Results 91 to 100 of about 3,496,599 (369)

Quantum, cyclic and particle-exchange heat engines

, 2004
Differences between the thermodynamic behavior of the three-level amplifier (a quantum heat engine based on a thermally pumped laser) and the classical Carnot cycle are usually attributed to the essentially quantum or discrete nature of the former.
Allahverdyan, Callen, Chua, Chua, Curzon, De Vos, De Vos, Feldmann, Geusic, Geva, Geva, Geva, Green, H. Linke, Hatsopoulos, Hoffmann, Humphrey, Humphrey, Humphrey, Landau, Leff, Lloyd, Miller, Nolas, Parrott, Ramsey, Ries, Scovil, Scully, Scully, Shockley, T.E. Humphrey, Würfel, Würfel   +33 more
core   +1 more source

Impact of Hot Isostatic Pressing on Microstructure Evolution and Creep Performance of Powder Bed Fusion–Laser Beam Processed CM247LC

Advanced Engineering Materials, EarlyView.
The influence of Hot Isostatic Pressing (HIP) temperature on the microstructure and creep performance of powder bed fusion–laser beam processed CM247LC superalloy is investigated. Grain growth and γ’ precipitate evolution are characterized following HIP at varying temperatures.
Ahmed Fardan, Johannes Gårdstam, Eva Oscarsson, Håkan Brodin, Eduard Hryha   +4 more
wiley   +1 more source

Performance of bioethanol and diesel fuel by thermodynamic simulation of the miller cycle in the diesel engine

Results in Engineering, 2021
The rapid growth in automotive industry and increased fuel consumption and environmental pollution, along with decrease in oil and fossil fuel resources, necessitate the adoption of new technologies to improve engine thermal efficiency and the use of ...
Ahmad Jahanbakhshi, Somayeh Karami-Boozhani, Mojtaba Yousefi, Jong Boon Ooi   +3 more
doaj  

What determines the distribution of shallow convective mass flux through cloud base?

, 2017
The distribution of cloud-base mass flux is studied using large-eddy simulations (LES) of two reference cases, one representing conditions over the tropical ocean, and another one representing mid-latitude conditions over land.
Hohenegger, Cathy, Sakradzija, Mirjana
core   +1 more source

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source

Are Conventional Thermochemical Calculations a Viable Alternative to Measurements of Vaporization Enthalpy of Azeotropes?

Molecules
The majority of the studies of vaporization enthalpy dealt with pure substances. Reports of this quantity for azeotropes were scarce despite that similar experimental methods could be applied in such measurements.
Eliza Kołodziejczyk, Wojciech Marczak
doaj   +1 more source

Thermodynamic consistency of autocatalytic cycles

Proceedings of the National Academy of Sciences
Autocatalysis is seen as a potential key player in the origin of life, and perhaps more generally in the emergence of Darwinian dynamics. Building on recent formalizations of this phenomenon, we tackle the computational challenge of exhaustively detecting minimal autocatalytic cycles (autocatalytic cores) in reaction networks and further evaluate the ...
Thomas Kosc, Denis Kuperberg, Etienne Rajon, Sylvain Charlat   +3 more
openaire   +2 more sources

Thermodynamic cycle optimization for pyroelectric energy conversion in the thin film regime

, 2017
Pyroelectric energy conversion is both simulated and realized on thin film lead zirconate titanate capacitors. The thermodynamics of the energy conversion cycle were explored, and the performance of the Brayton cycle was compared with the conventional ...
B. Hanrahan, Felisa Sze, A. Smith, Nicholas R. Jankowski   +3 more
semanticscholar   +1 more source

Deciphering the Origin of Higher Shell Coordination on Single Iron Catalysts for Resilient Modulating Persulfate Oxidation Into Singlet Oxygen Pathway

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
This study reveals that higher shell S coordination can effectively modulate the spin state of FeN4 site via long‐range electronic interactions, giving rise to the oriented generation of singlet oxygen from peroxymonosulfate activation. Abstract Precise manipulation of coordination structure of single‐atom sites and establishment of schematic ...
Liang Zhang, Kai Cheng, Zhizhi Yang, Ye Zhang, Shiro Kubuki, Paul A. Bingham, Yang‐Chun Yong, Bofan Zhang, Xiaoguang Duan   +8 more
wiley   +1 more source

On the theory of thermodynamic wave cycles [PDF]

The Journal of the Acoustical Society of America, 1975
Cyclic thermodynamic processes governing the successive dissipation and formation of acoustic waves in perfect gases are studied under adiabatic flow conditions. The cyclic heat input into the fluid is due to the frictional conversion of the kinetic energy of the wave into heat.
openaire   +2 more sources