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Cu/Zn Superoxide Dismutases In Developing Cotton Fibers: Evidence For An Extracellular Form, Hee Jin Kim, Naohiro Kato, Sunran Kim, Barbara Triplett Jul 2008

Cu/Zn Superoxide Dismutases In Developing Cotton Fibers: Evidence For An Extracellular Form, Hee Jin Kim, Naohiro Kato, Sunran Kim, Barbara Triplett

Faculty Publications

Hydrogen peroxide and other reactive oxygen species are important signaling molecules in diverse physiological processes. Previously, we discovered superoxide dismutase (SOD) activity in extracellular protein preparations from fiber-bearing cotton (Gossypium hirsutum L.) seeds. We show here, based on immunoreactivity, that the enzyme is a Cu/Zn-SOD (CSD). Immunogold localization shows that CSD localizes to secondary cell walls of developing cotton fibers. Five cotton CSD cDNAs were cloned from cotton fiber and classified into three subfamilies (Group 1: GhCSD1; Group 2: GhCSD2a and GhCSD2b; Group 3: GhCSD3 and GhCSD3s). Members of Group 1 and 2 are expressed throughout fiber development, but predominant …

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The Cytoplasmic Terminus Of Kaposi's Sarcoma-Associated Herpesvirus Glycoprotein B Is Not Essential For Virion Egress And Infectivity, R. Subramanian, O. D'Auvergne, Haixia Kong, K. G. Kousoulas Jul 2008

The Cytoplasmic Terminus Of Kaposi's Sarcoma-Associated Herpesvirus Glycoprotein B Is Not Essential For Virion Egress And Infectivity, R. Subramanian, O. D'Auvergne, Haixia Kong, K. G. Kousoulas

Faculty Publications

Kaposi's sarcoma-associated herpesvirus (KSHV)-encoded glycoprotein B (gB) is an important determinant of viral infectivity and virion egress. A small interfering RNA (siRNA)-based strategy was devised to inhibit KSHV gB gene expression. Transient cotransfection of plasmids constitutively expressing gB and anti-gB siRNAs in 293 cells substantially inhibited gB mRNA levels and protein production. Similarly, transient expression of siRNAs into the primary effusion lymphoma cell line BCBL-1 caused a substantial reduction of gB transcripts and protein synthesis. TaqMan real-time PCR assays against the lytic KSHV gene ORF59 and infectivity assays on 293 cells were employed to assess the effect of inhibiting gB …

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Expressed Cdnas From Embryonic And Larval Stages Of The Horn Fly (Diptera: Muscidae), F. D. Guerrero, S. E. Dowd, V. M. Nene, L. D. Foil Jul 2008

Expressed Cdnas From Embryonic And Larval Stages Of The Horn Fly (Diptera: Muscidae), F. D. Guerrero, S. E. Dowd, V. M. Nene, L. D. Foil

Faculty Publications

We used an expressed sequence tag approach to initiate a study of the genome of the horn fly, Hematobia irritans (L.) (Diptera: Muscidae). Two normalized cDNA libraries were synthesized from RNA isolated from embryos and first instars from a field population of horn flies. Approximately 10,000 clones were sequenced from both the 5′ and 3′ directions. Sequence data from each library was assembled into a database of tentative consensus sequences (TCs) and singletons and used to search public protein databases and annotate the sequences. Additionally, the sequences from both the egg and larval libraries were combined into a single database …

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Louisiana Agriculture Summer, 2008, Lsu Agcenter Jul 2008

Louisiana Agriculture Summer, 2008, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

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Seminaphthofluorones Are A Family Of Water-Soluble, Low Molecular Weight, Nir-Emitting Fluorophores, Youjun Yang, Mark Lowry, Xiangyang Xu, Jorge O. Escobedo, Martha Sibrian-Vazquez, Lisa Wong, Corin M. Schowalter, Timothy J. Jensen, Frank R. Fronczek, Isiah M. Warner, Robert M. Strongin Jul 2008

Seminaphthofluorones Are A Family Of Water-Soluble, Low Molecular Weight, Nir-Emitting Fluorophores, Youjun Yang, Mark Lowry, Xiangyang Xu, Jorge O. Escobedo, Martha Sibrian-Vazquez, Lisa Wong, Corin M. Schowalter, Timothy J. Jensen, Frank R. Fronczek, Isiah M. Warner, Robert M. Strongin

Faculty Publications

A readily accessible new class of near infrared (NIR) molecular probes has been synthesized and evaluated. Specific fluorophores in this unique xanthene based regioisomeric seminaphthofluorone dye series exhibit a combination of desirable characteristics including (i) low molecular weight (339 amu), (ii) aqueous solubility, and (iii) dual excitation and emission from their fluorescent neutral and anionic forms. Importantly, systematic changes in the regiochemistry of benzannulation and the ionizable moieties afford (iv) tunable deep-red to NIR emission from anionic species and (v) enhanced Stokes shifts. Anionic SNAFR-6, exhibiting an unusually large Stokes shift of ≈200 nm (5,014 cm-1) in aqueous buffer, embodies …

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Dna Protection By Histone-Like Protein Hu From The Hyperthermophilic Eubacterium Thermotoga Maritima, Anirban Mukherjee, Abimbola O. Sokunbi, Anne Grove Jul 2008

Dna Protection By Histone-Like Protein Hu From The Hyperthermophilic Eubacterium Thermotoga Maritima, Anirban Mukherjee, Abimbola O. Sokunbi, Anne Grove

Faculty Publications

In mesophilic prokaryotes, the DNA-binding protein HU participates in nucleoid organization as well as in regulation of DNA-dependent processes. Little is known about nucleoid organization in thermophilic eubacteria. We show here that HU from the hyperthermophilic eubacterium Thermotoga maritima HU bends DNA and constrains negative DNA supercoils in the presence of topoisomerase I. However, while binding to a single site occludes ∼35 bp, association of T. maritima HU with DNA of sufficient length to accommodate multiple protomers results in an apparent shorter occluded site size. Such complexes consist of ordered arrays of protomers, as revealed by the periodicity of DNase …

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Temperature Sensitivity And Cell Division Defects In An Escherichia Coli Strain With Mutations In Yghb And Yqja, Encoding Related And Conserved Inner Membrane Proteins, Kandi Thompkins, Ballari Chattopadhyay, Ying Xiao, Margaret C. Henk, William T. Doerrler Jul 2008

Temperature Sensitivity And Cell Division Defects In An Escherichia Coli Strain With Mutations In Yghb And Yqja, Encoding Related And Conserved Inner Membrane Proteins, Kandi Thompkins, Ballari Chattopadhyay, Ying Xiao, Margaret C. Henk, William T. Doerrler

Faculty Publications

Ludox density gradients were used to enrich for Escherichia coli mutants with conditional growth defects and alterations in membrane composition. A temperature-sensitive mutant named Lud135 was isolated with mutations in two related, nonessential genes: yghB and yqjA. yghB harbors a single missense mutation (G203D) and yqjA contains a nonsense mutation (W92TGA) in Lud135. Both mutations are required for the temperature-sensitive phenotype: targeted deletion of both genes in a wild-type background results in a strain with a similar phenotype and expression of either gene from a plasmid restores growth at elevated temperatures. The mutant has altered membrane phospholipid levels, with elevated …

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Botanicals As Epigenetic Modulators For Mechanisms Contributing To Development Of Metabolic Syndrome, Heather Kirk, William T. Cefalu, David Ribnicky, Zhijun Liu, Kenneth J. Eilertsen Jul 2008

Botanicals As Epigenetic Modulators For Mechanisms Contributing To Development Of Metabolic Syndrome, Heather Kirk, William T. Cefalu, David Ribnicky, Zhijun Liu, Kenneth J. Eilertsen

Faculty Publications

Epigenetics refers to heritable changes in gene expression that are not attributable to changes in DNA sequence and impacts many areas of applied and basic biology including developmental biology, gene therapy, somatic cell nuclear transfer, somatic cell reprogramming, and stem cell biology. Epigenetic changes are known to contribute to aging in addition to multiple disease states. Epigenetic changes can be influenced by environmental factors that in turn can be inherited by daughter cells during cell division and can also be inherited through the germ line. Thus, it is intriguing to consider that epigenetics, in general, may play a role in …

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Multidimensional Fluorescence Microscopy Of Multiple Organelles In Arabidopsis Seedlings, Naohiro Kato, Dexter Reynolds, Matthew L. Brown, Marietta Boisdore, Yukichi Fujikawa, Andrea Morales, Lee A. Meisel Jun 2008

Multidimensional Fluorescence Microscopy Of Multiple Organelles In Arabidopsis Seedlings, Naohiro Kato, Dexter Reynolds, Matthew L. Brown, Marietta Boisdore, Yukichi Fujikawa, Andrea Morales, Lee A. Meisel

Faculty Publications

Background. The isolation of green fluorescent protein (GFP) and the development of spectral variants over the past decade have begun to reveal the dynamic nature of protein trafficking and organelle motility. In planta analyses of this dynamic process have typically been limited to only two organelles or proteins at a time in only a few cell types. Results. We generated a transgenic Arabidopsis plant that contains four spectrally different fluorescent proteins. Nuclei, plastids, mitochondria and plasma membranes were genetically tagged with cyan, red, yellow and green fluorescent proteins, respectively. In addition, methods to track nuclei, mitochondria and chloroplasts and quantify …

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Constitutive Expressor Of Pathogenesis-Related Genes5 Affects Cell Wall Biogenesis And Trichome Development, Ginger Brininstool, Remmy Kasili, L. Alice Simmons, Viktor Kirik, Martin Hülskamp, John C. Larkin Jun 2008

Constitutive Expressor Of Pathogenesis-Related Genes5 Affects Cell Wall Biogenesis And Trichome Development, Ginger Brininstool, Remmy Kasili, L. Alice Simmons, Viktor Kirik, Martin Hülskamp, John C. Larkin

Faculty Publications

Background. The Arabidopsis thaliana CONSTITUTIVE EXPRESSOR OF PATHOGENESIS-RELATED GENES5 (CPR5) gene has been previously implicated in disease resistance, cell proliferation, cell death, and sugar sensing, and encodes a putative membrane protein of unknown biochemical function. Trichome development is also affected in cpr5 plants, which have leaf trichomes that are reduced in size and branch number. Results. In the work presented here, the role of CPR5 in trichome development was examined. Trichomes on cpr5 mutants had reduced birefringence, suggesting a difference in cell wall structure between cpr5 and wild-type trichomes. Consistent with this, leaf cell walls of cpr5 plants contained significantly …

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Mangrove Production And Carbon Sinks: A Revision Of Global Budget Estimates, Steven Bouillon, Alberto V. Borges, Edward Castañeda-Moya, Karen Diele, Thorsten Dittmar, Norman C. Duke, Erik Kristensen, Shing Y. Lee, Cyril Marchand, Jack J. Middelburg, Victor H. Rivera-Monroy, Thomas J. Smith, Robert R. Twilley Jun 2008

Mangrove Production And Carbon Sinks: A Revision Of Global Budget Estimates, Steven Bouillon, Alberto V. Borges, Edward Castañeda-Moya, Karen Diele, Thorsten Dittmar, Norman C. Duke, Erik Kristensen, Shing Y. Lee, Cyril Marchand, Jack J. Middelburg, Victor H. Rivera-Monroy, Thomas J. Smith, Robert R. Twilley

Faculty Publications

Mangrove forests are highly productive but globally threatened coastal ecosystems, whose role in the carbon budget of the coastal zone has long been debated. Here we provide a comprehensive synthesis of the available data on carbon fluxes in mangrove ecosystems. A reassessment of global mangrove primary production from the literature results in a conservative estimate of ∼-218 ± 72 Tg C a-1. When using the best available estimates of various carbon sinks (organic carbon export, sediment burial, and mineralization), it appears that >50% of the carbon fixed by mangrove vegetation is unaccounted for. This unaccounted carbon sink is …

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Evaluation Of Different Insecticides And Fabric Types For Development Of Treated Targets For Stable Fly (Diptera: Muscidae) Control, Jerome A. Hogsette, Alyce Nalli, Lane D. Foil Jun 2008

Evaluation Of Different Insecticides And Fabric Types For Development Of Treated Targets For Stable Fly (Diptera: Muscidae) Control, Jerome A. Hogsette, Alyce Nalli, Lane D. Foil

Faculty Publications

Stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae), once only a pest of pastured cattle, has become a serious pest of range cattle in the United States. Because of the difficulties associated with stable fly management under range conditions, a pesticide-impregnated cloth target is being developed as a management tool. We conducted studies to determine the influence of weather, time, fabric type, insecticide type, and insecticide concentration on the mortality of stable flies from a susceptible laboratory colony exposed for 30 s to treated cloth targets. We found that 100% of the flies exposed to trigger (Trigger-Royal Box, 65% polyester and …

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Mitochondria In Energy-Limited States: Mechanisms That Blunt The Signaling Of Cell Death, Steven C. Hand, Michael A. Menze Jun 2008

Mitochondria In Energy-Limited States: Mechanisms That Blunt The Signaling Of Cell Death, Steven C. Hand, Michael A. Menze

Faculty Publications

Cellular conditions experienced during energy-limited states - elevated calcium, shifts in cellular adenylate status, compromised mitochondrial membrane potential - are precisely those that trigger, at least in mammals, the mitochondrion to initiate opening of the permeability transition pore, to assemble additional protein release channels, and to release pro-apoptotic factors. These proapototic factors in turn activate initiator and executer caspases. How is activation of mitochondria-based pathways for the signaling of apoptotic and necrotic cell death avoided under conditions of hypoxia, anoxia, diapause, estivation and anhydrobiosis? Functional trade-offs in environmental tolerance may have occurred in parallel with the evolution of diversified pathways …

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Preparation Of Botanical Samples For Biomedical Research, Zhijun Liu Jun 2008

Preparation Of Botanical Samples For Biomedical Research, Zhijun Liu

Faculty Publications

Plants are chemical storehouses, a fact which has driven countless multidisciplinary quests for bioactive compounds. As the very first step of botanical research, the whole desire is to find "hit" plants with specific bioactivities. It is logical to use some strategies that can maximize the chances of finding these "hits" with limited time and resources. In addition to selecting the right plants for screening, how the plant extracts are prepared can also influence the bioactivity screening outcomes. An extract from the same plant material can be quite different in chemical composition having different preparations. Because of the complex mixture nature …

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Neuroprotection Via Matrix-Trophic Coupling Between Cerebral Endothelial Cells And Neurons, Shuzhen Guo, Woo Jean Kim, Josephine Lok, Sun Ryung Lee, Elaine Besancon, Bing Hao Luo, Monique F. Stins, Xiaoying Wang, Shoukat Dedhar, Eng H. Lo May 2008

Neuroprotection Via Matrix-Trophic Coupling Between Cerebral Endothelial Cells And Neurons, Shuzhen Guo, Woo Jean Kim, Josephine Lok, Sun Ryung Lee, Elaine Besancon, Bing Hao Luo, Monique F. Stins, Xiaoying Wang, Shoukat Dedhar, Eng H. Lo

Faculty Publications

The neurovascular unit is an emerging concept that emphasizes homeostatic interactions between endothelium and cerebral parenchyma. Here, we show that cerebral endothelium are not just inert tubes for delivering blood, but they also secrete trophic factors that can be directly neuroprotective. Conditioned media from cerebral endothelial cells broadly protects neurons against oxygen-glucose deprivation, oxidative damage, endoplasmic reticulum stress, hypoxia, and amyloid neurotoxicity. This phenomenon is largely mediated by endothelial-produced brain-derived neurotrophic factor (BDNF) because filtering endothelial-conditioned media with TrkB-Fc eliminates the neuroprotective effect. Endothelial production of BDNF is sustained by β-1 integrin and integrin-linked kinase (ILK) signaling. Noncytotoxic levels of …

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Genome Analysis Of The Platypus Reveals Unique Signatures Of Evolution, Wesley C. Warren, La Deana W. Hillier, Jennifer A. Marshall Graves, Ewan Birney, Chris P. Ponting, Frank Grützner, Katherine Belov, Webb Miller, Laura Clarke, Asif T. Chinwalla, Shiaw Pyng Yang, Andreas Heger, Devin P. Locke, Pat Miethke, Paul D. Waters, Frédéric Veyrunes, Lucinda Fulton, Bob Fulton, Tina Graves, John Wallis, Xose S. Puente, Carlos López-Otín, Gonzalo R. Ordóñez, Evan E. Eichler, Lin Chen, Ze Cheng, Janine E. Deakin, Amber Alsop, Katherine Thompson, Patrick Kirby, Anthony T. Papenfuss, Matthew J. Wakefield, Tsviya Olender, Doron Lancet May 2008

Genome Analysis Of The Platypus Reveals Unique Signatures Of Evolution, Wesley C. Warren, La Deana W. Hillier, Jennifer A. Marshall Graves, Ewan Birney, Chris P. Ponting, Frank Grützner, Katherine Belov, Webb Miller, Laura Clarke, Asif T. Chinwalla, Shiaw Pyng Yang, Andreas Heger, Devin P. Locke, Pat Miethke, Paul D. Waters, Frédéric Veyrunes, Lucinda Fulton, Bob Fulton, Tina Graves, John Wallis, Xose S. Puente, Carlos López-Otín, Gonzalo R. Ordóñez, Evan E. Eichler, Lin Chen, Ze Cheng, Janine E. Deakin, Amber Alsop, Katherine Thompson, Patrick Kirby, Anthony T. Papenfuss, Matthew J. Wakefield, Tsviya Olender, Doron Lancet

Faculty Publications

We present a draft genome sequence of the platypus, Ornithorhynchus anatinus. This monotreme exhibits a fascinating combination of reptilian and mammalian characters. For example, platypuses have a coat of fur adapted to an aquatic lifestyle; platypus females lactate, yet lay eggs; and males are equipped with venom similar to that of reptiles. Analysis of the first monotreme genome aligned these features with genetic innovations. We find that reptile and platypus venom proteins have been co-opted independently from the same gene families; milk protein genes are conserved despite platypuses laying eggs; and immune gene family expansions are directly related to platypus …

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Can Megavoltage Computed Tomography Reduce Proton Range Uncertainties In Treatment Plans For Patients With Large Metal Implants?, Wayne D. Newhauser, Annelise Giebeler, Katja M. Langen, Dragan Mirkovic, Radhe Mohan May 2008

Can Megavoltage Computed Tomography Reduce Proton Range Uncertainties In Treatment Plans For Patients With Large Metal Implants?, Wayne D. Newhauser, Annelise Giebeler, Katja M. Langen, Dragan Mirkovic, Radhe Mohan

Faculty Publications

Treatment planning calculations for proton therapy require an accurate knowledge of radiological path length, or range, to the distal edge of the target volume. In most cases, the range may be calculated with sufficient accuracy using kilovoltage (kV) computed tomography (CT) images. However, metal implants such as hip prostheses can cause severe streak artifacts that lead to large uncertainties in proton range. The purposes of this study were to quantify streak-related range errors and to determine if they could be avoided by using artifact-free megavoltage (MV) CT images in treatment planning. Proton treatment plans were prepared for a rigid, heterogeneous …

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Faculty Senate Resolution 08-09, Louisiana State University And Agricultural & Mechanical College May 2008

Faculty Senate Resolution 08-09, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution on appropriate selection of LA Core 4 Curriculum as the TOPS criteria, adopted on May 1, 2008.

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Effect Of Epigenetic Modifications Of Donor Somatic Cells On The Subsequent Chromatin Remodeling Of Cloned Bovine Embryos, Angelica M. Giraldo, Darin A. Hylan, Casey B. Ballard, Megan N. Purpera, Todd D. Vaught, John W. Lynn, Robert A. Godke, Kenneth R. Bondioli May 2008

Effect Of Epigenetic Modifications Of Donor Somatic Cells On The Subsequent Chromatin Remodeling Of Cloned Bovine Embryos, Angelica M. Giraldo, Darin A. Hylan, Casey B. Ballard, Megan N. Purpera, Todd D. Vaught, John W. Lynn, Robert A. Godke, Kenneth R. Bondioli

Faculty Publications

Evidence indicates that failure of nuclear transfer (NT) embryos to develop normally can be attributed, at least partially, to the use of differentiated cells as the donor karyoplast. Blastocyst production and development to term of cloned embryos has been hypothesized to differ between population doublings of the same cell line as a consequence of changes in the levels of DNA methyltransferase 1 (DNMT1) and methylated DNA during in vitro culture. The objective of this study was to determine embryo production, developmental potential, and gene expression patterns of prehatched and posthatched embryos generated using donor cells with different levels of DNMT1 …

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Temperature-Dependent Development, Survival, And Potential Distribution Of Ischnodemus Variegatus (Hemiptera: Blissidae), A Herbivore Of West Indian Marsh Grass, Rodrigo Diaz, William A. Overholt, J. P. Cuda, Paul D. Pratt, Alison Fox May 2008

Temperature-Dependent Development, Survival, And Potential Distribution Of Ischnodemus Variegatus (Hemiptera: Blissidae), A Herbivore Of West Indian Marsh Grass, Rodrigo Diaz, William A. Overholt, J. P. Cuda, Paul D. Pratt, Alison Fox

Faculty Publications

The bug Ischnodemus variegatus (Signoret) (Hemiptera: Blissidae) is an adventive herbivore, native to South America that feeds in the invasive grass Hymenachne amplexicaulis (Rudge) Nees (Poaceae). This grass is a problematic weed in Florida and Australia, but it is a highly valued forage in Mexico, Cuba, and Venezuela. We studied the influence of nine constant temperatures (8-38°C) on the developmental time and survival of I. variegatus. Complete egg and nymphal mortality occurred at temperatures ≤20.5°C and at 38°C. Developmental time decreased linearly with temperature until 28-30°C and then increased at 33°C. Mortality of first, second, and third instars was high …

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Chiral Recognition Of Amino Acids By Use Of A Fluorescent Resorcinarene, Gerald I. Richard, Hadi M. Marwani, Shan Jiang, Sayo O. Fakayode, Mark Lowry, Robert M. Strongin, Isiah M. Warner May 2008

Chiral Recognition Of Amino Acids By Use Of A Fluorescent Resorcinarene, Gerald I. Richard, Hadi M. Marwani, Shan Jiang, Sayo O. Fakayode, Mark Lowry, Robert M. Strongin, Isiah M. Warner

Faculty Publications

The spectroscopic properties of a chiral boronic acid based resorcinarene macrocycle employed for chiral analysis were investigated. Specifically, the emission and excitation characteristics of tetraarylboronate resorcinarene macrocycle (TBRM) and its quantum yield were evaluated. The chiral selector TBRM was investigated as a chiral reagent for the enantiomeric discrimination of amino acids using steady-state fluorescence spectroscopy. Chiral recognition of amino acids in the presence of the macrocycle was based on diastereomeric complexes. Results demonstrated that TBRM had better chiral discrimination ability for lysine as compared to the other amino acids. Partial least squares regression modeling (PLS-1) of spectral data for macrocycle-lysine …

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Stand Structure And Dynamics Of Sand Pine Differ Between The Florida Panhandle And Peninsula, Paul B. Drewa, William J. Platt, Charles Kwit, Thomas W. Doyle May 2008

Stand Structure And Dynamics Of Sand Pine Differ Between The Florida Panhandle And Peninsula, Paul B. Drewa, William J. Platt, Charles Kwit, Thomas W. Doyle

Faculty Publications

Size and age structures of stand populations of numerous tree species exhibit uneven or reverse J-distributions that can persist after non-catastrophic disturbance, especially windstorms. Among disjunct populations of conspecific trees, alternative distributions are also possible and may be attributed to more localized variation in disturbance. Regional differences in structure and demography among disjunct populations of sand pine (Pinus clausa (Chapm. ex Engelm.) Vasey ex Sarg.) in the Florida panhandle and peninsula may result from variation in hurricane regimes associated with each of these populations. We measured size, age, and growth rates of trees from panhandle and peninsula populations and then …

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Culture-Independent Identification Of Gut Bacteria In Fourth-Instar Red Imported Fire Ant, Solenopsis Invicta Buren, Larvae, Albert H. Lee, Claudia Husseneder, Linda Hooper-Bùi May 2008

Culture-Independent Identification Of Gut Bacteria In Fourth-Instar Red Imported Fire Ant, Solenopsis Invicta Buren, Larvae, Albert H. Lee, Claudia Husseneder, Linda Hooper-Bùi

Faculty Publications

Red imported fire ants (RIFA), Solenopsis invicta Buren, are medical, urban, and agricultural pests from South America. They are successful invaders due to their preference for disturbed habitats, high reproductive rates, and the ability to feed on a wide variety of food items (omnivorous). Fourth-instar larvae are used by the colony to digest solid food and then regurgitate it for consumption by workers and queens. Larvae are an ideal source of investigations of endosymbiotic bacteria possibly involved in nutrient distributions. Our study utilized 16S rDNA sequencing to describe the composition of the bacterial community in fourth-instar ant larvae in order …

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A Critical Exegesis And Interpretation Of The Work Of Austin Farrer, Wesley Dalton May 2008

A Critical Exegesis And Interpretation Of The Work Of Austin Farrer, Wesley Dalton

Honors Capstones

No abstract provided.

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The Power Of Language: In Politics, Genocide, And Politicide, Heather Rademacher May 2008

The Power Of Language: In Politics, Genocide, And Politicide, Heather Rademacher

Honors Capstones

No abstract provided.

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Xylose-Fermenting Yeast Species Found In The Wood Of Southeast Louisiana, Claire Reuter May 2008

Xylose-Fermenting Yeast Species Found In The Wood Of Southeast Louisiana, Claire Reuter

Honors Capstones

No abstract provided.

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Micro Air Vehicle (Mav): Numerical Optimization Of A Coaxial Rotor Blade Design, Jeffrey A. Kornuta May 2008

Micro Air Vehicle (Mav): Numerical Optimization Of A Coaxial Rotor Blade Design, Jeffrey A. Kornuta

Honors Capstones

No abstract provided.

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Carbon, Nitrogen, Sodium And Phosphorous Concentrations And Ratios In Spartina Alterniflora (Loiser) From Sites Of Various Freshwater And Nutrient Inputs In Coastal Louisiana Wetlands, Margaret Frances Williamson May 2008

Carbon, Nitrogen, Sodium And Phosphorous Concentrations And Ratios In Spartina Alterniflora (Loiser) From Sites Of Various Freshwater And Nutrient Inputs In Coastal Louisiana Wetlands, Margaret Frances Williamson

Honors Capstones

No abstract provided.

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Reply To Comment By K. Gajewski On "Abrupt Environmental Change In Canada's Northernmost Lake", Dermot Antoniades, Catherine Crawley, Marianne S.V. Douglas, Reinhard Pienitz, Dale Andersen, Peter T. Doran, Ian Hawes, Wayne Pollard, Warwick F. Vincent Apr 2008

Reply To Comment By K. Gajewski On "Abrupt Environmental Change In Canada's Northernmost Lake", Dermot Antoniades, Catherine Crawley, Marianne S.V. Douglas, Reinhard Pienitz, Dale Andersen, Peter T. Doran, Ian Hawes, Wayne Pollard, Warwick F. Vincent

Faculty Publications

We welcome the opportunity to respond to Gajewski's [2008] comments on our study [Antoniades et al., 2007, hereinafter referred to as A07]. We demonstrate here that his assertions are not supported by the evidence and that the conclusions in A07 are based on a sound interpretation of the data. Copyright 2008 by the American Geophysical Union.

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Reducing Stray Radiation Dose To Patients Receiving Passively Scattered Proton Radiotherapy For Prostate Cancer, Phillip J. Taddei, Jonas D. Fontenot, Yuanshui Zheng, Dragan Mirkovic, Andrew K. Lee, Uwe Titt, Wayne D. Newhauser Apr 2008

Reducing Stray Radiation Dose To Patients Receiving Passively Scattered Proton Radiotherapy For Prostate Cancer, Phillip J. Taddei, Jonas D. Fontenot, Yuanshui Zheng, Dragan Mirkovic, Andrew K. Lee, Uwe Titt, Wayne D. Newhauser

Faculty Publications

Proton beam radiotherapy exposes healthy tissue to stray radiation emanating from the treatment unit and secondary radiation produced within the patient. These exposures provide no known benefit and may increase a patient's risk of developing a radiogenic second cancer. The aim of this study was to explore strategies to reduce stray radiation dose to a patient receiving a 76 Gy proton beam treatment for cancer of the prostate. The whole-body effective dose from stray radiation, E, was estimated using detailed Monte Carlo simulations of a passively scattered proton treatment unit and an anthropomorphic phantom. The predicted value of E was …

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