Results 1 to 10 of about 6,549 (295)

Cyclic fatigue resistance of a blue heat-treated engine-driven file with different angles of canal access using different kinematics; an in vitro study [PDF]

open access: yesFrontiers in Dental Medicine
ObjectivesTo evaluate the effect of angle of access and kinematics on the dynamic cyclic fatigue resistance of E3 Azure rotary NiTi files at body temperature.MethodsEighty E3 Azure files, 25/06, were randomly divided into two equal groups according to ...
Bassem Eid   +3 more
doaj   +2 more sources

Development and validation of the gift reciprocation anxiety scale (GRAS) for youths and adults in intimate relationships [PDF]

open access: yesHeliyon
The development and validation of any scale measuring reciprocation anxiety induced from gift reciprocation contexts are yet to be addressed for intimate relationships.
Mohd. Ashik Shahrier, Shakira Khatun
doaj   +2 more sources

Correlation of three wear testing methods and surface roughness analysis in 3D-printed crown materials [PDF]

open access: yesScientific Reports
The objective of this in vitro study was to evaluate and correlate the wear resistance of three additively manufactured dental restorative materials using three wear test methods. ball-on-disc, block-on-ring, and linear reciprocation.
Anastasiia Grymak   +3 more
doaj   +2 more sources

Deep reinforcement learning can promote sustainable human behaviour in a common-pool resource problem [PDF]

open access: yesNature Communications
A canonical social dilemma arises when resources are allocated to people, who can either reciprocate with interest or keep the proceeds. The right resource allocation mechanisms can encourage levels of reciprocation that sustain the commons.
Raphael Koster   +9 more
doaj   +2 more sources

Influence of reciprocating and rotary instrumentation on microbial reduction: a systematic review and meta-analysis of in vitro studies [PDF]

open access: yesRestorative Dentistry & Endodontics, 2021
ObjectivesThe purpose of this study was to conduct a systematic review and meta-analysis of in vitro studies regarding the effectiveness of reciprocating and rotary instrumentation on microbial reduction in root canals.Materials and MethodsPubMed, Scopus,
Selen Küçükkaya Eren   +2 more
doaj   +1 more source

Reciprocating subsurface-flow constructed wetlands: a microcosm treatability study

open access: yesWater Science and Technology, 2022
Two batch-loaded microcosm treatability studies of eight days' duration (192 hours) were conducted concurrently from July 26 through August 3 in an environmentally controlled greenhouse at the Tennessee Valley Authority's (TVA) Constructed Wetlands ...
Leslie Behrends   +3 more
doaj   +1 more source

Integrating Bio-Sensing Array with Blood Plasma Separation on a Centrifugal Platform

open access: yesSensors, 2023
Numerous immunoassays have been successfully integrated on disc-based centrifugal platforms (CDs) over the last 20 years. These CD devices can be used as portable point-of-care (POC) platforms with sample-to-answer capabilities where bodily fluids such ...
Snehan Peshin   +2 more
doaj   +1 more source

Shaping ability of two heat treated rotary NiTi instruments using different kinematics/in vitro study

open access: yesBulletin of the National Research Centre, 2021
Background Comparing shaping ability of Azure and Fanta AF One in rotation and reciprocation. This study was conducted on 40 resin blocks, having canal curvatures 30°-angle and of 16-mm length.
Engy M. Kataia   +3 more
doaj   +1 more source

Dynamic Cyclic Fatigue Resistance of Heat-treated Nickel Titanium Instruments in Reciprocating Motion

open access: yesEuropean Endodontic Journal, 2023
Objective: To compare the fatigue resistance of different heat-treated reciprocating instruments tested in a dynamic cyclic fatigue model. Methods: Forty-eight new instruments were inspected under magnification and selected for this study, and then ...
Thaís Kauana Magalhães Sobral   +7 more
doaj   +1 more source

One Good Turn Deserves Another: Antecedents of Online Karaoke Paid Gift-Sending from Social Exchange Perspectives

open access: yesJournal of Theoretical and Applied Electronic Commerce Research, 2021
Understanding the dynamics of online karaoke virtual gift sending helps maximize its utility for all participants, including viewers, broadcasters, and platforms. However, extant paid gift-sending studies lack an integrated theoretical explanation of its
Susan (Sixue) Jia, Banggang Wu
doaj   +1 more source

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