Refine your search
Collections
Co-Authors
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Shukla, R. K.
- Comparative Study of Speed of Sound and Isentropic Compressibility of Chlorobenzene+Benzene Binary Mixture From Various Models at Temperature Range 298.15 to 313.15 K
Abstract Views :176 |
PDF Views:0
Authors
Affiliations
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, IN
2 Singhania University, Jhunjhunu, Rajasthan, IN
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, IN
2 Singhania University, Jhunjhunu, Rajasthan, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 35, No 2-3 (2013), Pagination: 80-86Abstract
Densities and speed of sound were measured for the binary liquid mixtures formed by Chlorobenzene with Benzene at 298.15, 303.15, 308.15 and 313.15 K and atmospheric pressure over the whole concentration range. Prigogine-Flory-Patterson model (PFP), Ramaswamy and Anbananthan (RS) model and model suggested by Glinski, were utilized to predict the associational behavior of weakly interacting liquids. The measured properties were fitted to Redlich-Kister polynomial relation to estimate the binary coefficients and standard errors. An attempt has also been made to study the molecular interactions involved in the liquid mixture from observed data. Furthermore, McAllister multi body interaction model was also used to correlate the binary properties. These non-associated and associated models were compared and tested for different systems showing that the associated process yield fair agreement between theory and experiment as compared to non-associated process.Keywords
Speed of Sound, Prigogine-Flory-Patterson Model, McAllister Model, Ramaswamy and Anbananthan Model, Isentropic Compressibility and Redlich-Kister Polynomial.Full Text
- Thermo-Acoustical and Allied Properties of NMA, DMF and DMA Binary Systems
Abstract Views :135 |
PDF Views:0
Authors
Affiliations
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, IN
2 Department of Basic Sciences, S.I.R.T. Excellence, Bhopal-462041, IN
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, IN
2 Department of Basic Sciences, S.I.R.T. Excellence, Bhopal-462041, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 35, No 1 (2013), Pagination: 35-43Abstract
Densities and speed of sound were measured for the binary liquid mixtures formed by formamide, N-methylacetamide, di-methylformamide and di-methylacetamide with acetonitrile at 293.15, 298.15, 303.15, 308.15 and 313.15 K and atmospheric pressure over the whole concentration range. Prigogine-Flory-Patterson model (PFP), Ramaswamy and Anbananthan (RS) model and model derived by Glinski, were utilized to predict the associational behavior of weakly interacting liquids. The measured properties were fitted to Redlich-Kister polynomial relation to estimate the binary coefficients and standard errors. An attempt has also been made to study the molecular interactions involved in the liquid mixture from observed data. Furthermore, McAllister multi body interaction model was also used to correlate the binary properties. These non-associated and associated models were compared and tested for different systems showing that the associated processes yield fair agreement between theory and experiment as compared to non-associated processes.Keywords
Ultrasonic Velocity, Prigogine-Flory-Patterson, McAllister, Ramaswamy and Anbananthan, Isentropic Compressibility and Redlich-Kister.Full Text
- Modeling of Oceanic Ambient Noise at High Frequencies Off Southwest Coast of India
Abstract Views :156 |
PDF Views:0
Authors
Affiliations
1 Naval Physical & Oceanographic Laboratory, Kochi-682021, IN
1 Naval Physical & Oceanographic Laboratory, Kochi-682021, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 31, No 4 (2009), Pagination: 138-141Abstract
The dominant sources of natural oceanic noise are often due to events occurring at the sea/air interface. Generally field measurements are limited by the response function of the sensors used, such as the spectral bandwidth and sensitivity of the hydrophones, the array beam pattern, and angular resolution. An ambient noise model (based on the ray theory), has been utilised to compute the eigen ray structures for the circular surface point sources. Wind generated surface noise, source levels have been computed empirically. In the present study, an ambient noise model along with transmission loss (TL) model is used to compute the ambient noise at sub-surface depths. Initially for given frequency range (>10KHz) and wind speed, surface ambient noise is computed. This surface ambient noise values are given to TL model to compute ambient noise at sub-surface depths. In the above survey vertical profiles of temperature and salinity along with wind speed were collected from five zonal transects normal to the coast, separated by 30 nautical miles. The environmental conditions are different from transect one to transect three.Keywords
Modeling, Oceanic Ambient Noise, Transmission Loss.Full Text
- Effect of Molecular Structure of Lubricating Oil on Sound Velocity and Bulk Modulus
Abstract Views :182 |
PDF Views:1
Authors
Affiliations
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, IN
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 40, No 4 (2018), Pagination: 111-115Abstract
Theoretical computation of sound velocity and their bulk modulus for many lubricating oils having various applications in machinery and daily lives at different ranges of temperature over the entire concentration range has been done from the measured data of Mia and Ohno. An attempt has also been envisaged to predict the molecular interactions and molecular structure involved therein and also to establish relationship among sound velocity, surface tension, adiabatic compressibility and their bulk modulus. It is found that theoretical results for sound velocity agreed well within the experimental precision when compared with experimental data. These properties are helpful in predicting the group of the lubricating oil of which they belong.
Keywords
Lubricating Oil, Surface Tension, Sound Velocity, Bulk Modulus, Molecular Interactions.Full Text
References
- Wills J.G., Lubrication Fundamentals, Marcel Dekker, New York (1980) 241.
- Winer W.O., Lubricants, Tribological Technology Volume II, Senholzi, P.B., Eds., Martinus Mijhoff Publishers, The Hegue, (1982), 407-467.
- Bhushan B., Tribology and mechanics of magnetic storage devices, Springer, New York. (1990), 48-52.
- Jones W.R. Jr., Properties of perfluoropolyethers for space applications, Tribol. T. 38 (1995), 557-564.
- Liang J.C. and Helmick L.S., Tribochemistry of a PFPAE fluid on M-50 surfaces by FTIR spectroscopy, Tribol. T. 39 (1996), 705-709.
- Keck P.H. and Horn W.V., The Surface tension of liquid silicon and germanium, Phys. Rev. 91 (1953), 512-513.
- Macleod D.B., On a relation between surface tension and density, T. Farady Soc. 19 (1923), 38-41.
- Auerbach N., Surface tension and speed of sound, Experienti. 4 (1948), 473-374.
- Mia S. and Ohno N., Prediction of pressure-viscosity coefficient of lubricating oils based on sound velocity, Lubr. Sci. 21 (2009), 343- 354.
- Laplace P.S., On the velocity of sound through air and water, Ann. Chim. (Rome) 3 (1816), 238-241.
- Wood A.B., A Text book of sound, Third Ed., Bell and Sons, London (1964).
- Kagathara V.M. and Parsania P.H., Sound velocity and thermodynamic parameters of chloro epoxy resins of bisphenol-C solutions in chlorinated and aprotic solvents at 35°C and 40°C, Eur. Polym. J. 37 (2001), 1373-1377.
- Bhushan B., Principles and Applications of Tribology, John Wiley & Sons, New York, (1999).
- Acoustic and Refractive Behaviour of the Binary Mixture of 1-butyl-3 Methylimidazolium Tetrafluoroborate with 1-Alkanol at 298.15 to 313.15k
Abstract Views :279 |
PDF Views:0
Authors
Affiliations
1 Department of Chemistry, V.S.S.D. College, Kanpur-208 002, IN
1 Department of Chemistry, V.S.S.D. College, Kanpur-208 002, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 42, No 3 (2020), Pagination: 72-77Abstract
Densities, refractive indices and speeds of sound and their excess properties for 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim][BF4] with 1-pentanol over the entire range of mole fraction are reported at temperatures ranging from 298.15 K to 313.15 K and atmospheric pressure. Isentropic and excess isentropic compressibility for ionic liquids with 1-alcohols were calculated from the experimental results. The excess values are fitted to the Redlich-Kister polynomial equation to estimate the binary coefficients and standard error between the experimental and calculated values. The measured speeds of sound were compared to the values obtained from Schaaffs' collision factor theory, Jacobson's intermolecular free length theory of solutions and Nomoto's relation. In addition, the experimentally obtained refractive indices were compared to the calculated values using Lorentz- Lorenz, Dale-Gladstone and Eykman mixing rules. The theoretical results obtained from these relations fairly agrees within the experimental precision. Further, the molecular interactions involved in IL binary mixture system were studied.Keywords
Density, Refractive Index, Speed Of Sound, Ionic Liquids, Binary Mixture.Full Text
References
- Shekaari H. and Sedighehnaz S.M., Volumetric properties of ionic liquid 1,3-dimethyl imidazolium methyl sulfate + molecular solvents at T =(298.15-328.15) K, Fluid Phase Equilib. 291 (2010) 201-207.
- Wang J-Y., Zhao F-Y., Liu Y.M., Wang X-L. and Hu Y-Q., Thermo physical properties of pure 1-ethyl-3-methylimidazolium methyl sulphate and its binary mixtures with alcohols, Fluid Phase Equilib. 305 (2011) 114-120.
- Requejo P.F., Gonzalez E.J., Macedo E.A. and Dominguez A.J., Effect of the temperature on the physical properties of the pure ionic liquid 1-ethyl-3-methyl-imidazolium methyl sulfate and characterization of its binary mixtures with alcohols, Chem. Thermodyn. 74 (2014) 193-200.
- Pereiro A.B. and Rodiguez A., Thermodynamic properties of ionic liquids in organic solvents from (293.15 to 303.15) K, J. Chem. Eng. Data 52 (2007) 600-608.
- Domanska U., Pobudkowska A. and Wisniewska A., Solubility and excess molar properties of 1,3-dimethylimidazolium methyl sulfate, or 1-butyl-3-methylimidazolium methyl sulfate, or 1-butyl-3-methylimidazolium octylsulfate ionic liquids with n-alkanes and alcohols: analysis in terms of the PFP and FBT models1, J. Solution Chem. 35 (2006) 311- 334.
- Shukla R.K., Gangwar V.S. and Singh S.K., Effect of molecular structure of lubricating oil on sound velocity and bulk modulus, J. Pure Appl. Ultrason, 40 (4) (2018) 111-115.
- Shukla Rajeev Kumar., Gangwar V.S. and Pundhir Vivek Kumar., Density and speed of sound of binary liquid systems in temperature range 288.15 to 318.15 K, J. Pure Appl. Ultrason, 39 (2017) 18-22.
- Shukla R.K., Gupta G.K., Pramanik S.K., Sharma A.K. and Singh B., Comparative study of speed of sound and isentropic compressibility of chloroben-zene + benzene binary mixture from various models at temperature range 298.15 to 313.15 K, J. Pure Appl. Ultrason, 35 (2013) 80-86.
- Redlich O. and Kister A.T., Algebraic representation of thermodynamic properties and the classification of solutions, Ind. Eng. Chem. 40 (1948) 345-348.
- Schaffs W., Molecular Acoustics/Molekularakustik Springer-Verlag, Berlin 1963, (Chapters. XI and XII).
- Jacobson B., Intermolecular free length in the liquid state. Adiabatic and isothermal compressibilities, Acta. Chem.Scand. 8 (1952) 1485-1498.
- Jacobson B., Ultrasonic velocity in liquids and liquid mixtures, J. Chem. Phys. 20 (1952) 927-928.
- Nomoto O., Empirical formula for sound velocity in liquid mixtures, J. Phys. Soc. Jpn. 13 (1958) 1528-1532.
- Lorentz L. and Lorenz, L.V., Ueber die Refraktion Konstante, Wied. Ann. 11 (1880) 70-75.
- Gladstone J.H. and Dale T.P., Researches on the refraction and dispersion and sensitiveness of liquid, Philos. Trans. 153 (1863) 317-343.
- Eykman J.F., Reel. Trao. Recherches réfracto métriques (suite), Chim Pays-Bas. 14 (1895) 185-188.
- Timmermans J., Physico- chemical constants of pure organic compounds, 8th Ed., Elsevier Pub. Corp. Inc., New York (1950).
- Riddick J.A., Bunger W.S. and Sakano T., organic solvents, physical properties and methods of purification, 4th ed, Johnwiley and Sons Press., New York (1986).
- Letcher T.M., Domanska U. and Mwenesongole E., The excess molar volumes and enthalpies of (N-methyl-2-pyrrolidinone + an alcohol) at T = 298.15 K and the application of the ERAS theory, Fluid Phase Equilib. 149 (1998) 323- 337.
- Benson G.C. and Kiyohara O., Evaluation of excess isentropic compressibilities and isochoric heat capacities, J. Chem. Thermodyn. 11 (1979) 1061-1064.
- Al Tuwaim M.S., Alkhaldi K.H.A.E., Al-Jimaz A.S. and Mohammad A.A., Temperature dependence of physicochemical properties of imidazolium-, pyroldinium- and phosphonium-based ionic liquids, J. Chem. Eng. Data. 59 (2014) 1955-1963.