Results 31 to 40 of about 40,153 (337)

Thermodynamic properties of L-menthol in crystalline and gaseous states

open access: yesТонкие химические технологии, 2020
Objectives. Menthol causes a cooling sensation and reduces the nerve activity when it is applied locally, ingested, or inhaled. This feature explains its extensive use as both an aromatizer and a flavoring agent in food manufacturing, tobacco industry ...
A. V. Blokhin, Ya. N. Yurkshtovich
doaj   +1 more source

Spontaneity of nuclear fusion: a qualitative analysis via classical thermodynamics [version 3; peer review: 3 approved]

open access: yesOpen Research Europe, 2021
Background: So far the feasibility of nuclear reactions has been studied only through the evaluation of the reaction rate, which gives us information about the kinetics, while the thermodynamic analysis has been limited to evaluations of the change in ...
Silvano Tosti
doaj   +1 more source

Effect of methyl groups on the thermal properties of polyesters from methyl substituted 1,4-butanediols and 4,4'-biphenyldicarboxylic acid [PDF]

open access: yes, 1995
Results are reported on the effect of lateral methyl groups on the thermal properties of a series of polyesters prepared from diethyl 4,4-biphenyldicarboxylate and various methyl substituted 1,4-butanediols.
Bantjes, Adriaan   +3 more
core   +7 more sources

Laser desorption/ionization mass spectrometry of L-thyroxine (T4) using combi-matrix of α-cyano-4-hydroxycinnamic acid (CHCA) and graphene

open access: yesJournal of Analytical Science and Technology, 2022
An optimal combi-matrix for MALDI-TOF mass spectrometry was presented for the analysis of L-thyroxine (T4) in human serum. For the selection of the optimal combi-matrix, several kinds of combi-matrices were prepared by mixing the conventional organic ...
Joo-Yoon Noh   +5 more
doaj   +1 more source

Noncontact modulation calorimetry of metallic liquids in low Earth orbit [PDF]

open access: yes, 1997
Noncontact modulation calorimetry using electromagnetic heating and radiative heat loss under ultrahigh-vacuum conditions has been applied to levitated solid, liquid, and metastable liquid samples.
Fecht, H.-J.   +3 more
core   +1 more source

New insight into the melting process of PA 6 fibers: Determining tension-induced changes of enthalpy by HTA-assisted DSC analysis

open access: yesPolymer Testing, 2023
Differential scanning calorimetry (DSC) measurements of fibers are affected from insulation effects originating from the specific specimen geometry with poor contact between the material sample and the crucible bottom.
Stefan Oberparleiter, Roman Lackner
doaj   +1 more source

PREDICTION OF PHYSICOCHEMICAL PROPERTIES BY ARTIFICIAL NEURAL NETS

open access: yesAvances en Ciencias e Ingeniería, 2023
In this study, we employed the Artificial Neural Network-Group COSMO sigma profile method to estimate critical pressure, critical temperature, enthalpy of fusion, and melting temperature of pure chemical compounds.
Arturo Alvarez, Víctor H. Alvarez
doaj  

A Computationally Efficient Multi-Scale Thermal Modelling Approach for PBF-LB/M Based on the Enthalpy Method

open access: yesMetals, 2022
Laser-Based Powder Bed Fusion is one of the most widely used additive manufacturing processes, mainly due to its high-quality output. End users would greatly benefit from a virtual simulation of the process; however, the modelling of the process is very ...
Panagiotis Stavropoulos   +4 more
doaj   +1 more source

Preliminary evaluation of the expansion system size for a pressurized gas loop: Application to a fusion reactor based on a helium-cooled blanket [PDF]

open access: yes, 2017
Some considerations to preliminarily design the size of the Expansion Volume (EV) and the relief pipes for a Vacuum Vessel Pressure Suppression System, to be adopted in a fusion reactor based on a helium cooled blanket, are presented.
CARUSO, Gianfranco, NOBILI, MATTEO
core   +1 more source

Molecular patterns in the thermophysical properties of pyridinium ionic liquids as phase change materials for energy storage in the intermediate temperature range

open access: yesJournal of Non-Crystalline Solids: X, 2022
Phase change materials (PCMs) that store and release thermal energy via a reversible phase transition in the intermediate temperature range are a promising solution for renewable energy storage as they can be durable and inexpensive.
Karolina Matuszek   +4 more
doaj   +1 more source

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