Browsing Digitized Theses and Dissertations (1922–2004) by Author "Laane, Jaan"
Now showing items 1-20 of 24
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Pickard, James Morgan (Texas A&M University. Libraries, 1976)The gas phase reaction of 1,1-difluoroethylene with bromine was studied over the temperature range 550 to 620°K. The experimental data, derived from the early stages of reaction, were found to be consistent with the following ...
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Ohlsen, James Raymond (Texas A&M University. Libraries, 1977)The colored species (λ[subscript max] ~ 500 nm) formed form the reaction of nitric oxide with Lewis acids (BF₃, BCl₃, SiF₄, TiCl₄, and SnCl₄), SO₂, or HCL at 77°K has been characterized by resonance Raman and infrared ...
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DelliSante, Gregory Noel (Texas A&M University. Libraries, 1982)The natures of adsorption sites on La(,2)O(,3), Nd(,2)O(,3), and selected praseodymium oxides were investigated by examining surface reactions of probe molecules using computerized transmission infrared (IR) spectroscopy ...
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Cortez, Enriqueta (Texas A&M University. Libraries, 1994)The far-infrared and low-frequency Raman spectra of 1,3-Dioxole have been analyzed. The gas-phase far-infrared spectrum shows a series of eleven singlequantum- jump and three triple-quantum-jump transitions in the 40-330 ...
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Rosas, Rebecca Lee (Texas A&M University. Libraries, 1990)Semi empirical computational methods can be used in conjunction with low frequency infrared and Raman spectra of gas -phase molecules to obtain information about large amplitude vibrations which are important for understanding ...
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Pacheco, Jorge Luis (Texas A&M University. Libraries, 1987)The use of laser-excited fluorescence spectroscopy has generated interest as a technique for the measurement of atomic trace concentrations in heterogeneous flame systems. Under saturation of the radiatively excited level ...
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Geoffroy, Katherine Ann (Texas A&M University. Libraries, 1977)The amount of angular momentum dissipated during the particle emission and photon emission stages of the deexcitation of the compound nuclei formed in the reactions of 107, 155, and 197 MeV ¹²C ions with ²⁷A1 and with ...
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Winters, James Curtis (Texas A&M University. Libraries, )The electron paramagnetic resonance spectra of lumiflavin (LF), Flavin mononucleotide (FMN), and riboflavin (RF) anion radicals in alkaline aqueous solutions of sucrose, dextrose hydrate, and glycerol have been recorded. ...
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Cooke, Joel Midleton (Texas A&M University. Libraries, 1979)In an attempt to determine the forces responsible for the conformations of small ring molecules the spectra of a series of ring molecules have been recorded and analyzed. Theoretical calculations were carried out to determine ...
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Villarreal, John Ricardo (Texas A&M University. Libraries, 1976)The conformations of several cyclic and bicyclic molecules were investigated through interpretation of their infrared and Raman spectra. The molecular systems included cyclopentene and three deuterated derivatives, a series ...
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Williamson, Rodney Lowell (Texas A&M University. Libraries, 1989)Total geometry optimizations are reported for Cr(CO)₆ , HMn(CO)₅ , Fe(CO)₅ , Ni(CO)₄ , Cr(C₆H₆)₂, Fe(C₅H₅)₂ , Ni(C₄H₄)₂, Cr(NO)₄, (C₅H₅)Mn(CO )₃, and (C₆H₆)Cr(CO)₃ . A variety of basis sets were examined, and, based on the ...
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Davy, Randall Dean (Texas A&M University. Libraries, 1988)Ab initio Hartree-Fock-Roothaan self-consistent-field (HFR-SCF) and generalized valence bond (GVB) geometry optimizations are used to study problems that are inaccessible to experiment. The theoretically determined molecular ...
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Killough, Patrick Minte (Texas A&M University. Libraries, 1982)Computational methods were developed for correctly calculating the reduced masses for the ring-puckering and ring-twisting vibrations and for calculating the kinetic energy expansions for ring-puckering vibrations. Computer ...
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Jagodzinski, Paul William (Texas A&M University. Libraries, 1979)
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Owens, Michael Shawn (Texas A&M University. Libraries, 1988)The intermetallic compounds of the Brewer-Engel type represent a unique case in novel heterogeneous catalyst systems. The components of these alloys are known to have altered electronic structures described as sharing of ...
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Zhang, Yiping (Texas A&M University. Libraries, 1993)Two types of layered lanthanum phosphonates have been prepared and characterized by XRD, TGA, NMR and ER. The one form ed at pH< 3 has a composition of LaH(C>3 PR)2 (R= CH3, C2H 5 , C^Hs) and the other prepared at pH > 8 ...
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Irwin, Richard Michael (Texas A&M University. Libraries, 1978)In order to gain further insight into the forces governing the conformation of cyclobutane and its analogs, the molecules 1,3-disilacyclobutane and 1,3-disilacyclobutane-1,1,3,3-d₄ were prepared and studied for the first ...
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Kingcade, Joseph Edward (Texas A&M University. Libraries, 1983)The equilibrium involving gaseous species above the condensed systems Y/Ge, Y/Si, Sc/Ge, Sc/Si, Pd/Ge and Ni/Ge have been experimentally investigated at elevated temperatures by means of the high temperature mass spectrometric ...
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Strickland, Kim Eldon (Texas A&M University. Libraries, 1985)Two-photon excitation spectra were taken for the following compounds: phenanthrene, 3,4-benzophenanthrene, triphenylene, chrysene, pyrene, and tetracene. The samples were dissolved in n-alkane solvents and the spectra were ...
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Zhang, Jian (Texas A&M University. Libraries, 1993)T he jet-cooled fluorescence excitation spectra o f cyclopentanone, cyciobutanone and their isotopom ers have been recorded in the 305-335 nm region, respectively. T he electronic band origin for the tw o undeuterated ...