Results 201 to 210 of about 221,162 (251)
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Ductile Shape-Memory Polymer Composite with Enhanced Shape Recovery Ability
ACS Applied Materials & Interfaces, 2020In recent years, shape-memory polymers (SMPs) have received extensive attention to be used as actuators in a broad range of applications such as medical and robotic devices. Their ability to recover large deformations and their capability to be stimulated remotely have made SMPs a superior choice among different smart materials in various applications.
Kaiyuan Peng +3 more
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Memory for Random Shapes and Eidetic Ability
Perceptual and Motor Skills, 1982A measure of eidetic imagery (memory for random shapes) was evaluated with a group of 56 third grade subjects. No relationship was found between the memory task and a standard eidetic imagery task. The memory task did correlate .44 with Otis-Lennon IQ, .33 reading ability, and .23 teachers' ratings of reading ability.
K, Wasinger, P F, Zelhart, R P, Markley
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Shaping Ability of 4 Different Single-File Systems in Simulated S-Shaped Canals
Journal of Endodontics, 2015The aim of this study was to compare the shaping ability of 4 different single-file systems in simulated S-shaped canals.Sixty-four S-shaped canals in resin blocks were prepared to an apical size of 25 using Reciproc (VDW, Munich, Germany), WaveOne (Dentsply Maillefer, Ballaigues, Switzerland), OneShape (Micro Méga, Besançon, France), and F360 (Komet ...
Saeid Tavanafar, Edgar Schafer
exaly +3 more sources
Lingering Cognitive States Shape Fundamental Mnemonic Abilities
Psychological Science, 2017Why are people sometimes able to recall associations in exquisite detail while at other times left frustrated by the deficiencies of memory? Although this apparent fickleness of memory has been extensively studied by investigating factors that build strong memory traces, researchers know less about whether memory success also depends on cognitive ...
Anuya, Patil, Katherine, Duncan
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Shaping ability of three thermally treated nickel‐titanium systems in S‐shaped canals
Australian Endodontic Journal, 2021AbstractThis study aimed to compare the shaping ability of ProTaper Next (PTN), HyFlex EDM (HEDM) and One Curve (OC) systems manufactured via different thermal treatment methods in simulated S‐shaped canals. Sixty S‐shaped canals in clear resin blocks were enlarged to a final apical size of 25 using PTN, HEDM and OC instruments (n = 20 canals/group ...
Mohamed A. Gomaa +2 more
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Shaping Ability of Four Nickel-Titanium Rotary Instruments in Simulated S-Shaped Canals
Journal of Endodontics, 2009The purpose of this study was to compare the shaping ability of ProTaper, Mtwo, BioRaCe, and BioRaCe + S-Apex instruments in simulated canals with an S-shaped curvature.Canal transportation and aberrations were assessed by comparing the preinstrumentation and postinstrumentation images under a stereomicroscope. Analysis of variance and post hoc Student-
Bonaccorso A +4 more
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International Endodontic Journal, 2006
AbstractAim To compare the shaping ability of Mtwo instruments with K3 and RaCe instruments. Part 1 of this two‐part report describes the efficacy of these nickel–titanium instruments in simulated curved root canals.Methodology Simulated canals with 28° and 35° curves in resin blocks were prepared with Mtwo instruments using a single length technique
E, Schäfer, M, Erler, T, Dammaschke
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AbstractAim To compare the shaping ability of Mtwo instruments with K3 and RaCe instruments. Part 1 of this two‐part report describes the efficacy of these nickel–titanium instruments in simulated curved root canals.Methodology Simulated canals with 28° and 35° curves in resin blocks were prepared with Mtwo instruments using a single length technique
E, Schäfer, M, Erler, T, Dammaschke
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A water-responsive shape memory ionomer with permanent shape reconfiguration ability
Smart Materials and Structures, 2018Abstract In this work, a water-responsive shape memory ionomer with high toughness was fabricated by cross-linking hyaluronic acid sodium (HAS) and polyvinyl alcohol (PVA) through coordination interactions. The strong Fe 3+ -carboxyl (from HAS) coordination interactions ...
Yongkang Bai +3 more
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Shape memory materials with reversible shape change and self-healing abilities: A review
Materials Today: Proceedings, 2021Abstract In the past decade, exceptional development could be seen in the field of shape memory polymers that have responsive nature to some stimulus. The applications of shape memory polymers have increased day by day after the evolution of Shape memory polymer composites (SMPCs).
Brijesh Mishra, Sumit Sharma
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In Vitro Comparison of Shaping Abilities of ProTaper and GT Rotary Files
Journal of Endodontics, 2004This study analyzed the abilities of ProTaper and GT Rotary files to shape the curved canals of extracted mandibular molars. Twenty mesial canals with curvatures ranging from 23 to 54 degrees (Weine analysis) were radiographically selected from a group of 58 molars.
Veltri, Mario +4 more
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