Results 1 to 10 of about 1,044 (170)

An AC-DC Interleaved ZCS-PWM Boost Converter With Reduced Auxiliary Switch RMS Current Stress

IEEE Access, 2021
The paper proposes a novel interleaved AC-DC ZCS-PWM boost converter that requires the use of just a single active auxiliary switch to assist in the turning off the main power circuit switches with ZCS.
Gerry Moschopoulos, Adel Abosnina, Ramtin Rasoulinezhad   +2 more
exaly   +3 more sources

Synergistic Enhancement of Visible-Light-Driven Photocatalytic H₂O₂ Production over g-C₃N₄/ZnCdS by Zn Vacancies and Heterointerface Engineering [PDF]

Nanomaterials
Hydrogen peroxide (H2O2) is an important green oxidant, and developing efficient visible-light-driven routes for its synthesis is highly desirable. Herein, a CN/ZnV-ZCS composite photocatalyst was constructed by coupling g-C3N4 (CN) with Zn-vacancy ...
Zhenyu Wang, Wei Yan, Yingcong Wei, Jing Xu, Yuee Xie, Yuanping Chen, Xiaohong Yan   +6 more
doaj   +2 more sources

Design and Implementation of an Auto-Oriented Bidirectional ZCS Hybrid Circuit Breaker

IEEE Access, 2021
To protect power systems from severe short circuit faults, the zero-current switching (ZCS) technique is widely accepted due to its fast interruption speed.
Ye Chengjin, Youtong Fang, Yi Ding
exaly   +3 more sources

Rethinking wellbeing measurement: Learning from a scale development study with adolescents living with HIV in Zimbabwe. [PDF]

PLOS Global Public Health
Adolescents living with HIV (ALHIV) in Eastern and Southern Africa experience challenges around medication adherence, mental health and wellbeing.
Webster Mavhu, Jermaine M Dambi, Victoria Simms, Faith Martin, Joni Lariat, Rufaro Mbundure, Leviticus Makoni, Laura Kafata, Carol Wogrin, Vivian Chitiyo, Abigail Mutsinze, Frances M Cowan, Nicola Willis, Sarah Bernays   +13 more
doaj   +2 more sources

Enriched Oxygen Vacancy‐Mediated Efficient Charge Transfer in S‐Scheme ZnO‐VO@Zn0.5Cd0.5S Heterojunction for Rapid U(VI) Removal From Nuclear Wastewater [PDF]

Advanced Science
Efficient charge separation is critical for high‐performance photocatalytic reduction of U(VI) in nuclear wastewater. Employing defect engineering, an oxygen vacancy (VO)‐enriched S‐scheme ZnO‐VO@Zn0.5Cd0.5S (ZnO‐VO@ZCS) heterojunction is constructed for
Cailing Liu, Xiaohui Ren, Smruti Ranjan Sahoo, Artem Kuklin, Chen Yao, Hans Ågren, Ye Zhang   +6 more
doaj   +2 more sources

Radicular Pathology in Zirconia and Stainless-Steel Crowns in Primary Posterior Teeth: A Retrospective Comparative Longitudinal Study [PDF]

Children
Background: Zirconia crowns (ZCs) are increasingly used in pediatric dentistry for their esthetic advantages, but evidence regarding their long-term outcomes compared with stainless steel crowns (SSCs) is limited. Methods: This retrospective cohort study
Diana Ram, Maayan Sherman, David Polak, Esti Davidovich   +3 more
doaj   +2 more sources

Comparative Study on the Durability of Stainless Steel Crowns vs. Zirconia Crowns for Pediatric Use [PDF]

Journal of Pharmacy and Bioallied Sciences
Background: The durability of dental crowns is critical in pediatric dentistry to ensure long-term functionality and esthetics. Stainless steel crowns (SSCs) have been a staple in restorative pediatric dentistry, while zirconia crowns (ZCs) have emerged ...
Umesh C. Chaudhary, Malay Singh, Divyanshu Srivastava, Shridevi Hugar, Vartika Singh, Nitin Singh, Miral Mehta, Dnyanesh Shul   +7 more
doaj   +2 more sources

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

Molecules
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

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

Scientific 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, Ruaa M. Almotawa, Jawaher Abdullah Alamoudi   +2 more
doaj   +2 more sources

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

E3S 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, Venkata Sireesha Nagineni, Malleswara Rao D.S. Naga, Sainadh Singh Kshatri, Chaudhary Prashant, Pavan kumar T.V.V.   +5 more
doaj   +1 more source