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9º, 26º e 35º CONGRESSO BRASILEIRO DE ENGENHARIA AGRÍCOLA - 1979 / 1997 / 2006
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26º CONGRESSO BRASILEIRO DE ENGENHARIA AGRÍCOLA - CAMPINA GRANDE - UFPB 1997
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26º CONBEA 1997 - Seção Pôster - Engenharia de Água e Solo
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Recent submissions

26º CONBEA 1997 - Seção Pôster - Engenharia de Água e Solo: Recent submissions

Now showing items 61-80 of 274

Perda de carga em curvas conjugadas de saída de bomba.

CARVALHO, Jane Maria de; BARRETO, Antônio Carlos; CRUZ, Othon Carlos da; FARIA, Manoel Alves de; CARVALHO, Jacinto de Assunção (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

It was carried out a study in order to determine the head loss in curves with gate valves and check valve, with diameter of 2, 3 and 4 inches, manufactured by GERMEK. The objetive of this study was the techinal data ...
Otimização do desempenho de sistemas de irrigação do tipo pivô central com o uso da equação de Green-Ampt.

RODRIGUES, Lineu Neiva.; PRUSKI, Fernando Falco. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

This study developed a methodology based on Green-Ampt equation which allows to optimize the performance of central-pivot irrigation systems. This optimization was attained by adjusting the permissible maximum precipitation ...
Otimização de projetos hidroagrícolas através da programação não-linear.

MENDES, Alexandre Rostand Pereira.; DANTAS NETO, José.; AZEVEDO, Carlos Alberto Vieira de.; GUERRA, Hugo Orlando Carvallo. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

It was studied the allocation of irrigated areas, by applying the non-linear programming technique, proposing to optimize the agricultural projects. It was verified that the operational research, by means of non-linear ...
O potencial e as disponibilidades de água subterrânea do Nordeste.

ALBUQUERQUE, José do Patrocínio Tomaz.; RÊGO, Janiro Costa. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

This paper represents an evaluation of the groundwater of the North-eastern region of Brazil, considering it as a component of the hydrologic cycle. The basic premise is that the long range mean groundwater flow is obtained ...
O método inverso na determinação da condutividade hidráulica não-saturada para fins de irrigação por gotejamento.

COELHO, Eugênio Ferreira.; OR, Dani.; SOUSA, Valdemício Ferreira de. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

The inverse method is presented for determining the unsaturated hydraulic conductivity, K(h), of a silt loam soil under point source and steady-state flow. Water content and matric potential (h) were monitored in the soil ...
Níveis de água e de nitrogênio na cultura do arroz irrigado por aspersão.

OLIVEIRA, Conceição de Maria Marques de; MACHADO, José Ricardo (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

An experiment under splinkler irrigation was carried out in Rural Engeneering Department the Universsity, São Paulo state, to study the effects of different water height and doses of nitrogens fertilizer on the growth ...
O efeito da irrigação por aspersão no selamento superficial avaliado através da emergência de plântulas de soja (Glycine max).

SILVA, Flávio de Oliveira.; MATSURA, Edson Eiji. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

This research has identified the frequency and the granulometry of droplet irrigation on soya seedling germination. Several degrees of seedling germination were observed in different conditions due to the superficial ...
Monitoramento de sais na água e nos solos irrigados do Projeto Vereda Grande, PB.

MACÊDO, Ladilson de Souza.; MENINO, Ivonete Berto.; SANTOS, José Bezerra dos. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

The temporal variability of salts in water irrigation and its effects on the soils of Project Vereda Grande, in Boqueirão, PB, Brazil, were evaluated through random sample stratified in three lots farmers. during January ...
Monitoramento sazonal do desempenho de um sistema de irrigação por sulcos no perímetro irrigado de São Gonçalo-PB.

SANTANA, Ednaldo Fernandes de; AZEVEDO, Carlos Alberto Vieira de; BARRETO, Aurelir Nobre; DANTAS NETO, José; BEZERRA, José Renato Cortez (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

This research performed a seasonal monitoring of the furrow irrigation system performance in the São Gonçalo-PB irrigation district, through a systematic control of the hydraulic conditions of each irrigation event, ...
Monitoramento da irrigação tradicional na cultura de milho no Vale de Punata (Bolívia).

ARCE, Aquiles.; GUTIERREZ, Zulema.; RODRIGUES, Carlos. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

In this research the monitorament of traditional furrow irrigation system’s performance in corn cultivate was realized, in a arid region of the Cochabamba - Bolivian. It was noted that the events and efficiency parameters ...
Monitoramento do processo de recuperação de um solo aluvial sódico no vale do Curú-CE.

SOARES, Osvaldo Hélio Dantas; COSTA, Raimundo Nonato Távora; SAUNDERS, Luís Carlos Uchôa; HERNANDEZ, Fernando Felipe Ferreyra (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

With the objective to analyses the evolution of physical and chemical parameters in an alluvial alkaline soil in process of reclamation, a research was conducted in the Curu Valley Experimental Station at Ceará. The ...
O fluxo BI-D aplicado para proteção de poço: o papel da zona de extração na descontaminação subterrânea.

SARMA, Seemanapalli V. K.; NOBREGA, Silvestre Lopes da. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

The zone of extraction of a well was traced in the Municipality of São Bento in the M.R.H. 89, PB. The test results of production well of C.D.R.M. were utilized. The drawdowns resulting from multiples of pumping rates ...
Modelos para estimar a infiltração da água do solo. comparação com os modelos de Kostiakov e Horton.

ANDRADE, Antônio Ricardo Santos de.; GUERRA, Hugo Orlando Carvallo.; BARRETO, Aurélir Nobre.; BEZERRA, José Renato Calazan. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

This work compare two methods to estimate water infiltration in the soil, based on statistical inference and mathematical fundaments (Movil Means Model and Polinomial Model) and the Kostiakov and Horton Models with date ...
Modelos matemáticos para o microgotejador Katif.

LUCENA, Kennedy Flávio Meira de.; AZEVEDO, Carlos Alberto Vieira de.; DANTAS NETO, José.; MATOS, José de Arimatea de.; MEDEIROS, Mônica Garcia Agra de. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

It was tried to find a mathematical model that would better describe the relationship between discharge and pressure for the Katif emitters (3.75 l/h). It was tested 25 mathematical models, by using the software CURVEFIT. ...
Modelo para manejo de pluma de contaminante em um sistema de água subterrânea. Parte 1: desenvolvimento.

SUGUINO, Hermínio Hideo.; PERALTA, Richard Carl. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

The objective of this present paper was to develop a simulation and optimization model for groundwater management (MACMAN) for multilayer streamaquifer systems. The model uses the response matrix method for steady or ...
Modelos de programação linear e não-linear para determinação da equação do plano em sistematização de terras.

SAAD, João Carlos Cury. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

The purpose of this paper was evaluate the volume of earth work using least square method (Scaloppi & Willardson, 1986), linear and nonlinear programming models. The results showed that least square method and nonlinear ...
Modelo para coeficiente de tanque classe "A" para o semi-árido agrícola do nordeste brasileiro.

AMORIM, Marcelo Cid de; SEDIYAMA, Gilberto C; MELLO, Jorge L. P (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

This work was conducted in the of Governador Dix-Sept Rosado city (RN), with climate data of november of 1987 to december of 1989. Pan mean coefficients for this locality were obtained by the relation between ETo data ...
Modelo para avaliação de desempenho de sistemas de drenagem subterrânea e cálculo de espaçamento de drenos. Parte 3: aplicação.

DUARTE, Sergio Nascimento; FERREIRA, Paulo Afonso; PRUSKI, Fernando Falco; MARTINEZ, Mauro Aparecido (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

Economical drain spacings obtained from the proposed model (SIMDRENO) and from DRAINMOD were compared to conservative drainage design criteria. The results obtained from both models were similar and showed a drain ...
Modelo para avaliação de desempenho de sistemas de drenagem subterrânea e cálculo de espaçamento de drenos. Parte 2: validação de campo.

DUARTE, Sergio Nascimento; FERREIRA, Paulo Afonso; PRUSKI, Fernando Falco; MARTINEZ, Mauro Aparecido (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

The performance of the proposed computer model (SIMDRENO) was compared to that of DRAINMOD using field data of water table fluctuations. When comparing both models, the predictions were better from SIMDRENO, using Krayjenhoff ...
Modelo para avaliação de desempenho de sistemas de drenagem subterrânea e cálculo de espaçamento de drenos. Parte 1: desenvolvimento e análise de sensibilidade.

DUARTE, Sergio Nascimento.; FERREIRA, Paulo Afonso.; MARTINEZ, Mauro Aparecido.; PRUSKI, Fernando Falco. (BrasilUFCGUniversidade Federal de Campina Grande, 1997)

A computer model (SIMDRENO) was developed in order to simulate the water table fluctuations and soil water contents in root zone as a function of daily precipitation data, evapotranspiration, soil physical-hydric parameters, ...

Now showing items 61-80 of 274

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