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Registro Completo |
Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
Data corrente: |
13/02/1996 |
Data da última atualização: |
11/11/2011 |
Autoria: |
SOUZA, F. de. |
Título: |
Non linear hyorddynamic model of furrow irrigation. |
Ano de publicação: |
1974 |
Fonte/Imprenta: |
California: University of California, 1974. |
Páginas: |
172p. |
Idioma: |
Inglês |
Notas: |
Tese Doutorado. |
Conteúdo: |
A mathematical model of the entire furrow-irrigation process has been developed. This model can be used to analyze and predict the performance of free-draining sloping furrow irrigation systems; capability for prediction of flow with cutback was also provided. The model is based on the solution of the complete continuity and momentum conservation equations, which govern the unsteady, gradually varied flow of water in open channels. Therefore, it is a complete hydrodynamic model. In addition, it has been demonstrated that zero-inertia conditions can also be simulated by the present model. A fully implicit finite-difference scheme was used to find approximate solutions for the integrated form of the non-linear governing equations, which are simultaneously solved by the double-sweep technique. The input to the model consists of the inflow discharge, furrow slope, cutoff (application) time, length, roughness (the Manning n), soil-infiltration characteristics (k and a in the Kostiakov equation), and furrow shape (C and M in the top width equation, B = CyM, for a power-law cross section). Output information consists of advance and recession times, post-irrigation areal distribution of infiltrated water along the furrow, runoff volume, as well as water application and storage efficiencies. Dimensional analysis was applied to reduce the number of governing parameters in the equations. |
Palavras-Chave: |
Furrow; Mathematical model; Sulco. |
Thesagro: |
Irrigação; Modelo Matemático. |
Thesaurus Nal: |
irrigation. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01919nam a2200205 a 4500 001 1076002 005 2011-11-11 008 1974 bl uuuu m 00u1 u #d 100 1 $aSOUZA, F. de 245 $aNon linear hyorddynamic model of furrow irrigation. 260 $aCalifornia: University of California$c1974 300 $a172p. 500 $aTese Doutorado. 520 $aA mathematical model of the entire furrow-irrigation process has been developed. This model can be used to analyze and predict the performance of free-draining sloping furrow irrigation systems; capability for prediction of flow with cutback was also provided. The model is based on the solution of the complete continuity and momentum conservation equations, which govern the unsteady, gradually varied flow of water in open channels. Therefore, it is a complete hydrodynamic model. In addition, it has been demonstrated that zero-inertia conditions can also be simulated by the present model. A fully implicit finite-difference scheme was used to find approximate solutions for the integrated form of the non-linear governing equations, which are simultaneously solved by the double-sweep technique. The input to the model consists of the inflow discharge, furrow slope, cutoff (application) time, length, roughness (the Manning n), soil-infiltration characteristics (k and a in the Kostiakov equation), and furrow shape (C and M in the top width equation, B = CyM, for a power-law cross section). Output information consists of advance and recession times, post-irrigation areal distribution of infiltrated water along the furrow, runoff volume, as well as water application and storage efficiencies. Dimensional analysis was applied to reduce the number of governing parameters in the equations. 650 $airrigation 650 $aIrrigação 650 $aModelo Matemático 653 $aFurrow 653 $aMathematical model 653 $aSulco
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Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
20/12/1994 |
Data da última atualização: |
04/05/2017 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
HAJI, F. N. P. |
Afiliação: |
FRANCISCA NEMAURA PEDROSA HAJI, CPATSA. |
Título: |
Aspectos biológicos da traça do tomateiro e seu controle. |
Ano de publicação: |
1984 |
Fonte/Imprenta: |
Petrolina: EMBRAPA-CPATSA, 1984. |
Páginas: |
2 p. |
Série: |
(EMBRAPA-CPATSA. Comunicado técnico, 13). |
Idioma: |
Português |
Conteúdo: |
A traça do tomateiro, Scrobipalpula absoluta (Meyrick) (Lepidoptera, Gelechiidae), foi constatada no final de 1981 em áreas irrigadas do Trópico Semi-Árido brasileiro, no vale do Salitre, em Juazeiro, BA. Rapidamente, em poucos meses, disseminou-se nas regiões circunvizinhas de Juazeiro, BA, Petrolina e Santa Maria da Boa Vista, PE. |
Palavras-Chave: |
Aspectos biologicos; Biology; Control; Controle; Controle de praga; Pest; Pest insects; Pests of plants; Pragas; Scrobipalpuloides absoluta; Tomateiro; Tomato; Traça do tomateiro; Traca-do-tomateiro. |
Thesagro: |
Biologia; Inseto; Lycopersicon Esculentum; Praga; Praga de Planta; Scrobipalpula Absoluta; Tomate; Traça; Tuta Absoluta. |
Thesaurus NAL: |
pest control; tomatoes. |
Categoria do assunto: |
-- O Insetos e Entomologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/7315/1/COT13.pdf
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Marc: |
LEADER 01435nam a2200433 a 4500 001 1132226 005 2017-05-04 008 1984 bl uuuu u0uu1 u #d 100 1 $aHAJI, F. N. P. 245 $aAspectos biológicos da traça do tomateiro e seu controle. 260 $aPetrolina: EMBRAPA-CPATSA$c1984 300 $a2 p. 490 $a(EMBRAPA-CPATSA. Comunicado técnico, 13). 520 $aA traça do tomateiro, Scrobipalpula absoluta (Meyrick) (Lepidoptera, Gelechiidae), foi constatada no final de 1981 em áreas irrigadas do Trópico Semi-Árido brasileiro, no vale do Salitre, em Juazeiro, BA. Rapidamente, em poucos meses, disseminou-se nas regiões circunvizinhas de Juazeiro, BA, Petrolina e Santa Maria da Boa Vista, PE. 650 $apest control 650 $atomatoes 650 $aBiologia 650 $aInseto 650 $aLycopersicon Esculentum 650 $aPraga 650 $aPraga de Planta 650 $aScrobipalpula Absoluta 650 $aTomate 650 $aTraça 650 $aTuta Absoluta 653 $aAspectos biologicos 653 $aBiology 653 $aControl 653 $aControle 653 $aControle de praga 653 $aPest 653 $aPest insects 653 $aPests of plants 653 $aPragas 653 $aScrobipalpuloides absoluta 653 $aTomateiro 653 $aTomato 653 $aTraça do tomateiro 653 $aTraca-do-tomateiro
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