نتایج جستجو برای: water retention curve

تعداد نتایج: 732045  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
ali maghari zahra safaei

in this work, we have calculated the joule-thomson inversion curve of two important associating fluids, namely water and methanol, from the saft equation of state. comparisons with the available experimental data, for water and methanol indicate that this molecular based equation of state gives good prediction of the low temperature branch; but, unfortunately, due to lack of isenthalpic data fo...

Journal: :International journal of hydrology 2021

Understanding hydrological behavior is an important part of effective watershed management and planning. Runoff resulted from rainfall a component that needed for efficient water resource In this paper, GIS based SCS-CN runoff simulation model was applied to estimate in Awash river basin. Global Curve Number (GCN250), Maximum Soil Water Retention (S) Rainfall used as input model. The final surf...

ژورنال: علوم آب و خاک 2014

In order to assess hydraulics of LNAPLs in soil, the soil retention curves of petroleum and water were both determined through hanging column method. And, the hydraulic conductivity of petroleum and water were determined by steady head method. The water and petroleum hydraulic conductivities were 7.27 and 57.84 cm.day-1, respectively. The soil retention parameters were obtained based on van Gen...

ژورنال: علوم آب و خاک 2014
جعفری, سیروس, خلیلی مقدم, بیژن, قربانی دشتکی, شجاع, مرادی, فرزاد,

Soft computing techniques have been extensively studied and applied in the last three decades for scientific research and engineering computing. The purpose of this study was to investigate the abilities of multilayer perceptron neural network (MLP) and neuro-fuzzy (NF) techniques to estimate the soil-water retention curve (SWRC) from Khozestan sugarcane Agro-Industries data. Sensitivity analysi...

Journal: :The American journal of cardiology 1959
R V FORD J B ROCHELLE A C BULLOCK C L SPURR C HANDLEY J H MOYER

D RUGS to promote the excretion of water in edematous states of varied etiology form an essential part of the equipment of every practitioner. Although the common denominator of all types of edema appears to be sodium retention by the kidney, many factors may be operative; viz., cardiac failure, decreased renal function, excess salt-retaining steroids, excess antidiuretic hormone, serum electro...

Journal: :Water Resources Management 2022

The relationship between per capita municipal water use (PCMWU) and gross domestic product (PCGDP) (purchasing power parity, constant 2011 US$) is statistically analysed for each country in the world. results indicate that PCMWU will increase with rising PCGDP at beginning, which then decrease when reaches a certain level. This trend follows rules of Water Use Kuznets Curve, an inverted U-shape...

Journal: :E3S web of conferences 2023

Non-destructive tests, such as geophysical electrical resistivity can be useful to determine how Biocementation treatment in soils is distributed volume. However, affected not only by void ratio but also water content and the chemical nature of pore fluid. This paper presents an experimental investigation performed analyse changes on a sandy soil after biocementation using enzymes, considering ...

Journal: :پژوهش آب در کشاورزی 0
امید بهمنی استادیار دانشگاه بوعلی سینا. بهرام رمضانی دانشجوی سابق کارشناس ارشد دانشگاه بوعلی سینا.

soil water retention curve (swrc) is important in the studies of soil and water relationship, soil conservation, irrigation scheduling, drainage, solute transport, plant growth and crop water stress. the performance of 10 models (simons et al., libardy et al., campbell, farrell and larson, van genuchten, brooks and corey, driessen, exponential bruce-luxmore, power bruce-luxmore, and rogowski) w...

Journal: :Water 2021

Many watershed models employ the Soil Conservation Service Curve Number (SCS-CN) approach for runoff simulation based on soil and land use information. These implicitly assume that is generated by Hortonian process and; therefore, cannot correctly account effects of topography, variable source area (VSA) and/or moisture distribution in a watershed. This paper presents new distributed CN-VSA met...

Journal: :Physics And Chemistry Of The Earth, Parts A/b/c 2021

The in-situ monitoring of soil suction and water content is important for a range applications from civil engineering (e.g. estimation groundwater infiltration) to agriculture optimization irrigation). efficiency field systems has recently improved thanks the development sensors that continuously record status data remotely transmit them through internet. These are, however, accessed by users o...

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