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  • Three-Dimensional Navier-Stokes Simulations of Turbine ...

    2014-6-16 · o f two-dimensional flow i n th e midspa region. Th results o Ref. 11 were then obtained by solving the thin-layer Navier-Stoke s equation in two dimensions. In the present study the approximation of two-dimensional-ity is removed, and three-dimensional airfoil geometries are used. In addition , the hub outer casing and rotor-tip clear-

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  • Dimensional Accuracy of Dental Models for Three

    Previous studies on accuracy of three-dimensional (3D) printed model focused on full arch measurements at few points. The aim of this study was to examine the dimensional accuracy of 3D-printed models which were teeth-prepped for three-unit fixed prostheses, especially at margin and proximal contact areas. The prepped dental model was scanned with a desktop scanner.

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  • Three-Dimensional Navier-Stokes Heal Transfer

    2020-8-6 · turbine in a large scale rotating rig over a range of Reynolds numbers and flow coefficients. Full span heat transfer data were obtained on both surfaces of the ro-tor, and on the hub endwall. The heat transfer analysis was done using the steacly-state three-dimensional analysis developed by Chiton(11-12). This is an explicit, tlnite-difference,

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  • OSA | Three-dimensional beam profiling used to ...

    Two-dimensional (2D) beam profiling is an emerging technique used to characterize the beam homogeneity in dental light-curing units (LCUs). This project developed a method to combine multiple 2D beam profiles that had been measured along the beam path to create a 3D profile of the beam. This allowed a quantitative investigation of beam divergence and homogeneity at different distances from …

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  • Three-dimensional dental cast analyzing system using

    The purpose of this article is to introduce the outline of our newly developed three-dimensional dental cast analyzing system with laser scanning, and its preliminary clinical applications. The system is composed of a measuring device with a slit-ray laser projector and two sets of coupled charged d …

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  • History | MORITA

    Introduced the '3DX Multi-imaging Micro CT FPD8', a high resolution (80 μm) 3D CT unit with a wide exposure field (80xH80 mm), that can can the dental arch as wekk as other cervical and cranial areas. Sold under the name '3D Accuitomo F17', this unit has a …

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  • Three-dimensional simulation of unsteady flows in a

    2016-5-12 · Three-dimensional numerical simulation for a prototype pump-turbine has been performed to investigate the transient characteristics and flow behaviors in the startup process. The rotational speed, which varies with runner torque and inertial of the rotating systems, is obtained by hydraulic-force coupling method.

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  • Suction device for dental treatment units -

    A suction device with a suction hose and suction cannula for dental treatment units for the sucking off of the spray mist during dental treatment processes in which the suction hose is placed on or in a flexible tube, which is movable in three-dimensional manner, so that the suction hose can be brought into the treatment position and can be positioned there without any need for a dental nurse.

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  • The three-dimensional arrangement of the myocytes

    Histological examination, however, shows that the only muscular unit to be found within the myocardial walls is the cardiac myocyte itself. Our own investigations show that, rather than forming a continuous band, or being arranged as sheets, the myocytes are aggregated together as a three-dimensional mesh within a supporting matrix of fibrous ...

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  • dental chair dimensions | Treedental

    1.Luxury patient chair with safety system 1 set 2.Sewed eco-leather cushion 1 set 3.Water unit box with color painting 1 set 4.Top mounted instrument tray 1 set 5.Main switch for water/air/power 1 set 6.Foot controller, 4-way joystick 1 set 7.3-way syringe (cold/hot water) 2 sets 8.LED operating light with sensor 1 set 9.Left and right armrest 1 set 10.Imported medical grade pipeline 1 set 11.Double articulate …

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  • Three-dimensional dental cast analyzing system using

    1996-10-1 · The dental cast is projected and scanned with a slit-ray laser beam. The raster coordinates of the target are determined with an image processor. Triangulation is applied to determine the location of each point. Generation of three-dimensional graphics of the dental cast takes approximately 40 minutes. About 90,000 sets of X,Y,Z coordinates are ...

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  • Three-dimensional finite element analysis of anterior

    A three-dimensional finite element model of a two-unit cantilever RBFDP replacing a maxillary lateral incisor … The aim of this study was to evaluate the influence of different framework materials on biomechanical behaviour of anterior two-unit cantilever resin-bonded fixed dental prostheses (RBFDPs).

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  • Modelling tidal stream turbines in a three-dimensional ...

    2017-12-1 · The turbine simulating platform is developed based on a three-dimensional large scale modelling system. When considering potential future work in the area of three-dimensional sediment transport modelling, the herein proposed treatment of flow velocity and turbulence level leading to accurate prediction of vertical flow structure and mixing in ...

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  • Three-dimensional unsteady stator-rotor interactions

    2021-2-15 · Three dimensional optimization of small-scale axial turbine for low temperature heat source driven organic Rankine cycle Energy Convers Manag , 133 ( 2017 ) , pp. 411 - 426 Article Download PDF View Record in Scopus Google Scholar

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  • Darrieus Wind Turbine Blade Unsteady Aerodynamics: a

    2017-4-10 · 119the optimal set-up of these simulations. Two-dimensional RANS analyses, suitably corrected 120for three-dimensional (3D) effects, such as struts resistive torque and blade tip losses, have 121been used to estimate the turbine overall performance [26] and predominantly 2D phenomena,

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  • A three-dimensional analysis of stall-delay on a ...

    1991-2-1 · Journal of Wind Engineering and Industrial Aerodynamics, 37 (1991) 1-14 1 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands A three-dimensional analysis of stall-delay on a horizontal-axis wind turbine D.H. Wood Department of Mechanical Engineering, University of Newcastle, Newcastle, NSW, 2308, Australia (Received July 21, 1989; accepted in revised form May …

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  • Emerging trends in endodontic irrigation - Dental Journal

    Three-dimensional obturation of the root canal system. ... fluid delivery unit intended to be attached to dental handpieces to deliver irrigation during endodontic procedures. During the ... 2mm with an “up and down” action every six seconds as each canal is flushed. This up and down action removes micro-gas

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  • making work easy 1 - Renfert

    2020-2-19 · dental practice, patients and specialists 4 Creation of photos and video sequences Optimum assessment of object structures in 3D mode The EASY view 3D’s three-dimensional mode enables easy hand-eye coordination and a natural working position. Its three-dimensional spatial representation is perfect for critically examining work objects.

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  • High-precision 3D metrology | fast, precise

    Open the catalog to page 1. Wide Range of Features from Volume Slicing to Implant Presentations i-Dixel imaging software offers a range of features from the initial exposure to the final diagnosis allowing for a thorough examination. Software features include a drawing function in the mandibular canal, presentation for implant therapy, and ...

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  • Three-dimensional finite element analysis of metal

    A 3-dimensional finite element model of a 3-unit FDP loaded with 154 N (at a 45-degree angle to the incisal edge of the pontic) was used to analyze stress distribution in the FDP and at the adhesive interface. A finite element analysis was used in calculation of the maximum principal stress and displacement. Results: The maximum displacement of ...

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  • Calculation of a three-dimensional turbulent cascade

    A three-dimensional steady incompressible viscous flow through a plane cascade of turbine blades has been analyzed through a numerical method based on the Navier-Stokes equation. Particular attention is paid to the prediction of secondary flows occurring due to the endwall boundary layer and the blade geometry. A standard k-ε model is used for the modelling of Reynolds stress and boundary ...

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  • Three-dimensional finite element analysis of anterior

    A three-dimensional finite element model of a two-unit cantilever RBFDP replacing a maxillary lateral incisor was created. Five framework materials were evaluated: direct fibre-reinforced composite (FRC-Z250), indirect fibre-reinforced composite (FRC-ES), gold alloy (M), glass ceramic (GC), and zirconia (ZI).

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  • Transient simulation of hydropower station with ...

    three-dimensional flow calculation method. 2. Calculation method In order to study the interaction between the transient flow in pipe and the unsteady turbulent flow in turbine, three methods were used to simulate the transient process of he hydraulic power plant. The t three …

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  • Three-dimensional CAD/CAM reconstruction of the

    Three-dimensional CAD/CAM reconstruction of the iliac bone following DCIA composite flap harvest Int J Oral Maxillofac Surg . 2020 Jun 23;S0901-5027(20)30201-0. doi: 10.1016/j.ijom.2020.05.014.

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  • A head-mounted three dimensional display*

    2020-6-30 · A head-mounted three dimensional display* by IVAN E. SUTHERLAND** The University of Utah Salt Lake City, Utah INTRODUCTION The fundamental idea behind the three-dimensional display is to present the user with a perspective image which changes as he moves. The retinal image of the real objects which we see is, after all, only two-dimensional.

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  • Three dimensional geometry | Class 12 math (India) |

    Unit: Three dimensional geometry. Class 12 math (India) Unit: Three dimensional geometry. 0. Legend (Opens a modal) Possible mastery points. ... Level up on all the skills in this unit and collect up to 1900 Mastery points! Start Unit test. About this unit. Grade12 chapter on 3D.

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  • Aspects of Computer Simulation of Liquid-Fueled

    2012-5-23 · Measurement and simulation of the three-dimensional flow pattern and particle removal efficiencies in a large floating closed sea cage with multiple inlets and drains ... Setting Up a Numerical Model of a DAF Tank: Turbulence, Geometry, and Bubble Size ... Liquid-fuel/air premixing in gas turbine combustors: experiment and numerical simulation ...

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  • Three Dimensional Training Limited - Home | Facebook

    Three Dimensional Training Limited, Birkenhead, United Kingdom. 254 likes · 8 talking about this. 3D Training is taking a different perspective on delivering business training and qualifications.

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  • Metal Additive Manufacturing: A Review | SpringerLink

    2014-4-8 · This paper reviews the state-of-the-art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape.

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  • Three dimensional resonant vibrations and stresses in ...

    2020-10-13 · Three dimensional resonant vibrations and stresses in turbine ... Patrick J., 'Three dimensional resonant vibrations and stresses in turbine blade groups' (1981). Thesis. Rochester Institute of Technology. Accessed from This Thesis is brought to you for free and open access by RIT Scholar Works. ... per unit. length. of. blade, lb./in. q. notch ...

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  • METHOD AND DEVICE FOR THREE-DIMENSIONAL

    The image analyzer unit 60 generates a three-dimensional model of the dental model 5 by means of triangulation methods using the measurement surfaces recorded. The three-dimensional model may then be displayed as needed on a display device 65. In one embodiment, the display device 65 is coupled to the image analyzer unit 60. In addition, the ...

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  • Experimental Investigation of Three-Dimensional

    2006-3-19 · “Aerodynamic Influence Coefficients on an Oscillating Turbine Blade in Three-Dimensional High Speed Flow” Paper presented at the 15th Symposium on Measuring Techniques in Transonic and Supersonic Flows in Cascades and Turbomachines, Florence, Italy 2 Vogt, D.M., Fransson, T.H., 2002 “A New Turbine Cascade for Aeromechanical Testing”

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  • OP 3D™ Pro The Most Comprehensive 3-in-1 ... -

    2021-6-27 · The ORTHOPANTOMOGRAPH OP 3D Pro, by KaVo, crystallizes the 50-year heritage of a legendary product family. It uses the latest in 3D and 2D technologies, for your benefit. The modern 3-in-1 platform’s flawless design and versatility set the benchmark for whole maxillofacial imaging. KaVo ORTHOPANTOMOGRAPH OP 3D Pro - The one for all your needs with Low Dose Technology™ and …

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  • Research Article Three-Dimensional Finite Element

    2019-7-31 · Research Article Three-Dimensional Finite Element Analysis of Anterior Two-Unit Cantilever Resin-Bonded Fixed Dental Prostheses FilipKeulemans, 1 AkikazuShinya, 2,3 LippoV.J.Lassila, 2 PekkaK.Vallittu, 2 CornelisJ.Kleverlaan, 4 AlbertJ.Feilzer, 4 andRoelandJ.G.DeMoor 1 Department of Restorative Dentistry and Endodontology, Dental School, Ghent University Hospital, Ghent University,

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  • Three-dimensional numerical simulation of dental

    Three-dimensional numerical simulation of dental implants as orthodontic anchorage. Gallas MM(1), Abeleira MT, Fernández JR, Burguera M. Author information: (1)Department of Adult Comprehensive Dentistry, University of Santiago de Compostela, Spain. [email protected]

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  • PAPER OPEN ACCESS Determination of Scaled Wind

    Determination of Scaled Wind Turbine Rotor Characteristics from Three Dimensional RANS Calculations To cite this article: S Burmester et al 2016 J. Phys.: Conf. Ser. 753 082003 View the article online for updates and enhancements. This content was downloaded from IP address 207.46.13.92 on 16/12/2019 at …

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  • US9737381B2 - Desktop three-dimensional scanner

    2020-5-7 · A Heterometallic Three-Dimensional Metal-Organic Framework Bearing an Unprecedented One-Dimensional Branched-Chain Secondary Building Unit. Molecules ( IF 3.267 ) Pub Date : 2020-05-07 , DOI: 10.3390/molecules25092190

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  • Metal Additive Manufacturing: A Review | SpringerLink

    In a desktop three-dimensional scanner for dental use of the related art, a two-axis rotation motion unit, on which a target object can be placed and rotated in order to image the entire shape of the target object, is coupled to the scanner, and thus, when a subject is placed on the imaging stage and is rotated along the horizontal axis of rotation of the stage, the subject is dropped from the ...

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  • Three-dimensional system | British Dental Journal

    E & Q Plus is a unique, three-dimensional root canal filling system manufactured by Meta Dental Company and is available exclusively in the UK through Red Apple Dental Supplies.

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  • Three-dimensional CFD simulation of the runaway

    Three-dimensional unsteady CFD simulation method is established to simulate runaway transient of a propeller turbine model. Through three-dimensional turbulent numerical calculation,the spent time and the maximum runaway speed are attained while the generating unit enters runaway state,and the variation of inner flow and varying curves of unit rotate speed,flow rate and the static pressure of ...

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  • Transient simulation of hydropower station with ...

    2012-11-26 · Transient simulation of hydropower station with consideration of three-dimensional unsteady flow in turbine. W D Huang, H G Fan 1 and N X Chen 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and Environmental Science, Volume 15, SESSION 3: HYDRAULIC SYSTEMS Citation W D Huang et al 2012 IOP Conf. Ser.: Earth Environ.

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  • Tip rail with cooling structure using three dimensional ...

    2018-12-3 · A tip for a turbine component, turbine rotor blade or tip of a blade, is disclosed. The tip includes a tip plate configured to be coupled at a tip end of an airfoil chamber; and a tip rail extending radially from the tip plate, the tip rail disposed near or at a periphery of the tip plate. The trip rail includes a cooling structure constituting at least a portion of the tip rail.

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  • OP 3D™ Pro The Most Comprehensive 3-in-1 ... -

    2021-6-27 · The ORTHOPANTOMOGRAPH OP 3D Pro, by KaVo, crystallizes the 50-year heritage of a legendary product family. It uses the latest in 3D and 2D technologies, for your benefit. The modern 3-in-1 platform’s flawless design and versatility set the benchmark for whole maxillofacial imaging. KaVo ORTHOPANTOMOGRAPH OP 3D Pro - The one for all your needs with Low Dose Technology™ and …

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  • The effect of dental LED light‐curing unit

    2018-10-23 · The objective of this study was to evaluate the effect of two photoactivation modes of dental LED light-curing unit (LCUs) (conventional and “Soft Start” mode) on surface texture parameters of two dental resin-based nanocomposites. LED LCUs were considered as standard light-curing devices in contemporary dental practice.

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  • Evaluation of Stress Distribution in Tooth‐Supported

    2020-1-23 · Purpose. To evaluate the influence of the framework designs on the stress distribution within tooth‐supported partially veneered fixed dental prostheses (FDPs) made of translucent zirconia under simulated loads using a three‐dimensional finite element analysis (3D‐FEA).

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  • Three Dimensional Geometry -

    ReTxture-3D Three-Dimensional Microscope. The instrument is highly integrated with a nanoscale Z-axis focusing platform, high-precision grating ruler, imaging unit, coaxial light source, and 3D measurement software. The measured information can be viewed in three-dimensional mode through the powerful software then the shape measurement and ...

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  • What are 3 Dimensional Shapes? - [Definition, Facts &

    2020-7-29 · Three Dimensional Geometry - Part I It is the angle between intersecting lines drawn parallel to each of the skew lines. Where θ is tghe acute angle between lines , l˜ , m˜ , n˜ are direction cosines of line 1 l˚ , m˚ , n˚ are direction cosines of line 2 a˚ , b˚ , c˚ are direction ratios of line 1 a˛ , b˛ , c˛ are direction ratios ...

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