Results 21 to 30 of about 2,351 (210)

A Comprehensive Analysis of Losses and Efficiency in a Buck ZCS Quasi-Resonant DC/DC Converter

open access: yesJournal of Low Power Electronics and Applications
As power electronics continue to advance, the demand for highly efficient and low-loss DC/DC converters has grown significantly. This article comprehensively analyses ZCS quasi-resonant switch cell losses and efficiency in buck L-type zero-current ...
Nikolay Hinov, Tsvetana Grigorova
doaj   +2 more sources

FeOOH Nanosheets Coupled with ZnCdS Nanoparticles for Highly Improved Photocatalytic Degradation of Organic Dyes and Tetracycline in Water [PDF]

open access: yesMolecules
Developing a low-cost and highly efficient semiconductor photocatalyst for the decomposition of organic pollutants and antibiotics is highly desirable. Herein, FeOOH nanosheets were prepared using a liquid-phase stirring technique and combined with ZnCdS
Jingren Yang
doaj   +2 more sources

Bridging Green Chemistry and Circular Economy: A Pathway to Sustainable Polyester Plastics Through Feedstock, Synthesis, and Waste Upcycling. [PDF]

open access: yesAdv Sci (Weinh)
This review summarizes green and low‐carbon strategies throughout the entire life cycle of polyester plastics, including sustainable monomer synthesis, optimization polymerization, efficient recycling, and advanced upcycling technologies. The synergistic implementation of these strategies is expected to significantly promote the development of a ...
Li J   +5 more
europepmc   +2 more sources

Analytical Dead-Band Compensation for ZCS Modulation Applied to Hybrid Si-SiC Dual Active Bridge [PDF]

open access: yesIEEE Access, 2020
This paper proposes a triangular modulation with zero current switching (ZCS) for a hybrid Si-SiC isolated bidirectional DC-DC converter (IBDC). Three of the four legs in the IBDC operate at ZCS and use Si IGBTs, while the fourth operates at zero voltage
Macia Capo-Lliteras   +4 more
doaj   +2 more sources

Development of a high performance ethylene glycol gas sensor using cobalt doped porous ZnFe2O4 nanostructures [PDF]

open access: yesScientific Reports
Porous ZnFe2O4 microspheres consisting of interwoven nanosheets doped with different concentrations of cobalt (ZC) with a diameter of approximately 1.5 μm were synthesized by a simple hydrothermal method.
Abdulrahman Sumayli   +2 more
doaj   +2 more sources

Guiding chili variety selection for Zao chili in Guizhou: Based on a systematic study of sensory, physicochemical, and volatile characteristics [PDF]

open access: yesFood Chemistry: X
This work investigated the influence of seven chili varieties in Guizhou on the quality of Zao Chili (ZC), a local traditional fermented chili product.
Xueya Wang   +7 more
doaj   +2 more sources

Factors influencing preformed metal crowns and prefabricated zirconia crowns [PDF]

open access: yesBMC Oral Health
Backgound Preformed metal crowns (PMCs) and zirconia crowns (ZCs) are commonly used for the treatment of primary molar caries. However, there have been no reports on factors influencing parental awareness, willingness to use these treatments, and the ...
Shuman Deng   +7 more
doaj   +2 more sources

A Reduced Complexity Acoustic-Based 3D DoA Estimation with Zero Cyclic Sum [PDF]

open access: yesSensors
Accurate direction of arrival (DoA) estimation is paramount in various fields, from surveillance and security to spatial audio processing. This work introduces an innovative approach that refines the DoA estimation process and demonstrates its ...
Rigel Procópio Fernandes   +2 more
doaj   +2 more sources

A Different Characterization of U1(ZCs)

open access: yes, 2012
In this paper, torsion-free part of U1(ZCs) is characterized by using a different description. That is, unlike the previous works, a classical ring and number theory is used in this characterization.
Arı, Kamil, Görgülü, Merve
openaire   +2 more sources

Performance analysis of ZVS and ZCS boost converters for Solar Photo Voltaic Applications [PDF]

open access: yesE3S Web of Conferences, 2023
This paper describes a useful modulated, asymmetric full-bridge converter for sustainable solar PV applications. The suggested converter achieves zero-voltage switching (ZVS) on the main side’s power switches and reduces circulating current loss by ...
Gireesh Kumar Devineni   +5 more
doaj   +1 more source

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