Results 71 to 80 of about 154,923 (294)

Choroid Plexus Enlargement and USPIO‐Based Inflammatory Feature in Cerebral Small Vessel Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The choroid plexus (CP) is a key component of the blood–cerebrospinal fluid barrier (BCSFB), but its mechanism of action in cerebral small vessel disease (CSVD) remains unclear. This study investigated CP volume (CPV) alterations and their association with conventional imaging markers in CSVD and explored the underlying role of ...
Yongqiang Qu, Xiaoning Ren, Cuihua Fan, Chun Li, Lijie Zhang, Zaiqiang Zhang, Shaowu Li, Zhongmeng Lai, Bin Cai, Ying Fu, Yi Lin, Zhibao Zhu   +11 more
wiley   +1 more source

The current-voltage relationship revisited: exact and approximate formulas with almost general validity for hot magnetospheric electrons for bi-Maxwellian and kappa distributions [PDF]

Annales Geophysicae, 1998
We derive the current-voltage relationship in the auroral region taking into account magnetospheric electrons for the bi-Maxwellian and kappa source plasma distribution functions.
P. Janhunen, P. Janhunen, A. Olsson
doaj   +1 more source

Kaniadakis Entropy Leads to Particle–Hole Symmetric Distribution

Entropy, 2022
We discuss generalized exponentials, whose inverse functions are at the core of generalized entropy formulas, with respect to particle–hole (KMS) symmetry.
Tamás S. Biró
doaj   +1 more source

[kappa]1 Receptor mRNA Distribution in the Rat CNS: Comparison to [kappa] Receptor Binding and Prodynorphin mRNA

, 1994
Three opioid receptor types have been identified in the CNS and periphery that are referred to as [mu], [delta], and [kappa]. The present study examines the mRNA distribution of the [kappa]1 receptor in the rat brain and compares it to the distribution ...
Mansour, Alfred, Meng, Fan, Fox, Charles A., Akil, Huda, Watson, Stanley J.   +4 more
core   +1 more source

A Nonextensive Entropy Approach to Kappa-Distributions

Astrophysics and Space Science, 2002
Most astrophysical plasmas are observed to have velocity distribution functions exhibiting non-Maxwellian suprathermal tails. The high energy particle populations are accurately represented by the family of kappa-distributions where the use of these distributions has been unjustly criticized because of a perceived lack of theoretical justification.
openaire   +2 more sources

Comprehensive Assessment of Arterial, Tissue, and Venous Collaterals for Evaluating the Infarct Growth Rate: The Multimodal Collateral Score

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Collaterals are crucial factors that influence the infarct growth rate (IGR). We aimed to determine whether a comprehensive multimodal collateral score (MCS), incorporating collateral assessment at the arterial, tissue, and venous levels, is associated with functional independence and provides incremental prognostic value over ...
Giorgio Busto, Umberto Pensato, Ilaria Casetta, Giorgio U. Marcello, Angelo Barra, Anna Poggesi, Edoardo Carlesi, Sara Mancini, Andrea Ginestroni, Vittorio Miele, Alessandro Padovani, Andrea Morotti, Enrico Fainardi   +12 more
wiley   +1 more source

The Four-Parameter Kappa Distribution in Prediction of Standardized Precipitation Index [PDF]

علوم و مهندسی آبیاری, 2012
The standardized precipitation index (SPI) isused vastly for drought monitoring. Among the many of drought indices, theusing of SPI for drought events in various time scales is more important.
Y. Hassanzadeh, A. Abdi Kordani
doaj  

Characterizing cometary electrons with kappa distributions [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractThe Rosetta spacecraft has escorted comet 67P/Churyumov‐Gerasimenko since 6 August 2014 and has offered an unprecedented opportunity to study plasma physics in the coma. We have used this opportunity to make the first characterization of cometary electrons with kappa distributions.
Broiles, T. W., Livadiotis, G., Burch, J.L., Chae, K., Clark, G., Cravens, T.E., Davidson, R., Eriksson, A., Frahm, R.A., Fuselier, S, Goldstein, J., Goldstein, R., Henri, Pierre, Madanian, H., Mandt, K., Mokashi, P., Pollock, C., Rahmati, A., Samara, M., Schwartz, S. J.   +19 more
openaire   +3 more sources

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Kappa Distribution Function Effects on Landau Damping in Electrostatic Vlasov Simulation

Terrestrial, Atmospheric and Oceanic Sciences, 2013
The non-thermal high-energy electron effects on Langmuir wave-particle interaction are investigated using an initial value approach. A Vlasov-Poisson simulation is employed based on the splitting scheme by Cheng and Knorr (1976).
Yue-Hung Chen, Yasutaro Nishimura, Chio-Zong Cheng   +2 more
doaj   +1 more source