bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhanced Proliferation and Growth of Human Stem Cells on the Surface of HVOF-Sprayed Nano TiO2-HA Coatings
Authors: Lima R.S. , Dimitrievska S. , Bureau M.N. , Marple B.R. , Petit A. , Mwale F. , Antoniou J. 
Published: December 2022

Abstract
In this study, titania and hydroxyapatite nanopowder mixtures are deposited on medical grade titanium substrates by HVOF spraying. To assess bioperformance, human mesenchymal stem cells (hMSCs) were cultured from 1 to 21 days on the surface of HVOF-sprayed TiO2 and TiO2-HA samples. Plasma sprayed HA and uncoated Ti-6Al-4V substrates were used as controls. The active cultures were evaluated for cell proliferation, cytoskeleton organization, and cell-substrate interaction. The results for HVOF-sprayed TiO2-HA nanocomposite coatings show strong evidence of bone growth, proliferation, and attachment with cell-substrate interaction levels superior to those of air plasma sprayed HA coatings. Although there are no clear explanations for this favorable behavior, the topography and chemical composition of the surface of the coating appear to be playing important roles.
Enhanced TBC Performance with Nanostructured Bond Coats
Authors: Kim G.E. , Brochu M. , Moran A. , Addona T. 
Published: December 2022

Abstract
A noncryogenic milling process was recently developed to produce equiaxed nanostructured NiCrAlY powders. In this study, the powders are used to deposit metal bond coats, with and without thermal barrier topcoats, via HVOF and low-pressure plasma spraying. TBCs with bond coats derived from non-cryogenically milled nanopowder show a reduction in porosity and TGO growth rate, delayed formation of mixed oxides, and a 50% increase in cycles to failure during thermal cycle testing. The presence of very fine alumina in the powder and bond coats plays a significant role in these improvements.
Finite Element Analysis of Mechanical Responses of Plasma Sprayed Composite Coatings at the Structural Scale: Effect of the Pore Network Architecture
Authors: Espinosa C.P. , Antou G. , Denoirjean A. , Montavon G. 
Published: December 2022

Abstract
This study aims to better understand stress fields in composite coatings produced by plasma spraying. To that end, Al2O3-TiO2 coatings are deposited under conditions that result in architectures differing in pore content, crack density, and crack orientation. SEM images of the coatings are divided into discrete stress domains that are analyzed by finite elements. FEA simulations show that network architecture has a significant influence on stress fields and that secondary phases have a particularly negative effect. The paper also proposes a generic method for stress analysis based on representative volume elements and points out its advantages and limitations.
Modeling Aspects of High Velocity Impact of Particles in Cold Spraying by Explicit Finite Element Analysis
Authors: Li W.-Y. , Li C.-J. , Liao H. 
Published: December 2022

Abstract
In this study, cold spay particle impact behavior of a typical copper material is examined using ABAQUS finite element analysis software. Various combinations of calculation settings are explored, such as element type, adaptive meshing, contact interaction, and material damage, with the main focus on element distortion and its effect on output. The influence of mesh size on modeling accuracy is also discussed as are fundamental aspects of modeling cold spray particle deformation.
Numerical Investigation of the Influence of Injection Modes in the Solution Precursor Plasma Spraying
Authors: Shan Y. , Wei Z.P. , Coyle T. , Mostaghimi J. 
Published: December 2022

Abstract
Solution precursor plasma spraying is used to produce finely structured ceramic coatings with nano- and submicron features. The solution is injected into a plasma jet as a liquid stream or gas atomized droplets that break up into a finer mist. The deposition process and coating properties are extremely sensitive to torch operating conditions, injection modes, and substrate temperatures. This study employs numerical methods to investigate the size distribution of injected droplets for liquid stream and gas blast injection. Droplet or particle size, temperature, and substrate position is predicted for different injection modes.
Advanced Robot Programming and Coupled Numerical Simulation of Heat Transfer for Thermal Spraying
Authors: Candel A. , Gadow R. 
Published: December 2022

Abstract
This paper presents a new approach for computer aided generation of optimized trajectories in thermal spray systems. Through a combination of CFD and FEM modeling, the influence of torch trajectory and speed profile on heat and mass transfer during deposition is assessed along with its effect on residual stress and coating properties. Coating experiments with WC-Co as the spray material were performed on real components in order to validate the developed programming and simulation tools.
Hydraulic Characteristics and Thermal Properties of Metal Foam Sandwich Structure for High Temperature Heat Exchanger Applications
Authors: Salimijazi H.R. , Mostaghimi J. , Pershin L. , Coyle T.W. , Chandra S. 
Published: December 2022

Abstract
Open pore foams can be used as gas filters, catalyst supports, and heat exchangers due to their high gas permeability and heat conductivity. In this study, Ni-Cr skins were deposited on each side of a foam sheet by HVOF spraying to form a sandwich structure for use as a heat exchanger. The microstructure of the skins and the interface with the nickel foam struts were examined and the hydraulic characteristics and heat transfer properties of the sandwich structure were experimentally determined. Pressure drops across the heat exchanger were measured and found to be proportional to the square of the velocity of the coolant and a least square fit was used to solve for the permeability, K, and form coefficient, C, of the foam.
A Case Study of Arc-Spray Tooling Process for Production of Sheet Metal Forming Dies
Authors: Seong B.-G. , Kim J.-H. , Ahn J.-H. , Baik K.-H. 
Published: December 2022

Abstract
Arc spraying metal onto a master pattern is an emerging method for making molds and dies. The process, called arc spray metal tooling, involves several steps, which are shown in this paper. Three sheet metal forming dies of varying complexity were made to demonstrate and assess the process. Press tests were performed at a mold and die making facility. Arc-sprayed metal shells produced from carbon steel wire were found to have a tensile strength of approximately 23 kg/mm2, a Vickers hardness of 330 HV, and a dimensional accuracy of about ± 0.1 mm.
Synthesis and Microstructure Evolution of Nano-Titania Doped Silicon Coatings
Authors: Moroz N.A. , Umapathy H. , Mohanty P. 
Published: December 2022

Abstract
This study investigates the in-flight synthesis of titania and its doping into a silicon matrix resulting in a catalyst dispersed coating. In the experiments, a liquid precursor of titanium isopropoxide and ethanol is fed into a plasma gun forming a stream of titania nanoparticles into which a silicon-aluminum powder mixture is injected. The influence of process parameters and aluminum alloying on the microstructure and phase composition of the titania-doped silicon coatings is analyzed and presented.
Glaze Coatings Manufactured by Flame Spraying onto Thermally Sensitive Substrates: Heat Flux Measurements and Some Mechanical Properties
Authors: Arcondéguy A. , Preziosa O. , Montavon G. , Pateyron B. , Grimaud A. , Denoirjean A. , Gasgnier G. , Huguet C. , Planche M.-P. 
Published: December 2022

Abstract
This study shows that surface preheating is required to avoid delamination of flame sprayed coating glazes. In the experiments, preheating parameters are determined from heat flux measurements and potential substrate degradation is characterized and controlled by optimizing spray parameters. Coating adhesion is determined by pull-out tests and remains constant even after freeze-thaw cycling. Although gas tightness was not characterized, aging tests show that no water percolates through pore networks in the coatings.
Thermally-Sprayed BaCoTiFe10O19 Layers as Microwave Absorbers
Authors: Bolelli G. , Lusvarghi L. , Lisjak D. , Hujanen A. , Lintunen P. , Kanerva U. , Varis T. , Bégard M. , Richardt K. , Schläfer T. , Bobzin K. , Pasquale M. 
Published: December 2022

Abstract
This study shows that thermal spraying is a viable technique for the deposition of barium hexaferrite layers suitable for microwave absorption applications. More specifically, the study shows that impact quenching of molten BaCoTiFe10O19 hinders the crystallization of the hexaferrite phase. Consequently, when spraying conditions induce near-full melting of the feedstock, the coating mostly consists of spinel and a glassy phase, a state with poor magnetic properties. These phases can be converted to hexaferrite by annealing, but in order to obtain enough crystalline hexaferrite in as-deposited layers, a controlled amount of unmelted material must be preserved. Atmospheric plasma spraying proved to be well suited for this purpose, producing layers with excellent magnetic properties, close to those of pure crystalline BaCoTiFe10O19. In these coatings, dense regions entrain many unmelted agglomerates of micron-sized particles, effectively preserving the hexaferrite phase.
The Effects of Crystallinity and Microstructure on Corrosion Resistance of Atmospheric Plasma Sprayed Cu-Based Bulk Metallic Glass Coating
Authors: Kim J.H. , Kumar S. , Yoon S. , Lee C. 
Published: December 2022

Abstract
In this study, Cu-based bulk metallic glass coatings were deposited by atmospheric plasma spraying with different hydrogen flow rates. The crystallization and oxidation of the coatings is assessed along with corrosion resistance. As thermal energy in the plasma jet increases, the melting fraction and oxidation of particles in the coating increases as does porosity. All of these factors have an effect on the corrosion resistance of Cu-based bulk metallic glass coatings and their relative impact is discussed.
Corrosion of APS- and HVOF-Sprayed Coatings of the Al2O3-TiO2 System
Authors: Toma F.-L. , Stahr C.C. , Berger L.-M. , Herrmann M. , Deska D. , Michael G. 
Published: December 2022

Abstract
This paper presents the results of corrosion investigations performed on thermal spray coatings with different compositions in the Al2O3-TiO2 system. The coatings were deposited on stainless steel via APS and HVOF spraying and metallographically prepared cross sections and surfaces were characterized before and after corrosion testing in NaOH and H2SO4 solutions at various temperatures. Opposite of expectations, APS coatings were found to be more corrosion resistant than the denser HVOF-sprayed layers.
A Comparative Study on the Role of Zirconium as a Minor Addition in HVOF Spray Ni-20Cr Coatings in Enhancing the Life of Boiler Steel
Authors: Kaushal G. , Singh H. , Prakash S. 
Published: December 2022

Abstract
The aim of this study is to investigate the role of zirconium (Zr) in HVOF coatings in order to formulate a high-temperature oxidation-resistant composition. Ni-20Cr coatings with and without 1% Zr additions were deposited on 347H boiler steel by HVOF spraying and their oxidation behavior was assessed at a temperature of 900 °C under cyclic conditions. Test specimens were also subjected to actual boiler environments to ascertain their erosion-corrosion behavior. Weight change measurements were used to determine high-temperature oxidation kinetics as well as erosion-corrosion resistance. The specimens were examined after each thermal cycle to observe physical changes and spallation in their oxide scales. It was found that the addition of Zr in the Ni-20Cr coating reduced the oxidation rate but had little effect on erosion-corrosion resistance.
Industrial Applications for Polymer Coatings with Release Properties in Combination with Thermal Spray Coatings
Authors: McCook J. , Hyllberg B. 
Published: December 2022

Abstract
Release or nonstick properties are not typically achieved through thermal spraying because of the high surface energy of the resulting deposit. Polymer coatings can provide release properties but are low in durability. However, by adding a nonstick low-friction polymer or release topcoat to a hard metal matrix deposit, a variety of properties can be incorporated in the coating solution. This paper explains how such coatings are produced and examines the tradeoffs involved in the selection of materials. It presents numerous examples of successful industrial applications and introduces an accelerated test that has been developed to predict release performance over the life of the coating which correlates well to field conditions.
Influence of Powders on Thermal Spray Coating Structures: Recent Developments in Nano or Finely Structured Coatings and Some Safety Issues
Authors: Fauchais P. , Montavon G. , Bertrand G. 
Published: December 2022

Abstract
This paper reviews various powder treatments and particle alteration processes and evaluates their effect on the microstructure and properties of thermal spray coatings. It discusses the benefits and drawbacks of thermal plasma treatments for powders, the use of self-propagating high-temperature synthesis (SHS), and different ways nanopowders are produced and sprayed. It covers several spraying methods and a wide range of materials, including ceramics, metals and alloys, cermets, and composites. It also covers mechanical alloying and powder milling processes and addresses the potential risks of inhaling nanopowders.
Study of In-Flight and Impact Dynamics of Non-Spherical Particles from HVOF Guns
Authors: Kamnis S. , Gu S. 
Published: December 2022

Abstract
In this study, computational methods are used to examine the in-flight dynamics of non-spherical WC-Co particles sprayed from HVOF guns and their impingement on substrates. Two sets of computational models are developed. First, the in-flight particles are simulated in a CFD-based combusting gas flow. Particle information prior to impact is extracted from the CFD results and fed into a FEA model to dynamically track the impingement of particles on the substrate. Particle morphology is examined for both spherical and non-spherical powders to establish critical particle impact parameters for bonding.
Porous Architecture of SPS Thick Y-PSZ Coatings Structured at the Sub-Micrometer Scale
Authors: Bacciochini A. , Montavon G. , Denoirjean A. , Fauchais P. 
Published: December 2022

Abstract
The aim of this study is to quantify the pore network architecture of thick zirconia coatings deposited by suspension plasma spraying of nano-sized particles. It is shown by FESEM fractography that the coatings exhibit a granular structure with a lamellar layer at the substrate interface and that the average void diameter is orders of magnitude smaller than the resolution of conventional SEM systems.
Influence of Microstructure and Mechanical Properties on the Tribological Behavior of Flame Sprayed Al2O3-TiO2 and WC-NiFeCr Coatings
Authors: González A.G. , Vargas F. , López M.E. , Toro A. 
Published: December 2022

Abstract
In this work, the influence of microstructure, hardness, elastic modulus, and fracture toughness on the tribological behavior of flame-sprayed Al2O3-TiO2 and WC-NiFeCr coatings is investigated. Fracture toughness was found to be the most influential property, with higher toughness corresponding to greater wear resistance. This relationship, however, is verified only up to the point where the applied stresses cause detachment of particles from the surface. Hardness emerged as a less dominant factor than fracture toughness, elastic modulus, and porosity due to the fact that ceramic coatings, despite their high hardness, have low relative wear resistance.
Remelting of Flame Spraying PEEK Coating Using Lasers
Authors: Soveja A. , Costil S. , Liao H. , Sallamand P. , Coddet C. 
Published: December 2022

Abstract
This study analyzes the effects of laser remelting on the morphological structure and adherence of flame-sprayed PEEK coatings on stainless steel. Different types of lasers were used with wavelengths of 1.064 mm (Nd:YAG), 10.6 mm (CO2), and 0.88 mm (diode). It was found that the longer the wavelength, the more compact the coating, but the less well-adhered. By making adjustments to compensate for the wavelength-dependent absorption coefficient of PEEK, both coating properties were improved.
High Performance – Low Costs: Iron Based Coatings with Improved Microstructures for Wear and Corrosion Applications
Authors: Bobzin K. , Schlaefer T. , Richardt K. , Warda T. 
Published: December 2022

Abstract
The objective of this work is the development and application of Fe-based wear- and corrosion-resistant coatings with uniform density and even coating surfaces. The coatings obtained were analyzed with respect to microstructure, hardness, and surface roughness.
Comparison of Nanometric and Micrometric Alumina Coatings on Wear Resistance
Authors: Ageorges H. , Vert R. , Darut G. , Zishuan F. 
Published: December 2022

Abstract
In this study, micro and nanostructured alumina coatings were plasma sprayed on steel substrates using different combinations of spraying parameters. Test results show that the nanostructured coatings have lower hardness, a lower friction coefficient, and higher wear resistance than microstructured alumina coatings.
UPAYA KELUARGA TENTANG PENCEGAHAN RISIKO CEDERA PADA LANSIA DI WILAYAH KELURAHAN TELUK DALAM BANJARMASIN
Authors: Amalia Deasy , Mahdalena Mahdalena 
Published: December 2022

Seiring bertambahnya usia, penurunan kemampuan berbagai organ, fungsi dan sistem tubuh pada lansia bersifat alamiah. Kemudahan beraktivitas membantu lansia melakukan kegiatan tanpa hambatan, menggunakan energi minimal dan menghindari cedera.
Penelitian bertujuan untuk mengetahui upaya keluarga dalam pencegahan risiko cedera pada lansia di wilayah Kelurahan Teluk Dalam Banjarmasin. Penelitian termasuk jenis deskriptif. Populasi penelitian adalah keluarga yang memiliki lansia berusia ≥60 tahun dan tinggal serumah yang berjumlah 65 responden menggunakan total populasi. Instrumen yang digunakan lembar observasi (checklist).
Hasil penelitian menunjukkan sebagian besar upaya keluarga untuk mencegah risiko cedera pada lansia sudah baik yaitu sebesar 64,4%, sebagian besar dari segi fisik lansia sebesar 53,8% dan dari segi lingkungan sebesar 72,3% sudah baik.
Peran perawat diperlukan untuk memberikan penyuluhan kesehatan agar keluarga dapat mengetahui dan mempertahankan upaya dalam mencegah risiko cedera pada lansia.
EFEKTIVITAS METODE KOMPRES HANGAT PADA PENDERITA REUMATOID ATRITIS DENGAN NYERI AKUT PADA LANSIA
Authors: Rosalina Ila , Dwi Nurbadriyah Wiwit , Muhamma Zulfikar 
Published: December 2022

Rheumatoid arthritis (RA) adalah penyakit autoimun dimana sistem kekebalan tubuh keliru menyerang bagian sendi. Terdapat beberapa faktor yang berkaitan dengan kejadian reomatoid a rthritis antara lain faktor ginetik, lingkungan, hormon, imunologi, dan faktor-faktor infeksi. Tujuan literatur review ini untuk mengetahui “Efektivitas Metode Kompres Hangat Pada Penderita Reumatoid Atritis Dengan Nyeri Akut Pada Lansia”. Dalam penulisan artikel ini menggunakan metode literatur review, yaitu sebuah pencarian literatur baik nasional maupun internasional yang diperoleh dari Google Scholar dan Crossref. Pada tahap awal pencarian jurnal diperoleh 5 artikel jurnal dengan perbatasan waktu yaitu sejak tahun 2016 sampai 2020 yang menggunakan kata kunci : “Reumatoid Arthritis”, “Nyeri Akut”, Terapi : “Kompres hangat” dan “Lansia”. Hasil menunjukkan bahwa 4 atikel dengan menggunakan terapi kompres hangat, baik kompres hangat serai maupun jahe sangat membantu menurunkan intensitas nyeri pada lansia yang menderita reumatoid arthritis. Penggunaan panas mempunyai keuntungan meningkatkan aliran darah ke suatau area dan memungkinkan dapat menurunkan nyeri, panas dan lembab dapat menghilangkan kekakuan akibat artritis. Metode kompres hangat ini sangat efektif bagi penderita reumatoid arthritis karena dapat meningkatkan aliran darah kesuatu area dan menghilangkan kekakuan pada sendi.
SISTEM PENDUKUNG KEPUTUSAN PENJUALAN KELAPA KEPADA TOKE DENGAN METODE SAW DI KELURAHAN SUNGAI PIRING
Authors: Kurniawan Kharisma , Wardah Siti , Rasyid Ridha Muh. 
Published: December 2022

Proses penjualan kelapa yang terjadi di kelurahan sungai piring adalah para petani menjual kelapa nya kepada toke dan kemudian toke menjual kelapa tersebut kepada perusahaan. Untuk di sungai piring sendiri ada 3 toke kelapa yang membeli kelapa dari petani dengan harga yang berbeda dan persyaratan yang berbeda-beda pula. Selama ini para petani menjual kelapa nya kepada toke secara random, sehingga diperlukan sebuah sistem pendukung keputusan (SPK) yang merupakan bagian dari sistem informasi berbasis komputer termasuk sistem berbasis pengetahuan atau manajemen pengetahuan yang dipakai untuk mendukung pengambilan keputusan. Metode yang digunakan adalah Simple Additive Weighting (SAW) yaitu metode penjumlahan berbobot untuk menyelesaikan suatu masalah. Hal ini dilakukan agar para petani dapat memilih toke terbaik untuk menjual kelapa nya agar mendapatkan value yang lebih besar.
SISTEM INFORMASI PELAYANAN JASA PADA MUTIARA LAUNDRY BERBASIS WEB
Authors: Mispuanda  , Abdullah  , Ilyas  
Published: December 2022

Salah satu usaha laundry yang ada di tembilahan yaitu, mutiara laundry. Mutiara laundry adalah sebuah usaha rumahan yang bergerak di bidang jasa pelayanan pencucian pakaian yang beralamat di Jl. Soebrantas, Tembilahan Kota, Tembilahan, Kabupaten Indragiri Hilir, Riau 2924. Usaha binatu atau laundry ini sudah berjalan selama beberapa tahun belakangan ini. Permasalahan yang terjadi pada usaha laundry ini adalah, kesulitan mengelola data pelanggan, data status pelanggan, data transaksi, data laporan pelanggan, laporan jasa cuci, dan laporan transaksi. Kemudian permasalahannya adalah sistem pengelolaan data pelanggan dilakukan secara manual dan sederhana sehingga rentan terjadinya kesalahan pendapatan.untuk membantu mengelolah agar pengantaran baju yang sudah dilaundry, kemudian untuk mempermudah pengelolaan data pelanggan melalui situs web.secara efisien dan memberikan kemudahan baik kepada user dan admin.
Diabetes gestacional: aspectos relacionados ao diagnóstico, risco e tratamento
Authors: Ribeiro Grasiella da Silva , Oliveira Ingrid Aline Silva de , Araújo Cecília de Castro , Sousa Douglas Ràdmer Rocha , Almeida Anne Cristine Gomes de 
Published: December 2022

Introdução: A Diabetes é uma descompensação metabólica de várias origens. Existem 3 tipos de Diabetes Mellitus: tipo 1 ou insulina dependente; tipo 2 ou não insulina dependente e diabetes gestacional. Uma gestação que se desenvolve com Diabetes Mellitus Gestacional (DMG) é classificada como de alto risco. O tratamento do Diabetes Mellitus em geral é multifatorial, evidenciado na mudança dos hábitos do paciente. Objetivo: O objetivo desse estudo é descrever os aspectos fisiopatológicos do DMG e suas consequências para a mulher grávida e o feto, além de identificar suas possíveis causas, riscos e tratamento. Metodologia: O estudo foi desenvolvido diante de uma revisão sistemática. Resultados: Foram selecionados 10 artigos que atendiam aos critérios previamente determinados pelo estudo, onde os principais resultados destacavam fatores alimentício, comportamentais, idade e sobrepeso como fatores de risco para DMG. Resultador e discussões: Além de salientar a importância do diagnóstico precoce logo no pré-natal, onde todo os profissionais, tem sua importância durante o tratamento. Conclusão: Com esta pesquisa pode-se concluir que o diabetes mellitus gestacional precisa de mais atenção da rede pública e privada. São necessárias a criação de estratégias em educação e saúde acerca dos conhecimentos sobre o diabetes mellitus e de como ele pode ser evitado.