Results 91 to 100 of about 7,168,474 (339)

NMR diffusion measurements of complex systems [PDF]

open access: yes, 2009
The pulsed gradient spin-echo nuclear magnetic resonance experiment is a powerful tool for studying the constitution and structure of complex systems (e.g., polydisperse systems and porous media).
Stait-Gardner, Tim   +4 more
core   +1 more source

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram   +3 more
wiley   +1 more source

Anticoagulation Treatment Response Among Phenotypic ESUS Clusters: Evidence From CASPR

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate treatment effect heterogeneity across phenotypic clusters of patients with cryptogenic embolic stroke using causal inference methods. Methods From a retrospective, multicenter cohort of patients with cryptogenic embolic stroke, we estimated the treatment effect of anticoagulation versus antiplatelet therapy in patients ...
Elena Badillo Goicoechea   +53 more
wiley   +1 more source

Wet and dry cup test with hygroscopic materials: what do we really measure?

open access: yesInterPore Journal
Wet and dry cup tests are widely used to characterize the vapor permeability (or the apparent vapor diffusion coefficient) of construction materials. From a theoretical approach, we examined the transport characteristics of such tests in detail.
Yuliang Zou   +3 more
doaj   +1 more source

Investigation of Complement Activation and Cytokine Signatures in AQP4+ NMOSD, MOGAD, and MS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Aquaporin‐4‐IgG seropositive neuromyelitis optica spectrum disorder (AQP4+ NMOSD), myelin oligodendrocyte glycoprotein antibody‐associated disease (MOGAD), and multiple sclerosis (MS) are pathophysiologically distinct neuroinflammatory disorders. Complement activation is a major mechanism of injury in AQP4+ NMOSD, whereas its role in
Angeliki G. Filippatou   +23 more
wiley   +1 more source

Factors affecting diffusion coefficient of the hydroxide ion in aqueous tetraalklylammonium nitrate solutions

open access: yes, 1994
The effect of OH concentration on its diffusion coefficient in aqueous Me4NN03 and BU4NN03 solutions at total ionic strength of 0.50 mol dm-3 was studied. The diffusion coefficient was found to increase from a Iow value and reached a steady-state.
McDougall, A.O., Al-Mayouf, A.M.
core  

Nonequilibrium field-induced phase separation in single-file diffusion [PDF]

open access: yes, 2006
Using an analytically tractable lattice model for reaction-diffusion processes of hard-core particles we demonstrate that under nonequilibrium conditions phase coexistence may arise even if the system is effectively one-dimensional as e.g. in the channel
Tabatabaei, Fatemeh, Schütz, Gunter M.
core   +1 more source

Dynamic Changes in Serum Glial Fibrillary Acidic Protein Levels Predicts Early Neurological Deterioration After Intravenous Thrombolysis in Minor Stroke

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Minor strokes may be associated with early neurological deterioration (END) and disabilities. The objective was to investigate the role of serum glial fibrillary acidic protein (GFAP) levels in predicting END. Methods Data originated from a multicenter cohort study conducted prospectively.
Jie Zhou   +45 more
wiley   +1 more source

Heroes and highlights in the history of diffusion [PDF]

open access: yes, 2009
The science of diffusion had its beginnings in the nineteenth century, although the blacksmiths and metal artisans of antiquity already, used diffusion phenomena to make such objects as hardened iron swords and gilded bronze wares.
Mehrer, Helmut, Stolwijk, Nicolaas A.
core   +1 more source

Output - With Diffusion, Uniform Density, Diffusion Coefficient = 1e1, Time = 100

open access: yes, 2021
Output - With Diffusion, Uniform Density, Diffusion Coefficient = 1e1, Time ...
Emma Jarvis (11261376)
core   +1 more source

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