bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental and Numerical Study of the Effect of Gas-Shrouded Plasma Spraying on Cathode Coating of Alkaline Electrolysis Cells
Authors: Liu T. , Ansar A.
Published: November 2022

Dual layer electrode coating for alkaline water electrolysis was prepared by plasma spraying. For improving performance this work aims at reducing the oxide in electrode coating. Regarding the necessity of obtaining high specific area, atmospheric plasma spray was employed under protection of argon which was used as shrouding gas. Composite cathode was established on Ni-coated perforated steel sheet with crushed and gas atomized Nickel-based alloy powders. The dual-layer structure was a composite of 5 layers of NiAl at the bottom and 10 layers of NiAlMo as the top layer. Microstructure and morphology were studied by scanning electron microscope (SEM). Element content was estimated by energy dispersive spectrometer (EDS). Enthalpy probe was introduced for measuring plasma temperature and velocity as well as gas composition. Numerical calculation was carried out with same condition for better understanding the shrouding effect. The results showed moderate protection by using of arranged gas shrouding. Overall, in the dual layer region, oxygen content was decreased by 0.3%, from 3.46% to 3.15%. With gas shrouding coating exhibited similar element contents as coating sprayed by VPS. However, no obvious difference was observed in microstructure and morphology with or without gas shrouding.
The Influence of Spray Parameters on the Characteristics of Hydroxyapatite In-Flight Particles, Splats and Coatings During Micro-Plasma Spraying
Authors: Liu X. , Wang Y. , Zhou Z. , Wang G. , Tan Z. , He D.
Published: November 2022

Phase composition and microstructure of hydroxyapatite (HA) significantly affects the biological and mechanical properties of final hydroxyapatite (HA) coating. In the present study, HA coatings were deposited on Ti-6Al-4V by micro-plasma spraying (MPS) using different spray parameters. The influence of spray parameters on the composition and microstructure of the coatings were investigated. To understand the formation mechanism of HA coatings, the in-flight particles and splats were examined as well. The morphologies of coatings surface, cross-sections, initial powder, in-flight particles and splats were characterized by scanning electron microscopy (SEM). Xray diffraction (XRD) was employed to analyze the phase composition. Three typical HA coatings were fabricated. The results indicated that the coating composition and microstructure were tightly related to the melting state of inflight particles. And this was influenced by the spraying parameters. The formation mechanisms of these coatings were discussed.
Effects of Carbon Contents and Gas Type on Hardness and Wear Resistance of Ferrous Coating Fabricated by Twin Wire Arc Spray Process
Authors: Lee J. , Kim J. , Lee C.
Published: November 2022

In automotive industry, thermal spray process is used to reduce engine weight by replacing cast iron liners inserted in cylinder bores. Especially, twin wire arc spray is one of widely used thermal spray processes with inexpensive cost and high deposition rate. In this study, two kinds of wire materials, low carbon steel (0.07 wt.%C) and high carbon steel (0.80 wt.%C) were deposited by twin wire arc spray process using two kinds of process gas (i.e., compressed air and nitrogen) in order to elucidate effects of carbon contents of ferrous coating and process gas type on the hardness and wear resistance of coating. In case of hardness, low carbon steel coatings had higher hardness when air was used as process gas whereas high carbon steel coatings had higher hardness when nitrogen was used, which was caused by the counter effects of carbon loss and oxide formation. The results of sliding wear test in lubricated condition indicated that coatings with higher hardness have better wear resistance and oxides improve wear resistance by playing a role as solid lubricant. The main wear mechanism was splat delamination induced by inter-splat crack, and traces of other wear behaviours such as splat tip fracture and abrasive wear were also observed.
Effect of Different Shroud Principles on the Performance of a NiTi Coating Produced by Means of Twin-Wire Arc Spraying (TWAS) Process
Authors: Tillmann W. , Abdulgader M. , Bezerra D. , Pohl M. , Gembaczka J.
Published: November 2022

The super-elasticity behavior of a NiTi-shape memory alloy (SMA) is very promising regarding cavitation resistance. The need of high vacuum conditions by thermal spraying processes, to avoid oxidation, has always been and still is the main obstacle for the widespread of NiTi as a coating material. This work deals with studying the effect of the different shroud concepts on the obtained oxide content and the phases of the obtained twin wire arc sprayed (TWAS) coatings. The concepts include the use of argon as a shield in gas shroud (GS) as well as the use of an extended air cap attachment as a massive shroud (MS). The use of MS-concept led to a significant decrease in oxide content and therefore was selected to spray pre-alloyed NiTi-SMA wires. The standoff distance between the MS-outlet and the substrate surface shows also an effect on the obtained phases and thus on the behavior of the obtained coatings. At lower standoff distance a pseudo-elastic behavior was obtained and therefore a higher cavitation and wear resistance. The use of argon as atomization and shield gas with a massive shroud could be a cost-effective alternative for vacuum process in case of spraying NiTi-SMA pre-alloyed feedstock materials.
A Comparative CFD Study of the Influence of Combustion Chamber Geometry in the HVSFS Process
Authors: Plachetta M. , Eckert P. , Kroner M. , Killinger A. , Krieg P. , Gadow R.
Published: November 2022

Suspensions have shown a great potential for being employed as the spraying materials in flame spraying processes with the aim of producing thin and dense coatings. The internal axial injection of a suspension within processes like the high-velocity suspension flame spraying (HVSFS) offers the advantage of complete suspension entrainment within the gas stream, which therefore results in enhanced momentum and heat transfer to the particles. Experimental assessment of the achieved particle velocities and temperatures within the combustion chamber is nonetheless practically infeasible. A better insight into the process is attainable through employing computational simulations. Following a computational fluid dynamic (CFD) modelling approach for HVOF processes, combustion and gas flow turbulences were simulated for different combustion chamber geometries and ethene/oxygen ratios commonly used in the HVSFS process. Simulations were done with the commercial software ANSYS CFX 16.2. To account for the highly turbulent flow characteristics, the k-ε model and the Shear Stress Transport (SST) turbulence model were chosen, employing an eddy-dissipation-model for fuel gas combustion. Second-order upwind discretization was used to enable a good resolution of flow features like shock diamonds. The results of the simulation using different levels of detail of the combustion reaction were compared to experiments employing the modelled combustion chambers and gas flows. Chamber pressure and positions of the shock diamonds were monitored in order to allow a qualitative evaluation of the calculated values.
Effect of Nozzle Geometry on the Microstructure and Properties of HVAF Sprayed Hard Metal Coatings
Authors: Matikainen V. , Koivuluoto H. , Vuoristo P. , Schubert J. , Houdková Š.
Published: November 2022

Thermally sprayed hard metal coatings are the industrial standard solution for numerous demanding applications. Often the performance of thermally sprayed coatings is improved by using finer particle sizes due to improved surface finish and decreased defect sizes. In the aim of utilizing finer particle and primary carbide sizes in thermal spraying of hard metal coatings, several approaches have been studied to control the spray temperature. The most viable solution is to use the modern high velocity air-fuel (HVAF) spray process, which has already proven to produce high quality coatings with dense structures. In HVAF spray process, the particle heating and acceleration can be efficiently controlled by changing the nozzle geometry. In this study, fine WC-10Co4Cr powder (-25+5 µm) was sprayed with three nozzle geometries to investigate their effect on the particle temperature, velocity and coating microstructure. The study demonstrates that the particle melting and resulting W2C formation can be efficiently controlled by changing the nozzle geometry from cylindrical to convergent-divergent. Moreover, the average particle velocity was increased from 780 to over 900 m/s. This increase in particle velocity significantly improved the coating structure and density while deposition efficiency decreased slightly. Further evaluation was carried out to resolve the effect of particle in-flight parameters on coating structure and cavitation erosion resistance, which was significantly improved with the increasing average particle velocity.
High Speed Steel Deposited by Pulsed PTA – Frequency Influence
Authors: Rohan P. , Boxanová M. , Zhang L. , Kramar T. , Lukac F.
Published: November 2022

The powder of HSS (HSS23, AISI M3:2) was deposited by pulsed-PTA method on to low alloyed steel substrate. The influence of pulsation frequency was evaluated on the surface of deposits and on their cross sections by both light microscope and by Vickers hardness measurement apparatus and extreme properties mapping (XPS). Surfacing parameters at current frequency from 0 to 200Hz were tested during deposition of single weld bead. Dilution and heat affected zone were evaluated and compared for all tested parameters. The presence of retained austenite after deposition was determined by X-ray diffraction. The beads deposited with different frequencies differ in their shape, dilution degree, microhardness and penetration depth. It was found that the microhardness increases with current frequency.
Aptitude of Different Types of Carbides for Production of Durable Rough Surfaces by Laser Dispersing
Authors: Wank A. , Schmengler C. , Müller-Roden K. , Beck F. , Schläfer T.
Published: November 2022

Different types of tungsten carbide materials (fused tungsten carbide, nickel clad fused tungsten carbide, macrocrystalline WC and sintered and crushed WC/Co) are used for laser dispersing of construction steel surfaces. Surface roughness analyses and metallographic evaluation of cross sections concerning efficiency of carbide embedding as well as crack formation tendency are carried out. Generally, all types of tested carbides permit production of rough surfaces with metallurgical bonding to the metallic matrix, but only use of nickel clad fused tungsten carbide permits to prevent crack formation. The effectiveness of silicon and silicon carbide for production of durable rough surfaces on aluminium alloys is investigated. Both silicon and silicon carbide qualify for production of rough surfaces by laser dispersing. While silicon carbide particles show higher hardness, use of silicon does not include danger of embrittlement due to formation of aluminium carbide.
Ultrafine Powders for Low-Power HVOF and HV-APS Spraying
Authors: Matthäus G. , Verlotzki V.
Published: November 2022

The currently available powders are for conventional high power HVOF or APS. There is an increasing need for low-power HVOF and HV-APS torches for coating temperature-critical parts and inner diameters. Using them for the new applications causes massive restrictions such as poor coating efficiency, much overspray, rough surface or defects in the layer structure. However, just using ultrafine powders does not solve the problem. The disadvantages in terms of fluidity and oxidation resistance need to be solved, too. Beside the development of modern HVOF, ID-HVOF and Three-cathode-APS coating systems Thermico pursues a continuous enhancement of customized powders. Due to this steady development, Thermico has realized spraying inner diameters with just 10 – 20 mm stand off by using a new WC carbide powder which is able to absorb enough energy out of the low power flame to build up a very dense high quality coating. The modified WC Co 83 17 powder is available for ID HVOF. The high quality coating of outer diameters with a HV-APS is another solution which Thermico has successfully developed. Beside this Thermico had the goal to establish a high quality HV-APS coating to prices competitive to HVOF.
Impact of the Stand-Off Distance and Spray Angle on the Corrosion, Cavitation and Erosion Behaviour of the Thermal Spray Layers Deposited by the Three-Cathode Spraying
Authors: Oechsner M. , Siebers M. , Andersohn G. , Ellermeier J. , Bobzin K. , Zhao L. , Öte M. , Königstein T.
Published: November 2022

Fe-based coatings, such as novel FeCrMnBC alloys, have both economic and ecological advantages compared to other coatings like Ni-based or Co-based coatings. In recent years, high performance Fe-based wear and corrosion resistant coating systems have been developed. Some of them have even been introduced into the market. However, the suitability of the FeCrMnBC alloy as coating for cast iron under complex erosive and corrosive stresses in particle-loaded fluids for pump parts has not been investigated yet. Especially the impact of the process robustness of three-cathode plasma spraying coatings applied with variable process parameters like stand-off distance and spray angle is in the focus of interest. The objective of the present work has been the characterization of novel FeCrMnBC alloys, for the first time deposited via Thermal Spray processes. The corrosion resistances as well as the cavitation and erosion properties were separately evaluated by current density-potential measurements and supersonic cavitation in artificial sea water. Erosion corrosion behavior has been investigated in a pump test rig with 10 wt.-% corundum (Al2O3) particles. The results show that the reduction of spray angle and the variation of stand-off distance limit the corrosion and cavitation resistance in different ways. The erosion behavior shows only small variations for the tested parameters. The results reveal that the FeCrMnBC coatings exhibit high process robustness for the chosen parameter variations and a large potential to improve the protection of cast iron even for not optimized conditions.
Thermal Spraying of Pure Nickel Via HVOF: Effect of Fuel and Shroud Gas Variation on Particle In-Flight Characteristics and Final Coating Properties
Authors: Hambrock C. , Grill C. , Schimo G. , Hassel A.W.
Published: November 2022

In the course of this investigation, thermal spraying with different fuel and shroud gas combinations was investigated in terms of its effect on the in-flight particle properties (temperature, velocity) and on the final coating properties (coating thickness, porosity, oxygen content and corrosion behaviour). Independent on the shroud gas, the particle in-flight temperature and velocity were highest when using ethylene as fuel gas and lowest when using propane. Methylene resulted in intermediate properties. The change in the shroud gas from air to nitrogen generally resulted in lower in-flight particle temperatures and also lower velocity. The coating properties in terms of porosity and oxygen content directly correlated to the particle in-flight properties. With decreasing velocity and increasing temperature, the porosity and the oxygen content increased, respectively. The corrosion behaviour of the nickel coatings was studied in 0.5 M sulfuric acid media by means of potentiodynamic polarization curves. Good corrosion properties were observed when methylene and air served as fuel gas and shroud gas, respectively.
Effect of Composition on the Performance of Coatings for the Protection of Metal Surfaces Against Open Flame
Authors: Ismagilova R. , Baldaev S. , Mazilin I. , Baldaev L. , Fedorova M.
Published: November 2022

High temperature and fire-proof protection of metal structures issue involves formation of dense insulating coatings which possess low thermal diffusivity and capable to withstand high temperatures caused by open flame and other severe conditions. Such coating should be considered as sacrificial as it slowly decomposes during extreme high temperature impact. Such coatings intend significant extension of time required for heating and development of inelastic deformation in metal-based structures increasing service time in severe conditions. Several modifications of fire-proof coatings composed of organic binders were developed and investigated. Fireproof coatings were subjected to open flame test on an adapted burner rig. Open flame simulation with 1100°C was carried to estimate coating’s protection properties. Investigates coating showed reduction of temperature for 1000°C during 10 minutes. Such results achieved due to spumescent effect of coating’s coke layer.
Design of Cold Spray Nozzle to Optimize the Particle Velocity by Numerical Simulation
Authors: Han T. , Li W. , Guo X. , Yang X.
Published: November 2022

This study investigated the accelerating behavior of spray particles during cold spraying (CS) by employing a computational fluid dynamics program, FLUENT. Optimization of the dimensions of CS nozzle was conducted to maximize particle velocity. The results show that the expansion ratio, divergent length, particle density and size, operating temperature significantly influence particle acceleration. It is found that the spray particles in nozzles with long divergent length can obtain a relatively higher impact velocity, but too long divergent length will reduce the particle velocity. Besides, the particle impact velocity shows a downward trend with increasing the particle size or density. Hence, the optimal divergent length should increase with the increase of particle mass. Moreover, higher gas temperature leads to a higher particle velocity, but it has no influence on the optimal divergent length.
Liquid Flame Spray Fabrication of WO3-Graphene Nanocomposite Coatings for Gas-Sensing Applications
Authors: Liu Y. , Huang J. , Gong Y. , Li H.
Published: November 2022

There have been increasing demands for adequate gas sensors to monitor O3, a respiratory irritant gas associated with a spectrum of adverse health events. Here we report film construction by liquid flame spray route and characterization of nanostructured WO3-reduced graphene oxide (rGO) composites and their gas-sensing activities to O3. The starting feedstock was prepared from WCl6 and rGO for pyrolysis synthesis by flame spray. Nanosized WO3 grains exhibited oriented nucleation on rGO flakes and rGO retained intact nano-structural features after the spraying. Constrained grain growth of WO3 was realized in the rGO-containing films with 60-70 nm size as compared to ~220 nm in the pure WO3 film. The WO3-rGO film sensors showed quicker response to O3 and faster recovery than the rGO-free WO3 film sensors. Addition of rGO in 1.0wt.% or 3.0wt.% in the films caused significantly reduced effective working temperature of the film sensors from ~250°C to ~150°C. These results might shed some light on liquid flame spray fabrication of novel functional nanocomposites for gas-sensing applications.
Functional WC Cemented Carbide by the Direct Selective Laser Forming
Authors: Yamada J. , Ibe H. , Sato K. , Kato N.
Published: November 2022

Metal and polymer additive manufacturing is advancing on several applications. On the other hand, materials cermet such as WC/Co for functional structure molding by additive manufacturing are under studying. There are few reports for WC cemented carbide additive manufacturing process by forming with polymer binder then sintering. This indirect process has difficulties to make high precision functional parts due to shape control during additional sintering process. Direct forming is desired for high precision parts. However, factors and/or mechanism to achieve direct formed functional structure have been unclear in many aspects. In this study, the process conditions of the direct selective laser melting were investigated to achieve dense and hard WC cemented carbide mold parts. The optimization of laser melting conditions for WC/Co agglomerated and sintered powder was examined. In order to forming a dense and high hardness parts, the optimum conditions between powder preparation and laser energy density which related with laser power, scan speed and spot diameter were appeared by this experiments. Moldings more than 1500HV are achieved at low laser energy density. However, some of pores were observed in moldings. In addition, the dense molding could be obtained by high laser energy density. This means optimum dense functional WC cemented carbide molding is available by optimization of the molding condition. It is applicable for growing industries like automotive, aviation and cutting tool.
Amorphous Steel Coatings Deposited by HVOF and Cold Gas Spray Processes
Authors: Tului M. , Bezzon A. , Marino A. , Marra F. , Matera S. , Pulci G.
Published: November 2022

This paper considers the deposition of a commercial steel powder with a chemical composition that allows the coating to obtain an amorphous structure using thermal spray techniques. The processes used are characterized by high cooling speeds of the particles after the impact upon the substrate. The powders were sprayed with two different processes: cold gas spray (CGS) and high velocity oxyfuel (HVOF). A comparison between the samples obtained reveals that only the CGS coatings are completely amorphous; the HVOF samples exhibit nanocrystalline phases, detected with XRD analysis and SEM micrographs. Furthermore, the CGS coatings are more compact and show lower hardness with a comparable Young’s modulus. A hypothesis is that the formation of the amorphous structure is related to plastic deformation at impact (due to the high energy of the particles), rather than to the temperature; the mechanism could resemble that of a severe plastic deformation process. Additional thermal treatments and mechanical tests are in progress to investigate the toughness and other mechanical properties of the coatings.
High Velocity Atmospheric Plasma Sprayer
Authors: Chivel Y.
Published: November 2022

An electromagnetic plasma-dynamic system and method for producing high-power plasma flows at atmospheric pressure with high frequency has been developed. In this system, plasma flow velocity reaches 2-4 × 103 m/s at temperatures up to 20 × 103 K. This paper reports results from evaluation of this system for surface layer modification and processing with very high particle acceleration.
Non-Parabolic Isothermal Oxidation Kinetics of Low Pressure Plasma Sprayed MCrAlY Bond Coat
Authors: Zhang B.-Y. , Yang G.-J. , Li C.-X. , Li C.-J.
Published: November 2022

The non-parabolic isothermal oxidation kinetics of low pressure plasma sprayed MCrAlY bond coat was investigated. To qualitatively explain the abnormal growth phenomenon of thermally grown oxides (TGO), the changes that occurred to their microstructure during the oxidation process were studied. Based on these observations, a modified model was developed to understand and quantitatively predict the non-parabolic oxidation and growth kinetics of TGO. This modified model, which fits well with experimental results, provides a novel method to quantitatively predict the long-term growth behaviour of TGO, and thereby benefits the development of long-life and highly reliable thermal barrier coatings.
Micro Structure and Characterization of Hydroxyapatite Coating (HAP) by Rod Flame Spray Process
Authors: Upadhyaya R. , Shrivastava S. , Modi S. C. , Modi A.
Published: November 2022

Hydroxyapatite (HAP) is available in powder form for plasma spraying. HAP powder was fabricated indigenously in the Rod form of diameter 4.17mm. This rod was sprayed with the help of MEC make Rodojet 9810 (flame spray process). Rodojet parameter were optimised for HAP rod. Crystallinity and purity level of HAP rod was measured. XRD and SEM were used to analysed the microstructure of rod and coating. The microstructure, mechanical properties of the coating were investigated, and measure the Ca/P ratio of coating and rod. The micro-hardness and elastic modules were determined by indentation tests and bond strength was determined by tensile test. The results showed that the microstructure, mechanical properties was observed same as in plasma spray process. Porosity was observed more than 15%. The bond strength of coating was observed 20 MPa. Scratch test was done to measure the cohesive strength of coating. This new experiments play an important role for reduction the cost of the HAP powder coating.
Development of Methodology of Cohesive Strength Evaluation of Thermally Sprayed Coatings
Authors: Schubert J. , Česánek Z.
Published: November 2022

Measuring the cohesive strength of thermally sprayed coatings is relatively difficult matter, which can be accessed in many directions. This issue is nowadays solved by use of Scratch test method. This method is not completely sufficient for the cohesive strength testing because the coating is under load of combined stresses during the Scratch test. The reason to develop this method was need for exact measurement of tensile cohesion toughness of thermally sprayed coatings, which could provide results as close to a classic tensile test as possible. Another reason for development of this method was the impossibility of direct comparison with results obtained by other methods. Tested coatings were prepared using HP / HVOF (Stellite 6, NiCrBSi, CrC-NiCr and Hastelloy C-276). These coatings were selected as commonly used in commercial sector and on because of rising customer demand for ability to provide such coating characteristics. The tested coatings were evaluated in terms of cohesive strength (method based on tensile strength test). Final fractures were evaluated by scanning electron microscopy and EDS analysis. As expected higher cohesive strength showed metallic coatings with top results of coating Stellite 6. Carbide coatings showed approximately third of the cohesion strength in comparison with metal based coating.
Investigation of Microstructure and Mechanical Properties of Alumina-Titania Coatings by Flexicord Flame Spraying
Authors: Altincu E. , Ustel F.
Published: November 2022

Thermally sprayed Al2O3-TiO2 coatings were in the area of interest over the last decade because they showed improved wear properties over conventional coatings. In this study, flexicord flame spray gun was used to deposit Al2O3-TiO2 coatings at different spray parameters. The microstructural morphology variation and phase transformation of coatings were investigated. In addition, as one of the most important properties for ceramic coatings, hardness, solid particle abrasive wear resistance of coatings were measured before and after heat treated condition. Test results show that the higher mechanical properties and wear resistance by the heat treatment at elevated temperatures.
Evaluation of Low-Pressure Cold Spray MMC Coatings by Acoustic Emission-Coupled Four-Point Flexural Testing
Authors: Lee Y. T. R. , Shibly M. , Hussain T. , Fisher G. , McDonald A.
Published: November 2022

Low-pressure cold spray has been used as an innovative method to deposit metal matrix composite (MMC) coatings: boron carbide-nickel (B4C-Ni) and tungsten carbide-cobalt-nickel (WC-Co-Ni) composites. The coatings were studied using scanning electron microscopy, X-ray diffraction with Rietveld refinement, and acoustic emission-coupled four-point flexural test. Indentation fracture toughness tests were performed on the WC-Co-Ni coatings, only. The results showed that the composites had reinforcing particle volume fractions of 45.8 ± 0.3 vol.% and 22.7 ± 0.1 vol.% for the WC-Co-Ni and B4C-Ni MMC coatings, respectively. Flexural tests were used to evaluate the fracture strain of the composites. In these tests, the WC-Co-Ni composite failed by brittle facture at approximately 0.5% nominal strain. The B4C-Ni composite showed flexural behaviour similar to that of an unreinforced Ni matrix. These results suggest that there was insufficient B4C within the coating to affect significantly the ductile failure mode of Ni matrix. Post bending fracture analysis showed the presence of straight, continuous cracks on the WC-Co-Ni surface and the indentation fracture toughness of WC-Co-Ni was found to be 1.2 ± 0.2 MPa·m0.5. Discontinuous, random cracks were observed on the B4C-Ni surface. The quantification of these properties is essential in evaluating the performance of the low-pressure cold sprayings to determine their potential applications.
Numerical Analyzing the In-Flight Particle Temperature and Velocity in Plasma Spray
Authors: Ma W. , Huang R. , Huang J.
Published: November 2022

The in-flight particle temperature and velocity are very important factors that determine the deposition characteristics and coating qualities in plasma spray. Therefore, predicting the in-flight particle temperature and velocity with spray conditions is benefit to control the prepared coating qualities. In the present study, a steady-state 3D model was used to calculate the gas flow field of a plasma jet. The plasma gas temperature and velocity profiles applied to the plasma jet as the boundary conditions were obtained with our previous studies of plasma arc behaviors inside plasma torch. After obtained the gas temperature and velocity of the plasma jet, the in-flight particle trajectories, temperature, and velocity were investigated with numerical calculation method. Also the inflight particle temperature and velocity were verified by experimental measurements.
The Role of Interactive Teaching Methods in Shaping the Innovative Competence of Future Teachers of Primary Education Institutions
Authors: Opanasenko Nataliia , Chernenko Halyna
Published: November 2022

The article reveals the problematics of forming innovation competence of future primary school teachers in the study of professional subjects. The relevance of the chosen topic is indicated. The aim of the study, which consists in substantiating the role of interactive teaching methods in the formation of innovative competence of future teachers of primary education institutions, is substantiated. A number of theoretical and empirical methods of scientific research, in particular analysis, generalization and systematization, observation, was used in the course of the study to achieve the objectives. The results. It is stated that the requirements for compulsory learning outcomes are defined taking into account the competence-based approach to learning, which is based on key competences. One of the key competences is innovativeness. It implies openness to new ideas, initiation of changes in a close environment, formation of skills, attitudes, which are the basis of competence approach, provide further ability to learn successfully, carry out professional activities, feel themselves as a part of the community and participate in community affairs. It is established that an important role in the formation of innovative competence is played by interactive learning, which is a specific form of organization of cognitive activity, which provides creation of such learning conditions, in which each applicant feels its success, intellectual ability. The focus is on the content of interactive learning methods: design thinking, feedback, decision tree, mind maps, jury, case-method, etc. Examples of the implementation of these methods in the teaching of professional subjects «Didactics», «Theory and Methodology of Educational Work», «Methods of teaching an integrated course «I am exploring the world»» to 2nd and 3rd year students are presented. Topics of classes and methods of implementing interactive methods are indicated. Conclusions. According to the results of the research, the above-mentioned interactive learning methods open up tools for students, using which they will be able to start thinking innovatively and see their hidden possibilities. After all, using the methods described in the article is not only a time requirement, it is a sign of a knowledgeable person with a high degree of organization and thinking. The research results obtained during the experiment have allowed the authors of the article to assert that interactive teaching methods effectively influence the process of forming the innovative competence of future teachers of primary education institutions, because the students who participated in the experiment showed positive results. The authors argue that the formed innovative competence of future primary school teachers is necessary for pedagogical activities in the New Ukrainian School, because it is innovation as a key competence defined in the State Standard of Primary Education.
Amanat dalam Novel Si Anak Badai Karya Tere Liye
Authors: Hakim Man , Yuniati Ira , Maharani Hesti
Published: November 2022

This study aims to describe the message in the novel Si Anak Badai by Tere Liye. Data collection techniques using literature study techniques. The results of the study show that various messages are contained in the quote from the novel Si Anak Badai by Tere Liye. In the form of delivery of the mandate is divided into 2 ways, namely directly and indirectly. The most dominant form of delivery of the mandate is direct. In conclusion, there are 12 mandates in the novel Si Anak Badai by Tere Liye, namely, a) independent; b) mutual help; c) be responsible; d) filial piety to parents; e) forgive; f) loyal friends; g) the importance of education; h) be patient; i) honest; j) confident; k) brave; l) repay evil with good.

Keywords: Mandate, Novel, Si Anak Badai by Tere Liye Novel
Loneliness and Love
Authors: Kidd Abby Lauren
Published: November 2022

Science fiction films about artificial intelligence have often perpetuated anxieties about new technology as a widescale threat to humanity. However, more recently, the genre seems to be moving toward more positive and open-minded representations of technology that envision humans embarking on relationships with AI in varying capacities—perhaps a reflection of technology’s increasing value and permeation within all aspects of contemporary wider culture. Thus far, such texts have been given little scholarly attention, yet they offer significant insights into our possible coexistence with advancing technologies of the future. This article analyzes three contemporary science fiction films about artificial intelligence and demonstrates how they are offering unique perspectives that lend support to wider applications of AI, specifically as social companions.
A contabilidade ambiental na gestão das empresas
Authors: Carvalho Lorran Vinícius de Matos , Melo Sheiliany de Souza , Oliveira Alison Paulik Tavares , Roberto José Carlos Alves , Cavalcante Zuila Paulino
Published: November 2022

A contabilidade é uma ferramenta de apuração e controle que possui várias funções e pode ser aplicada em diferentes ramos. Entretanto, há uma área da contabilidade desconhecida para muitos contadores e empresários, que é a Contabilidade Ambiental. Ela tem como principal função analisar os resultados obtidos pelos ativos e passivos ambientais e, com base nessas análises, tomar as devidas decisões para não prejudicar o meio ambiente e manter a lucratividade da empresa. Nesse contexto, o presente artigo, tem como questão norteadora: quais os benefícios da contabilidade ambiental na gestão empresarial? Desta forma, o objetivo geral é demonstrar a aplicação da Contabilidade Ambiental nas empresas, destacando seus benefícios para a gestão empresarial. Para isso, adotou-se a metodologia de revisão bibliográfica. Por fim, conclui-se que a contabilidade ambiental é uma ferramenta de gestão muito útil para as empresas, porque através dela se obtém um resumo de todos os impactos positivos e negativos que ocorreram na empresa em determinado tempo. Através dela uma empresa pode monitorar seu desempenho econômico-financeiro e obter informações sobre os impactos causados no processo produtivo ao meio ambiente. Como benefício de sua utilização, destaca-se que esta é muito útil para causar uma boa imagem perante o mercado, já que uma grande parte dos consumidores, atualmente, estão atentos para aquelas empresas que cuidam ou prejudicam o meio ambiente.
Orçamento empresarial como ferramenta de controle para empresas de construção civil
Authors: Monteiro Marcelo Adriano Fernandes , Souza Emerson Silva de , Roberto José Carlos Alves , Cavalcante Zuila Paulino
Published: November 2022

O presente estudo tem como ideia central abordar a temática do orçamento empresarial, verificando a sua aplicabilidade nas empresas do segmento da construção civil. Nesse contexto, buscou-se responder a seguinte questão norteadora: por que é importante que as empresas de construção civil possuam um sistema de orçamento empresarial? Desta forma, o objetivo geral desta pesquisa é apontar por quais razões as empresas do ramo da construção civil devem adotar um sistema de controle orçamentário. Quanto à metodologia, adotou-se a pesquisa bibliográfica, utilizando os métodos de pesquisa básica, revisão bibliográfica e pesquisa descritiva. Como resultados, verificou-se que as organizações empresariais da construção civil demandam um sistema orçamentário adequado para controle das despesas operacionais e não operacionais. Por fim, concluiu-se que é importante a adoção de um sistema de orçamento em empresas de construção civil, pois este torna o funcionamento empresarial mais eficiente, determinando o que a entidade pode gastar de acordo com o que foi determinado pela previsão orçamentária. Desta forma, a tendência é que a empresa possa alcançar resultado financeiro igual ou melhor que o planejado, com menos custos e despesas.
Analisis Pengaruh Geometri Jalan Tambang Dari Front Penambangan ke Stockpile Terhadap Keselamatan Kerja PT Caritas Energi Indonesia Sarolangun Jambi
Authors: Fitriani Rika , Guskarnali Guskarnali , Andini Delita Ega
Published: November 2022

PT Caritas Energi Indonesia (CEI) is a company engaged in coal mining in Sarolangun Jambi. Based on the work accident data in the last 5 years of PT Caritas Energi Indonesia on the hauling coal getting road using dump truck transport Equipment Scania 380 P that resulted casualty and inflicted loss for the company both in terms of equipment repair and treatment of victims. The method on this research is to use quantitative data to calculate the width of straight road for sixty one segments, the width of bend road for fourteen segments, calculating the superelevation for fourteen segments, calculating hauling road slope (grade) for sixty one segments, calculating the cross slope for sixty one segments, analyzing the effect of road geometry on Occupational Health and Safety. The width of the straight road is 7 m for one line and 11 m for two lines, all segments were qualified, except Segment 0+400, Segment 0+700, Segment 1+600, thereforeit is necessary to increase the width of road to fit the standard, the width of the bend roadis 8 m for a single line and 13 m for two lines, all segments were qualified, exceptSegment 0+500, Segment 1+000 and Segment 4+100, superelevationbased on standard is 4%, not all of the superelevations were qualified so it needs to increase the width of the bend road so that it might avoid the centrifugal force while passing through the bend, all the grade of segmentswere qualified. PT Caritas Energi Indonesia didn’t have cross slope so the company needs to pay attention and make cross slope according to the standard of 40 mm/m. The geometry of the mining road of PT Caritas Energi Indonesia weren’t qualified, it might effectedwork accident so that it needs improvement accordance with standards
Perhitungan Cadangan Batupasir di Derah Perencanaan Tambang Desa Pegongsoran, Kecamatan Pemalang, Kabupaten Pemalang, Jawa Tengah
Authors: Santi Narulita , Hidajat Wahju K , Adillah Nur , Trisnawati Devina , Qadaryati Nurakhmi
Published: November 2022

Indonesia has large number of sandstone reserves throughout the region. One of the potential reserves of Sandstones located in Pegongsoran, Pemalang. The purpose of the study is to know subsurface rock distribution so amount of Sandstones reserves can be determined for mining. The method used is Schlumberger arrays configuration geoelectrical method. Geoelectric measurements carried out at four points, geological mapping also conducted to know geological conditions and surface geomorphology.. From data processing in the field lithology found in the field are volcanic breccia, sandstones, and tuff. To figure out the subsurface conditions and rock layer distribution is performed correlation with three sections A-A’ section consist of GL-04, GL-03, GL-01. The B-B’ section consist of GL-04, GL-02, GL-01 C-C’ section consisting of the geoelectrical points GL-03 and GL-02. Based on volumetric calculation result with model block method using Rockworks software sandstones volume is 2,030,000 m3 while Calculation results using Cross-section method is 1,788,845m3
Pemahaman KIPI melalui Penyuluhan tentang Manajemen KIPI pada Mahasiswa Universitas Advent Indonesia
Authors: Wulandari Imanuel Sri Mei , Sitompul Monalisa , Haro Masta , Malinti Evelin
Published: November 2022

ABSTRAK Covid-19 merupakan penyakit saluran pernafasana yang mudah menular melalui udara dan kontak langsung dengan penderita. Usaha yang dilakukan pemerintah untuk mengatasi Pandemik Covid-19, salah satunya dengan pemberian vaksin kepada penduduk Indonesia yang berusia 6 tahun ke atas. Bahkan saat ini telah dilaksanakan vaksin dosis 3 yang merupakan boster bagi masyarakat dengan usia lebih dari 18 tahun. Banyak laporan yang menyebutkan adanya masalah yang terjadi paska mendapatkan vaksin atau yang sering disebut dengan Kejadian Ikutan Paska Imunisasi (KIPI), hal ini membuat masyarakat cenderung ragu untuk mengikuti program pemerintah. Tujuan penyuluhan Kesehatan yang dilakukan untuk mengetahui pemahaman penanganan KIPI pada mahasiswa Universitas Advent Indonesia. Metode yang digunakan adalah ceramah dengan media power point dan leaflet yang dibagikan pada peserta penyuluhan. Hasil yang didapatkan melalui pos tes adalah pemahaman mahasiswa mengenaia penanganan KIPI 76% memiliki hasil pemahaman yang baik, dan 24% dengan pemahaman sedang. Hal ini menujukan penyuluhan yang diberikan efektif dengan tingkat pemahaman yang baik. Kata Kunci: Booster Vaksinasi, Covid-19, Kejadian Ikutan Paska Imunisasi. ABSTRACT Covid-19 is a respiratory disease that is easily transmitted through the air and direct contact with sufferers. Efforts made by the government to overcome the Covid-19 pandemic, one of which is by providing vaccines to Indonesian residents aged 6 years and over. Even now, dose 3 vaccine has been implemented which is a booster for people over 18 years of age. Many reports mention that there are problems that occur after getting the vaccine or what is often referred to as Post-Immunization Adverse Events (KIPI), this makes people tend to hesitate to participate in government programs. The purpose of health education is to find out the understanding of handling AEFI in Indonesian Adventist University students. The method used is a lecture using power point media and leaflets which are distributed to the counseling participants. The results obtained through the post-test were students' understanding of the handling of AEFI, 76% had good understanding, and 24% had moderate understanding. This shows that the counseling provided is effective with a good level of understanding. Keywords: Covid-19, Post-Immunization Follow-Up Events (AEFI), Vaccinations
Sosialisasi Dukungan Keluarga Penderita DM Bersama Kader Laskar Gertak Kita di Kebonsari Surabaya
Authors: Rusdianingseh Rusdianingseh , Maimunah Siti , Afiyah R. Khairiyatul , Damawiyah Siti , Khafid M. , Winarno Didik Dwi
Published: November 2022

ABSTRAK Diabetes merupakan penyakit kronik yang membutuhkan penatalaksanaan jangka panjang baik farmakologi maupun nonfarmakologi. Salah satu penatalaksanaan nonfarmakologi adalah dukungan keluarga yang sangat bermanfaat untuk membantu penderita menstabilkan kadar gula darah. Tujuan kegiatan pengabdian kepada masyarakat ini adalah untuk meningkatkan pengetahuan kader tentang pentingnya dukungan keluarga penderita DM. Metode yang digunakan dalam kegiatan pengabdian kepada masyarakat ini adalah pemberian pendidikan kesehatan terkait dukungan keluarga untuk penderita DM dan review ketrampilan kader kesehatan dalam memberikan pendidikan kesehatan kepada masyarakat. Media yang digunakan adalah lembar balik. Hasil kegiatan pengabdian kepada masyarakat ini adalah adanya peningkatan pengetahuan dan keterampilan kader sebesar 50%. Edukasi melalui media lembar balik merupakan salah satu cara untuk meningkatkan pengetahuan dan keterampilan kader dalam memberikan promosi kesehatan. Kata Kunci: Dukungan Keluarga, Kader, Lembar Balik  ABSTRACT Diabetes is a chronic disease that requires long-term management, both pharmacological and non-pharmacological. One of the non-pharmacological management is family support which is very useful to help patients stabilize blood sugar levels. The purpose of this community service activity is to increase the knowledge of cadres about the importance of family support for people with DM. The method used in this community service activity is the provision of health education related to family support for DM sufferers and reviewing the skills of health cadres in providing health education to the community. The media used is a flipchart. The result of this community service activity is an increase in the knowledge and skills of cadres by 50%. Education through flipchart media is one way to increase the knowledge and skills of cadres in providing health promotion. Keywords: Family Support, Cadres, Flipchart
Health Examination And Hypertension Gymnastics For Older Adults At Bina Bhakti Foundation Babakan Setu, Tangerang
Authors: Siswadi Yakobus , Panjaitan Masrida Adolina , T Marianna , S Bima A. , H Elissa O.
Published: November 2022

ABSTRACT Background: Older adults are those entering the age of 60.  Life expectancy among elderly has been a valuable indicator for the overall health of inhabitant. Older adults commonly experience a decline in health, due to aging or diseases. Several programs to increase the life expectancy of elderly population are hence of urgency. The direct survey revealed that there are 100 older adults in Bina Bhakti foundation, of which 66 people are able to walk and use wheelchairs, while 34 people are on complete bed rest. Furthermore, many of them had chronic diseases such as joint disease, hypertension, and heart disease. The Management of Bina Bhakti Foundation conducts periodic health examination once a month for those who are on total bed rest, and once a year for those who are still physically active. It is all carried out by nurses and general practitioners at the Bina Bhakti Foundation. Objective: This community service aims to provide hypertension education and gymnastics with the theme of “being healthy and independent elderly”. Method: The target is all elderly people being detected to have an increase in blood pressure. The program encompasses lecturing session, health screening, and hypertension gymnastics. Screening test of glucose, cholesterol, and blood pressure was conducted at the end of program. To ensure that each process went well, the team held discussion, practice and assistance to the elderly during gymnastics. Result: In a nutshell, all activities under this program went well. As many as 66 elderly people underwent health checks which included blood pressure, blood sugar, and cholesterol. It was found that among 66 respondents, 19 elderly had increased blood pressure,1 person had an increased in blood sugar and 13 people had a high cholesterol without high blood pressure from 66 respondents. Conclusion: The survey showed that many older adults in Bina Bhakti were diagnosed with hypertension, joint disease, heart disease, and diabetes mellitus. Respondents and nurses of the Bina Bhakti Foundation said that this educational activity and hypertension gymnastic were the first at Bina Bhakti Foundation. We expected that the program could be carried out with different topics about the effect of self-acupressure on reducing blood pressure. Keywords: Older adults, Hypertension education, Hypertension Gymnastics