Results 1 to 10 of about 10,377 (171)

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   +2 more sources

Efficient One-Step Synthesis of a Pt-Free Zn_0.76Co_0.24S Counter Electrode for Dye-Sensitized Solar Cells and Its Versatile Application in Photoelectrochromic Devices [PDF]

Nanomaterials, 2023
In this study, we synthesized a ternary transition metal sulfide, Zn0.76Co0.24S (ZCS-CE), using a one-step solvothermal method and explored its potential as a Pt-free counter electrode for dye-sensitized solar cells (DSSCs).
Yerbolat Tashenov, Diana Suleimenova, Bakhytzhan Baptayev, Salimgerey Adilov, Mannix P. Balanay   +4 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

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.
Zhuangxian Jiang, Chao Guo, Chengjin Ye, Yi Ding, Xueyong Tang, Youtong Fang   +5 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

Clinical and radiographic performance of preformed zirconia crowns and stainless-steel crowns in permanent first molars: 18-month results of a prospective, randomized trial [PDF]

BMC Oral Health, 2023
Background The treatment of young permanent first molars with extensive carious tissue loss may often require restoration with preformed crowns. This study compared the clinical and radiographic performance of stainless-steel crowns (SSCs) and preformed ...
Nazli Geduk, Merve Ozdemir, Gizem Erbas Unverdi, Elif Ballikaya, Zafer C. Cehreli   +4 more
doaj   +2 more sources

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

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

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

IEEE 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, Daniel Heredero-Peris, Francisco Diaz-Gonzalez, Marc Llonch-Masachs, Daniel Montesinos-Miracle   +4 more
doaj   +2 more sources