Results 11 to 20 of about 10,522 (245)

Contact mechanical behaviors of radial metal seal for the interval control valve in intelligent well: Modeling and theoretical study

open access: yesEnergy Science & Engineering, 2020
Intelligent wells equipped with the interval control valve (ICV), which have the potential applications to significantly improve oil production or control the water production of wells and fields, are more and more widely utilized in the oilfields.
Yiwei Yang   +7 more
doaj   +1 more source

Mathematical model of brush seals for gas turbine engines: A nonlinear analytical solution

open access: yesAdvances in Mechanical Engineering, 2021
Presented herein is a mathematical model employing differential equations formulation for brush seals used in gas turbine engines. These components are used to seal the bearing chamber from the environment and reduce the loss of lubricant in the ...
Amin Changizi   +3 more
doaj   +1 more source

Comparative Evaluation of Three Different Obturating Techniques Lateral Compaction, Thermafil and Calamus for Filling Area and Voids Using Cone Beam Computed Tomography: An Invitro study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Introduction: The success of root canal treatment depends upon the proper sealing of root canal system. Improper apical seal leads to the microleakage which can be prevented by proper obturation technique.
Ruchi Gupta   +2 more
doaj   +1 more source

Ultraviolet Nanosecond Laser Treatment to Reduce the Friction Coefficient of Silicon Carbide Ceramics

open access: yesApplied Sciences, 2021
The determination of the possibility for the reduction of the friction coefficient of ceramic parts from silicon carbide by pulse-periodic treatment with an ultraviolet nanosecond laser was carried out in the framework of this research.
Serguei P. Murzin   +5 more
doaj   +1 more source

Treatment of Dentinal Hypersensitivity by means of Nd:YAP Laser: A Preliminary In Vitro Study

open access: yesThe Scientific World Journal, 2014
Objective. The aim of this study is to evaluate the effectiveness of Nd:YAP laser to seal dentinal tubules at different parameters. Material and Methods. 24 caries-free human wisdom impacted molars were used.
Amaury Namour   +4 more
doaj   +1 more source

Comparison of Selected Anatomical and Treatment-related Diagnostic Parameters Estimated by Cone-Beam Computed Tomography and Digital Periapical Radiography in Teeth with Apical Periodontitis

open access: yeseJournal of Oral Maxillofacial Research, 2020
Objectives: To compare selected anatomical and treatment-related diagnostic parameters estimated by cone-beam computed tomography and by digital periapical radiography in teeth with apical periodontitis, and to evaluate reliability of different examiners
Jelena Gudac   +4 more
doaj   +1 more source

Impact of grain orientation and phase on Volta potential differences in an additively manufactured titanium alloy

open access: yesAIP Advances, 2021
This work introduces a method for co-localized multi-modal imaging of sub-μm features in an additively manufactured (AM) titanium alloy. Ti-6Al-4V parts manufactured by electron beam melting powder bed fusion were subjected to hot isostatic pressing to ...
Jake T. Benzing   +5 more
doaj   +1 more source

A cone beam computed tomographic evaluation of root canal treatment quality using periapical and endodontic status scale

open access: yesSRM Journal of Research in Dental Sciences, 2021
Background: Cone beam computed tomography (CBCT) is a three-dimensional digital imaging which provides an image that can be viewed in multiple planes thus providing a better understanding of the anatomy of the root canal.
Sagar Jatish Shah   +5 more
doaj   +1 more source

Ultrasonic phased array flexible coupling detection of defects in high-voltage cable terminal lead seals

open access: yesFrontiers in Mechanical Engineering
High-voltage cable terminal lead seals may develop defects such as holes, cracks, or delamination due to substandard installation quality or external forces during operation.
Peng Ziping   +5 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

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