Publications

 

Publications in International Journals
  1. R. S. Mikhail and G. A. Oweimreen : Surface Area and Pore Structure of Low  porosity Cement Pastes,  Cement and Concrete Research, 3, 561 (1973).
  2. D. E. Martire, G. A. Oweimreen, G. I. Agren, S. B. Ryan and H. T. Peterson : The effect of Quasispherical Solutes on the Nematic-to-Isotropic Transition in Liquid Crystals.  The Journal of Chemical Physics, 64, 1456 (1976).
  3. G. A. Oweimreen, G. C. Lin and D. E. Martire : Thermodynamics of Solutions  with Liquid Crystal Solvents.   9, Gas Liquid Chromatographic Study of Nonmesomorphic Solutes in Nematic and Isotropic N-(p-Methoxybenzylidene)-p’-n-Butylaniline and p-n-Pentyl-p’-Cyanobiphenyl, The Journal of Physical Chemistry, 83, 2111 (1979).
  4. G. A. Oweimreen and D. E. Martire :  The Effect of Quasispherical and Chain-like Solutes on the Nematic-to-Isotropic Phase Transition in Liquid Crystals,  The Journal of Chemical Physics, 72(4), 2500  (1980).
  5. G. A. Oweimreen : Thermodynamics of Solution of Various Nonmesomorphic Solutes in the Nematic and Isotropic Phases of 7CB, Molecular Crystals and Liquid Crystals, 68, 257 (1981).
  6. J. F.  Galobardes, G. A. Oweimreen and L. B. Rogers : In Situ Preconcentration Procedure for Determining the Sodium Ion Concentration in Dry Steam, Analytical Chemistry, 53, 1043 (1981).
  7. G. A. Oweimreen : Thermodynamic Data for Nonmesomorphic Solutes at Infinite Dilution in the Nematic and Isotropic Phases of Hexylcyanobiphenyl, Journal of  Solution Chemistry, 11(2), 105 (1982).
  8. G. A. Oweimreen and M. Hasan : The Effect of Quasispherical Solutes on the Nematic-to-Isotropic Transition in 7CB,  Molecular Crystals and Liquid Crystals, 100, 357 (1983).  
  9. J. R. Conder, N. K. Ibrahim, G. R. Rees and G. A. Oweimreen : Wetting Transition in  Squalane on a Silanized Diatomaceous Gas Chromatographic Support, The Journal of Physical Chemistry, 89, 2571 (1985).
  10. G. A. Oweimreen, A. K. Shihab, K. Halhouli and S. F. Sikander : Density Measurements in the Nematic and Isotropic Phases of 5CB and Dilute Solutions of Tetraethylmethane in 5CB,  Molecular Crystals and Liquid Crystals, 138, 327 (1986).
  11. G. A. Oweimreen : Infinite Dilution Partition Coefficients for Haloalkane  Solutes in Squalane - Dinonyl Phthalate Solvent Mixtures at 30.0oC, Journal of Chemical and Engineering Data, 31, 160 (1986).
  12. G. A. Oweimreen and J. S. Hwang : The Nematic - Isotropic two Phase Region in Mixtures of Quasispherical Solutes in Alkylcyanobiphenyls : An ESR Study Using Tempone as Probe,  Liquid Crystals, 5(2), 585 (1989).
  13. G. A. Oweimreen, Y. T. Al-Janabi and F. Y. Al-Hauwaj : Infinite Dilution Partition and Activity Coefficients for Alkanes and Bromo- and Chloroalkanes in Squalene-Dinonyl Phthalate Mixtures at 30.0oC, Journal of Chemical and Engineering Data, 35, 219 (1990).
  14. Samir Ghodbane, Ghassan A. Oweimreen and Daniel E. Martire: Thermodynamics of Solutions of Nonmesomorphic Solutes at Infinite Dilution in the Smectic A, Nematic and Isotropic Phases of p-n-Octyl-p’-Cyanobiphenyl: A Gas Chromatographic Study, Journal of Chromatography, 556, 317 (1991).
  15. Ghassan A. Oweimreen and Abdul-Karim I. Shihab : Thermodynamic Studies for Infinitely Dilute Solutions of Nonmesomorphic Solutes in Liquid Crystalline Solvents, Journal of Chemical and Engineering Data, 39 (2), 266 (1994).
  16. J. S. Hwang, M. A. Morsy and G. A. Oweimreen : Nonmesomorphic Solute - Mesomorphic Solvent Interaction Studies:  1.  Visual and ESR Studies on Nitroxide Radicals in the Nematic and Isotropic Phases of 4-Cyano-4’-n-Pentylbiphenyl (5CB) Liquid Crystalline Solvent, The Journal of Physical Chemistry, 98, 9056 (1994).
  17. G. A. Oweimreen, M. A. Morsy and J. S. Hwang : A Novel Approach to Accurately Probe Transition Temperatures in Liquid Crystalline Systems, Molecular Crystals and Liquid Crystals, 265, 197 (1995).
  18. Y. T. Al-Janabi, A. L. Lewis and G. A. Oweimreen : Electrochemical Hydrogen Permeation Studies of Several Mono- and Diamines, Journal of the Electrochemical Society, 142 (9), 2865 (1995).
  19. M. A. Morsy, G. A. Oweimreen and J. S. Hwang : Nonmesomorphic Solute - Mesomorphic Solvent Interaction Studies : 2. ESR Studies on the Different Phases of 5CB, 6CB, 7CB  and 8CB Liquid Crystals Using PD-Tempone and Tempo-Palmitate as Probes.  Structural and Conformational Studies, The Journal of Physical Chemistry, 100 (20), 8331 (1996).
  20. M.  A. Morsy, J. S. Hwang and G. A. Oweimreen: Nonmesomorphic Solute - Mesomorphic Solvent Interaction Studies : 3. A unified Approach to probe Liquid Crystalline Order by ESR, The Journal of Physical Chemistry B, 101, 2120 (1997).
  21. Ghassan A. Oweimreen and Ali M. AL-Tawfiq : Thermodynamics of Solutions of Nonmesomorphic Solutes at Infinite Dilution in the Isotropic and Nematic Phases of p-n-Alkylbenzoates, Journal of Chem. Eng. Data, 42, 996 (1997).
  22. J. R. Conder, R. J. M. Gillies, G. A. Oweimreen and A. K. I.  Shihab : Wetting  Transition in Alkane Liquids on Silanised Diatomaceous Gas Chromatographic Supports, J. of  Chromatogr. A, 829, 201 (1998).
  23. G. A. Oweimreen and M. A. Morsy :  DSC Studies on p- Cyanophenyl p-(n-alkyl)benzoate     Liquid Crystals : Evidence for Polymorphism and Conformational Change, Thermochimica Acta,  325, 111 (1999).
  24. G. A. Oweimreen  and M. A. Morsy :  DSC Studies on p-(n-alkyl) p’- Cyanobiphenyl (RCB’s) and p-(n-alkyloxy) p’- Cyanobiphenyl (ROCB’s)  Liquid Crystals: Thermochimica Acta, 346, 37 (2000).
  25. G. A. Oweimreen and J. S. Hwang : Evidence of Tilt angle in an 8CB-!0CB   mixture, Chemical Physics Letters, 334, 83 (2001).
  26. G. A. Oweimreen : The Effect of Quasispherical Solutes on the Smectic A-Nematic and Nematic-Isotropic Phase Equilibria in p-n-Alkyl-p'-Cyanobiphenyl Liquid Crystals, The Journal of Physical Chemistry B, 105, 8411 (2001).
  27. G. A. Oweimreen : On the Nature of the Smectic A-Nematic Transition in 8CB, The Journal of Physical Chemistry B, 105, 8417 (2001).
  28. G. A. Oweimreen : Nature of the Smectic A-Nematic Transition in 8CB Revisited, The Journal of Physical Chemistry, 106, 11708 (2002).
  29. J. S. Hwang and G. A. Oweimreen : Anomalous Viscosity Behavior of a Bicelle System with Various Molar Ratios of Short- and Long-Chain Phospholipids, The Arabian Journal for Science and Engineering, 28, 43 (2003).
  30. J. S. Hwang and G. A. Oweimreen : The Solubility Product for PbCl2 from Electrochemical Measurements, J. Chem. Ed., 80, 1051 (2003).
  31. G. A. Oweimreen and J. S. Hwang : The effect of  N-(4-n-buty benzilidene) 4-amino 2.2.6.6-tetramethyl piperidine 1-oxide of the nematic-to-isotropic phase transition of 4-n-pentyl-4'-cyanobiphenyl, Thermochimica Acta, 421, 225 (2004).
  32. J.S. Hwang and G.A. Oweimreen : Anisotropy of Rotation of Nitroxide Probes in Nematogenic Liquid Crystals, Applied Magnetic Resonance, 26, 387 (2004).
  33. F. Yakuphanoglu, B. Bilgrin-Eran, H. Ocak and G. A. Oweimreen, "Conductance and Dielectric Anisotropy Properties of 4-cyano-4'-hexylbiphenyl – Salicylaldimine Compound Composite Liquid Crystalline Exhibiting Large Positive Dielectric Anisotropy", Physica B, 393, 270 (2007).
  34. J. S. Hwang and G. A. Oweimreen*, "Relating Static Shifts in the ESR Spectra of a Nitroxide Radical in Solution to Second Order Perturbation Theory", Concepts in Magnetic Resonance. Part A. 30A(6), 349 (2007).
  35. G. A. Oweimreen, "The Thermodynamics of Solution of Non-mesomorphic Solutes in the Liquid Crystal 6CB Revisited", The Arabian Journal of Science and Engineering, 33 (1A), 15 (2008).
  36. M. Okutan, F. Yakuphanoglu, O. Koysal, S. E. San and G. A. Oweimreen, Molecular Orientation and Dielectric Anisotropy of 4-cyano-4'-heptylbiphenyl – TiO2 Liquid Crystal Composite, Journal of Non-Crystalline Solids, 354, 3529 (2008).
  37. Jimmy. S. Hwang, Yahya. T. Al-Janabi and Ghassan. A. Oweimreen*: Frequency Dependent Study of the Correlation Functions in EPR Spectroscopy -The Cole-Davidson Approach.  II.  2,N-(4-n-butyl benzilidene) 4-amino 2,2,6,6-tetramethyl piperidine 1-oxide in Toluene, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 77, 862 (2010).
  38. Ghassan A. Oweimreen,  “Enthalpy-Entropy Compensation and Solubility Parameters for Solutions of Nonmesomorphic Solutes in the Smectic-A, Nematic and Isotropic Phases of the Liquid Crystal 8CB”,  Journal of Solution Chemistry, 40, 79 (2011).
  39. Mohammad W. S. Jawich, G. A. Oweimreen and Shaikh A. Ali, “Heptadecyl-tailed mono- and bis-imidazolines: A study of the newly synthesized compounds on the inhibition of mild steel corrosion in a carbon dioxide-saturated saline medium”, Corrosion Science 65 (2012) 104-112.
  40. G.A.Oweimreen, A.M.Y. Jaber, A.M. Abulkibash, N.A. Mehanna, The depletion of dibenzyl disulfide from a mineral transformer insulating oil (2012) IEEE Transactions on Dielectrics and Electrical Insulation, 19 (6), art. no. 6396954, pp. 1962-1970.
  41. N. A. Mehanna, A. M. Y. Jaber, G. A. Oweimreen and A. M. Abulkibash, “Assessment of Dibenzyl Disulfide and Other Oxidation Inhibitors in Transformer Mineral Oils”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 21, issue 3, pp. 1095-1099,  June 2014.
  42. N. A. Mehanna, A. M. Y. Jaber, G. A. Oweimreen and A. M. Abulkibash, “Concentration of 1, 2, 3 – benzotriazol to Suppress Sulfur Corrosion of Copper Windings by DBDS in Mineral Transformer Oils  ”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 22, No.2, pp. 859-963, April 2015.

Papers Presented at International Conferences

  1. R. S. Mikhail and G. A. Oweimreen : Surface Area and Pore Structure of Low Porosity Cement Pastes,  Presented at the Second Cairo Solid State Conference and  published in “ Recent Advances in Science and Technology of Materials” , 1973.
  2. G. A.Oweimreen and D. E. Martire : The Effect of n-Alkane Solutes on the Nematic-to-Isotropic Transition, Presented at the Sixth International Liquid Crystal Conference. Abstracts of the Sixth International Liquid Crystal Conference, Kent, Ohio, BI - 18 (1976).
  3. J. F. Galobardes, G. A. Oweimreen and L. B. Rogers : Use of Liquid Chromatography Apparatus to Study the Solubility of Sodium Chloride in Dry Steam, Presented at the 1979 Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy. Abstracts of the 1979 Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, Cleveland , Ohio, No. 291 (1979).
  4. D. E.Martire, G. A. Oweimreen and F. Dowell : The Effect of Solute Structure on the Nematic-Isotropic Transition in Binary Mixtures.   An invited key note lecture presented at the Fifth International Symposium on Solute-Solute-Solvent Interactions, Florence, Italy  (1980).
  5. G. A. Oweimreen : Thermodynamics of Solution of Various Nonmesomorphic Solutes in the Nematic and Isotropic Phases of 7CB,  Presented at the Eighth International Liquid Crystal Conference.    Abstracts of the Eighth International Liquid Crystal Conference, Kyoto, Japan  A-39P (1980).
  6. G. A. Oweimreen : Thermodynamic Data for Nonmesomorphic Solutes at Infinite Dilution in the Nematic and Isotropic Phases of 6CB;  Effects of Solute and Solvent Structures on the Solution Process, Presented at the Sixth International Symposium on Solute-Solute-Solvent Interactions. Abstracts of the Sixth International Symposium on Solute-Solute-Solvent Interactions, Osaka, Japan IB-LO4 (1982).
  7. G. A. Oweimreen and M. Hassan : Density  Measurements in the Nematic and Isotropic Phases of Dilute Solutions of Quasispherical Solutes in 7CB, Presented at the Ninth International Liquid Crystal Conference.   Abstracts of the Ninth International Liquid Crystal Conference, Bangalore, India p. 121 (1982).
  8. G. A. Oweimreen and S. F. Sikander : Density Measurements in the Nematic and Isotropic Phases of 5CB and Dilute Solutions of Tetraethylmethane in 5CB, Presented at the Tenth International Liquid Crystal Conference.   Abstracts of the Tenth International Liquid Crystal Conference, York, U.K., C35 (1984).
  9. G. A. Oweimreen : Solute-Solvent and Solvent-Solvent Interaction Parameters for Infinitely Dilute Solutions of Haloalkanes in Squalane-Dinonyl Phthalate Mixtures; Evidence for Weak 1:1 Haloalkane : Dinonyl Phthalate Complexes, Presented at the 7th International Symposium on Solute-Solute-Solvent  Interactions, Reading, U.K. (1985).
  10. G. A. Oweimreen : Thermodynamics of Solution of Nonmesomorphic Solutes in Alkoxycyanobiphenyl  Solvents, Presented at the Eleventh International Liquid Crystal Conference.   Abstracts of the Eleventh International Liquid Crystal Conference, Berkley, California, U.S.A., T-046-PH (1986).
  11. G. A. Oweimreen and J. S. Hwang : A Study of the Nematic-Isotropic Two-Phase Region in Mixtures of Quasispherical Solutes in Alkylcyanobiphenyls by ESR Using Tempone as Probe, Presented at the 12th International Liquid Crystal Conference.  Abstracts of the 12th International Liquid Crystal Conference,  Freiburg , Germany, DY 41 (1988).
  12. G. A. Oweimreen, Y. T. Al-Janabi and  F. Y. Al-Hauwaj : Mixed Solvents in Gas-Liquid Chromatography;  Activity Coefficients for Alkanes and Haloalkanes in Squalene and Dinonyl Phthalate Mixtures at 30.0 o C.  Proceedings of the Third National Meeting of Chemists at KFUPM, Dhahran, Saudi Arabia (1989).
  13. G. A. Oweimreen and A. K. Shihab : Thermodynamic Studies on Infinitely Dilute Solutions of Nonmesomorphic Solutes in Liquid Crystalline Solvents, Presented at the 23rd. International Conference on Solution Chemistry.  Abstracts of the 23rd. International Conference on Solution Chemistry, Leicester, U.K. (1993).
  14. M. A. Morsy, J. S. Hwang and G. A. Oweimreen : A Novel Study of Interactions between Nonmesomorphic Solutes and Nematogenic Solvents Using ESR, 207th American Chemical Society National Meeting and Exposition Program, San Diego, California, U.S.A.  (1994).
  15. G. A. Oweimreen,  M. A. Morsy and J. S. Hwang : Phase Diagrams for Binary Mixtures of  Nonmesomorphic Solutes in the Nematogenic Solvent 4-Cyano-4’-n-Pentylbiphenyl from Spin Probe Studies, 207th American Chemical Society National Meeting and Exposition Program, San Diego, California, U.S.A. (1994).
  16. J. S. Hwang, M. A. Morsy and G. A. Oweimreen : ESR Study of the Conformational Properties of  Nematic Liquid Crystals Using Nitroxide Spin Probes, 207th  American Chemical Society National Meeting and Exposition Program, San Diego, California, U.S.A., 1994.
  17. G. A. Oweimreen, M. A. Morsy and J. S. Hwang : Phase Diagrams from Spin Probe Studies for Binary Mixtures of Nonmesomorphic Solutes in 5CB.  Presented at the 15th International Liquid Crystal Conference, Budapest, Hungary,  July 1994.
  18. M. A. Morsy,  J. S. Hwang and  G. A. Oweimreen : An ESR Study of the Hydrodynamic Behaviour of Nitroxide Spin Probes in Nematogenic Liquid Crystal Solvents.  Presented at the 210th ACS National Meeting, Chicago, IL., USA, 1995.
  19. Y. T. Al-Janabi, A. L. Lewis and G. A. Oweimreen," Electrochemical hydrogen permeation investigations of several monoamines", proceedings of the 8th Middle East Corrosion Conference at Bahrain, May 18-20, 1998.
  20. G. A. Oweimreen and M. A. Morsy, "Detection of polymorphism and conformational change in the solid states of liquid crystals by DSC", Abstracts of the 15th international conference on chemical thermodynamics, Porto, Portugal, p7-5, July 26-August 1, 1998.
  21. G. A. Oweimreen,"A phase diagram for mixtures of n-octyl and n-decyl cyanobiphenyls", abstracts of the 4th international conference on materials chemistry, Dublin, Ireland, p82, July 13-16, 1999.
  22. M. A. Morsy, G. A. Oweimreen and J. S. Hwang," An EPR study of the phase transition behavior of binary mixtures of non-mesomorphic solutes in mesomorphic solvents", abstracts of the 41st Rocky Mountain Conference on Analytical Chemistry, Denver, Colorado, U.S.A., August 1-5, 1999.
  23. J. S. Hwang and G. A. Oweimreen, "Thermodynamic Properties of PbCl2 Solutions from Electrochemical Measurements", Proceedings of the First Saudi Science Conference, KFUPM, Dhahran, Saudi Arabia, April 2001, p.583.
  24. J. S. Hwang and G. A. Oweimreen, "Anomalous Viscosity in the Phospholipid Bicelle System Consisting of DMPC/DHPC/H2O Mixtures", Proceedings of the First Saudi Science Conference, KFUPM, Dhahran, Saudi Arabia, April 2001, p.411.
  25. J. S. Hwang and G. A. Oweimreen, "Anisotropy of Rotation of N-(4-n-butylbenzilidine) 4-amino 2,2,6,6-tetrammethylpiperidine 1-oxide (BBTMPO) in the vicinity of the Nematic-to-Isotropic Phase Transition of 4-n-pentyl-4'-cyanobiphenyl", Proceedings of the 26th Intenational EPR Symposium, Denver, USA, July 27-31, 2003, p.62.
  26. G. A. Oweimreen and J. S. Hwang, "The effect of N-(4-n-butylbenzilidine) 4-amino 2,2,6,6-tetrammethylpiperidine 1-oxide (BBTMPO) on the nematic-to-isotropic phase transition of 4-n-pentyl-4'-cyanobiphenyl", Abstracts of the 6th International Conference on Materials Chemistry, MC6: Frontiers and Interfaces, University of Sheffield, UK, July 29-August 1, 2003, p. 18.
  27. J. S. Hwang and G. A. Oweimreen: "An Experimental Verification of a Second Order perturbation Effect", Accepted for presentation at the 18th IUPAC International Conference on Chemical Education, Istanbul, Turkey, August 3-8, 2004.
  28. J. S. Hwang and G. A. Oweimreen: "Solubility Product of PbCl2 from Electrochemical Measurements",Accepted for presentation at the 18th IUPAC International Conference on Chemical Thermodynamics, Beijing, China, August 17-21, 2004.
  29. G. A. Oweimreen, "Thermodynamics of Solution of Non-mesomorphic Solutes in the p-n-hexyl-p'-cyanobiphenyl (6CB) Liquid Crystal Solvent; an oral presentation.   Abstracts of the 12th International Symposium on Solubility Phenomena and Equilibrium Processes at the TU Bergakademie Freiberg, July 23 – 24, 2006, Freiberg, Germany.  
  30. F. Yakuphanoglu, M. Okutan, G. A. Oweimreen*, Eduardo F. Marques, Bruno F. B. Silva and O. Koysal, "The Refractive Dispersion Analysis and the Optical Constants of Hexadecyltrimethylammonium 4-Octylbezenesulfonate (TABSo) Doped 4-n-pentyl-4'-cyanobiphenyl (5CB) Nematic Liquid Crystal, Abstracts of the Eighth International Conference on Materials Chemistry, MC8; Advancing Materials by Chemical Design, July 02-05, 2007, London, U.K.
  31. G. A. Oweimreen, Thermodynamics of Solution of non-Mesomorphic Solutes in the n-Hexyl-n'-Cyanobiphenyl (6CB) Liquid Crystal Solvent, Abstracts of the Fifth Jordanian International Conference of Chemistry, June 18 – 20, 2008, Irbid, Jordan.
  32. M. Okutan, F. Yakuphanoglu, O. Koysal, S. E. San and G. A. Oweimreen, Molecular Orientation and Dielectric Anisotropy of 4-cyano-4'-heptylbiphenyl – TiO2 Liquid Crystal Composite, Abstracts of The 13th International Symposium on Solubility Phenomena and Related Equilibrium Processes, July 27 – 31, 2008, Dublin, Ireland.
  33. N. A. Mehanna, G. A. Oweimreen, A. M. Y. Jaber and A. M. Abulkibash, “The Sulfur Corrosion of the Copper Windings in Power Transformers”, Abstracts of The Ninth International Conference on Diffusion in Solids and Liquids, 24-28 June, 2013 Madrid, Spain.

Conferences Attended Without Presenting Papers

  • The Eighth International Symposium on Solute-Solute-Solvent Interactions,   Regensburg, Germany, August 1987.

  • The 11th IUPAC Conference on Chemical Thermodynamics,   Como, Italy, August 1990.

  • The Fifth International Ferroelectric Liquid Crystal Conference,    Cambridge, U.K., July 1995.

  • The 16th IUPAC Conference on Chemical Thermodynamics,    Dalhousie University, Halifax, Nova Scotia, Canada, August 6-11, 2000.  

  • The 42nd IUPAC Congress, Chemistry Solutions, Glasgow, U.K., August 2009.

  • The 10th International Conference on Materials Chemistry (MC10), University       of Manchester, Manchester, U.K., July 4–7, 2011.

  • 22nd International Conference on Chemistry Education and 11th European Conference on Research in Chemistry Education, 15-20 July, 2012, Rome, Italy.

 



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