Results 61 to 70 of about 1,353,401 (296)

Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation

IET Generation, Transmission & Distribution, 2021
Zero‐sequence currents in high‐voltage power systems during normal operation can have a significant influence on nearby infrastructure. It is therefore necessary to gain insight into typical levels of zero‐sequence currents in a variety of operational ...
Sjoerd Nauta, Ramiro Serra
doaj   +1 more source

Enhanced flat-topped modulation for MMC control in HVDC transmission systems [PDF]

, 2017
Flat-topped modulation is a member of the family of triplen-series injection techniques that have been extensively utilized in PWM inverter systems to increase the DC-link, and hence semiconductor, utilization.
Fletcher, John E., Li, Rui, Williams, Barry W., Xu, Lie   +3 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Giant Shapiro steps for two-dimensional Josephson-junction arrays with time-dependent Ginzburg-Landau dynamics

, 1999
Two-dimensional Josephson junction arrays at zero temperature are investigated numerically within the resistively shunted junction (RSJ) model and the time-dependent Ginzburg-Landau (TDGL) model with global conservation of current implemented through the
A. Jonsson, A. Jonsson, B. J. Kim, Beom Jun Kim, D. Domínguez, H. Beck, H. Beck, H. Eikman, I.-J. Hwang, I.F. Marino, J.C. Ciria, J.J. Vincente Alvarez, J.U. Free, K. Ravindran, K.-H. Wagenblast, K.H. Lee, K.H. Lee, M. Capezzali, M. Kvale, M. Octavio, M.S. Rzchowski, M.V. Simkin, M.V. Simkin, M.Y. Choi, P. Minnhagen, P.H.E. Tiesinga, P.H.E. Tiesinga, Petter Minnhagen, S. Kim, S. Kim, S. Teitel, S.E. Korshunov, S.J. Lee, S.P. Benz, S.P. Benz, T.C. Halsey, W.Y. Shih   +36 more
core   +1 more source

Emerging insights into CC and CXC chemokines and their receptors in Mycobacterium tuberculosis infection

FEBS Open Bio, EarlyView.
The dual roles of CC and CXC chemokines in distinguishing active, latent, and subclinical tuberculosis were reviewed, along with an evaluation of their potential as diagnostic biomarkers and therapeutic targets to advance precision medicine in tuberculosis management. The graphical abstract was generated with AI assistance (Gemini 3.0).
Xuying Yin, Dangsheng Xiao, Jiezuan Yang
wiley   +1 more source

Control of a Modular Multi-level Converter STATCOM for Low Voltage Ride-Through Condition [PDF]

, 2016
This paper presents a simulation study on the implementation of the Single Star Flying Capacitor Converter Modular Multi-level Cascaded Converter (MMCC-SSFCC) as a STATCOM operating under voltage sag condition.
Oghorada, OJK, Zhang, L
core   +2 more sources

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source

A simple current control strategy for a four-leg indirect matrix converter [PDF]

, 2014
In this paper the experimental validation of a predictive current control strategy for a four-leg indirect matrix converter is presented. The four-leg indirect matrix converter can supply energy to an unbalanced three-phase load whilst providing a path ...
Espinoza, Jose, Garcia, Cristian, Lopez, Miguel, Pena, Ruben, Rivera, Marco, Rodriguez, Jose, Wheeler, Patrick   +6 more
core   +2 more sources

Natural Products as Geroprotective Modulators in Diabetic Nephropathy: A Mechanistic Framework Integrating Aging Hallmarks and the AMPK–SIRT1–Nrf2 Axis

Aging and Cancer, EarlyView.
Natural products target the aging kidney in diabetic nephropathy by restoring the AMPK–SIRT1–Nrf2 axis, reducing oxidative stress, inflammation, fibrosis, and cellular senescence while enhancing mitochondrial biogenesis and antioxidant defenses.
Sherif Hamidu, Latif Adams, Eunice Ampem‐Danso, Justice Kumi, Abigail Aning, Fatima Hamidu, Mustapha Abdul Mumin Mohammed, Ayuba Nii Darku Ankrah, Seth Kwabena Amponsah   +8 more
wiley   +1 more source

Non-stationary Magnetic Microstructures in Stellar Thin Accretion Discs

, 2013
We examine the morphology of magnetic structures in thin plasma accretion discs, generalizing a stationary ideal MHD model to the time-dependent visco-resistive case.
Montani, Giovanni, Petitta, Jacopo
core   +1 more source