Results 71 to 80 of about 7,168,474 (339)

Diffusion coefficient and shear viscosity of rigid water models [PDF]

open access: yesJournal of Physics: Condensed Matter, 2012
We report the diffusion coefficient and viscosity of popular rigid water models: two non-polarizable ones (SPC/E with three sites, and TIP4P/2005 with four sites) and a polarizable one (Dang–Chang, four sites).
Sami Tazi   +5 more
semanticscholar   +1 more source

White Matter Microstructural Abnormalities in Neonatal Onset Genetic Epilepsy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Recent evidence indicates that epilepsy is associated with abnormal white matter. If seizures alter white matter, then the impact upon network function, epileptogenesis, and cognition could be pronounced in neonates undergoing rapid developmental myelination. Neonates with epilepsy due to nonstructural genetic causes provide a unique
Amanda G. Sandoval Karamian   +8 more
wiley   +1 more source

Parameter dependence of ballistic velocity in deterministic diffusion in the form of devil\u27s staircase

open access: yes, 2005
By using simple extended mapping models showing chaotic diffusion, nonperturbative non-Gaussian characteristics of diffusive motion are examined in the framework of the large deviation statistical theory.
Miyazaki, Syuji   +2 more
core   +1 more source

LEAST – SQUARES METHOD FOR ESTIMATING DIFFUSION COEFFICIENT

open access: yesInternational Journal of Industrial Engineering and Production Research, 2007
Determining the diffusion coefficient based on the solution of the linear inverse problem of the parameter estimation by using the Least-square method is presented.
Abdolsadeh Neisy
doaj  

Role of exponential apparent diffusion coefficient in characterizing breast lesions by 3.0 Tesla diffusion-weighted magnetic resonance imaging

open access: yesIndian Journal of Radiology and Imaging, 2017
Objective: To evaluate the role of exponential apparent diffusion coefficient (ADC) as a tool for differentiating benign and malignant breast lesions. Patients and Methods: This prospective observational study included 88 breast lesions in 77 patients ...
Shweta Kothari   +5 more
doaj   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers   +19 more
wiley   +1 more source

Modeling brain extracellular space from diffusion data [PDF]

open access: yes, 2007
The extracellular space (ECS) of the brain is a thin region surrounding each cell that is filled with a medium resembling cerebrospinal fluid and an unknown amount of extracellular matrix. The ECS is difficult to study but diffusion measurements based on
Nicholson, Charles
core   +1 more source

Apparent Diffusion Coefficient of Variation (ADCcv): A New Biomarker for Aggressiveness in Prostate Cancer?

open access: yesJournal of Urological Surgery, 2023
Objective: The aim of the study was to evaluate which apparent diffusion coefficient (ADC) parameter can predict the aggressiveness of prostate cancer in patients confirmed by radical prostatectomy specimens. Materials and Methods: Patients who underwent
Aylin Altan Kuş   +2 more
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright   +10 more
wiley   +1 more source

Ion diffusion coefficient measurements in nanochannels at various concentrations

open access: yes, 2014
Diffusion is one of the most fundamental properties of ionic transport in solutions. Here, we present experimental studies and theoretical analysis on the ion diffusion in nanochannels.
Xue JM   +8 more
core   +1 more source

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