Results 21 to 30 of about 101,726 (243)

The Impedance Measurements Problem in Antennas for RFID Technique

Metrology and Measurement Systems, 2014
The authors paid particular attention to the problem of antenna impedance measurements in the RFID technique. These measurements have to be realized by using two ports of a vector network analyzer and dedicated passive differential probes.
Jankowski-Mihułowicz Piotr, Pitera Grzegorz, Węglarski Mariusz   +2 more
doaj   +1 more source

A novel AC chopper integrated with active measurement of wideband impedance for wind power system

IET Power Electronics, 2023
Large‐scale wind farms are susceptible to oscillations like any other power systems with high penetration of power electronics, whose characteristics of wideband impedance hold the key to resolving this issue.
Yan Shi, Lei Qi, Xiangyu Zhang, Liangtao Zhan, Xiang Cui   +4 more
doaj   +1 more source

Accurate Online Battery Impedance Measurement Method with Low Output Voltage Ripples on Power Converters

Energies, 2021
The conventional online battery impedance measurement method works by perturbing the duty cycle of the DC-DC power converter and measuring the response of the battery voltage and current. This periodical duty cycle perturbation will continuously generate
Qi Yao, Dylan-Dah-Chuan Lu, Gang Lei
doaj   +1 more source

Impedance-type measurements using XPS [PDF]

Applied Surface Science, 2009
An impedance type of measurement using X-ray photoelectron spectroscopy is applied for probing charging/discharging dynamics of a sample containing Rb deposited on a SiO2/Si substrate containing an octadecyltrichlorosilane (OTS) bilayer coating. The OTS bilayer coatings have possible use as antirelaxation wall coatings for alkali atom vapor cells in ...
Suzer, S., Abelev, E., Bernasek, S.L.
openaire   +6 more sources

Determination of Transdermal Rate of Metallic Microneedle Array through an Impedance Measurements-Based Numerical Check Screening Algorithm

Micromachines, 2022
Microneedle systems have been widely used in health monitoring, painless drug delivery, and medical cosmetology. Although many studies on microneedle materials, structures, and applications have been conducted, the applications of microneedles often ...
Jingshan Mo, Junqing Liu, Shuang Huang, Baoming Liang, Xinshuo Huang, Cheng Yang, Meiwan Chen, Jing Liu, Tong Zhang, Xi Xie, Jun Guo, Fanmao Liu, Hui-Jiuan Chen   +12 more
doaj   +1 more source

Adjunctive Therapeutic Plasma Exchange in Refractory Adult‐Onset Still's Disease Complicated by Secondary Macrophage Activation Syndrome: A Single‐Center Experience

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Adult‐onset Still's disease (AOSD) complicated by macrophage activation syndrome (MAS) carries substantial mortality. The role of therapeutic plasma exchange (TPE) remains uncertain. Methods We retrospectively analyzed patients with AOSD‐MAS treated with TPE at a single‐center.
Masataka Ueda, Tomohiro Saito, Masahide Mizobuchi, Tomoki Shimomura, Saki Kawamori, Mitsuru Kawanishi, Natsuko Hattori, Jo Sugiyama, Satoshi Tsubata, Hanami Horiguchi, Kazuki Abe, Nao Iida, Yuki Kajio, Nao Oguro, Ryo Yanai, Hirokazu Honda   +15 more
wiley   +1 more source

A review of online battery impedance spectroscope acquisition method based on power electronic system

Green Energy and Intelligent Transportation
Battery impedance plays a crucial role in battery state monitoring. However, traditional impedance measurements rely on specialized equipment such as electrochemical workstations, incurring high costs and lacking real-time capabilities.
Boyang Li, Ding Luo, Min Zhou, Dong Jiang, An Li   +4 more
doaj   +1 more source

Field-Programmable Gate Array-Based Coating Impedance Detector for Rapid Evaluation of Early Degradation of Protective Coatings

IEEE Access, 2019
In this paper, a novel, compact, And field-programmable gate array (FPGA)-based coating impedance detector (CID 2.0) was proposed to rapidly detect the early degradation of coatings.
Yueh-Lien Lee, Yu-Tong Kuo, Hung-Hsun Chen, Yung-An Hsieh   +3 more
doaj   +1 more source

Characterization of Parasitic Impedance in PCB Using a Flexible Test Probe Based on a Curve-Fitting Method

IEEE Access, 2021
Switching in power semiconductors with emerging materials such as silicon carbide (SiC) leads to undesired overvoltages and oscillations that limit switching frequency, largely due to impedance in the current commutation loop.
A. Llamazares, M. Garcia-Gracia, S. Martin-Arroyo   +2 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source