Results 31 to 40 of about 2,351 (210)

Temporal Stability of the Zulliger Test in Brazilian Adults [PDF]

open access: yesPaidéia (Ribeirão Preto), 2023
The reliability of a test obtained over time is an indispensable measure to ensure the use of the instrument. This study aims to explore the temporal stability of the Zulliger test in Brazilian adults.
Jucelaine Bier Di Domenico Grazziotin   +2 more
doaj   +1 more source

Observation of a Vector Charmoniumlike State at 4.7 GeV/c2 and Search for Zcs in e+e- →k+K-J/ψ [PDF]

open access: yes, 2023
Using data samples with an integrated luminosity of 5.85 fb-1 collected at center-of-mass energies from 4.61 to 4.95 GeV with the BESIII detector operating at the BEPCII storage ring, we measure the cross section for the process e+e-→K+K-J/ψ.
Kavatsyuk, M.; id_orcid   +3 more
core   +2 more sources

Novel Soft-Switching Integrated Boost DC-DC Converter for PV Power System

open access: yesEnergies, 2020
This paper presents a novel soft-switching boost DC-DC converter, which uses an edge-resonant switch capacitor based on the pulse width modulation PWM technique.
Khairy Sayed   +2 more
doaj   +1 more source

The new resonances Zcs(3985) and Zcs(4003) (almost) fill two tetraquark nonets of broken SU(3)f

open access: yes, 2021
New data from BESIII and LHCb indicate the existence of two hidden charm, open strangeness resonances, Zcs(3985) and Zcs(4003). The near degeneracy of Zcs(3985) and Zcs(4003) reproduces, in the strange sector, the situation observed with X(3872) and Zc ...
Riquer, Verónica   +2 more
core   +1 more source

Possible Tetraquark Explanations for the Proposed Zcs(4000)+ and Zcs(4220)+ [PDF]

open access: yes, 2021
The recently proposed Zcs(4000)+ and Zcs(4220)+ structures are investigated using a first-order tetraquark mass formula. This mass relationship is based on weakly bound J/Ψ(c c-bar) + K+ (u s-bar) meson clusters and their excited states. The first-order tetraquark mass formula provides a reasonable prediction (within 8%) of the measured masses.
openaire   +1 more source

The health system accountability impact of prison health committees in Zambia

open access: yesInternational Journal for Equity in Health, 2018
Background From 2013, the Zambian Corrections Service (ZCS) worked with partners to strengthen prison health systems and services. One component of that work led to the establishment of facility-based Prison Health Committees (PrHCs) comprising of both ...
Stephanie M. Topp   +5 more
doaj   +1 more source

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

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

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