Results 11 to 20 of about 506,198 (188)

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

Chronic rhinosinusitis association with small airway disease: Inflammatory biomarkers and lung function using impulse oscillometry. [PDF]

Braz J Otorhinolaryngol
Objective: 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.
Dalbo Contrera Toro M, Souza Gomez CC, Lopes Francisco Parazzi P, Gonçalves Oliveira Ribeiro MÂ, Morcillo AM, Ribeiro JD, Sakano E.   +6 more
europepmc   +2 more sources

Research on impulse impedance model and protection optimization of transmission tower grounding device in mountainous area

IET Science, Measurement & Technology, 2021
The impulse impedance of the tower is the core parameter to evaluate the lightning protection performance of the transmission line. The high soil resistivity and the underground rock layers in the mountainous areas will induce large impulse impedance and
Lin Huang, Lijun Zhou, Dong Zhang, Dongyang Wang, Weifu Gu, Sixiang Chen   +5 more
doaj   +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   +2 more sources

Respiratory mechanics: modelling, measurement and clinical applications-a review. [PDF]

Biomed Eng Online
The 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,
Chowdhury A, Baumert M.
europepmc   +2 more sources

Impedance Control for a Free-Floating Robot in the Grasping of a Tumbling Target with Parameter Uncertainty [PDF]

, 2006
This paper addresses an impedance control for free-floating space robot in the grasping of a tumbling target with model uncertainty. Firstly, the operational space dynamics for a free-floating robot is derived with a novel, computationally efficient ...
Abiko, Satoko, Lampariello, Roberto, Gerd Hirzinger, Satoko Abiko, Roberto Lampariello, Hirzinger, Gerhard   +5 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

High current field test of impulse transient characteristics of substation grounding grid

The Journal of Engineering, 2018
It is significant to research the impulse characteristics of substation grounding grid for its optimal design and safe and stable operation. In order to obtain the impulse transient characteristics of substation grounding grid under lightning impulse ...
Xuefang Tong, Xiaohui Dong, Bo Tan
doaj   +1 more source

Reference values of respiratory impedance with impulse oscillometry in healthy Chinese adults [PDF]

Journal of Thoracic Disease, 2020
Abstract Background: Impulse oscillometry (IOS) is a non-invasive pulmonary function test for measuring respiratory impedance. Available reference equations of IOS indices for adults are limited. The aim of this study was to develop reference equations of IOS indices for Chinese adults.Methods: In a multicentral, cross-sessional study of ...
Xiaolin Liang, Yi Gao, Weijie Guan, Jing Du, Li Chen, Wen Han, Jinming Liu, Yong Lu, Yi Peng, Bingrong Zhao, Tao wang, Jinping Zheng   +11 more
openaire   +2 more sources

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