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  • Three-dimensional Navier-Stokes simulations of turbine ...

    2012-5-23 · No Access. Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. Part I - Methodology. Man Mohan Rai. Man Mohan Rai. NASA Ames Research Center, Moffett Field, California. Search for more papers by this author. Published Online:23 May 2012 https://doi.org/10.2514/3.23154. PDF.

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  • Comparison of cutting efficiencies between electric and ...

    2018-3-19 · The electric handpiece is more efficient at cutting various materials used in dentistry, especially ma-chinable glass ceramic, silver amalgam, and high noble alloy, than the air-turbine handpiece. (J Prosthet Dent 2010;103:101-107) Comparison of cutting efficiencies between electric and air-turbine dental handpieces

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  • Miniature Gas-Turbine Power Generator - NASA

    2003-1-1 · Miniature Gas-Turbine Power Generator A proposed microelectromechanical system (MEMS) containing a closed- Brayton-cycle turbine would serve as a prototype of electric-power generators for special applications in which high energy densities are required and in which, heretofore, batteries have been used. The system would have a volume of about 6 cm3 and …

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  • Novel Ceramic Turbine Rotor Concept. | National

    An air-cooled composite material containment hoop is utilized at the outer diameter of ceramic air-cooled fins which support ceramic turbine blades in compression against a radially compliant wheel. The design study of this Compression Structured Ceramic Turbine Rotor included detailed material, heat transfer, and 3-D stress analyses.

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  • Dimensional Accuracy of Dental Models for Three-Unit ...

    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 manufacturing methods and systems

    The gas turbine engine 10 may be any one of a number of different gas turbine engines offered by General Electric Company of Schenectady, N.Y., including, but not limited to, those such as a 7 or a 9 series heavy duty gas turbine engine and the like. The gas turbine engine 10 may have different configurations and may use other types of ...

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  • Design of a unique direct driven PM generator adapted for ...

    2012-8-1 · For a thick telecom tower like this one the obvious choice of wind turbine is a three-dimensional turbine which is not dependent of the wind direction. Therefore, the choice falls on a vertical axis wind turbine , , . There are apparent reasons for the suitability of this configuration over a traditional horizontal axis wind turbine, mainly to avoid yawing and the unbalanced loading of the tower for a two-dimensional turbine.

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  • Materials | Free Full-Text | Three-Dimensional Zirconia ...

    The design of zirconia-based scaffolds using conventional techniques for bone-regeneration applications has been studied extensively. Similar to dental applications, the use of three-dimensional (3D) zirconia-based ceramics for bone tissue engineering (BTE) has recently attracted considerable attention because of their high mechanical strength and biocompatibility.

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  • Three-dimensional bioactive hydrogel-based scaffolds

    2021-5-1 · Three-dimensional bioactive hydrogel-based scaffolds for bone regeneration in implant dentistry

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  • A Machining Science Approach to Dental Cutting of Glass ...

    The dental cutting was conducted on a two-dimensional computer-assisted apparatus to simulate clinical cutting operations using a high-speed electric handpiece (Ti95L, NSK, Japan), which can be run at the maximum rotational speed of 200 krpm. Figure 1(a) shows the image of cutting a ceramic using a dental handpiece and a bur.

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  • Three-dimensional Navier-Stokes simulations of turbine ...

    2012-5-23 · Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. Part I - Methodology. Man Mohan Rai; Man Mohan Rai. NASA Ames Research Center, Moffett Field, California ... Quasi-three-dimensional calculation for the effect of axial gap variation on the performance of an advanced compressor stage.

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  • Steam Turbines for Power Generation | GE Steam Power

    2021-7-9 · Steam turbine services for coal and nuclear power plants. Our vast portfolio of steam turbine service solutions, advanced reverse engineering capabilities and steam turbine spare parts packages covers GE and other OEM fleets—from turbine operations and maintenance to performance and lifetime improvement.

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  • Arabelle Nuclear Steam Turbine | GE Steam Power

    2021-7-9 · GE’s Arabelle turbine is the most powerful nuclear steam turbine in operation. Suiting all reactors type, from 700MW up to 1,900MW, the Arabelle is highly efficient, reliable, and cost effective. 99.96%. reliability over 400,000 operating hours. 1,900 MW.

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  • [An approach to the dental CAD/CAM using the electric ...

    [An approach to the dental CAD/CAM using the electric discharge machining (2). Development of the three dimensional multi functional NC machine and the machining properties by the RAM type EDM in diionized water]

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  • Dynamic analysis of three-dimensional drivetrain system of ...

    2021-7-10 · S400 2020 type dental chair package is designed with simple and elegant style. Its streamlined shape highlights the three-dimensional beauty. Classic and modern color matching meets your individual needs.

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  • Dental Chair Package, ZC-S400 | JOINCHAMP

    2015-2-6 · This methodology reduces the design cycle time by creating a three-dimensional model of the blade, through concurrent design of multiple two-dimensional blade sections. An efficient direct design procedure has been developed by coupling direct optimization techniques with two-dimensional aerodynamic analysis codes.

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  • Turbine Airfoil Design Optimization | Turbo Expo: Power ...

    2014-7-1 · Three-dimensional and 2-dimensional surface profile of group CMT (turbine, coarse and medium grit). Download : Download high-res image (396KB) Download : Download full-size image; Fig. 5. Three-dimensional and 2-dimensional surface profile of group CFE (electric handpiece, coarse and fine grit). Download : Download high-res image (397KB)

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  • Influence of oscillating and rotary cutting instruments ...

    2015-3-31 · The data were analyzed using a version of the STAN5 two-dimensional boundary layer code. The transition starting and ending points were determined by adjusting parameters in STAN5 until the calculations matched the data. The results are presented as tables of the deduced transition location and length as functions of the test parameters.

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  • A Review and Analysis of Boundary Layer Transition Data ...

    2019-12-24 · A dental x-ray is a picture of your teeth and gums. An x-ray shows what can't be seen on the surface of the teeth and gums. Braces are used by dentists to straighten teeth over a period of years. 13 流利说_懂你英语_Level4_Unit1 Though braces are usually for children, they can also be used for adults with crooked teeth.

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  • Steam Turbines for Power Generation | GE Steam Power

    2021-7-9 · Steam turbine services for coal and nuclear power plants. Our vast portfolio of steam turbine service solutions, advanced reverse engineering capabilities and steam turbine spare parts packages covers GE and other OEM fleets—from turbine operations and maintenance to performance and lifetime improvement.

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  • China Turbine, Turbine Manufacturers, Suppliers, Price ...

    China Turbine manufacturers - Select 2021 high quality Turbine products in best price from certified Chinese Water Turbine, Wind Turbine Generator suppliers, wholesalers and factory on Made-in …

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  • Advancements in metal 3D printing - Roland Berger

    2021-7-9 · and turbine blades. For the last of these items, PBF-L costs as much as 70 times more than conventional man-ufacturing techniques, for example. B The productivity of PBF-L is closely linked to the num-ber of lasers that are active at the same time. One produc-er of PBF-L equipment is currently preparing to launch a

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  • Highly-reliable Design Technology of Steam Turbine for ...

    2015-3-31 · Unit 2 of Hokuriku Electric Power Company’s Shika Nuclear Power Station. APPLICATION OF THE LATEST FLUID ANALYSIS TECHNIQUES AND DEVELOPMENT OF NEW BLADE Use of the Latest Fluid Analysis Techniques to Identify Cause of Damage A multi-stage quasi-three-dimensional unsteady flow analysis of a 60-Hz/1,800-rpm steam turbine

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  • Hydro services - Wartsila.com

    Hydro Services. Wärtsilä with its subsidiary American Hydro Corporation is a leading supplier and installer of high-performance runners and other large equipment for the hydroelectric industry, specializing in design, engineering, precision CNC manufacture, upgrades and servicing of high performance hydro turbines and large pumps.

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  • Turbine Expanders Market:to Reflect Impressive

    Turbine expanders are the mechanical devices which are used to convert kinetic energy into mechanical energy by creating high pressure expanded gas when passed through the turbines. Converted mechanical energy with the help of high pressure gas, enables the turbine to rotate the shaft, and store the energy which is then required to drive electric generators and compressors …

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  • Gas Turbine Technology option - MSc in Thermal Power

    The axial turbine stage: Aerodynamic concepts and parameters, velocity triangles, reaction, stage loading, flow coefficients. The ideal and real characteristic. Design for maximum power: effect of choking and change of inlet temperature and pressure. Stage efficiency, overtip leakage, profile losses, correlations. Three-dimensional design aspects.

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  • Back to Basics Selecting a Centrifugal Compressor

    2013-5-23 · Figure 8 shows a cross-section of a three-stage between-bearing compressor. A driver (e.g., an electric motor, steam turbine, or gas turbine) rotates the shaft and all of the impellers at the same speed. Flow enters the compressor via the inlet and flows into the inlet guide, which distributes the flow circumferentially around the machine to

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  • Volumes | Turbo Expo: Power for Land, Sea, and Air ...

    Numerical Investigation of Three-Dimensional Separation in an Axial Flow Compressor: The Influence of Free-Stream Turbulence Intensity and Endwall Boundary Layer State Ashley D. Scillitoe , Paul G. Tucker , Paolo Adami

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  • David Mason Inventions, Patents and Patent Applications ...

    2018-3-9 · Abstract: A conductive ink composition is disclosed comprising conductive solids and a medium, wherein the conductive solids comprise glass flakes coated with an electrically conductive coating. Optionally, the electrically conductive coating may comprise a conductor selected from the group comprising silver, nickel, gold, metal nanoparticles, indium tin oxide, fluorine doped tin oxide.

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  • Highly-reliable Design Technology of Steam Turbine for ...

    2015-3-31 · Unit 2 of Hokuriku Electric Power Company’s Shika Nuclear Power Station. APPLICATION OF THE LATEST FLUID ANALYSIS TECHNIQUES AND DEVELOPMENT OF NEW BLADE Use of the Latest Fluid Analysis Techniques to Identify Cause of Damage A multi-stage quasi-three-dimensional unsteady flow analysis of a 60-Hz/1,800-rpm steam turbine

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  • Gas Turbine Technology option - MSc in Thermal Power

    The axial turbine stage: Aerodynamic concepts and parameters, velocity triangles, reaction, stage loading, flow coefficients. The ideal and real characteristic. Design for maximum power: effect of choking and change of inlet temperature and pressure. Stage efficiency, overtip leakage, profile losses, correlations. Three-dimensional design aspects.

    Get Price
  • Woodpecker Dental Products at Best Price Online ...

    Buy Woodpecker Dental Products. Woodpecker, the biggest ultrasonic scaler manufacturer, owns a maximal production and consumption of ultrasonic scaler in the world.The export volume of LED curing light is also in the leading position. In the past 26 years, Woodpecker has been focused on researching, developing, selling dental equipment.

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  • Design and Analysis of a Kaplan Turbine Runner Wheel

    2017-6-12 · Michigan’s Grand Rapids Electric Light & Power Company generated the hydro-electricity for the first time by a dynamo connected to a water turbine to light up 16 lamps in their theatres and stores. The world’s first hydroelectric power plant was built on the Fox River in Appleton, Wisconsin in 1882 with an output power of 12.5 Kw.

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  • Extraction with an electric motor-driven handpiece may ...

    2020-11-24 · Tooth extraction-related SE is often caused by using air-driven/air-turbine high speed handpiece. Although some suggestions were raised for preventing extraction complications,4 using electric-driven, sonic/ultrasonic or non-vented high-speed devices for surgical extraction is the best method preventing the occurrence of SE.5 In this case, even though electric motor driven …

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  • Steam Turbine Market Global Industry Analysis, Size and ...

    Steam Turbine Market: Introduction. Steam turbine is a rotary heat engine which converts thermal energy contained in the steam to electrical and mechanical energy. A steam turbine consist turbine, boiler (steam generator), condenser, feed pump and variety of auxiliary devices. About 90% of electricity generated in world by steam turbine.

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  • Finite volume method for radiation heat transfer | Journal ...

    2012-5-23 · Three dimensional constricted electric current near anode and cathode of Faraday MHD generator. Energy Conversion and Management, Vol. 44, No. 13 ... Radiation in a three-dimensional gas turbine combustor. Seung Baek, Man Kim, ...

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  • Three-Dimensional Biomimetic Mineralization of Dense ...

    2019-12-12 · An electric-current-assisted method was used to mineralize dense hydrogels and create hydroxyapatite/hydrogel composites with unique hierarchical structures. The microstructure of the final material can be controlled by the mineralization technique and the chemistry of the organic matrix. A hydroxyapatite/hydrogel composite was obtained with a large inorganic content …

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  • Hydrogen Fueled Gas Turbines | Mechanical Engineering ...

    2019-3-1 · As author Peter Hoffman points out in The Forever Fuel: The Story of Hydrogen [ 1 ], hydrogen, a normally invisible, tasteless colorless gas, is the most abundant element in the universe. As a fuel it is very energetic and non-polluting, reacting with oxygen to yield H 2 O. For engines, hydrogen is the best of everything [ 2 ].

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  • Environmental Dimensions of Additive Manufacturing

    RESEARCH AND ANALYSIS Environmental Dimensions of Additive Manufacturing Mapping Application Domains and Their Environmental Implications Karel Kellens,1 Martin Baumers,2 Timothy G. Gutowski,3 William Flanagan,4 Reid Lifset,5 and Joost R. Duflou1 1Life Cycle Engineering Research Group, Department of Mechanical Engineering of the KU Leuven, Leuven, Belgium

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  • [An approach to the dental CAD/CAM using the electric ...

    1991-3-1 · [An approach to the dental CAD/CAM using the electric discharge machining (2). Development of the three dimensional multi functional NC machine and the machining properties by the RAM type EDM in diionized water].

    Get Price
  • I have it—You want it! Bien-Air turbines and electric ...

    Buy Woodpecker Dental Products. Woodpecker, the biggest ultrasonic scaler manufacturer, owns a maximal production and consumption of ultrasonic scaler in the world.The export volume of LED curing light is also in the leading position. In the past 26 years, Woodpecker has been focused on researching, developing, selling dental equipment.

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  • Woodpecker Dental Products at Best Price Online ...

    2008-9-22 · Three years later, George F. Green introduced electricity to the device. Green’s electromagnetic-motor-powered drill was effective, but it was heavy and too expensive for most practices. Forty-five years after the introduction of the plug-in drill, the modern air-turbine-engine dental drill was developed in 1953, increasing rpms to 50,000.

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  • Drilling for a Century | Proto Magazine

    Configurations. 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.

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  • dental chair dimensions | Treedental

    Guangdong JINME Medical Technology Co., Ltd., Experts in Manufacturing and Exporting High-speed Handpiece,Low-speed Handpiece and 815 more Products. A …

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  • Guangdong JINME Medical Technology Co., Ltd. - High

    2021-7-5 · Transportation logistics Through years of technology accumulation and market cultivation in the early stage, Aerospace Intelligent Manufacturing has formed many typical cases and core technological achievements in the high-end equipment manufacturing industry

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  • The Electric Turbine - Revolution-Green

    2019-4-13 · the turbine noise, thereby increasing the masking probability [5]. The Dutch noise regulation [6] adjust the allowed turbine limits depending on the wind speed, thereby it implicitly accounts for the masking by background sound. This result in a simple but coarse procedure as these standardized ambient noise levels should be set low to avoid ...

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