Results 31 to 40 of about 3,127,055 (267)

Diffusion of volatile organic chemicals in porous media. 2. alcohol/templated porous carbon systems [PDF]

open access: yes, 2006
The aim of the present report was to measure the diffusion coefficients, modes of transport, and activation energies of some alcohols into templated porous carbons.
Sakintuna, Billur   +2 more
core   +1 more source

Self-diffusion of polymers in cartilage as studied by pulsed field gradient NMR [PDF]

open access: yes, 2002
Pulsed field gradient (PFG) nuclear magnetic resonance (NMR) was used to investigate the self-diffusion behaviour of polymers in cartilage. Polyethylene glycol and dextran with different molecular weights and in different concentrations were used as ...
Arnold, K.   +5 more
core   +2 more sources

Diffusion on diffusing particles

open access: yesDiffusion Fundamentals, 2007
We investigate random walk of a particle constrained on cells, where cells behave as a lattice gas on a two dimensional square lattice. By Monte Carlo simulation, we obtain the mean first passage time of the particle as a function of the density and temperature of the lattice gas. We find that the transportation of the particle becomes anomalously slow
Imoto, Yu, Odagaki, Takashi
openaire   +2 more sources

Implementation of a Pilot Test mHealth Application to Improve Home Based Newborn Care (IMNCI) in Remote Tribal Gujarat [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2018
India has adopted a neonatal component to Integrated Management of Childhood Illness (IMCI), creating IMNCI. In the era of Digital India initiatives, we reviewed the appropriateness of an electronic IMNCI/IMCI, the barriers to adherence and potential of ...
Kandarp Talati   +2 more
doaj   +1 more source

Fractal Stochastic Processes on Thin Cantor-Like Sets

open access: yesMathematics, 2021
We review the basics of fractal calculus, define fractal Fourier transformation on thin Cantor-like sets and introduce fractal versions of Brownian motion and fractional Brownian motion. Fractional Brownian motion on thin Cantor-like sets is defined with
Alireza Khalili Golmankhaneh   +1 more
doaj   +1 more source

Detection of Bacteria-Induced Early-Stage Dental Caries Using Three-Dimensional Mid-Infrared Thermophotonic Imaging

open access: yesBioengineering, 2023
Tooth decay, or dental caries, is a widespread and costly disease that is reversible when detected early in its formation. Current dental caries diagnostic methods including X-ray imaging and intraoral examination lack the sensitivity and specificity ...
Robert Welch   +7 more
doaj   +1 more source

Diffusivity determination in nonlinear diffusion

open access: yesEuropean Journal of Applied Mathematics, 1991
We are concerned with the problem of determining the diffusivity D of a diffusion process governed by the equation ut = (Dux)x', under the assumption that D depends on u. The main point consists in the observation that there exist solutions of travelling-wave type and that the dependence D = D(u) can be explicitly found in terms of the profile of such ...
Manuel Elgueta   +2 more
openaire   +3 more sources

Diffusion, super-diffusion and coalescence from single step [PDF]

open access: yes, 2007
From the exact single step evolution equation of the two-point correlation function of a particle distribution subjected to a stochastic displacement field $\bu(\bx)$, we derive different dynamical regimes when $\bu(\bx)$ is iterated to build a velocity ...
Andrea Gabrielli   +12 more
core   +1 more source

The Diffusion of the Legitimate and the Diffusion of Legitimacy [PDF]

open access: yesSociological Science, 2014
This article models the implications of innovations being nested within categories. In effect, social actors assess the legitimacy of innovations vis-à-vis conformity to categories such that a sufficiently legitimate innovation may be adopted without direct reference to the behavior of peers.
openaire   +5 more sources

Evaluating time domain reflectometry and coaxial impedance sensors for soil observations by the U.S. Climate Reference Network

open access: yesVadose Zone Journal, 2020
The objective of this study was to evaluate the performance of two commercial‐grade electromagnetic sensors in measuring soil water content for the U.S. Climate Reference Network (USCRN). One sensor was a 50‐MHz coaxial impedance dielectric sensor (model
Timothy B. Wilson   +8 more
doaj   +1 more source

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