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  • Optimum Design of the Dental Air-Turbine Handpiece

    2020-1-22 · An air-turbine and associated air supply tube was optimized as a dental air-turbine handpiece system. The system consists of an air-turbine with an impeller and a housing, and an air supply tube which supplies compressed-air to the air-turbine. The flow characteristics of the dental air-turbine handpiece system were investigated using ANSYS CFX. The study aimed to find the significant design ...

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  • A Numerical Study on Performance of Dental Air

    2017-9-1 · Dental air turbine handpiece has evolved significantly over the years and it remains a vital part of dentistry today. It has been widely used in clinical dentistry as the main cutting tool for more than 50 years [1]. The handpiece is a standard instrument in dentistry that is used to remove carries, cavity preparation, tooth tissue grinding and ...

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  • Comparison of two-equation turbulence models for

    2012-5-17 · Wall shear stress and near-wall flows in the stenosed femoral artery. ... Optimum design of a saw-tooth-shaped dental air-turbine using design of experiment. ... Assessment of eight turbulence models for a three-dimensional boundary layer involving crossflow and streamwise vortices.

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  • Soelberg | 3D Wall Panel Solutions for a three

    2021-7-26 · Soelberg is the leading manufacturer of 3D wall panels, acoustic panels, decorative wood paneling and wall tiles for high impact design. Life in 3D.

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  • Dental insertion element of non-cylindrical shape -

    2004-7-21 · In the three-dimensional shape, the dental insertion element is composed of two part-cylinders cut parallel to their respective cylinder axes, corresponding to the first and second circle-lines 5, 6. In the three-dimensional shape, the joins between the first and second circle-lines 5 , 6 , in the form of the ridges 3 , 4 , correspond, in each ...

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  • Regeneration of pulpo-dentinal–like complex by a

    Dental pulp is critical to maintain the vitality of a tooth. Regeneration of pulpo-dentinal complex is of great interest to treat pulpitis and pulp necrosis. In this study, through three-dimensional spheroid culture, a group of unique multipotent stem cells were identified from mouse dental papilla called multipotent dental pulp regenerative stem cells (MDPSCs).

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    Mastars provides online custom 3D printing service with rapid production and affordable prices such as SLS and SLA. We can help to enhance the possibilities and capabilities of your components, make production more flexible. Get in touch and request a quote now.

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  • 3D Printing Services - SLA and SLS 3D Printing Quote ...

    In Introduction to Aerospace Materials, 2012. 6.4.1 Investment casting. Investment casting is generally used for making complex-shaped components that require tighter tolerances, thinner walls and better surface finish than can be obtained with sand casting. The distinguishing feature of investment casting is the way the mould is made. A pattern of the part is made with wax, which is then ...

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  • Foshan Factory Portable Dental Turbine Unit Wall

    Foshan Factory Portable Dental Turbine Unit Wall Hanging Type With 3 Way Syringe And Weak Suction 2 Hole 4 Hole , Find Complete Details about Foshan Factory Portable Dental Turbine Unit Wall Hanging Type With 3 Way Syringe And Weak Suction 2 Hole 4 Hole,Portable Turbine Unit,Dental Turbine,Dental Turbine Unit from Other Dental Equipments Supplier or Manufacturer-Foshan XS Medical Equipment …

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  • Three‐dimensional wall structure and the innervation

    2002-1-9 · Three‐dimensional wall structure and the innervation of dental pulp blood vessels. Tadahiko Iijima. Corresponding Author. E-mail address: [email protected]‐u.ac.jp. Department of Oral Anatomy and Cell Biology, Faculty of Dental Science, Kyushu University, Fukuoka 812‐8582, Japan ...

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  • Three‐dimensional wall structure and the innervation

    2002-1-9 · Abstract The involvement of neural components in plasma extravasation and blood flow in the dental pulp has been established by pharmacological and …

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  • Non-Axisymmetric Turbine End Wall Design: Part I —

    2020-1-22 · An air-turbine and associated air supply tube was optimized as a dental air-turbine handpiece system. The system consists of an air-turbine with an impeller and a housing, and an air supply tube which supplies compressed-air to the air-turbine. The flow characteristics of the dental air-turbine handpiece system were investigated using ANSYS CFX.

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  • Optimum Design of the Dental Air-Turbine Handpiece

    2018-11-15 · two-dimensional flat plate correlation for increasing boundary layer three-dimensionality. The combined effects of a streamwise vortex and a pressure-driven three-dimensional boundary layer were considered by Shizawa and Eaton [7]. A streamwise vortex with near-wall induced velocity in the same direction as the cross-

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  • Comparison of the Three- Dimensional Boundary Layer

    York and Leylek [9] applied the Fluent 5 code in the conjugate analysis of a three-dimensional gas turbine vane at two different engine-realistic operating conditions. Two models for turbulence ...

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  • Three-Dimensional Conjugate Heat Transfer

    2019-5-14 · In this study, the performance of a stage high-pressure turbine (HP turbine) is calculated out in three dimensions. In the HP turbine guide vane, the trailing edge cutback configuration is adopted. Through three-dimensional simulation, the complex flow around the trailing edge with cutback cooling configuration is presented in this study, and ...

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  • Research on the Influence of Guide Blade Trailing

    2021-6-1 · The two-dimensional simulations showed that for a turbine spacing of 1.2D, the power coefficient was 15% higher for both turbines. Additionally, the three-dimensional simulations found an increase of at least 8%. Finally, Brownstein et al. conducted experiments of a pair of 5-bladed VAWTs in an open circuit, subsonic wind tunnel.

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  • dental turbine unit | Treedental

    Rating: 97 % of 100. 4 Reviews Add Your Review. Wall Mounted Type, Work With Compressor, with 3 way syringe 2 pcs Handpiece Adapter, work with Compressor, dental turbine unit. In stock. SKU. TM-102. 119.00. Bulk Price:

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  • Analysis of the attachment and differentiation of three ...

    1. Int J Oral Maxillofac Implants. 2010 Jul-Aug;25(4):722-8. Analysis of the attachment and differentiation of three-dimensional rotary wall vessel cultured human preosteoblasts on dental implant surfaces.

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  • Three dimensional flow at the junction between a

    Three dimensional flow at the junction between a turbine blade and end-wall. Three dimensional flow at the junction between a turbine blade and end-wall. Now on home page. ads; Enable full ADS view . Abstract Citations (1) References (1) Co-Reads Similar Papers ...

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  • Turbulence models for near-wall and low Reynolds

    2012-5-17 · A three-dimensional simulation of coupled turbulent flow and macroscopic solidification heat transfer for continuous slab casters. ... Numerical Simulation of Turbine Blade Boundary Layer and Heat Transfer and Assessment of Turbulence Models. ... Turbulence anisotropy and near-wall modeling in predicting three-dimensional shear-flows.

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  • The development of a vertical axis tidal current turbine

    2013-11-22 · From the simulations the two bladed turbine fitted with the S-1046 hydrofoil showed the highest performance but was struggling with an unfavorable oscillating torque. In the light of this the three bladed turbine fitted with the S-1046 hydrofoil with a chord of …

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  • Study of Three-Dimensional Viscous Flow Field in

    2015-2-6 · The complex three-dimensional flow field in an axial-flow impeller incorporating high-Reynolds-number k-ε turbulence model is studied in this paper. The fully three-dimensional Reynolds averaged Navier-Stokes equations are solved. A computational procedure has been developed for predicting three-dimensional incompressible separated turbulent ...

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  • Performance Improvement of a Micro Impulse Water

    The study on structural design and efficiency improvement of the micro impulse water turbine with the super-low specific speed has rarely been reported in literature. In this paper, a micro impulse water turbine was optimized on the base of the orthogonal array of L 18 (3 7 ) with six factors. The range analysis and variance analysis were conducted to present the significance ranking of ...

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  • STEEL CASTINGS HANDBOOK - SFSA

    Wall-modeling for large-eddy simulation of flows around an axisymmetric body using the diffuse-interface immersed boundary method. Applied Mathematics and Mechanics, 40, 305-320. Yang, X., & Sotiropoulos∗, F. (2019). Wake characteristics of a utility-scale

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  • Amazon.com: bathroom wall decor

    2018-6-4 · Wall thicknesses of 0.060” (1.5 mm) and sections tapering down to 0.030” (0.76 mm) are common for investment castings. Draft Draft is the amount of taper or the angle, which must be allowed on all vertical faces of a pattern to permit its removal from the sand mold without tearing the mold walls.

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  • DEVELOPMENT OF MESO-SCALE MACHINE TOOL (mMT)

    Three-dimensional features are machined on one of the testbeds ... with holes 125 µm in diameter and wall thickness ... spindles used in the dental industry. These air-turbine spindles are very ...

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  • US5121329A - Apparatus and method for creating

    Apparatus incorporating a movable dispensing head provided with a supply of material which solidifies at a predetermined temperature, and a base member, which are moved relative to each other along 'X,' 'Y,' and 'Z' axes in a predetermined pattern to create three-dimensional objects by building up material discharged from the dispensing head onto the base member at a controlled rate.

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  • What is 3D printing? How does a 3D printer work?

    3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the object is created. Each of these layers can be seen as a ...

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  • US4575330A - Apparatus for production of three

    A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, successive adjacent laminae, representing corresponding successive adjacent cross ...

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  • An Interior Point Algorithm for Large-Scale Nonlinear ...

    2006-7-31 · (2019) Three-Dimensional (3D) Reconstruction of Dried Vertebrae from Bi-planar Radiographs. 2019 International Conference on Image and Vision Computing New Zealand (IVCNZ) , 1-6. (2019) A Big Root Approximation of Site‐Scale Vegetation Water Uptake.

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    Food, Beverages & Tobacco. Furniture. Hardware

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  • Website KK – Fakultas Teknik Mesin dan Dirgantara –

    (f) three-dimensional construction for industrial components. Each of the main topics focuses on more specific applications, such as calculating crack growth and predicting the residual strength of aircraft structures, finite element analysis including non-linear analysis, bending analysis and testing of thin wall structures, and experimental ...

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  • [PDF] Effect of various grit burs on marginal integrity

    The purpose of this study was to evaluate the generation of enamel cracks and gaps at the cavosurface margin of resin composite restorations using various burs. Saucer-shaped cavities with a bevel were prepared on mid-coronal buccal or lingual surfaces of extracted human molars using a regular-grit round diamond bur, a fine-grit diamond bur, a superfine-grit diamond bur or a six-bladed ...

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  • Dental Turbine Unit 4 Hole 3 Way Syringe Wall

    China Dental Turbine Unit Wall Hanging Type Portable Testing Turbine, Find details about China Dental, Dental Product from Dental Turbine Unit Wall Hanging Type Portable Testing Turbine - ARTSPA INDUSTRIAL COMPANY LIMITED

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  • China Dental Turbine Unit Wall Hanging Type Portable ...

    2021-7-26 · Soelberg is the leading manufacturer of 3D wall panels, acoustic panels, decorative wood paneling and wall tiles for high impact design. Life in 3D.

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  • Soelberg | 3D Wall Panel Solutions for a three

    2012-5-23 · Calculation of three-dimensional viscous flows in turbomachinery with an implicit relaxation method. C. Hah; ... Wall-Normal-Free Reynolds-Stress Model for Rotating Flows Applied to Turbomachinery. ... Unsteady flow analysis in a high work turbine stage with two three-dimensional Navier-Stokes codes.

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  • Calculation of three-dimensional viscous flows in ...

    2019-5-6 · activities in the gas turbine community. The fl ow is inherently three dimensional due to the vane/blade passage geometry with features such as twisting of the vane/blade along the span, clearance between the blade tip and the shroud, fi lm cooling holes, and end wall …

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  • GTHandbook-final-edits-new

    Apparatus incorporating a movable dispensing head provided with a supply of material which solidifies at a predetermined temperature, and a base member, which are moved relative to each other along 'X,' 'Y,' and 'Z' axes in a predetermined pattern to create three-dimensional objects by building up material discharged from the dispensing head onto the base member at a controlled rate.

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  • US5121329A - Apparatus and method for creating

    YXLON industrial X-ray (DR) and computed tomography (CT) systems for non-destructive testing are designed to meet the most critical aerospace/defense standards and ensure the safe, reliable inspection of aircraft parts and materials. Quality specifications for turbine blades in aerospace are very rigorous.

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    58,794 Three Dimensional Reality Innovation. Wall Murals - Canvas Prints - Stickers. A person in virtual glasses flies to pixels. The man with glasses of virtual reality. Future technology concept. Modern imaging technology. Fragmented by pixels. Wall mural. Virtual augmented reality glasses concept with people learning and entertaining.

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