Autor: Narendra, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study on thermodynamic properties of binary mixtures of diethyl carbonate with benzonitrile, benzaldehyde at different temperatures
Autorzy:: Sudhamsa, B.
Babu, M. S.
Narendra, K.
Powiązania:: https://bibliotekanauki.pl/articles/411534.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: binary mixtures
excess adiabatic compressibility
excess free length
excess speed of sound
Opis:: The speed of sound and density in binary liquid mixture of diethyl carbonate + benzonitrile, + benzaldehyde have been determined at temperatures 298.15, 308.15 and 318.15 K over the whole composition range. The data have been utilized to estimate the excess adiabatic compressibility (β^E), excess intermolecular free length (L_{f _E), excess speed of sound (u^E) at the above temperatures. The excess values have been found to be useful in estimating the strength of the interactions in the liquid mixtures.}
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 19, 1; 1-7
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: A Ratio-Cum-Product Estimator of Finite Population Mean in Systematic Sampling
Autorzy:: Tailor, Rajesh
Jatwa, Narendra K.
Singh, Housila P.
Powiązania:: https://bibliotekanauki.pl/articles/465754.pdf
Data publikacji:: 2014
Wydawca:: Główny Urząd Statystyczny
Tematy:: systematic sampling ratio-cum-product estimator
bias
mean squared error
Opis:: In this paper we consider the problem of estimation of population mean using information on two auxiliary variables in systematic sampling. We have extended Singh (1967) estimator for estimation of population mean in systematic sampling. We have derived the expressions for the bias and mean squared error of the suggested estimator up to the first degree of approximation. We have compared the suggested estimator with existing estimators and obtained the conditions under which the suggested estimator is more efficient. An empirical study has been carried out to demonstrate the performance of the suggested estimator.
Źródło:: Statistics in Transition new series; 2014, 15, 3; 391-398
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Study of acoustical parameters in binary liquid mixture containing 1-butanol and hexane at temperatures 313.15 K, 318.15 K and 323.15 K
Autorzy:: Srinivasu, C. H.
Kumar, A. K.
Fakruddin, S. K.
Narendra, K.
Anjaneyulu, T.
Powiązania:: https://bibliotekanauki.pl/articles/412551.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: density
ultrasonic velocity
viscosity
1-butanol
hexane
adiabatic compressibility
free length and molar volume
Opis:: The values of ultrasonic velocity (u), density (ρ), and viscosity (η) have been measured experimentally in the binary liquid mixture containing 1-butanol and hexane over the entire range of composition at different temperatures 313.15 K, 318.15 K and 323.15 K. This experimental data have been used to calculate the acoustical parameters such as adiabatic compressibility (β), free length (Lf), molar volume (Vm) and acoustic impedance(z). The results have been qualitatively used to explain the molecular interactions between the components of the liquid mixture.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 13; 1-7
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Theoretical ultrasonic velocities in binary liquid mixture containing aniline and anisole at different temperatures – a comparative study
Autorzy:: Sreedevi, Y.
Srinivasu, Ch.
Fakruddin, Sk.
Narendra, K.
Venkateswara Rao, B.R.
Nirmal Rajeev, Y.
Powiązania:: https://bibliotekanauki.pl/articles/412398.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: ultrasonic velocity
aniline
anisole
binary liquid mixtures
Opis:: Ultrasonic velocity is measured experimentally at 3MHz frequency in the binary liquid mixture containing aniline and anisole at different temperatures over the entire composition range and theoretical values of ultrasonic velocity have been evaluated by using Nomoto’s relation, Impedance relation, Van Dael ideal mixture relation. These theoretical values are compared with the experimental values. A good agreement has been found between experimental and theoretical ultrasonic velocities.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 7, 2; 120-124
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Studies of densities, viscosities and ultrasonic speeds of binary mixtures containing isopropyl alcohol and ketones at different temperatures
Autorzy:: Srinivas, S. S. J.
Tulasi Koteswari Bai, B.
Babu Rao, K.
Narendra, K.
Sarath Babu, M.
Powiązania:: https://bibliotekanauki.pl/articles/412144.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: ultrasonic velocity
density
viscosity
acoustic parameters
Opis:: The densities, viscosities and ultrasonic velocities of binary liquid mixtures of Isopropyl alcohol with acetophenone and methyl isobutyl ketone (MIBK) have been measured at temperatures 298.15 and 308.15 K over the entire range of mole fraction. From these data, acoustical parameters such as adiabatic compressibility (β), free volume (Vf) and free length (Lf) have been estimated using the standard relations. The results are interpreted in terms of molecular interactions present in the mixtures.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 10, 2; 151-158
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja