Digital Commons Network^™

Selective Information Processing Of Body Size And Food Related Stimuli In Women Who Are Preoccupied With Body Size., Richard Daniel Fuller

LSU Historical Dissertations and Theses

Overconcern or preoccupation with body size and weight is a central psychopathological feature of the eating disorders. The overconcern with body size is considered to be a function of fear of weight gain or "fear of fatness". Cognitive theories of psychopathology have hypothesized that fear results in an increased activation of cognitive structures associated with the feared object. This increased activation (priming) is hypothesized to enhance the processing of information related to the feared object. This study tested this hypothesis using a lexical decision task. Individuals with extreme body size preoccupation were evaluated for a selective information processing of body …

Physiological Variation In Loblolly Pine (Pinus Taeda L.) As Related To Crown Position And Stand Density., Dennis Albert Gravatt

LSU Historical Dissertations and Theses

Physiological parameters were measured under natural light conditions and needle orientation from towers and walkways erected in the crowns of loblolly pine (Pinus taeda L.) trees. Photosynthetic light response curves, chlorophyll content, nutrient content and specific leaf area were determined for current-year foliage on detached branches. Two silvicultural treatments were randomly assigned to the twelve plots in the fall of 1988. Plots were thinned to a density of 731 trees per hectare or left unthinned, at a density of 2990 trees per hectare. The plots were left unfertilized or fertilized with 744 kg per hectare of diammonium triple superphosphate was …

Interactions Of Mouse And Bovine Preimplantation Embryos Prior To And After The In Vitro Developmental Block Stage., Leyi Li

LSU Historical Dissertations and Theses

The objective of the present study was to evaluate the effect of post-block mouse and bovine embryos on the development of pre-block embryos around the in vitro developmental block stage. The effect of the post-block embryos on the development of the pre-block embryos was evaluated in culture, in chimeras and in cytoplasmic hybrid embryos. The results indicate that post-block embryos were able to stimulate the development of the pre-block embryos in culture. The stimulatory effect of the post-block mouse and bovine embryos was found not to be species-specific and was synergistic with that of bovine granulosa cells. Chimeric parthenogenetic bovine …

A Step In The "Wright" Direction: Mapping The Structural Locations Of The "New Class"., David Emile Maurer

LSU Historical Dissertations and Theses

Stratification researchers have directed their efforts toward tracing the emergence of and speculating about the composition of a New Class which is forming as American capitalism expands. In their endeavors, three sets of theories occupy center stage: Expert New Class theory, Managerial New Class theory, and New Working Class theory. To empirically test each of these theories, the 1991-1992 Class and Class Consciousness data set were employed. Of the three sets of theories, Managerial New Class models offer the most promise for future research and explaining the changing nature of the American social structure. Moderate support is also provided for …

Error Correction In Second-Year Students' Compositions: A Comparative Study Of Native And Non-Native Speakers/Instructors Of French., Catherine Annie Jolivet

LSU Historical Dissertations and Theses

The purpose of this dissertation was to determine whether or not there are differences between native and non-native speakers/instructors of French when they correct second year students' compositions. The research questions this study set forth to answer are: (1) Are there any differences in the number of corrections performed by native and non-native speakers/instructors of university intermediate French classes when they evaluate compositions? (2) Are there any differences between native and non-native speakers/instructors in the categories (verb, noun, spelling, other) where error correction was performed? (3) Are there any differences between native and non-native speakers/instructors when and if they paid …

The Role Of Infaunal And Epifaunal Suspension Feeding Macrofauna On Rates Of Benthic-Pelagic Coupling In A Southeastern Estuary., Christine Miller-Way

LSU Historical Dissertations and Theses

This research investigated the effects of two suspension feeding bivalves, the infaunal Rangia cuneata, and the epifaunal Crassostrea virginica, on benthic-pelagic coupling in Fourleague Bay, LA, a river-dominated estuary. A continuous-flow microcosm system was developed to overcome recognized limitations of batch methodology and to facilitate manipulations designed to investigate the ecological role of benthic macrofauna. Experiments comparing traditional batch methodology to continuous-flow methodology indicated that rates of benthic processes were consistently greater when measured using continuous-flow methodology. Examinations of concentrations indicated that differences were due to concentration gradients which departed from ambient over time in the batch cores. Over an …

Controls On The Sedimentary And Subsidence History Of An Active Plate Margin: An Example From The Tonga Arc (Southwest Pacific), P. D. Clift

Faculty Publications

Provides a record of the sedimentary evolution of the active margin of the Indo-Australian Plate from late Eocene time to the present. Facies analyses of the sediments, coupled with interpretations of downhole Formation MicroScanner logs, allow the complete sedimentary and subsidence history of each site to be reconstructed. The forearc region of the Tofua Arc (Site 841) can be seen to have experienced an initial period of tectonic subsidence dating from 3.5 Ma. Subsidence has probably been gradual since that time, with possible phases of accelerated subsidence, starting at 16.2 and 10.0 Ma. The Tonga Platform (Site 840) records only …

The Impact Of Contextual Variables On The Propensity Of Individual Employees To Withhold Effort: A Multi-Organization Analysis., Roland E. Kidwell Jr

LSU Historical Dissertations and Theses

This dissertation synthesizes theory and research in economics, social psychology, sociology and management to present and test a model of employee propensity to withhold effort (PWE) in work groups in 10 organizations. The dissertation extends to work organizations Knoke's (1990) synthesized motivation model, which suggests that rational, normative conformity and affective bonding incentives act together to predict whether people will contribute to collective activities. A study of 570 private-sector employees found that when employees perceived high degrees of task visibility, group effort norms, equity and altruism, they would be less likely to withhold effort in job-related tasks. As predicted, payment …

The Effect Of Verbal Elaborations On Memory In Young And Older Adults, Katie E. Cherry, Denise C. Park, David A. Frieske, Renee L. Rowley

Faculty Publications

The Stein paradigm was used to examine the circumstances under which verbal elaborations enhance memory in young and older adults. Subjects studied target adjectives that were embedded in one of three sentence contexts that varied in elaboration of the subject-adjective relationship: (1) nonelaborated base sentences; (2) base sentences with semantically consistent, but arbitrary verbal, elaborations; and (3) base sentences with explanatory verbal elaborations that clarified the significance of the subject-adjective relationship. The presence of the elaborations was varied at encoding and retrieval, and cued recall of the target adjectives was tested with incidental and intentional learning procedures. In Experiments 1A …

Observation Of Events With A Large Rapidity Gap In Deep Inelastic Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, J. Repond, S. Repond, R. Stanek, R. L. Talaga, J. Thron, F. Arzarello, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, F. Ciralli, A. Contin, S. D'Auria, C. Del Papa, F. Frasconi, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, Q. Lin

Faculty Publications

In deep inelastic, neutral current scattering of electrons and protons at s=296 GeV, we observe in the ZEUS detector events with a large rapidity gap in the hadronic final state. They occur in the region of small Bjorken x and are observed up to Q2 of 100 GeV2. They account for about 5% of the events with Q2≥10 GeV2. Their general properties are inconsistent with the dominant mechanism of deep inelastic scattering, where color is transferred between the scattered quark and the proton remnant, and suggest that the underlying production mechanism is the diffractive dissociation of the virtual photon. © …

Collaborative Writing In Petroleum Engineering: A Case Study Of Petroleum Engineers In An Academic Setting, Michael Anne Coffey

LSU Historical Dissertations and Theses

Interest in collaborative writing has surged in composition studies since the mid-tolate 1980s; aspects addressed include motivation, the composing process, the kinds of participants, authorship, conflict, etc. Much composition research concentrates on collaboration in the workplace to gain an understanding of collaborative writing that can be readily transferred to the classroom and that can prepare students for the social, as opposed to solitary, act of writing—to encourage collaborative thought. In this study, I attempted to find out more about what occurs in the stages (prewriting, writing, post-writing) of collaborative writing. My subjects were petroleum engineers on university campuses. Departments were …

An Economic Analysis Of Waterfowl Hunting In Louisiana (Bulletin #841), Christopher Ec Gan, E. Jane Luzar

LSU AgCenter Bulletins

Waterfowl-related activities generate millions of dollars for Louisiana’s economy annually, with duck and goose hunting as one of the most significant sporting activities. Economic information on the characteristics that influence the decision to hunt waterfowl can provide valuable information to resource managers faced with declining waterfowl populations as well as declining numbers of waterfowl hunters.

Cone Penetration In Cemented Deposits-A Field Study, Semih Arslan

LSU Historical Dissertations and Theses

Neglecting cementation results in an underestimation of slope stability and pile capacity in design and analysis of geotechnical engineering problems related to cemented deposits. Developing methods to identify and assess the engineering characteristics of cemented deposits is an important subject in geotechnical engineering.

This study is conducted to evaluate the reliability of the prediction schemes proposed by previous investigators through a field study of cone penetration in a cemented deposit and respective laboratory triaxial study on undisturbed cemented specimens. The effect of cementation on cone penetration resistance is investigated through the field study, and the effects of cementation on drained …

Initial Study Of Deep Inelastic Scattering With Zeus At Hera, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, J. Repond, S. Repond, R. Stanek, R. L. Talaga, J. Thron, F. Arzarello, R. Ayad, G. Barbagli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, F. Ciralli, A. Contin, S. D'Auria, C. Del Papa, F. Frasconi, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi

Faculty Publications

Results are presented on neutral current, deep inelastic scattering measured in collisions of 26.7 GeV electrons and 820 GeV protons. The events typically populate a range in Q2 from 10 to 100 GeV2. The values of x extend down to x ∼ 10-4 which is two orders of magnitude lower than previously measured at such Q2 values in fixed target experiments. The measured cross sections are in accord with the extrapolations of current parametrisations of parton distributions. © 1993.

Louisiana Agriculture Magazine, Spring 1993, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Endogenous Retinoids In Rat Epididymal Tissue And Rat And Human Spermatozoa, R. S. Pappas, M. E. Newcomer, D. E. Ong

Faculty Publications

Recent work has demonstrated high levels of retinoid binding proteins in rat epididymis, and a lumenal retinoic acid binding protein has been purified. These findings suggested that vitamin A may be involved in spermatozoal maturation in the epididymis. We further addressed this question by quantifying retinol, retinyl esters, and retinoic acid isomers from perfused epididymal tissue, from rat testicular and epididymal spermatozoa, and from human ejaculate sperm. HPLC showed vitamin A levels to be higher in caput than in corpus or cauda tissue. Retinoic acid and 9-cis-retinoic acid were found to be graded from lowest levels in caput to highest …

Carbon, Nitrogen, And Phosphorus Leaching Rates From Spartina Alterniflora Salt Marshes, R. Eugene Turner

Faculty Publications

Annual carbon, nitrogen, and phosphorus leachate rates from live Spartina alterniflora Loisel in a Louisiana (USA) salt marsh were estimated to be 200, 14, and 3 g m-2, respectively, and to peak in summer and higher salinit~es. Leachate losses of P, N and C are equivalent to a turnover of live plant tissues of 10, 17 and 49 d, respectively, when submerged, and 148, 250 and 721 d, respectively, when unsubmerged. Plant leachate losses during marsh submergence and non-submergence are nearly equal because release rates are 15x greater during submergence. Nitrogen and carbon concentrations relative to phosphorus are proportionately 4x …

Carbon, Nitrogen, And Phosphorus Leaching Rates From Spartina-Alterniflora Salt Marshes, R E. Turner

Faculty Publications

Annual carbon, nitrogen, and phosphorus leachate rates from live Spartina alterniflora Loisel in a Louisiana (USA) salt marsh were estimated to be 200, 14, and 3 g M-2, respectively, and to peak in summer and higher salinities. Leachate losses of P, N and C are equivalent to a turnover of live plant tissues of 10, 17 and 49 d, respectively, when submerged, and 148, 250 and 721 d, respectively, when unsubmerged. Plant leachate losses during marsh submergence and non-submergence are nearly equal because release rates are 15 x greater during submergence. Nitrogen and carbon concentrations relative to phosphorus are proportionately …

Synaptic Transmission Between Pairs Of Retinal Amacrine Cells In Culture, E. Gleason, S. Borges, M. Wilson

Faculty Publications

We have examined synaptic transmission between isolated pairs of chick GABAergic amacrine cells, maintained in sparse culture and identified by their binding of an amacrine cell-selective antibody. Using the perforated- patch method to whole-cell clamp both cells of a pair, postsynaptic currents were examined for step depolarizations of the 'presynaptic' cell. Synaptic transmission, frequently reciprocal, was calcium dependent and reversibly blocked by bicuculline. Postsynaptic currents, excluding those due to ohmic electrical coupling, were elicited only for presynaptic voltage steps positive to about -40 mV and were always very noisy, suggesting that they were summed from relatively small numbers of quanta. …

Glucose Uptake And End Product Formation In An Intertidal Marine Sediment, T. E. Sawyer, G. M. King

Faculty Publications

Glucose uptake was monitored on a seasonal basis, using [6-3H]glucose and undisturbed cores collected from an intertidal mud flat. The fate of glucose carbon, including the formation of CO2 and biomass, was assayed by using undisturbed cores and [U-14C]glucose; the production of short-chain fatty acids was monitored with [U-14C]glucose and sediment slurries. Rate constants for glucose uptake varied temporally, with temperature accounting for much of the variability; turnover times ranged from about 2 to 10 min. Rate constants decreased with increasing sediment depth and in the following order for several common monosaccharides: glucose>galactose>mannose~fucose. Time course analyses of 14CO2 …

Structures Of And Allelic Diversity And Relationships Among The Major Outer Membrane Protein (Ompa) Genes Of The Four Chlamydial Species, B. Kaltenboeck, K. G. Kousoulas, J. Storz

Faculty Publications

DNA sequences coding for 81% of the ompA gene from 24 chlamydial strains, representing all chlamydial species, were determined from DNA amplified by polymerase chain reactions. Chlamydial strains of serovars and strains with similar chromosomal restriction fragment length polymorphism had identical ompA DNA sequences. The ompA sequences were segregated into 23 different ompA alleles and aligned with each other, and phylogenetic relationships among them were inferred by neighbor-joining and maximum parsimony analyses. The neighbor-joining method produced a single phylogram which was rooted at the branch between two major clusters. One cluster included all Chlamydia trachomatis ompA alleles (trachoma group). The …

Truncated Icosahedral Gravitational Wave Antenna, Warren W. Johnson, Stephen M. Merkowitz

Faculty Publications

We propose a new type of resonant-mass gravitational wave detector, a truncated icosahedral gravitational wave antenna. It will be omnidirectional, and able to measure the direction and polarization of a detected wave. We solve a model for this system, calculate the strain noise spectrum, and conclude that its angle-averaged energy sensitivity will be 56 times better than the equivalent bar-type antenna with the same noise temperature. © 1993 The American Physical Society.

Results From The Soviet-American Gallium Experiment, O. L. Anosov, E. L. Faizov, V. N. Gavrin, A. V. Kalikhov, T. V. Knodel, I. I. Knyshenko, V. N. Kornoukhov, I. N. Mirmov, A. V. Ostrinsky, A. M. Pshukov, A. A. Shikhin, P. V. Timofeyev, E. P. Veretenkin, V. M. Vermul, G. T. Zatsepin, T. J. Bowles, S. R. Elliott, J. S. Nico, H. A. O'Brien, D. L. Wark, J. F. Wilkerson, B. T. Cleveland, R. Davis, K. Lande, M. L. Cherry, R. T. Kouzes

Faculty Publications

A radiochemical 71Ga-71Ge experiment to determine the primary flux of neutrinos from the Sun began measurements of the solar neutrino flux at the Baksan Neutrino Observatory in 1990. The number of 71Ge atoms extracted from 30 tons of gallium in 1990 and 57 tons in 1991 was measured in twelve runs during the period of January 1990 to December 1991. For the 1990 data, we observed the capture rate to be 20 + 15 -20 (stat) ± 32 (syst) SNU, resulting in a limit of less than 79 SNU (90% CL). This is to be compared with 132 SNU predicted …

Louisiana Agriculture Magazine, Winter 1993, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Errata: Correction To One-Dimensional Nash Groups, James J. Madden

Faculty Publications

No abstract provided.

Unconventional Charge Gap Formation In Fesi, Z. Schlesinger, Z. Fisk, Hai Tao Zhang, M. B. Maple, J. Ditusa, G. Aeppli

Faculty Publications

We report the first infrared and optical measurements of the absolute conductivity of FeSi. Above 200 K the ac conductivity of FeSi resembles that of a dirty metal, while at low temperature most of the conductivity below 60 meV is depleted, consistent with an energy gap of that magnitude. Thus in contrast to what is expected from a picture based on simple thermal activation, the gap disappears at a temperature which is low relative to its size. Moreover, the spectral weight lost below the gap does not reappear just above the gap, but is instead distributed over an energy range …

Escape Of Gravitational Radiation From The Field Of Massive Bodies, Richard H. Price, Jorge Pullin, Prasun K. Kundu

Faculty Publications

We consider a compact source of gravitational waves of frequency, in or near a massive spherically symmetric distribution of matter or a black hole. Recent calculations have led to apparently contradictory results for the influence of the massive body on the propagation of the waves. We show here that the results are in fact consistent and in agreement with the standard viewpoint in which the high-frequency compact source produces the radiation as if in a flat background, and the background curvature affects the propagation of these waves. © 1993 The American Physical Society.

Use Of The History Of Science In A Nonscience Majors Course: Does It Affect Students' Understanding Of The Nature Of Science?, Linda Easley Roach

LSU Historical Dissertations and Theses

In response to a call for more research into using the history of science to teach the nature of science, a call for curriculum materials for inclusion of the nature of science in undergraduate nonscience majors courses, and in keeping with the nature of science described in the literature, interactive nature-of-science historical vignettes were utilized in a quantitative and qualitative investigation. Interactive nature-of-science historical vignettes employ the interrupted story form and binary opposites involving conflict to generate student participation and spark discussion about the nature of science. They were utilized as an experimental technique in a university level, introductory nonscience …

Functional Morphology Of The Lingual Apparatus Of Sandgrouse (Aves: Pteroclidae)., Werner Muller

LSU Historical Dissertations and Theses

The morphology of the lingual apparatus of three species of sandgrouse (Aves; Pteroclidae) has been described. All biomechanically important parts were included in the description, i.e., all muscles potentially involved in the functioning of the lingual apparatus, all skeletal parts, the salivary glands associated with the lingual apparatus, and the surface morphology of the oropharyngeal cavity. For each muscle its potential functions have been described. In a comparison with data from the literature of three other groups of birds it was found that the functional organization of the lingual apparatus of the sandgrouse is strikingly similar to the one found …

Determinants Of Mangrove Species Distribution In Neotropical Forests: Biotic And Abiotic Factors Affecting Seedling Survival And Growth., Karen Lee Mckee

LSU Historical Dissertations and Theses

Mangroves are salt-tolerant trees and shrubs that dominate the intertidal zone in many tropical and subtropical coastal regions. These intertidal forests often exhibit relatively distinct and recurring patterns of species distribution. A series of field and laboratory experiments examined biotic and abiotic factors affecting survival and growth of three neotropical mangrove species: Rhizophora mangle (red mangrove), Avicennia germinans (black mangrove), and Laguncularia racemosa (white mangrove). A field survey across a mangrove island range in Belize revealed six vegetation zones based on differences in dominant canopy species, size and vigor of the trees, spatial position relative to the shoreline, and hydro-edaphic …