Digital Commons Network^™

Association Of Polymorphisms In The Aldosterone-Regulated Sodium Reabsorption Pathway With Blood Pressure Among Hispanics, Bamidele O. Tayo, Liping Tong, Richard S. Cooper

Faculty Publications

Background: Whereas genome-wide association study (GWAS) has proven to be an important tool for discovery of variants influencing many human diseases and traits, unfortunately its performance has not been much of all-around success for some complex conditions, for example, hypertension. Because some of the existing effective pharmacotherapeutic agents act by targeting known biological pathways, pathway-based analytical approaches could lead to more success in discovery of disease-associated variants. The objective of the present study was to identify functional variants associated with blood pressure in the aldosterone-regulated sodium reabsorption pathway using the simulated and real blood pressure phenotypes provided for Genetic Analysis …

Pteridine Levels And Head Weights Are Correlated With Age And Colony Task In The Honey Bee, Apis Mellifera, Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, James A. Ottea, Kristen B. Healy

Faculty Publications

Background. The age of an insect strongly influences many aspects of behavior and reproduction. The interaction of age and behavior is epitomized in the temporal polyethism of honey bees in which young adult bees perform nurse and maintenance duties within the colony, while older bees forage for nectar and pollen. Task transition is dynamic and driven by colony needs. However, an abundance of precocious foragers or overage nurses may have detrimental effects on the colony. Additionally, honey bee age affects insecticide sensitivity. Therefore, determining the age of a set of individual honey bees would be an important measurement of colony …

Lsu General Catalog 2016-2017, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

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

Stability Turned Into Motion Erasmus Darwin's Recourse To Ovid's Metamorphoses, Sonja Fielitz

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

No abstract provided.

Cook's Ark Animals On The Move In The Service Of Empires, Bärbel Czennia

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

No abstract provided.

The Effect Of Highly Salient Pictures On Unfamiliar Face Matching Performance, Karyn Warner

Honors Capstones

No abstract provided.

Cognitive Phenotypes And The Evolution Of Animal Decisions, Tamra C. Mendelson, Courtney L. Fitzpatrick, Mark E. Hauber, Charles H. Pence, Rafael L. Rodríguez, Rebecca J. Safran, Caitlin A. Stern, Jeffrey R. Stevens

Faculty Publications

Despite the clear fitness consequences of animal decisions, the science of animal decision making in evolutionary biology is underdeveloped compared with decision science in human psychology. Specifically, the field lacks a conceptual framework that defines and describes the relevant components of a decision, leading to imprecise language and concepts. The ‘judgment and decision-making’ (JDM) framework in human psychology is a powerful tool for framing and understanding human decisions, and we apply it here to components of animal decisions, which we refer to as ‘cognitive phenotypes’. We distinguish multiple cognitive phenotypes in the context of a JDM framework and highlight empirical …

Concept, Conversion, Cultivation, And Consequence: The Four Cs Of Successful Collaboration, Sarah Simms, Hayley Johnson

Faculty Publications

In an effort to change the librarian-faculty collaboration culture at Nicholls State University, librarians actively sought grant opportunities to make resources available to the university which would facilitate collaboration. Nicholls was able to secure grant funding for a collaborative multidisciplinary research workshop series to promote undergraduate research. The objective of this grant funded opportunity was to place the library in a central role in the enhancement and expansion of the university’s research initiatives and partner with those disciplines that were traditionally self-contained. The technology and training made available to students through this initiative is important as it provides all students …

Acetylation Of Androgen Receptor By Ard1 Promotes Dissociation From Hsp90 Complex And Prostate Tumorigenesis, John S. Depaolo, Zehua Wang, Jianhui Guo, Guanyi Zhang, Chiping Qian, Haitao Zhang, Jovanny Zabaleta, Wanguo Liu

Faculty Publications

Prostate cancer is an androgen receptor (AR)-driven disease and post-translational modification of AR is critical for AR activation. We previously reported that Arrestdefective protein 1 (ARD1) is an oncoprotein in prostate cancer. It acetylates and activates AR to promote prostate tumorigenesis. However, the ARD1-targeted residue within AR and the mechanisms of the acetylation event in prostate tumorigenesis remained unknown. In this study, we show that ARD1 acetylates AR at lysine 618 (K618) in vitro and in vivo. An AR construct with the charged lysine substitution by arginine (AR-618R) reduces RNA Pol II binding, AR transcriptional activity, prostate cancer cell growth, …

Rearrangement And Evolution Of Mitochondrial Genomes In Parrots, Jessica R. Eberhard, Timothy F. Wright

Faculty Publications

© 2015 Elsevier Inc. Mitochondrial genome rearrangements that result in control region duplication have been described for a variety of birds, but the mechanisms leading to their appearance and maintenance remain unclear, and their effect on sequence evolution has not been explored. A recent survey of mitochondrial genomes in the Psittaciformes (parrots) found that control region duplications have arisen independently at least six times across the order. We analyzed complete mitochondrial genome sequences from 20 parrot species, including representatives of each lineage with control region duplications, to document the gene order changes and to examine effects of genome rearrangements on …

Formation Of Environmentally Persistent Free Radical (Epfr) In Iron(Iii) Cation-Exchanged Smectite Clay, Ugwumsinachi G. Nwosu, Amitava Roy, Albert Leo N. Dela Cruz, Barry Dellinger, Robert Cook

Faculty Publications

Environmentally persistent free radicals (EPFRs) have been found at a number of Superfund sites, with EPFRs being formed via a proposed redox process at ambient environmental conditions. The possibility of such a redox process taking place at ambient environmental conditions is studied utilizing a surrogate soil system of phenol and iron(iii)-exchanged calcium montmorillonite clay, Fe(iii)CaM. Sorption of phenol by the Fe(iii)CaM is demonstrated by Fourier-transformed infra-red (FT-IR) spectroscopy, as evidenced by the peaks between 1345 cm and 1595 cm , and at lower frequencies between 694 cm and 806 cm , as well as X-ray diffraction (XRD) spectroscopy, as shown …

Formation Of Environmentally Persistent Free Radical (Epfr) In Iron(Iii) Cation-Exchanged Smectite Clay, Ugwumsinachi G. Nwosu, Amitava Roy, Albert Leo N. Dela Cruz, Barry Dellinger, Robert Cook

Faculty Publications

Environmentally persistent free radicals (EPFRs) have been found at a number of Superfund sites, with EPFRs being formed via a proposed redox process at ambient environmental conditions. The possibility of such a redox process taking place at ambient environmental conditions is studied utilizing a surrogate soil system of phenol and iron(iii)-exchanged calcium montmorillonite clay, Fe(iii)CaM. Sorption of phenol by the Fe(iii)CaM is demonstrated by Fourier-transformed infra-red (FT-IR) spectroscopy, as evidenced by the peaks between 1345 cm and 1595 cm , and at lower frequencies between 694 cm and 806 cm , as well as X-ray diffraction (XRD) spectroscopy, as shown …

Cryopreservation In Fish: Current Status And Pathways To Quality Assurance And Quality Control In Repository Development, Leticia Torres, E. Hu, Terrence R. Tiersch

Faculty Publications

Cryopreservation in aquatic species in general has been constrained to research activities for more than 60 years. Although the need for application and commercialisation pathways has become clear, the lack of comprehensive quality assurance and quality control programs has impeded the progress of the field, delaying the establishment of germplasm repositories and commercial-scale applications. In this review we focus on the opportunities for standardisation in the practices involved in the four main stages of the cryopreservation process: (1) source, housing and conditioning of fish; (2) sample collection and preparation; (3) freezing and cryogenic storage of samples; and (4) egg collection …

A Deterministic Model For Predicting Hourly Dissolved Oxygen Change: Development And Application To A Shallow Eutrophic Lake, Zhen Xu, Y. Jun Xu

Faculty Publications

Predicting dissolved oxygen (DO) change at a high frequency in water bodies is useful for water quality management. In this study, we developed a deterministic model that can predict hourly DO change in a water body with high frequency weather parameters. The study was conducted during August 2008-July 2009 in a eutrophic shallow lake in Louisiana, USA. An environment monitoring buoy was deployed to record DO, water temperature and chlorophyll-a concentration at 15-min intervals, and hourly weather data including air temperature, precipitation, wind speed, relative humidity, and solar radiation were gathered from a nearby weather station. These data formed a …

Glufosinate Rate And Timing For Control Of Glyphosate-Resistant Rhizomatous Johnsongrass (Sorghum Halepense) In Glufosinate-Resistant Soybean, Randall L. Landry, Daniel O. Stephenson, Brandi C. Woolam

Faculty Publications

Field studies were conducted over a three-year period (2011, 2012, and 2013) in Louisiana to evaluate the effect of glufosinate rate and timing on glyphosate-resistant (GR) rhizomatous johnsongrass control in glufosinate-resistant soybean. Treatments included glufosinate (0.5, 0.6, or 0.7 kg ai ha-1) applied alone POST1 (46 cm tall johnsongrass) and sequentially 3 (POST2) or 4 (POST3) wk after POST1 at 0.5 or 0.6 kg ha-1. Glufosinate (0.7 kg ha-1) applied POST1 controlled johnsongrass 77% at soybean harvest. Averaged across sequential application rate, delaying the sequential application from POST2 to POST3 increased control from 65 to 78% at harvest. Increasing sequential …

Partial Differential Equations And Function Spaces, Shijun Zheng, Simone Secchi, Huoxiong Wu, Nguyen Cong Phuc

Faculty Publications

No abstract provided.

Surfactant Toxicity To Artemia Franciscana And The Influence Of Humic Acid And Chemical Composition, Rachel D. Deese, Madeline R. Leblanc, Robert L. Cook

Faculty Publications

© CSIRO 2016. Environmental context Surfactants, a pollutant class routinely introduced into aquatic environments, can be toxic to a variety of species. It is thus important to understand how surfactants' toxicity is influenced by their interactions with other environmental constituents, including natural organic matter. We report the changes in toxicity of three surfactants to brine shrimp in the presence of unmodified and chemically modified humic acids. Abstract Surfactants can be extremely toxic to aquatic species and are introduced to the environment in a variety of ways. It is thus important to understand how other environmental constituents, in this case humic …

Model System Study Of Environmentally Persistent Free Radicals Formation In A Semiconducting Polymer Modified Copper Clay System At Ambient Temperature, Ugwumsinachi G. Nwosu, Lavrent Khachatryan, Sang Gil Youm, Amitava Roy, Albert Leo N. Dela Cruz, Evgueni E. Nesterov, Barry Dellinger, Robert L. Cook

Faculty Publications

© The Royal Society of Chemistry 2016. This paper systematically investigates how environmentally persistent free radicals (EPFRs) are formed in a phenol contaminated model soil. Poly-p-phenylene (PPP) modified and copper-loaded montmorillonite (MMT) clays were developed and used as models of soil organic matter and the clay mineral component, respectively, with phenol being employed as a precursor pollutant. The polymer modification of the clays was carried out via surface-confined Kumada catalyst-transfer chain-growth polymerization. The presence and location of the polymer were confirmed by a combination of thermogravimetric analysis (TGA), Raman spectroscopy, and X-ray diffraction data. EPFRs were formed by the Cu(ii)-clay …

Formation Of Environmentally Persistent Free Radical (Epfr) In Iron(Iii) Cation-Exchanged Smectite Clay, Ugwumsinachi G. Nwosu, Amitava Roy, Albert Leo N. Dela Cruz, Barry Dellinger, Robert Cook

Faculty Publications

© 2016 The Royal Society of Chemistry. Environmentally persistent free radicals (EPFRs) have been found at a number of Superfund sites, with EPFRs being formed via a proposed redox process at ambient environmental conditions. The possibility of such a redox process taking place at ambient environmental conditions is studied utilizing a surrogate soil system of phenol and iron(iii)-exchanged calcium montmorillonite clay, Fe(iii)CaM. Sorption of phenol by the Fe(iii)CaM is demonstrated by Fourier-transformed infra-red (FT-IR) spectroscopy, as evidenced by the peaks between 1345 cm-1 and 1595 cm-1, and at lower frequencies between 694 cm-1 and 806 cm-1, as well as X-ray …

Health Of The Seventh Cavalry: A Medical History, John S. Haller

Civil War Book Review

Careful Analysis of Medical Statistics Builds a Model of Army Life

For those who enjoy statistical research as essential validation of historical writing, this epidemiological and medical analysis of the iconic Seventh Cavalry, one of forty regiments operating at the height of the American....

Model System Study Of Environmentally Persistent Free Radicals Formation In A Semiconducting Polymer Modified Copper Clay System At Ambient Temperature, Ugwumsinachi G. Nwosu, Lavrent Khachatryan, Sang Gil Youm, Amitava Roy, Albert Leo N. Dela Cruz, Evgueni E. Nesterov, Barry Dellinger, Robert L. Cook

Faculty Publications

This paper systematically investigates how environmentally persistent free radicals (EPFRs) are formed in a phenol contaminated model soil. Poly-p-phenylene (PPP) modified and copper-loaded montmorillonite (MMT) clays were developed and used as models of soil organic matter and the clay mineral component, respectively, with phenol being employed as a precursor pollutant. The polymer modification of the clays was carried out via surface-confined Kumada catalyst-transfer chain-growth polymerization. The presence and location of the polymer were confirmed by a combination of thermogravimetric analysis (TGA), Raman spectroscopy, and X-ray diffraction data. EPFRs were formed by the Cu(ii)-clay (Cu(ii)CaMMT) and poly-p-phenylene-Cu(ii)clay (PPP-Cu(ii)CaMMT) composite systems under …

Model System Study Of Environmentally Persistent Free Radicals Formation In A Semiconducting Polymer Modified Copper Clay System At Ambient Temperature, Ugwumsinachi G. Nwosu, Lavrent Khachatryan, Sang Gil Youm, Amitava Roy, Albert Leo N. Dela Cruz, Evgueni E. Nesterov, Barry Dellinger, Robert L. Cook

Faculty Publications

This paper systematically investigates how environmentally persistent free radicals (EPFRs) are formed in a phenol contaminated model soil. Poly-p-phenylene (PPP) modified and copper-loaded montmorillonite (MMT) clays were developed and used as models of soil organic matter and the clay mineral component, respectively, with phenol being employed as a precursor pollutant. The polymer modification of the clays was carried out via surface-confined Kumada catalyst-transfer chain-growth polymerization. The presence and location of the polymer were confirmed by a combination of thermogravimetric analysis (TGA), Raman spectroscopy, and X-ray diffraction data. EPFRs were formed by the Cu(ii)-clay (Cu(ii)CaMMT) and poly-p-phenylene-Cu(ii)clay (PPP-Cu(ii)CaMMT) composite systems under …

Implications Of Texture And Erodibility For Sediment Retention In Receiving Basins Of Coastal Louisiana Diversions, Kehui Xu, Samuel J. Bentley, Patrick Robichaux, Xiaoyu Sha, Haifei Yang

Faculty Publications

© 2015 by the authors. Although the Mississippi River deltaic plain has been the subject of abundant research over recent decades, there is a paucity of data concerning field measurement of sediment erodibility in Louisiana estuaries. Two contrasting receiving basins for active diversions were studied: West Bay on the western part of Mississippi River Delta and Big Mar, which is the receiving basin for the Caernarvon freshwater diversion. Push cores and water samples were collected at six stations in West Bay and six stations in Big Mar. The average erodibility of Big Mar sediment was similar to that of Louisiana …

Tropospheric Ozone Prediction With Land Cover Regression In Baton Rouge, Louisiana, Mallory Nance Thomas

LSU Master's Theses

Ground level ozone (O3) is a pollutant of great public health concern. Spatial interpolation techniques provide powerful tools in estimating O3 exposure, but many fall short when predicting O3 on complex surfaces, especially given the high local variability typically associated with O3 data. Like most other locations, the Baton Rouge, Louisiana, O3 non-attainment zone (BRNZ) is plagued by a sparse density of O3 monitoring stations. This research explores land use regression (LUR) as an alternative spatial prediction method in and around the BRNZ. Multiple years of data are used to partially compensate for the small sample of spatial points. To …

Microbial Mat Communities Along An Oxygen Gradient In A Perennially Ice-Covered Antarctic Lake, Anne D. Jungblut, Ian Hawes, Tyler J. Mackey, Megan Krusor, Peter T. Doran, Dawn Y. Sumner, Jonathan A. Eisen, Colin Hillman, Alexander K. Goroncy

Faculty Publications

© 2016, American Society for Microbiology. Lake Fryxell is a perennially ice-covered lake in the McMurdo Dry Valleys, Antarctica, with a sharp oxycline in a water column that is density stabilized by a gradient in salt concentration. Dissolved oxygen falls from 20 mg liter-1 to undetectable over one vertical meter from 8.9-to 9.9-m depth. We provide the first description of the benthic mat community that falls within this oxygen gradient on the sloping floor of the lake, using a combination of micro- and macroscopic morphological descriptions, pigment analysis, and 16S rRNA gene bacterial community analysis. Our work focused on three …

An Examination Of Autism Symptomatology In Young Children With Family History Of Autism Spectrum Disorder, Jasper Abarte Estabillo

LSU Master's Theses

Multiple genetic and environmental factors have roles in the etiology of autism spectrum disorder (ASD). Thus, researchers have become increasingly interested in studying family members of individuals with ASD in order to examine possible risk factors and to identify early markers of the disorder. While family history of ASD may put an individual at risk for developing autism, there is limited research examining how the degree of relationship to the affected individual may be related to an individual’s presenting ASD symptomatology. Because closer familial relationships (i.e., first-degree relatives) have more shared genetic material and tend to have increased common environment …

A Geochronological And Stratigraphic Reconstruction Of The Middle Barataria Bay Receiving Basin, Joseph Ethan Thomas Hughes

LSU Master's Theses

Barataria Bay, one of the largest receiving basins for the Mississippi deltaic complex, is the location of a proposed river-sediment diversion for delta restoration. In order to determine how the sediment in the receiving-basin may respond to diversion flows, twenty-five sediment vibracores were collected from a 115 km2 study area located near Myrtle Grove and Bayou Dupont, southeast of New Orleans, LA. These cores were subject to multiple tests, including gamma bulk density scans, grain size analysis, and loss-on-ignition, in order to identify the lithology and stratigraphy. In addition, 137Cs and 14C dating techniques were employed in order to construct …

A Model Compound Study In Syngas Tar Reforming, Jaren Lee

LSU Master's Theses

Biomass or coal gasification are promising processes for renewable energy. However, a major operating problem in gasification is what to do with syngas byproducts such as H2S and tars (heavy hydrocarbons) that cause catalyst deactivation downstream. Studies have shown that rare earth oxides (REOs) doped with transition metals are promising catalysts for tar reforming in the presence of sulfur.(R. Li, Roy, Bridges, & Dooley, 2014) In Chapter 1, propane is studied as a model compound for tar reforming with transition metal-doped (e.g., Mn, Fe) REOs. These are compared to a typical commercial Ni/Al2O3 catalyst. The results showed that REO/TM catalysts …

Activity Level As A Moderator Of The Relationship Between Child And Maternal Anxiety, Paige Marie Ryan

LSU Master's Theses

Anxiety is excessive and impairing for approximately 30% of individuals. Families with anxiety problems tend to pass on those problems to their children, specifically due to a variety of factors: genetics, parenting style, and other environmental risks. On the other hand, promoting behaviors like positive activity scheduling, participation in clubs, and physical activity has been shown to decrease symptoms of anxiety. However, research has yet to focus on this relationship by increasing activity level (e.g., participation in organizations, hobbies, sports). The purpose of this study is to investigate if the relationship between maternal and child anxiety is dependent upon the …

Influence Of Fertilizer Source And Irrigation Regimen On Containerized Production Of Coleus (Plectranthus Scutellarioides (L.) Codd) 'Solar Sunrise' And Management Of Bermudagrass (Cynodon Dactylon (L.) Pers. X C. Transvaalensis Burtt-Davy) 'Tifway', Kayla Renee Sanders

LSU Master's Theses

Fertilizer nutrient losses through leachate and runoff from excessive irrigation in nursery container production and turfgrass management can be high and have negative environmental impacts. The objective of this research was to examine the influence of fertilizer source and irrigation regimen on nutrient losses during nursery container production and turfgrass management. During the container production of coleus (Plectranthus scutellarioides (L.) Codd) 'Solar Sunrise', four fertilizer treatments: an unfertilized control; a controlled-release (CRF); a water-soluble (WSF); and a combination of 10% WSF and 90% CRF, were incorporated into a pine bark substrate at 0.30 kg N and P·m-3 in 3.7-L containers …