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

    2012-7-1 · Air-turbine handpieces have been used for most dental cutting procedures for more than 50 years since the invention of the Borden Air rotor in 1957. 1 Although some improvements such as push-button bur release, swivel coupling, and fiber-optic illumination have made it more convenient for use, the main component, a turbine rotor supported by two miniature ball bearings, remains unchanged. 1 ...

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  • Microstructural characterization and electrochemical ...

    2021-3-1 · Enhancing the electrochemical behavior of pure copper by cyclic potentiodynamic passivation: a comparison between coarse- and nano-grained pure copper Metall Mater Trans B , 47 ( 2016 ) , pp. 2761 - 2770 , 10.1007/s11663-016-0755-1

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  • Polymer composites for tribological applications ...

    2018-10-1 · Many different polymers and polymer composites are used for engineering applications in which friction and wear are critical issues. This article briefs (a) the importance of polymer tribology in general, (b) the special design principles of polymer composites for low friction and wear under sliding against smooth metallic counterparts, and (c) synergistic effects of nano-particles and ...

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  • Through the doors: Arcam readies for EBM 3D printer ramp ...

    2020-2-28 · Ölme and Elfström say the pure copper powder is still ‘a research material’, which proves it works on EBM technology, but now must go through a ‘development’ phase, where Arcam shares it with a select few customers, before becoming a ‘production’ material where it will be made available as an 'off the shelf' product.

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  • Potassium - Health Professional Fact Sheet

    2021-8-24 · This is a fact sheet intended for health professionals. For a reader-friendly overview of Potassium, see our consumer fact sheet on Potassium.. Introduction. Potassium, the most abundant intracellular cation, is an essential nutrient that is naturally present in many foods and available as a dietary supplement.

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  • Solution 12 - Startsida

    2004-8-6 · Uo = 1621 Wm-2 °C-1 Ao = 3482.5 x 10 3 = 24.80 m2 1621 x 86.6 So the exchanger should be capable of fulfilling the duty required, providing the water in put through the shell. Note; the viscosity correction factor has been neglected when estimating the heat transfer

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  • Nickel titanium in orthodontics /certified fixed ...

    2014-2-27 · The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats. Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics, Dental …

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  • Cementation - an overview

    Cemented copper is not a pure metal. Every other metal present in this solution whose standard electrode potential is higher than that or iron, for example, Co 2+, Ni 2+, etc., may also be cemented. On the other hand, if the amount of an element in a solution is small, the difference between the standard potential of the half cell of the ...

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  • Diagnosis and Treatment of Pain in Small Fiber Neuropathy

    2 天前 · Introduction. Peripheral neuropathy is an expanding public health problem, seen in nearly 40 million individuals in the United States [].Many of these individuals will have specific damage to small myelinated and unmyelinated nerve fibers, either in isolation or in combination with injury to larger myelinated nerve fibers.

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    2021-4-21 · The all-new SVF-7000 Perimeter by MAIN MEDITECH, in collaboration with OPTO HELLAS, is now available through our EMEAA distribution network. With a smart LED configuration, an automatic mechanical chinrest that auto aligns the patient during the measurement procedure and by being compliant to the Goldman III standards; the SVF-7000 is here to set new standards for perimetry …

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    2019-9-10 · Trace mineral supplements come with side effects that outweigh positive benefits people hope to get from them. Unless a person is deficient and needs an extra dose of a certain nutrient, it's best to focus on getting what you need from a healthy, …

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    Figure 3-10.—Girder span on pipe columns. Figure 3-11.—Built-up column section. such that the joints or splices are 1 1/2 to 2 feet above the second and succeeding story levels.

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  • Diagnosis and Treatment of Pain in Small Fiber Neuropathy

    2 天前 · Introduction. Peripheral neuropathy is an expanding public health problem, seen in nearly 40 million individuals in the United States [].Many of these individuals will have specific damage to small myelinated and unmyelinated nerve fibers, either in isolation or in combination with injury to larger myelinated nerve fibers.

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  • Side Effects of Trace Mineral Supplements

    2019-9-10 · Trace mineral supplements come with side effects that outweigh positive benefits people hope to get from them. Unless a person is deficient and needs an extra dose of a certain nutrient, it's best to focus on getting what you need from a healthy, …

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  • STRUCTURAL STEEL TERMS LAYOUT AND FABRICATION

    Figure 3-10.—Girder span on pipe columns. Figure 3-11.—Built-up column section. such that the joints or splices are 1 1/2 to 2 feet above the second and succeeding story levels.

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  • Diagnosis and Treatment of Pain in Small Fiber Neuropathy

    2 天前 · Introduction. Peripheral neuropathy is an expanding public health problem, seen in nearly 40 million individuals in the United States [].Many of these individuals will have specific damage to small myelinated and unmyelinated nerve fibers, either in isolation or in combination with injury to larger myelinated nerve fibers.

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  • Factorio Mods

    Use this with Angel's Smelting to re-enable the smelting of basic vanilla/bob ores (iron, copper, tin and lead) in the furnace. 21 hours ago 1.1 13 General Download Found 3279 mods 1 2 163 164 Terms of ...

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  • COVID-19 and Dentistry in 72 Questions: An Overview of

    2021-2-16 · 2. Worldwide COVID-19 Epidemiology. Q2—What was the starting point of the pandemic? At the end of 2019, several cases of “pneumonia of unknown cause” were identified in Wuhan, and a new coronavirus, SARS-CoV-2, was rapidly identified [9,10].An outbreak of zoonotic origin was suspected, as bats are the natural reservoir of many coronaviruses.

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  • Shedding UVC light on Covid-19 to protect dentistry staff ...

    2021-7-2 · As the scourge of the Covid-19 pandemic wreaks havoc on societies across the world, researchers around the globe are working tirelessly to find an effective treatment [1–9] and vaccine to combat this debilitating disease [10–17].Most importantly, the uncertain trajectory of disease progression, particularly, in terms of controlling transmission of SARS-CoV-2 is an important concern.

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  • IOP Conference Series: Materials Science and Engineering ...

    The aim of this paper is to develop a three-dimensional coupled thermo-mechanical finite element (FE) model of FSW process for pure copper plates using the Coupled Eulerian-Lagrangian (CEL) formulation given in the FE code ABAQUS V6.13. The CEL formulation is one of the few formulations that are capable of handling with such large deformations.

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    Biomimetics (which we here mean to be synonymous with ‘biomimesis’, ‘biomimicry’, ‘bionics’, ‘biognosis’, ‘biologically inspired design’ and similar words and phrases implying copying or adaptation or derivation from biology) is thus a relatively young study embracing the practical use of mechanisms and functions of biological science in engineering, design, chemistry ...

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  • Solution 12 - Startsida

    2004-8-6 · Uo = 1621 Wm-2 °C-1 Ao = 3482.5 x 10 3 = 24.80 m2 1621 x 86.6 So the exchanger should be capable of fulfilling the duty required, providing the water in put through the shell. Note; the viscosity correction factor has been neglected when estimating the heat transfer

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  • Milk of Magnesia Uses, Side Effects & Warnings - Drugs.com

    2019-11-21 · Milk of Magnesia side effects. Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.. Stop using Milk of Magnesia and call your doctor at once if you have: severe nausea, vomiting, or diarrhea;. no bowel movement …

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  • IOP Conference Series: Materials Science and Engineering ...

    However, there are few studies on expander with both active magnetic bearings and eddy current brakes. In this study, the speed of the turbine is up to 100000 rpm. Its cooling power is about 4kW. The inlet pressure is 1MPa, and the outlet pressure is 0.7MPa. Under this condition, the turbine is designed, and the simulation is done.

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  • Potassium - Health Professional Fact Sheet

    2021-8-24 · This is a fact sheet intended for health professionals. For a reader-friendly overview of Potassium, see our consumer fact sheet on Potassium.. Introduction. Potassium, the most abundant intracellular cation, is an essential nutrient that is naturally present in many foods and available as a dietary supplement.

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    Ataxia is a common neurological syndrome resulting from cerebellar, vestibular or sensory disorders. The recognition and characterisation of sensory ataxia remains a challenge. Cerebellar ataxia is the more common and easier to identify; sensory ataxia is often mistaken for cerebellar ataxia, leading to diagnostic errors and delays. A coherent aetiological work-up is only possible if ...

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    Bioprocessing Equipment ASME BPE-2016

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  • The use of neural network to estimate mass transfer ...

    2014-9-7 · In this study, the ability of the artificial neural network (ANN) to estimate the rate of mass transfer coefficient was compared against the mass transfer correlation obtained by dimensional analysis in terms of Sherwood, Schmidt and Reynolds numbers. The results showed that the ANN is better than the conventional mass transfer correlation in most cases and the best results are obtained at 3 ...

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  • The use of neural network to estimate mass transfer ...

    2014-9-7 · In this study, the ability of the artificial neural network (ANN) to estimate the rate of mass transfer coefficient was compared against the mass transfer correlation obtained by dimensional analysis in terms of Sherwood, Schmidt and Reynolds numbers. The results showed that the ANN is better than the conventional mass transfer correlation in most cases and the best results are obtained at 3 ...

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