Results 21 to 30 of about 1,044 (170)

Technology of Manufacturing of ZC Cylindrical Worm

open access: yesMaterials, 2022
Cylindrical worms are generally machined by the hobbing method using rotary tools, and they are formed in the finishing pass at the full profile height. In this case, the profile of the tool-action surface determines the profile of the machined surface, and for technological reasons, a rectilinear (less frequently circular) axial profile of the tool ...
Piotr Boral, Rafał Gołębski
openaire   +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

open access: yesBMC 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   +4 more
doaj   +1 more source

Dual-transformer-based hybrid resonant three-level ZCS converter

open access: yesEnergy Reports, 2021
A hybrid resonant three-level converter comprised of dual transformers is proposed in this paper, which is suitable for the application of distributed photovoltaic power accessing the medium voltage dc distribution network.
Syed Waqar Azeem   +4 more
doaj   +1 more source

Estudo experimental comparativo das perdas entre seis diferentes conversores do tipo boost com 1,6 kW, usando IGBT's

open access: yesEletrônica de Potência, 1996
Este trabalho apresenta uma análise comparativa das perdas experimentais entre um novo -conversar ZCS-PWM boost e cinco diferentes topologias para o conversor boost, operando com potência nominal de 1.6kW e frequência de chaveamento de ZOkHz, usando ...
Carlos A Canesin, Ivo Barbi
doaj   +1 more source

AEFormer: Zoom Camera Enables Remote Sensing Super-Resolution via Aligned and Enhanced Attention

open access: yesRemote Sensing, 2023
Reference-based super-resolution (RefSR) has achieved remarkable progress and shows promising potential applications in the field of remote sensing. However, previous studies heavily rely on existing and high-resolution reference image (Ref), which is ...
Ziming Tu   +7 more
doaj   +1 more source

About the exotic structure of Zcs

open access: yesNuclear Physics B, 2021
Very recently a new hadronic structure around 3.98 GeV was observed in BESIII experiment. From its decay modes, it is reasonable for people to assign it to the category of exotic state, say Zcs+, the stranged-parter of Zc(3900).
Bing-Dong Wan, Cong-Feng Qiao
doaj   +1 more source

Morpho-physiological and biochemical responses in wheat foliar sprayed with zinc-chitosan-salicylic acid nanoparticles during drought stress

open access: yesPlant Nano Biology, 2023
Drought is considered as a significant stress that hampers growth, development as well as productivity of wheat crop around the globe. The present investigation was performed to determine the changes induced by drought on morpho-physiology, antioxidative
Debjyoti Das   +6 more
doaj   +1 more source

Enhanced photoelectrochemical performance of P-doped g‑C3N4/Zn0.5Cd0.5S heterojunction photocathode for water splitting

open access: yesJournal of Saudi Chemical Society, 2022
Photoelectrochemical (PEC) hydrogen evolution reaction at semiconductor photocathode in the presence of visible light is a promising way to harvest renewable energy.
Waseem Zeb   +8 more
doaj   +1 more source

FORMATION OF «FALSE ANNUAL RINGS» ON SCALES OF JUVENILE COHO SALMON ONCORHYNCHUS KISUTCH IN LAKE KURAZHECHNOYE (KAMAKOVSKAYA LOWLAND — KAMCHATKA RIVER BASIN)

open access: yesИзвестия ТИНРО, 2019
During spring-summer flood (in mid May — July), transit underyearlings of coho salmon, having or having no scales, migrate to Lake Kurazhechnoye at the lower Kamchatka River, where resident coho salmon never spawn.
V. F. Bugaev   +2 more
doaj   +1 more source

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

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   +1 more source

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