Results 41 to 50 of about 3,868,967 (292)

Tutorial on diffuse light transport

open access: yesJournal of Biomedical Optics, 2008
A tutorial introduction to diffuse light transport is presented. The basic analytic equations of time-resolved, steady-state and modulated light transport are introduced. The perturbation method for handling slight heterogeneities in optical properties is outlined. The treatment of boundary conditions such as an air/tissue surface is described.
Steven L. Jacques, Brian W. Pogue
openaire   +2 more sources

Oxygen diffusion through perovskite membranes [PDF]

open access: yes, 2005
The oxygen permeation flux through the perovskite membrane made of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) has been measured as a function of both the temperature and the oxygen pressure gradient across the membrane.
Caro, Jürgen   +3 more
core   +1 more source

Fractional Transport of Photons in Deterministic Aperiodic Structures

open access: yesScientific Reports, 2017
The propagation of optical pulses through primary types of deterministic aperiodic structures is numerically studied in time domain using the rigorous transfer matrix method in combination with analytical fractional transport models.
Luca Dal Negro, Sandeep Inampudi
doaj   +1 more source

Analysis of gas transport behavior in organic and inorganic nanopores based on a unified apparent gas permeability model

open access: yesPetroleum Science, 2019
Different from the conventional gas reservoirs, gas transport in nanoporous shales is complicated due to multiple transport mechanisms and reservoir characteristics.
Qi Zhang   +4 more
doaj   +1 more source

Molecular diffusion under confinement [PDF]

open access: yes, 2005
With reference to molecular transport in manifold media of porous structure, a survey is given on the ample spectrum of diffusion phenomena under confinement.
Kärger, Jörg
core   +1 more source

A one-dimensional transport model for multi-component solute in saturated soil

open access: yesWater Science and Engineering, 2018
A modified multi-component solute diffusion equation described with diffusion flux was derived in detail based on the classical Maxwell-Stefan diffusion theory.
Zhi-hong Zhang   +3 more
doaj   +1 more source

Drift phase resolved diffusive radiation belt model: 2. implementation in a case of random electric potential fluctuations

open access: yesFrontiers in Astronomy and Space Sciences, 2023
In the first part of this work, we highlighted a drift-diffusion equation capable of resolving the magnetic local time dimension when describing the effects of trapped particle transport on radiation belt intensity.
Solène Lejosne   +2 more
doaj   +1 more source

Cube-based diffusion algorithm [PDF]

open access: yes, 2007
We study molecular diffusion in (linear) nanopores with different types of roughness in the so-called Knudsen regime. Knudsen diffusion represents the limiting case of molecular diffusion in pores, where mutual encounters of the molecules within the free
Kärger, Jörg   +3 more
core   +1 more source

Lorlatinib‐Containing Therapy for MYCN‐Amplified, ALK‐Mutated Neuroblastoma With Bulky Leptomeningeal Relapse: A Case Report

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Central nervous system (CNS) relapse of neuroblastoma carries a poor prognosis, and craniospinal irradiation (CSI) poses substantial long‐term toxicity in young children. We report a toddler with MYCN‐amplified neuroblastoma harboring somatic ALK R1275Q who developed extensive leptomeningeal relapse with paraplegia.
Jinwoo Kim   +11 more
wiley   +1 more source

Exploration of operating conditions on oxygen mass transport resistance and performance of PEM fuel cells: Effects of inlet gas humidification

open access: yesElectrochemical Science Advances, 2023
This work presents comprehensive studies of inlet gas humidification on O2 mass transport and proton exchange membrane fuel cell performance to obtain a better understanding of transport processes at a cathode gas diffusion electrode.
Tatyana V. Reshetenko, Bonnie L. Ben
doaj   +1 more source

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