Showing 5,941 - 5,960 results of 7,249 for search '"metals"', query time: 0.08s Refine Results
  1. 5941

    Especuladores en el mercado del cobre by Patricio Jaramillo G., Jorge Selaive C.

    Published 2008-01-01
    “…Los resultados señalan nulos efectos permanentes de las posiciones en las variaciones de corto plazo experimentadas por el mismo metal. Asimismo, se encuentran efectos positivos pero marginalmente no significativos en la volatilidad del precio. …”
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  2. 5942

    Coordination Behavior of Ni2+, Cu2+, and Zn2+ in Tetrahedral 1-Methylimidazole Complexes: A DFT/CSD Study by Samuel Tetteh

    Published 2018-01-01
    “…The interaction between metal d-orbitals (donor) and ligand orbitals (acceptor) was also explored using second-order perturbation of the Fock matrix. …”
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  3. 5943

    In Vitro Antioxidative Evaluation of α- and β-Carotene, Isolated from Crude Palm Oil by Surashree Sen Gupta, Mahua Ghosh

    Published 2013-01-01
    “…From the several assays conducted, an observation was made that the antioxidant activity of the product shifted between antioxidant and prooxidant effects depending on the concentration and the system analyzed. The metal chelation, DPPH radical scavenging, and superoxide scavenging activities showed almost similar results in terms of high activity at lowest concentrations. …”
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  4. 5944

    Removal of Copper(II) Ions from Aqueous Solution Using Biomass by Xue Song Wang, Li Ping Huang, Yuan Li, Jing Chen

    Published 2010-02-01
    “…However, few studies have been conducted using it to remove heavy metal ions from aqueous solutions. In the present study, the biosorption of copper(II) ions was investigated using non-living Sphingomonas paucimobilis biomass isolated from activated sludge, as obtained from the Lianyungang Dapu sewage treatment plant in China. …”
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  5. 5945

    A Case of Malignant Biliary Obstruction with Severe Obesity Successfully Treated by Endoscopic Ultrasonography-Guided Biliary Drainage by Takashi Obana, Shuuji Yamasaki

    Published 2016-01-01
    “…Consequently, EUS-BD (choledochoduodenostomy), followed by direct metallic stent placement, was performed as a third drainage method. …”
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  6. 5946

    Design and Analysis of Continuously Variable Transmission based on Nested Structure by Jianming Shen, Jinfu Liu, Juan Li, Shouqi Chen, Linsen Xu, Zhengyan Jiang, Zhipeng Liu, Xingcan Liang

    Published 2022-03-01
    “…Secondly,the mathematical models of envelope angle on planetary and sun gear,transmission ratio,and radial movement of metal belt are deduced. Based on the multi-rigid-body dynamics simulation software,the output speed of the CVT is verified to show that the forward and reverse deviations of the transmission are 1.89% and 3.87% respectively. …”
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  7. 5947

    Thermal Energetic Reactor with High Reproduction of Fission Materials by Vladimir M. Kotov

    Published 2012-01-01
    “…Water cooled reactors with usage 12% of raw uranium and liquid metal cooled reactors with usage 25% of raw uranium are discussed. …”
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  8. 5948

    Theoretical and Experimental Study of Copper Electrodeposition in a Modified Hull Cell by Srinivas Palli, Suhash R. Dey

    Published 2016-01-01
    “…Experimentally, single Cu metal electrodeposition is carried out at different applied average current densities (2, 4.1, and 8.2 mA cm−2) in a modified Hull. …”
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  9. 5949

    Dry Reforming of Methane with Mesoporous Ni/ZrO2 Catalyst by Subhan Azeem, Rabya Aslam, Mahmood Saleem

    Published 2022-01-01
    “…The present study focuses on the dry reforming of methane over Ni-supported mesoporous zirconia support. Ni metal was loaded over in-house synthesized mesoporous zirconia within the 0–15 wt% range using the wet impregnation method. …”
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  10. 5950

    Magnetic anisotropy of 4f atoms on a WSe2 monolayer: a DFT + U study by Johanna P. Carbone, Gustav Bihlmayer, Stefan Blügel

    Published 2025-01-01
    “…Abstract Inspired by recent advancements in the field of single-atom magnets, particularly those involving rare-earth (RE) elements, we present a theoretical exploration employing DFT+U calculations to investigate the magnetic properties of selected 4f atoms, specifically Eu, Gd, and Ho, on a monolayer of the transition-metal dichalcogenide WSe2 in the 1H-phase. This study comparatively examines RE with diverse 4f orbital fillings and valence chemistry, aiming to understand how different coverage densities atop WSe2 affect magnetocrystalline anisotropy. …”
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  11. 5951

    Conflitti del lavoro, lavoro in conflitto. Trasformazioni aziendali globali e nuove forme di fragilità e precarizzazione by Fulvia D’Aloisio

    Published 2016-05-01
    “… The paper focuses on the issue of conflict in contemporary metal-mechanic work and inside the traditional site of blucollars conflict, the factory. …”
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  12. 5952

    A modular approach to catalytic stereoselective synthesis of chiral 1,2-diols and 1,3-diols by Sheng Xu, Yuanyuan Ping, Yinyan Su, Haoyun Guo, Aowei Luo, Wangqing Kong

    Published 2025-01-01
    “…However, their synthesis relies on the use of toxic or expensive metal catalysts or suffer from low regioselectivity. …”
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  13. 5953

    Hybrid Vibration Control under Broadband Excitation and Variable Temperature Using Viscoelastic Neutralizer and Adaptive Feedforward Approach by João C. O. Marra, Eduardo M. O. Lopes, José João de Espíndola, Walter Antônio Gontijo

    Published 2016-01-01
    “…In that context, this work deals with the development and practical implementation of a hybrid (passive-active/adaptive) vibration control system over a metallic beam excited by a broadband signal and under variable temperature, between 5 and 35°C. …”
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  14. 5954

    Construction of Tb3+ PVC-MembraneElectrode Based on N,N’-Bis(pyrrolylmethylene)-2-aminobenzylamine by Hassan Ali Zamani, Zynab Rafati, Soraia Meghdadi

    Published 2011-01-01
    “…The recommended sensor revealed comparatively good selectivity with respect to most alkali, alkaline earth, some transition and heavy metal ions. It was successfully employed as an indicator electrode in the potentiometric titration of Tb(III) ions with EDTA. …”
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  15. 5955

    Investigation on the Mechanical Properties of Powder Metallurgy-Manufactured AA7178/ZrSiO4 Nanocomposites by R. Srinivasan, S. Karunakaran, M. Hariprabhu, R. Arunbharathi, S. Suresh, S. Nanthakumar, S. K. H. Ahammad, S. Mayakannan, Mani Jayakumar

    Published 2023-01-01
    “…The versatility of metal matrix composites (MMCs) makes them a promising material for various industrial applications. …”
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  16. 5956

    Quality assurance multi-component environments moved belt conveyors energy saving pulsed magnetic extraction by О. S. Parsentev, T. A. Musaev

    Published 2024-02-01
    “…A subsystem for the separation-detection of metal fragments in a non-magnetic granular medium proposed for the development of signaling and current control devices in extracting windings. …”
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  17. 5957

    Single-ion gel-polymer electrolyte for improving the performances of Li-ion batteries by Radu Dorin Andrei, Giorgian Cosmin Ungureanu, Luisa Roxana Mandoc, Soha Aldroubi, Nicolas Louvain, Julian Richard Tolchard, Mihaela Buga

    Published 2025-03-01
    “…However, issues with electrolyte performance at lower temperatures as well as issues with the effective deposition and stripping of metallic lithium anodes are now impeding their development. …”
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  18. 5958

    Analysis of Springback Behaviour in Micro Flexible Rolling of Crystalline Materials by Feijun Qu, Zhengyi Jiang, Xiaogang Wang, Cunlong Zhou

    Published 2018-01-01
    “…This paper presents a constitutive modelling of the polycrystalline thin metal strip under a state of combined loading in microflexible rolling. …”
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  19. 5959
  20. 5960

    A Novel Parabolic Trough Concentrating Solar Heating for Cut Tobacco Drying System by Jiang Tao Liu, Ming Li, Qiong Fen Yu, De Li Ling

    Published 2014-01-01
    “…The opening width effect of V type metal cavity absorber was investigated. A cut tobacco drying mathematical model calculated by fourth-order Runge-Kutta numerical solution method was used to simulate the cut tobacco drying process. …”
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