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The Affective Variant Hypothesis: How Is Bulimia Nervosa Related To Depression?, Rita C. Prather Jan 1989

The Affective Variant Hypothesis: How Is Bulimia Nervosa Related To Depression?, Rita C. Prather

LSU Historical Dissertations and Theses

Bulimia nervosa patients frequently score from mild to severe on measures of depressive symptoms. This association between bulimia nervosa and depression led some researchers to hypothesize that bulimia nervosa is a variant of the affective disorder of depression. The main purpose of this study was to provide further evaluation of the affective variant hypothesis of bulimia nervosa. It was postulated that bulimia nervosa patients with and without depression would differ from each other and from depressives without eating disorders on specific measures of cognitive, behavioral, and somatic symptoms associated with depression. Secondly, it was hypothesized that the nondepressed and depressed …

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Spectroscopic Studies Of Biological And Synthetic Tetranuclear Iron-Sulfur Clusters., Yvonne Amalia Onate Jan 1989

Spectroscopic Studies Of Biological And Synthetic Tetranuclear Iron-Sulfur Clusters., Yvonne Amalia Onate

LSU Historical Dissertations and Theses

Room-temperature UV-visible adsorption, low-temperature magnetic circular dichroism (MCD), electron paramagnetic resonance (EPR), and resonance Raman (RR) spectroscopies have been used to characterize the electronic, magnetic and structural properties of the (4Fe-4S) centers in Azotobacter vinelandii Fe proteins from Mo- and V-nitrogenases (Av2 and Av2$\sp\prime$, respectively), and Bacillus subtilis glutamine phosphoribosylpyrophosphate amidotransferase. These studies have characterized the S = 1/2 and S = 3/2 forms of the (4Fe-4S) $\sp{1+}$ cluster in native Av2 and Av2$\sp\prime$ in the presence and absence of the protein unfold agent urea, glassing solvents, such as ethylene glycol and glycerol, and nucleotides, such as ATP. The results …

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Evaluation Of Fish Meal Supplement On Physiological Response And Milking Performance In Lactating Dairy Cattle Under Heat Stress., George Mark Toups Jan 1989

Evaluation Of Fish Meal Supplement On Physiological Response And Milking Performance In Lactating Dairy Cattle Under Heat Stress., George Mark Toups

LSU Historical Dissertations and Theses

Twenty-four mid-lactation heat stressed dairy cows were paired in a completely randomized block design on basis of breed, age, lactation number, calving date, previous mild production and milk fat content in order to evaluate experimental responses. Test treatment was a 50:50 dry matter (DM) corn silage-concentrate diet supplemented with 4.75% DM specially-selected fish meal (FM). Animals were housed under natural summer conditions for the duration of a 70-d experimental period, commencing in mid-June. Low roughage diets were slightly below NRC requirements for both energy and crude protein. DM intake, milk fat content, and milk fat:milk lactose ratio were statistically significant, …

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An Integrated Geophysical Study Of The Northern Gulf Of Mexico: Deep Seismic Reflection Profiling, Seismic Stratigraphy, Gravity Modeling, And Crustal Structure., Mancheol Suh Jan 1989

An Integrated Geophysical Study Of The Northern Gulf Of Mexico: Deep Seismic Reflection Profiling, Seismic Stratigraphy, Gravity Modeling, And Crustal Structure., Mancheol Suh

LSU Historical Dissertations and Theses

Multichannel deep seismic reflection data across a passive continental margin in the northern Gulf of Mexico have been acquired, processed, and interpreted together with three-dimensional gravity modeling. The central Gulf basin is structurally asymmetric from north and south. The northern Gulf is underlain by a 8 to 16 km thickness of sedimentary rocks, significantly greater than the southern Gulf. The top of continental crust occurs at a depth of about 8 km beneath the upper Mississippi-Alabama continental shelf and is characterized by horst and graben structures. The top of oceanic crust occurs at a depth of about 12 km below …

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Muon Pair Production At 52 Gev Less Than-Equal To Sqrt.S. Less Than-Equal To 57 Gev Using The Amy Detector At Tristan., Angelina M. Bacala Jan 1989

Muon Pair Production At 52 Gev Less Than-Equal To Sqrt.S. Less Than-Equal To 57 Gev Using The Amy Detector At Tristan., Angelina M. Bacala

LSU Historical Dissertations and Theses

The reaction e$\sp+$e$\sp-$ $\to$ $\mu\sp+\mu\sp-$ has been observed by the AMY Detector at 52 GeV $\leq$ $\sqrt{s}$ $\leq$ 57 GeV at the TRISTAN storage ring in Tsukuba, Japan. With an integrated luminosity of 18.6 pb$\sp{-1}$, this presents a new test of the standard model of the electroweak interactions in this previously unexplored energy region. The forward-backward charge asymmetry and the cross-section calculated at the various energies show agreement with the standard model predictions. The products of the vector and the axial-vector coupling constants of the electron and muon extracted from these measurements are also consistent with theory. The data were …

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An Experimental And Computational Investigation Of Turbulent Jet Impingement In A Confined Crossflow., Keun Sun Chang Jan 1989

An Experimental And Computational Investigation Of Turbulent Jet Impingement In A Confined Crossflow., Keun Sun Chang

LSU Historical Dissertations and Theses

An experimental and computational investigation is made for the turbulent flow field generated by a jet discharging transversely into a confined moving stream. For jet to cross flow mean velocity ratios (R) equal to 2 and 4, measurements are made using a laser-Doppler velocimeter (LDV) in conjunction with a tracker processor. Quantities measured include mean velocities, turbulence intensities, turbulent shear stress, and dissipation rates of the turbulent kinetic energy. The jet flow Reynolds numbers investigated are 1.5 $\times$ 10$\sp4$ for R = 2 and 3.0 $\times$ 10$\sp4$ for R = 4. The structured nature of the turbulent flow field is …

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Anton Von Webern's String Quartet In A Minor (Ca. 1907), M.121: A Reconstruction., Edwin Lyle Haugan Jan 1989

Anton Von Webern's String Quartet In A Minor (Ca. 1907), M.121: A Reconstruction., Edwin Lyle Haugan

LSU Historical Dissertations and Theses

Webern's String Quartet in A Minor (ca. 1907), M.121 has survived in fair-copy performance parts for violin II and cello and twenty-six pages of sketches. In this study, the score has been reconstructed on the basis of those sources. This intensely expressive composition, which, with 269 measures, is one of Webern's most extensive movements, exhibits great motivic concentration, richly polyphonic texture, and sections in which tonality is suspended. Evidence suggests that it was played under Webern's direction. In Chapter I, the nature and extent of the problems encountered in reconstructing the score are described. Autograph sources are incomplete for some …

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Small Sample Calorimetry, And Specific Heat Of Gadolinium(1)Barium(2-X)Strontium(X)Copper(3)Oxygen(7)., Carter Harrison Watson Jan 1989

Small Sample Calorimetry, And Specific Heat Of Gadolinium(1)Barium(2-X)Strontium(X)Copper(3)Oxygen(7)., Carter Harrison Watson

LSU Historical Dissertations and Theses

The development of an automated small sample (0.5 to 50mg) calorimeter is discussed and evaluated. With this calorimeter, measurements of the specific heat of Gd$\sb1$Ba$\sb{\rm 2-x}$Sr$\sb{\rm x}$Cu$\sb3$O$\sb7$ for x = 0, 0.25, and 0.5 in the temperature range 0.6 to 3 K are reported. Measurements on the x = 0 sample agree with data collected by other groups. In addition, measurements in magnetic fields from 0 to 3 T for the x = 0 sample are reported. In each case a peak in the specific heat at the antiferromagnetic ordering temperature (the Neel temperature) is recorded and analyzed. Strontium doping …

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New Learning And Control Algorithms For Neural Networks., Chung Hwa Youn Jan 1989

New Learning And Control Algorithms For Neural Networks., Chung Hwa Youn

LSU Historical Dissertations and Theses

Neural networks offer distributed processing power, error correcting capability and structural simplicity of the basic computing element. Neural networks have been found to be attractive for applications such as associative memory, robotics, image processing, speech understanding and optimization. Neural networks are self-adaptive systems that try to configure themselves to store new information. This dissertation investigates two approaches to improve performance: better learning and supervisory control. A new learning algorithm called the Correlation Continuous Unlearning (CCU) algorithm is presented. It is based on the idea of removing undesirable information that is encountered during the learning period. The control methods proposed in …

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Molecular Characterization Of Fall Armyworm Mitochondrial-Dna (Spodoptera Frugiperda (J. E. Smith);)., Li Dao Ke Jan 1989

Molecular Characterization Of Fall Armyworm Mitochondrial-Dna (Spodoptera Frugiperda (J. E. Smith);)., Li Dao Ke

LSU Historical Dissertations and Theses

Chapter I. Mitochondrial DNA (mtDNA) was isolated, purified from pooled samples of fall armyworm (FAW), Spodoptera frugiperda, and characterized. The yield of mtDNA from adults ranged from 45 to 114 ng per moth. Entire mtDNA from adult FAW showed 1 to 3 electrophoretic bands when electrophoresed on agarose gels. When digested with SalI or XhoI restriction endonucleases, all DNA forms co-migrated as single bands with the same mobility. XbaI cleaved the mtDNA into three fragments of 8083 $\pm$ 524, 6179 $\pm$ 430, and 1990 $\pm$ 140 base pairs (bp). The FAW mitochondrial genome size was calculated to be 16,253 $\pm$ …

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The Capacity Of Artificial Neural Networks Using The Delta Rule., Donald Louis Prados Jan 1989

The Capacity Of Artificial Neural Networks Using The Delta Rule., Donald Louis Prados

LSU Historical Dissertations and Theses

Over the past several years, several papers have been published on the capacity of Hopfield neural networks. It has been shown that, using the Hebbian rule, the capacity of the Hopfield model is approximately N/4logN. The number of patterns one can store in a neural network, however, can be greatly increased by using learning algorithms other than the Hebbian rule such as the delta rule. The motivation behind this dissertation is to study, both analytically and experimentally, the information capacity of various neural network models using a modified version of the delta-rule algorithm. This modified version of the delta-rule algorithm …

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Effects Of Genetic Traits On Nonlint Trash And Nep Content Of Cotton, Gossypium Hirsutum L., Ricardo Gabriel Novick Jan 1989

Effects Of Genetic Traits On Nonlint Trash And Nep Content Of Cotton, Gossypium Hirsutum L., Ricardo Gabriel Novick

LSU Historical Dissertations and Theses

Gin induced lint quality problems (neps, short fiber content, seed-coat fragments and reductions in lint turnout) need the consideration of the entire cotton production system. Genetic traits could help reduce seed-cotton trash and/or improve cleanability at the gin. Twelve near-isolines involving four leaf shapes (okra, semi-okra, super-okra and normal), two bract types (frego and normal), two leaf-pubescence levels (semi-smoothness and hairy) and certain trait combinations were grown during 1985, 1986, and 1987 at three locations in Louisiana (Alexandria, Bossier City, and St. Joseph), and harvested with a spindle-picker. Seedcotton samples were ginned on a cut-down version of a commercial gin …

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From Forest, Stream, And Sea: Aspects Of Self-Sufficiency In The Nineteenth Century Louisiana Diet. (Volumes I And Ii)., James Patrick Whelan Jr Jan 1989

From Forest, Stream, And Sea: Aspects Of Self-Sufficiency In The Nineteenth Century Louisiana Diet. (Volumes I And Ii)., James Patrick Whelan Jr

LSU Historical Dissertations and Theses

Studies of foodstuff self-sufficiency in the antebellum South have shown that during the middle third of the nineteenth century, as represented by the census years 1840, 1850 and 1860, certain regions of Louisiana suffered from meat production deficits. It has been assumed by most interested scholars that these deficits were overcome by importing pork and beef from the midwest or Upper South. Other possible sources of meat supplements that have not been generally considered are the wild game and fishery resources of the state. Hunting and fishing have long traditions as important activities in the South in general and in …

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The Impact Of Alternative Presentations Of Cash Flows From Operations On The Relevance Of Funds Flow Information., David Walter Cornell Jan 1989

The Impact Of Alternative Presentations Of Cash Flows From Operations On The Relevance Of Funds Flow Information., David Walter Cornell

LSU Historical Dissertations and Theses

Generally accepted accounting procedures allow the use of either the direct or indirect presentation of cash flow from operations in the statement of cash flows. A behavioral study is employed to examine the impact of these alternative presentations on the relevance of the information provided by the statement. Bank loan officers make line of credit and interest rate decisions, and projected cash flow from operations based on a set of financial statements presented in either the direct or indirect format. The study also examines the feedback value of the alternative presentations, which is operationalized as the change in accuracy of …

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The Dismantling Of De Jure Segregation In Louisiana, 1954-1974. (Volumes I And Ii)., Carroll Joseph Dugas Jan 1989

The Dismantling Of De Jure Segregation In Louisiana, 1954-1974. (Volumes I And Ii)., Carroll Joseph Dugas

LSU Historical Dissertations and Theses

In the two decades between 1954 and 1974, the State of Louisiana progressed from a closed, white-dominated society to an open, multi-racial society with legal safeguards in place to assure equal protection and equal opportunity for all residents regardless of race or color. Prior to 1960, the vast majority of blacks were unable to vote, serve on juries, buy homes in decent neighborhoods, use publicly-owned facilities or frequent hotels, restaurants and other public accommodations. In addition to these humiliations, they were required to utilize inadequate "separate but equal" public parks, playgrounds, swimming pools, schools, waiting areas and correctional facilities until …

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Interpretation Of Solid State Deuterium Nmr Spectroscopic Parameters., Kermin Guo Jan 1989

Interpretation Of Solid State Deuterium Nmr Spectroscopic Parameters., Kermin Guo

LSU Historical Dissertations and Theses

Solid-state deuterium NMR spectroscopic parameters including the deuterium quadrupole coupling constant and asymmetry parameter are interpreted in both theoretical and experimental aspects. Ab initio molecular orbital calculations were performed on the alkali metal hydrides, toluene, thymine, acetic acid dimer, and phenylacetic acid molecules with different conformations. In the alkali metal hydrides, the electric field gradient at the hydrogen atom site was calculated in three model systems: terminal metal hydride, bridging metal hydride, and dihydrogen adducts. The effect of metal hydride geometry on the deuterium quadrupole coupling constant was examined. The results can be used in the assignment and interpretation of …

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Isolation, Characterization, And Symbiotic Effectiveness In Soybeans Of Exopolysaccharide Mutants Of Rhizobium Fredii Usda191., Young Hwan Ko Jan 1989

Isolation, Characterization, And Symbiotic Effectiveness In Soybeans Of Exopolysaccharide Mutants Of Rhizobium Fredii Usda191., Young Hwan Ko

LSU Historical Dissertations and Theses

Chapter 1. Production of exopolysaccharides by Rhizobium has been linked with efficient invasion and nodulation of leguminous plant roots by the bacteria. Exopolysaccharide-deficient (exo) mutants of Rhizobium fredii USDA191 were isolated by Tn5-insertion mutagenesis. Five phenotypically unique exo mutants were investigated for exopolysaccharide synthesis and their ability to nodulate soybeans. The exopolysaccharides produced by these mutants were analyzed for polysaccharide composition by column chromatography and thin layer chromatography. Two mutants designated exo3 and exo5 were deficient in both the neutral glucan and exopolysaccharide synthesis, but still made effective nodules on Glycine max cv. Peking, although with decreased efficiency. The remaining …

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Prospect Theory In Governmental Accounting: Implications For The Budgeting Process At The Local Level., Karen Sue Mckenzie Jan 1989

Prospect Theory In Governmental Accounting: Implications For The Budgeting Process At The Local Level., Karen Sue Mckenzie

LSU Historical Dissertations and Theses

Small local governmental units are responsible for allocating resources on behalf of a substantial portion of all United States citizens. The research reported here investigates the effects of presentation format (or framing) on decision preference in a governmental resource allocation context. The subjects represent a population of governmental units which has not received prior research attention--small local governments. Budget preparers were asked to choose among objectively identical alternatives, which differed in presentation formats. The cases used to investigate the effects of presentation were modelled after Kahneman and Tversky's (1979) seminal work in prospect theory, which addressed violations of expected utility …

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Phonological And Language Improvements In Preschool Children: A Comparison Of Phonological Process Targeting And Whole Language Training., Joann Monjure Jan 1989

Phonological And Language Improvements In Preschool Children: A Comparison Of Phonological Process Targeting And Whole Language Training., Joann Monjure

LSU Historical Dissertations and Theses

This study compared phonological and language changes that occurred in preschool phonologically-impaired children following treatment via a discrete phonological process targeting approach or a whole language approach. It was hypothesized that a treatment program utilizing a communication-based, whole language approach would result in improvements in various language domains (e.g., phonology, morphology, syntax, semantics, and pragmatics), while treatment targeting a specific aspect of language, that is, phonology, would result in improvements limited to that specific domain. Subjects were eight preschool children, 3-4 years of age, exhibiting multiple articulation errors, and randomly assigned to one of two intervention programs for a six-week …

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Photochemical Vapor Deposition Of Gallium-Arsenide Utilizing Ultraviolet Radiation., David Paul Norton Jan 1989

Photochemical Vapor Deposition Of Gallium-Arsenide Utilizing Ultraviolet Radiation., David Paul Norton

LSU Historical Dissertations and Theses

Photochemical means have been utilized to deposit arsenic, gallium and gallium arsenide thin films in an attempt to achieve deposition of gallium arsenide at substrate temperatures lower than those utilized in conventional organometallic chemical vapor deposition. Photolysis, Hg-photosensitization and light-driven pyrolysis have been utilized to obtain thin films on quartz, fused silica, gallium arsenide and silicon substrates. Triethylgallium and arsine served as the reactants with a low pressure Hg lamp, a high pressure Hg-Xe arc lamp and an ArF excimer laser serving as the ultraviolet radiation sources. Deposition of arsenic and gallium arsenide thin films on quartz was investigated utilizing …

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Toward An Eschatological Curriculum Theory., George Patrick Slattery Jr Jan 1989

Toward An Eschatological Curriculum Theory., George Patrick Slattery Jr

LSU Historical Dissertations and Theses

This study explores the relationship between eschatology and curriculum theory. Themes such as liberation, emancipatory knowledge, transformative pedagogy, concepts of time, impact of the future on present experience, and learning landscapes are traced in the emerging literature of theology and of curriculum theory. The mutual interest in these themes in both fields of study provides the basis for moving toward an eschatological curriculum theory. The reconceptualization which has occurred in curriculum theory and the new emphasis on eschatology in twentieth century theology both provide a foundation for this curriculum theory rooted in hope. In contemporary theology there is a movement …

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A Comprehensive Methodology For Algorithm Characterization, Regularization And Mapping Into Optimal Vlsi Arrays., Hassan Reda Barada Jan 1989

A Comprehensive Methodology For Algorithm Characterization, Regularization And Mapping Into Optimal Vlsi Arrays., Hassan Reda Barada

LSU Historical Dissertations and Theses

This dissertation provides a fairly comprehensive treatment of a broad class of algorithms as it pertains to systolic implementation. We describe some formal algorithmic transformations that can be utilized to map regular and some irregular compute-bound algorithms into the best fit time-optimal systolic architectures. The resulted architectures can be one-dimensional, two-dimensional, three-dimensional or nonplanar. The methodology detailed in the dissertation employs, like other methods, the concept of dependence vector to order, in space and time, the index points representing the algorithm. However, by differentiating between two types of dependence vectors, the ordering procedure is allowed to be flexible and time …

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Arch: A Robust Construction Heuristic For The Layout Design Of Food Processing Facilities., George Robert Baskin Jan 1989

Arch: A Robust Construction Heuristic For The Layout Design Of Food Processing Facilities., George Robert Baskin

LSU Historical Dissertations and Theses

A Robust Construction Heuristic (ARCH) represents the first attempt to develop a facilities layout design algorithm tailored to the particular solution of the food processing facility layout problem where a fluctuating product mix due to seasonality or changes in consumer demand is typical. The foundation literature for this research comes predominantly from the industrial engineering, management science, and food science fields. Construction heuristics built layouts from scratch and provided poor quality results. Robustness algorithms had no simplifying heuristics but were reported to yield potentially higher quality layouts than traditional algorithms for layout problems with fluctuating product mixes. ARCH was developed …

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The Structural And Functional Roles Of Critical Amino Acid Residues In Drosophila Alcohol Dehydrogenase., Zhuo Chen Jan 1989

The Structural And Functional Roles Of Critical Amino Acid Residues In Drosophila Alcohol Dehydrogenase., Zhuo Chen

LSU Historical Dissertations and Theses

Alcohol dehydrogenase (ADH, alcohol:NAD oxidoreductase, EC1.1.1.1) from Drosophila melanogaster (DmADH) is unique among alcohol dehydrogenases in metal ion requirement, substrate preference, and stereospecificity of hydride transfer. In order to study this unique enzyme, the first part of this dissertation reports the construction and expression of DmADH cDNA in E. coli hosts. The second part of the dissertation shows the structural function of glycine-14 in putative NAD-binding domain of DmADH. The comparison of DmADH to horse liver ADH suggests that glycine-14 in DmADH is located at the first position of a "conserved sequence" which maintains the tight turn structure positioned in …

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A Framework For Efficient Execution Of Logic Programs., Sudharsan R. Iyengar Jan 1989

A Framework For Efficient Execution Of Logic Programs., Sudharsan R. Iyengar

LSU Historical Dissertations and Theses

The focus of this dissertation is to develop an efficient framework for sequential execution of logic programs. Within this framework the logic programs are executed by pruning the goal-search tree whenever applicable. Three new concepts for pruning of computation during execution of logic programs are introduced. (1) Failure-binding. A Failure-binding for a literal is a binding which when applied to the literal fails the goal obtained from the literal. Failure-bindings for a literal are identified by analyzing the goal-tree of a goal which is obtained from the literal. The failure-bindings for a literal are used for intelligent backtracking based on …

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Hypercube-Based Topologies With Incremental Link Redundancy., Shahram Latifi Jan 1989

Hypercube-Based Topologies With Incremental Link Redundancy., Shahram Latifi

LSU Historical Dissertations and Theses

Hypercube structures have received a great deal of attention due to the attractive properties inherent to their topology. Parallel algorithms targeted at this topology can be partitioned into many tasks, each of which running on one node processor. A high degree of performance is achievable by running every task individually and concurrently on each node processor available in the hypercube. Nevertheless, the performance can be greatly degraded if the node processors spend much time just communicating with one another. The goal in designing hypercubes is, therefore, to achieve a high ratio of computation time to communication time. The dissertation addresses …

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The Impact Of Options Listing On The Information Content Of Annual Earnings Announcement., Tinwah Richard Lau Jan 1989

The Impact Of Options Listing On The Information Content Of Annual Earnings Announcement., Tinwah Richard Lau

LSU Historical Dissertations and Theses

The purpose of this study is to determine whether options listing induces additional information acquisition and processing and hence causes a commensurate reduction in the information content of annual earnings announcements. The U-statistic is used to measure the information content of annual earnings announcements. The dissertation tests the options listing effects on four different designs: (i) all exchange (NYSE/AMEX) firms, (ii) large exchange firms versus small exchange firms, (iii) positive unexpected earnings firms versus negative unexpected earnings firms, and (iv) all over-the-counter firms. The research found that, after options listing, the U-statistic of the exchange firms decreases significantly during the …

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An Examination Of The Effect Of Financial Risk On The Manager's Choice Of Accounting Methods., Linda Marie Nichols Jan 1989

An Examination Of The Effect Of Financial Risk On The Manager's Choice Of Accounting Methods., Linda Marie Nichols

LSU Historical Dissertations and Theses

This study examines the effect of the firm's level of financial risk on management's preference for full-cost or successful-efforts accounting in the oil and gas industry. Agency theory predicts that firms with increasing levels of financial risk have an incentive to switch to an accounting method which tends to increase net tangible assets and which creates more stable earnings in order to avoid technical default on loan covenants. Therefore, it is expected that successful-efforts firms with increasing levels of financial risk will tend to switch to use the full-cost accounting method. Past studies have used leverage as a surrogate for …

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Relative Efficacy Of Treatment Strategies For Functional Misarticulation In Preschool Children: Sensory-Motor And Cognitive Approaches., Elizabeth Lathrop Phelan Jan 1989

Relative Efficacy Of Treatment Strategies For Functional Misarticulation In Preschool Children: Sensory-Motor And Cognitive Approaches., Elizabeth Lathrop Phelan

LSU Historical Dissertations and Theses

The present study investigated learning rate differences relative to number of sessions necessary to reach a terminal criterion on /s/ production accuracy by four pre-school functional misarticulators under two different treatment approaches; a sensory motor approach and a cognitive-communicative approach. Phonetic transcriptions of the misarticulator's productions of a forty item word and connected speech generalization probe administered continuously over treatment was used to determine percentage of correct productions. Probe items included /sC-/, /sCV-/, /-Vs/, and /-VCs/ single syllable word shapes. These four and five year old misarticulating subjects who produced stop consonants for (s) were also compared with four normal …

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Syntheses Of Organometallic Platinum(Ii), Platinum(Iv), And Palladium(Ii) Complexes And Methyl Functionalization Of 2-Methyl- And 2,7-Dimethyl-1,8-Naphthyridine., Kevin J. Theriot Jan 1989

Syntheses Of Organometallic Platinum(Ii), Platinum(Iv), And Palladium(Ii) Complexes And Methyl Functionalization Of 2-Methyl- And 2,7-Dimethyl-1,8-Naphthyridine., Kevin J. Theriot

LSU Historical Dissertations and Theses

The syntheses of several new metalated and cyclometalated organoplatinum(II) complexes of $C$-malonato ligands have been accomplished. These complexes were characterized by $\sp1$H and $\sp{13}$C NMR and IR. The trans cyclometalated complexes utilized pyridinyl ligands possessing pendant groups at the 2-position with terminal malonate groups capable of forming either a five- or six-membered $C,N$-chelate. X-ray crystal structure determinations of these cyclometalated complexes were also done. The acyclic cis complexes are $N,N\sp\prime$-chelates of dipyridine or phenanthroline in which platinum is bonded to the central carbons of two different dimethyl malonate ligands. These $N,N\sp\prime$-chelates were easily oxidized by either Br$\sb2$ or Cl$\sb2$ to …

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