Results 21 to 30 of about 799,107 (315)

Research on large-capacity impulse test technology for distribution transformer based on energy storage intelligent power

Energy Reports, 2022
Large-capacity impulse test of distribution transformer requires a large amount of instantaneous energy, while the impulse mode of conventional dedicated high-voltage line and generator requires synchronous switch, adjusted impedance, generator, etc ...
Bo Niu, Xutao Wu, Jiaying Yu, Hong Wu, Weifeng Liu   +4 more
doaj   +1 more source

High-flow nasal cannula improves respiratory impedance evaluated by impulse oscillometry in chronic obstructive pulmonary disease patients: a randomised controlled trial

Scientific Reports, 2022
Non-pharmacological treatment with high-flow nasal cannula (HFNC) may play a vital role in treatment of patients with chronic obstructive pulmonary disease (COPD).
Yen-Liang Kuo, Chen-Lin Chien, H. Ko, H. Lai, Tzu-Lung Lin, L. Lee, Chih-Yueh Chang, Hsiang-Shi Shen, Chia-Chen Lu   +8 more
semanticscholar   +1 more source

Reference values of impulse oscillometric lung function indices in adults of advanced age. [PDF]

, 2013
Impulse oscillometry (IOS) is a non-demanding lung function test. Its diagnostic use may be particularly useful in patients of advanced age with physical or mental limitations unable to perform spirometry.
Wichmann, Heinz-Erich, Rudolf A. Jörres, Margit Heier, Rudolf A. Jörres (340115), Behr, Jürgen, Holle, R., H.-Erich Wichmann (72009), H.-Erich Wichmann, Karrasch, S., Huber, R.M., Wichmann, H.-E., Rolf Holle, Rudolf M. Huber (412835), Nowak, Dennis, Peters, Annette, Joachim Heinrich (60421), Stefan Karrasch, Rudolf A Jörres, Rolf Holle (262610), KORA Study Group, Annette Peters (62601), Schulz, H., Holle, Rolf, Heier, M., Karrasch, Stefan, Annette Peters, Jürgen Behr (272687), Nowak, D., Holger Schulz, Dennis Nowak, Schulz, Holger, Peters, A., Huber, Rudolf M., Joachim Heinrich, Claudia Flexeder, Heinrich, Joachim, Rudolf M. Huber, H-Erich Wichmann, Claudia Flexeder (412834), Dennis Nowak (412836), Jürgen Behr, Heinrich, J., Rudolf M Huber, Margit Heier (200535), Watz, Henrik, Flexeder, Claudia, Behr, J., Flexeder, C., Stefan Karrasch (412837), Holger Schulz (13022), Jörres, R.A., Heier, Margit, Jörres, Rudolf A., Wichmann, H.-Erich   +53 more
core   +1 more source

Insights on Oscillations and Impulses in Variable Impedance Control

, 2022
Operational-space impedance control allows to assign a mass-damper-spring (MDS) behavior to the end effector of a robotic manipulator. This aids resilience when interactions with the environment or humans are expected. While changing the virtual mass is not always practicable since it requires using precise force/torque sensors, varying the stiffness ...
Simonini, Giorgio, Colomba, Rachele Nebbia, Sammarco, Chiara, Angelini, Franco, Bicchi, Antonio, Pollayil, Mathew Jose   +5 more
openaire   +1 more source

Importance of impulse calibrator output impedance and method of all-waveform compensation

, 2023
The influence of the impulse calibrator output impedance on the measured waveform is often ignored because of the rather limited bandwidth of lightning and switching impulses and the short cable connection to the digitizer.
Hällström, Jari; id_orcid, Saadeddine, Hanane, Passon, Stephan, Meisner, Johann, Treyer, Patrick, Havunen, Jussi; id_orcid, Hammer, Urs   +6 more
core   +1 more source

Digital Impedance Emulator for Battery Measurement System Calibration

Sensors, 2021
Meaningful information on the internal state of a battery can be derived by measuring its impedance. Accordingly, battery management systems based on electrochemical impedance spectroscopy are now recognized as a feasible solutions for online battery ...
Francesco Santoni, Alessio De Angelis, Antonio Moschitta, Paolo Carbone   +3 more
doaj   +1 more source

Diagnostics of Corrosion Protection Potential for Electric Water Heaters [PDF]

MATEC Web of Conferences, 2019
The paper represents the mathematical model for diagnostics of the corrosion protection potential for the electric water heaters (EWH). The research objectives are the problem of determining the EWH corrosion protection technical condition during its ...
Martynyuk Valeriy, Liss Michał, Wilczarska Joanna   +2 more
doaj   +1 more source

A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites

Applied Sciences, 2021
To test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum ...
Fanxizi Liu, Qiang Gao, Hui Guo, Chenhong Lang, Jinhua Jiang, Yiping Qiu   +5 more
doaj   +1 more source

Investigations on the Performance of Various Horizontal Ground Electrodes

Energies, 2021
Experimental work on grounding systems has shown that the characteristics of grounding systems under high impulse conditions are different than those obtained at steady-state conditions.
Hanis Hamizah Hizamul-Din, Normiza Mohamad Nor, Nurul Nadia Ahmad, Nur Farahi Idris, Azwan Mahmud   +4 more
doaj   +1 more source

Pulmonary Functions and Inflammatory Biomarkers in Post-Pulmonary Tuberculosis Sequelae [PDF]

Tuberculosis and Respiratory Diseases, 2022
Background Post-tuberculosis (TB) sequelae is a commonly encountered clinical entity, especially in high TB burden countries. This may represent chronic anatomic sequelae of previously treated TB, with frequent symptomatic presentation.
Kumar Shanmugasundaram, Anjana Talwar, Karan Madan, Geetanjali Bade   +3 more
doaj   +1 more source