Results 71 to 80 of about 586,973 (295)

Measurement of concentration dependency of diffusion coefficient in ethanol-water solution under different storage condition

Journal of Fluid Science and Technology, 2018
This study focuses on the diffusion phenomena in ethanol-water systems. The diffusion coefficient of ethanol-water systems has a strong concentration dependency originating from intermolecular interactions and the association of molecules in solution ...
Atsuki KOMIYA, Kengo SATO, Junnosuke OKAJIMA   +2 more
doaj   +1 more source

Giant Colloidal Diffusivity on Corrugated Optical Vortices

, 2006
A single colloidal sphere circulating around a periodically modulated optical vortex trap can enter a dynamical state in which it intermittently alternates between freely running around the ring-like optical vortex and becoming trapped in local potential
C. Chatfield, David G. Grier, H. He, H. Risken, K. T. Gahagan, Sang-Hyuk Lee   +5 more
core   +1 more source

Meningovascular Inflammation in Cerebral Amyloid Angiopathy‐Related Cortical Superficial Siderosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The role of inflammation in cortical superficial siderosis (cSS), a marker of cerebral amyloid angiopathy (CAA) linked to high hemorrhage risk, is unclear. We examined 15 patients with cSS using 3 T post‐contrast vessel wall MRI (VWI) and CSF analysis.
Philipp Arndt, Eya Khadhraoui, Sebastian J. Müller, Katja Neumann, Hendrik Mattern, Sven G. Meuth, Valentina Perosa, Andreas Charidimou, Stefanie Schreiber   +8 more
wiley   +1 more source

Thermodynamic properties and drying kinetics of Bauhinia forficata Link leaves

Revista Brasileira de Engenharia Agrícola e Ambiental
The aim of this study was to determine the effective diffusion coefficient and the thermodynamic properties of Bauhinia forficata Link leaves, considering two forms of thickness measurements and to describe the process by fitting mathematical models. The
Fernanda P. da Silva, Valdiney C. Siqueira, Elton A. S. Martins, Fábio M. N. Miranda, Rogerio M. Melo   +4 more
doaj   +1 more source

Quasi-deterministic transport of Brownian particles in an oscillating periodic potential

, 2010
We consider overdamped Brownian dynamics in a periodic potential with temporally oscillating amplitude. We analyze the transport which shows effective diffusion enhanced by the oscillations and derive approximate expressions for the diffusion coefficient.
Felix Müller, Lutz Schimansky-Geier, Pawel Romanczuk, R. L. Stratonovich, V. S. Anishchenko   +4 more
core   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

Thin-Layer Drying Model, Drying Rate, and Effective Water Diffusion Coefficient of Pelleted Feed

International Journal of Chemical Engineering
In this study, classic thin-layer drying models such as the Page model, Verma model, and Two-term model were used to fit the thin-layer drying data of feed.
Wei Wang, Jiyuan Chen, Nan Jin, Hongying Wang, Liangju Wang, Junhua Wu   +5 more
doaj   +1 more source

Correlation for the Effective Gas Diffusion Coefficient in Carbon Paper Diffusion Media

Energy & Fuels, 2009
The understanding of mass transport limitations in polymer electrolyte membrane (PEM) fuel cells is crucial in the research and progress of this technology. The structure of the components, specifically the as diffusion layer (GDL), of PEM fuel cells, is complex. Thus, for the purpose of simulating mass transport in the GDL, the effect of the structure
Zamel, Nada, Li, Xianguo, Shen, Jun
openaire   +3 more sources

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Escape Times in Fluctuating Metastable Potential and Acceleration of Diffusion in Periodic Fluctuating Potentials

, 2004
The problems of escape from metastable state in randomly flipping potential and of diffusion in fast fluctuating periodic potentials are considered. For the overdamped Brownian particle moving in a piecewise linear dichotomously fluctuating metastable ...
Agudov, Agudov, Alexander A. Dubkov, Balakrishnan, Bernardo Spagnolo, Dan, Dayan, Dubkov, Festa, Fiasconaro, Lindner, Mahato, Mahato, Malakhov, Mantegna, Mantegna, Matsumoto, Medvedev, Mielke, Mielke, Nikolay V. Agudov, Reimann, Reimann, Wackerbauer, Wackerbauer, Weaver, Xie, Zürcher   +27 more
core   +2 more sources