نتایج جستجو برای: evaporation

تعداد نتایج: 21316  

A Mohammadin Shoeili H Fathian, M Asadiloor

Evaporation process, the main component of the water cycle in nature, is essential in agricultural studies, hydrology and meteorology, the operation of reservoirs, irrigation and drainage systems, irrigation scheduling and management of water resources. Various methods have been presented for estimating evaporation from free surface including water budget method, evaporation from pan and experi...

ژورنال: علوم آب و خاک 2011
صفر معروفی , , مجتبی شادمانی , ,

In this research, based on the observed data of Class A pan evaporation and application of non-linear regression (NLR), artificial neural network (ANN), neuro-fuzzy (NF) as well as Stephens-Stewart (SS) methods daily evaporation of Kerman region was evaluated. In the cases of NLR, ANN and NF methods, the input variables were air temperature (T), air pressure, relative humidity (RH), solar radia...

lak, shahram, matrudi, mohamad,

In order to effect of mycorrhiza fungi on the quantitative and qualitative traits of cowpea in different irrigation intervals, this research was carried out in 2017 in Khorramshahr as split plot based on randomized complete block design with four replications. The treatments consisted of different irrigation intervals at four levels of 55, 80, 105 and 130 mm evaporation from class A evaporation...

Journal: :پژوهش های زراعی ایران 0
علی ماهرخ فرهاد عزیزی

this study was conducted to determine the effect of cliniptilolite natural zeolite on deficit irrigation stress tolerance on maize cultivar ksc704. the experiment was laid out as a factorial design based on randomized complete block with three replications at seed and plant improvement institute, karaj in 2012. four irrigation levels, including irrigation after 70, 95, 120 and 145 mm cumulative...

Journal: :مدیریت آب و آبیاری 0
نیاز ابراهیمی پاک استادیار، بخش آبیاری و فیزیک خاک، مؤسسه تحقیقات خاک و آب، کرج - ایران مهرزاد مستشاری استادیار، بخش تحقیقات خاک و آب، مرکز تحقیقات کشاورزی و منابع طبیعی قزوین، قزوین - ایران

this study evaluated the irrigation water management and different amounts of boron fertilizer affacts on yield and and water use efficiency of sugar beet. the two-factor factorial design in randomized complete block with three replications of irrigation and different levels of boron fertilizer for three years (2000-02) was designed in qazvin. the main four irrigation treatments were t1, t2, t3...

Journal: :Physics of Fluids 2021

Thin-film evaporation from nanoporous membranes is a promising cooling technology employed for the thermal management of modern electronic devices. We propose an effective one-dimensional analytical approach that can accurately predict temperature and density jump relations, rates, arbitrary membrane configurations. This accomplished through specification coefficient encompasses influence diffe...

Karimi-Googhari, Sh

Accurate estimation of evaporation is important for design, planning and operation of water systems. In arid zones where water resources are scarce, the estimation of this loss becomes more interesting in the planning and management of irrigation practices. This paper investigates the ability of artificial neural networks (ANNs) technique to improve the accuracy of daily evaporation estimation....

ژورنال: علوم آب و خاک 2019

Evaporation is one of the important components in water body’s management, leading to changes in the water level and water balance. Also, its accurate estimation is faced with certain difficulties and complexities. Because of the limitations of physical and empirical methods based on the meteorological data, remote sensing technology can be widely used for evaporation calculation due to its cap...

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