para as d...
Gois, Givanildo deCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Dados meteorológicos de precipitação e temperatura de 23 estações fornecidas pelo 5o Distrito do Instituto Nacional de Meteorologia (INMET), representativas de nove mesorregiões do Estado foram utilizados para a avaliação e teste do desempenho dos Índices de Precipitação Padronizada (SPI), do Índice de Palmer (PDSI) do Método dos Decis (MD) e do Índic...