نتایج جستجو برای: diffusion

تعداد نتایج: 163312  

Journal: :iranian journal of science and technology (sciences) 2012
s. rahiman

plants are potent biochemists; biologically active compounds present in the medicinal plants have always been ofgreat interest to scientists working in this field. thus, the aim of the current study was to screen the antimicrobial activity of acacia nilotica, ziziphus mauritiana, bauhinia variegate and lantana camara against some selected clinical isolated strains. although previous studies hav...

Journal: :jundishapur journal of microbiology 0
shaza anwar al laham department of pharmacology and toxicology, faculty of pharmacy, damascus university, damascus, syria; department of pharmacology and toxicology, faculty of pharmacy, damascus university, damascus, syria. tel: +96-393375655, +96-30113136591 frdoos mohammad al fadel department of pharmacology and toxicology, faculty of pharmacy, damascus university, damascus, syria

background aeromonas hydrophila cause one of the most important diseases in fishes and lead to economic losses, and may be contaminated human beings. objectives the current research aimed to investigate the anti-bacterial activity shown by the extracts prepared from different parts of olea europea, myrtus communis, thymus vulgaris, rosmarinuis officinalis, and achillea falcata that grow in syri...

Journal: :تحقیقات آب و خاک ایران 0
مجتبی بارانی مطلق حسن توفیقی

the release of fe from soil solid phases into soil solution is a dynamic process that regulates the continuous supply of this element to growing plants. to ascertain the pattern of fe release, the kinetics of fe release from six soils by diethylenetriaminepentaacetic acid (dtpa) solution were investigated using soil samples taken from two different agroclimatic regions of iran. all soils were c...

Background: The compositions of Ferrous sulphate, Agarose and Xylenol orange dye (FAX) and Ferrous sulphate, Gelatin and Xylenol orange dye (FGX) in solution of distilled water and sulphuric acid are two tissue-equivalent gel dosimeters. Ionizing radiation causes oxidation of Fe2+ ion to Fe3+ ions which diffuse through the gel matrix and blur the image of absorbed dose over a period of hours af...

A Miglani S Kaushal,

The present investigation is concerned with the reflection of plane waves from a free surface of a micropolar thermoelastic diffusion half space in the context of coupled theory of thermoelastic diffusion. The amplitude ratios of various reflected waves are obtained in a closed form. The dependence of these amplitude ratios with an angle of propagation as well as other material parameter are sh...

2017
Sijia Wang Daniel J. Peterson Yong Wang Qing Wang Thomas J. Grabowski Wenbin Li Tara M. Madhyastha

As diffusion tensor imaging gains widespread use, many researchers have been motivated to go beyond the tensor model and fit more complex diffusion models, to gain a more complete description of white matter microstructure and associated pathology. Two such models are diffusion kurtosis imaging (DKI) and diffusion basis spectrum imaging (DBSI). It is not clear which DKI parameters are most clos...

Journal: :Magnetic resonance in medicine 2013
Emmanuel Caruyer Christophe Lenglet Guillermo Sapiro Rachid Deriche

PURPOSE In diffusion MRI, a technique known as diffusion spectrum imaging reconstructs the propagator with a discrete Fourier transform, from a Cartesian sampling of the diffusion signal. Alternatively, it is possible to directly reconstruct the orientation distribution function in q-ball imaging, providing so-called high angular resolution diffusion imaging. In between these two techniques, ac...

2006
Andrei I. Holodny

Introduction: Functional MRI (fMRI) and diffusion tensor imaging (DTI) including diffusion tractography have allowed scientists to make great strides in understanding how the brain functions. However, these techniques have also have made possible advances in the clinical arena, which will be the focus of this presentation. We will address current and emerging applications of fMRI and DTI in the...

Journal: :Journal of Nuclear Science and Technology 1964

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