Results 71 to 80 of about 541 (224)

Construction of Lean Coal Molecular Structure Model Based on Spectroscopic Characterization

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The chemical structure of coal exerts a profound influence on its properties and utilization pathways. A comprehensive analysis of coal's molecular structure is crucial for mitigating environmental pollution arising from coal combustion and improving the efficiency of coal utilization.
Song Liu, Hao Xia, Tao Ge, Yaling Bai, Shoulan Wang, Yunfang Liu   +5 more
wiley   +1 more source

A Study on the Coupled Vibration of Main Engine Body by the Torsional Vibration of Crankshaft in Marine Diesel Engine [PDF]

, 2018
In order to prevent the adverse effects on the ship and to protect the related equipment by the vibration, the vibration of main engine(s) which is the large 2-stroke diesel engine is checked at the design, shop test and/or sea trial.
김상진
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Thermal Black‐Infused Polyurethane Rigid Foams: Novel Formulations Toward Higher‐Performance and More Sustainable Insulation

Journal of Applied Polymer Science, EarlyView.
Thermal black improves polyurethane foam structure and stability. It helps the foam rise smoothly while promoting the formation of smaller, more uniform cells. The foam keeps its strength and insulation performance while reducing shrinkage. Its clean production and easy processing make it a sustainable, cost‐effective option for high‐performance ...
Mihaela Mihai, Adrien Faye, Sajjad Saeidlou, Edward Norton   +3 more
wiley   +1 more source

Effect of moisture content on the triboelectric charging of polymers [PDF]

International audienceThe triboelectrostatic separation allows the sorting of granular polymers according to their contact charging characteristics. It consists in the appropriate triboelectric charging of particles, followed by their selective sorting ...
Aouimeur, Djillali, Dascalescu, Lucian, Zeghloul, Thami, Lungu, Mihai, Dani, Csaba, Achouri, Imed-Eddine   +5 more
core   +1 more source

Sintering‐Driven Modulation of Lattice Dynamics, Elastic Behavior, and Dielectric Response in Al–Sn Co‐Doped Zinc Ferrite Nanoparticles

Advanced Physics Research, EarlyView.
Sintering ZnAl0.1Sn0.1Fe1.8O4 nanoparticles at 1200°C optimizes structural lattice dynamics, significantly enhancing both macroscopic elastic stiffness and high‐frequency dielectric response through synergistic Al3+ stabilization and Sn4+‐driven charge transport. ABSTRACT In this work, ZnAl0.1Sn0.1Fe1.8O4 (ZASFO) ferrites were synthesized via a sol–gel
Matin Patel, Kirti R. Desai, Devendra S. Wagare, Sagar E. Shirsath, Prashant D. Netankar   +4 more
wiley   +1 more source

Experimental modeling of Wiener filters estimated on an operating diesel engine [PDF]

, 2011
International audienceSound source separation in diesel engines can be implemented using a Wiener filter, or spectrofilter, that can extract the combustion contribution in the overall noise.
Leclere, Q., Parizet, Etienne, Drouet, J.   +2 more
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First‐Principles Study of Structural, Mechanical, Electronic, Thermodynamical, and Optical Properties of XGaO2 (X = Rb and Cs): Unlocking Its Green Energy Potential

Advanced Physics Research, EarlyView.
This study employs density functional theory (DFT) to investigate the structural, mechanical, electronic, optical, and thermodynamic properties of RbGaO2 and CsGaO2. The calculated band structures and band‐edge positions indicate semiconducting behavior and favorable alignment for photocatalytic dye degradation and hydrogen evolution, highlighting ...
Md. Zuel Rana, Md. Saiful Islam, Jahid Hasan, Abdul Barik, Mahamud Hasan Reedoy, Afroza Khatun, Md. Abde Mannaf, Ehesanul Hoq, Neelufar Panna, M. S. Alam   +9 more
wiley   +1 more source

Vibration Isolation Of A Four Cylinder Internal Combustion Engine [PDF]

, 2017
Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2016Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2016İnsanlar ilk çağlardan beri uçmayı hayal etmiştir.
Erkopan, Barbaros
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7000 Years of Aboriginal Mining at Sugarloaf Hill in the Riverland Region of South Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Silcrete and chert are commonly represented in Aboriginal archaeological lithic assemblages across large parts of the southwestern Murray‐Darling Basin (MDB). In South Australia (SA), these materials were sourced from a series of quarries located along the incised course of the Murray River through the upper Riverland region.
Craig Westell, Ian Moffat, Richard Fullagar, Amy Roberts, Justine Kemp, Mike Morley, Marc Fairhead, Simon Hoad, River Murray and Mallee Aboriginal Corporation   +8 more
wiley   +1 more source

Diagnosing the engine valve clearance, on the basis of the energy changes of the vibratory signal [PDF]

, 2009
Celem badań jest diagnozowanie zwiększonego luzu zaworowego silnika spalinowego, który może być spowodowany uszkodzeniem hydraulicznych automatycznych kasowników luzu zaworowego lub nadmiernym zużyciem elementów głowicy.
Figlus, T.
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