Results 51 to 60 of about 5,629,230 (293)

Identification of composite power quality disturbances based on relative position matrix

open access: yesFrontiers in Energy Research
With the integration of large-scale nonlinear loads and distributed power sources into the grid, composite power quality disturbances (PQDs) events are becoming increasingly common, which significantly degrade the quality of power supply. Therefore, this
Zijun Liu   +5 more
doaj   +1 more source

Removal of methylene blue and mechanism on magnetic γ-Fe2O3/SiO2 nanocomposite from aqueous solution

open access: yesWater Resources and Industry, 2016
Magnetic γ-Fe2O3/SiO2 (M-γFS) nanocomposite was prepared using γ-Fe2O3 as the magnetic carriers. M-γFS was characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), and Fourier Transform infrared spectroscopy (FTIR).
Dong Chen   +4 more
doaj   +1 more source

Harmonic Data Recovery Method Based on Multivariate Norm Matrix

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
During state perception of a power system, fragments of harmonic data are inevitably lost owing to the loss of synchronization signals, transmission delays, instrument failures, or other factors.
Ying Wang   +5 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]

open access: yes, 2013
In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
A. S., Kumar, J.S., Sathiyanarayanan
core   +2 more sources

Research and Analysis of Short-term Load Forecasting Based on Frequency Domain Decomposition

open access: yesZhongguo dianli, 2020
To study the effect of frequency domain component prediction on the accuracy of short-term load forecasting. This paper proposes to decompose the original load data based on the frequency domain decomposition algorithm,and decompose the data into four ...
Yuan MA   +4 more
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

MULTIFUNCTIONAL POWER QUALITY CORRECTION SYSTEM [PDF]

open access: yes, 2018
Study the system of electric power quality control based on AVI with PWM in the systems of group feed of electromechanics with the direct-current ...
KOLB, Andrii
core  

Fuzzy Controller for Matrix Converter System to Improve its Quality of Output

open access: yes, 2010
In this paper, Fuzzy Logic controller is developed for ac/ac Matrix Converter. Furthermore, Total Harmonic Distortion is reduced significantly. Space Vector Algorithm is a method to improve power quality of the converter output.
Gurusamy, G., Mahendran, Nagalingam
core   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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