Digital Commons Network^™

The Value Of Salt Marsh Edge Vs Interior As A Habitat For Fish And Decapod Crustaceans In A Louisiana Tidal Marsh, G. W. Peterson, R. Eugene Turner

Faculty Publications

Flume nets of various lengths and a 3-m seine were used to sample the fishes and macrocrustaceans using a flooded Louisiana salt marsh and the adjacent tidal creek. The experiment allowed for species-specific comparisons of the flooded marsh at the creek edge versus the interior. Of the 37,667 organisms collected in flume nets from January through November 1989, 89% were decapods (nine species) and 11% were fish (29 species). An additional 18,539 organisms (75% decapods and 25% fish) were collected from concurrent seine samples taken from July through November. Comparison of catches among different flume lengths and low tide versus …

A Rationale For Coastal Wetland Restoration Through Spoil Bank Management In Louisiana, Usa, R. Eugene Turner, E. M. Swenson, J. M. Lee

Faculty Publications

The rationale and outline of an implementation plan for restoring coastal wetlands in Louisiana is presented. The rationale for the plan is based on reversing the consequences of documented cause-and-effect relationships between wetland loss and hydrologic change. The main feature is to modify the extensive interlocking network of dredged spoil deposits, or spoil banks, by reestablishing a more natural water flow at moderate flow velocity (/sec). Guidelines for site selection from thousands of potential sites are proposed. Examples of suitable sites are given for intermediate marshes. These sites exhibit rapid deterioration following partial or complete hydrologic impoundment, implying a strong …

Faculty Senate Resolution 93-03, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution for a standard search to fill all critical positions, adopted on February 17, 1994.

Backfilling Canals To Restore Wetlands: Empirical Results In Coastal Louisiana, R. Eugene Turner, James M. Lee, Christopher Neill

Faculty Publications

Wetland restoration is largely a developing science and engineering enterprise. Analyses of results are too few and constrained to observations over a few years. We report here on the effectiveness of one restoration technique used sparsely in coastal Louisiana for several decades. Canals have been dredged in coastal Louisiana wetlands since 1938 for oil and gas exploration and extraction. These canals are typically dredged to 2.5 m depth and are 20 to 40 m wide. Canal lengths vary from 100 m to several 1000s m in the case of outer continental shelf pipeline canals that cross the wetlands.

Today, thousands …

Personal And Occupational Mobility Characteristics Of Selected Dislocated Newspaper Workers., Jackie Lamar Benton

LSU Historical Dissertations and Theses

The purpose of this study was to describe the personal and occupational mobility characteristics of selected dislocated newspaper workers and the residual effect of their separation and unemployment. Objectives of the descriptive study focused on: (a) demographic characteristics, (b) employment history, (c) occupational mobility, (d) economic and emotional impact, (e) attitudes and perceptions, and (f) education and training. A defined population of 132 dislocated newspaper workers was surveyed six and 18 months after departure from the industry. The researcher-designed survey instrument had 41 items (six months) and 43 items (18 months). Sixty-four dislocated newspaper workers responded at six months, and …

A Water Balance Evaluation Of The Effects Of Climate Variability And Human Modification On The Flow Regime Of The Mississippi River, 1932-1988., Judy Lee Hoff

LSU Historical Dissertations and Theses

Human activities affecting runoff and streamflow within the Mississippi River drainage basin have been and continue to be significant. Since the disastrous flood of 1927, the U.S. Army Corps of Engineers has established an extensive regulatory system for flood control purposes and navigational benefits. Along with these river system modifications, significant landscape alterations have occurred within the basin as a result of cultural and economical development. In light of the dramatic Midwest flood of 1993, it becomes increasingly necessary to understand the comprehensive relationship between streamflow, climatic variability, and human-induced change within the overall drainage basin. A water balance methodology …

Reactor Analysis Of Chemical Vapor Deposition Of Titanium Dioxide And Copper Thin Films., Wing-Cheong Gilbert Lai

LSU Historical Dissertations and Theses

A set of reactor models for chemical vapor deposition (CVD) of titanium dioxide films from titanium tetraisopropoxide (TTIP) in a vertical cold-wall CVD reactor has been developed. The effects of the carrier gas on the deposition of TiO$\sb2$ films were examined. The reaction mechanism proposed by the earlier workers in our group was used for the reactor modeling (Siefering and Griffin, 1990a; 1990b). The kinetic parameters were estimated from the reactor models at three levels of approximation; i.e., a lumped parameter (LP) model, a one-dimensional stagnation point flow reactor (1-D SPFR) model, and a full 2-D SPFR model. The 2-D …

Strategic Adaptation In The Banking Industry: An Exploration Of The Antecedents And Consequences Of Strategic Change Following Deregulation., Elton L. Scifres Jr

LSU Historical Dissertations and Theses

This dissertation examined the antecedents and consequences of strategic change in the commercial banking industry between 1980 and 1987. Based on a review of the literature, a conceptual model was developed that predicted change would be influenced by two factors, adaptive forces and inertial forces. Adaptive forces include two factors that have been hypothesized to encourage change, prior performance and slack resources. Inertial forces include two factors sometimes thought to inhibit change, organizational size and age. Change outcomes were predicted to be influenced by degree of change and moderated by adaptive and inertial forces. Guided by previous theoretical and empirical …

Development Of Aluminum Tolerance In Rice (Oryza Sativa L.) Through Tissue Culture Techniques., Herry S. Utomo

LSU Historical Dissertations and Theses

Three tissue culture techniques, somaclone evaluation, in vitro screening of suspension cells, and in vitro screening of protoplasts were evaluated for their potential to produce aluminum (Al) tolerant rice. For somaclone evaluation, a collection of 9,000 rice somaclones was screened. After 11 days of germination in 200 uM Al, the length of the primary root was measured and used as the criterion for selection since a principal effect of Al toxicity is inhibition of root growth. Four superior lines were identified. Root length of the most tolerant line was 50% greater than its control following germination in screening solution. A …

The Generalized Distributive Law As Tacit Knowledge In Algebra., Juanita Lavall Bates

LSU Historical Dissertations and Theses

The purposes of this study were to investigate theories that explain why common errors of the type ($a \pm b)\sp{c} = a\sp{c} \pm b\sp{c}$ and $\root c \of {a \pm b} = \root c \of {a} \pm \root c \of {b}$ occur in algebra problem solving by novices; and to develop and assess techniques for remediating these errors. The meaning theory of learning (ML), procedural learning theory (PL), and implicit structure learning theory (ISL) are alternative frameworks for the explanation of the errors. The ML theory hypothesizes that experts have rich semantic connections to the procedures and symbols of algebra, …

Theoretical And Experimental Modeling Of Removing Contaminants From Soils By An Electric Field., Akram Nimer Alshawabkeh

LSU Historical Dissertations and Theses

A mathematical model is formulated for multicomponent transport of reactive species under an electric field. A set on differential and algebraic equations is developed for transport of fluid, charge, and species in a saturated soil under coupled hydraulic, electric, and chemical potential gradients. An iterative scheme is chosen in solution of a system of differential and algebraic equations. Six differential equations and four algebraic equations are used to model transport of $Pb\sp{2+}$, $H\sp+$, $OH\sp-$, $NO3\sp-$, the associated chemical reactions, electric potential and the hydraulic head across the electrodes. Finite Element Method is used in space discretization. Finite difference technique is …

Development Of A Body Image Assessment Procedure For Children And Pre-Adolescents., Staci Veron Guidry

LSU Historical Dissertations and Theses

Eating disorders have been researched extensively among adult, and, more recently, among adolescent populations. Body image disturbance is included as a diagnostic criterion for anorexia nervosa and bulimia nervosa, and has been postulated as a central characteristic of the eating disorders. Researchers have identified eating disorders among prepubertal children; therefore, there is a need for the development of reliable and valid measures of eating disorders and body image in children. In this investigation, a total of 257 children in grades 3 through 7 completed the Children's Eating Attitudes Test, Children's Depression Inventory, Piers-Harris Children's Self Concept Scale physical appearance and …

Carbonic Anhydrase Activity In Isolated Chloroplasts Of Wild-Type And High-Co2-Dependent Mutants Of Chlamydomonas Reinhardtii As Studied By A New Assay, G. L. Katzman, S. J. Carlson, Y. Marcus, J. V. Moroney, R. K. Togasaki

Faculty Publications

No abstract provided.

Evidence For A Role Of Β‐1,3‐Glucanase In Dicot Seed Germination, Regina Vögeli‐Lange, Corinne Fründt, Craig M. Hart, Roland Beffa, Ferenc Nagy, Frederick Meins

Faculty Publications

Class I β‐1,3‐glucanases are antifungal vacuolar proteins implicated in plant defense that show developmental, hormonal, and pathogenesis‐related regulation. The expression was studied in germinating tobacco seeds of a chimeric β‐glucuronidase (GUS) reporter gene fused to 1.6 kb of the 5′ flanking sequence of the tobacco class I β‐1,3‐glucanase B (GLB) promoter. Histological staining for GUS activity showed that expression of the GLB promoter is highly localized in a specific zone of the endosperm in germinating seeds. The temporal and spatial patterns of GUS and β‐1,3‐glucanase activity found, suggest a novel function for class I β‐1,3‐glucanases during seed germination in a …

Mechanistic Analysis Of Ammonium Inhibition Of Atmospheric Methane Consumption In Forest Soils, S. Schnell, G. M. King

Faculty Publications

Methane consumption by forest soil was studied in situ and in vitro with respect to responses to nitrogen additions at atmospheric and elevated methane concentrations. Methane concentrations in intact soil decreased continuously from atmospheric levels at the surface to 0.5 ppm at a depth of 14 cm. The consumption rate of atmospheric methane in soils, however, was highest in the 4- to 8-cm depth interval (2.9 nmol per g of dry soil per day), with much lower activities below and above this zone. In contrast, extractable ammonium and nitrate concentrations were highest in the surface layer (0 to 2 cm; …

Ammonium And Nitrite Inhibition Of Methane Oxidation By Methylobacter Albus Bg8 And Methylosinus Trichosporium Ob3b At Low Methane Concentrations, G. M. King, S. Schnell

Faculty Publications

Methane oxidation by pure cultures of the methanotrophs Methylobacter albus BG8 and Methylosinus trichosporium OB3b was inhibited by ammonium choride and sodium nitrite relative to that in cultures assayed in either nitrate-containing or nitrate-free medium. M. albus was generally more sensitive to ammonium and nitrite than M. trichosporium. Both species produced nitrite from ammonium; the concentrations of nitrite produced increased with increasing methane concentrations in the culture headspaces. Inhibition of methane oxidation by nitrite was inversely proportional to headspace methane concentrations, with only minimal effects observed at concentrations of >500 ppm in the presence of 250 μM nitrite. Inhibition increased …

Association Of The Catalytic Subunit Of Aspartate Transcarbamoylase With A Zinc‐Containing Polypeptide Fragment Of The Regulatory Chain Leads To Increases In Thermal Stability, Cynthia B. Peterson, Bin‐Bing ‐B Zhou, Durwynne Hsieh, Angela N.H. Creager, H. K. Schachman

Faculty Publications

The regulatory enzyme aspartate transcarbamoylase (ATCase), comprising 2 catalytic (C) trimers and 3 regulatory (R) dimers, owes its stability to the manifold interchain interactions among the 12 polypeptide chains. With the availability of a recombinant 70‐amino acid zinc‐containing polypeptide fragment of the regulatory chain of ATCase, it has become possible to analyze directly the interaction between catalytic and regulatory chains in a complex of simpler structure independent of other interactions such as those between the 2 C trimers, which also contribute to the stability of the holoenzyme. Also, the effect of the interaction between the polypeptide, termed the zinc domain, …

Aerosol Matrix-Assisted Laser Desorption Ionization Mass Spectrometry, Kermit K. Murray, David H. Russell

Faculty Publications

A new method of liquid sample introduction for a time-of-flight mass spectrometer (TOF-MS) has been developed by applying the method of matrix-assisted laser desorption ionization to aerosols. Analyte biomolecules are dissolved in a methanol solvent along with a UVabsorbing matrix and formed into an aerosol with a pneumatic nebulizer. The aerosol particles are dried in a heated skimmer tube before ionization by pulsed 355-nm UV laser radiation. Mass analysis is achieved in a linear TOF-MS. Results for the ionization of bovine insulin (5733.5 Mw) are reported. © 1994 American Society for Mass Spectrometry.

Intensive Wetland Agriculture In Mesoamerica: Space, Time, And Form, Andrew Sluyter

Faculty Publications

No abstract provided.

Biological And Genetic Characterization Of A Hemagglutinating Coronavirus Isolated From A Diarrhoeic Child, X. M. Zhang, W. Herbst, K. G. Kousoulas, J. Storz

Faculty Publications

The coronavirus strain HECV‐4408 was isolated from diarrhea fluid of a 6‐year‐old child with acute diarrhea and propagated in human rectal tumor (HRT‐18) cells. Electron microscopy revealed coronavirus particles in the diarrhea fluid sample and the infected HRT‐18 cell cultures. This virus possessed hemagglutinating and acetylesterase activities and caused cytopathic effects in HRT‐18 cells but not in MDBK, GBK and FE cells. One of four S‐specific monoclonal antibodies reacted in Western blots with HECV‐4408, BCV‐L9 and BCV‐LY138 but not with HCV‐OC43, and two reacted with BCV‐L9 but not with HECV‐4408, BCV‐LY138 and HCV‐OC43. One S‐specific and two N‐specific monoclonal antibodies …

Paraganglioma In The Vertebral Canal Of A Cow, Dae Yong Kim, Mae K. Lopez, Alvin C. Camus, E. Clay Hodgin, D. Gene Luther

Faculty Publications

No abstract provided.

Effect Of Sodium Bentonite Or Hydrated Sodium Calcium Aluminosilicate On Growth Performance And Tibia Mineral Concentrations In Broiler Chicks Fed Nutrient-Deficient Diets., L. L. Southern, T. L. Ward, T. D. Bidner, L. G. Hebert

Faculty Publications

An experiment was conducted to determine whether sodium bentonite (NaB) or hydrated sodium calcium aluminosilicate (HSCA) would affect growth performance and tibia mineral concentrations in chicks fed nutrient-deficient diets. Two identical trials were conducted; each using 240 5- to 19-d-old broiler chicks (4 replicates of 5 chicks each) in a completely random design. A factorial arrangement of treatments consisted of four types of nutrient deficiencies [nutritionally complete basal (C), macromineral-deficient (-MM), trace mineral- and vitamin-deficient (-TMV), and crude protein-deficient (-CP)], and three types of additive (none, .5% NaB, and .5% HSCA). The -MM and -TMV diets reduced (P < .01), gain, feed intake, and gain:feed. The -CP diet decreased (P < .01) gain and gain:feed but did not affect (P > .10) feed …

Interactive Effects Of Dietary Copper And Water Copper Level On Growth, Water Intake, And Plasma And Liver Copper Concentrations Of Poults., T. L. Ward, K. L. Watkins, L. L. Southern

Faculty Publications

The interactive effects of dietary Cu and water Cu on poult growth, water intake, whole-blood hemoglobin (Hb), and plasma and liver Cu concentrations were investigated using 232-9-old toms. Poults were randomly assigned to two levels of dietary Cu [Basal (B) and B + 204 mg Cu/kg diet] and to four levels of water Cu (0, 51.5, 103, and 206 mg Cu/kg water) in a 2 x 4 factorial arrangement of treatments. Each treatment was replicated six times. All poults received tap water during Days 1 to 5 followed by the water Cu treatments during Days 6 to 10. Water intake …

Three New Species And A New Record Of Neotropical Pocadlus Erichson 1843 (Coleoptera Nitidulidae), R. A.B. Leschen, C. E. Carlton

Faculty Publications

Three species of nitidulid beetles from Ecuador and Costa Rica are described as new: Pocadius maquipucunensis, P. ephite, and P. ephite and P. jelineki. These species were collected from puffball fungi of the genus Lycoperdon or in flight-intercept traps located in high-altitude cloud forests. Pocadius dimidiatus Jelínek 1977, previously known from Argentina, is reported from Tambopata Province, Peru. Specimens of P. dimidiatus were collected from fungi in the genera Lycoperdon and Geaster or in flight-intercept traps located in lowland tropical rainforest. © 1994 Taylor & Francis Group, LLC.

Celts, Greeks, And Germans: Macpherson’S Ossian And The Celtic Epic, Howard D. Weinbrot

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

Front Matter & Foreward

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

“Petticoats In Power”: Catherine The Great In British Political Cartoons, Vincent Carretta

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

Diffuse Galactic Continuum Emission Measured By Comptel And The Cosmic-Ray Electron Spectrum, A. W. Strong, R. Diehl, V. Schönfelder, M. Varendorff, G. Youssefi, H. Bloemen, W. Hermsen, C. De Vries Sron-Leiden, D. Morris, J. G. Stacy, K. Bennett

Faculty Publications

Diffuse galactic continuum γ-ray emission in the 0.75-30 MeV range from the inner Galaxy has been studied using data from COMPTEL on the Compton Gamma-Ray Observatory. Observations of the inner Galaxy from the Sky Survey have been used. The imaging properties of COMPTEL enable spatial analysis of the γ-ray distribution using model fitting. A model based on atomic and molecular gas distributions in the Galaxy has been used to derive the emissivity spectrum of the γ-ray emission and this spectrum is compared with theoretical estimates of bremsstrahlung emission from cosmic-ray electrons.

Determination Of Radiative Lifetimes Of Excited States In Neutral Gold Using Time-Resolved Vacuum-Ultraviolet Laser Spectroscopy, M. B. Gaarde, R. Zerne, Luo Caiyan, Jiang Zhankui, J. Larsson, S. Svanberg

Faculty Publications

Natural radiative lifetimes of the states in the highly perturbed 5d10np 2P sequence in neutral gold, Au i, for n=69, as well as of four of the perturbing 5d96s6p 2P states, have been measured. This was done by direct excitation from the ground state with short-pulse vacuum-ultraviolet laser light and time-resolved detection of the laser-induced fluorescence. We found the lifetimes to be (6p 2P1/2)=6.2(2) ns, (6p 2P3/2)=4.7(2) ns, (7p 2P1/2)=6.4(7) ns, (7p 2P3/2)=5.3(7) ns, (8p 2P1/2)=63(3) ns, (8p 2P3/2)=24(2) ns, (9p 2P1/2)=28(2) ns, and (9p 2P3/2)=75(4) ns. For the perturbing states (two states of each term have been observed) we …

Seven Million Years Of Glaciation In Greenland, H. C. Larsen, A. D. Saunders, P. D. Clift, J. Beget, W. Wei, S. Spezzaferri, J. Ali, H. Cambray, A. Demant, G. Fitton, M. S. Fram, K. Fukuma, J. Gieskes, M. A. Holmes, J. Hunt, C. Lacasse, L. M. Larsen, H. Lykke-Andersen, A. Meltser, M. L. Morrison, N. Nemoto, N. Okay, S. Saito, C. Sinton, R. Stax, T. L. Vallier, D. Vandamme, R. Werner

Faculty Publications

Glacial till, glaciomarine diamictites, and ice-rafted detritus found in marine cores collected off the shore of southeast Greenland record multiple Late Cenozoic glaciations beginning in the Late Miocene. Distinct rock assemblages and seismic stratigraphic control correlate the diamictites with glaciation of the southeast Greenland margin. Glaciers advanced to the sea during several intervals in the Pliocene and Pleistocene. North Atlantic glaciation may have nucleated in southern Greenland rather than further north because of the high mountains and the high levels of precipitation in this region.