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  • CFD Analysis of Thin Film Lubricated Journal Bearing ...

    2013-1-1 · The results showed that for the cases of thin film lubricated journal bearing, the turbulent models did not give any significant to the simulation results. However for the case of complex geometry, another simulation needs to be conduct to determine an effect of the different turbulent models in the simulation of the lubricant in bearing system.

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  • Numerical Unsteady Analysis of Thin Film Lubricated ...

    2018-7-5 · lubrication property of the bearing clearly. A thin film lubricated journal bearing is to develop positive pressure by virtue of relative motion of two surfaces separated by a fluid film. Thin film bearings are those in which although lubricant is present, the working surfaces partially contact …

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  • Journal-Bearing Friction in the Region of Thin-Film ...

    Journal-Bearing Friction in the Region of Thin-Film Lubrication1 Semi-Annual Meeting Paper By S. A. McKee' and T. R. McKee1 AUTOMOTIVE engineers, who have to deal with high-speed high-load journal bear-** ings and are confronted with fear of the consequences of 'ragged-edge' thin-film lubrication, will find much of interest and value in this ...

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  • Research Article Performance Analysis of Short Journal ...

    Research Article Performance Analysis of Short Journal Bearing under Thin Film Lubrication SandeepSoniandD.P.Vakharia DepartmentofMechanicalEngineering,SVNIT,Surat, India

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  • Performance Analysis of Short Journal Bearing under

    The steady state performance analysis of short circular journal bearing is conducted using the viscosity correction model under thin film lubrication conditions. The thickness of adsorbed molecular layers is the most critical factor in studying thin film lubrication, and is the most essential parameter that distinguishes thin film from thick film lubrication analysis.

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  • Journal-Bearing Friction in the Region of Thin-Film ...

    1932-1-1 · Journal-Bearing Friction in the Region of Thin-Film Lubrication 1 320009 AUTOMOTIVE engineers, who have to deal with high-speed high-load journal bearings and are confronted with fear of the consequences of “ragged-edge” thin-film lubrication, will find much of interest and value in this report.

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  • Journal Bearings - an overview | ScienceDirect Topics

    The piston pin-bore bearing also acts as a form of journal bearing, so do the big-end bearings, covered in Chapters 19 and 20. Journal bearings usually operate in a hydrodynamic regime of lubrication as the generated pressures are low compared with those experienced by ball and rolling element bearings, gears and cam–follower pairs.

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  • Understanding Journal Bearings - EDGE

    Figure 1 - Typical Plain Journal Bearing Figure 2 - Computer Model of Plain Journal Bearing At zero speed, the shaft rests on the bearing at bottom dead center. As soon as shaft rotation begins the shaft “lifts off” on a layer of oil. In fluid film bearings, lubrication is required between a pair of …

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  • Hydrodynamic fluid film bearings and their effect on the ...

    2021-5-21 · 4 Importance of fluid inertia in thin film flows Importance of fluid inertia effects on several fluid film bearing applications. (c/RJ)=0.001, R J =38.1 mm (1.5 inch) R134 refrigerant 13.30 0.163 930 9,296 Liquid nitrogen 13.93 0.179 848 8,477 Liquid oxygen 10.47 0.191 794 7,942 Liquid hydrogen 1.075 0.216 705 7,052 Water 64 1.00 159 1,588

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  • Acoustic journal bearing—A search for adequate ...

    2015-12-1 · However, not many attempts have been made to design a journal bearing operating on a squeeze film acoustic levitation because in this type of a bearing there is a need to generate a high frequency vibration of the bearing surface. This is further complicated because the surface subjected to high frequency vibration in a journal bearing is circular.

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  • [PDF] PVD Coatings for Medical Device Applications ...

    Since it was introduced to the medical device industry in the late 1980s, physical vapor deposition (PVD) has become widely used to deposit wear-resistant thin-film coatings on a variety of medical devices, including orthopedic implants, pacemakers, surgical instruments, orthodontic appliances and dental instruments. The value of PVD technology rests in its ability to modify the surface ...

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  • Lateral Thin-Film Piezoelectric Actuators for Bio

    2010-7-29 · Thin-film lead-zirconate-titanate (PZT) actuators are a potential enabling technology for autonomous micro-robots with locomotion abilities rivaling biological systems. Actuators capable of supplying the large forces and extended displacements needed to drive terrestrial micro-robotic locomotion have been designed and tested.

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  • Massive failure of TiNbN coating in surface

    2015-5-14 · This article presents examination of a failed total hip replacement with surface engineered metal‐on‐metal (MoM) articulation. The implant was coated with a thin TiNbN film (Physical Vapor Deposition), and at retrieval 53 months after implantation the coating was abraded on weight‐bearing part of the head and acetabular component.

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  • Thin Film Coating - an overview | ScienceDirect Topics

    S. Sundarrajan, S. Ramakrishna, in Smart Textiles for Protection, 2013 4.5.4 Self-cleaning and stain-repellent properties. Thin film coatings of TiO 2 on cotton to give self-cleaning (lotus leaf effect) textiles have been explored by Daoud and Xin (2004).TiO 2 in pure anatase form was coated on textiles at 97 °C by boiling in water for 3 h. Titania can be used as a self-cleaning antibacterial ...

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  • Benzodithiophene–Dithienylbenzothiadiazole

    2018-9-13 · PfBB-n-bearing linear alkyl side chains exhibited strong and controllable aggregation in both solution and solid states, which gives rise to a significant bathochromic shift of the absorption cut-off down to ∼780 nm in thin film. In addition, the strong and wide absorption (350–800 nm) of PfBB-n polymers can compensate for the relatively ...

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  • Thin Liquid Film Profile Near the Interline Region in a ...

    2009-6-8 · The asymptotic analytical solutions for thin liquid film profile in a capillary tube are obtained by the perturbation method. The variation of the film thickness, the contact angle of the vapor-liquid interface and its axial curvature depend on the effects of the disjoinng pressure and the capillary pressure.

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  • Larry KRAMER, JR | Physical Therapy and Occupational ...

    The purpose of this study was to evaluate in vivo the biocompatibility of BioMedFlex (BMF), a new resilient, hard-carbon, thin-film coating, as a blood journal bearing material in Cleveland Heart ...

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  • Film pressure | Article about film pressure by The Free ...

    Numerical Investigation of Turbulence Models for a Superlaminar Journal Bearing. where P is the oil film pressure, h is the modified thickness of oil film, [rho] ... prevents the shaft or bushings from moving side-to-side, and preloads opposing thin film pressure, maintaining the perfect gap and tolerances. ... or advice of a legal, medical, or ...

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  • Differentiated Growth of Human Renal Tubule Cells

    2020-1-31 · The kidney is unique in that it is the first organ for which long-term ex vivo substitutive therapy has been available and lifesaving. The prevalence of end-stage renal disease in the United States has been rising at approximately 8% per year. 1,2 The disease is best treated with a renal transplant; annual mortality for recipients of a first deceased-donor renal transplant is 40% less than …

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  • Hydrostatic and Hydrodynamic Bearings Selection

    2020-8-17 · A hydrodynamic bearing is typically a low-clearance assembly that relies on a film of oil (and occasionally air) that develops space while the spindle is rotating. The bearings transmit (float) the load on self-renewing film of lubricant. The most basic hydrodynamic bearing is the journal bearing.

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  • Real-time Colorimetric Quantitative Molecular

    2020-6-2 · The 3D printed processor housed a thin-film heater, a 3.3-V rechargeable lithium-ion battery, an electric circuit board, a plastic optical diffuser, a chip holder and a smartphone adaptor.

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  • Gantry angle determination during arc IMRT: evaluation

    Journal of Applied clinical Medical Physics, Vol. 13, no. 6, 2012 The IBA GAS was attached to the gantry head (Fig. 1) and leveled by two locking screws. It was adjusted to the linac gantry angle indicator at 0° and 90° angles, and was finally aligned

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  • Differentiated Growth of Human Renal Tubule Cells

    2020-1-31 · The kidney is unique in that it is the first organ for which long-term ex vivo substitutive therapy has been available and lifesaving. The prevalence of end-stage renal disease in the United States has been rising at approximately 8% per year. 1,2 The disease is best treated with a renal transplant; annual mortality for recipients of a first deceased-donor renal transplant is 40% less than …

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  • Advanced Functional Materials: Early View

    Ultrathin and ultra-lightweight organic solar cells (total thickness of less than 3 mm) with a stabilized power conversion efficiency of 15.5% and unprecedented power-per-weight of 32.07 W g −1 at a weight of 4.83 g m −2 are realized, which may be applied to almost any surface of wearable electronic devices, and can withstand the associated mechanical deformation.

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  • Chinese J. Polym. Sci - cjps.org

    2021-5-20 · The great potential of liquid-crystalline block copolymers (LCBCs) containing photoresponsive mesogens toward novel applications in photonics and nanotechnology has been attracting increasing attention, due to the combination of the inherent property of microphase separation of block copolymers and the hierarchically-assembled structures of liquid-crystalline polymers (LCPs).

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  • History of the Medical Use of Silver | Surgical Infections

    Dyes and Pigments期刊最新论文,,顶级期刊最新论文图文内容,出版社网站每日同步更新,点击标题直达论文原文,自定义关注的期刊,覆盖PubMed的论文库,快速方便精准的找到您想要的论文

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  • Publishing Open Access research journals & papers |

    2019-9-9 · Background: Silver has been used extensively throughout recorded history for a variety of medical purposes. Methods: A review of the literature in English was undertaken, primarily using PUBMED, to identify the medical uses of silver before the clinical introduction of antibiotics in the 1940s. Results: Silver has been used for at least six millennia to prevent microbial infections.

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  • How to conduct a failure modes and effects analysis (FMEA)

    With the researcher at the heart of the publishing experience, we have created a diverse portfolio of peer-reviewed, open access journals across a wide range of scientific and medical disciplines. Choose the journal that fits your niche.

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  • Vishay Intertechnology Releases ... - Microwave Journal

    2020-4-6 · Vishay Intertechnology, Inc. introduced the ThermaWick™ THJP series surface-mount thermal jumper chip. The Vishay Dale Thin Film device allows designers to transfer heat from electrically isolated components by providing a thermal conductive pathway to a ground plane or common heatsink. Featuring an aluminum nitride substrate with high 170 W/m°K thermal conductivity, the chip released …

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  • Physical Review Applied - Highlights

    Gigahertz Phononic Integrated Circuits on Thin-Film Lithium Niobate on Sapphire Felix M. Mayor, Wentao Jiang, Christopher J. Sarabalis, Timothy P. McKenna, Jeremy D. Witmer, and Amir H. Safavi-Naeini Phys. Rev. Applied 15, 014039 (2021) – Published 21 January 2021

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  • Coatings | Free Full-Text | Optical Properties and ...

    TiN and TiNxOy thin films share many properties such as electrical and optical properties. In this work, a comparison is conducted between TiN (with and without annealing at 400 °C in air and vacuum) and TiNxOy thin films deposited by using RF magnetron sputtering with the same pure titanium target, Argon (Ar) flow rate, nitrogen flow rates, and deposition time on stainless steel substrates.

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  • Chinese J. Polym. Sci - cjps.org

    2021-5-20 · The great potential of liquid-crystalline block copolymers (LCBCs) containing photoresponsive mesogens toward novel applications in photonics and nanotechnology has been attracting increasing attention, due to the combination of the inherent property of microphase separation of block copolymers and the hierarchically-assembled structures of liquid-crystalline polymers (LCPs).

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  • Prof. Gianluca M. Farinola Profile

    2019-3-7 · Journal of Medical Imaging Journal of Micro/Nanopatterning, Materials, and Metrology ... Enhanced chemical sensing organic thin-film transistors. M. Tanese, L. Torsi, G. Farinola , L ... polymer bearing amino acid substituents as active layer in enantioselective solid-state …

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  • Nanosheet wrapping-assisted coverslip-free imaging

    2020-1-10 · In order to achieve deep tissue imaging, a number of optical clearing agents have been developed. However, in a conventional microscopy setup, an objective lens can only be moved until it is in contact with a coverslip, which restricts the maximum focusing depth into a cleared tissue specimen. Until now, it is still a fact that the working distance of a high magnification objective lens with a ...

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  • Bearings 101: What They Are, How ... - Bearing

    2021-5-15 · Overview of Bearing Types Plane Bearings: Sleeve, Journal, Bushing. You can think of a plane bearing as a bearing in its simplest form: any non-rolling element that is incorporated where two surfaces rub together is a plane bearing.Common types include sleeve bearings and flange bearings (see below for more on both).

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  • Polymer - Journal - Elsevier

    2021-5-22 · SCImago Journal Rank (SJR): 1.016 ℹ SCImago Journal Rank (SJR): 2019: 1.016 SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact. View More on Journal Insights

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  • Advanced Materials Research | p. 5 | Scientific.Net

    “Advanced Materials Research” is a peer-reviewed journal which covers all aspects of theoretical and practical research of materials science: synthesis, analysis of properties, technologies of materials processing and their use in modern manufacturing. “Advanced Materials Research” is one of the largest periodicals in the field of materials engineering.

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  • Energies | Free Full-Text | Carbazole Electroactive ...

    In perovskite photovoltaics (PSCs), the role of the hole transporting material (HTM) is highly important as it significantly influents to the global device’s performance and stability. Hole transporter ensures the extraction of hole at the perovskite/HTM interface and transport it towards the cathode. Thus, accurate molecular design affording to efficient and cost-effective HTM is of ...

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  • Raney-platinum thin film electrodes for the catalysis

    2019-8-13 · Fuel cells capable of synthetic glucose catalysis have revolved around the implementation of abiotic catalysts that require extreme acid and alkaline environments. These are not compatible with implantable medical sensor systems, and hence, there is a need to develop abiotic catalysts that operate at neutral pH. This paper presents structural and electrochemical characteristics of a nanoporous ...

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  • Facile Solution Spin-Coating SnO2 Thin Film Covering ...

    The hole blocking layer plays an important role in suppressing recombination of holes and electrons between the perovskite layer and fluorine-doped tin oxide (FTO). Morphological defects, such as cracks, at the compact TiO2 hole blocking layer due to rough FTO surface seriously affect performance of perovskite solar cells (PSCs). Herein, we employ a simple spin-coating SnO2 thin film solution ...

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  • Tribology Transactions: Vol 45, No 3 - Taylor & Francis

    An Efficient Calculation Method of Nonlinear Fluid Film Forces in Journal Bearing Zhaobo Chen , Yinghou Jiao , Songbo Xia , Wenhu Huang & Zhiming Zhang Pages: 324-329

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  • Soft Robotics in Minimally Invasive Surgery | Soft

    2019-8-2 · A device that is constructed from materials whose elastic moduli are orders of magnitude greater than human tissues can still therefore be classified as a soft robot if the materials' cross ... depositing a thin film on the substrate after a given time due to the centrifugal effect. ... Journal of Engineering and Science in Medical Diagnostics ...

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  • Skin-like pressure and strain sensors based on

    2011-10-23 · a, Change in resistance ΔR/R 0 versus strain ɛ for a nanotube film on a PDMS substrate. When the film is strained (arrow, bottom left), ΔR/R 0 increases, and remains constant as the strain is ...

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  • Microfluidics for point-of-care diagnostic devices: a ...

    2020-7-29 · Such identification in remote locations or places with no access to medical laboratories is made possible with the recent development of point of care (POC) diagnostic devices.WHO has described criteria for choosing a POC diagnostic device, saying it should be “affordable, sensitive, user-friendly, rapid and robust, equipment-free and deliverable to end users” or ASSURED [1].

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  • A digital microfluidic system for serological

    2018-4-25 · Many point-of-care diagnostics rely on lateral flow assays or microfluidics; however, these methods generally cannot test multiple samples simultaneously. Ng et al . optimized inkjet-printed digital microfluidic (DMF) cartridges and a portable control system to perform serological immunoassays in remote settings. DMF devices use electrostatic forces to mix and separate reagents and samples in ...

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  • Boca Bearings :: Ceramic Bearing Specialists

    Boca Bearings is the leader in Ceramic and Ceramic Hybrid bearing technology for industrial and recreational applications.

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  • We publish scientific and engineering peer-reviewed ...

    The volume contains selected peer-reviewed papers presented at the AMS-Workshop “Advances in Materials Sciences-2020,” which took place in the framework of the III International Conference on Advanced Technologies in Aerospace, Mechanical and Automation Engineering - MIST: Aerospace-III, 2020 on November 20-21, 2020 (Krasnoyarsk, Russian Federation).

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  • Google Scholar

    Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

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