Results 81 to 90 of about 226,375 (294)

High spectral and spatial resolution X-ray transmission radiography and tomography using a Color X-ray Camera [PDF]

, 2014
High resolution X-ray radiography and computed tomography are excellent techniques for non-destructive characterization of an object under investigation at a spatial resolution in the micrometer range.
Boone, Matthieu, Cormode, David P, Dierick, Manuel, Garrevoet, Jan, Pauwels, Elin, Scharf, Oliver, Tack, Pieter, Van Hoorebeke, Luc, Van Loo, Denis, Vincze, Laszlo   +9 more
core   +2 more sources

CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao, Rong Li, Yu‐Xiang Jiao, Kai Ma, Hong‐Qi Yang, Zheng‐Yu Sun, Jie‐Wen Zhang, Shuai Chen   +7 more
wiley   +1 more source

Impacts of micro-size PbO on the gamma-ray shielding performance of polyepoxide resin

e-Polymers, 2023
A series of polyepoxide resins doped by lead oxide with low concentrations were fabricated in order to study the impacts of low PbO concentrations on the fabricated composites’ physical- and radiation-shielding properties.
Alorain Dalal A., Sayyed M. I., Almuqrin Aljawhara H., Mahmoud K. G.   +3 more
doaj   +1 more source

Elevated Connectivity During Language Processing Is Associated With Cognitive Performance in SeLECTS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Self‐Limited Epilepsy with Centrotemporal Spikes (SeLECTS) is associated with language impairments despite seizures originating in the motor cortex, suggesting aberrant cross‐network interactions. Here we tested whether functional connectivity in SeLECTS during language tasks predicts language performance.
Wendy Qi, Katharine Lee, Kerry C. Nix, Miguel Menchaca, Xiwei Shé, Lorelei Santa Maria, Wei Wu, Zihuai He, Fiona M. Baumer   +8 more
wiley   +1 more source

Evaluation of gamma-ray and neutron attenuation properties of some polymers

Nuclear Engineering and Technology, 2019
In the present work, we determined the gamma-ray attenuation characteristics of eight different polymers(Polyamide (Nylon 6) (PA-6), polyacrylonitrile (PAN), polyvinylidenechloride (PVDC), polyaniline (PANI), polyethyleneterephthalate (PET ...
M.R. Kaçal, F. Akman, M.I. Sayyed, F. Akman   +3 more
doaj   +1 more source

Microscopic Approach to Analyze Solar-Sail Space-Environment Effects

, 2008
Near-sun space-environment effects on metallic thin films solar sails as well as hollow-body sails with inflation fill gas are considered. Analysis of interaction of the solar radiation with the solar sail materials is presented.
Abramov, Berger, Bethe, Causey, Gregory L. Matloff, Hubbell, Janhunen, Jones, Kezerashvili, Kezerashvili, Kezerashvili, Koblik, Matloff, Matloff, McInnes, McInnes, Michalsky, Murphy, Obanian, Roman Ya. Kezerashvili, Salama, Strobl, Vulpetti   +22 more
core   +1 more source

High‐Resolution MRI Revealed Different Etiology‐Specific Associations With Cerebral Infarction in Adult Moyamoya Vasculopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐resolution MRI enables detailed assessment of intracranial vessel wall pathology in moyamoya vasculopathy. We aimed to classify adult moyamoya vasculopathy etiologies using high‐resolution MRI and to examine subtype‐specific associations between high‐resolution MRI features and ischemic infarction.
Guangsong Han, Jiachun Pan, Yuehui Hong, Xiaoyuan Fan, Ming Yao, Lixin Zhou, Yicheng Zhu, Feng Feng, Jun Ni   +8 more
wiley   +1 more source

Automated design of low complexity FIR filters [PDF]

, 1998
This paper considers the design of low complexity FIR filters. Complexity is reduced by constraining the filters to have integer coefficients, which can be efficiently implemented using primitive operator directed graphs (PODG).
Bull, DR, Redmill, DW
core   +2 more sources

Joint estimation of tissue types and linear attenuation coefficients for photon counting CT

Medical Physics, 2015
Purpose:Newly developed spectral computed tomography (CT) such as photon counting detector CT enables more accurate tissue‐type identification through material decomposition technique. Many iterative reconstruction methods, including those developed for spectral CT, however, employ a regularization term whose penalty transition is designed using pixel ...
Nakada, K., Taguchi, K., Fung, G.S.K., KENJI AMAYA   +3 more
openaire   +2 more sources

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