نتایج جستجو برای: wetting time

تعداد نتایج: 1897792  

ژورنال: علوم آب و خاک 2012
آزاده صفادوست, , علی اکبر محبوبی, , محمد‌رضا مصدقی, , معصومه نیکپور, ,

The effects of soil intrinsic properties on soil structural stability were evaluated. Soil samples (33 series) with wide ranges of properties and structural stability were collected from Hamadan province. Two structural stability indices were used: mean weight diameter (MWD) using Yoder method and De Leenheer-De Boodt index (DDI). Wetting pre-treatments (fast wetting to saturation and slow wett...

2010
S. Patra R. Sahoo R. K. Panda K. Himasankar B. B. Barik

In the present research work mouth dissolving tablets of domperidone were developed with superdisintegrants like crospovidone, croscarmellose sodium and sodium starch glycollate in various concentrations like 3%, 4% and 6% w/w by direct compression method. All formulations were evaluated for physical characteristics of compressed tablets such as weight variation, hardness, friability, content u...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2012
Roeland C A van der Veen Tuan Tran Detlef Lohse Chao Sun

A drop impacting on a solid surface deforms before the liquid makes contact with the surface. We directly measure the time evolution of the air layer profile under the droplet using high-speed color interferometry, obtaining the air layer thickness before and during the wetting process. Based on the time evolution of the extracted profiles obtained at multiple times, we measure the velocity of ...

2003
A. Dupuis A. J. Briant C. M. Pooley Julia M. Yeomans

We use a three-dimensional lattice Boltzmann model to investigate the spreading of mesoscale droplets on homogeneous and heterogeneous surfaces. On a homogeneous substrate the base radius of the droplet grows with time as t for a range of viscosities and surface tensions. The time evolutions collapse onto a single curve as a function of a dimensionless time. On a surface comprising of alternate...

2001
F. de los Santos M. M. Telo da Gama M. A. Muñoz

– We study a Langevin equation describing non-equilibrium depinning and wetting transitions. Attention is focused on short-ranged attractive substrate-interface potentials. We confirm the existence of first-order depinning transitions, in the temperature-chemical potential diagram, and a tricritical point beyond which the transition becomes a non-equilibrium complete wetting transition. The coe...

Journal: :J. Comb. Theory, Ser. A 2006
Jian-Yi Shi

Let W be a finite or an affine Coxeter group and Wc the set of all the fully commutative elements in W . For any left cell L of W containing some fully commutative element, our main result of the paper is to prove that there exists a unique element (say wL) in L ∩ Wc such that any z ∈ L has the form z = xwL with `(z) = `(x) + `(wL) for some x ∈ W . This implies that L is left connected, verifyi...

Journal: :jundishapur journal of natural pharmaceutical products 0
eskandar moghimipour cellular and molecular research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran anayatollah salimi nanotechnology research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran saeed rezaee department of pharmaceutics, school of pharmacy , zanjan university of medical science, zanjan, ir iran maryam balack department of pharmaceutics, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran somayeh handali nanotechnology research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; nanotechnology research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9161147998, fax: +98-6113738381

conclusions in conclusion, the suspension containing veegum 1%, sodium carboxy methyl cellulose 1%, glycerine 0.2%, sodium citrate 0.3% and sorbitol 20 % was chosen as the most physically stable formulation. results according to the results, glycerin (0.2%) and sodium citrate (0.3%) had the best effect on the suspension stability as wetting and flocculating agents, respectively. rheological pro...

Journal: :Journal of pediatric psychology 2007
Carol Joinson Jon Heron Alan Emond Richard Butler

OBJECTIVE To investigate the psychological problems associated with bedwetting and combined (day and night) wetting in children aged around 7(1/2) years. METHODS Participants were a cohort of over 8000 children enrolled in the population-based Avon Longitudinal Study of Parents and Children. Parents completed postal questionnaires assessing common childhood psychological problems, and childre...

Journal: :Archives of disease in childhood 1977
I Berg D Fielding R Meadow

Forty children with day and night wetting were compared with 46 with night wetting only to see if day wetting was then associated with particular clinical features. Interviews with mothers, questionnaries completed by teachers, physical investigations, and measurement of functional bladder capacities were used. Day wetting combined with bed wetting occurred equally in boys and girls and was ass...

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