Results 1 to 10 of about 445,914 (314)

The relationship between light curing time, shear bond strength (SBS) and remanence index of adhesive (ARI) [PDF]

open access: yesRomanian Journal of Stomatology, 2022
The objective of this study is to investigate the effect of different light curing times on the shear strength and remanence index of the adhesive. The light curing intensity was presented by Woodpecker LED light curing unit (2500 mw/cm2).
Mahmoud El Saafin   +5 more
doaj   +1 more source

Research on the similarity of vibration characteristics of naval gun bracket based on similarity theory

open access: yesXibei Gongye Daxue Xuebao, 2021
The similar scale model experiment can provide some reference for the research and development of naval gun weapons. This paper takes the naval gun bracket as an example to explain.
GONG Junjun   +4 more
doaj   +1 more source

Evaluation of Integrity of Mesh of Different Orthodontic Brackets [PDF]

open access: yesAl-Rafidain Dental Journal, 2011
Aims: To evaluate and compare the effect of micro etcher model II on geometrical integrity of base of variable types of orthodontic brackets after etching and compared with new bracket. Materials and Methods: Twenty seven brackets were divided into three
Omar H Alluazy
doaj   +1 more source

Effect of Graphene Sheets Embedded Carbon Films on the Fretting Wear Behaviors of Orthodontic Archwire–Bracket Contacts

open access: yesNanomaterials, 2022
Carbon films were fabricated on the orthodontic stainless steel archwires by using a custom-designed electron cyclotron resonance (ECR) plasma sputtering deposition system under electron irradiation with the variation of substrate bias voltages from +5 V
Pengfei Wang   +4 more
doaj   +1 more source

Performance analysis on the structure of the bracket mounting for hybrid converter kit: Finite-element approach

open access: yesCurved and Layered Structures, 2023
An electric motor mounting bracket is used in electric vehicles, especially hybrid ones using a parallel hybrid configuration. This study aims to analyze the strength and performance of the initial design and topology optimized design.
Effendi Ma’ruf Yanuar   +3 more
doaj   +1 more source

Evaluation of the Effects of Different Mouthrinses on the Color Stability of One Type of Glass Ionomer, Compomer and Giomer [PDF]

open access: yesJournal of Dental Materials and Techniques, 2016
Objectives: The aim of this study was to evaluate the effect of four commercially available mouthrinses on the color stability of one type of glass ionomer, giomer and compomer. Method: 60 disc-shaped specimens, 180 in total (7*2mm), fabricated from each
Shaghayegh Razavi   +3 more
doaj   +1 more source

The Shear Bond Strengths of Metal and Ceramic Brackets: An in-Vitro Comparative Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2013
Aim: This study has compared the Shear Bond Strengths (SBSs) of ceramic brackets and metal brackets. Materials and Method: Forty freshly extracted, human maxillary first premolars were selected for bonding.
Y G Reddy   +5 more
doaj   +1 more source

Effects of Different Adhesive Systems and Orthodontic Bracket Material on Enamel Surface Discoloration: An In Vitro Study

open access: yesApplied Sciences, 2022
The aim of this in vitro study was to assess the effect of the type of orthodontic brackets and adhesive systems on enamel discoloration. The baseline color of the buccal surfaces of 50 extracted human premolars was recorded using a spectrophotometer ...
Ali Alqerban   +6 more
doaj   +1 more source

3D-Printed Satellite Brackets: Materials, Manufacturing and Applications

open access: yesCrystals, 2022
Brackets are the load-bearing components in a satellite. The current age of satellites comprises specific brackets that set out as a link between the bodies of the satellite, reflector parts, and feeder facilities mounted at its upper end.
Saswat Kumar Samal   +8 more
doaj   +1 more source

Extraction of Collagen and Preparation and Characterization of Nanofibers

open access: yesShipin gongye ke-ji, 2023
In order to improve the extraction rate and utilization rate of collagen in sheepskin, sheepskin collagen was extracted by acid enzyme compounding method, and collagen-based nanofibers were prepared by electrospinning technology.
Hongshuai HAN   +4 more
doaj   +1 more source

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