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Wyszukujesz frazę "Alamelumangai, G." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Ultrasonic study of molecular interaction in binary liquid mixtures of n-hexane with alcohols
Autorzy:
Santhi, N.
Sabarathinam, P.
Alamelumangai, G.
Madhumitha, J.
Emayavaramban, M.
Powiązania:
https://bibliotekanauki.pl/articles/411698.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
alkohol
parametry akustyczne
mieszaniny
n-heksan
n-hexane
alcohol
acoustical parameters
mixtures
Opis:
Ultrasonic velocity, viscosity and density of alcohol[s] in n-hexane have been measured AT various temperatures in the range of 303.15 - 318.15K. From the experimental data, the acoustical parameters such as molar volume, adiabatic compressibility, intermolecular free length and their excess values have been computed and presented as functions of compositions. The deviations from ideality of the acoustical parameters are explained on the basis of molecular interactions between the components of the mixtures. The variations of these parameters with composition of the mixture suggest the strength of interactions in these mixtures.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 5; 59-71
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical Evaluation of Ultrasonic Velocity in Binary Liquid Mixtures of Alcohols [S] + Benzene
Autorzy:
Santhi, N.
Sabarathinam, P. L.
Madhumitha, J.
Alamelumangai, G.
Emayavaramban, M.
Powiązania:
https://bibliotekanauki.pl/articles/411951.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
alcohols
benzene
sound
mixtures
NR
IMR
FLT
CFT
Opis:
Ultrasonic velocities and densities of the binary liquid mixtures of benzene with 1-propanol, 2-propanol, 1-butanol, 2-butanol and 3-butanol at 303.15 to 318.15 K, over the entire composition range were measured. The theoretical values of ultrasonic velocity were evaluated using the Nomoto’s Relation (NR), Ideal Mixture Relation (IMR), Free Length Theory (FLT) and Collision Factor Theory (CFT). The validity of these relations and theories were tested by comparing the computed sound velocities with experimental values. Further, the molecular interaction parameter (á) was computed by using the experimental and the theoretical ultrasonic velocity values. The variation of this parameter with composition of the mixtures has been discussed in terms of molecular interaction in these mixtures.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 2; 18-35
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical evaluation of internal pressure in ternary and sub-binary liquid mixtures at various temperatures
Autorzy:
Madhumitha, J.
Santhi, N.
Alamelumangai, G.
Emayavaramban, M.
Powiązania:
https://bibliotekanauki.pl/articles/411846.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
mieszanki ciekłe trójskładnikowe
benzen
heksan
alkohol sec-butylowy
ternary liquid mixtures
sub-binary liquid mixtures
benzene
hexane
sec-butyl alcohol
Opis:
The Internal pressures of Ternary and their sub-Binary liquid mixtures of benzene(1) + hexane(2) + sec-butyl alcohol(3) were calculated using density, velocity and molar refraction from the temperature range of 303.15K-318.15K. For the Binary liquid mixtures, the Experimental Internal pressure values were correlated through an equation proposed by Andiappan et.al. For the Ternary liquid mixture, the Experimental Internal pressure values were correlated through an equation proposed by us. The Experimental values and the Theoretical values are in close agrement with each other.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 4; 82-95
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of internal pressure of liquids and liquid mixtures
Autorzy:
Santhi, N.
Sabarathinam, P.
Alamelumangai, G.
Madhumitha, J.
Emayavaramban, M.
Powiązania:
https://bibliotekanauki.pl/articles/411696.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ciśnienie cieczy
teoria Jacobsona
pojemność cieczy
równanie Srivastava i Berkowitza
van der Waals
pressure of liquids
theory of Jacobson
capacity of heat liquids
equation of Srivastava and Berkowitz
Opis:
By combining the van der Waals' equation of state and the Free Length Theory of Jacobson, a new theoretical model is developed for the prediction of internal pressure of pure liquids and liquid mixtures. It requires only the molar volume data in addition to the ratio of heat capacities and critical temperature. The proposed model is simple, reliably accurate and capable of predicting internal pressure of pure liquids with an average absolute deviation of 4.24% in the predicted internal pressure values compared to those given in literature. The average absolute deviation in the predicted internal pressure values through the proposed model for the five binary liquid mixtures tested varies from 0.29% to 1.9% when compared to those of literature values.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 5; 1-7
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustical studies on binary liquid mixtures of some 1,3,4-oxadiazole derivatives with acetone at 303.15 K
Autorzy:
Alamelumangai, G.
Santhi, N.
Powiązania:
https://bibliotekanauki.pl/articles/411889.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Acoustical properties
hydrogen bonding
binary mixtures
Opis:
The wide spread use of 1,3,4-oxadiazoles as a scaffold in medicinal chemistry establishes this moiety as an important bioactive class of heterocycles. In the present study ultrasonic velocity (u), density (ρ) and viscosity (η) have been measured at frequency 2 MHz in the binary mixtures of 1,3,4-oxadiazole derivatives in acetone at 303.15 K using ultrasonic interferometer technique. The measured value of ultrasonic velocity, density and viscosity have been used to estimate the acoustical parameters namely adiabatic compressibility (βad), relaxation time (τ), acoustic impedance (Zi), free length (Lf), free volume (Vf) and internal pressure (πi), with a view to investigate the nature and strength of molecular interactions. The obtained result support the occurrence of molecular association through hydrogen bonding in the binary liquid mixtures.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 5; 124-133
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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