Results 121 to 130 of about 18,665 (298)
Open resonators for the measurement of permittivity
Electronics Letters, 1978 A small modification to Yu's model leads to more consistent values of permittivity. The difference is insignificant for confocal resonators but is appreciable if the resonator is very short or very long.
openaire +1 more source
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 +11 more
wiley +1 more source
Advancing Age Modulates Associations Between Cognitive Impairment and Brain Volumes in Early MS
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Introduction Cognitive impairment is common in multiple sclerosis (MS), but manifestations following the first demyelinating event are relatively unexplored. We investigated cross‐sectional associations between magnetic resonance imaging (MRI)–derived brain volumes and the presence of cognitive impairment outcomes five years after the first ...
Piriyankan Ananthavarathan +14 more
wiley +1 more source
Double open resonator for localized non-contact acoustic testing
, 2004 There exist two concepts of open resonators that can be combined into a device for acoustic non-destructive testing. The device is non-contact and based on the fact that an airgap between a transducer surface and the test object can be set into ...
Hedberg, Claes, Haller, Kristian
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, 2017 Design of the fourth order microstrip filter with high selectivity is presented in this paper. Proposed microstrip filter circuit is carried out using the microstrip open loop resonators with a novel loading element consisting of interdigital unit cells.
Ozturk Ozdemir, Pinar, Karpuz, Ceyhun
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Central nervous system (CNS) inflammatory demyelinating syndromes, including multiple sclerosis (MS), aquaporin‐4 antibody–positive neuromyelitis optica spectrum disorder (AQP4 + NMOSD), and myelin oligodendrocyte glycoprotein (MOG) antibody–associated disease (MOGAD), occasionally overlap.
Bade Gulec +6 more
wiley +1 more source
Study of capacitance effect for dual open circuit band-stop resonator / Ahmad Amzar Abd Rashid [PDF]
, 2011 Microstrip Dual Open Circuit Stub filters is fabricated using FR4 substrate to investigate the effect of capacitance in series with the resonator stub. The FR4 substrate thickness is 1.6mm and has a relative dielectric constant of 5.4. The capacitance is
Abd Rashid, Ahmad Amzar
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To evaluate the efficacy and safety of ofatumumab in patients with myelin oligodendrocyte glycoprotein antibody–associated disease (MOGAD), and compare it with rituximab. Methods We conducted a single–center, observational study including 22 MOGAD patients treated with ofatumumab and 21 treated with rituximab.
Yuxin Fan +5 more
wiley +1 more source
Miniature distributed filters for software re-configurable radio applications
, 2002 Variable preselection filters will be an important component of any software re-configurable radio design. To be of practical use, such a filter should occupy a minimum of board area in any transceiver layout.
J. R. Macleod +7 more
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Measurement of Nonplanar Dielectric Samples Using an Open Resonator [PDF]
, 1987 Conventional microwave methods for measuring permittivity often utilize samples in flat sheet form. In practice, however, it is sometimes desirable to measure samples having curved surfaces, for example, parts of lenses or small radomes.
Chan, W.F.P., Chambers, B.
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