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Articles 1 - 30 of 396
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Flesh And Blood: Excremental Suicide, Charles Joint Rivet
Flesh And Blood: Excremental Suicide, Charles Joint Rivet
Honors Theses
No abstract provided.
Faculty Senate Resolution 96-03, Louisiana State University And Agricultural & Mechanical College
Faculty Senate Resolution 96-03, Louisiana State University And Agricultural & Mechanical College
LSU Faculty Senate Publications
Faculty Senate Resolution regarding inclusion of Faculty Club, adopted on December 2, 1996.
Second-Order Perturbations Of A Schwarzschild Black Hole, Reinaldo J. Gleiser, Carlos O. Nicasio, Richard H. Price, Jorge Pullin
Second-Order Perturbations Of A Schwarzschild Black Hole, Reinaldo J. Gleiser, Carlos O. Nicasio, Richard H. Price, Jorge Pullin
Faculty Publications
We study the even-parity ℓ = 2 perturbations of a Schwarzschild black hole to second order. The Einstein equations can be reduced to a single linear wave equation with a potential and a source term. The source term is quadratic in terms of the first-order perturbations. This provides a formalism to address the validity of many first-order calculations of interest in astrophysics. © 1996 IOP Publishing Ltd.
Knot Theory And The Dynamics Of Quantum General Relativity, Rodolfo Gambini, Jorge Pullin
Knot Theory And The Dynamics Of Quantum General Relativity, Rodolfo Gambini, Jorge Pullin
Faculty Publications
We propose to interpret the action of the quantum Hamiltonian constraint of general relativity in the loop representation as a skein relation on the space of knots. Therefore, by considering knot polynomials that are compatible with that skein relation, one guarantees that all the quantum Einstein equations are solved. We give a particular example of such an invariant and discuss the consistency of the constraint algebra in this approach. © 1996 IOP Publishing Ltd.
Dolichyl-Phosphomannose Synthase From The Archae Thermoplasma Acidophilum, Betty C.R. Zhu, Roger A. Laine
Dolichyl-Phosphomannose Synthase From The Archae Thermoplasma Acidophilum, Betty C.R. Zhu, Roger A. Laine
Faculty Publications
Archae (formerly Archaebacteria) comprise an entire kingdom of organisms placed halfway between prokaryotes and eucaryotes in evolution, This class of organisms lacks murein cell wall and is devoid of organelles, yet Archae synthesize and export N-linked and O-linked glycoproteins utilizing only the plasma membrane. Study of glycosylation systems in Archae is extremely interesting because the plasma membrane must perform many functions normally carried out by the endoplasmic reticulum and Golgi in eucaryotes. This report represents the first glycosyl transferase system enzyme demonstrated from archae showing a functional relationship with homologous eucaryotic enzymes. Archae dolichyl-phosphoryl-mannose synthase was purified 1070-fold from Thermoplasma …
The Redox State Of The [2fe-2s] Clusters In Soxr Protein Regulates Its Activity As A Transcription Factor, Huangen Ding, Elena Hidalgo, Bruce Demple
The Redox State Of The [2fe-2s] Clusters In Soxr Protein Regulates Its Activity As A Transcription Factor, Huangen Ding, Elena Hidalgo, Bruce Demple
Faculty Publications
SoxR protein is a redox-responsive transcription factor that governs a regulon of oxidative stress and antibiotic resistance genes in Escherichia coli. Purified SoxR contains oxidized [2Fe-2S] clusters and stimulates in vitro transcription of its target gene soxS up to 100-fold. SoxR transcriptional activity, but not DNA binding, is completely dependent on the [2Fe-2S] clusters; apo-SoxR prepared in vitro binds the soxS promoter with unchanged affinity but does not have transcription activity. Thus, modulation of the SoxR [2Fe-2S] clusters was proposed to control the protein's function in transcription. Here, we provide evidence that SoxR with reduced [2Fe-2S] clusters is inactive. Redox …
Development Of An Orthogonal-Stripe Cdznte Gamma Radiation Imaging Spectrometer, J. R. Macri, B. A. Apotovsky, J. F. Butler, M. L. Cherry, B. K. Dann, A. Drake, F. P. Doty, T. G. Guzik, K. Larson, M. Mayer, M. L. Mcconnell, J. M. Ryan
Development Of An Orthogonal-Stripe Cdznte Gamma Radiation Imaging Spectrometer, J. R. Macri, B. A. Apotovsky, J. F. Butler, M. L. Cherry, B. K. Dann, A. Drake, F. P. Doty, T. G. Guzik, K. Larson, M. Mayer, M. L. Mcconnell, J. M. Ryan
Faculty Publications
We report performance measurements of a sub-millimeter resolution CdZnTe strip detector developed as a prototype for astronomical instruments operating with good efficiency in the 30-300 keV photon energy range. The prototype is a 1.4 mm thick, 64 × 64 contact stripe CdZnTe array of 0.375 mm pitch in both dimensions. Pulse height spectra were recorded in orthogonal-stripe coincidence mode which demonstrate room-temperature energy resolution < 10 keV (FWHM) for 122 keV photons with a peak-to-valley ratio > 5:1. Good response is also demonstrated at higher energies using a coplanar grid readout configuration. Spatial resolution capabilities finer than the stripe pitch are demonstrated. We present the image of a 133Ba source viewed through a …
The Detection Of Fraud In Financial Reporting: Did The Treadway Commission Make A Difference?, Michael Williamson
The Detection Of Fraud In Financial Reporting: Did The Treadway Commission Make A Difference?, Michael Williamson
Honors Theses
No abstract provided.
On The Matroids In Which All Hyperplanes Are Binary, S. R. Kingan, J. G. Oxley
On The Matroids In Which All Hyperplanes Are Binary, S. R. Kingan, J. G. Oxley
Faculty Publications
In this paper, it is shown that, for a minor-closed class ℳ of matroids, the class of matroids in which every hyperplane is in ℳ is itself minor-closed and has, as its excluded minors, the matroids U1,1 ⊕ N such that N is an excluded minor for ℳ. This result is applied to the class of matroids of the title, and several alternative characterizations of the last class are given.
Activation Of Δ-Globin Gene Expression By Erythroid Krupple-Like Factor: A Potential Approach For Gene Therapy Of Sickle Cell Disease, David Donze, Paxson H. Jeancake, Tim M. Townes
Activation Of Δ-Globin Gene Expression By Erythroid Krupple-Like Factor: A Potential Approach For Gene Therapy Of Sickle Cell Disease, David Donze, Paxson H. Jeancake, Tim M. Townes
Faculty Publications
Hemoglobin A2 (HbA2; α2δ2) is a powerful inhibitor of HbS (α2β2/(S) polymerization. However, HbA2 levels are normally low in sickle cell patients. We show that a major reason for low δ-globin gene expression is the defective CACCC box at -90 in the δ-globin promoter. When the CACCC box defect in δ is corrected, expression of an HS2 δ/Luciferase reporter is equivalent to HS2 β/Luciferase. Erythroid Krupple-like factor (EKLF), which binds to the CACCC box of the β-globin gene and activates high-level expression, does not bind to the normal δ-globin promoter. Our goal is to design a modified EKLF that binds …
Acylation Of Glucosaminyl Phosphatidylinositol Revisited. Palmitoyl-Coa Dependent Palmitoylation Of The Inositol Residue Of A Synthetic Dioctanoyl Glucosaminyl Phosphatidylinositol By Hamster Membranes Permits Efficient Mannosylation Of The Glucosamine Residue, William T. Doerrler, Jianhua Ye, J. R. Falck, Mark A. Lehrman
Acylation Of Glucosaminyl Phosphatidylinositol Revisited. Palmitoyl-Coa Dependent Palmitoylation Of The Inositol Residue Of A Synthetic Dioctanoyl Glucosaminyl Phosphatidylinositol By Hamster Membranes Permits Efficient Mannosylation Of The Glucosamine Residue, William T. Doerrler, Jianhua Ye, J. R. Falck, Mark A. Lehrman
Faculty Publications
Two critical steps in the assembly of yeast and mammalian glycosylphosphatidylinositol (GPI) anchor precursors are palmitoylation of the inositol residue and mannosylation of the glucosamine residue of the glucosaminyl phosphatidylinositol (GlcNα-PI) intermediate. Palmitoylation has been reported to be acyl-CoA dependent in yeast membranes (Costello, L. C., and Orlean, P. (1992) J. Biol. Chem. 267, 8599-8603) but strictly acyl- CoA independent in rodent membranes (Stevens, V. L., and Zhang, H. (1994) J. Biol. Chem. 269, 31397-31403), and thus poorly conserved. In addition, it was suggested that acylation must precede mannosylation in both yeast (Costello, L. C., and Orlean, P. (1992) J. …
Faculty Senate Resolution 96-02, Louisiana State University And Agricultural & Mechanical College
Faculty Senate Resolution 96-02, Louisiana State University And Agricultural & Mechanical College
LSU Faculty Senate Publications
Faculty Senate Resolution on the student financial aid system, adopted on November 6, 1996.
Nonequilibrium Critical Dynamics Of A Three Species Monomer-Monomer Model, Kevin E. Bassler, Dana A. Browne
Nonequilibrium Critical Dynamics Of A Three Species Monomer-Monomer Model, Kevin E. Bassler, Dana A. Browne
Faculty Publications
We study a three species monomer-monomer catalytic surface reaction model with a reactive steady state bordered by three equivalent unreactive phases where the surface is saturated with one species. The transition from the reactive to a saturated phase shows directed percolation critical behavior. Each pair of these reactive-saturated phase boundaries joins at a bicritical point where the universal behavior is in the even branching annihilating random walk class. We find the crossover exponent from bicritical to critical behavior and a new exponent associated with the bicritical interface dynamics. © 1996 The American Physical Society.
Faculty Senate Resolution 96-01, Louisiana State University And Agricultural & Mechanical College
Faculty Senate Resolution 96-01, Louisiana State University And Agricultural & Mechanical College
LSU Faculty Senate Publications
Faculty Senate Resolution on forming a special committee to investigate the role of the Office of Chancellor in awarding scholarships and aid, adopted on October 14, 1996.
Faculty Senate Resolution 95-06, Louisiana State University And Agricultural & Mechanical College
Faculty Senate Resolution 95-06, Louisiana State University And Agricultural & Mechanical College
LSU Faculty Senate Publications
Faculty Senate Resolution on computer literacy, adopted on October 4, 1996.
Measuring Rural-Urban Economic Linkages In The Monroe Louisiana Trading Area Through A Multiregional Input-Output Model (Bulletin #856), David W. Hughes, Vaneska N. Litz
Measuring Rural-Urban Economic Linkages In The Monroe Louisiana Trading Area Through A Multiregional Input-Output Model (Bulletin #856), David W. Hughes, Vaneska N. Litz
LSU AgCenter Bulletins
This study integrates regional economic theory with empirical analysis through the construction of an interregional core-periphery input-output (I-O) model of the 10- parish Monroe, Louisiana, Functional Economic Area economy. The model is used to estimate trade relationships and resulting economic linkages between the core and periphery economies.
Large-Area Sub-Millimeter Resolution Cdznte Strip Detector For Astronomy, J. R. Macri, B. A. Apotovsky, J. F. Butler, M. L. Cherry, B. K. Dann, F. P. Doty, T. G. Guzik, M. L. Mcconnell, J. M. Ryan
Large-Area Sub-Millimeter Resolution Cdznte Strip Detector For Astronomy, J. R. Macri, B. A. Apotovsky, J. F. Butler, M. L. Cherry, B. K. Dann, F. P. Doty, T. G. Guzik, M. L. Mcconnell, J. M. Ryan
Faculty Publications
We report performance measurements of a sub-millimeter resolution CdZnTe strip detector developed as a prototype for astronomical instruments. The prototype is a 1.4 mm thick, 64 × 64 stripe CdZnTe array with 0.375 mm pitch in both dimensions. Pulse height spectra in orthogonal stripe coincidence mode were recorded at several energies. The room-temperature energy resolution is (FWHM) for 122 keV photons with a peak-to-valley ratio >5:1. We also demonstrate spatial resolution capabilities finer than the stripe pitch.
Lumières, Fall 1996, Louisiana State University And Agricultural & Mechanical College
Lumières, Fall 1996, Louisiana State University And Agricultural & Mechanical College
Friends of the LSU Libraries
The bi-annual newsletters from the Friends of the Library contain information about upcoming and recent events, descriptions of new collections, a list of members, and occasional obituaries, which inform members of the news and needs of the LSU Libraries.
Louisiana Agriculture Magazine, Fall 1996, Lsu Agricultural Experiment Station
Louisiana Agriculture Magazine, Fall 1996, Lsu Agricultural Experiment Station
Louisiana Agriculture
No abstract provided.
Discovering The Meaning Of Bharata Natyam Movement Within The Devadasi Tradition: Dance Movement And Vernacular Movement Of South Indian Women, Nalini Raghavan
Discovering The Meaning Of Bharata Natyam Movement Within The Devadasi Tradition: Dance Movement And Vernacular Movement Of South Indian Women, Nalini Raghavan
Honors Theses
No abstract provided.
Baroque Transcriptions For Tuba, Todd Cranson
Observation Of Events With An Energetic Forward Neutron In Deep Inelastic Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, R. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, R. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari
Observation Of Events With An Energetic Forward Neutron In Deep Inelastic Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, R. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, R. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari
Faculty Publications
In deep inelastic neutral current scattering of positrons and protons at the center of mass energy of 300 GeV, we observe, with the ZEUS detector, events with a high energy neutron produced at very small scattering angles with respect to the proton direction. The events constitute a fixed fraction of the deep inelastic, neutral current event sample independent of Bjorken x and Q2 in the range 3 · 10-4 < xBJ < 6 · 10-3 and 10 < Q2 < 100 GeV2.
Dijet Angular Distributions In Direct And Resolved Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, R. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, R. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari
Dijet Angular Distributions In Direct And Resolved Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, R. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, R. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari
Faculty Publications
Jet photoproduction, where the two highest transverse energy (ETjet) jets have ETjet above 6 GeV and a jet-jet invariant mass above 23 GeV, has been studied with the ZEUS detector at the HERA ep collider. Resolved and direct photoproduction samples have been separated. The cross section as a function of the angle between the jet-jet axis and the beam direction in the dijet rest frame has been measured for the two samples. The measured angular distributions differ markedly from each other. They agree with the predictions of QCD calculations, where the different angular distributions reflect the different spins of the …
Glutathione-Mediated Destabilization In Vitro Of [2fe-2s] Centers In The Soxr Regulatory Protein, Huangen Ding, Bruce Demple
Glutathione-Mediated Destabilization In Vitro Of [2fe-2s] Centers In The Soxr Regulatory Protein, Huangen Ding, Bruce Demple
Faculty Publications
SoxR is a transcription factor that governs a global defense against the oxidative stress caused by nitric oxide or excess superoxide in Escherichia coli. SoxR is a homodimer containing a pair of [2Fe-2S] clusters essential for its transcriptional activity, and changes in the stability of these metal centers could contribute to the activation or inactivation of SoxR in vivo. Herein we show that reduced glutathione (GSH) in aerobic solution disrupts the SoxR [2Fe-2S] clusters, releasing Fe from the protein and eliminating SoxR transcriptional activity. This disassembly process evidently involves oxygen-derived free radicals. The loss of [2Fe-2S] clusters does not occur …
Pre-Asymptotic Expansions, A. L. Durán, R. Estrada, R. P. Kanwal
Pre-Asymptotic Expansions, A. L. Durán, R. Estrada, R. P. Kanwal
Faculty Publications
We introduce the concepts of pre-asymptotic schemes and pre-asymptotic expansions to study the divergent series that formally are solutions of various types of equations. © 1996 Academic Press, Inc.
Hydrocarbon Degradation In Louisiana's Salt And Fresh Water Marshes: Inherent Potential, Enhancement, And In-Situ Monitoring Techniques, William A. Jackson
Hydrocarbon Degradation In Louisiana's Salt And Fresh Water Marshes: Inherent Potential, Enhancement, And In-Situ Monitoring Techniques, William A. Jackson
LSU Historical Dissertations and Theses
The ability to effectively remediate crude oil from marsh systems is important due to the coexistence of the economically important hydrocarbon industry and ecologically and economically valuable marshes. Laboratory and field studies were initiated to examine the intrinsic ability of coastal marshes to biodegrade crude oil, to determine the ability to enhance degradation using nutrient additions, and develop a superior monitoring technique. The alkane and poly aromatic hydrocarbon (PAH) fractions seem to be independently degraded and these systems appear to have much greater capacity to degrade PAHs than alkanes. Nitrogen was found to be a limiting factor for both alkane …
Progress In The Development Of Large Area Sub-Millimeter Resolution Cdznte Strip Detectors, J. R. Macri, D. V. Boykin, K. Larson, M. Mayer, M. L. Mcconnell, J. M. Ryan, M. L. Cherry, T. G. Guzik, B. A. Apotovsky, J. F. Butler, F. P. Doty, C. L. Lingren
Progress In The Development Of Large Area Sub-Millimeter Resolution Cdznte Strip Detectors, J. R. Macri, D. V. Boykin, K. Larson, M. Mayer, M. L. Mcconnell, J. M. Ryan, M. L. Cherry, T. G. Guzik, B. A. Apotovsky, J. F. Butler, F. P. Doty, C. L. Lingren
Faculty Publications
We report progress in ongoing measurements of the performance of a sub-millimeter pitch CdZnTe strip detector developed as a prototype for astronomical instruments. Strip detectors can be used to provide two-dimensional position resolution with fewer electronic channels than pixellated arrays. Arrays of this type are under development for the position-sensitive image plane detector for a coded-aperture telescope operating in the hard x-ray range of 20-200 keV. The prototype is a 1.5 mm thick, 64 x 64 orthogonal stripe CdZnTe detector of 0.375 mm pitch in both dimensions, approximately one square inch of sensitive area. In addition to energy and spatial …
A Problem Set In Conditional Probability Using Martingales With A Derivation Of The Gambler’S Ruin Formula, Michael Everett Theriot Jr
A Problem Set In Conditional Probability Using Martingales With A Derivation Of The Gambler’S Ruin Formula, Michael Everett Theriot Jr
Honors Theses
No abstract provided.
Measurement Of The Reaction Γ*P→Φp In Deep Inelastic E+P Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, R. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, R. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari
Measurement Of The Reaction Γ*P→Φp In Deep Inelastic E+P Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, R. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, R. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari
Faculty Publications
The production of φ mesons in the reaction e+p → e+φp (φ → K+K-), for 7 < Q2 < 25 GeV2 and for virtual photon-proton centre of mass energies (W) in the range 42-134 GeV, has been studied with the ZEUS detector at HERA. When compared to lower energy data at similar Q2, the results show that the γp → p0p cross section rises strongly with W. This behaviour is similar to that previously found for the γ*p → p0p cross section. This strong dependence cannot be explained by production through soft pomeron exchange. It is, however, consistent with perturbative QCD expectations, where it reflects the rise of the gluon momentum density in the proton at small x. The ratio of σ(φ)/σ(p0), which has previously been determined by ZEUS to be 0.065 ± 0.013 (stat.) in photoproduction at a mean W of 70 GeV, is measured to be 0.18 ± 0.05 (stat.) ± 0.03 (syst.) at a mean Q2 of 12.3 GeV2 and mean W of ≈ 100 GeV and is thus approaching at large Q2 the value of 2/9 predicted from the quark charges of the vector mesons and a flavour independent production mechanism.
Effects Of Climate Change On Hypoxia In Coastal Waters: A Doubled Co2 Scenario For The Northern Gulf Of Mexico, Dubravko Justic, Nancy N. Rabalais, R. Eugene Turner
Effects Of Climate Change On Hypoxia In Coastal Waters: A Doubled Co2 Scenario For The Northern Gulf Of Mexico, Dubravko Justic, Nancy N. Rabalais, R. Eugene Turner
Faculty Publications
Projections of general circulation models suggest that freshwater discharge from the Mississippi River to the coastal ocean will increase 20% if atmospheric CO2 concentration doubles. This result is likely to affect water column stability, surface productivity, and global oxygen cycling in the northern Gulf of Mexico, which is the site of the largest (up to 16,500 km2) and most severe hypoxic zone (liter‒1) in the western Atlantic Ocean. We use a coupled physical-biological two-box model to investigate potential effects of climate change on seasonal oxygen cycling and hypoxia in river-dominated coastal waters. The model was developed and calibrated using comprehensive …