Results 41 to 50 of about 67,929 (263)

Clinical Practice Guideline for Evaluation and Management of Peripheral Nervous System Manifestations in Sjögren's Disease

open access: yesArthritis Care &Research, EarlyView.
Objective Sjögren's disease is an autoimmune disorder that can impact multiple organ systems, including the peripheral nervous system (PNS). PNS manifestations, which can exist concurrently, include mononeuropathies, polyneuropathies, and autonomic nervous system neuropathies.
Anahita Deboo   +88 more
wiley   +1 more source

An offset tone based gain stabilization technique for mixed-signal RF measurement systems

open access: yes, 2015
This paper describes a gain stabilization technique for a RF signal measurement system. A sinusoidal signal of known amplitude, phase and close enough in frequency is added to the main, to be measured RF signal at the input of the analog section.
Agarwal, Vivek   +5 more
core   +1 more source

Diagnostic Use of Testing for Novel Murine Autoantibodies for Sjögren Disease in the Rheumatology Outpatient Setting

open access: yesArthritis Care &Research, EarlyView.
Objective The goal was to assess the diagnostic performance of three novel autoantibodies (NA) for Sjögren disease (SjD) by comparing NA prevalence in patients with SjD, other autoimmune rheumatic diseases (ARDs), nonspecific chronic sialadenitis (CS), and controls.
Chadwick R. Johr   +5 more
wiley   +1 more source

Analyzing the Automatic Power Level Control Effect of a Signal Generator in RF Power Sensor Calibration by a Direct Comparison Transfer Method and a Millimeter Wave Application

open access: yesSensors
Most calibration laboratories prefer the Direct Comparison Transfer Method (DCTM) for a reliable and accurate calibration of power sensors in the radio frequency (RF) scope.
Erkan Danaci
doaj   +1 more source

5G Positioning Reference Signal Configuration for Integrated Terrestrial/Non-Terrestrial Network Scenario [PDF]

open access: yes, 2023
peer reviewedThe Fifth Generation (5G) New Radio offers a new Positioning, Navigation, and Timing (PNT) service with larger signal bandwidth and higher frequency carriers than previous generations, delivering more accurate measurements. This allows other
GONZÁLEZ GARRIDO, Alejandro   +2 more
core   +1 more source

Differential Item Functioning on the Patient Health Questionnaire 8 by Disease Subtype, Language, Sex, and Age Among People With Systemic Sclerosis: A Scleroderma Patient‐Centered Intervention Network Cohort Study

open access: yesArthritis Care &Research, EarlyView.
Objective Somatic items used in depression assessments can potentially overlap with symptoms related to physical illness, including systemic sclerosis (SSc). No studies have looked at whether somatic depression items may be influenced by diffuse versus limited SSc disease subtypes, which are associated with varying degrees of symptom presentation.
Sophie Hu   +110 more
wiley   +1 more source

A Coherent Dual-Band FMCW Photonic Radar Based on a Synchronized FMCW Optoelectronic Oscillator

open access: yesIEEE Access
This paper proposes and experimentally demonstrates a novel coherent radar architecture based on a synchronized frequency-modulated continuous-wave optoelectronic oscillator.
Youngseok Bae, Minji Hyun, Joonyong Park
doaj   +1 more source

A Motion Compensation Method for Shipborne HFSWR by Using Dual Reference RF Signals Generated Onshore

open access: yesRemote Sensing, 2022
The echo of shipborne high-frequency surface wave radar (HFSWR) is modulated by six-degrees-of-freedom (6-DOF) motion, affecting the detection of the target and the remote sensing of ocean surface dynamics parameters.
Maorong Chen   +6 more
doaj   +1 more source

SAW Sensors and RF ID Tags without a Reference Channel

open access: yes, 2011
A new approach for design of SAW sensors and tags is discussed. We propose to use a two-path SAW oscillator as a sensor. This structure does not require a reference channel as a traditional SAW sensor does.
A. Pavani Filho   +3 more
core   +1 more source

FBG sensor interrogation based on RF signal measurement

open access: yes, 2008
19th International Conference on Optical Fibre Sensors, Perth, WA, 15-18 April 2008A novel interrogation method for optical fiber Bragg grating (FBG) sensors has been proposed by converting the change of the FBG wavelength into the phase difference ...
Lu, C   +9 more
core   +1 more source

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