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Journal articles on the topic 'High Angle TPC'

Author: Grafiati

Published: 14 December 2024

Last updated: 31 July 2025

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1

White, J. W. "Flying Characteristics of the Transverse and Negative Pressure Contour (“TNP”) Slider Air Bearing." Journal of Tribology 119, no. 2 (1997): 241–48. http://dx.doi.org/10.1115/1.2833166.

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The TNP contour air bearing slider is composed of oversized transverse pressure contour (TPC) outer rails and a central negative pressure (NP) cavity. The NP cavity is separated from the TPC rails by an ambient pressure reservoir which serves two functions. First, it prevents direct hydrodynamic interaction between the various component air bearing surfaces and thus, eliminates pressure distortion and dilution, common causes of problems related to flying height and roll angle control. Second, the ambient reservoir allows the TPC rails and NP cavity to be configured and dimensioned independentl

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2

Kodagoda, Gethmini, Hung T. Hong, Tim J. O’Hare, Yasmina Sultanbawa, Bruce Topp, and Michael E. Netzel. "Effect of Storage on the Nutritional Quality of Queen Garnet Plum." Foods 10, no. 2 (2021): 352. http://dx.doi.org/10.3390/foods10020352.

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Due to high perishability, plums are harvested at an early stage of maturity to extend postharvest storage life. Storage time and temperature can significantly affect the phytochemical and sugar composition of plums, altering their palatability and nutritional quality. In this study, variations in physiochemical properties (total soluble solids (TSS), titratable acidity (TA), color (chroma and hue angle)), phytochemical composition (total phenolic content (TPC), total anthocyanin content (TAC), and carotenoids), and sugars in three different tissues of the Queen Garnet plum (QGP) during storag

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3

D'Ago, D., G. Collazuol, M. Feltre, et al. "Preliminary measurement of ion drift velocity in T2K gas mixture." Journal of Instrumentation 20, no. 04 (2025): C04006. https://doi.org/10.1088/1748-0221/20/04/c04006.

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Abstract In recent years, the near detector of the T2K experiment underwent an important upgrade of part of its equipment, which involved the construction of a set of new detectors. As a part of the upgrade, two gaseous Time Projection Chambers (TPC), placed above and below the active target, enable the study of particles produced at large angles with respect to the beam axis by neutrino interactions. Each High Angle TPC includes a large active volume defined by rectangular cross-section field cages with lightweight composite material walls and two readout planes instrumented with eight Encaps

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4

Jones, S. B., T. S. Nonnenmacher, E. Atkin, et al. "Off-Axis Characterisation of the CERN T10 Beam for low Momentum Proton Measurements with a High Pressure Gas Time Projection Chamber." Instruments 4, no. 3 (2020): 21. http://dx.doi.org/10.3390/instruments4030021.

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We present studies of proton fluxes in the T10 beamline at CERN. A prototype high pressure gas time projection chamber (TPC) was exposed to the beam of protons and other particles, using the 0.8 GeV/c momentum setting in T10, in order to make cross section measurements of low energy protons in argon. To explore the energy region comparable to hadrons produced by GeV-scale neutrino interactions at oscillation experiments, i.e., near 0.1 GeV of kinetic energy, methods of moderating the T10 beam were employed: the dual technique of moderating the beam with acrylic blocks and measuring scattered p

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5

Liu, Mengnan, Yu Han, Xiaoqi Xi, et al. "Drift Artifacts Correction for Laboratory Cone-Beam Nanoscale X-ray Computed Tomography by Fitting the Partial Trajectory of Projection Centroid." Photonics 9, no. 6 (2022): 405. http://dx.doi.org/10.3390/photonics9060405.

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A self-correction method for the drift artifacts of laboratory cone-beam nanoscale X-ray computed tomography (nano-CT) based on the trajectory of projection centroid (TPC) is proposed. This method does not require additional correction phantoms, simplifying the correction process. The whole TPC is estimated by the partial TPC in the optimal projection set. The projection drift is calculated by the measured TPC and the estimated TPC. The interval search method is used so that the proposed method can adapt to the case of a truncated projection due to drift. The fixed-angle scanning experiment of

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6

Soethe, Cristina, Cristiano André Steffens, Leonora Mansur Mattos, Nathalie Alcântara Ferreira, and Daiane Michele Mayer. "Postharvest quality and functional compounds in "dedo-de-moça" 'BRS Mari' pepper fruit at different stages of maturity." Ciência Rural 46, no. 8 (2016): 1322–28. http://dx.doi.org/10.1590/0103-8478cr20141795.

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ABSTRACT: The purpose of this study was to evaluate the physicochemical characteristics and functional properties of "dedo-de-moça" 'BRS Mari' pepper fruits at different maturity stages, and determine the ideal harvest stage for fresh consumption. The pepper plants were grown in the experimental field of Embrapa Hortaliças (Brasília, DF, Brazil) in 2012, and their fruits were evaluated at 20, 30, 40, 50, 60, 70, and 80 days after anthesis (DAA) to determine the soluble solid content (SS), titratable acidity (TA), SS/TA ratio, color (hue angle and lightness), a, b, and total chlorophyll, total

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7

SHAO, MING, and LIANG LI. "A STUDY ON THE INTRINSIC TIME RESOLUTION OF THE MRPC USED IN THE STAR-TOF." International Journal of Modern Physics E 16, no. 07n08 (2007): 2476–83. http://dx.doi.org/10.1142/s0218301307008124.

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Time-Of-Flight (TOF) based on Multi-gap Resistive Plate Chamber (MRPC) detectors have been successfully operating at the STAR experiment since 2003.2,3 The MRPC time resolution is however found to be significantly worse2 (80-90 ps) than that previously obtained in beam test (60 ps).4 In order to fully understand MRPC working principles and operating requirements, an extensive calibration study is performed using data collected by STAR in 200 GeV Au + Au collisions in 2004. The relation between MRPC timing, signal amplitude, incident angle and momentum are discussed. Contributions from tracking

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8

Muzolf-Panek, Małgorzata, and Agnieszka Waśkiewicz. "Relationship between Phenolic Compounds, Antioxidant Activity and Color Parameters of Red Table Grape Skins Using Linear Ordering Analysis." Applied Sciences 12, no. 12 (2022): 6146. http://dx.doi.org/10.3390/app12126146.

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Color, being one of the most important sensory characteristics, could be associated to the phenolic compound content and/or the antioxidant activity of fruits and vegetables. In this study, linear ordering was used to build quality rankings of red table grapes based on color parameters or phenolic compounds. First, the principle component analysis (PCA) was used to show the association between color of red grape skins (evaluated in CIE L*a*b* and L*C*h systems) and their individual phenolic compounds (investigated by the HPLC), total polyphenol content (TPC), total anthocyanins (ACNs), as well

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9

Kumar, Abhinay, Rajan Choudhary, and Ankush Kumar. "Aging characteristics of asphalt binders modified with waste tire and plastic pyrolytic chars." PLOS ONE 16, no. 8 (2021): e0256030. http://dx.doi.org/10.1371/journal.pone.0256030.

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Globally, the growing volume of waste tires and plastics has posed significant concerns about their sustainable and economical disposal. Pyrolysis provides a way for effective treatment and management of these wastes, enabling recovery of energy and produces solid pyrolytic char as a by-product. The use of pyrolytic chars in asphalt binder modification has recently gained significant interest among researchers. As asphalt binder aging influences the cracking, rutting, and moisture damage performance of asphalt binder and the mixtures, evaluation of aging characteristics of char modified asphal

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10

Sarker, Sree Pradip Kumer, and Md Mahmud Alam. "Numerical Analysis of Conjugate MHD Free Convection of Cu–H₂O Nanofluid in a Top Corrugated Trapezoidal Cavity with Multiple Heat Generating Obstacles of Different Shapes." Journal of Advances in Mathematics and Computer Science 40, no. 8 (2025): 30–66. https://doi.org/10.9734/jamcs/2025/v40i82031.

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This research presents a numerical investigation of conjugate magnetohydrodynamic (MHD) free convective flow of Cu–H₂O nanofluid within a top-corrugated trapezoidal cavity containing multiple internal heat-generating objects of different geometries square, star, and triangular. The study is conducted under steady-state, laminar, incompressible conditions using COMSOL Multiphysics to explore the effects of Rayleigh number (Ra), Hartmann number (Ha), cavity inclination angle (λ), and obstacle shape on thermal and flow behavior. Key performance indicators such as Nusselt number, entropy generatio

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11

Zhao, Xianli, Wei Liu, Cong Li, et al. "Solid Particle Erosion Behavior of La2Ce2O7/YSZ Double-Ceramic-Layer and Traditional YSZ Thermal Barrier Coatings at High Temperature." Coatings 12, no. 11 (2022): 1638. http://dx.doi.org/10.3390/coatings12111638.

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Thermal barrier coatings (TBC) used for turbine blades are indispensable for the most advanced aero-engines due to their excellent thermal insulation performance. Solid particle erosion (SPE) at high temperatures is one of the most critical factors in TBC failure. The high-temperature SPE failure behavior of TBC on circular sheets and turbine blades was investigated in this paper at erosion angles 60° and 90°. The high-temperature thermal shock behavior of TBC was also studied as the control group. The SPE failure mechanism of TBC is attributed to the spallation and thickness decrease of TBC.

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12

Fang, T.-G., R. E. Coverdill, C.-F. F. Lee, and R. A. White. "Low-sooting combustion in a small-bore high-speed direct-injection diesel engine using narrow-angle injectors." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 222, no. 10 (2008): 1927–37. http://dx.doi.org/10.1243/09544070jauto751.

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An optically accessible high-speed direct-injection diesel engine was used to study the effects of injection angles on low-sooting combustion. A digital high-speed camera was employed to capture the entire cycle combustion and spray evolution processes under seven operating conditions including post-top-dead centre (TDC) injection and pre-TDC injection strategies. The nitrogen oxide (NO x) emissions were also measured in the exhaust pipe. In-cylinder pressure data and heat release rate calculations were conducted. All the cases show premixed combustion features. For post-TDC injection cases, a

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13

Liu, Jiajia, Jianmin Hu, Mengqi Shen, Ming Yang, and Yingxiang Fang. "LNMR Study on Microstructure Characteristics and Pore Size Distribution of High-Rank Coals with Different Bedding." Advances in Civil Engineering 2021 (October 7, 2021): 1–8. http://dx.doi.org/10.1155/2021/8542630.

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In order to study the pore structure characteristics of high-rank coals with different bedding, NMR experiments were carried out for high-rank coals with different bedding angles (0°, 30°, 45°, 60°, and 90°). The results show that the distribution of T2 map of high-rank coal with different bedding is similar to some extent, showing a double peak or triple peak distribution, and the first peak accounts for more than 97% of the total, indicating that small holes are developed in high-rank coal with different bedding, while macropores are not developed. The influence of bedding angle on the fract

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14

Takagi, Tatsuyoshi, Hung Hong, Natalie Dillon, Peter Crisp, Daniel Cozzolino, and Tim O’Hare. "The Association Between the Flesh Colour and Carotenoid Profile of 25 Cultivars of Mangoes." Molecules 30, no. 8 (2025): 1661. https://doi.org/10.3390/molecules30081661.

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Mango (Mangifera indica L.) cultivars display a wide range of ripe flesh colours, from deep-orange to pale-yellow, largely linked to differences in carotenoid profiles. This study examined the relationship between carotenoid profile and flesh colour across 25 mango cultivars. Flesh colour was measured using chroma (intensity) and hue angle (colour) and correlated with carotenoid content quantified using ultra-high performance liquid chromatography with diode-array detection (UHPLC-DAD). Chroma and hue angle displayed a second-order inverse polynomial relationship with chroma increasing as hue

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15

Xu, Bin, Li Luo, Jian Wu, and Zhi Hao Ma. "The Influence of Injection Timing on Emissions Characteristics of a DI Diesel Engine Fuelled with Pistacia Chinensis Bunge Seed Biodiesel." Advanced Materials Research 634-638 (January 2013): 846–51. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.846.

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The effect of various fuel injection advance angles on the emissions of an electronically controlled, high pressure, common rail, turbocharged GW4D20 diesel engine fuelled with different pistacia chinensis bunge seed biodiesel/diesel blends has been experimentally investigated. The results indicate that brake specific fuel consumption reduces with the increasing of fuel injection advance angle, and the BSFC of blends is higher than diesel. At 25% load, CO and THC are significantly reduced compared with higher load. The CO emission increases with the increment of fuel injection advance angle. A

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16

RENAULT, G., B. S. NIELSEN, J. WESTERGAARD, and J. J. GAARDHØJE. "THE LASER OF THE ALICE TIME PROJECTION CHAMBER." International Journal of Modern Physics E 16, no. 07n08 (2007): 2413–18. http://dx.doi.org/10.1142/s0218301307008021.

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The large TPC (95 m3) of the ALICE detector at the CERN LHC was commissioned in summer 2006. The first tracks were observed both from the cosmic ray muons and from the laser rays injected into the TPC. In this article the basic principles of operating the 266 nm lasers are presented, showing the installation and adjustment of the optical system and describing the control system. To generate the laser tracks, a wide laser beam is split into several hundred narrow beams by fixed micro-mirrors at stable and known positions throughout the TPC. In the drift volume, these narrow beams generate strai

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17

Angling, Matthew J., Sean Elvidge, and Sean B. Healy. "Improved model for correcting the ionospheric impact on bending angle in radio occultation measurements." Atmospheric Measurement Techniques 11, no. 4 (2018): 2213–24. http://dx.doi.org/10.5194/amt-11-2213-2018.

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Abstract. The standard approach to remove the effects of the ionosphere from neutral atmosphere GPS radio occultation measurements is to estimate a corrected bending angle from a combination of the L1 and L2 bending angles. This approach is known to result in systematic errors and an extension has been proposed to the standard ionospheric correction that is dependent on the squared L1 ∕ L2 bending angle difference and a scaling term (κ). The variation of κ with height, time, season, location and solar activity (i.e. the F10.7 flux) has been investigated by applying a 1-D bending angle operator

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18

Liu, Zhaofeng, Guiru Zhu, Yulin Wei, et al. "Enhanced flux performance of polyamide composite membranes prepared via interfacial polymerization assisted with ethyl formate." Water Science and Technology 76, no. 7 (2017): 1884–94. http://dx.doi.org/10.2166/wst.2017.349.

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A novel thin film composite (TFC) polyamide reverse osmosis membrane was prepared via the interfacial polymerization of m-phenylene diamine (MPD) in aqueous phase and 1,3,5-trimesoyl chloride (TMC) in organic phase on a polysulfone ultrafiltration support by assisting with ethyl formate as a co-solvent added in the organic phase. The ethyl formate added in the organic phase is intended to form a narrow miscibility zone, which leads to the thicker reaction zone. The multi-layered loose polyamide structure with larger pore size was formed due to the thicker reaction zone and lower content of MPD

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19

Abu Seman, Mazrul Nizam, Nora’aini Ali, Nurul Ain Jalanni, Che Ku Muhammad Faizal Che Ku Yahya, and Norhafiza Ilyana Yatim. "Characterization Assessment on Nanofiltration Membrane using Steric-Hindrance Pore (SHP) and Teorell-Meyer-Sievers (TMS) Models." Sains Malaysiana 52, no. 3 (2023): 941–51. http://dx.doi.org/10.17576/jsm-2023-5203-18.

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Interfacial polymerization (IP) is a simple process for modifying thin-film composite (TFC) polymers that can be used as separation membranes in water treatment. This work describes the IP process for the preparation of polyester TFC membranes using organic monomers, in particular triethanolamine (TEOA) and trimesoyl chloride (TMC). This work includes an evaluation of monomer concentration and polymerization reaction time as variables to determine the membrane properties and its performance as acid humic removal. The characterization of TFC membranes was investigated using field emission scann

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20

Al-Furaiji, Mustafa, Mohammed Kadhom, Khairi Kalash, Basma Waisi, and Noor Albayati. "Preparation of thin-film composite membranes supported with electrospun nanofibers for desalination by forward osmosis." Drinking Water Engineering and Science 13, no. 2 (2020): 51–57. http://dx.doi.org/10.5194/dwes-13-51-2020.

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Abstract. The forward osmosis (FO) process has been considered to be a viable option for water desalination in comparison to the traditional processes like reverse osmosis, regarding energy consumption and economical operation. In this work, a polyacrylonitrile (PAN) nanofiber support layer was prepared using the electrospinning process as a modern method. Then, an interfacial polymerization reaction between m-phenylenediamine (MPD) and trimesoyl chloride (TMC) was carried out to generate a polyamide selective thin-film composite (TFC) membrane on the support layer. The TFC membrane was tested

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21

Li, Bin, Zong De Liu, Yong Chen, and Li Ping Zhao. "Erosion Resistance of TiC/Fe Composite at High Temperatures." Advanced Materials Research 79-82 (August 2009): 1087–90. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1087.

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With an aim to investigate erosion properties, TiC/Fe composites fabricated by self -propagating high-temperature synthesis and pseudo heat isostatic pressing (SHS/PHIP) technique were studied experimentally. Phase composition, microstructure, composition and microhardness of the products are analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and microhardness tester, respectively. The elevated temperature erosion tests of the TiC/Fe composites were tested with the help of a GW/CS-MS type tester using SiO2 quartz and Al2O3 corundum as the abrasive. The influences of the di

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22

Liu, Jing Jing, Zong De Liu, and Li Ping Zhao. "Erosion Behavior of TiC-xNi Composite Coatings In Situ Synthesized by Electro-Thermal Explosion Ultra-High Speed Spraying." Advanced Materials Research 33-37 (March 2008): 1277–82. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.1277.

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With aim to investigate the effect of the content of Ni on erosion behavior of the TiC-xNi coating at elevated temperatures, The TiC-xNi (x=0, 5, 10, 15 , 20wt.%) composite coatings were in-situ synthesized on nickel-based alloy substrate by the self-developed electro-thermal explosion ultra-high speed spraying (EEUSS) device with the cored wire. Erosion properties of the coatings were assessed by the erosion tester under 90° incidence angle and 650°C. X-ray diffraction (XRD) and microhardness tester were used to investigate the coating phases and microhardness. The coatings consisted of TiC p

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23

ZHANG, S., X. L. BUI, Y. FU, and H. DU. "DEVELOPMENT OF CARBON-BASED COATING OF EXTREMELY HIGH TOUGHNESS WITH GOOD HARDNESS." International Journal of Nanoscience 03, no. 04n05 (2004): 571–78. http://dx.doi.org/10.1142/s0219581x04002395.

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Metallic Al was doped into amorphous carbon (a-C) to form a matrix of a-C(Al) of very low residual stress and high toughness at the expense of some hardness. Nanocrystallites of TiC (nc-TiC) of a few nanometers in size were embedded in this matrix to bring back the hardness. The nanocomposite coating of nc-TiC/a-C(Al) was deposited via co-sputtering of graphite, Ti , and Al targets. Although the nanocomposite coating exhibited a moderately high hardness (about 20 GPa), it possessed extremely high toughness (about 55% of plasticity during indentation deformation) and low residual stress (less t

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24

Ahn, Geunseon, Jun-Young Kim, Jin-Hyung Shim, et al. "Three-Dimensional Printed Customized Scaffolds Covered with Decellularized Bone Extracellular Matrix for Open-Wedge High-Tibial Osteotomy." Bioengineering 11, no. 11 (2024): 1129. http://dx.doi.org/10.3390/bioengineering11111129.

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Void fillers are required for osseous gaps generated after orthopedic procedures as medial open-wedge high-tibial osteotomy (MOWHTO) to provide sufficient structural support and a rapid osteosynthesis. We developed a novel three-dimensional (3D) printing-based platform technology using the customized 3D scaffolds covered with polycaprolactone (PCL)/β-tri-calcium phosphates (β-TCP)/bone decellularized extracellular matrix (dECM) for use as bone substitute scaffold, which can be effectively exploited to estimate the calculated correction angle with preoperative simulations. PCL/β-TCP/bone dECM s

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25

Zhang, W., M. L. Sui, Y. Z. Zhou, J. D. Guo, G. H. He, and D. X. Li. "Evolution of microstructure in TiC/NiCr cermet induced by electropulsing." Journal of Materials Research 18, no. 7 (2003): 1543–50. http://dx.doi.org/10.1557/jmr.2003.0213.

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Microstructures of a TiC/Ni80Cr20 cermet, subjected to single high-current-density electropulsing, were characterized by x-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy. Under the electropulsing, the shift of NiCr peaks versus the reverse change of TiC counterparts illustrates that the treatment gives rise to strong thermal stress impacting on the cermet. The stress, accompanied by the transient rise of temperature, led to microstructural evolutions of the cermet. Some nanostructured TiC grains, consisting of many nanocrystallites with

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26

Adesta, Erry Yulian Triblas, Muataz Al Hazza, Delvis Agusman, and Agus Geter Edy Sutjipto. "Development of Tooling Cost Model for High Speed Hard Turning." Advanced Materials Research 418-420 (December 2011): 1482–85. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1482.

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The current work presents the development of cost model for tooling during high speed hard turning of AISI 4340 hardened steel using regression analysis. A set of experimental data using ceramic cutting tools, composed approximately of Al2O3 (70%) and TiC (30%) on AISI 4340 heat treated to a hardness of 60 HRC was obtained in the following design boundary: cutting speeds (175-325 m/min), feed rate (0.075-0.125 m/rev), negative rake angle (0 to -12) and depth of cut of (0.1-0.15) mm. The output data is used to develop a new model in predicting the tooling cost using in terms of cutting speed, f

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27

Wang, Yuchao, Hui Wang, Dexin Zou, and Huixuan Fu. "Ship Roll Prediction Algorithm Based on Bi-LSTM-TPA Combined Model." Journal of Marine Science and Engineering 9, no. 4 (2021): 387. http://dx.doi.org/10.3390/jmse9040387.

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When ships sail on the sea, the changes of ship motion attitude presents the characteristics of nonlinearity and high randomness. Aiming at the problem of low accuracy of ship roll angle prediction by traditional prediction algorithms and single neural network model, a ship roll angle prediction method based on bidirectional long short-term memory network (Bi-LSTM) and temporal pattern attention mechanism (TPA) combined deep learning model is proposed. Bidirectional long short-term memory network extracts time features from the forward and reverse of the ship roll angle time series, and tempor

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28

Wang, Yu, Junting Li, JingHai Guo, Tiancheng Yuan, and Yanjun Li. "A Simple Method to Prepare Superhydrophobic Surfaces Based on Bamboo Cellulose, and an Investigation of Surface Properties." Coatings 15, no. 7 (2025): 740. https://doi.org/10.3390/coatings15070740.

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The present work introduces a sustainable, low-carbon method to fabricate durable, non-toxic superhydrophobic surfaces using bamboo-derived cellulose. Uniform TEMPO-carboxylated cellulose particles (TOC-Ps), approximately 2 μm in diameter, were synthesized through thermal polymerization and spray drying. These particles, featuring a nano-scale convex structure formed by intertwined TOC nanofibers, were applied to substrates and modified with low-surface-energy materials to achieve superhydrophobicity. At an optimal TOC-P mass ratio of 6%, the surface displayed a water contact angle of 156.2° a

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29

Feijoo, Iria, Pedro Merino, Gloria Pena, Pilar Rey, and Marta Cabeza. "Microstructure and Mechanical Properties of an Extruded 6005A Al Alloy Composite Reinforced with TiC Nanosized Particles and Strengthened by Precipitation Hardening." Metals 10, no. 8 (2020): 1050. http://dx.doi.org/10.3390/met10081050.

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High-energy ball milling was carried out to disperse 3 vol% TiC nanoparticles (ex situ reinforcement) in a high-pressure inert gas-atomised prealloyed micron-sized 6005A Al alloy (AA6005A), with a Si/Mg atomic ratio of 1.32 powder matrix. Nanocomposite powders were consolidated by hot extrusion in strip shape at 500 °C, followed by a T6 ageing heat treatment. The microstructural features of the consolidated and precipitation hardening nanocomposites specimens were studied using X-ray diffractometry (DRX), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission

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Durlu, Nuri, Nan Yao, David L. Milius, and Ilhan A. Aksay. "Liquid-phase sintering of BN doped Fe-Cu/TiC composites." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 666–67. http://dx.doi.org/10.1017/s0424820100165793.

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Fe-Cu composites are commonly produced by liquid phase sintering (above the melting temperature of Cu, 1085°C). The wear resistance of these Fe-Cu alloys can be enhanced by introducing hard particles, e.g., TiC, into the matrix. In such cases, however, the densification of Fe-Cu/TiC composites by liquid phase sintering becomes difficult mainly due to the high wetting angle (110° at 1100-1200°C in argon) of liquid Cu with TiC particles. Especially when the amount of the TiC phase is high enough to form a continuous network of TiC grains, full densification is only achieved through hot pressing.

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Solnař, Stanislav, Jan Medek, Abubakar Shola Suleiman, and Patrik Vyhlídal. "On a static and dynamic calibration of thermochromic liquid crystals." Acta Polytechnica 61, no. 4 (2021): 562–69. http://dx.doi.org/10.14311/ap.2021.61.0562.

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The paper deals with a static and dynamic calibration of selected wide-range thermochromic liquid crystals (TLC - SolarDust 24C), which are very easy to ingest and can provide accurate information on the temperature distribution on different surfaces. Static calibration problems, such as TLC illumination angle or illumination intensity, are solved and conclusions are drawn for the application of such a measurement. Dynamic experiments also indicate a certain time delay (around 50 ms) of the applied TLC measurement layer, which is very important to know for dynamic experimental methods, but the

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32

Presby, Michael J., Jamesa L. Stokes, Bryan J. Harder, Kang N. Lee, and Leland C. Hoffman. "High-Temperature Solid Particle Erosion of Environmental and Thermal Barrier Coatings." Coatings 13, no. 5 (2023): 902. http://dx.doi.org/10.3390/coatings13050902.

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Solid particle erosion (SPE) is a common phenomenon observed in gas turbine engines. Particles entrained in the gas flow impact engine hardware, resulting in micro-scale damage that leads to deleterious effects such as material removal. For protective coatings, damage due to SPE is a key concern, since it can negatively affect the durability of the coating and subsequently the life of the underlying component. In this work, the high-temperature SPE behavior of two state-of-the-art environmental barrier coatings (EBCs) deposited via air plasma spray (APS) is investigated using alumina erodent t

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Kotlhao, Kate, Isiaka A. Lawal, Richard M. Moutloali, and Michael J. Klink. "Antifouling Properties of Silver-Zinc Oxide Polyamide Thin Film Composite Membrane and Rejection of 2-Chlorophenol and 2,4-Dichlorophenol." Membranes 9, no. 8 (2019): 96. http://dx.doi.org/10.3390/membranes9080096.

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The silver-zinc oxide (Ag-ZnO) polyamide thin film composite (PA-TFC) membrane was prepared by interfacial polymerization. The Ag-ZnO/PA-TFC membrane was characterized by attenuated total reflectance fourier-transform infrared spectroscopy (ATR-FTIR) for polyamide functional groups and contact angle for surface hydrophilicity. The Ag-ZnO/PA-TFC membrane was further characterized by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) for morphology and surface roughness, respectively. The performance of the fabricated membrane was investigated using pure water flux, permeabilit

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Britto, Douglas de, and Odilio Benedito Garrido Assis. "Chemical, biochemical, and microbiological aspects of chitosan quaternary salt as active coating on sliced apples." Food Science and Technology 32, no. 3 (2012): 599–605. http://dx.doi.org/10.1590/s0101-20612012005000089.

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The biocompatibility of chitosan and chitosan quaternary salt coatings was evaluated for use as edible coatings for sliced apple. Measurement of water loss, color change, and fungal growth appearance were monitored as a function of time. A significant brownish effect was observed on chitosan coated slices, varying greatly from L* = 76.5 and Hue angle = 95.9° (t = 0) to L* = 45.3 and Hue angle = 69.8° (t = 3 days), whilst for TMC coated samples the variation was considerable lower (L* = 74.1; Hue angle = 95.0°) to (L* = 67.0; Hue angle = 83.8°) within the same period. The hydrosoluble derivativ

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Gilles, Ralph, Debashis Mukherji, Lukas Karge, et al. "Stability of TaC precipitates in a Co–Re-based alloy being developed for ultra-high-temperature applications." Journal of Applied Crystallography 49, no. 4 (2016): 1253–65. http://dx.doi.org/10.1107/s1600576716009006.

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Co–Re alloys are being developed for ultra-high-temperature applications to supplement Ni-based superalloys in future gas turbines. The main goal of the alloy development is to increase the maximum service temperature of the alloy beyond 1473 K,i.e.at least 100 K more than the present single-crystal Ni-based superalloy turbine blades. Co–Re alloys are strengthened by carbide phases, particularly the monocarbide of Ta. The binary TaC phase is stable at very high temperatures, much greater than the melting temperature of superalloys and Co–Re alloys. However, its stability within the Co–Re–Cr sy

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Wang, Fei, Xuemin Zhang, Lei Dong, et al. "Monitoring Seismo-TEC Perturbations Utilizing the Beidou Geostationary Satellites." Remote Sensing 15, no. 10 (2023): 2608. http://dx.doi.org/10.3390/rs15102608.

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Electromagnetic signals transmitted from the Beidou geostationary satellites can be utilized to monitor changes in ionospheric total electron contents (TECs) at motionless ionospheric pierce points (IPPs) over the Earth’s surface 24 h a day. The TEC perturbations at close IPPs detected via distinct horizontal azimuths and elevation angles can be examined by utilizing different measuring geometries formed by the selected geostationary satellites and ground-based Global Navigation Satellite System (GNSS) stations. The M6.9 Menyuan earthquake occurred in northwest China on 7 January 2022. We coll

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Tong, Xiao, Hao Fu, Xu Jie He, Li Min Zhao, and Tong Jiang. "Economic Evaluation Methodology of New Energy-Saving Power Transformers and Suggestions for Challenges." Applied Mechanics and Materials 668-669 (October 2014): 775–79. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.775.

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For energy-saving and consumption-reducing, new energy-saving transformer becomes more and more important. Via an economic evaluation methodology called Total Owning Cost (TOC), this article compares energy-saving transformer with high-energy transformer for examples in the angle of transformer loss and picks up the optimum energy-efficient transformer which can be expected to gain more benefit during transformer life cycle. This article also analyses cost of silicon steel sheet used in the transformer core and benefit in Total Owning Cost (TOC) of upgrading silicon steel sheet which primarily

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Abdelaal, Mohamed, Mohamed Hazem Abdellatif, Moritz Riede, and Ghada Bassioni. "Studying the Effect of High Substrate Temperature on the Microstructure of Vacuum Evaporated TAPC: C60 Organic Solar Thin Films." Materials 14, no. 7 (2021): 1733. http://dx.doi.org/10.3390/ma14071733.

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Organic solar cells (OSCs), also known as organic photovoltaics (OPVs), are an emerging solar cell technology composed of carbon-based, organic molecules, which convert energy from the sun into electricity. Key for their performance is the microstructure of the light-absorbing organic bulk heterojunction. To study this, organic solar films composed of both fullerene C60 as electron acceptor and different mole percentages of di-[4-(N,N-di-p-tolyl-amino)-phenyl]-cyclohexane (TAPC) as electron donor were evaporated in vacuum in different mixing ratios (5, 50 and 95 mol%) on an ITO-coated glass su

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Ishizuka, Kazuo. "New form of Transmission Cross Coefficient for High-Resolution Imaging." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 1 (1990): 60–61. http://dx.doi.org/10.1017/s0424820100179051.

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It is well known that taking into account spacial and temporal coherency of illumination as well as the wave aberration is important to interpret an image of a high-resolution electron microscope (HREM). This occues, because coherency of incident electrons restricts transmission of image information. Due to its large spherical and chromatic aberrations, the electron microscope requires higher coherency than the optical microscope. On an application of HREM for a strong scattering object, we have to estimate the contribution of the interference between the diffracted waves on an image formation

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Wu, Dong L., Daniel J. Emmons, and Nimalan Swarnalingam. "Global GNSS-RO Electron Density in the Lower Ionosphere." Remote Sensing 14, no. 7 (2022): 1577. http://dx.doi.org/10.3390/rs14071577.

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Lack of instrument sensitivity to low electron density (Ne) concentration makes it difficult to measure sharp Ne vertical gradients (four orders of magnitude over 30 km) in the D/E-region. A robust algorithm is developed to retrieve global D/E-region Ne from the high-rate GNSS radio occultation (RO) data, to improve spatiotemporal coverage using recent SmallSat/CubeSat constellations. The new algorithm removes F-region contributions in the RO excess phase profile by fitting a linear function to the data below the D-region. The new GNSS-RO observations reveal many interesting features in the di

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Ho, Tsung-Jung, Kuei-Ting Chou, Cheng-Hsuan Li, Bor-Chen Kuo, and Tzung-Chi Huang. "Quantitative Motion Analysis of Tai Chi Chuan: The Upper Extremity Movement." BioMed Research International 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/2538765.

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The quantitative and reproducible analysis of the standard body movement in Tai Chi Chuan (TCC) was performed in this study. We aimed to provide a reference of the upper extremities for standardizing TCC practice. Microsoft Kinect was used to record the motion during the practice of TCC. The preparation form and eight essential forms of TCC performed by an instructor and 101 practitioners were analyzed in this study. The instructor completed an entire TCC practice cycle and performed the cycle 12 times. An entire cycle of TCC was performed by practitioners and images were recorded for statisti

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Kumar, Rajive, Prashant Bansal, Bader S. Al-Mal, et al. "Seismic data conditioning and orthotropic rock-physics-based inversion of wide-azimuth P-wave seismic data for fracture and total organic carbon characterization in a north Kuwait unconventional reservoir." GEOPHYSICS 83, no. 4 (2018): B229—B240. http://dx.doi.org/10.1190/geo2017-0673.1.

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Optimization of production from unconventional reservoirs requires estimates of reservoir properties such as porosity, total organic carbon (TOC) content, clay content, fluid saturation, and fracture intensity. The porosity and TOC content help to determine reservoir quality, and the natural fracture intensity provides information important for the completion strategy. Because shale reservoirs display intrinsic anisotropy due to layering and the partial alignment of clay minerals and kerogen with the bedding plane, the minimum acceptable representation of the anisotropy of naturally fractured

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Liu, C. H., Wen-Zhi Li, and Heng-De Li. "TiC/metal nacrous structures and their fracture toughness increase." Journal of Materials Research 11, no. 9 (1996): 2231–35. http://dx.doi.org/10.1557/jmr.1996.0283.

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Multilayers of TiC and a series of metals have been fabricated by ion beam sputtering deposition to simulate nacre. The individual layer thickness varies from 1 to 10 nm, and the total thickness of the multilayers is about 1 μm. Transmission electron microscopy (TEM), low-angle x-ray diffraction (LXRD), and high-resolution electron microscopy (HREM) show their periodicity and lattice images. A particular method is devised to evaluate the relative toughness of this artificial pearlite. It is shown that the toughness of these nanocomposite materials can be tremendously improved. A maximum of tou

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Kuvshinova, Maria A., Sergey V. Saroyan, and Anna V. Goncharova. "Improving transscleral cyclophotocoagulation for the treatment of dogs with different forms of glaucoma." Veterinariya, Zootekhniya i Biotekhnologiya 5, no. 126 (2024): 76–88. http://dx.doi.org/10.36871/vet.zoo.bio.202405008.

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Treatment of glaucoma in dogs with conservative methods does not always achieve a sufficient hypotensive effect, so the issue of surgical intervention is relevant. Due to the high risk of complications after invasive surgery, the use of transscleral cyclophotocoagulation (TCPC) is advisable. The article discusses the principle of selecting a protocol for laser exposure to the eye in the treatment of various forms of glaucoma in dogs. The work was carried out at the Department of Veterinary Surgery of the Federal State Budgetary Educational Institution of Higher Education MGAVMiB – MBA named af

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Uemura, Sojiro, Shiho Yamamoto Kamata, Kyosuke Yoshimi, and Sadahiro Tsurekawa. "Microstructural evolution during high-temperature tensile creep at 1,500°C of a MoSiBTiC alloy." High Temperature Materials and Processes 39, no. 1 (2020): 136–45. http://dx.doi.org/10.1515/htmp-2020-0039.

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AbstractMicrostructural evolution in the TiC-reinforced Mo–Si–B-based alloy during tensile creep deformation at 1,500°C and 137 MPa was investigated via scanning electron microscope-backscattered electron diffraction (SEM-EBSD) observations. The creep curve of this alloy displayed no clear steady state but was dominated by the tertiary creep regime. The grain size of the Moss phase increased in the primary creep regime. However, the grain size of the Moss phase was found to remarkably decrease to <10 µm with increasing creep strain in the tertiary creep regime. The EBSD observations reveale

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Ali, Syed Abbas, and Samir Saraswati. "A comparison of sliding mode and FRF-based observers for cylinder pressure estimation of spark ignition engine." Transactions of the Institute of Measurement and Control 39, no. 2 (2016): 163–72. http://dx.doi.org/10.1177/0142331215604895.

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A sliding mode observer (SMO) is proposed for the estimation of cylinder pressure using crankshaft speed fluctuations. SMO parameters are updated using the difference between measured and observed crankshaft speed. The governing equations of cylinder pressure and crankshaft speed are described by a one-zone combustion model and crankshaft model dynamics, respectively. The observer is found to be unstable at top dead centre (TDC) due to zero combustion torque at this point. To prevent instability, observer gains are switched off near TDC and observer performance depends only on the modelling ac

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Liu, Longhai, Haiyuan Yu, Chenglong Zheng, et al. "Nondestructive Thickness Measurement of Thermal Barrier Coatings for Turbine Blades by Terahertz Time Domain Spectroscopy." Photonics 10, no. 2 (2023): 105. http://dx.doi.org/10.3390/photonics10020105.

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Owing to its high penetrability with dielectric materials, terahertz time domain spectroscopy (THz-TDS) is a promising nondestructive measurement technology. The coating thickness deviation and defect of thermal barrier coatings (TBC) will affect its thermal insulation performance and lifetime. In this work, THz-TDS was applied to measure the coating thickness distribution of TBC. The refractive index was obtained by THz-TDS transmission mode. To avoid the normal incidence THz signal loss, the THz signal was reflected from the TBC with a 10° incident angle, which also made the measurement resu

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Dang, Huyen T., Roberto M. Narbaitz, Takeshi Matsuura, and Kailash C. Khulbe. "A Comparison of Commercial and Experimental Ultrafiltration Membranes via Surface Property Analysis and Fouling Tests." Water Quality Research Journal 41, no. 1 (2006): 84–93. http://dx.doi.org/10.2166/wqrj.2006.009.

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Abstract Surface modified polyethersulfone (PES) membranes via the addition of different hydrophiLic Surface Modifying Macromolecules (LSMMs) have been developed by Matsuura, Narbaitz and co-workers. This study compares the performance of the best PES-LSMM membrane with nine commercial ultrafiltration membranes manufactured using five different types of base polymers (polyethersulfone, polysulfone, celluloseacetate, polyacrylonitrile and cellulose) in the same range of molecular weight cutoff (MWCO) (from 40 to 120 kDal). All membranes were characterized by using atomic force microscopy, conta

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Rahayu, Susi, Dian W. Kurniawidi, and Abdul Gani. "Pemanfaatan Limbah Cangkang Kerang Mutiara (Pinctada Maxima) Sebagai Sumber Hidroksiapatit." Jurnal Pendidikan Fisika dan Teknologi 4, no. 2 (2018): 226. http://dx.doi.org/10.29303/jpft.v4i2.839.

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Pearl shells (pinctada maxima) are the superior commodities in West Nusa Tenggara Province. The shellfish is utilized as a producer of pearls while the waste of pearl shells has not been widely used by the community. Main composition of fhe pearl shells is calcium. CaO content was tested using AAS and obtained CaO in shells as much as 52.23%. CaO is used as a source of hydroxyapatite (HAp). Shellfish powder is synthesized with H3PO4 compound. Synthesis is conducted by precipitation method. Synthesis results were analyzed utilizing XRD and FTIR. From the examination, HAp compounds were identifi

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Wang, Jiawei, Linwen Wang, Haiyang Lu, et al. "Enhanced Erosion Resistance of Cr3C2-TiC-NiCrCoMo Coatings: Experimental and Numerical Investigation of Erosion Mechanisms." Coatings 15, no. 3 (2025): 294. https://doi.org/10.3390/coatings15030294.

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To enhance the erosion resistance of typical Cr3C2-NiCr coatings, the Cr3C2-TiC-NiCrCoMo (NCT) coating was developed and deposited by high-velocity oxygen fuel spray (HVOF). The erosion resistance and mechanisms of the coating were investigated using numerical simulations and experimental methods. A comprehensive calculation model for the coating erosion rate was developed, incorporating factors such as the properties of the eroded particles, the characteristics of the coating, and the conditions of erosion. The erosion rate of the NCT coating was calculated and predicted by the model, and the

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