Zero-Entropy-Production Melting Temperature of Crystals of Poly(butylene succinate) Formed at High Supercooling of the Melt

2022 ◽  
Author(s):  
Rui Zhang ◽  
Katalee Jariyavidyanont ◽  
Evgeny Zhuravlev ◽  
Christoph Schick ◽  
René Androsch
Keyword(s):  
Entropy Production ◽  
Melting Temperature ◽  
Butylene Succinate ◽  
Zero Entropy

scholarly journals Carnot Efficiency and Zero-Entropy Production Rate Do Not Guarantee Reversibility of a Process

2019 ◽  
Vol 75 (12) ◽  
pp. 948-952 ◽  
Author(s):  
Jae Sung Lee ◽  
Sang Hoon Lee ◽  
Jaegon Um ◽  
Hyunggyu Park
Keyword(s):  
Entropy Production ◽  
Production Rate ◽  
Entropy Production Rate ◽  
Zero Entropy

The reversible process: A zero‐entropy‐production limit

1996 ◽  
Vol 64 (5) ◽  
pp. 580-583 ◽  
Author(s):  
John S. Thomsen ◽  
Helene C. Bers
Keyword(s):  
Entropy Production ◽  
Reversible Process ◽  
Zero Entropy

scholarly journals The Entropy Production of Galaxies

2021 ◽  
Author(s):  
Michael C. Parker ◽  
Chris Jeynes
Keyword(s):  
Black Hole ◽  
Entropy Production ◽  
Spiral Galaxies ◽  
Lagrange Equation ◽  
Supermassive Black Hole ◽  
Virial Mass ◽  
Zero Entropy ◽  
Double Spiral ◽  
The Universe ◽  
Over Time

Double-spiral galaxies are common in the Universe. It is known that the logarithmic double spiral is a Maximum Entropy geometry and represents spiral galaxies well. It is also known that the virial mass of such a galaxy can be approximately determined from the entropy of its central supermassive black hole. But over time the black hole must accrete mass, and therefore the overall galactic entropy must increase. From the associated entropic Euler-Lagrange equation (forming the basis of the Principle of Least Exertion, and also enabling the application of Nöther’s theorem) we show that the galactic entropy production is a conserved quantity, and we derive an appropriate expression for the relativistic entropic Hamiltonian of an idealised spiral galaxy. We generalise Onsager’s celebrated expression for entropy production and demonstrate that galactic entropy production has two parts, one many orders of magnitude larger than the other, and where the smaller is comparable to the Hawking radiation of the central supermassive black hole. We conclude that galaxies cannot be isolated, since even idealised spiral galaxies have non-zero entropy production.

Compliance with Amended General Chapter USPMelting Range or Temperature

2019 ◽  
Author(s):  
Samuele Giani ◽  
Naomi M. Towers
Keyword(s):  
Melting Temperature ◽  
Reference Standards ◽  
Melting Range ◽  
Primary Reference ◽  
General Chapter ◽  
Regulation Compliance

Laboratories measuring melting temperature according to USP<741> Melting Range or Temperature, must comply with the amended calibration and adjustment requirements described in this regulation. Compliance is ensured by adjusting the instrument with secondary reference standards, traceable to USP, followed by verification of accuracy using USP primary reference standards.

INDALLOY 136

Alloy Digest ◽  
1981 ◽  
Vol 30 (5) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Melting Temperature ◽  
Eutectic Alloy ◽  
Heat Treating

Abstract INDALLOY 136 is a bismuth-base, eutectic alloy that melts at 136 F (57.8 C). It is used widely in industry because of its low melting temperature and controlled-shrinkage characteristics. It provides the scientist, engineer and technician with an easily castable material that is ready for use soon after it freezes. The alloy can be recovered easily and recycled into new uses any number of times. Among its uses are anchoring parts for machining, proof casting and low-melting solder. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on casting, heat treating, and machining. Filing Code: Bi-24. Producer or source: Indium Corporation of America.

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