The Experts below are selected from a list of 170970 Experts worldwide ranked by ideXlab platform
Kenneth N Namerow - One of the best experts on this subject based on the ideXlab platform.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile® 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90° curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire™ NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire™ NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire™ NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90 degrees curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
Eugenia Johnson - One of the best experts on this subject based on the ideXlab platform.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile® 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90° curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire™ NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire™ NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire™ NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90 degrees curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
Christodoulos A. Floudas - One of the best experts on this subject based on the ideXlab platform.
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operational planning of large scale industrial batch plants under demand due date and amount uncertainty ii conditional value at risk framework
Industrial & Engineering Chemistry Research, 2010Co-Authors: Peter M. Verderame, Christodoulos A. FloudasAbstract:A novel framework based on conditional value-at-risk theory has been applied to the problem of operational planning for large-scale industrial batch plants under demand due date and amount uncertainty. The nominal planning with Production disaggregation model has been extended by means of conditional value-at-risk theory to address the objectives of providing a daily Production Profile that not only is a tight upper bound on the Production capacity of the plant but also is immune to the various forms of demand uncertainty. An industrial case study was conducted to demonstrate the viability of the proposed approach, which involves the novel application of conditional value-at-risk theory to the problem of operational planning under demand due date and amount uncertainty. A comparative study that juxtaposes the proposed operational planning model and the robust operational planning with Production disaggregation model presented in part I of this series of articles (Verderame and Floudas Ind. Eng. Chem. Res....
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operational planning of large scale industrial batch plants under demand due date and amount uncertainty i robust optimization framework
Industrial & Engineering Chemistry Research, 2009Co-Authors: Peter M. Verderame, Christodoulos A. FloudasAbstract:The operational planning of a large-scale industrial batch plant typically occurs over a time horizon of several months with the goal of providing daily Production targets and raw material requirements for the plant in question. Due to the length of the time horizon, demand uncertainty should be taken into account in order to ensure that the operational planning model provides reliable Production targets and/or raw material requirements. A robust novel operational planning model has been developed in order to address the objective of providing a reliable daily Production Profile which is immune to various forms of demand uncertainty. The ability of the proposed planning model to address the aforementioned objectives of an operational planning model has been validated through an industrial case study of a large-scale, multiproduct, and multipurpose batch plant having the capability of producing hundreds of different products over a time horizon of three months.
Sergio Kuttler - One of the best experts on this subject based on the ideXlab platform.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile® 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90° curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire™ NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire™ NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire™ NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90 degrees curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
Adam Lloyd - One of the best experts on this subject based on the ideXlab platform.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile® 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90° curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire™ NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire™ NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire™ NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
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comparison between a novel nickel titanium alloy and 508 nitinol on the cyclic fatigue life of Profile 25 04 rotary instruments
Journal of Endodontics, 2008Co-Authors: Eugenia Johnson, Adam Lloyd, Sergio Kuttler, Kenneth N NamerowAbstract:Profile 25/.04 instruments manufactured from three variants of Nitinol (1A, 1B & 2AS) were compared with stock Production Profile 25/.04 instruments and fatigue tested to failure. Cyclic fatigue testing was performed by rotating instruments at 300 RPM in a simulated steel root canal with 5 mm radius and 90 degrees curve until instrument separation. Time to failure was recorded. Torsion testing was undertaken by clamping 3 mm of each instrument tip between brass plates and rotating it at 2 RPM until failure. Data were recorded for torque and angle at fracture. Statistical differences were found with nickel-titanium variant 1B (M-Wire NiTi) nearly 400% more resistant to cyclic fatigue than stock Profile 25/.04 (P < .001). Torsion testing found differences between all 508 Nitinol groups and M-Wire NiTi (P < .001). Profile 25/.04 files manufactured from M-Wire NiTi have significantly greater resistance to cyclic fatigue while maintaining comparable torsional properties.
