Results 71 to 80 of about 55,344 (239)
Attaining Carnot efficiency with quantum and nanoscale heat engines
npj Quantum Information, 2021 A heat engine operating in the one-shot finite-size regime, where systems composed of a small number of quantum particles interact with hot and cold baths and are restricted to one-shot measurements, delivers fluctuating work.
Mohit Lal Bera +2 more
doaj +1 more source
Linear irreversible heat engines based on the local equilibrium assumptions [PDF]
, 2015 We formulate an endoreversible finite-time Carnot cycle model based on the assumptions of local equilibrium and constant energy flux, where the efficiency and the power are expressed in terms of the thermodynamic variables of the working substance.
Izumida, Yuki, Okuda, Koji
core +2 more sources
A Comprehensive Review of Intramolecular Hydrosilylation of Alkynes and Alkenes
ChemCatChem, EarlyView.Intramolecular hydrosilylation is a powerful method for alkenes or alkynes functionalization, and provides easy access to silylated heterocycles. The reaction involves the addition of an Si─H bond to a C─C double or triple bond, usually in the presence of a metal catalyst. This review explores the developments in this methodology, as well as the regio‐
Mathias Reboli, Muriel Durandetti
wiley +1 more source
One-Particle Representation of Heat Conduction Described within the Scope of the Second Law. [PDF]
PLoS ONE, 2016 The Carnot cycle and its deduction of maximum conversion efficiency of heat inputted and outputted isothermally at different temperatures necessitated the construction of isothermal and adiabatic pathways within the cycle that were mechanically ...
Christopher Gunaseelan Jesudason
doaj +1 more source
Chemistry – A European Journal, Accepted Article.Substituted azetidines are privileged heterocyclic scaffolds in medicinal chemistry and have become synthetic targets of high interest in recent years. With the goal of developing a new access to azetidines incorporating the pharmaceutically relevant trifluoromethyl group, the reactivity of 2‐(trifluoromethyl)‐1‐azabicyclo[1.1.0]butanes was ...
Christophe Meyer +7 more
wiley +1 more source
Case Studies in Thermal Engineering, 2022 In this study, the ideal cycles with finite heat capacity rates is investigated theoretically to maximize power generation using a sequential Carnot cycle model.
Soyeon Kim, Young-Jin Baik, Minsung Kim
doaj
ChemSusChem, Accepted Article.Phase Change Materials (PCMs) with melting temperatures in the intermediate range (100–220 °C) have recently been in high demand for applications in solar and wind renewable energy storage. Such materials can help advance thermal battery technologies, such as Carnot batteries, that can reduce the amount of fossil fuels used to generate electricity ...
Karolina Matuszek +4 more
wiley +1 more source
Exploring Low‐Global Warming Potential Refrigerants for Medium‐Charge Systems
Energy Technology, EarlyView.This study evaluates 15 low‐global warming potential (GWP) refrigerants as alternatives for medium‐charge systems, focusing on environmental impacts, operational performance, and system design integration. Key findings reveal R‐447A's suitability for standard climates and R‐454B's advantages in high ambient conditions, providing actionable guidance for
Fadi Alsouda +3 more
wiley +1 more source
Mass Spectrometry Reviews, EarlyView.ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase +5 more
wiley +1 more source
Where Mathematical Symbols Come From
Topics in Cognitive Science, EarlyView.Abstract There is a sense in which the symbols used in mathematical expressions and formulas are arbitrary. After all, arithmetic would be no different if we would replace the symbols ‘+$+$’ or ‘8’ by different symbols. Nevertheless, the shape of many mathematical symbols is in fact well motivated in practice.
Dirk Schlimm
wiley +1 more source