Results 41 to 50 of about 50,405 (263)

Entropies of the microcanonical ensemble

open access: yesAIP Advances, 2022
We revisit the Boltzmann entropy and the Gibbs entropy, two entropy definitions of the microcanonical ensemble, and discuss their respective weakness, incompatible with our traditional understanding of thermodynamic entropy.
Hyogeon Park, Yong Woon Kim, Juyeon Yi
doaj   +1 more source

Physicochemical properties and the molar surface Gibbs energy of the aqueous solution of amino acids ionic liquid 1-pentyl-3-methylimidazolium glycine salt [C5mim] [Gly]

open access: yesChemical Thermodynamics and Thermal Analysis, 2022
The density and surface tension for the aqueous solution of amino acids ionic liquid (AAIL) 1-pentyl-3-methylimidazolium glycinate salt [C5mim] [Gly] with various molalities were measured at T = (288.15 to 318.15) K with an interval of T = 5 K, and based
Xuelian Meng   +3 more
doaj   +1 more source

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

open access: yesAdvanced 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   +4 more
wiley   +1 more source

Study of diesel oil vaporization process

open access: yesГорные науки и технологии, 2018
Applying scientific-research findings in practice requires systematic studying characteristics, parameters, and physical and chemical properties of materials.
D. A. Sharifov   +5 more
doaj   +1 more source

Optimal Control Approach to Lambert’s Problem and Gibbs’ Method

open access: yesApplied Sciences, 2020
This paper presents the optimal control approach to solve both Lambert’s problem and Gibbs’ method, which are commonly used for preliminary orbit determination.
Minjeong Kim, Sungsu Park
doaj   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Investigation of the processes of dust processing gas cleaning of steelmaking industries

open access: yesЛитьë и металлургия, 2021
The article deals with the issues of processing of dust from electric steelmaking production by the method of thermodynamic extraction of iron, zinc and lead in order to reduce the environmental impact and increase the resource base of the industry.
S. L. Rimoshevsky   +2 more
doaj   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Current state of metal melt crystallization theory. Foundry production and metallurgy

open access: yesЛитьë и металлургия, 2022
The classical theory of crystallization of metal melts has been investigated. It is shown that it does not correspond to the second law of thermodynamics. Based on thermodynamic analysis, it was found that the classical theory of crystallization of metal
E. I. Marukovich   +2 more
doaj   +1 more source

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

open access: yesAdvanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source

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