Publications

REFEREED PUBLICATIONS:

1. L. L. Combs and L. K. Runnels, "Proton Coupling Constants in Cyclobutanone", J. Chem.Phys., 44, 2209 (1966).

2. L. K. Runnels and L. L. Combs, "Exact Finite Methods of Lattice Statistics I. Square and Triangular Lattice Gases of Hard Molecules", J. Chem. Phys., 45, 2482-2492 (1966).

3. L. K. Runnels, L. L. Combs and James P. Salvant, "Exact Finite Method of Lattice Statistics II. Honeycomb Lattice Gas of Hard Molecules", J. Chem. Phys., 47, 4015-4020 (1967).

4. L. L. Combs and L. K. Runnels, "One-Center Molecular Orbitals for HeH++ and HeH+ with Variable Origin", J. Chem. Phys., 49, 4216-4218 (1968).

5. L. L. Combs, "Special Functions for One-Center Molecular Orbitals", J. Miss. Acad. Sci., 15, 40 (1969).

6. L. L. Combs, "Reliability of One-Center Molecular Orbitals", J. Miss. Acad. Sci., 15, 42 (1969).

7. L. L. Combs, W. H. McMahan, Jr. and S. H. Farish, "A Dielectric Constant Study of Molecular Association in Polar-Polar Mixtures: o- Dichlorobenzene-Butyl Alcohol", J. Phys. Chem., 75, 2133-2138 (1971).

8. Marvin W. Barker, Leon L. Combs, and Jack T. Gill, "On the Mechanism of the 1,2-Cycloaddition Reaction of Ketenimines and Nitrosoarenes", J. Heterocyclic Chem., 9, 77-79 (1972).

9. L. L. Combs, Miles Holloman, "Anomalous Energy Minima by Semiempirical Calculations", Spectroscopy Letters, 5, 319-321 (1972).

10. L. L. Combs, Miles Holloman, Judy K. Young, "A Semiempirical Study of the Sugar Radical in Irradiated Cytidylic Acid b and Deoxyadenosine", Radiat. Res., 56, 8-20 (1973).

11. Leon L. Combs and Miles Holloman, "Reparameterization of Semiempirical Techniques to Remove Anomalous Energy Minima", Spectroscopy Letters, 6, 257-260 (1973).

12. L. L. Combs and Miles Holloman, "Semiempirical Calculations of Internal Barriers to Rotation and Ring Puckering. I. Present Techniques", J. Phys. Chem., 79, 512-521 (1975).

13. R. J. Higgins, L. L. Combs, Thomas B. Malloy, Jr., and Robert L. Cook, "Low Resolution Microwave Spectra and INDO Calculations of Phenylisothiocyanate and Phenylisocyanate", J. Mol. Struct., 28, 121- 127 (1975).

14. L. L. Combs and Michael Rossie, Jr., "Semiempirical Calculations of Internal Barriers to Rotation and Ring Puckering. II. A MINDO/3 Study", J. Mol. Struct., 32, 1-7 (1976).

15. L. L. Combs and Miles Holloman, "Semiempirical Calculations of Internal Barrier to Rotation and Ring Puckering. III. A Reparameterization Study", J. Mol. Struct., 33, 289-305 (1976).

16. L. L. Combs and Carl Miller, "The Use of Single Exponential Orbitals in One-Center Molecular Orbital Calculations", Int. J. Quantum. Chem. 10, 455-460 (1976).

17. L. L. Combs, "A Teaching Approach to Physical Chemistry", Journal of Research in Science Teaching, 13, 467-472 (1976).

18. L. L. Combs and Michael Rossi, "Anomalous Energy Minima Studies by MINDO/3", Spectroscopy Letters, 9, 499-512 (1976).

19. Leon L. Combs, "A Linear Combination of Molecular Orbital Formalism", Int. J. Quantum Chem., 11, 1001-1004 (1977).

20. Leon L. Combs, Charles Waggoner, S. K. Burt, and Gary Dukes, "A Study of Possible Morphine Complexes Formed with Calcium and Magnesium", Spectroscopy Letters, 10, 559-569 (1977).

21. Leon L. Combs, "Anomalous Energy Minima Surfaces by Semiempirical and Ab-Initio Methods", Spectroscopy Letters, 11, 227-236 (1978).

22. Aldwyn H. Tang Kai and Leon L. Combs, "A MS-X MT Study of Cyclobutane", Int. J. Quantum Chem. Symp., 13, 175-182 (1979).

23. R. W. Kitchin, K. W. Pittman, L. L. Combs, and Robert L. Cook, "Molecular Conformation of Cyclohexyl Isocyanate and Cyclohexyl Isothiocyanate from their Low Resolution Microwave Spectra", J. Mol. Struct., 63, 303 (1980).

24. Robert B. Koch and Leon L. Combs, "Effects of Urushiol Compounds Isolated from Poison Ivy and ATPase Activities", Biochem. Pharmacology, 30, 1133-1135 (1981).

25. G. M. Bell, L. L. Combs, L. J. Dunne, "Theory of Critical Phenomena in Lipid Systems", Chemical Reviews, 81, 15-48 (1981).

26. Erikki Brandas, Leon L. Combs, Nestor S. Correia, "Size Consistency Corrections for Configuration Interaction Calculations", Int. J. Quantum Chem., 21, 259-267 (1982).

27. Lawrence J. Dunne and Leon L. Combs, "Toward a Molecular Theory of Phase Transition in Fatty Acid Monolayers", Int. J. Quantum Chem., 21, 239-250 (1982).

28. Leon L. Combs, L. J. Dunne, "Supermolecule Calculations of Intermolecular Forces Between Long-Chain Molecules", J. Mol. Struct., 87, 375-386 (1982).

29. Leon L. Combs and Sten Lunell, "A SCF and MC-SCF Study of CO2 with Bond Angle Variation", Int. J. Quantum Chemistry, 22, 465-472 (1983).

30. L. J. Dunne, G. M. Bell, Leon L. Combs, "Molecular Theory of Critical Phenomena in Aliphatic Carboxylic Acid Monolayers", Int. J. Quantum Chem., 25, 796-808 (1984).

31. Leon L. Combs, "University/Industry Interactions, A Chemistry Example", Issues in Higher Education, 13, 577-587 (1984).

32. Eugene Grimley, Leon L. Combs, and Charles U. Pittman, Jr., "Development of Cooperative Industrial Education at Mississippi State University", J. Chem. Ed., 63, 235-236 (1986).

33. L. L. Combs, "Work Load, Evaluation, and Raises", Issues in Higher Education, 22, 208-217 (1986).

34. L. L. Combs, A. Morgan, and J. Lott, "Geometry Optimization in Molecular Structure Calculations: Vinylcyclopropane and Vinyloxirane", Spectroscopy Letters, 23, 369-377 (1990).

35. L. L. Combs, "An Alternative View of Fugacity", J. Chem Ed., 69, 218-219 (1992).

36. Charles Waggoner and L. L. Combs, "Optimization Techniques in Energy Calculations Involving the Hartree-Fock Density Matrix I. Preliminary Study", J. Optimization Theory and Applications, 76, 225-240 (1993).

37. L. L. Combs, "Active Learners in Physical Chemistry and Modern Physics", J. Chem. Ed., 70, 462-464 (1993).

38. L. L. Combs and G. N. Lynn, "Computer -Generated Ternary Phase Diagrams", J. Chem. Ed., 72, 608-609 (1995)..

39. Beth Keene (L. L. Combs, Advisor), "Hydrogen Bonding Solvent Effects on Conformational Stability", M.S. Thesis, 1995.

40. B. Guo, S.Kao, H. McDonald, W. W. Wilson, A. Asanov, L. L. Combs, "Correlation of Second Virial Coefficients and Solubilities Useful in Protein Growth", J. Crystal Growth, 196, 424-433 (1999).

41. Leon L. Combs, "Web Courses in Freshman Chemistry", Using Computers in Chemical Education, Fall ACS Newsletter, 2002.

42. Leon L. Combs, "The Design, Assessment, and Implementation of a Web-Based Course", Educational Technology Review, 12(2), 2004.

43. Leon L. Combs, "Science Education in the Web Era", Journal of Computers in Mathematics and Science Teaching, Vol. 23, Issue 2, p 139-149, 2004.

PAPERS PRESENTED:

1. L. L. Combs, "Semiempirical Molecular Orbital Calculations on Substituted Nitrosobenzenes", Mississippi Academy of Sciences, April 1970.

2. L. L. Combs, "Preliminary Study of the Statistical Mechanics of Dimer Formation", Mississippi Academy of Sciences, April 1971.

3. L. L. Combs, "Improved Single-Center Wavefunctions", Southeast Theoretical Chemistry Meeting, American Chemical Society, Tallahassee, Florida, June 1971.

4. L. L. Combs, Miles Holloman, "Studies of Internal Rotations by Semiempirical Techniques", Mississippi Academy of Sciences, April 1972.

5. L. L. Combs, "Theoretical Chemistry at Mississippi State University" Southeastern Theoretical Chemistry Meeting, Tallahassee, Florida, June 1972.

6. L. L. Combs, Miles Holloman, "Calculations of the Internal Rotation Barrier in Cyclobutanone", 1972 Southwestern Meeting of the American Chemical Society in Baton Rouge , Louisiana.

7. L. L. Combs, Miles Holloman, "Semiempirical Calculations of Barriers to Internal Rotation", 165th American Chemical Society National Meeting in Dallas, Texas, April 1973.

8. Miles Holloman, Leon L. Combs, "A Study of Substituent and Molecular Frame Orientation Effects on Calculated Hyperfine Coupling Constants", Mississippi Academy of Sciences, March 1973.

9. Leon L. Combs, "Hybrid One-Center Molecular Orbitals", Mississippi Academy of Sciences, March 1973.

10. Leon L. Combs, Miles Holloman, "Reparameterization of INDO for the Calculations of Barriers to Internal Rotation", 25th Southeastern Regional Meeting of the American Chemical Society, Charleston, South Carolina, November 7-9, 1973.

11. L. L. Combs, "A Physical Chemistry Course with Multiformity", 168th National Meeting of the American Chemical Society in Atlantic City, New Jersey, Sept. 1974.

12. L. L. Combs, "Semiempirical Calculations of the Structure and Internal Rotation of Dimethyl Ether", Southeastern Regional Meeting of the American Chemical Society in Norfolk, Virginia, October 1974.

13. L. L. Combs, "Theoretical Conformational Analysis", Mississippi Academy of Sciences, March 1974.

14. L. L. Combs, "A Study of Trimer Formation by Lattice Statistics", Southeast Theoretical Chemistry Meeting, Tuscaloosa, Alabama, June 1974.

15. L. L. Combs, "Semiempirical Quantum Mechanical Calculations of the Structure of Crotonic Acid", Mississippi Academy of Sciences, March 1974.

16. L. L. Combs, "Semiempirical Calculations of the Structure and Rotational Barriers of Some Crotonyl Compounds", combined Southeast- Southwest Regional Meeting of the American Chemical society, Memphis, Tennessee, October 1975.

17. Derryl Stagg, Kashinath Nag, and Leon L. Combs, "An INDO Conformational Analysis of Histamine and 4-Methyl Histamine", Mississippi Academy of Sciences, March 1976.

18. Donald K. Lum, Theresa I. Gilliland and Leon L. Combs, "Intramolecular Hydrogen Bonding in Malonaldehyde and Some of its Derivatives as Studied by Semiempirical Quantum Mechanics", Mississippi Academy of Science, March 1976.

19. Michael Rossie, Jr. and Leon L. Combs, " A Study of False Minima in Quantum Mechanical Conformational Analysis", Mississippi Academy of Sciences, March 1976.

20. Leon L. Combs, "A Linear Combination of Molecular Orbital Formalism", Future of Quantum Chemistry Symposium, Dalseter, Norway, September 1976.

21. Leon L. Combs, "Linear Combination of Molecular Orbitals in Molecular Calculations", International Symposium on Atomic Molecular, and Solid State Theory at Sanibel Island, Florida, January 12-22, 1977.

22. Leon L. Combs, Danny L. Tuck, and Phillip H. Patridge, "CNDO/2 Calculated Structures of 2-Furancarboxaldehyde and 2- Furnacarbonylchloride", Mississippi Academy of Sciences, March 1977.

23. Leon L. Combs, Amar A. Saad, and Roger D. McElroy, "CNDO/2 Calculated Structures of Crotonaldehyde and Crotonylchloride", Mississippi Academy of Sciences, March 1977.

24. Leon L. Combs and Charles A. Waggoner, "CNDO/2 Calculated Structures of Acrolein and Aryolychloride", Mississippi Academy of Sciences, March 1977.

25. Leon L. Combs, Don K. Lum, and Michael Rossie, "The Perplexing Structure of Malonaldehyde", 173rd National Meeting of the American Chemical Society in New Orleans, Louisiana, March 25, 1977.

26. Leon L. Combs and Charles A. Waggoner, "A PCILO Study of Rotational Potential Barriers", Southwest Regional Meeting of the American Chemical Society, Little Rock, Arkansas, December 1977.

27. Leon L. Combs and Charles A. Waggoner, "An Audio- Visual Pre- Laboratory Program for Physical Chemistry Laboratories", Mississippi Academy of Sciences, March 1979.

28. Leon L. Combs and Aldwyn Tang Kai, "A MS-X Study of Cyclobutane", International Symposium on Atomic, Molecular, and Solid-State Theory at Palm Coast, Florida, March 1979.

29. Thomas Fleishmann and Leon L. Combs, "A Quantum Mechanical Conformational Study of Vinyloxorane", Mississippi Academy of Sciences, March 1981.

30. Leon L. Combs, Quantum Mechanical Calculations of Intermolecular Forces Between Large Molecules", Mississippi Academy of Sciences, March 1981.

31. Leon L. Combs, "Theory of Phase Transitions in Monolayers", 181st National Meeting of the American Chemical Society, Atlanta, Georgia, April 1981.

32. Leon L. Combs, "Supermolecular Calculations of Intermolecular Forces", 33rd Southeastern Regional Meeting of the American Chemical Society, Lexington, Kentucky, November 1981.

33. Leon L. Combs and Sten Lunnell, "A SCF and MC-SCF Study of CO2 with Bond Angle Variation", Fourth International Congress in Quantum Chemistry, Uppsala, Sweden, June 13-20, 1981.

34. Leon L. Combs, "A Molecular Theory of Critical Phenomena in Carboxylic Acid Monolayers", 34th Southeastern Regional Meeting of the American Chemical Society, Birmingham, Alabama, November 1982.

35. Leon L. Combs, D. L. Tuck, R. L. Cook, and V. F. Kalasinsky, "A Conformational Study of 2-Furancarboxaldehyde and 2- Furancarbonylchloride", Mississippi Academy of Sciences, Jackson, February, 1983.

36. Leon L. Combs, "University/Industry Interactions, A Chemistry Example", Academic Chairpersons National Meeting, Orlando, Florida, January 1984.

37. Charles Waggoner and Leon L. Combs, "Direct Calculation of the Hartree-Fock Density Matrix", Joint 33rd Southwest/37th Southeast Regional ACS Meeting, Memphis, Tennessee, October, 1985.

38. Leon L. Combs, "Work Load, Evaluation, and Raises", National Conference on Faculty Evaluation and Development: Lessons Learned, Kansas City, Missouri, April 1986.

39. Charles Waggoner and Leon L. Combs, "Optimization Techniques in the Direct Calculation of the Hartree-Fock Density Matrix", Sanibel Symposia, St. Augustine,Fl, March, 1990.

40. Beth Keene and Leon L. Combs, "Solvent Effects on Molecular Structure", Southeastern Theoretical Chemistry Association, Clemson University, May, 1992.

41. Leon L. Combs, "Web Course in a Box", KSU Learning Center, March, 1998

42. Cathy Beise. Herb Davis, Leon L. Combs, and Phillipe Laval, "Top Class vs. Bottom-Up On-Line Course Delivery, Georgia Conference on College & University Teaching, April, 1998.

43. Leon L. Combs, "Web-Based Course Supplements", May Day Celebration of Faculty Scholars and Artists, May, 1998.

44. Leon L. Combs, "Web-Based Physical Chemistry", CAISER Project, Emory University, May, 1998.

45. Leon L. Combs, "Web Based Physical Chemistry Lab Supplement", SEMACS, North Carolina State University, November, 1998.

46. Leon L. Combs, "A Chemistry Web-Based Course Supplement", WebNet98 World Conference, Orlando, Florida, November, 1998.

47. Leon L. Combs, "Chemistry on the Web", Ed-Media99 World Conference, Seattle, Washington, June 19-24, 1999.

48 Leon L. Combs, "Multidimensional Web-Based Learning in Freshman Chemistry", WebNet99 World Conference, Honolulu, Hawaii, November, 1999.

49 Leon L. Combs, "Web-Based General Chemistry", University System Computing Conference, Rock Eagle, Georgia, November, 1999.

50 Leon L. Combs, "The Design, Assessment, and Implementation of a Web-Based Course", EdMedia00, World Conference, Montreal, Canada, June 26-30, 2000.

51 Leon L. Combs, "Learning Styles as a Basis for Web-Site Design", University System Computing Conference, Rock Eagle, Georgia, November, 2000.

52. Leon L. Combs, "Planning for E-Course Success", Paper presented at EdMedia01, Tampere, Finland, June 27, 2001.

53. Leon L. Combs, "Web Course Design and Implementation, From Idea to Completion", Workshop presented at EdMedia01, Tampere, Finland, June 25, 2001.

54. Leon L. Combs, "Web-Based Education Utilizing Learner Styles", invited paper presented at Scuola Superiore G. Reiss Romoli (SSGRR) in L'Aquila, Italy, August 8, 2001.

55. Leon L. Combs, "On-Line Chemistry", Southeastern meeting of the American Chemical Society, September 25, 2001. (also Organizer and Chair of symposium on Web-Assisted Chemistry Education at the meeting)

56. Leon L. Combs, "Audio Slides with Sound Forge and Real Slideshow", University System Computing Conference, Rock Eagle, Georgia, October 25, 2001.

57. Leon L. Combs, "Building a Web Site to Teach Chemistry" a three-hour workshop to be presented at the Southeastern Regional Meeting of the American Chemical Society in Charleston, SC, November 13, 2002.

58.Leon L. Combs, "Science Education in the Web Era", Elearn02, World Conference, Montreal, Canada, October, 2002.

59.Leon L. Combs, "Web Course Design and Implementation from Start to Finish", 3-hour workshop presented at EdMedia02, Denver, Colorado, June 24, 2002

60. Leon L. Combs, "Building a Web Site to Teach Chemistry" a three-hour workshop presented at the Southeastern Regional Meeting of the American Chemical Society in Charleston, SC, November 13, 2002.

61. Leon L. Combs, ?Building a Web Site for E-Learning?, EdMedia03 World Conference, Honolulu, Hawaii, June 24, 2003.