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Geology, Volcanology, And Petrology Of Cerro Bravo, A Young, Dactic, Stratovolcano In West-Central Colombia, David Tondl Lescinsky Apr 1990

Geology, Volcanology, And Petrology Of Cerro Bravo, A Young, Dactic, Stratovolcano In West-Central Colombia, David Tondl Lescinsky

LSU Historical Dissertations and Theses

The northernmost active Andean volcano, Cerro Bravo is a small, young, and very explosive stratovolcano. Cerro Bravo has produced voluminous tephra deposits, that are found> 30 km away, as well as, pumice flow deposits, block and ash flow deposits, and high-aspect lava flows, which are found proximally to the volcano. There have been eight episodes of activity during the past 6250±110 years (Herd, 1982), with the most recent <200 years ago and the present being a period of quiescence with no visible activity or thermal manifestations. Stratigraphic relationships suggest the occurrence of an initial explosive phase and a concluding effusive phase of activity during individual episodes. The products of volcanic activity at Cerro Bravo are a chemically and mineralogically monotonous suite of medium-K dacite and high-silica andesite (59.2- 67.5% SiO2 pumices and lavas. The dominant phenocrysts present are plagioclase and hornblende (oxyhomblende in lavas) with lesser quantities of orthopyroxene, titanomagnetite, and rare augite and biotite also present. Petrology and eruption dynamics …

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Faculty Senate Resolution 89-12, Louisiana State University And Agricultural & Mechanical College Mar 1990

Faculty Senate Resolution 89-12, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution concerning a bylaws amendment re-establishing a public relations committee, adopted on March 14, 1990.

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Open And Closed Systems In Data Analysis Entropy., Hamid Reza Jafari Jan 1990

Open And Closed Systems In Data Analysis Entropy., Hamid Reza Jafari

LSU Historical Dissertations and Theses

This dissertation presents an efficient and integrated approach to data analysis. Entropy data analysis is an evolution of reconstructability analysis, which investigates the relationships between parts and wholes. The central theme of the dissertation is the development of a system to condense the information in a data set into a small number of parameters. The new system is called a k-system. k-system analysis goes beyond traditional data analysis in that it has the potentiality for changes to be made to a system; and the impact of these changes can be evaluated. k-system can be useful in designing and evaluating open …

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Political Rationality And Irrationality: The Case Of The Lebanese Forces., Leila El-Tawil Sarieddine Jan 1990

Political Rationality And Irrationality: The Case Of The Lebanese Forces., Leila El-Tawil Sarieddine

LSU Historical Dissertations and Theses

Rationalist theories of coalition formation have centered on one and only one principle: that individual conduct is totally determined by the endeavor to relate means to ends as efficiently as possible. Specifically, the theory holds that human conduct is wholly determined by rationality. Rationalist political theory is extremely useful for gaining insight into the field of coalition formation and maintenance. Work on coalitions often in turn derives from n-person game theory. It has attempted to predict the formation of coalitions, distribution of spoils, and the allocation of power among major social groups in divided societies. Rational choice theory suggests that …

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A New Chloroplast Protein Is Induced By Growth On Low Co2 In Chlamydomonas Reinhardtii, Catherine B. Mason, Livingston J. Manuel, James V. Moroney Jan 1990

A New Chloroplast Protein Is Induced By Growth On Low Co2 In Chlamydomonas Reinhardtii, Catherine B. Mason, Livingston J. Manuel, James V. Moroney

Faculty Publications

The biosynthesis of a 36 kilodalton polypeptide of Chlamydomonas reinhardtii was induced by photoautotrophic growth on low CO2. Fractionation studies using the cell-wall-deficient strain of C. reinhardtii, CC-400, showed that this polypeptide was different from the low CO2-induced periplasmic carbonic anhydrase. In addition, the 36 kilodalton polypeptide was found to be localized in intact chloroplasts isolated from low CO2-adapting cultures. This protein may, in part, account for the different inorganic carbon uptake characteristics observed in chloroplasts isolated from high and low CO2-grown C. reinhardtii cells.

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Distribution And Rate Of Methane Oxidation In Sediments Of The Florida Everglades, G. M. King, P. Roslev, H. Skovgaard Jan 1990

Distribution And Rate Of Methane Oxidation In Sediments Of The Florida Everglades, G. M. King, P. Roslev, H. Skovgaard

Faculty Publications

Rates of methane emission from intact cores were measured during anoxic dark and oxic light and dark incubations. Rates of methane oxidation were calculated on the basis of oxic incubations by using the anoxic emissions as an estimate of the maximum potential flux. This technique indicated that methane oxidation consumed up to 91% of the maximum potential flux in peat sediments but that oxidation was negligible in marl sediments. Oxygen microprofiles determined for intact cores were comparable to profiles measured in situ. Thus, the laboratory incubations appeared to provide a reasonable approximation of in situ activities. This was further supported …

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Cenobium 1990, Louisiana State University And Agricultural And Mechanical College, School Of Veterinary Medicine, Terry Doyle Jan 1990

Cenobium 1990, Louisiana State University And Agricultural And Mechanical College, School Of Veterinary Medicine, Terry Doyle

Cenobium Yearbook

Cenobium began publication in 1977 and continued through 1990. Produced by students, the yearbooks are a chronicle of the daily life and the special events experienced by veterinary students at the LSU School of Veterinary Medicine.

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The Incidence Of Vibrio Species In Louisiana And Maryland Oysters (Crassostrea Virginica)., Mary Lynelle Ford Jan 1990

The Incidence Of Vibrio Species In Louisiana And Maryland Oysters (Crassostrea Virginica)., Mary Lynelle Ford

LSU Historical Dissertations and Theses

Vibrio species, normal inhabitants of the sea and of shellfish harvested from marine or brackish waters, have been established as the causative agents of serious human infections. An investigation to isolate and identity Vibrio species in oysters collected from eight Louisiana commercial oyster beds was conducted. A selection of 127 vibrio isolates and 46 reference strains, including all known Vibrio species, were subjected to a bacteriological identification scheme of 46 parameters. When the data from the wild strains and the reference strains were analyzed by the numerical taxonomy program, TAXAN Version 3.0, six major phena were evident. Four of the …

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Relational Aftermath: Accounts Of Marital Dissolution To Social Network Members., Linda Malone Pledger Jan 1990

Relational Aftermath: Accounts Of Marital Dissolution To Social Network Members., Linda Malone Pledger

LSU Historical Dissertations and Theses

Relationship dissolution is a complex process that involves more than the act of termination. The process affects and is affected by an individual's communication with members of the social network. The attributions made by the individual to account for the dissolution constitute an attempt at failure management. This study was undertaken to determine how the strategies used to manage the failure event of divorce vary according to social network groups, gender, and expectation of approval. One hundred eleven divorced individuals completed questionnaires soliciting recollection of accounts made to family, friends, and acquaintances regarding their divorce. Findings include (1) excuses were …

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The Use Of Cell Culture Systems To Improve Bovine Embryo Viability In Vitro., Stephen Harry Pool Jan 1990

The Use Of Cell Culture Systems To Improve Bovine Embryo Viability In Vitro., Stephen Harry Pool

LSU Historical Dissertations and Theses

Growth characteristics for fetal bovine uterine fibroblast cells (FBUFC) and frozen-thawed bovine (b) and caprine (g) trophoblastic vesicles (TV) were similar in (A) Ham's F-10 (HF-10), (B) MEM (with Earle's salts), (C) RPMI-1640 and (D) Menezo's B$\sb2$ (B$\sb2$), each supplemented with 10% FCS and Ab-Am (Experiment (Exp) I). Cell numbers declined initially but increased linearly thereafter for 5 days. The bTV and gTV that survived freezing had similar viability across time and Treatments (Trt). Exp II compared the (A) bTV, (B) FBUFC monolayer and (C) bTV-monolayer co-culture systems to (D) HF-10 alone for culture of 8- to 32-cell bovine embryos. …

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Ernest Guiraud: A Biography And Catalogue Of Works., Daniel O. Weilbaecher Jan 1990

Ernest Guiraud: A Biography And Catalogue Of Works., Daniel O. Weilbaecher

LSU Historical Dissertations and Theses

Ernest Guiraud (1837-1892) was born in New Orleans, where he received his early musical training from his parents, both graduates of the Paris Conservatoire. His father, Jean-Baptiste Guiraud, had won the Prix de Rome in 1827. Ernest's first opera, David, was staged at the Theatre d'Orleans in April 1853. Later that year Ernest entered the Paris Conservatoire; he studied piano with Marmontel, harmony with Barbereau, and composition with Halevy. He won the Prix de Rome in 1859. During the three years (1860-1862) Guiraud spent in Italy as a Prix de Rome laureate, he composed a mass, an opera-buffa (Gli avventurieri), …

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Geochemistry And Origin Of Smackover And Buckner Dolomites (Upper Jurassic), Jay Field Area, Alabama - Florida., Marshall J. Vinet Jan 1990

Geochemistry And Origin Of Smackover And Buckner Dolomites (Upper Jurassic), Jay Field Area, Alabama - Florida., Marshall J. Vinet

LSU Historical Dissertations and Theses

The Smackover-Buckner sequence in the Jay-Big Escambia Creek area has three major lithostratigraphic units: lower Smackover, upper Smackover, and Buckner with an uppermost Smackover transitional sequence. The lower Smackover is regionally extensive, mostly low energy subtidal to intertidal, dolomitized packstones with abundant displacive anhydrite nodules. The upper Smackover is characterized by thick oolite-peloid high energy grainstone buildups generated over Louann salt induced bathymetric highs which were surrounded by areas of low energy, subtidal mudstones-wackestones. The Buckner is mostly nodular mosaic anhydrite with minor amounts of dolomite mudstones-packstones. Below the Smackover-Buckner contact in the grainstone areas is a transitional sequence (referred …

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The Effects Of The Discussion Of And The Drawing Of Political Cartoons As Prewriting Activities To Increase Fifth And Sixth-Graders' Ability To Write Persuasively., Douglas Mark Granier Jan 1990

The Effects Of The Discussion Of And The Drawing Of Political Cartoons As Prewriting Activities To Increase Fifth And Sixth-Graders' Ability To Write Persuasively., Douglas Mark Granier

LSU Historical Dissertations and Theses

The effects of the discussion of and the drawing of political cartoons as prewriting activities to increase fifth and sixth graders' ability to write persuasively were investigated. The subjects were 53 males and 49 females from two fifth grade and two sixth grade classes in a university laboratory school. The study was a randomized, pretest-posttest control group design with two treatment groups (discussion of political cartoons and drawing of political cartoons) and two control groups (discussion of a topic and drawing about a topic). Stratified random placement based on pretest scores enabled formation of four groups of approximately equal ability. …

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The Effect Of Olivocochlear Bundle Transection On Cochlear Mechanics., Thomas Allen Littman Jan 1990

The Effect Of Olivocochlear Bundle Transection On Cochlear Mechanics., Thomas Allen Littman

LSU Historical Dissertations and Theses

A growing body of research suggests that the efferent innervation to the cochlea, the olivocochlear bundle, plays a role in modulating the mechanical function of the cochlea. Some of the more provocative findings supporting an hypothesis of OCB modulation have come from studies which assessed efferent influences on tuning curves and acoustic distortion products, two measures thought to be sensitive indicators of cochlear mechanical function. While the OCB appears to be capable of modifying cochlear mechanics, the functional role attributed to the efferents has been difficult to define. For example, some studies which have transected all or part of the …

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Fast Parallel Algorithms On A Class Of Graph Structures With Applications In Relational Databases And Computer Networks., Sridhar Radhakrishnan Jan 1990

Fast Parallel Algorithms On A Class Of Graph Structures With Applications In Relational Databases And Computer Networks., Sridhar Radhakrishnan

LSU Historical Dissertations and Theses

The quest for efficient parallel algorithms for graph related problems necessitates not only fast computational schemes but also requires insights into their inherent structures that lend themselves to elegant problem solving methods. Towards this objective efficient parallel algorithms on a class of hypergraphs called acyclic hypergraphs and directed hypergraphs are developed in this thesis. Acyclic hypergraphs are precisely chordal graphs and their subclasses, and they have applications in relational databases and computer networks. In this thesis, first, we present efficient parallel algorithms for the following problems on graphs. (1) determining whether a graph is strongly chordal, ptolemaic, or a block …

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Factors Affecting Conceptus Loss In Cattle., Daniel Patrick Ryan Jan 1990

Factors Affecting Conceptus Loss In Cattle., Daniel Patrick Ryan

LSU Historical Dissertations and Theses

In the first experiment, the temperature humidity index (THI) was compared with pregnancy rates (PR) in bovine females under two different environmental cooling systems. The PR decreased if the THI was greater on the second day prior to or after mating compared with that of the day of mating. In the second experiment, the stages of embryo mortality in the first 40 days of gestation were identified in the hot and cool seasons of the year. At day 13 or 14 of pregnancy 27% of embryos were viable in the hot months, which was less than 60% at day 13 …

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Sugarcane Pollen Viability And Seed Setting As Affected By Daylength Decline Rates And Relative Humidity., Adel Mostafa Abou-Salama Jan 1990

Sugarcane Pollen Viability And Seed Setting As Affected By Daylength Decline Rates And Relative Humidity., Adel Mostafa Abou-Salama

LSU Historical Dissertations and Theses

The effects of daylength decline rates and relative humidity levels and durations on pollen viability and seed setting of sugarcane (Saccharum spp.) were investigated. Two studies were carried out at St. Gabriel Research Station of the Louisiana Agricultural Experiment Station. Daylength decline rates of one half and one minute per day were studied on 354 crosses made within three years using 54 males and 92 females. Males treated with one half minute daylength decline rate had higher pollen viability. Seed production was not affected by the treatments. Varietal differences were found responsible for most of the variation obtained. The two …

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The Epistemic Power Of Metaphor: A Rhetorical Model For Homiletics., Rodney Kennedy Jan 1990

The Epistemic Power Of Metaphor: A Rhetorical Model For Homiletics., Rodney Kennedy

LSU Historical Dissertations and Theses

This study analyzes the symbiotic relationship between rhetoric and homiletics. The proposed interface between the two disciplines is metaphor. Contemporary research on metaphor in philosophy, rhetoric, sociology, and theology is employed to produce a rhetorical/metaphorical homiletics. A deconstruction of classical homiletics traces the basic preaching model to a Cartesian philosophical starting point. The nature of the Christian scriptures as metaphorical and of Christian liturgy as symbolic is alien to the rational, objective homiletics. An examination of Christian worship as a rhetorical event includes the elements of the theory of rhetoric developed by Michel Foucault: discursive practices, rules, roles, knowledge, and …

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Intrinsic Intertextuality:A Methodology For Analyzing The Seamless Intertext., Karen Sue Mitchell Jan 1990

Intrinsic Intertextuality:A Methodology For Analyzing The Seamless Intertext., Karen Sue Mitchell

LSU Historical Dissertations and Theses

This study argues for a methodology that applies contemporary theories of literature and performance to a certain kind of performance script I call a seamless intertext. Working deductively from theory to dramatic text, I explore what selected portions of extant performance and textual theory have to offer in examining, describing, and explaining these seamless intertexts. Working inductively from dramatic text to theory, I extend and offer further clarification and an extension of current theory through a more detailed explanation of the scripting explicit in each dramatic text. In the study I synthesize existing theory in intertextuality and define and describe …

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A History Of Rudimental Drumming In America From The Revolutionary War To The Present., Eric Alan Chandler Jan 1990

A History Of Rudimental Drumming In America From The Revolutionary War To The Present., Eric Alan Chandler

LSU Historical Dissertations and Theses

Rudimental drumming gained significance in America during the period of the Revolution. Ever since the late eighteenth-century and through the nineteenth-century, it was used exclusively in the military. This study traces the migration of drum rudiments and their use in military settings from Great Britain to America. The contributions of the Swiss drummers and the incorporation of their drum music into American rudimental drumming are also examined. The introductory chapter covers related pertinent and prefatory topics such as a definition of rudimental drumming, the duties of the military drummer, non-rudimental types of drumming and a summary of the origin and …

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Tetracycloalkenyl-Meso-Tetraphenylporphyrins As Models For The Effect Of Non-Planarity On The Light Absorption Properties Of Photosynthetic Chromophores, Craig J. Medforth, M. Dolores Berber, Kevin M. Smith, John A. Shelnutt Jan 1990

Tetracycloalkenyl-Meso-Tetraphenylporphyrins As Models For The Effect Of Non-Planarity On The Light Absorption Properties Of Photosynthetic Chromophores, Craig J. Medforth, M. Dolores Berber, Kevin M. Smith, John A. Shelnutt

Faculty Publications

As the size of the cycloalkenyl ring in synthetic C5-C7 tetracycloalkenyl-meso-tetraphenylporphyrins (TCnTPP) is increased the porphyrin core changes from planar to non-planar, showing that porphyrins with well-defined degrees of ruffling can be synthesized for use in systematic studies to determine the effects of non-planarity. © 1990.

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Dynamics And Controls Of Methane Oxidation In A Danish Wetland Sediment, Gary M. King Jan 1990

Dynamics And Controls Of Methane Oxidation In A Danish Wetland Sediment, Gary M. King

Faculty Publications

Abstract The patterns and controls of methane oxidation in a Danish wetland sediment have been determined using a combination of slurry and intact core techniques. Results from slurries indicated that methane oxidation was effectively inhibited by low concentrations of nitrapyrin (9 μM) and acetylene (0.5 μM) but that oxidation was relatively insensitive to pH between 6 and 8; in addition, high concentrations of ammonia (1 mM) decreased oxidation, especially at alkaline pH. Kinetic analyses of methane oxidation in slurries indicated that Vmax was high relative to values reported for other sediments, that Vmax changed seasonally, that Km was consistently low …

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Theoretical And Pedagogical Applications Of Discourse Analysis To Professional Writing., Kim Sydow Campbell Jan 1990

Theoretical And Pedagogical Applications Of Discourse Analysis To Professional Writing., Kim Sydow Campbell

LSU Historical Dissertations and Theses

This dissertation attempts to show the utility of discourse analysis for professional writing. The articles collected here fall into three categories: Chapter One provides an overview of the need for a discourse analysis approach in writing research; Chapters Two and Three demonstrate applications of Speech Act Theory to problems in tone; and Chapters Four, Five and Six suggest the role that cohesion and coherence play in professional writing. Chapter One notes that, with the emphasis on process, discourse based research has largely fallen out of favor with writing specialists. Despite this lack of enthusiasm, this chapter demonstrates the importance of …

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Lévy Laplacian Of Generalized Functions On A Nuclear Space, Hui Hsiung Kuo, Nobuaki Obata, Kimiaki Saitô Jan 1990

Lévy Laplacian Of Generalized Functions On A Nuclear Space, Hui Hsiung Kuo, Nobuaki Obata, Kimiaki Saitô

Faculty Publications

The Lévy Laplacian ΔF(ξ) = limN→∞N-1∑n = 1N 〈F″(ξ),en⊗ en〉 is shown to be equal to (i) ∝TF″s″(ξ;t)dt, where Fs″ is the singular part of F″, and (ii) 2limρ{variant}→0ρ{variant}-2(MF(ξ,ρ{variant})-F(ξ)), where MF is the spherical mean of F. It is proved that regular polynomials are Δ-harmonic and possess the mean value property. A relation between the Lévy Laplacian Δ and the Gross Laplacian ΔGF(ξ) = ∑n = 1∞=〈F″(ξ),en⊗ en〉 is obtained. An application to white noise calculus is discussed. © 1990.

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A Characterization Of A Class Of Non-Binary Matroids, James G. Oxley Jan 1990

A Characterization Of A Class Of Non-Binary Matroids, James G. Oxley

Faculty Publications

A well-known result of Tutte is that U2,4, the 4-point line, is the only non-binary matroid M such that, for every element e, both Mβe and M e, the deletion and contraction of e from M, are binary. This paper characterizes those non-binary matroids M such that, for every element e, Mβe or M e is binary. © 1990.

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Lsu General Catalog 1990-1991, Louisiana State University And Agricultural And Mechanical College Jan 1990

Lsu General Catalog 1990-1991, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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Sympathy, Gender, And The Writing Of Value In Late Eighteenth Century English Letters., Lucinda Cole Jan 1990

Sympathy, Gender, And The Writing Of Value In Late Eighteenth Century English Letters., Lucinda Cole

LSU Historical Dissertations and Theses

This study of sympathy is best described as an historically-grounded feminist critique in response to a contemporary critical debate. Recently, "sympathy," "compassion," and "care" have been promoted by many scholars interested in positing alternatives to a clearly masculinist ethical tradition derived from Kant, Hegel, and others. Yet missing from this work is a critical examination of the ethical tradition extending from Hume's writings in the eighteenth century to Max Scheler's in our own. My major purpose within this context is to demonstrate how sympathy functions as a major term in systems of value no less male-biased than the ethics of …

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Authorial Introductions: Presentations Of The Self As Author In Prefaces And Autobiographies. (Volumes I And Ii)., Laurie Frances Leach Jan 1990

Authorial Introductions: Presentations Of The Self As Author In Prefaces And Autobiographies. (Volumes I And Ii)., Laurie Frances Leach

LSU Historical Dissertations and Theses

This dissertation examines the prefaces and autobiographies of creative writers as "authorial introductions," textual spaces in which writers present themselves to their readers as authors. It consists of three main parts. Part One concerns autobiographical prefaces by two writers, Nathaniel Hawthorne and Mary Shelley, who did not write autobiographies and who were defensive about the autobiographical content of their prefaces. Both writers were ambivalent about authorship and hesitant about bringing themselves "forward in print," but within the limits of their prefaces, they were able to speak autobiographically and portray themselves as authors. Part Two examines the autobiographies and prefaces of …

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Assessment Of Social Competence In Populations Of Learning-Disabled, Behaviorally Disordered And Normal Adolescents., Teresa Jo Scardino Jan 1990

Assessment Of Social Competence In Populations Of Learning-Disabled, Behaviorally Disordered And Normal Adolescents., Teresa Jo Scardino

LSU Historical Dissertations and Theses

The present investigation was designed to examine normal vs. impaired adolescents' social competence according to self, teacher, and parent report. Although the importance of social competence has been established with child and adult populations, few studies have assessed social competence of adolescents. Social competence of learning disabled (LD), behaviorally disordered (BD), and regular education (RE) adolescents was assessed. Nineteen BD, 20 LD, and 66 RE completed self-report measures of social skills and perceived communication/conflict with parents, and sociometric rankings of peers. Teachers of each participating student completed a teacher report measure of the adolescent's social skill, and parents of each …

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The Effect Of Severity Of Closed Head Injury On Memory Functioning., Linda Marie Brown Jan 1990

The Effect Of Severity Of Closed Head Injury On Memory Functioning., Linda Marie Brown

LSU Historical Dissertations and Theses

This study was undertaken to examine the relationship between neuroanatomy of memory, the structural mechanics of closed head injury and the resulting effects on memory functioning. The experimental groups were composed of 30 closed head injured individuals equally divided by severity of injury based on posttraumatic amnesia (PTA). The first group included 15 mild head injured patients whose PTA was defined as less than 60 minutes. Group two was composed of 15 severely head injured patients whose PTA was greater than 24 hours. The comparison group consisted of 15 non-head injured volunteers matched to the experimental group by age, gender, …

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