نتایج جستجو برای: نرمافزار hydrus 2d3d
تعداد نتایج: 965 فیلتر نتایج به سال:
The effects of canopy evaporation and intensity smoothing during rain events on hillslope subsurface stormflow are poorly understood. While watershed manipulation experiments have suggested that these processes are important at long timescales, such processes may also be important in storm-timescale responses. Notwithstanding, there are few hillslopes for which both internal subsurface stormflo...
PURPOSE An intracanalicular scaffold (Hydrus microstent) designed to reduce intraocular pressure as a glaucoma treatment was tested in human anterior segments to determine changes in outflow facility (C). METHODS Human eyes with no history of ocular disease or surgeries were perfused within 49 hours of death. The anterior segments were isolated and connected to a perfusion system. Flow rates ...
Development of the new, insensitive, energetic compound, NTO (3-nitro-1,2,4-triazol-5-one), creates need for the data on NTO's fate and transport to predict its behavior in the environment and potential for groundwater contamination. To measure the transport of NTO in soils, we conducted miscible-displacement experiments under steady state and interrupted flow conditions using eight soils havin...
HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8-hexamethylcyclopenta-c-2-benzopyrane) and AHTN (7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene) are found in reclaimed municipal wastewater. They may accumulate in soils receiving long-term application of reclaimed water thus adversely impact the soil biota. We evaluated the extent of their accumulation in receiving soils using HYDRUS-1D base...
This study estimated the nitrate and potassium concentration in soil solution of drainage lysimeter using mathematical models developed by Vogeler et al. (1996) Muñoz-Carpena (2005) computational model Hydrus-2D, while comparing simulated observed data statistical parameters. The cultivar used for was ‘Prata Gorutuba’. experimental plots were six lysimeters drainage. Fertigation performed weekl...
یکی از روش های مدیریت آبیاری سطحی برای افزایش بازده، آبیاری موجی یا استفاده ی متناوب از آب در شیار است. هدف از این پژوهش، مقایسه ی شاخص های عملکرد در جریان موجی با روش جریان پیوسته و یافتن نسبت تناوب و بده ورودی مناسب و همچنین، مقایسه ی سرعت پیشروی جبهه ی رطوبتی در طول جویچه در آبیاری موجی نسبت به آبیاری پیوسته است. بدین منظور، جویچه هایی به طول70 متر و دو شدت جریان 5/0 و 2 لیتر بر ثانیه و نسبت...
Salt accumulation within the root zone significantly effects plant growth and development in arid semi-arid regions. Today, use of low-quality irrigation water agricultural production is increasing rapidly, because continuous depletion pollution resources. This means more salt transferred to soil profile. It great importance predetermine practices for sustainable crop production. For this purpo...
A comprehensive understanding of the distribution and water movement substrate in root areas is crucial to design management drip irrigation systems, which a significant step maximizing crop use efficiency by hydrodynamics soilless substrates. In this study, an improved HYDRUS-2D model dynamic growth was used simulate under condition uptake process root, then, compared with observed data. Subst...
An efficient and simple method for matching image features to a model is presented. It is designed to indoor mobile robot self-location. It is a two stage method based on interpretation tree search approach and using straight line correspondences. In the first stage a set of matching hypothesis is generated. Exploiting the specificity of the mobile robotics context, the global interpretation tr...
زمینه و هدف: با افزایش جمعیت جهان و نیاز به تامین غذا، امروزه کشاورزان به استفاده از انواع کودهای نیتراته، آلی و آفت کشها روی آورده اند. کاربرد بی رویه این نهادهها بدون در نظرگرفتن اثرات جانبی آن، مشکلات فراوانی چه از نظر زیست محیطی و چه از نظر سلامتی انسانها به همراه میآورد. این ترکیبات از طریق بارندگی یا آبیاری از محلول خاک وارد منابع آب سطحی و زیرزمینی میشوند. هدف از این تحقیق تعیین م...
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