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Articles de revues sur le sujet « Moving Metals Limited »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 12 février 2022

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1

Allen, J. W., M. S. Allen, D. C. Look, B. R. Wenner, N. Itagaki, K. Matsushima, and I. Surhariadi. "Infrared Plasmonics via ZnO." Journal of Nano Research 28 (June 2014): 109–19. http://dx.doi.org/10.4028/www.scientific.net/jnanor.28.109.

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Conventional plasmonic devices involve metals, but metal-based plasmonic resonances are mainly limited to λres < 1 μm, and thus metals interact effectively only with light in the UV and visible ranges. We show that highly doped ZnO can exhibit λres ≥ 1 μm, thus moving plasmonics into the IR range. We illustrate this capability with a set of thin (d = 25–147 nm) Al-doped ZnO (AZO) layers grown by RF sputtering on quartz glass. These samples employ a unique, 20-nm-thick, ZnON buffer layer, which minimizes the strong thickness dependence of mobility (μ) on thickness (d). A practical waveguide

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Mehmood, Ahmer, Muhammad Saleem Iqbal, and Irfan Mustafa. "Cooling of Moving Wavy Surface through MHD Nanofluid." Zeitschrift für Naturforschung A 71, no. 7 (July 1, 2016): 583–93. http://dx.doi.org/10.1515/zna-2016-0044.

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AbstractHeat transfer analysis has been carried out in the Magnetohydrodynamic (MHD) boundary layer formed near the wavy rough plate moving in x-direction. Due to the presence of metallic nanoparticle in the fluid and enhanced surface area of the plate as a consequence of surface texture, an increase in heat transfer rates is expected. However, the calculation of these enhanced rates of heat transfer is not straightforward because the convection phenomena become more complicated due to the motion of nanoparticle in the base fluid and also the waviness of the plate surface. The contribution of

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Adams, P. M., and G. Radhakrishnan. "Microstructure of Pulsed-Laser Deposited Titanium Carbide Thin Films Grown for Tribological Applications." Microscopy and Microanalysis 7, S2 (August 2001): 1238–39. http://dx.doi.org/10.1017/s1431927600032268.

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The carbides and nitrides of transition metals, are excellent candidates for hard coatings for tribological applications. Recently a novel pulsed laser deposition (PLD) technique has been developed for the room temperature growth of particulate free titanium carbide (TiC) coatings on bearing steels. On a completely different scale from ball bearing applications, moving microelectricalmechanical systems (MEMS) face issues of limited lifetime as a result of rapid wear of the silicon components. The integration of hard tribological coatings into moving MEMS structures should greatly increase the

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Zięba, P. "Recent Developments on Discontinuous Precipitation." Archives of Metallurgy and Materials 62, no. 2 (June 1, 2017): 955–68. http://dx.doi.org/10.1515/amm-2017-0138.

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AbstractThe discontinuous precipitation (DP) belongs to a group of diffusive solid state phase transformations during which the formation of a new phase is heterogeneous and limited to a migrating reaction front (RF). The use of analytical electron microscopy provided reliable information that there is no differences in the diffusion rate at the stationary grain boundary and moving RF of DP reaction. On the other hand, the use of “in situ” transmission electron microscopy observations indicated the importance of stop-go motion or oscillatory movement of the RF.During 2004-2016 period more or l

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Bernt, Marvin, and Adam McClure. "Consumable Anode Process for SnAg Electroplating." International Symposium on Microelectronics 2014, no. 1 (October 1, 2014): 000117–21. http://dx.doi.org/10.4071/isom-ta44.

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Near eutectic tin-silver (SnAg) is currently the alloy of choice for electroplated lead-free solder bumping and Cu pillar capping. While lead-tin (PbSn) is still used in some applications, there has been considerable momentum in moving away from the use of lead in semiconductor packaging. Both solders are normally electroplated as alloys with specific compositions to target a desired melting point. Since the deposition potentials of lead and tin are very close together, they plate with similar characteristics. This makes it possible for PbSn plating systems to use a consumable anode system whe

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Adams, M. J., G. J. Ewen, and C. A. Shand. "Acquisition and analysis of GFAAS data." Journal of Automatic Chemistry 10, no. 3 (1988): 130–34. http://dx.doi.org/10.1155/s1463924688000240.

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Since its inception as an analytical technique some 30 years ago atomic absorption spectrometry has become a firmly established method for the analysis of trace metals. Graphite furnace atomic absorption spectrometry provides the analyst with the capability of analysis of solutions containing μg l-1levels of the analyte, but, because of the transient nature of the signals, a sophisticated approach to the data aquisition and handling of data is required. Most modern commercial graphite furnace atomic absorption spectrometers have built in microprocessors for this purpose but they often have lim

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Safdar, S., L. Li, M. A. Sheikh, and M. J. Schmidt. "Thermal history analysis of surface heating of mild steel with different laser beam geometries." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 220, no. 10 (October 1, 2006): 1549–57. http://dx.doi.org/10.1243/09544062jmes246.

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Lasers are in use in the material processing industry for well over 30 years now. The way in which the temperature is distributed inside the material is of prime importance in laser material processing, as it directly affects the heating/cooling rates and thermal gradients. Optimization of different laser processes requires control over heating/cooling rate and thermal gradient. Different processes have different requirements of heating/cooling rate and thermal gradient. Knowing these parameters and relevant metallurgical information, one can predict the microstructure and hence control the ma

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Harkness, Robert. "The Optical Radiation of Supernovae." International Astronomical Union Colloquium 89 (1986): 167–81. http://dx.doi.org/10.1017/s0252921100086073.

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Most of our knowledge of supernovae comes from studies of their optical radiation. Very high quality optical spectra have been available for several years now. The new data have aided the development of theoretical models of supernova explosions, particularly Type I events, which until recently, were very poorly understood. Type II explosions, which are believed to arise from core collapse in massive stars (Woosley, this volume;, produce optical spectra which can be simply interpreted in terms of a nearly blackbody continuum with prominent lines of hydrogen superimposed. The Type II atmosphere

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Meier, Horst, V. Smukala, O. Dewald, and Jian Zhang. "Two Point Incremental Forming with Two Moving Forming Tools." Key Engineering Materials 344 (July 2007): 599–605. http://dx.doi.org/10.4028/www.scientific.net/kem.344.599.

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This paper describes a new development of an incremental, robot based sheet metal forming process for the production of sheet metal components for limited-lot productions and prototypes. The kinematic based generation of the shape is implemented by means of two industrial robots, which are interconnected to a cooperating robot system. Compared to other incremental sheet metal forming machines this system offers a high geometrical form flexibility without the need of any workpiece dependent tools. The principle of the procedure is based on flexible shaping by means of a freely programmable path

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Meier, Horst, and Christian Magnus. "Incremental Sheet Metal Forming with Direct Resistance Heating Using Two Moving Tools." Key Engineering Materials 554-557 (June 2013): 1362–67. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.1362.

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This paper describes new developments in an incremental, robot-based sheet metal forming process (‘Roboforming’) for the production of sheet metal components in small batch sizes. The dieless kinematic-based generation of a shape is implemented by means of two industrial robots which are interconnected to a cooperating robot system. Compared to other incremental sheet metal forming machines, this system offers high geometrical form flexibility without the need of any part-dependent tools. The industrial application of incremental sheet metal forming is still limited by certain constraints, e.g

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Liu, Chin-Wei, Chian-Huei Chen, and Shyong Lee. "Simulation and analysis of through-mask electrochemical machining with moving tools." Advances in Mechanical Engineering 13, no. 4 (April 2021): 168781402110099. http://dx.doi.org/10.1177/16878140211009996.

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At present, the development of through-mask micro-electrochemical machining is only limited to static machining, where the size of the tool is usually the same as that of the workpiece. However, in the electrochemical processing, metal with good electrical conductivity is chosen as the tool electrode, and it is usually very expensive. Based on the cost consideration, a moving tool with small size may be preferred. Finite element method is used in this paper to create the electric field model of through-mask micro-electrochemical machining with moving tool. The effects of the parameters, such a

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Periyasamy, Karlmarx G. K., Vixen Joshua Tan, Siyuan He, and Nikolaos Kourtzanidis. "External Electromagnet FPCB Micromirror for Large Angle Laser Scanning." Micromachines 10, no. 10 (September 30, 2019): 667. http://dx.doi.org/10.3390/mi10100667.

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An external electromagnet plus moving PM (permanent magnet) FPCB (flexible printed circuit board) micromirror is proposed in this paper that can overcome two limitations associated with the previous FPCB micromirror with a configuration of an external PM plus moving coil, i.e., (1) it reduces the overall width beyond the mirror plate, and (2) increases the maximum rotation angle. The micromirror has two external electromagnets underneath an FPCB structure (two torsion beams and a middle seat) with two moving PM discs attached to the back and a metal-coated mirror plate bonded to the front of t

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Wang, Shaoxi, and Xuan Yuan. "The Designing of Magnetic-Driven Micromirror for Portable FTIRs." Journal of Sensors 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/1460582.

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Fourier transform infrared spectroscopy is a widely used instrument to analyze and test different materials including organic and inorganic. Most of current commercial Fourier transform infrared spectrometers are limited in miniaturization and scanning velocity by their macroscopic components. MEMS FTIR spectroscopy is one of the important applications of translational actuator-driven systems by using MEMS technology. The critical component in MEMS FTIRs is the large displacement translating micromirror and its actuator. The paper presents a large displacement and high-surface quality micromir

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Goodwin, Matthew L., William Ryan Spiker, Darrel S. Brodke, and Brandon D. Lawrence. "Failure of facet replacement system with metal-on-metal bearing surface and subsequent discovery of cobalt allergy: report of 2 cases." Journal of Neurosurgery: Spine 29, no. 1 (July 2018): 81–84. http://dx.doi.org/10.3171/2017.10.spine17862.

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The aim of this study was to report on 2 patients in whom metal-on-metal (MOM) facet replacements failed, with subsequent positive findings on allergy testing. Motion-preserving devices have been used with limited success when instrumentation is indicated in the mobile spine. MOM-bearing surfaces in orthopedics were developed to increase implant longevity, yet have been associated with numerous adverse outcomes, including local tissue reactions, pseudotumors, metallosis, and the need for revision surgery. Five patients with spinal stenosis and low-grade spondylolisthesis were randomized to und

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Sitnova, Tatyana, Lyudmila Mashonkina, and Yury Pakhomov. "Confronting the Gaia and NLTE spectroscopic parallaxes for the FGK stars." Proceedings of the International Astronomical Union 12, S330 (April 2017): 327–28. http://dx.doi.org/10.1017/s1743921317005683.

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AbstractThe understanding of the chemical evolution of the Galaxy relies on the stellar chemical composition. Accurate atmospheric parameters is a prerequisite of determination of accurate chemical abundances. For late type stars with known distance, surface gravity (log g) can be calculated from well-known relation between stellar mass, Teff, and absolute bolometric magnitude. This method weakly depends on model atmospheres, and provides reliable log g. However, accurate distances are available for limited number of stars. Another way to determine log g for cool stars is based on ionisation e

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Ning, Jinqiang, Daniel E. Sievers, Hamid Garmestani, and Steven Y. Liang. "Analytical Thermal Modeling of Metal Additive Manufacturing by Heat Sink Solution." Materials 12, no. 16 (August 12, 2019): 2568. http://dx.doi.org/10.3390/ma12162568.

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Metal additive manufacturing can produce geometrically complex parts with effective cost. The high thermal gradients due to the repeatedly rapid heat and solidification cause defects in the produced parts, such as cracks, porosity, undesired residual stress, and part distortion. Different techniques were employed for temperature investigation. Experimental measurement and finite element method-based numerical models are limited by the restricted accessibility and expensive computational cost, respectively. The available physics-based analytical model has promising short computational efficienc

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Powell, N. N., and C. Andrew. "Incremental Forming of Flanged Sheet Metal Components Without Dedicated Dies." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 206, no. 1 (February 1992): 41–47. http://dx.doi.org/10.1243/pime_proc_1992_206_054_02.

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This paper describes research that has investigated a process for forming flanged sheet metal parts without dedicated tooling by repeated localized deformation—an incremental process. The complete formation of a shrink flange over a former by a grooved roller, moving around the flange in a series of passes, is analysed by the finite element method and reasonable agreement with experimental results shown. Some evidence is presented that the use of a grooved roller can extend the forming limits of a conventional single die pressing operation. The predicted reaction distribution at the fixed edge

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Chen, Siying, Yuanyuan Chen, Yinchao Zhang, Pan Guo, He Chen, and Huiyun Wu. "The 3D Modeling System for Bioaerosol Distribution Based on Planar Laser-Induced Fluorescence." Sensors 21, no. 8 (April 8, 2021): 2607. http://dx.doi.org/10.3390/s21082607.

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Although it is quite challenging to image and analyze the spatial distribution of bioaerosols in a confined space, a three-dimensional (3D) modeling system based on the planar laser-induced fluorescence (PLIF) technique is proposed in this paper, which is designed to analyze the temporal and spatial variations of bioaerosol particles in a confined chamber. The system employs a continuous planar laser source to excite the fluoresce, and a scientific complementary metal oxide semiconductor (sCMOS) camera to capture images of 2048 × 2048 pixels at a frame rate of 12 Hz. While a sliding platform i

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Liu, Pengpeng, Yawen Guo, Yihong Wu, Junyan Chen, and Yabin Yang. "A Low-Cost Electrochemical Metal 3D Printer Based on a Microfluidic System for Printing Mesoscale Objects." Crystals 10, no. 4 (March 28, 2020): 257. http://dx.doi.org/10.3390/cryst10040257.

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For the additive manufacturing (AM) of metal objects, the powder-based fusion (PBF) method is routinely utilized to fabricate macroscale parts. On the other hand, electrochemical additive manufacturing (ECAM), in which metallic structures are deposited through the electrochemical reduction of metal ions, is a promising technique for producing micro- and nanoscale objects. However, a gap exists in terms of fabricating mesoscale objects within the current AM techniques. The PBF method is limited by fabrication precision due to pronounced residual stresses, and most current ECAM systems are diffi

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Karuppasamy, K., K. Prasanna, Vasanth Rajendiran Jothi, Dhanasekaran Vikraman, Sajjad Hussain, Jung-Hoon Hwang, and Hyun-Seok Kim. "Recent Advances in Nanostructured Transition Metal Carbide- and Nitride-Based Cathode Electrocatalysts for Li–O2 Batteries (LOBs): A Brief Review." Nanomaterials 10, no. 11 (October 23, 2020): 2106. http://dx.doi.org/10.3390/nano10112106.

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A large volume of research on lithium–oxygen (Li–O2) batteries (LOBs) has been conducted in the recent decades, inspired by their high energy density and power density. However, these future generation energy-storage devices are still subject to technical limitations, including a squat round-trip efficiency and a deprived rate-capability, due to the slow-moving electrochemical kinetics of both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) over the surface of the cathode catalyst. Because the electrochemistry of LOBs is rather complex, only a limited range of cathode c

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Sharifi, Pouya, Kumar Sadayappan, and Jeffrey T. Wood. "The Effects of Interfacial Heat Transfer Coefficient on the Microstructure of High-Pressure Die-Cast Magnesium Alloy AM60B." Materials Science Forum 879 (November 2016): 1755–59. http://dx.doi.org/10.4028/www.scientific.net/msf.879.1755.

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This paper describes the details of a quantitative experimental and numerical study on the influence of solidification conditions, including the apparent interfacial heat transfer coefficient (IHTC) between the die and solidifying metal, on the resulting local microstructure. Multiple runs of the commercial casting simulation package, ProCASTTM, are used to model the mold filling and solidification events employing a range of IHTC values. The simulation results are used to estimate the centreline cooling curve at various locations through the casting. The centreline cooling curve, together wit

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So, Hideya, Kouhei Suzaki, and Daisuke Goto. "Undesired Radiation Suppression Technique with Adaptive Control for Distributed Array Antenna Systems in Mobile Environment." Journal of communications software and systems 16, no. 2 (May 11, 2020): 163–69. http://dx.doi.org/10.24138/jcomss.v16i2.1044.

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We have proposed a distributed array antenna (DAA) system for high-speed satellite communications. The DAA system uses multiple small tracking antennas and combines the transmission signals in-phase to increase the antenna gain. DAA system has a problem that the undesired radiation at the sidelobe direction increases as the antenna gain at the main lobe direction increases. In the mobile environment, the conventional technique can suppress the undesired radiation in the limited condition because of changing the direction of the undesired radiation according to the movement of the mobile statio

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Ning, Jinqiang, Daniel Sievers, Hamid Garmestani, and Steven Liang. "Analytical Modeling of In-Process Temperature in Powder Bed Additive Manufacturing Considering Laser Power Absorption, Latent Heat, Scanning Strategy, and Powder Packing." Materials 12, no. 5 (March 8, 2019): 808. http://dx.doi.org/10.3390/ma12050808.

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Temperature distribution gradient in metal powder bed additive manufacturing (MPBAM) directly controls the mechanical properties and dimensional accuracy of the build part. Experimental approach and numerical modeling approach for temperature in MPBAM are limited by the restricted accessibility and high computational cost, respectively. Analytical models were reported with high computational efficiency, but the developed models employed a moving coordinate and semi-infinite medium assumption, which neglected the part dimensions, and thus reduced their usefulness in real applications. This pape

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Crescenzi, Rocco, Giuseppe Vincenzo Castellito, Simone Quaranta, and Marco Balucani. "Design of a Tri-Axial Surface Micromachined MEMS Vibrating Gyroscope." Sensors 20, no. 10 (May 15, 2020): 2822. http://dx.doi.org/10.3390/s20102822.

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Gyroscopes are one of the next killer applications for the MEMS (Micro-Electro-Mechanical-Systems) sensors industry. Many mature applications have already been developed and produced in limited volumes for the automotive, consumer, industrial, medical, and military markets. Plenty of high-volume applications, over 100 million per year, have been calling for low-cost gyroscopes. Bulk silicon is a promising candidate for low-cost gyroscopes due to its large scale availability and maturity of its manufacturing industry. Nevertheless, it is not suitable for a real monolithic IC integration and req

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Vardhan, Harsh, Pankaj Sinha, and Madhu Vij. "Behavior of Indian sectoral stock price indices in the post subprime crisis period." Journal of Advances in Management Research 12, no. 1 (May 5, 2015): 15–29. http://dx.doi.org/10.1108/jamr-10-2014-0061.

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Purpose – The purpose of this paper is to demonstrate importance of usage of sector indices which provides insight for sector specific investment strategies and direction for suitable policy formulation for the Indian industry. It investigates long run, short run and causality relationships between eight identified sector indices and Sensex for the post subprime period. Design/methodology/approach – The study uses Vector Error Correction Model (VECM) for econometric analysis. It employs Generalized Impulse Response and Variance Decomposition analysis for developed multivariate framework in ord

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Yu, Cheng Hsien, and Jinn Jong Sheu. "Preform and Die Designs for Hot Forging Process of Linear Slide Block." Applied Mechanics and Materials 419 (October 2013): 395–400. http://dx.doi.org/10.4028/www.scientific.net/amm.419.395.

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In this study, the preform and die designs of hot forging process were proposed for a long-flat slide block. This block is assembled to the linear slide for carrying the moving table. Three different billet geometry designs were proposed to obtain good die filling. The volume of the flash is limited to 30% with a flash thickness design in 3 mm. The forging die was designed with four ejectors to push up the forged part smoothly. The proposed billet geometries and die design were evaluated using CAE simulation. The simulation results indicated that the suitable perform design is able to achieve

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Kanický, Viktor, Jan Musil, Marcel Benda, and Jean-Michel Mermet. "Study of UV Laser Ablation of Nitrided Steels Using Inductively Coupled Plasma Atomic Emission Spectrometry." Collection of Czechoslovak Chemical Communications 61, no. 8 (1996): 1167–76. http://dx.doi.org/10.1135/cccc19961167.

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A depth profile study of nitrided steels containing Ti or V sputtered in the surface layer was performed by means of laser ablation inductively coupled plasma atomic emission spectrometry. An Nd:YAG laser was used in the Q-switched mode and operated at 355 and 266 nm. The laser ablation patterns were obtained on the material surface by moving the ablation cell relative to the laser beam by means of an XY-translator. Depth resolution was obtained by using successive limited numbers of ablation cycles. The corresponding transient signals of Ti or V and Fe were measured simultaneously with a dual

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Echelmeyer, K., and B. Kamb. "Measurement of Short Period Motion On A Fast Moving Glacier and Analysis of Data (Abstract)." Annals of Glaciology 8 (1986): 204. http://dx.doi.org/10.1017/s0260305500001555.

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The investigation of glacier motion over short time periods for relatively long duration and over large longitudinal extent can yield valuable insight into the dynamics of glacier surging, basal sliding, ice stream development, and calving mechanisms. In this paper, we discuss techniques for monitoring short term horizontal and vertical motion employed on the often highly-fractured surface of Variegated Glacier, Alaska, prior to its recent surge (1980—84) and on the fast-moving outlet glacier — ice stream system of Jakobshavns Glacier, Greenland. The short period measurements described here we

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Echelmeyer, K., and B. Kamb. "Measurement of Short Period Motion On A Fast Moving Glacier and Analysis of Data (Abstract)." Annals of Glaciology 8 (1986): 204. http://dx.doi.org/10.3189/s0260305500001555.

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The investigation of glacier motion over short time periods for relatively long duration and over large longitudinal extent can yield valuable insight into the dynamics of glacier surging, basal sliding, ice stream development, and calving mechanisms. In this paper, we discuss techniques for monitoring short term horizontal and vertical motion employed on the often highly-fractured surface of Variegated Glacier, Alaska, prior to its recent surge (1980—84) and on the fast-moving outlet glacier — ice stream system of Jakobshavns Glacier, Greenland. The short period measurements described here we

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Nagaso, Masaru, Joseph Moysan, Christian Lhuillier, and Jean-Philippe Jeannot. "Simulation of Fluid Dynamics Monitoring Using Ultrasonic Measurements." Applied Sciences 11, no. 15 (July 30, 2021): 7065. http://dx.doi.org/10.3390/app11157065.

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The simulation of the propagation of ultrasonic waves in a moving fluid will improve the efficiency of the ultrasonic flow monitoring and that of the in-service monitoring for various reactors in several industries. The most recent simulations are mostly limited to 3D representations of the insonified volume but without really considering the temporal aspect of the flow. The advent of high-performance computing (HPC) now makes it possible to propose the first 4D simulations, with the representation of the inspected medium evolving over time. This work is based on a highly accurate double simul

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Muhamadali, Howbeer, Yun Xu, David I. Ellis, J. William Allwood, Nicholas J. W. Rattray, Elon Correa, Haitham Alrabiah, Jonathan R. Lloyd, and Royston Goodacre. "Metabolic Profiling of Geobacter sulfurreducens during Industrial Bioprocess Scale-Up." Applied and Environmental Microbiology 81, no. 10 (March 6, 2015): 3288–98. http://dx.doi.org/10.1128/aem.00294-15.

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ABSTRACTDuring the industrial scale-up of bioprocesses it is important to establish that the biological system has not changed significantly when moving from small laboratory-scale shake flasks or culturing bottles to an industrially relevant production level. Therefore, during upscaling of biomass production for a range of metal transformations, including the production of biogenic magnetite nanoparticles byGeobacter sulfurreducens, from 100-ml bench-scale to 5-liter fermentors, we applied Fourier transform infrared (FTIR) spectroscopy as a metabolic fingerprinting approach followed by the an

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Visser Taklo, Maaike M., Branson Belle, Joachim Seland Graff, Astrid-Sofie Vardøy, and Elisabeth Ramsdal. "Comparison of hermetic sealing using SAC and SnPb solder for a MEMS pressure sensor." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2016, DPC (January 1, 2016): 000464–87. http://dx.doi.org/10.4071/2016dpc-ta32.

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In order to minimize the influence of packaging stress on the signal of MEMS pressure sensors, the pressure inlet can be reduced in footprint and mechanically decoupled from the mechanically moving parts. Moreover, the formation of a hermetic seal between the sensor inlet and an external inlet becomes more challenging as the footprint is reduced. Soldering is a preferred solution as a hermetic seal is achievable despite some surface roughness at the surfaces to be joined. However, the metallization on the MEMS, the solder and the metallization on the external inlet must be carefully matched to

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Kamble, Sheetal Jaisingh, Anju Singh, and Manoj Govind Kharat. "Life cycle analysis and sustainability assessment of advanced wastewater treatment technologies." World Journal of Science, Technology and Sustainable Development 15, no. 2 (April 3, 2018): 169–85. http://dx.doi.org/10.1108/wjstsd-05-2016-0034.

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Purpose Wastewater treatment plants (WWTPs) have long-time environmental impacts. The purpose of this paper is to assess the environmental footprint of two advanced wastewater treatment (WWT) technologies in a life cycle and sustainability perspective and identify the improvement alternatives. Design/methodology/approach In this study life cycle-based environmental assessment of two advanced WWT technologies (moving bed biofilm reactor (MBBR) and sequencing batch reactor (SBR)) has been carried out to compare different technological options. Life cycle impacts were computed using GaBi software

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"Monitoring of the Migratory Ability of Heavy Metals in the Soil-Plant System." Biointerface Research in Applied Chemistry 11, no. 3 (October 25, 2020): 10351–57. http://dx.doi.org/10.33263/briac113.1035110357.

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The profile migration of pollutants that occurs most intensively in spring, autumn, and summer with a large amount of precipitation when intensive descending flows of soil moisture take place is of particular importance. The migration of heavy metals is limited by their deposition on geochemical barriers. The study of the profile migration and accumulation of heavy metals showed that metals have an unequal behavior in soils; a change in their content in the profile is noted. The article presents the dynamics of the distribution of moving forms of heavy metals in different soils of the Orenburg

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Hamidullah, Syed, M. Sultan Khan, and M. Tahir Shah. "Heavy metal pollution in the western part of Peshawar metropolis, north Pakistan." Journal of Nepal Geological Society 18 (December 1, 1998). http://dx.doi.org/10.3126/jngs.v18i0.32272.

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Peshawar is the capital of North-West-Frontier-Province (NWFP) and the largest trade centre in the northwestern part of Pakistan. Due to high rate of urbanisation and the sudden influxes of Afghan refugees in the past two decades, the city has become one of the most polluted ones in the South Central Asia. The increased load of transportation with no or limited expansion of roads, unplanned and uncontrolled industrialisation and poor sanitation have caused the atmosphere unprecedently overburdened with smokes and dusts of all kinds. This paper is a part of a detail study carried out to determi

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Barrioz, Vincent, Dan A. Lamb, Eurig W. Jones, and Stuart Irvine. "Suitability of Atmospheric-pressure MOCVD CdTe Solar Cells for Inline Production Scale." MRS Proceedings 1165 (2009). http://dx.doi.org/10.1557/proc-1165-m07-03.

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AbstractCdTe, with a direct band gap of 1.45 eV is well suited to the terrestrial AM1.5 solar irradiance and currently makes up half of the thin film (TF) photovoltaic (PV) market. There are 4 main factors that determine final cost of PV modules: the conversion efficiency, materials amount per unit area of module, production yield, and the economy of scale. It is therefore valuable to investigate alternative and/or innovative deposition techniques and processes which have the potential to impact on these factors. Metal organic chemical vapour deposition (MOCVD) is a powerful technique offering

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Heremans, Joseph P. "Magnetic Field Sensors for Magnetic Position Sensing in Automotive Applications." MRS Proceedings 475 (1997). http://dx.doi.org/10.1557/proc-475-63.

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ABSTRACTMagnetic position sensors are transducers whose output is an electrical signal that is a function of a mechanical motion. They consist of a permanent magnet, a magnetic field sensor, and a moving magnetic circuit. Being contactless, they do not wear out. Unlike optical systems, they are impervious to contamination. With the proliferation of microprocessor control in many on-board automotive applications, magnetic position sensing becomes a crucial function, found e.g. in cam and crankshaft sensors used for ignition timing and engine misfire detection, in brushless electrical motors, in

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Choudhury, D., R. Walker, P. Ingle, K. Cheah, and J. Dowell. "Friction Reduction in Metal on Metal Hip Joint." Journal of Medical Devices 3, no. 2 (June 1, 2009). http://dx.doi.org/10.1115/1.3135148.

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In the world, approximately 800,000 total hip replacements are implanted, while, at least 50,000 hip replacements are performed in the United Kingdom each year. Orthopaedic surgeons have traditionally delayed joint replacement surgery in patients younger than 60 due to its limited survivorship time and biological effect inside the human body. The highest percentage (71%) hip joint failure was caused by aseptic loosening of the femoral and acetabular components and the war rate and debris are the accepted causes of that aseptic loosening. The wear particles, either ion or stable form, can react

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Hoad, Catherine, and Samuel Whiting. "True Kvlt? The Cultural Capital of “Nordicness” in Extreme Metal." M/C Journal 20, no. 6 (December 31, 2017). http://dx.doi.org/10.5204/mcj.1319.

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IntroductionThe “North” is given explicitly “Nordic” value in extreme metal, as a vehicle for narratives of identity, nationalism and ideology. However, we also contend that “Nordicness” is articulated in diverse and contradictory ways in extreme metal contexts. We examine Nordicness in three key iterations: firstly, Nordicness as a brand tied to extremity and “authenticity”; secondly, Nordicness as an expression of exclusory ethnic belonging and ancestry; and thirdly, Nordicness as an imagined community of liberal democracy.In situating Nordicness across these iterations, we call into focus h

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Brockington, Roy, and Nela Cicmil. "Brutalist Architecture: An Autoethnographic Examination of Structure and Corporeality." M/C Journal 19, no. 1 (April 6, 2016). http://dx.doi.org/10.5204/mcj.1060.

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Introduction: Brutal?The word “brutal” has associations with cruelty, inhumanity, and aggression. Within the field of architecture, however, the term “Brutalism” refers to a post-World War II Modernist style, deriving from the French phrase betón brut, which means raw concrete (Clement 18). Core traits of Brutalism include functionalist design, daring geometry, overbearing scale, and the blatant exposure of structural materials, chiefly concrete and steel (Meades 1).The emergence of Brutalism coincided with chronic housing shortages in European countries ravaged by World War II (Power 5) and g

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Richardson, Nicholas. "Wandering a Metro: Actor-Network Theory Research and Rapid Rail Infrastructure Communication." M/C Journal 22, no. 4 (August 14, 2019). http://dx.doi.org/10.5204/mcj.1560.

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IntroductionI have been studying the creation of Metro style train travel in Sydney for over a decade. My focus has been on the impact that media has had on the process (see Richardson, “Curatorial”; “Upheaval”; “Making”). Through extensive expert, public, and media research, I have investigated the coalitions and alliances that have formed (and disintegrated) between political, bureaucratic, news media, and public actors and the influences at work within these actor-networks. As part of this project, I visited an underground Métro turning fifty in Montreal, Canada. After many years studying t

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White, Jessica. "Body Language." M/C Journal 13, no. 3 (June 30, 2010). http://dx.doi.org/10.5204/mcj.256.

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Jessica craned her head to take in the imposing, stone building, then lowered her gaze to the gold-plated sign at the base of the steps. “Institute of Methodology”, it read. Inside the heavy iron doors, a woman sat at a desk, her face devoid of expression. “Subject area?” asked the woman. “Uhmm, feminism ... and fiction, I think.” “Turn right.” “Do you have a map?” “No.” “How am I meant to find things?” “Each has their own method; it’s not up to us to prescribe that.” Jessica sighed, readjusted her handbag and turned right. A corridor stretched out before her. She set off, her stiletto boots e

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Alberto, Maria. "The Prosthetic Impulse Revisited in A.I. Artificial Intelligence." M/C Journal 22, no. 5 (October 9, 2019). http://dx.doi.org/10.5204/mcj.1591.

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As a genre, science fiction deals with possible futures, imagining places and technologies that typically do not exist in audiences’ own lives. Science fiction film takes this directive a step further by creating visual representations of these futures and possibilities, presenting audiences with imagined ideas of what new technologies or unfamiliar places might look like. Thus, although any science fiction text can describe sociocultural and technological futures, science fiction film goes a step further by providing images that viewers do not have to envision for themselves. This difference

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Moore, Christopher Luke. "Digital Games Distribution: The Presence of the Past and the Future of Obsolescence." M/C Journal 12, no. 3 (July 15, 2009). http://dx.doi.org/10.5204/mcj.166.

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A common criticism of the rhythm video games genre — including series like Guitar Hero and Rock Band, is that playing musical simulation games is a waste of time when you could be playing an actual guitar and learning a real skill. A more serious criticism of games cultures draws attention to the degree of e-waste they produce. E-waste or electronic waste includes mobiles phones, computers, televisions and other electronic devices, containing toxic chemicals and metals whose landfill, recycling and salvaging all produce distinct environmental and social problems. The e-waste produced by games

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