نتایج جستجو برای: moisture retention curve

تعداد نتایج: 233029  

Journal: :Water 2022

In order to study the strength characteristics of alluvial silt in lower Yellow River Channel at Luokou, Jinan, by varying moisture content five times, direct shear tests were conducted and soil–water curves obtained explore relationships between matric suction as well bishop coefficient strength. The curve test shows that water retention samples can be fitted VG (Van Genuchten) model with appr...

Journal: :The Journal of Agriculture of the University of Puerto Rico 1969

2005
Euan Fleming Pauline Fleming Heidi Rodgers Garry Griffith David Johnston

A stochastic input distance function is estimated to analyse the efficiency with which physical characteristics of individual lot-fed beef cattle in Australia are combined with conventional inputs to produce a final product possessing defined quality attributes. High mean technical efficiency estimates are reported for all animals and by breed. All partial output elasticities with respect to in...

Journal: :Journal of environmental quality 2012
Marc I Stutter Samia Richards

The retention of nutrients in narrow, vegetated riparian buffer strips (VBS) is uncertain and underlying processes are poorly understood. Evidence suggests that buffer soils are poor at retaining dissolved nutrients, especially phosphorus (P), necessitating management actions if P retention is not to be compromised. We sampled 19 buffer strips and adjacent arable field soils. Differences in nut...

Agricultural residues and various other materials are currently being used as additives to improve the physical and chemical properties of soil. Iran is located in an arid and semiarid region, so using strategies to reduce water use will reduce the problem water scarcity. The use of superabsorbent to increase water uptake and retention is one of the solutions that have been applied to improve w...

Journal: :Molecules 2012
Shaukat Ali Shahid Ansar Ahmad Qidwai Farooq Anwar Inam Ullah Umer Rashid

A novel poly(acrylic acid-co-acrylamide)AlZnFe₂O₄/potassium humate( )superabsorbent hydrogel nanocomposite (PHNC) was synthesized and its physical properties characterized using SEM, Energy Dispersive X-ray (EDX) and FTIR spectroscopic techniques. Air dried sandy loam soil was amended with 0.1 to 0.4 w/w% of PHNC to evaluate its soil moisture retention attributes. Effect of PHNC amendment on pH...

Journal: :journal of sciences islamic republic of iran 0

polarization for au/pb(zr ti )o /yba cu o ferroelectric capacitor has been studied and measured by pulse method. a sequence of pulses with amplitudes varying from 0 to 10 volts in 2 volt steps is applied and a conventional polarization curve is obtained by integrating the charge flow from the polarization switching induced by the voltage ramp. a value of 25?c/cm2 is measured for the saturated p...

2013
Hiroaki Onoda Taisuke Yamaguchi

As a white pigment, titanium oxide is used for cosmetic application. This oxide is well known to have the photo catalytic activity. Therefore a certain degree of sebum is decomposed by the ultraviolet radiation in sunlight. In this work, titanium phosphates were prepared with additives (urea, sodium lactate, and glycerin) as a novel white pigment. Their chemical composition, powder properties, ...

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