Editorial Material
Chemistry, Physical
Tong-wei Zhang, Yong-zheng Liu, Yong-xiang Li, Zi-yang Li
Summary: Errors were found in the thermodynamics-related characteristics listed by Zheng and colleagues, with inconsistencies and failure to abide by the thermodynamics-related association of Delta G = Delta H - T Delta S reported in Table 5.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Editorial Material
Chemistry, Physical
Yong-zheng Liu
Summary: The thermodynamics-related characteristics reported by Ren and colleagues were found to be inconsistent and not in accordance with the expected thermodynamic laws. Additionally, the molar entropy did not follow the thermodynamic law of S = - (partial derivative G/partial derivative T)(P).
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Thermodynamics
Sarah N. Elliott, Kevin B. Moore, Andreas V. Copan, Yuri Georgievskii, Murat Keceli, Kieran P. Somers, Manik K. Ghosh, Henry J. Curran, Stephen J. Klippenstein
Summary: This article evaluates the thermodynamic properties of various species in a set of fuels using advanced computational schemes. It finds that the thermochemistry of the main species strongly affects key combustion properties and highlights significant uncertainties in current estimates. The proposed computational procedure, STAR-1D, shows promising accuracy and provides a reliable database for optimizing combustion systems.
COMBUSTION AND FLAME
(2023)
Article
Biochemistry & Molecular Biology
Nikolay N. Khechinashvili, Maxim S. Kondratyev, Robert Polozov
Summary: The temperature dependence of the partial heat capacity of the native protein structure in an aqueous solution has been analyzed. It is shown that the strictly linear temperature dependence is due to the contributions of the vibrational and conformational components, indicating volume consistency and the absence of conformational transitions up to the main two-state transition. The two-level structural and functional organization of the protein three-dimensional structure are considered in relation to energy and conformational entropy properties in accordance with the principles of protein macromolecule organization.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Materials Science, Multidisciplinary
Jason L. Baker, Josh T. White, Aiping Chen, Tasheima Ulrich, Robert R. Roback, Hongwu Xu
Summary: This study investigated the low-temperature heat capacity of U3Si5 intermetallic compound, observing an enhancement in heat capacity at low temperatures attributed to potential spin-fluctuations. Several thermodynamic parameters were determined based on the experimental data.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Construction & Building Technology
K. -D. Grevel, F. Bellmann, J. Majzlan, E. Dachs, A. Benisek, H. -M. Ludwig
Summary: The study investigated the crystalline phases of Ca2SiO4 in Portland cement clinker through calorimetry, recording and comparing low-temperature heat capacity data. Recommended values for beta-C2S and gamma-C2S were obtained.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Chemistry, Physical
E. S. Eyube, C. A. Onate, E. Omugbe, C. M. Nwabueze
Summary: Using the improved generalized Po center dot schl-Teller oscillator, analytical equations for predicting molar Gibbs free energy and specific heat capacity at constant pressure were obtained. These equations were applied to diatomic molecules and yielded results in good agreement with experimental data.
Article
Chemistry, Physical
Mikhail I. Yagofarov, Boris N. Solomonov
Summary: It has been discovered that there is a correlation between the Gibbs energies and enthalpies of processes such as solvation and vaporization, known as the compensation relationship. Recent research has revealed that this correlation is divided into two linear relationships with different slopes for aromatic and long-chain aliphatic compounds. Additionally, there is also a correlation between the heat capacities of the liquid and ideal gas, and the vaporization enthalpy at 298.15 K. Similar to the compensation relationship, this correlation also varies for aromatic and aliphatic compounds. The goal of this study was to determine the factors influencing the coefficients of the Gibbs energy-enthalpy correlation and understand their characteristics.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Food Science & Technology
Israel Emiezi Agarry, Zhirong Wang, Tian Cai, Zhulian Wu, Jianquan Kan, Kewei Chen
Summary: This study fabricated chlorophyll-loaded nano/microparticles using different protein carriers and found that these particles could effectively protect chlorophyll from acid pH and light conditions.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Anatoly S. Arkhipin, Alexander Pisch, Georgii M. Zhomin, Semen V. Kuzovchikov, Alexandra V. Khvan, Natalia N. Smirnova, Alexey V. Markin, Nikita A. Kovalenko, Irina A. Uspenskaya
Summary: This study investigated the thermodynamic properties of a Ca12Al14O33 (C12A7) binary glass and the effects of titania additions (+5 and 7 wt%). Three different calorimetric techniques were used: low-temperature adiabatic, high-temperature drop solution, and transposed temperature drop calorimetry. The enthalpy of formation from oxides at 298.15 K and the enthalpy of dissolution of TiO2 (rut) at 1073.15 K were determined. The results showed that TiO2 additions had no influence on the heat capacity of C12A7, but caused a negative deviation of the enthalpy of formation from oxides.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Biochemistry & Molecular Biology
Yun-Hao Chou, Chia-Lin Hsieh, Yan-Liang Chen, Tzu-Pin Wang, Wen-Jeng Wu, Chi-Ching Hwang
Summary: The stability of 3 alpha-hydroxysteroid dehydrogenase/carbonyl reductase (3 alpha-HSD/CR) was characterized by measuring changes in Gibbs free energy, enthalpy, entropy, and heat capacity of unfolding at varying pH and urea concentration using differential scanning fluorimetry. The pH-dependent protein stability as a function of temperature was determined, with maximum stability observed at pH 7.6 and decreasing stability at pH 4.5. The study also revealed the mechanism of protein unfolding in HSD and provided a convenient method to extract thermodynamic parameters for characterizing protein stability using differential scanning fluorimetry.
Article
Physics, Multidisciplinary
E. S. Eyube, P. P. Notani, G. G. Nyam, Y. Y. Jabil, M. M. Izam
Summary: In this study, the reparameterized Scarf II oscillator was used to describe the internal vibration of diatomic systems. Analytical equations for bound state pure vibrational energies and canonical partition function were derived. These equations were then used to predict the thermodynamic properties of gaseous substances, including molar entropy, enthalpy, Gibbs free energy, and constant pressure heat capacity. The results were in good agreement with available literature data and could be applicable in various fields including molecular physics, chemical physics, solid-state physics, and chemical engineering.
FRONTIERS IN PHYSICS
(2023)
Article
Thermodynamics
Maxim Lelet, Dmitry A. Mikhailov, Denis Lyakaev, Julia N. Lelet, Diana G. Fukina
Summary: A calorimetric and thermodynamic investigation was conducted on strontium-substituted fluorapatite, with the synthetic product characterized using various techniques and relevant data on enthalpy, heat capacity, and entropy determined. Analysis of the thermodynamic stability of cation-substituted fluorapatites, including strontium, based on literature and experimental data was also performed.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2022)
Article
Engineering, Environmental
Ulrich Legrand, Juan Ricardo Castillo Sanchez, Richard Boudreault, Jean-Luc Meunier, Pierre-LucGirard Lauriault, Jason Robert Tavares
Summary: This study assessed and compared the thermodynamic properties of different sorbents and found that carbon-based sorbents and MOFs had lower sorbent-adsorbate interactions and were suitable for adsorption steps with less heat release. NPS and Cr-MIL-101 showed entropic advantages for water recovery/removal. The results highlight the importance of enthalpy and entropy in selecting favorable conditions for adsorption-desorption cycles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Marko Popovic, Vojin Tadic, Marija Mihailovic
Summary: This paper reports the chemical and biothermodynamic properties of insulin biosynthesis, including the molecular and empirical formulas, biosynthesis reactions, and thermodynamic properties of multiple components of insulin. Metabolic reactions for converting preproinsulin to insulin and their thermodynamic feasibility were also analyzed.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
