细化搜索
结果 1-5 的 5
Uso optimo del agua. 1: Uso optimo del agua en ambiente de escasez e incertidumbre [toma de decisiones; programacion lineal; modelos].
1984
Arenas C Jorge | Pistono A Jose L. | Acevedo H Edmundo
Plataforma comparativa para consumos de energía, agua y huella de carbono en bodegas de vinos 全文
2017
Patricio, Núñez | Paulina, Flores | Lucía, Preller
This work, relates the wine production with efficient use of water, energy and fuel, and the greenhouse gases generation. A web platform was developed, based on the results of a set of six test runs in vineyards, which production are in the range of 3 to 25 million of liters of wine per year. The following stages was considered: 1. Winemaking Stage. 2. Reception of grape in hoppers or selection tables. 3. Alcohol Fermentation, Maceration and Reassembly. 4. Take-off and pressing. 5. Malolactic fermentation. 6. Stabilization and Filtered. 7. Bottling. The process of white wine is quite similar, except for the order of the stages and the absence of maceration. The platform results are based on the experimental data, which was used to formulate a model among the wine production geographic location and utility consumption: water, fuel and electricity. At the time, the platform is based on excel and visual basic, so it can be run on any standard computer. Main results of the web platform are expressed in kWh/liters of wine, or liters of water/liters of wine, for example, parameters that are useful for the generation of opportunities to improve best practices in the industry of wine.
显示更多 [+] 显示较少 [-]IRREQ-2. A microcomputer programme for the calculation of irrigation requirements. Serie Terra e Agua do Instituto Nacional de Investigacao Agronomica, Comunicacao 44.
1986
Snijders F.L.
Uso optimo del agua. 2: Toma de decisiones en base a tecnicas alternativas para la optimizacion de los ingresos y minimizacion de riesgos [toma de decisiones, programacion lineal, modelos].
1984
Arenas C Jorge | Pistono A Jose L. | Acevedo H Edmundo
Solution analytique pour un abaissement du niveau piézométrique: les solutions de Riesenkampf et Numerov revisitées Solución analítica para un descenso de agua subterránea freática: las soluciones de Riesenkampf y Numerov reconsideradas 潜水下降的解析解法:再论Riesenkampf 和 Numerov方法 Solução analítica para uma queda de água subterrânea freática: as soluções de Riesenkampf e Numerov revisitadas Aнaлитичecкoe peшeниe зaдaчи o вoдoпaдe гpунтoвыx вoд: вoзвpaщeниe к peшeниям Pизeнкaмпфa и Hумepoвa | Analytical solution for a phreatic groundwater fall: the Riesenkampf and Numerov solutions revisited 全文
2012
Kacimov, A. R.
Steady, two-dimensional Darcian flow in a homogeneous isotropic unconfined aquifer, bounded from below by a rectangular wedge representing bedrock, is studied by the theory of holomorphic functions. A triangle of the complex potential domain is mapped onto a circular triangle in the hodograph plane with the help of an auxiliary variable. A full potential theory results in closed-form integral representations for the complex potential and complex velocity, from which the flow rate and free surface are calculated using computer algebra built-in functions. This solution, uniformly valid in the whole flow domain, is compared with simpler approximate ones, retrieved from an analytical archive. Two flow zones are distinguished: a tranquil subdomain where the Dupuit-Forchheimer approximation is suitable and a nappe (a subdomain with a rapidly changing Darcian velocity and steep slope of the phreatic surface) where the Numerov or Polubarinova-Kochina solutions, in terms of the full potential model, are available. Approximations in the two zones are conjugated by matching the positions of the water table and the flow rates, which eventually agree well with the obtained comprehensive solution.
显示更多 [+] 显示较少 [-]