Ralph E. Christoffersen

Author

Also Known As

Harmony, Marlin, R. E. CHRISTOFFERSEN, R. E. Christoffersen, R.E. Christoffersen, RALPH E. CHRISTOFFERSEN, Ralph Christoffersen, Ralph E Christoffersen, Ralph E. CHRISTOFFERSEN, Ralph E. Christoffersen

144

Publications

2.6K

Citations

H-Index

Concepts

All Affiliations

University of Kansas Argonne National Laboratory W.E. Upjohn Institute for Employment Research Indiana University Bloomington

About

Ralph E. Christoffersen is an author at University of Kansas specializing in quantum chemistry, natural sciences, and chemistry.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Natural Sciences	28	45	1.9K
2	Engineering	25	39	1.6K
3	Health Sciences	8	8	498
4	Medicine	5	5	134
5	Applied Physics	5	5	155

Ralph E. Christoffersen

Publications

2.3K

Citations

H-Index

Page 1

	Year	Citations
The development of quantum mechanical solvent effect models. Macroscopic electrostatic contributions J. H. MCCREERY, Ralph E. Christoffersen, G. G. Hall Journal of the American Chemical Society Molecular SciencesEngineeringChemical AnalysisPhysicsDonut Icon	1976	115
Development of a flexible intra- and intermolecular empirical potential function for large molecular systems Tetsuro Oie, Gerald M. Maggiora, Ralph E. Christoffersen, International Journal of Quantum Chemistry EngineeringMolecular BiologyComputational ChemistryChemistryMolecular Computing	1981	105
Stereoelectronic properties of photosynthetic and related systems James D. Petke, Gerald M. Maggiora, Lester L. Shipman, Journal of Molecular Spectroscopy Plant PhysiologyEngineeringPhotorespirationBotanyPhotochemistry	1978	104
STEREOELECTRONIC PROPERTIES OF PHOTOSYNTHETIC AND RELATED SYSTEMS — V. <i>AB INITIO</i> CONFIGURATION INTERACTION CALCULATIONS ON THE GROUND AND LOWER EXCITED SINGLET AND TRIPLET STATES OF ETHYL CHLOROPHYLLIDE <i>a</i> AND ETHYL PHEOPHORBIDE <i>a</i> James D. Petke, Gerald M. Maggiora, Lester L. Shipman, Photochemistry and Photobiology PhotobiologyExcitation Energy TransferOrganic ChemistryComputational ChemistryChemistry	1979	98
Configuration-Interaction Study of the Ground State of the H3+ Molecule Ralph E. Christoffersen The Journal of Chemical Physics Total EnergyEngineeringComputational ChemistryChemistryBasis Orbitals	1964	97
Stereoelectronic properties of photosynthetic and related systems. 1. Ab initio quantum mechanical ground state characterization of free base porphine, chlorin, and ethyl pheophorbide a Dale Spangler, Gerald M. Maggiora, Lester L. Shipman, Journal of the American Chemical Society EngineeringAltmetric Attention ScoreOrganic ChemistryChemistryFree Base Porphine	1977	97
Ab initio calculations on large molecules using molecular fragments. Evaluation and extension of initial procedures Ralph E. Christoffersen, Dale Spangler, G. G. Hall, Journal of the American Chemical Society Chemical AnalysisBiochemistryNatural SciencesMolecular FragmentsAb Initio Calculations	1973	79
A model for the ab initio calculation of some solvent effects Jane Hylton, Ralph E. Christoffersen, G. G. Hall Chemical Physics Letters Thermodynamic ModellingChemical ThermodynamicsEngineeringSolvent EffectsNatural Sciences	1974	76
Ab initio calculations on large molecules using molecular fragments. Preliminary investigations Ralph E. Christoffersen, Gerald M. Maggiora Chemical Physics Letters PhysicsNatural SciencesMolecular FragmentsAb Initio CalculationsComputational Chemistry	1969	70
Stereoelectronic properties of photosynthetic and related systems. 2. Ab initio quantum mechanical ground state characterization of magnesium porphine, magnesium chlorin, and ethyl chlorophyllide a Dale Spangler, Gerald M. Maggiora, Lester L. Shipman, Journal of the American Chemical Society EngineeringPhotorespirationAltmetric Attention ScoreComputational ChemistryChemistry	1977	65

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