Results 1 to 10 of about 160,991 (216)

Calculation of thermodynamic parameters of metals

open access: yesЛитьë и металлургия, 2021
Method of calculation of thermodynamic parameters of metals has been developed. Based on the thermodynamic parameters of the metals, it is shown that the Gibbs molar volumetric energy has a negative value.
E. I. Marukovich   +2 more
doaj   +4 more sources

The Effect of Temperature and Thermodynamic Parameters on the Ionization Constants of Some Imines Derived from Vanillin with substituted aniline

open access: yesTikrit Journal of Pure Science, 2022
This work presents a method for the preparation of imine compounds including Schiff bases derived from vanillin with aniline, o-nitroaniline, o-tolidene and o-chloroaniline.
Rawaa Daoud Sulaiman, Zaheda Ahmed Najim
doaj   +1 more source

Thermodynamic description of the Mg-O and Al-O systems [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2023
The thermodynamic properties of oxides have a considerable influence on the corrosion behavior of alloys. MgO and Al2O3 are important products in the corrosion process of Mg-Al alloys, therefore it is necessary to investigate their thermodynamic ...
Li X.-J., Liu S.-H.
doaj   +1 more source

Solvolysis Thermodynamic Parameters of Phenyl Hydrazine Hydrochloride [PDF]

open access: yesAlfarama Journal of Basic & Applied Sciences, 2021
The present work deals with studying the effect of solvent and temperature on the solvolysis process using both the pH-metric and the conductometric measurements.
Noreldin Abdolla, Farid El-Dossoki
doaj   +1 more source

A consideration of the correct calculation of thermodynamic parameters of adsorption [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
The Langmuir and Freundlich isotherm equations have been widely used for interpreting various adsorption processes. There are, however, many serious mistakes in the literature in determination or calculation of thermodynamic parameters, especially in the
SLOBODAN K. MILONJIC
doaj   +3 more sources

Activated Carbon from Fenugreek Seed: Characterization and Adsorption Properties for Dye Removal [PDF]

open access: yesIranica Journal of Energy and Environment, 2017
In this work, the preparation of activated carbons from agricultural product, the fenugreek seeds by two approaches, chemical and microwave activation methods were studied.
D. Basrur, J. Ishwara Bhat
doaj   +1 more source

Methods of incorporation of new reaction products in thermodynamic databases of cementitious systems

open access: yesRILEM Technical Letters, 2023
Strategic blending of supplementary cementitious materials (SCMs) into ordinary portland cement (OPC) helps reduce energy use and greenhouse gas emissions from concrete production.
Tongren Zhu   +3 more
doaj   +1 more source

Biosorption of Cu (II) and Zn (II) with açaí endocarp Euterpe oleracea M. in contaminated aqueous solution

open access: yesActa Scientiarum: Technology, 2016
Current analysis investigates the capacity of the açaí endocarp (Euterpe oleracea M.) as a biosorbent for the removal of Cu2+ and Zn2+ in monoelementary water solutions. The best conditions for the ion adsorption process were pH of the solution at 4.0; 8
Affonso Celso Gonçalves Junior   +5 more
doaj   +1 more source

Optical and thermodynamic properties of a rotating dyonic black hole spacetime in $${\mathcal {N}} = 2, U(1)^2$$ N = 2 , U ( 1 ) 2 gauged supergravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
The null geodesics and the distance of closest approach for photon around a rotating dyonic black hole in $${\mathcal {N}} = 2, U(1)^2$$ N = 2 , U ( 1 ) 2 gauged supergravity is studied.
Prateek Sharma   +3 more
doaj   +1 more source

Визначення параметрів двомасової теплової схеми асинхронного електродвигуна за результатами експерименту

open access: yesElektrotehnìka ta Elektroenergetika, 2012
Розглянута задача визначення параметрів спрощеної термодинамічної моделі асинхронного двигуна з урахуванням результатів експерименту. Наведені результати розрахунку нагріву обмотки статора, виконані з використанням моделі, яка пропонується.
A. M. Zuzev, V. P. Metelkov
doaj   +1 more source

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