Showing 5,261 - 5,280 results of 7,249 for search '"metals"', query time: 0.08s Refine Results
  1. 5261

    Effect of Carbon Supported Pt Catalysts on Selective Hydrogenation of Cinnamaldehyde by Qing Han, Yunfei Liu, Dong Wang, Fulong Yuan, Xiaoyu Niu, Yujun Zhu

    Published 2016-01-01
    “…It is of great significance to evaluate the possible differences between different supports arising from metal dispersion and electronic effects, in terms of activity and selectivity. …”
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    Article
  2. 5262

    Bulky Vehicles Recycling. Part 2 - Recycling of Selected Vehicle Components by Anna Matuszewska, Piotr Wieczorek, Marlena Owczuk

    Published 2020-12-01
    “…The article describes the recycling methods for selected components (tires, windows, catalytic converters, polymer and metal materials, operating fluids), with an indication of the differences between heavy goods vehicles and passenger cars. …”
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    Article
  3. 5263

    Tungsten/Platinum Hybrid Nanowire Growth via Field Emission Using Nanorobotic Manipulation by Zhan Yang, Masahiro Nakajima, Yasuhito Ode, Toshio Fukuda

    Published 2011-01-01
    “…Thus, it is possible to fabricate various metallic hybrid nanowires by changing the precursor materials. …”
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  4. 5264

    Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS by Annalisa Pola, Davide Battini, Marialaura Tocci, Andrea Avanzini, Luca Girelli, Candida Petrogalli, Marcello Gelfi

    Published 2019-07-01
    “…Fatigue tests were performed on sand-blasted AlSi10Mg samples produced by Direct Metal Laser Sintering (DMLS) of powders. The effect of sand-blasting on surface properties was evaluated by roughness and residual stresses measurements, together with morphological analysis, in comparison with as-fabricated condition. …”
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    Article
  5. 5265

    Analysis and Research of the High-Cycle Fatigue Fracture Mode Based on Stress Ratio and Residual Stress of Ti-6Al-4V by Fu Wang, Jian-Jun Wang, Qin-Sheng Li, Guo-Zhu Ren, Xin-Jian Zhang, Shu-quan Zhang

    Published 2022-01-01
    “…The content of titanium is next to the metal elements of aluminum, iron and magnesium, iron, and magnesium; titanium alloys have low density, high specific strength (the ratio of tensile strength to density), wide working range (−253°C–600°C), and excellent corrosion resistance melting point; the chemical activity of titanium alloy is very high, and it easily reacts with hydrogen, oxygen, and nitrogen, so it is difficult to be smelted and processed, and the processing cost is high. …”
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  6. 5266

    Research progress of steel slag-based carbon sequestration by Qing Zhao, Chengjun Liu, Xiaohui Mei, Henrik Saxén, Ron Zevenhoven

    Published 2025-01-01
    “…The carbonation process efficacy and its environmental impact (including global warming, energy use, water use, and metallic pollutants) were evaluated. Furthermore, the challenges and prospects of the further development of the SS-CCU process were discussed.…”
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  7. 5267

    STUDIES OF MINERAL COMPOSITION OF ORES OF THE KUMTOR DEPOSIT (CENTRAL TIEN SHAN) BY QXRD AND XRF METHODS by A.G. Shevkunov, A.A. Guda, A.A. Skorynina, S.W. McKnight

    Published 2022-09-01
    “…The experimental analyses enabled us to estimate the semi-quantitative content of major ore-forming non-metallic and ore minerals and to establish the possible presence of minerals previously unknown in the composition of ores (barytocalcite, viterite, ferrinatrite, etc.). …”
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  8. 5268

    A Novel Management of Vertical Root Fracture in an Endodontically Treated Mandibular Premolar with Titanium Screw: A Case Report by Chellaswamy Savrimalai Karumaran, M. R. Srinivasan, Anil Kumar Ramachandran, Remya Venkatesan, Chandrasekaran Nirmala, P.S. Sreelakshmi

    Published 2023-07-01
    “…The tooth was rehabilitated with a composite resin core followed by a porcelain-fused metal crown and the patient was followed up for 7 years. …”
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  9. 5269

    Dynamics Model of Gear Hobbing Vibration based on Time-varying Cutting Force by Xia Yu, Wang Shilong, Wang Shuangbu

    Published 2018-01-01
    “…To analyze the vibration characteristics of hob and workpiece system,according to the theory of metal cutting,a calculation method of the time-varying cutting force is proposed,by considering single tooth cutter and double-tooth cutter. …”
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    Article
  10. 5270

    Multi-Template Molecularly Imprinted Polymeric Electrochemical Biosensors by Meltem Agar, Maisem Laabei, Hannah S. Leese, Pedro Estrela

    Published 2025-01-01
    “…Dual/multi-template molecular imprinting techniques have been applied to identify, extract, and detect many targets, from heavy metal ions to viruses, by different methods, such as high-performance liquid chromatography (HPLC), liquid chromatography–mass spectrometry (LC-MS), and piezoelectric, optical, and electrochemical methods. …”
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  11. 5271

    Optimization of Reinforced Aluminium Scraps from the Automobile Bumpers with Nickel and Magnesium Oxide in Stir Casting by V. Vijayan, A. Parthiban, T. Sathish, L. Ponraj Sankar, S. Dinesh Kumar, S. Saravanakumar, Dawit Tafesse

    Published 2021-01-01
    “…Here, the investigation is spotlighted on the aluminium alloy from the waste materials of the automobile bumpers which is a reinforced metal matrix composite created with 5 percentage of nickel and 5 percentage of magnesium oxide through the stir casting method. …”
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  12. 5272

    Fabrication and Characterization of Partial Bio-nano-silica Inclusion in Fibre-Reinforced Concrete for High-performance Applications by D. Vivek, C. Aravind, S. Gokulkumar, M. Aravindh, Yalew Asres

    Published 2023-01-01
    “…Researchers analyse and evaluate only the microstructure, porosity, and fresh and hardened concrete properties of UHPFRC but limited their exploration on the reduction of the mechanical properties of UHPFRC due to the presence of metallic particles and micro-fractures that occur during the generation of hydrogen. …”
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  13. 5273

    Formation of Fe(0)-Nanoparticles via Reduction of Fe(II) Compounds by Amino Acids and Their Subsequent Oxidation to Iron Oxides by K. Klačanová, P. Fodran, P. Šimon, P. Rapta, R. Boča, V. Jorík, M. Miglierini, E. Kolek, L'. Čaplovič

    Published 2013-01-01
    “…Conditions for the reduction were very mild; the temperature did not exceed 52°C, and the optimum pH was between 9.5 and 9.7. The metal iron precipitated as a mirror on the flask or as a colloid in water. …”
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  14. 5274

    Design and simulation of a tunable frequency OTA -C Chebyshev filter by JIANG Jin-guang, WANG Yao-nan

    Published 2006-01-01
    “…A new transconductor operational amplifier(OTA) using active resistor of source degeneration was presented.The method was developed through acting differential pair degenerated by two MOSFET operating in the triode region as active resistor in its input stage,the circuit was designed in working in stable quiescent operating point with folded cas-cade output stage using voltage common-mode feedback(CMFB) circuit.As an tunable cutoff frequency fourth order Chebyshev lowpass filter,an accurately tunable Gm of OTA was used,which employed switching capacitor technique to tune Gm value.Simulated results show that the practical frequency response of the filter is very near to that of idealized prototype by applying 2-poly 4-metal 3.3V power supply 0.35μm CMOS technology spice model.…”
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  15. 5275

    CHARACTERISTICS OF RELICS AND ARTIFACTS AT STONE-TOOL-CRAFTING WORKSHOP RELICS IN THE PREHISTORIC PERIOD IN THE CENTRAL HIGHLANDS by Lê Xuân Hưng

    Published 2020-03-01
    “…The circulation of products created a relatively similar development throughout the Central Highlands, which is a critical premise for the emergence of the Metal Age in this region.…”
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  16. 5276

    Review on natural hydrogen wells safety by Baojiang Sun, Mengjun Zhang, Qian Sun, Jie Zhong, Guanghao Shao

    Published 2025-01-01
    “…The review explores potential solutions like metal coatings, rubber fillers, and cement additives to mitigate these problems. …”
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  17. 5277

    ANN Approach to Predict the Flow Stress of CMn (Nb-Ti-V) Micro Alloyed Steel by Abdelhalim ALLAOUI, Abdelmoumene GUEDRI, Lamia DARSOUNI, Abderrazek DARSOUNI

    Published 2019-06-01
    “…This model has been shown to be more effective in predicting flow stress and results can also be used in the mathematical simulation of hot metal formation processes.…”
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  18. 5278

    Equilibrium Isotherm Modeling, Kinetics and Thermodynamics Study for Removal of Lead from Waste Water by Z. Chowdhury, S. M. Zain, A. K. Rashid

    Published 2011-01-01
    “…Adsorption studies were carried out to delineate the effect of contact time, temperature, pH and initial metal ion concentration. The experimental data followed pseudo second order kinetics which confirms chemisorptions. …”
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  19. 5279

    Adsorption of Cd(II) from Aqueous Solutions by Cellulose Modified with Maleic Anhydride and Thiourea by Yanmei Zhou, Xiaoyi Hu, Qiang Jin, Xinhai Wang, Tongsen Ma

    Published 2013-07-01
    “…In this work, cellulose modified with maleic anhydride and thiourea (CMT) was synthesized as a novel type of adsorbent to remove heavy-metal ion. The synthesized adsorbent was characterized by Fourier transform infrared spectroscopy, elemental analysis, scanning electron microscopy, thermogravimetric analysis and X-ray diffraction. …”
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  20. 5280

    STATUS OF SOIL QUALITY ON RECLAIMED LAND IN AN ARID REGION by Ahmed Asmoay, Ibrahim Mousa, Ahmed Mohamed

    Published 2023-08-01
    “…The study also found that phosphate fertilizers had been used to improve soil fertility, but it was cautioned against using them due to the low soil fertility and potential for heavy metal contamination. The study also compared the quality index of soil, the ratio of sodium absorption, and the percent of base saturation to determine soil quality and fertility. …”
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