Wetted Volume
Mostrando 1-10 de 10 artigos, teses e dissertações.
-
1. MODELING SOIL WATER REDISTRIBUTION UNDER SURFACE DRIP IRRIGATION
ABSTRACT The main objective of this study was to develop a numerical model to simulate water distribution, and the shape of the wetted soil volume, resulting from a point source irrigation at the ground surface (dripper), given soil hydraulic properties and irrigation system parameters. The mathematical model was developed in Fortran 90 at the Department of
Eng. Agríc.. Publicado em: 2019-02
-
2. SOIL SOLUTION DISTRIBUTION IN SUBSURFACE DRIP IRRIGATION IN SUGARCANE
Abstract Given the lack of studies on subsurface drip irrigation in sugarcane plantations, there has been a growing demand for such information, mainly regarding soil solution profile and availability to plants. Thus, this study aimed to evaluate the effects of soil-water solution distribution on qualitative and quantitative traits of sugarcane irrigated by
Eng. Agríc.. Publicado em: 2018-04
-
3. Respuesta del duraznero a diferentes patrones de aplicación del agua
An experiment was carried out for three years (2004/05 to 2006/07) on a just implanted peach grove, in the south of Uruguay. Five irrigation treatments were applied: without irrigation (T1), drippers of 1.6 L h-1 at 0.4 m (T2), drippers of 4 L h-1 at 1 m (T3), microjets of 21 L h-1 at 5 m (T4) and drippers of 2 L h-1 at 1 m, two lines by row (T5), following
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2010-01
-
4. Monitoramento de uma solução de nitrato de potássio em um latossolo vermelho-amarelo com uso da técnica de TDR / Monitoring of a nitrate and potassium solution in a red yellow latossolo with use of the techinician TDR
O conhecimento da movimentação da água no solo é de grande importância para a agricultura, pois a água é um dos fatores que mais influenciam no rendimento das culturas. Das várias técnicas utilizadas para o monitoramento do conteúdo de água no solo, a reflectometria no domínio do tempo (TDR) vem sendo bastante difundida entre os pesquisadores por
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2009
-
5. Uma solução semi-analítica para a modelagem do bulbo molhado na irrigação por gotejamento superficial / A semi-analytical solution for the wetted bulb modeling in the surface drip irrigation
O conhecimento das características do bulbo molhado é substancialmente importante para o dimensionamento da irrigação por gotejamento. Devido à complexidade dos fenômenos físicos envolvidos no processo de infiltração e redistribuição de água no solo, desenvolver um modelo matemático que simule o fluxo de água no solo é uma tarefa não muito si
Publicado em: 2009
-
6. Soil solution distribution study applied by subsurface and surface drip irrigation / Estudo da distribuição da solução no solo aplicado por gotejamento enterrado e superficial
Em função do número reduzido de estudos sobre o movimento da água e de íons no bulbo molhado, foi realizado este trabalho com o objetivo de avaliar a distribuição de água e concentração de nutrientes no bulbo formado pelo sistema de gotejamento enterrado em comparação ao superficial. O ensaio foi conduzido na área experimental do Departamento de
Publicado em: 2008
-
7. Otimização das formas de cascos de deslocamento em relação a sua resistência ao avanço. / Displacement hull optimization regarding to ship wave resistance.
Due to an increasing necessity of building new vessels, whether by new orders or fleet renewal, the development of computational programs that could allow optimization of hull shapes is always helpful, saving project time and ensuring better performance at sea. Thus, the development of a synthesis procedure that allows obtaining shapes with better performanc
Publicado em: 2008
-
8. Experimentos didáticos envolvendo radiação microondas
Theoretical and practical aspects of the use of microwave-assisted strategies in chemistry are introduced for students using simple and safe experiments employing a domestic oven. Three procedures are proposed for evaluating the distribution of microwave radiation inside the microwave oven cavity: (1) variation of the volume of marshmallows; (2) drying of fi
Química Nova. Publicado em: 2004-12
-
9. Simplification of methods for the production and storage of specimens to be tested for heat-stable enterotoxin of Escherichia coli.
Experiments with the infant mouse test demonstrated that there is no need of shaking for heat-stable Escherichia coli enterotoxin production when low volume of medium per volume of flask ratios are used in stationary cultures. Centrifugation and filtration of the cultures to be tested are not necessary either, and Merthiolate (1:10,000) used as preservative
-
10. Use of a Sentinel System for Field Measurements of Cryptosporidium parvum Oocyst Inactivation in Soil and Animal Waste
A small-volume sentinel chamber was developed to assess the effects of environmental stresses on survival of sucrose-Percoll-purified Cryptosporidium parvum oocysts in soil and animal wastes. Chambers were tested for their ability to equilibrate with external chemical and moisture conditions. Sentinel oocysts were then exposed to stresses of the external env
American Society for Microbiology.