Results 11 to 20 of about 3,248 (132)

Stochastic Modelling of Daily Precipitation in Semi‐Arid Regions Using Markov Chains and Parametric Distributions

International Journal of Climatology, Volume 46, Issue 4, 30 March 2026.
This study applies stochastic rainfall models combining Markov Chains with gamma and mixed exponential distributions to a semi‐arid climate in Northeast Brazil. Model structures were evaluated using Bayesian Information Criterion (BIC), with maximum likelihood (MLM) for parameter estimation and cumulative distribution functions (CDFs) for validation ...
Gabriel Magno Cavalcante Calado, Mayke Feitosa Progênio, José Adalberto da Silva Filho, Ialy Rayane de Aguiar Costa, Severino Martins Neto, Artur Paiva Coutinho   +5 more
wiley   +1 more source

Sistema para formação e aperfeiçoamento de feitores de serviços de água da SABESP [PDF]

Revista DAE, 1981
Dado o enfoque sistêmico a que nos propusemos, o presente trabalho é apresentado nas três Etapas convencionais, ou seja, Dados de Entrada, Dados de Processamento e Dados de Saída.
Carlos Rolim Affonso, Carlos Rubens Zacarias, Oscar Vicente Simões de Oliveira, Maria Cristina Boa Nova   +3 more
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Critical Slowing Down Reveals Hydrologic Resilience Loss Across Amazon Sub‐Basins

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract The Amazon's hydroclimate exhibits basin‐scale early‐warning signals of critical slowing down (CSD), a statistical signature of declining resilience as systems approach critical transitions. We apply a multi‐metric framework to precipitation, evapotranspiration, Soil moisture (SM), and extreme streamflows, tracking rolling variance, lag‐1 ...
Germán Poveda
wiley   +1 more source

Construção de reservatórios e estações de tratamento de água em alvenaria de tijolos maciços [PDF]

Revista DAE, 1987
Apresenta tecnologias alternativas de baixo custo para construção de reservatórios e ETAs de alvenaria para pequenas comunidades, dispensando a utilização do concreto armado em toda obra, possibilitando a execução por mão-de-obra não especializada em ...
Paulo Yochi Kakihara, Nilson Antonio Golineli, Paulo Cezar dos Santos, Levi Omori   +3 more
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Streamflow Elasticity to Precipitation Distribution and Potential Evapotranspiration Across South America

Hydrological Processes, Volume 40, Issue 2, February 2026.
Graphical abstract summarizing the modelling experiments used to quantify streamflow elasticity to changes and temporal redistribution of precipitation across South America, highlighting stronger effects of seasonal redistribution and larger responses in humid climates. ABSTRACT This study examines the sensitivity of mean, high and low streamflows (i.e.
A. Kolling Neto, R. C. D. de Paiva, V. A. Siqueira, J. P. L. F. Brêda, W. Collischonn   +4 more
wiley   +1 more source

Utilização de indicadores de caráter social na definição de prioridades de obras de saneamento [PDF]

Revista DAE, 1986
Propõe-se o estabelecimento de indicadores de caráter social, a serem utilizados na definição de prioridades dos programas de investimento em obras de saneamento, em paralelo com os indicadores habituais, de caráter técnico e econômico.
Marcos Gorelik Ajzenberg, Ana Lúcia Brasil, Francisco José de Toledo Piza, José Almary Teles Fonteneli   +3 more
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Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, Volume 68, Issue 1, January 2026.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Fish distribution across altitudinal gradients in the Upper Paraguay River Basin: Implications for conservation in the Pantanal region

Conservation Science and Practice, Volume 7, Issue 7, July 2025.
This paper approaches the patterns in fish distribution across the altitudinal gradient in the Upper Paraguay River basin, from uplands to the floodplain. We compiled more than 75,000 available fish records and registered 342 fish species and your distribution along altitudinal gradient. Floodplain portion have higher species diversity than headwaters,
Adriana Maria Espinoza Fernando, Francisco Severo‐Neto, Fabiane Silva Ferreira, Lúcia Mateus, Karina K. Tondato‐Carvalho, Elaine Antoniassi Luiz Kashiwaqui, Heriberto Gimenes Junior, Wladimir M. Domingues, Carla Simone Pavanelli, Henrique Ledo Lopes Pinho, Jerry Penha, Yzel Rondon Súarez   +11 more
wiley   +1 more source

The economic displacement of thousands of fishers in the Pantanal, Brazil: A telling story of small‐scale fisheries marginalization worldwide.

Fish and Fisheries, Volume 25, Issue 6, Page 951-958, November 2024.
Abstract A new policy in the Pantanal wetland, Brazil, aims to economically displace thousands of artisanal fishers from one‐third of the region. The legislation disregards several FAO Voluntary Guidelines for Securing Sustainability in Small‐Scale Fisheries' guiding principles (SSF guidelines). Considering that 2024 marks the 10th anniversary of these
Adriana Maria Espinoza Fernando, Douglas Alves Lopes, Lúcia Mateus, Jerry Penha, Yzel Rondon Súarez, Agostinho Carlos Catella, André Valle Nunes, Neusa Arenhart, Rafael Morais Chiaravalloti   +8 more
wiley   +1 more source

Desidratação de lodos utilizando o sulfato ferroso como condicionante químico [PDF]

Revista DAE, 1991
O trabalho aborda o emprego alternativo do sulfato ferroso como condicionante químico do lodo a ser prensado em filtros-prensa e utiliza o teste de resistência específica do lodo como indicador de dosagem a ser empregado.
Gilson Niceas de Almeida, Maria Carolina Gonçalves, Sofia Arneiro Zappa Guimarães   +2 more
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