Tower impulse grounding resistance measurement based on multiple frequency impedance
IET Generation, Transmission and Distribution, 2023 Tower impulse grounding resistance is important for judging the lightning protection performance of transmission lines. Therefore, it is significant to accurately measure the tower impulse grounding resistance. Existing measurement methods mainly contain
Yihua Dan, Yongye Wu
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Respiratory impedance measured using impulse oscillometry in a healthy urban population [PDF]
ERJ Open Research, 2021 This study derives normative prediction equations for respiratory impedance in a healthy asymptomatic urban population using an impulse oscillation system (IOS).
Kenneth I. Berger +9 more
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IET Generation, Transmission and Distribution, 2023 The impulse grounding impedance of tower grounding device is one of the important factors in the lightning protection evaluation of transmission line. The impulse characteristic test of the actual tower grounding device under lightning was rarely carried
Yongcong Wu, Hansheng Cai
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Transient impedance of grounding system with impulse superimposed sinewave
ENP Engineering Science Journal, 2021 Investigating the transient performance of grounding systems subject to lightning (impulse or impulse superimposed sinewave) is valuable for protecting the power system and maintaining the system operation.
Sherif Ghoneim +2 more
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Time-Domain Analysis of Rectangular Pulse Response in Capacitive Impedance Sensing Using Capacitively Coupled Contactless Electrodes [PDF]
SensorsImpulse-based impedance sensing with capacitively coupled electrodes is introduced as a fast, non-contact, and simplified complementary method to conventional capacitive impedance measurements.
Damian Wanta +8 more
doaj +2 more sources
Chronic rhinosinusitis association with small airway disease: Inflammatory biomarkers and lung function using impulse oscillometry [PDF]
Brazilian Journal of OtorhinolaryngologyObjective: This study aimed to evaluate the correlation between CRS-related biomarkers and disease severity with spirometric and impulse oscillometry parameters in patients with and without asthma.
Mariana Dalbo Contrera Toro +6 more
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Respiratory mechanics: modelling, measurement and clinical applications—a review [PDF]
BioMedical Engineering OnLineThe mechanical properties of the airways significantly impact respiration, and estimating respiratory mechanics provides important insights for diagnosing and monitoring respiratory diseases, such as asthma and chronic obstructive pulmonary disease. Here,
Anuva Chowdhury, Mathias Baumert
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Time–Frequency Respiratory Impedance Maps Enable Within-Breath Deep Learning for Small Airway Dysfunction Identification [PDF]
BioengineeringSmall airway dysfunction (SAD) is an early functional abnormality associated with multiple chronic airway diseases. However, clinical assessment often relies on spirometry-based indices, which require forced maneuvers and are sensitive to subject effort,
Dongfang Zhao +9 more
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Use of Impulse Oscillometry in Patients with Chronic Obstructive Pulmonary Disease [PDF]
Thoracic Research and PracticeOBJECTIVE: Although spirometry is a standard diagnostic tool for obstructive lung diseases, it is rarely performed, and the quality of basic spirometry is low in many countries. The impulse oscillometry system (IOS) is a non-invasive method that requires
Burcu Öztürk Şahin, Nurdan Köktürk
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Modeling of different tower grounding systems using hybrid continuous circuit-trapezoidal integration method [PDF]
Serbian Journal of Electrical Engineering, 2021 In order to protect the transmission lines against lightning strikes, it is important to investigate the tower grounding system. In this paper, a recent method called hybrid continuous circuit-trapezoidal integration method is used to calculate ...
Asadpourahmadchali Mohammadbagher +2 more
doaj +1 more source