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  • Assessment of the accuracy of interproximal tooth ...

    2016-4-19u2002·u2002Tooth Reduction using Three-Dimensional Digital Models Mark Christopher Blandy Doctor of Clinical Dentistry (DClinDent) ... also aid in correcting tooth size discrepancies, improving stability, and for ... which referred to the shortening of the dental arch and contributed to the 3. . …

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  • Characterizing the performance of dental air-turbine ...

    2008-1-1u2002·u2002The first air-powered dental engine design was patented in 1868 1 although in fact this was not a turbine but effectively a lobe pump operated in reverse. It was intended to be operated by mouth, foot bellows, or a compressed air vessel. The first true turbine dental handpiece, with a 13-bladed rotor, was patented in 1874, 2 with similar ...

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  • Lingual orthodontic bracket - All medical device ...

    lingual. metal orthodontic bracket. 3 Dimensional Teeth Conrtol 2 Slot (018,019Slots) - Straight Wire Arch Form - Low Profile, Small Volume, High Precision - Comfortable (Minimizing Irritation) - Precise & Rapid Teeth Movement. Compare this product Remove from comparison tool.

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  • Three-dimensional soft tissue evaluation after rapid ...

    2021-5-3u2002·u2002Three-dimensional soft tissue evaluation after rapid maxillary expansion and mandibular midline distraction osteogenesis ... is a well-known approach to correcting maxillary transverse deficiency while providing an increase in arch width to resolve mild to moderate crowding. 2 ... Expansion of the dental arches, tooth extraction, ...

    Get Price
  • (PDF) Three-dimensional temperature field simulation for ...

    In this paper, a three-dimensional finite element model of the rotor of a Y100L-2 induction. motor is built, and the temperature fields of the rotor are simulated when the motor is unloaded ...

    Get Price
  • Traditional Design of Cage Rotor Induction Motors

    2014-6-24u2002·u2002Current density in the rotor bar is higher closer to air-gap. In traditional designs of 60 Hz line-fed induction machines, skin effect is represented by correction coefficients K R and K X for bar resistance and slot leakage inductance. (Ref. [1] Boldea) K R and K X depend on the shape and size of the rotor slot, the conductor

    Get Price
  • An Investigation on Dynamic Characteristics of a Gas ...

    2013-9-23u2002·u2002A correction coefficient for equivalent stiffness imported from a three-dimensional (3D) finite element contact case analysis is defined to evaluate the contact effects, and then the dynamic model of the rod-fastened rotor including bearing support is established.

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  • Prediction of Rotordynamic Coefficients for Short ...

    2012-4-12u2002·u2002Three methods for the prediction of stiffness and damping coefficients as well as the effect of turbulence modeling, boundary conditions, and solver parameters are presented. The rest of the paper shows the results of a parameter variation (inlet pressure, preswirl, and shaft rotational speed) for two labyrinth seals with a tooth radial ...

    Get Price
  • Patents Assigned to Sirona Dental Systems GmbH - Justia ...

    2013-10-3u2002·u2002Abstract: A dental apparatus that includes a turbine, a rotor, and a disruptive contour. The turbine drives a tool by compressed air. The rotor is arranged in a turbine compartment and rotates about its longitudinal axis. The rotor includes a plurality of blades that extend up to a front side of the rotor.

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  • On-line monitoring and control of thermal stresses in ...

    2016-2-5u2002·u2002The effectiveness of the method has been proven by an example of a three-dimensional model of a pressure vessel of nuclear reactor. The present paper deals with the problems of modeling steam temperature and thermal stresses for on-line supervision of low-cycle fatigue life. A control system is proposed and its main elements are: 1.

    Get Price
  • Three-dimensional soft tissue evaluation after rapid ...

    2021-5-3u2002·u2002Three-dimensional soft tissue evaluation after rapid maxillary expansion and mandibular midline distraction osteogenesis ... is a well-known approach to correcting maxillary transverse deficiency while providing an increase in arch width to resolve mild to moderate crowding. 2 ... Expansion of the dental arches, tooth extraction, ...

    Get Price
  • Characterizing the performance of dental air-turbine ...

    2008-1-1u2002·u2002The first air-powered dental engine design was patented in 1868 1 although in fact this was not a turbine but effectively a lobe pump operated in reverse. It was intended to be operated by mouth, foot bellows, or a compressed air vessel. The first true turbine dental handpiece, with a 13-bladed rotor, was patented in 1874, 2 with similar ...

    Get Price
  • A Numerical Study on Performance of Dental Air Turbine ...

    2017-9-1u2002·u2002The rotor blades rotate at high speed, and the bur is applied to the teeth. Usually, high speed air-turbine dental handpieces operate at 200,000 to 400,000 revolutions per minute [5]. The main part of the dental air turbine is its high speed rotor head consisting of a casing with air inlet and outlet nozzles, impeller, spindle, chuck and ...

    Get Price
  • (PDF) Three-dimensional temperature field simulation for ...

    In this paper, a three-dimensional finite element model of the rotor of a Y100L-2 induction. motor is built, and the temperature fields of the rotor are simulated when the motor is unloaded ...

    Get Price
  • Prediction of Rotordynamic Coefficients for Short ...

    2012-4-12u2002·u2002Three methods for the prediction of stiffness and damping coefficients as well as the effect of turbulence modeling, boundary conditions, and solver parameters are presented. The rest of the paper shows the results of a parameter variation (inlet pressure, preswirl, and shaft rotational speed) for two labyrinth seals with a tooth radial ...

    Get Price
  • Traditional Design of Cage Rotor Induction Motors

    2014-6-24u2002·u2002Current density in the rotor bar is higher closer to air-gap. In traditional designs of 60 Hz line-fed induction machines, skin effect is represented by correction coefficients K R and K X for bar resistance and slot leakage inductance. (Ref. [1] Boldea) K R and K X depend on the shape and size of the rotor slot, the conductor

    Get Price
  • Patents Assigned to Sirona Dental Systems GmbH - Justia ...

    2013-10-3u2002·u2002Abstract: The invention relates to a method for checking tooth positions, wherein an initial three-dimensional volume exposure (1) of teeth (2, 3, 4) to be checked is implemented, wherein the position and orientation of the teeth (2, 3, 4) to be checked are determined based on the initial volume exposure (1); wherein the teeth to be checked are natural teeth (2, 3, 4) comprised of tooth stumps ...

    Get Price
  • On-line monitoring and control of thermal stresses in ...

    2016-2-5u2002·u2002The effectiveness of the method has been proven by an example of a three-dimensional model of a pressure vessel of nuclear reactor. The present paper deals with the problems of modeling steam temperature and thermal stresses for on-line supervision of low-cycle fatigue life. A control system is proposed and its main elements are: 1.

    Get Price
  • METHOD FOR MEASURING PRE-TWIST AMOUNT OF

    The rotor main body 10 is formed in a columnar shape extending in the direction of an axis O. The rotor main body 10 is provided, for example, inside a turbine such as a steam turbine. The rotor main body 10 is supported to be rotatable about the axis O. The disc 20 is formed to cover an outer circumferential surface of the rotor main body 10.

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  • Three-dimensional soft tissue evaluation after rapid ...

    2021-5-3u2002·u2002Three-dimensional soft tissue evaluation after rapid maxillary expansion and mandibular midline distraction osteogenesis ... is a well-known approach to correcting maxillary transverse deficiency while providing an increase in arch width to resolve mild to moderate crowding. 2 ... Expansion of the dental arches, tooth extraction, ...

    Get Price
  • Aerodynamic wind-turbine rotor design using surrogate ...

    2016-8-1u2002·u2002A surrogate-optimization framework using a three-dimensional viscous-inviscid interaction code (MIRAS) for the aerodynamic design of wind-turbine rotors is proposed. To verify the methodology, a model wind-turbine rotor was designed using the proposed method and compared to blade element momentum (BEM) approaches.

    Get Price
  • A comparison of two- and three-dimensional S809 airfoil ...

    1990-2-1u2002·u2002A comparison of two- and three-dimensional S809 airfoil properties for rough and smooth HAWT (horizontal-axis wind turbine) rotor operation

    Get Price
  • Characterizing the performance of dental air-turbine ...

    2008-1-1u2002·u2002The first air-powered dental engine design was patented in 1868 1 although in fact this was not a turbine but effectively a lobe pump operated in reverse. It was intended to be operated by mouth, foot bellows, or a compressed air vessel. The first true turbine dental handpiece, with a 13-bladed rotor, was patented in 1874, 2 with similar ...

    Get Price
  • Parameters matching analysis of the stator and rotor for ...

    To improve the power generation efficiency, the parameters matching analysis method for the downhole generator with asymmetric turbine is established on basis of the experimental design theory, response surface methodology and orthogonal experimental design. Firstly, according to the theoretical analysis, the computational domain model is built by the three-dimensional modeling software.

    Get Price
  • E 26 Three Dimensional Modeling for Design Fall 2017

    2019-2-3u2002·u20026 9/26 Aerodynamics of wind turbine Work on the blade design as a group and turn in Rotor blade design, angle of 2-3 pages of your concept designs (sketches) attack, profile,… at the end of the lab.period (10 pts) 7 Lab. work #510/3 Wind turbine tower structure design –due Tu. 10/10 by 11:00 pm

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  • Computations of a Film Cooled Turbine Rotor Blade With

    2015-2-18u2002·u2002A numerical investigation of film cooling on a turbine rotor blade has been carried out. The computations were performed with a 3D-Navier-Stokes code utilizing an unstructured solution adaptive grid methodology (Dawes (1992)). The code uses a low Reynolds number k-epsilon model for prescribing the Reynolds stresses.

    Get Price
  • Traditional Design of Cage Rotor Induction Motors

    2014-6-24u2002·u2002Current density in the rotor bar is higher closer to air-gap. In traditional designs of 60 Hz line-fed induction machines, skin effect is represented by correction coefficients K R and K X for bar resistance and slot leakage inductance. (Ref. [1] Boldea) K R and K X depend on the shape and size of the rotor slot, the conductor

    Get Price
  • A Numerical Study on Performance of Dental Air Turbine ...

    2017-9-1u2002·u2002The rotor blades rotate at high speed, and the bur is applied to the teeth. Usually, high speed air-turbine dental handpieces operate at 200,000 to 400,000 revolutions per minute [5]. The main part of the dental air turbine is its high speed rotor head consisting of a casing with air inlet and outlet nozzles, impeller, spindle, chuck and ...

    Get Price
  • Patents Assigned to Sirona Dental Systems GmbH - Justia ...

    2013-10-3u2002·u2002Abstract: The invention relates to a method for checking tooth positions, wherein an initial three-dimensional volume exposure (1) of teeth (2, 3, 4) to be checked is implemented, wherein the position and orientation of the teeth (2, 3, 4) to be checked are determined based on the initial volume exposure (1); wherein the teeth to be checked are natural teeth (2, 3, 4) comprised of tooth stumps ...

    Get Price
  • Three-dimensional soft tissue evaluation after rapid ...

    2021-5-3u2002·u2002Three-dimensional soft tissue evaluation after rapid maxillary expansion and mandibular midline distraction osteogenesis ... is a well-known approach to correcting maxillary transverse deficiency while providing an increase in arch width to resolve mild to moderate crowding. 2 ... Expansion of the dental arches, tooth extraction, ...

    Get Price
  • Aerodynamic wind-turbine rotor design using surrogate ...

    2016-8-1u2002·u2002A surrogate-optimization framework using a three-dimensional viscous-inviscid interaction code (MIRAS) for the aerodynamic design of wind-turbine rotors is proposed. To verify the methodology, a model wind-turbine rotor was designed using the proposed method and compared to blade element momentum (BEM) approaches.

    Get Price
  • A comparison of two- and three-dimensional S809 airfoil ...

    1990-2-1u2002·u2002A comparison of two- and three-dimensional S809 airfoil properties for rough and smooth HAWT (horizontal-axis wind turbine) rotor operation

    Get Price
  • Characterizing the performance of dental air-turbine ...

    2008-1-1u2002·u2002The first air-powered dental engine design was patented in 1868 1 although in fact this was not a turbine but effectively a lobe pump operated in reverse. It was intended to be operated by mouth, foot bellows, or a compressed air vessel. The first true turbine dental handpiece, with a 13-bladed rotor, was patented in 1874, 2 with similar ...

    Get Price
  • Parameters matching analysis of the stator and rotor for ...

    To improve the power generation efficiency, the parameters matching analysis method for the downhole generator with asymmetric turbine is established on basis of the experimental design theory, response surface methodology and orthogonal experimental design. Firstly, according to the theoretical analysis, the computational domain model is built by the three-dimensional modeling software.

    Get Price
  • E 26 Three Dimensional Modeling for Design Fall 2017

    2019-2-3u2002·u20026 9/26 Aerodynamics of wind turbine Work on the blade design as a group and turn in Rotor blade design, angle of 2-3 pages of your concept designs (sketches) attack, profile,… at the end of the lab.period (10 pts) 7 Lab. work #510/3 Wind turbine tower structure design –due Tu. 10/10 by 11:00 pm

    Get Price
  • Computations of a Film Cooled Turbine Rotor Blade With

    2015-2-18u2002·u2002A numerical investigation of film cooling on a turbine rotor blade has been carried out. The computations were performed with a 3D-Navier-Stokes code utilizing an unstructured solution adaptive grid methodology (Dawes (1992)). The code uses a low Reynolds number k-epsilon model for prescribing the Reynolds stresses.

    Get Price
  • Traditional Design of Cage Rotor Induction Motors

    2014-6-24u2002·u2002Current density in the rotor bar is higher closer to air-gap. In traditional designs of 60 Hz line-fed induction machines, skin effect is represented by correction coefficients K R and K X for bar resistance and slot leakage inductance. (Ref. [1] Boldea) K R and K X depend on the shape and size of the rotor slot, the conductor

    Get Price
  • A Numerical Study on Performance of Dental Air Turbine ...

    2017-9-1u2002·u2002The rotor blades rotate at high speed, and the bur is applied to the teeth. Usually, high speed air-turbine dental handpieces operate at 200,000 to 400,000 revolutions per minute [5]. The main part of the dental air turbine is its high speed rotor head consisting of a casing with air inlet and outlet nozzles, impeller, spindle, chuck and ...

    Get Price
  • Patents Assigned to Sirona Dental Systems GmbH - Justia ...

    2013-10-3u2002·u2002Abstract: The invention relates to a method for checking tooth positions, wherein an initial three-dimensional volume exposure (1) of teeth (2, 3, 4) to be checked is implemented, wherein the position and orientation of the teeth (2, 3, 4) to be checked are determined based on the initial volume exposure (1); wherein the teeth to be checked are natural teeth (2, 3, 4) comprised of tooth stumps ...

    Get Price
  • Q. L. Morrison 3-D Laser Anemometer Measurements in a ...

    dimensional laser-Doppler anemometer to make the measurements. The Reynolds and Taylor numbers were 30,000 and 12,000. Demko et al. [10] performed crossed hotxad wire measurements in a large-scale seal (0.00635 m clearance) as well. These measurements resulted in axial and azimuthal velocity distributions over the teeth and at three axial locations

    Get Price
  • A Hybrid Analytical and FE-based Method for Calculating AC ...

    2019-9-13u2002·u2002around the teeth and open slots, and with a coreless stator structure, respectively. II. NUMERICAL MODELS Two- and three-dimensional FEA models can be used to estimate the flux density and the losses. Two-dimensional FEA is easier to set up and is faster, making it particularly suitable for large-scale parametric and optimization studies. However,

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  • Enamel interproximal reduction during treatment with clear ...

    2021-4-19u2002·u2002The Invisalign appliance was introduced for the first time to the public in the late 1990s by Align Technology as an innovative method to straightening teeth without braces [].This system uses impressions or intraoral scans which are converted through stereolithographic technology (.stl) into virtual models and then launched with the ClinCheck software: a three-dimensional …

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  • Application Note - Honeywell

    7.0 Gear Tooth Configuration For every gear tooth configuration, there is an optimum pole piece size and shape to achieve maximum output voltage from the sensor. This relationship is noted in Figure 7. Figure 7. Optimum Gear Tooth Configuration A = Dimension of top tooth E = Clearance B = Height of tooth F = Gear thickness

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  • Dental Product Training

    Released: 5/20/20. View Full Description ». Orabloc® delivers a rapid onset time of one to nine minutes and a reliable duration of up to one hour. It has a 33% longer shelf life, less epinephrine overages than anesthetic made with a terminal sterilization process, and requires less volume than lidocaine anesthetics.

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  • A comparative study on the dynamic behaviour of 10 MW ...

    2020-12-21u2002·u2002Three-dimensional tubulent wind files are generated by the NREL TurbSim program 19 according to the Kaimal turbulence model for Class B turbines that is defined in the IEC 61400-1. 20 The normal turbulence model and normal wind profile model are considered for all of the load cases.

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  • Introduction to Rotor Dynamics Analysis as API Standard ...

    2019-9-19u2002·u2002Introduction to Rotor Dynamics Analysis as API Standard related to Centrifugal Machines -Part II-Overview of API RP684 - Lateral Analysis Published on September 19, 2019 September 19, 2019 • 32 ...

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  • Download Free 3D Models - Royalty Free - Sketchfab

    Download free 3D models available under Creative Commons on Sketchfab and license thousands of Royalty-Free 3D models from the Sketchfab Store.

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  • Coupling of substructures for dynamic analyses.

    2017-1-19u2002·u2002Three-Dimensional Vibration of the Crankshaft of a Large Marine Diesel Engine Under a Mixed Thermo-Elastic-Hydro-Dynamic Lubrication Coupling Between Flexible Crankshaft and Engine Block 23 January 2018 Journal of Engineering for Gas Turbines and Power, Vol. 140, No. 6

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  • (PDF) [Dixon S.L., Hall C.A.] Fluid Mechanics and Thermo ...

    Academia.edu is a platform for academics to share research papers.

    Get Price
  • Three-dimensional soft tissue evaluation after rapid ...

    2021-5-3u2002·u2002Three-dimensional soft tissue evaluation after rapid maxillary expansion and mandibular midline distraction osteogenesis ... is a well-known approach to correcting maxillary transverse deficiency while providing an increase in arch width to resolve mild to moderate crowding. 2 ... Expansion of the dental arches, tooth extraction, ...

    Get Price
  • Aerodynamic wind-turbine rotor design using surrogate ...

    2016-8-1u2002·u2002A surrogate-optimization framework using a three-dimensional viscous-inviscid interaction code (MIRAS) for the aerodynamic design of wind-turbine rotors is proposed. To verify the methodology, a model wind-turbine rotor was designed using the proposed method and compared to blade element momentum (BEM) approaches.

    Get Price
  • A comparison of two- and three-dimensional S809 airfoil ...

    1990-2-1u2002·u2002A comparison of two- and three-dimensional S809 airfoil properties for rough and smooth HAWT (horizontal-axis wind turbine) rotor operation

    Get Price
  • Characterizing the performance of dental air-turbine ...

    2008-1-1u2002·u2002The first air-powered dental engine design was patented in 1868 1 although in fact this was not a turbine but effectively a lobe pump operated in reverse. It was intended to be operated by mouth, foot bellows, or a compressed air vessel. The first true turbine dental handpiece, with a 13-bladed rotor, was patented in 1874, 2 with similar ...

    Get Price
  • Parameters matching analysis of the stator and rotor for ...

    To improve the power generation efficiency, the parameters matching analysis method for the downhole generator with asymmetric turbine is established on basis of the experimental design theory, response surface methodology and orthogonal experimental design. Firstly, according to the theoretical analysis, the computational domain model is built by the three-dimensional modeling software.

    Get Price
  • E 26 Three Dimensional Modeling for Design Fall 2017

    2019-2-3u2002·u20026 9/26 Aerodynamics of wind turbine Work on the blade design as a group and turn in Rotor blade design, angle of 2-3 pages of your concept designs (sketches) attack, profile,… at the end of the lab.period (10 pts) 7 Lab. work #510/3 Wind turbine tower structure design –due Tu. 10/10 by 11:00 pm

    Get Price
  • Computations of a Film Cooled Turbine Rotor Blade With

    2015-2-18u2002·u2002A numerical investigation of film cooling on a turbine rotor blade has been carried out. The computations were performed with a 3D-Navier-Stokes code utilizing an unstructured solution adaptive grid methodology (Dawes (1992)). The code uses a low Reynolds number k-epsilon model for prescribing the Reynolds stresses.

    Get Price
  • Traditional Design of Cage Rotor Induction Motors

    2014-6-24u2002·u2002Current density in the rotor bar is higher closer to air-gap. In traditional designs of 60 Hz line-fed induction machines, skin effect is represented by correction coefficients K R and K X for bar resistance and slot leakage inductance. (Ref. [1] Boldea) K R and K X depend on the shape and size of the rotor slot, the conductor

    Get Price
  • A Numerical Study on Performance of Dental Air Turbine ...

    2017-9-1u2002·u2002The rotor blades rotate at high speed, and the bur is applied to the teeth. Usually, high speed air-turbine dental handpieces operate at 200,000 to 400,000 revolutions per minute [5]. The main part of the dental air turbine is its high speed rotor head consisting of a casing with air inlet and outlet nozzles, impeller, spindle, chuck and ...

    Get Price
  • Patents Assigned to Sirona Dental Systems GmbH - Justia ...

    2013-10-3u2002·u2002Abstract: The invention relates to a method for checking tooth positions, wherein an initial three-dimensional volume exposure (1) of teeth (2, 3, 4) to be checked is implemented, wherein the position and orientation of the teeth (2, 3, 4) to be checked are determined based on the initial volume exposure (1); wherein the teeth to be checked are natural teeth (2, 3, 4) comprised of tooth stumps ...

    Get Price