منابع مشابه
Solutions of diffusion equation for point defects
An analytical solution of the equation describing diffusion of intrinsic point defects in semiconductor crystals has been obtained for a one-dimensional finite-length domain with the Robin-type boundary conditions. The distributions of point defects for different migration lengths of defects have been calculated. The exact analytical solution was used to verify the approximate numerical solutio...
متن کاملInvestigating effects from restricted diffusion in multi-component diffusion data
We have investigated model systems in which effects from non-Gaussian restricted diffusion could be separated from effects caused by multiple diffusion coefficients. We applied various models to analyze the experimental data. An analysis based on multiexponential models does not account correctly for effects caused by restricted diffusion in a system with multiple compartments. However, separat...
متن کاملDelayed restricted diffusion in carbon monoxide leukoencephalopathy.
to a wide range of neurological symptoms, ranging from headaches, dizziness and altered mental status to coma. The basis for this is thought to be hypoxia. Carbon monoxide competes with oxygen for binding to hemoglobin (Hb) and once bound, shifts the oxyhemoglobin dissociation curve to the left, thus impairing off-loading of oxygen molecules, leading to hypoxia . A sizable minority of CO poison...
متن کاملAutocatalytic reaction-diffusion processes in restricted geometries
We study the dynamics of a system made up of particles of two different species undergoing irreversible quadratic autocatalytic reactions: A + B → 2A. We especially focus on the reaction velocity and on the average time at which the system achieves its inert state. By means of both analytical and numerical methods, we are also able to highlight the role of topology in the temporal evolution of ...
متن کاملRestricted diffusion in vanishing white matter.
OBJECTIVE To investigate the occurrence of restricted diffusion in vanishing white matter, the affected structures,the time of occurrence in the disease course, and the histopathologic correlate. DESIGN Retrospective observational study. PATIENTS Forty-six patients with vanishing white matter. SETTING VU University Medical Center. MAIN OUTCOME MEASURES We evaluated all available diffusi...
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ژورنال
عنوان ژورنال: AIChE Journal
سال: 1973
ISSN: 0001-1541,1547-5905
DOI: 10.1002/aic.690190220