Results 81 to 90 of about 205,547 (317)

Quantum Zeno Effect: Irreversible and Quantum Thermodynamic considerations

open access: yes, 2023
The Quantum Zeno Effect slows down the quantum system\u27s time evolution under frequent measurements. This paper aims to study this quantum effect by introducing the definition of time based on an irreversible thermodynamic analysis of quantum systems ...
Umberto, Lucia
core   +1 more source

Thermodynamic, Economic and Environmental Evaluation of an Improved Ventilation Air Methane-Based Hot Air Power Cycle Integrated with a De-Carbonization Oxy-Coal Combustion Power Plant

open access: yesEnergies, 2018
Efficient utilization of ventilation air methane (VAM) as well as improving the energy efficiency of de-carbonization oxy-coal combustion power plants are intensively studied for achieving energy savings and greenhouse gas (GHG) emission control.
Cheng Xu   +4 more
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

open access: yesAdvanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov   +4 more
wiley   +1 more source

Thermodynamic-Certified Conceptual Design of a DMR Refrigeration System for the Natural Gas Liquefaction Process

open access: yes, 2023
The manufacturing process for liquefied natural gas (LNG) is a highly capital-intensive and energy-intensive process, whose design and operation need to be continuously optimized. In this paper, a new conceptual design with the operation for a dual mixed
Qiang Xu (71522)   +5 more
core   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

Part I. Experimental Investigation of an Arc-Heated Supersonic Free Jet. Part II. Analysis of One-Dimensional Isentropic Flow for Partially Ionized Argon [PDF]

open access: yes, 1967
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. I. Experimental Investigation of an Arc-Heated Supersonic Free Jet.
Witte, Arvel Benjamin
core   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Gas turbine transient performance modeling for engine flight path cycle analysis [PDF]

open access: yes, 2010
The growth in competitiveness in airline industry has called for more advanced tool to estimate the operating costs. Engine maintenance costs are an important decisionmaking element during airline fleet selection judgment.
Janikovic, Jan
core  

A Thermodynamic Analysis of Wear

open access: yes, 2001
Wear phenomena due to contact and relative motion between two solids depend on the loading conditions and material mechanical behaviours and are charaterized by a loss of materials. Particles are detached from sound solids when some criteria are satisfied at the boundaries of the solids along the contact area.
Bui, Huy Duong   +2 more
openaire   +2 more sources

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

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