Results 131 to 140 of about 389,631 (317)

Radiation pattern reconfigurable antenna for LTE applications [PDF]

open access: yes, 2018
This project proposes a radiation pattern reconfigurable antenna for LTE applications. Long Term Evolution (LTE) is an advanced system in the wireless telecommunication development. Compared to previous standards, LTE offers improved performance.
Kumar, Gorantla Dileep
core  

Radiation patterns of paraboloids

open access: yes, 1942
This report contains the results of a study of various methods of exciting paraboloids, made in an effort to obtain methods which would give usable radiation patterns and at the same time permit wobbling the beam for split-beam direction finding. The curves attached to this report give representative radiation patterns and much of the information ...
openaire   +1 more source

[18F]Fluorodeprenyl‐D2 PET as a Tool to Monitor Disease Activity in GAD65‐Ab Autoimmune Encephalitis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate [18F]fluorodeprenyl‐D2 ([18F]F‐DED) positron‐emission tomography (PET) imaging as a biomarker of disease activity in autoimmune encephalitis (AIE) associated with glutamic acid decarboxylase 65 (GAD65) antibodies. Methods [18F]F‐DED PET was performed in 25 GAD65‐AIE patients and 8 controls using dynamic (0–60 min) and ...
Julia S. Dorneich   +19 more
wiley   +1 more source

Efficient prediction method for broadband acoustic mode radiation from engine bypass ducts

open access: yes, 2011
High levels of broadband noise produced by modern high-bypass turbine engines have a significant impact on the environment. High performance computational numerical methods are now taking an active role in this research area.
Wu, Jun
core  

Radiation pattern of ultrasonic transducer with polymer-powder matching layer

open access: yes, 2020
© 2018 IEEE. The work is devoted to the study of the radiation pattern of the ultrasonic transducers. Transducers modified by deposition in the electrostatic field of a protective matching quarter-wave polymer-powder layer.
Fazlyyyakhmatov M.
core  

Evaluation of Kaiser Function-Based Linear Array Performance in Suppressing SLL and Its Experimental Approach

open access: yesIEEE Access
The power-weighted distribution method is used to satisfy radiation pattern requirements at a certain targeted sidelobe level (SLL) suppression. This article reports a detailed discussion of theoretical and experimental approaches for the application of ...
Hartuti Mistialustina   +2 more
doaj   +1 more source

RNA Sequencing Resolves Cryptic Pathogenic Variants in Mitochondrial Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mitochondrial diseases are the most common inherited metabolic disorders, characterized by pronounced clinical and genetic heterogeneity that complicates molecular diagnosis. Although DNA‐based sequencing approaches have become standard in genetic testing, up to half of patients remain without a definitive diagnosis.
Zhimei Liu   +21 more
wiley   +1 more source

Sound radiation from a generic bypass duct with bifurcations

open access: yes, 2008
The influence of bifurcations in an aero-engine bypass duct on noise radiation was investigated through high-order accurate three-dimensional numerical simulations.
Chen, X., Zhang, X., Huang, X.
core  

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

open access: yesAnnals 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   +8 more
wiley   +1 more source

Picosecond-domain radiation pattern measurement using fiber-coupled photoconductive antenna

open access: yes, 2001
The photoconductive terahertz measurement technique was used for measurement of the radiation pattern from thick metal slits. Picosecond pulses were generated and detected by an ultrafast optoelectronic technique using a femtosecond pulse laser and a ...
Lee, J, Lee, H, Kim, Joungho
core  

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