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  • Turbine from the 3D printer - Fraunhofer IFAM

    2019-9-17 · The customer can choose from Selective Electron Beam Melting, three-dimensional screen printing, Fused Filament Fabrication as well as three-dimensional stencil printing and dispensing at the site. Learn more about Additive Manufacturing at Fraunhofer IFAM Dresden.

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  • Accuracy of three-dimensional dental resin ... - Allen Press

    The purpose of this study was to compare the dimensional accuracy of FDM, Polyjet, and SLA printing technologies with that of orthodontic plaster models to elucidate which printing technology is most capable of replicating plaster models. ... Recipient(s) will receive an email with a link to 'Accuracy of three-dimensional dental resin models ...

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  • Three-dimensional effects and arm effects on modeling a ...

    Firstly, we compare the power coefficients obtained by using the numerical models (both two-dimensional and three-dimensional) with the experimental results reported by Templin .The basic specifications of the turbine are that the turbine is a one-blade turbine, the blade type is NACA0015 (curved blade, the detailed curvature can be found in Templin ), the solidity (Nc/R, where N and c denote ...

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  • Effect of the haptic 3D virtual reality dental training ...

    In Press, Corrected Proof What ... Background/purpose. The haptic 3D virtual reality dental training simulator has been drawn attention as a educational strategy in Covid-19 pandemic. The purpose of this study is to investigate the feature of the haptics simulator in comparison with a conventional mannequin simulator by analyzing the assessment ...

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  • Accuracy evaluation of a new three-dimensional ...

    The article introduces a new method for three-dimensional reproduction of edentulous dental casts, and wax occlusion rims with jaw relation by using a commercial high-speed line laser scanner and ...

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  • (PDF) 3D printing in dentistry - ResearchGate

    Three-dimensional (3D) printing in digital dentistry is one of the major developments in dentistry. It replicates the dental …

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  • Optimum Design of the Dental Air-Turbine Handpiece System ...

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

    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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  • Fluid Mechanics and Thermodynamics of Turbomachinery ...

    Publisher Summary. This chapter introduces the book on fluid mechanics and the thermodynamics of turbomachines. The book examines, through the laws of fluid mechanics and thermodynamics, the means by which the energy transfer is achieved in the chief types of turbomachines, together with the differing behavior of individual types in their operations.

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  • Introduction to Finite Element Analysis (FEA) or Finite ...

    The Purpose of FEA Analytical Solution • Stress analysis for trusses, beams, and other simple structures are carried out based on dramatic simplification and idealization: – mass concentrated at the center of gravity – beam simplified as a line segment (same cross-section) • Design is based on the calculation results of the idealized structure & a large safety factor (1.5-3) given by ...

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  • A Quasi-Three-Dimensional Turbomachinery Blade Design ...

    An example of the flow through a turbine nozzle guide vane is presented. Experimental data are compared with the results from the quasi-three-dimensional system, a fully three-dimensional program and an unlinked two-dimensional system. The results from the quasi-three-dimensional system are very encouraging.

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  • Three-Dimensional Unsteady Flow and Forces in Centrifugal ...

    This paper describes the numerical investigation of the centrifugal impeller response to downstream static pressure distortions imposed by volutes at off-design operations. An unsteady three-dimensional Euler solver with nonreflecting upstream and down-stream boundary conditions and phase-lagged periodicity conditions is used for this purpose.

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  • WES - Theory and verification of a new 3D RANS wake model

    Abstract. This paper details the background to the WakeBlaster model: a purpose-built, parabolic three-dimensional RANS solver, developed by ProPlanEn. WakeBlaster is a field model, rather than a single turbine model; it therefore eliminates the need for an empirical wake superposition model.

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  • Three-dimensional printing of stimuli-responsive hydrogel ...

    Three-dimensional printing and subsequent crosslinking of chitosan-polyethylene oxide-glycerol phosphate-zinc oxide nanoparticle (CPG-nZnO) gel. (a) 3D model of the designed circular disk scaffold (20 mm × 2 mm). (b) Layer-by-layer view of the STL file showing the toolpath for three-dimensional printing.

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  • Evaluation of three-dimensional biofilms on antibacterial ...

    Dental resin composites are the principal materials for tooth cavity restorations due to their excellent esthetics and direct-filling capabilities. 1,2,3,4 Composite restorations are bonded to ...

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  • Use of computer-aided three-dimensional prototyping to ...

    Three-dimensional printing, additive manufacturing, or rapid prototyping is a mechanical process whereby an object is produced by consecutively adding material in layers until a replica of the computer-modelled shape is recreated. 6 The process was initially patented by Chuck Hull in 1984, but concepts date back 100 years, sharing principles ...

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  • Ocean Engineering

    Study of three-dimensional air gun bubble pulsation and the surrounding fluid pressure with finite volume method S. Zhang, B.C. Khoo, A.-M. Zhang Article 108500

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  • The Best Industrial Metal and Plastic 3D Printers I 3D Systems

    ProX SLS 6100. Production-grade nylon 3D printer delivering best-in-class part quality, fast build times and automated production tools. ProX 800. SLA quality at high throughput to address the broadest range of applications. ProJet MJP 2500/2500 Plus. MultiJet Printing Quality, Speed and Ease of Use Made Accessible.

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  • Three-dimensional flow prediction in mould filling ...

    The aim of this work is to achieve a meshfree implementation for the numerical prediction of 3D flows during mould filling processes …

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  • Endodontics: Part 8 Filling the root canal system ...

    The purpose of a root canal filling, as illustrated in Figure 1, is to seal the root canal system to prevent: Microorganisms from entering and reinfecting the root canal system; Tissue fluids from ...

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  • Accuracy of three-dimensional dental resin ... - Allen Press

    The purpose of this study was to compare the dimensional accuracy of FDM, Polyjet, and SLA printing technologies with that of orthodontic plaster models to elucidate which printing technology is most capable of replicating plaster models. ... Recipient(s) will receive an email with a link to 'Accuracy of three-dimensional dental resin models ...

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  • Construction of three-dimensional tooth model by micro ...

    The study of dental morphology is essential in terms of phylogeny. Advances in three-dimensional (3D) measurement devices have enabled us to make 3D images of teeth without destruction of samples. However, raw fundamental data on tooth shape requires complex equipment and techniques. An online database of 3D teeth models is therefore indispensable. We aimed to explore the basic methodology for ...

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

    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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  • Wind Turbine Aerodynamic Modeling in Icing Condition ...

    To this purpose, a computational study on the aerodynamic performance of the full-scale NREL 5 MW rotor is performed. Three-dimensional (3D) steady Reynolds-averaged Navier–Stokes (RANS) simulations are performed for both clean and iced blade, as well as BEM calculations using two-dimensional (2D) computational fluid dynamics (CFD) sectional ...

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  • Three-dimensional reconstruction of systematic ...

    Compared with a 2D section, a three-dimensional (3D) model can reflect the spatial information of the components of organs, which is widely used for ascertaining 3D architectural information. 15 ...

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  • Comparison of post-operative three-dimensional and two ...

    The purpose of this study was to evaluate the post-operative three-dimensional (3D) femoral and tibial component positions in total knee arthroplasty (TKA) by the same co-ordinates’ system as for pre-operative planning and to compare it with a two-dimensional (2D) evaluation. Sixty-five primary TKAs due to osteoarthritis were included. A computed tomography (CT) scan of the femur and tibia ...

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  • Professor Robert J K Wood

    Phone: (023) 8059 4881 Email: [email protected] Professor Robert J K Wood FREng, CEng, FIMechE, FICorr, FIMMM, FHEA …

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  • Three Dimensional Printing Photos and Premium High Res ...

    Browse 4,306 three dimensional printing stock photos and images available, or search for three dimensional figure or three dimensional object to find more great stock photos and pictures. 3d printout - three dimensional printing stock pictures, royalty-free photos & images.

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  • 3DPrint.com

    DED and Large-Format Additive Manufacturing Markets: 2021-2030. June 28, 2021 . Report # SMP-AM-DED2021 …

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  • Three Dimensional Training Limited - Home

    Three Dimensional Training Limited, Birkenhead, United Kingdom. 277 likes · 7 talking about this. 3D Training is taking a different perspective on delivering business training and qualifications.

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  • Synea Turbines - W&H

    High-end technology for excellent preparation results: Both of the Synea dental turbine ranges are characterised by high performance, quality, optimal ergonomics and outstanding value for money. Synea Vision symbolises innovation with its sterilizable 5 x Ring LED+ and Synea Fusion promises top quality combined with unbeatable cost-efficiency.

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  • 3D Printing of Medical Devices

    3D printing is a process that creates a three-dimensional object by building successive layers of raw material. Each new layer is attached to the previous one until the object is complete.

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  • Three-dimensional analysis of molar ... - Allen Press

    The coordinate system used in three-dimensional analysis. Cone-beam computed tomography images were reoriented as perpendicular to the frontozygomatic suture line passing through nasion (A) and parallel to FH plane (B). The mandibular plane was defined by menton (Me) and gonion (Go) on both sides (C). N indicates nasion; Po, porion; Or, orbitale.

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  • A three-dimensional underwater sound propagation model for ...

    A three-dimensional (3D) underwater sound propagation model has been created using a high-resolution …

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  • Analysis of tooth movement in extraction cases using three ...

    Three-dimensional registration of the facial surface by methods which are currently in use is difficult because of …

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  • TURBODYNA: Centrifugal/Centripetal Turbomachinery Dynamic ...

    Instead of direct using of performances maps, source terms are added in Euler equation set to simulate the rotor. By comparing 1D modeling with three-dimensional (3D) computational fluid dynamics (CFD) results, it shows that rotor unsteadiness is indispensable for a better prediction. In addition, different variables response to pulse differently.

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  • EP0431924B1 - Three-dimensional printing techniques ...

    EP0431924B1 EP90313220A EP90313220A EP0431924B1 EP 0431924 B1 EP0431924 B1 EP 0431924B1 EP 90313220 A EP90313220 A EP 90313220A EP 90313220 A EP90313220 A EP 90313220A EP 0431924 B1 EP0431924 B1 EP 0431924B1 Authority EP European Patent Office Prior art keywords accordance binder particulate applying powder Prior art date 1989-12-08 Legal status (The legal status is an assumption and is not a ...

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  • Advanced Materials and Coatings Laboratory (AMCL) - Alion ...

    As a leading provider of commercial spacecraft thermal control products , AMCL has a 60-year history of experience in advanced thermal space coatings science and chemistry, an outstanding reputation for solving complex problems quickly, and a heritage of success for material and services.

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  • Technologies from a Company Known for Innovation

    Abrasives. 3M began as an abrasives manufacturer. For more than a century, we have refined our original technologies and complemented them with breakthrough inventions developed by other 3M businesses. Today, our abrasives rely on traditional strengths such as resin formulation, adhesives and coating, as well as the most modern technologies ...

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  • Generation of three-dimensional heart organoids

    Researchers from Tokyo Medical and Dental University (TMDU) use mouse embryonic stem cells to engineer three-dimensional functional heart organoids resembling the developing heart

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  • Three-Dimensional Printing of Patient-Specific Titanium ...

    In general, the three-dimensional printing of customized implants are expected to facilitate surgical operation, reduce application duration and improve precise restoration. Up until now, the application of three-dimensional printing of titanium fixation plates in jaw surgery has been available only at two centers globally.

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  • Three-Dimensional Accuracy of Implant and ... - Allen Press

    A passively fitting prosthesis is a precondition for the maintenance of osseointegration, and its use is dependent upon the fact that the bone-implant interface allows limited movement of 10 µm; therefore, it is unlike natural teeth, which are cushioned in alveoli by periodontal fibers.1 A misfit of superstructures generates initial stress and strain on implants; mechanical complications such ...

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  • Factors Affecting Dental Air-Turbine Handpiece Bearing ...

    The turbine assembly free-running speed at 2.0 bar and bearing resistance were measured at baseline and after every 10 cycles until failure using a purpose-made instrument (Darvell-Dyson Handpiece Tester, Dental Materials Science, University of Hong Kong). 14 Each test condition was applied, as appropriate, according to the following procedures.

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  • EP0431924B1 - Three-dimensional printing techniques ...

    EP0431924B1 EP90313220A EP90313220A EP0431924B1 EP 0431924 B1 EP0431924 B1 EP 0431924B1 EP 90313220 A EP90313220 A EP 90313220A EP 90313220 A EP90313220 A EP 90313220A EP 0431924 B1 EP0431924 B1 EP 0431924B1 Authority EP European Patent Office Prior art keywords accordance binder particulate applying powder Prior art date 1989-12-08 Legal status (The legal status is an assumption and is not a ...

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  • Stress Distribution on the Prosthetic Screws ... - Allen Press

    (b) Three-dimensional model in Abaqus software. The abutments were connected to the fixtures, and the metal framework was connected to the abutments as shown in Figure 1 . The metal framework with 6-mm width and height extended up to the first molar and had the form of an ideal arch made using an orthodontic arch wire that overlapped the margin ...

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  • EP0431924A2 - Three-dimensional printing techniques ...

    A process for making a component by (A) depositing a first layer of a powder material in a confined region and then (B) depositing a binder material to selected regions of the layer of powder material to produce a layer of bonded powder material at the selected regions. Such steps are repeated a selected number of times to produce successive layers of selected regions of bonded powder material ...

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  • Three-dimensional interactions between a finite-span ...

    A complementary experimental and numerical investigation was performed to study the three-dimensional flow structures and interactions of a finite-span synthetic jet in a crossflow at a chord-based Reynolds number of 100,000 and a 0° angle of attack. Six blowing ratios in the range of 0.2–1.2 were considered.

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  • Characterization of Metal Powders Used for Additive ...

    measured various particle size and shape parameters and gave three-dimensional (3-D) images, XRD measured particle crystalline phases, SEM gave quasi-3-D images at magnifications and resolutions significantly better than did XCT, and XPS gave a measurement of chemical state of and concentration of elements on the powder surface.

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  • Dongsheng ZHANG

    A three-dimensional (3-D) DIC system has been developed and applied to examining the motion of bones in the human …

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  • Industrial Applications of 3D Printing: The Ultimate Guide ...

    The aerospace and defence (A&D) industry is one of the earliest adopters of 3D printing, with the first use of the technology going back to 1989. Now, three …

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  • Three Dimensional Versus Standard Miniplate In Fixation Of ...

    Experimental: three dimensional titanium miniplate 3D curved strut miniplate* (Universal Mandible System, Stryker-Lei binger, Freiburg, Germany) , installed and stabilized with monocortical screws. The 3D plate will be place in such a way that a horizontal bar is perpendicular and a vertical bar is parallel to the fracture line.

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  • Dental Pulp Stem Cells: Advances to Applications

    Department of Pharmacology, The Nippon Dental University School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-Ku, Tokyo 102-8159, Japan. Tel +81 3-3261-8311. Fax +81 3-3264-8399. Email [email protected] Abstract: Dental pulp stem cells (DPSCs) have a high capacity for differentiation and the ability to regenerate a dentin/pulp-like ...

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  • Initial effect of multiloop edgewise archwire on the ...

    Abstract. The purpose of this study was to compare the effect of a multiloop edgewise archwire (MEAW) with a plain ideal archwire (IA) on distal en masse movement of the mandibular dentition. A three-dimensional finite element model (3D fem) of the mandibular dentition, without third permanent molars, was constructed to include the periodontal membrane (pdm), alveolar bone, standard edgewise ...

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  • The Maximum Extractable Wind Power On Earth is 58 Times ...

    In the model, wind turbines extracted kinetic energy to produce electric power, and wind speeds were adjusted accordingly each time increment in a manner similar to with Equations 6.34 to 6.37. Because the model was three dimensional, it accounted for the increased vertical transport, due to turbulence, of faster

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  • Valve 3D Models - 3D CAD Browser

    Download Valve 3D Models for 3ds Max, Maya, Cinema 4D, Lightwave, Softimage, Blender and other 3D modeling and animation software.

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  • Mean-line modeling and CFD analysis of a miniature radial ...

    Figure 13 shows the three-dimensional geometry of the final radial turbine design using the proposed methodology of mean-line modeling and CFD simulation. It can generate a power output of 4.662 kW with specific diameter of 4.83 (rotor inlet diameter of 0.0787 m) and specific speed of 0.433 (rotational speed of 55 000 rpm).

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  • Flow meters

    A flow meter (or flow sensor) is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of …

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  • Optics in three-dimensional printing - Velo3D, Inc.

    Three-dimensional printing and three-dimensional printers: 2019-05-14: Buller et al. 10272525: Three-dimensional printing systems and methods of their use: 2019-04-30: Buller et al. 20190118286: THREE-DIMENSIONAL LAMINATING AND SHAPING APPARATUS AND LAMINATING AND SHAPING METHOD: 2019-04-25: Sugatani et al. 10252335: Accurate three-dimensional ...

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  • Three-dimensional reconstruction of brain structures of ...

    Degus (Octodon degus) are rodents that are becoming more widely used in the neuroscience field. Degus display several more complex behaviors than rats and mice, including complicated social behaviors, vocal communications, and tool usage with superb manual dexterity. However, relatively little information is known about the anatomy of degu brains. Therefore, for these complex behaviors to be ...

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  • Chapter 46 Test Review Flashcards

    Start studying Chapter 46 Test Review. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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  • Accuracy of a three-dimensional dentition model digitized ...

    The purpose of this study was to develop an efficient and accurate method for 3D imaging and reproduction of the maxillary and mandibular dental morphology from interocclusal records using an optical scanner. ... Three-dimensional dental cast analyzing system using laser scanning. ... Oxford University Press is a department of the University of ...

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  • Assessment of Research Needs for Wind Turbine Rotor ...

    Goldsworthy, B. 1990. VA Wind Turbine Blades Made by the Pultrusion Process . NRC Workshop on Assessment of Research Needs for Wind Turbine …

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  • (PDF) DEVELOPMENT OF ALL SPEED THREE DIMENSIONAL ...

    An unstructured grid parallel three dimensional RANS all speed solver has been developed inhouse to solve flow problems of low to high Mach number by the present authors [30]. This newly developed ...

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  • Relevance of the Implementation of Teeth in Three ...

    Purpose Recently, efforts have been made to investigate the vocal tract using magnetic resonance imaging (MRI). Due to technical limitations, teeth were omitted in many previous studies on vocal tract acoustics. However, the knowledge of how teeth influence vocal tract acoustics might be important in order to estimate the necessity of implementing teeth in vocal tract models. The aim of this ...

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  • Two- versus three-dimensional imaging in subjects with ...

    Abstract. The aim of this study was to evaluate whether there is any difference in the diagnostic information provided by conventional two-dimensional (2D) images or by three-dimensional (3D) cone beam computed tomography (CBCT) in subjects with unerupted maxillary canines.

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  • Amazon Best Sellers: Best Oral Dispensing Syringes

    Discover the best Oral Dispensing Syringes in Best Sellers. Find the top 100 most popular items in Amazon Industrial & Scientific Best Sellers.

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  • DDG-51 ARLEIGH BURKE-class - Navy Ships

    Each of the three Gas Turbine Generator Sets (GTGS) is rated at 2500 KW and supplies 450 VAC, three-phase, 60 HZ power. #1 GTGS is located in Auxiliary Machinery Room #1, #2 GTGS is located in Main Engine Room #2, and #3 GTGS is located in #3 Generator Room. The GTGS are separated from each other by three watertight bulkheads for survivability.

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  • Prostate Cancer: Localization with Three-dimensional ...

    PURPOSE: To assess the efficacy of combined magnetic resonance (MR) imaging and three-dimensional (3D) proton MR spectroscopic imaging in the detection and localization of prostate cancer. MATERIALS AND METHODS: MR imaging and 3D MR spectroscopic imaging examinations were performed in 53 patients with biopsy-proved prostate cancer and subsequent radical prostatectomy with step-section ...

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  • Naval History Blog » Blog Archive » The Strike Cruiser

    The planned strike cruiser was an outgrowth of the DLGN concept, developed in 1973-1974 as an enlarged carrier …

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  • Vertical maneuvering equipment

    The vertical maneuvering equipment(立体機動装置Rittai kidō sōchi?) is a set of equipment developed by humans allowing …

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