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Articles 5701 - 5730 of 45176
Full-Text Articles in Entire DC Network
Historical Dna Solves An Evolutionary Mystery And Explains The Origin Of A Novel Phenotype In The New World Quails, Jessie Frances Salter
Historical Dna Solves An Evolutionary Mystery And Explains The Origin Of A Novel Phenotype In The New World Quails, Jessie Frances Salter
LSU Doctoral Dissertations
Observations of phenotypic diversity among closely-related organisms, especially those preserved as museum specimens, have driven the fields of systematics, taxonomy, and evolutionary biology for hundreds of years. In this dissertation, I used genomic data from modern and historical specimens to investigate the evolutionary processes that have generated phenotypic and genetic diversity in a highly polytypic group of birds, the New World quails (Odontophoridae), with a focus on the most phenotypically diverse member of this family: Northern Bobwhites (Colinus virginianus). To facilitate this work, I began by generating a highly contiguous reference genome assembly for Northern Bobwhites, which is …
Evaluation Of Seasonal Heat Stress On Transcriptomic Profiles And Global Dna Methylation Of Bovine Oocytes, Fabian A. Diaz, Emilio J. Gutierrez-Castillo, Brittany A. Foster, Paige T. Hardin, Kenneth R. Bondioli, Zongliang Jiang
Evaluation Of Seasonal Heat Stress On Transcriptomic Profiles And Global Dna Methylation Of Bovine Oocytes, Fabian A. Diaz, Emilio J. Gutierrez-Castillo, Brittany A. Foster, Paige T. Hardin, Kenneth R. Bondioli, Zongliang Jiang
Faculty Publications
Heat stress affects oocyte developmental competence and is a major cause of reduced fertility in heat stressed cattle. Negative effects of heat stress on the oocyte have been observed at morphological, biochemical and developmental levels. However, the mechanisms by which heat stress affects the oocyte at the transcriptional and epigenetic levels remain to be further elucidated. Here we aimed to investigate the effect of heat stress on oocyte quality, transcriptomic profiles and DNA methylation of oocytes collected through the transition from spring to summer under Louisiana conditions. Summer season resulted in a lower number of high quality oocytes obtained compared …
Effects Of Narrow-Windrow Burning On Weed Dynamics In Soybean In Louisiana, Katie M. Patterson, Lauren M. Schwartz-Lazaro, Gabrielle Labiche, Daniel O. Stephenson
Effects Of Narrow-Windrow Burning On Weed Dynamics In Soybean In Louisiana, Katie M. Patterson, Lauren M. Schwartz-Lazaro, Gabrielle Labiche, Daniel O. Stephenson
Faculty Publications
The soil seedbank allows for long-term persistence of weed species in agricultural fields. Some weed species can persist in the soil seedbank for extended periods. Restricting inputs into the weed seedbank has a large impact on future population density and influences management practices of these weeds in soybean production systems. Harvest weed seed control (HWSC) tactics incorporate mechanical and cultural management strategies to target weed seeds present at harvest. A 3-year trial was initiated to determine if continual use of the HWSC method, narrow windrow burning, selects for earlier seed set and shattering in Louisiana soybean. No shifts in weed …
Colloidal Nanomaterial Surface Chemistry And Characterization Studied By Linear And Nonlinear Spectroscopy, Asela Sampath Dikkumbura
Colloidal Nanomaterial Surface Chemistry And Characterization Studied By Linear And Nonlinear Spectroscopy, Asela Sampath Dikkumbura
LSU Doctoral Dissertations
Recent studies have demonstrated the use of nanomaterials such as metallic nanoparticles, liposomes, and polymer microparticles for biomedical applications, encompassing the field of nanomedicine. For developing novel core-shell metallic nanoparticles with controlled surface morphology, the in situ growth dynamics of colloidal silver-gold core-shell (Ag@Au CS) nanoparticles (NPs) in water are monitored in a stepwise synthesis approach using time-dependent second harmonic generation (SHG) and extinction spectroscopy. Transmission electron microscopy images show that the CS NP surface morphology becomes more smooth and uniform as the reaction proceeds, corresponding to lower, stable SHG signals and narrower plasmonic spectra that are compared to finite-difference …
Ross Sea Dissolved Organic Matter Optical Properties During An Austral Summer: Biophysical Influences, Eurico J. D'Sa, Hyun-Cheol Kim, Sun-Yong Ha, Ishan Joshi
Ross Sea Dissolved Organic Matter Optical Properties During An Austral Summer: Biophysical Influences, Eurico J. D'Sa, Hyun-Cheol Kim, Sun-Yong Ha, Ishan Joshi
Faculty Publications
The Ross Sea, one of the most productive regions in the Southern Ocean, plays a significant role in deep water formation and carbon cycling. Dissolved organic carbon (DOC) concentrations and chromophoric dissolved organic matter (CDOM) absorption and fluorescence (FDOM) properties were studied in conjunction with biophysical properties during austral summer. Elevated values of both DOC (mean 47.82 ± 5.70 μM) and CDOM (absorption coefficient at 325 nm, acdom325: mean 0.31 ± 0.18 m–1) observed in the upper shelf waters in the southwest (SW), north of the Ross Ice Shelf (RIS), the northwest and along a transect inward of the shelf …
Microbial Ecology Of Oxygen Minimum Zones Amidst Ocean Deoxygenation, Andrew M. Long, Sophie K. Jurgensen, Ariel R. Petchel, Emily R. Savoie, Jennifer R. Brum
Microbial Ecology Of Oxygen Minimum Zones Amidst Ocean Deoxygenation, Andrew M. Long, Sophie K. Jurgensen, Ariel R. Petchel, Emily R. Savoie, Jennifer R. Brum
Faculty Publications
Oxygen minimum zones (OMZs) have substantial effects on the global ecology and biogeochemical processes of marine microbes. However, the diversity and activity of OMZ microbes and their trophic interactions are only starting to be documented, especially in regard to the potential roles of viruses and protists. OMZs have expanded over the past 60 years and are predicted to expand due to anthropogenic climate change, furthering the need to understand these regions. This review summarizes the current knowledge of OMZ formation, the biotic and abiotic factors involved in OMZ expansion, and the microbial ecology of OMZs, emphasizing the importance of bacteria, …
Shape-Based Classification Of Partially Observed Curves, With Applications To Anthropology, Gregory J. Matthews, Karthik Bharath, Sebastian Kurtek, Juliet K. Brophy, George K. Thiruvathukal, Ofer Harel
Shape-Based Classification Of Partially Observed Curves, With Applications To Anthropology, Gregory J. Matthews, Karthik Bharath, Sebastian Kurtek, Juliet K. Brophy, George K. Thiruvathukal, Ofer Harel
Faculty Publications
We consider the problem of classifying curves when they are observed only partially on their parameter domains. We propose computational methods for (i) completion of partially observed curves; (ii) assessment of completion variability through a nonparametric multiple imputation procedure; (iii) development of nearest neighbor classifiers compatible with the completion techniques. Our contributions are founded on exploiting the geometric notion of shape of a curve, defined as those aspects of a curve that remain unchanged under translations, rotations and reparameterizations. Explicit incorporation of shape information into the computational methods plays the dual role of limiting the set of all possible completions …
A Clark-Ocone Type Formula Via Itô Calculus And Its Application To Finance, Takuji Arai, Ryoichi Suzuki
A Clark-Ocone Type Formula Via Itô Calculus And Its Application To Finance, Takuji Arai, Ryoichi Suzuki
Journal of Stochastic Analysis
No abstract provided.
Energy Compensation And Adiposity In Humans, Vincent Careau, Lewis G. Halsey, Herman Pontzer, Philip N. Ainslie, Lene F. Andersen, Liam J. Anderson, Lenore Arab, Issad Baddou, Kweku Bedu-Addo, Ellen E. Blaak, Stephane Blanc, Alberto G. Bonomi, Carlijn V.C. Bouten, Maciej S. Buchowski, Nancy F. Butte, Stefan G.J.A. Camps, Graeme L. Close, Jamie A. Cooper, Sai Krupa Das, Richard Cooper, Lara R. Dugas, Simon D. Eaton, Ulf Ekelund, Sonja Entringer, Terrence Forrester, Barry W. Fudge, Annelies H. Goris, Michael Gurven, Catherine Hambly, Asmaa El Hamdouchi, Marije B. Hoos, Sumei Hu, Noorjehan Joonas
Energy Compensation And Adiposity In Humans, Vincent Careau, Lewis G. Halsey, Herman Pontzer, Philip N. Ainslie, Lene F. Andersen, Liam J. Anderson, Lenore Arab, Issad Baddou, Kweku Bedu-Addo, Ellen E. Blaak, Stephane Blanc, Alberto G. Bonomi, Carlijn V.C. Bouten, Maciej S. Buchowski, Nancy F. Butte, Stefan G.J.A. Camps, Graeme L. Close, Jamie A. Cooper, Sai Krupa Das, Richard Cooper, Lara R. Dugas, Simon D. Eaton, Ulf Ekelund, Sonja Entringer, Terrence Forrester, Barry W. Fudge, Annelies H. Goris, Michael Gurven, Catherine Hambly, Asmaa El Hamdouchi, Marije B. Hoos, Sumei Hu, Noorjehan Joonas
Faculty Publications
Understanding the impacts of activity on energy balance is crucial. Increasing levels of activity may bring diminishing returns in energy expenditure because of compensatory responses in non-activity energy expenditures.1–3 This suggestion has profound implications for both the evolution of metabolism and human health. It implies that a long-term increase in activity does not directly translate into an increase in total energy expenditure (TEE) because other components of TEE may decrease in response—energy compensation. We used the largest dataset compiled on adult TEE and basal energy expenditure (BEE) (n = 1,754) of people living normal lives to find that energy compensation …
Cross-Sectional Examination Of 24-Hour Movement Behaviours Among 3- And 4-Year-Old Children In Urban And Rural Settings In Low-Income, Middle-Income And High-Income Countries- And Sunrise Study Protocol, Tony Okely, John J. Reilly, Mark S. Tremblay, Katharina E. Kariippanon, Catherine E. Draper, Asmaa El Hamdouchi, Alex A. Florindo, Janette P. Green, Hongyan Guan, Peter T. Katzmarzyk, Himangi Lubree, Bang Nguyen Pham, Thomas Suesse, Juana Willumsen, Mohamed Basheer, Rebecca Calleia, Kar Hau Chong, Penny L. Cross, Maria Nacher, Laura Smeets, Ellie Taylor, Chalchisa Abdeta, Nicolas Aguilar-Farias, Aqsa Baig, Jambaldori Bayasgalan, Cecilia H.S. Chan, P. W.Prasad Chathurangana, Michael Chia, Fazlollah Ghofranipour, Amy S. Ha, Mohammad Sorowar Hossain, Xanne Janssen, Alejandra Jáuregui, Piyawat Katewongsa
Cross-Sectional Examination Of 24-Hour Movement Behaviours Among 3- And 4-Year-Old Children In Urban And Rural Settings In Low-Income, Middle-Income And High-Income Countries- And Sunrise Study Protocol, Tony Okely, John J. Reilly, Mark S. Tremblay, Katharina E. Kariippanon, Catherine E. Draper, Asmaa El Hamdouchi, Alex A. Florindo, Janette P. Green, Hongyan Guan, Peter T. Katzmarzyk, Himangi Lubree, Bang Nguyen Pham, Thomas Suesse, Juana Willumsen, Mohamed Basheer, Rebecca Calleia, Kar Hau Chong, Penny L. Cross, Maria Nacher, Laura Smeets, Ellie Taylor, Chalchisa Abdeta, Nicolas Aguilar-Farias, Aqsa Baig, Jambaldori Bayasgalan, Cecilia H.S. Chan, P. W.Prasad Chathurangana, Michael Chia, Fazlollah Ghofranipour, Amy S. Ha, Mohammad Sorowar Hossain, Xanne Janssen, Alejandra Jáuregui, Piyawat Katewongsa
Population and Public Health Science Faculty Publications
Introduction 24-hour movement behaviours (physical activity, sedentary behaviour and sleep) during the early years are associated with health and developmental outcomes, prompting the WHO to develop Global guidelines for physical activity, sedentary behaviour and sleep for children under 5 years of age. Prevalence data on 24-hour movement behaviours is lacking, particularly in low-income and middle-income countries (LMICs). This paper describes the development of the SUNRISE International Study of Movement Behaviours in the Early Years protocol, designed to address this gap. Methods and analysis SUNRISE is the first international cross-sectional study that aims to determine the proportion of 3- and 4-year-old …
Classifying Soft X-Ray Objects In The Galactic Bulge, Joshua D. Wetuski
Classifying Soft X-Ray Objects In The Galactic Bulge, Joshua D. Wetuski
LSU Doctoral Dissertations
The Galactic Bulge Survey (GBS) is a broad and shallow X-ray survey designed to detect quiescent X-ray binary systems in the direction of the Milky Way bulge, which include objects such as low-mass X-ray binaries, cataclysmic variables, and symbiotic binaries. LMXBs can provide constraints to the neutron star equation of state and symbiotic systems and are likely progenitors of double white dwarf systems which are themselves candidate progenitors to type Ia supernova. We seek to improve identification and classification of optical counterparts to GBS in several ways. By improving upon the original GBS, an updated catalog was created to help …
Assessment Of Cash Value Benefits And The Effects On Participant Vegetable Consumption In The Louisiana Wic Program, Celia Rene Bridgeforth
Assessment Of Cash Value Benefits And The Effects On Participant Vegetable Consumption In The Louisiana Wic Program, Celia Rene Bridgeforth
LSU Doctoral Dissertations
The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) is administered by the United States Department of Agriculture (USDA) Food and Nutrition Service (FNS). The WIC program serves low-income women, infants, and children by providing supplemental foods, nutrition education, breastfeeding support and promotion, and referrals to healthcare and social service programs (Oliveira & Frazão, 2015). Revisions of the WIC food packages to include cash value benefits (CVB) that provided WIC participants the opportunity to purchase fruits and vegetables with their WIC benefits. There is significant research that indicates the benefit of F.V. consumption and the impact on diet-related …
Using Digital Libraries To Engage The Whole Student: Culturally Sustaining Pedagogies, Trauma-Informed Classrooms, And Project-Based Learning, Alejandra Torres
Using Digital Libraries To Engage The Whole Student: Culturally Sustaining Pedagogies, Trauma-Informed Classrooms, And Project-Based Learning, Alejandra Torres
Journal of Critical Digital Librarianship
Engaging students with an online library does not have to be limited to research purposes only. This essay includes lesson plan ideas that use the Louisiana Digital Library to engage middle and high school students in ways that help amplify their curiosity and explore their identities. To ensure the lesson plans engage the whole student, I ground them in three components (culturally sustaining pedagogies, trauma-informed classrooms, and project-based learning) and seven core values. These lessons could be used alone as writing workshops or can be used to introduce or make connections to other concepts. The activities are adaptable to fit …
Listening, Care, And Collections As Data, Jacqueline Wernimont
Listening, Care, And Collections As Data, Jacqueline Wernimont
Journal of Critical Digital Librarianship
This paper takes the sonification (the translation into sound) of data from sterilization recommendations made under eugenic laws in the United States as a case study in navigating the terrain between a commitment to caring for and with impacted communities and the potential affordances and perils of using sensitive collections as data. The author discusses ways that feminist care ethics and collections as data research intersect in a digital humanities project.
Centering The Margins In Digital Project Planning, Dorothy Berry
Centering The Margins In Digital Project Planning, Dorothy Berry
Journal of Critical Digital Librarianship
This paper uses the example of the development of a digital collections program at Harvard University’s Houghton Library to provide an introduction to building programmatic and equitable collections online. Focusing on why, how, and what goes into programmatic digital collections through examples of ongoing project workflows and special projects workflows, the paper introduces methods for digital project planning that center diverse histories.
It Matters Who Does This Work: An Interview With Tonia Sutherland, Sophia Ziegler
It Matters Who Does This Work: An Interview With Tonia Sutherland, Sophia Ziegler
Journal of Critical Digital Librarianship
Tonia Sutherland (she/her) is assistant professor in the Library and Information Science Program at the University of Hawaiʻi at Mānoa. She serves on the SAA Council, and is author of the forthcoming book Digital Remains: Race and the Digital Afterlife. Dr. Sutherland holds a Ph.D. and an MLIS from the University of Pittsburgh’s School of Computing and Information, as well as a BA in history, performance studies, and cultural studies from Hampshire College. Her work focuses on the interactions of technology and culture, and emphasizes critical work within the fields of archival studies, digital studies, and science and technology studies. …
Editors' Introduction, Sophia Ziegler, Leah Powell Duncan, Gina Costello
Editors' Introduction, Sophia Ziegler, Leah Powell Duncan, Gina Costello
Journal of Critical Digital Librarianship
No abstract provided.
Interactions Between Prepregnancy Overweight And Passive Smoking For Macrosomia And Large For Gestational Age In Chinese Pregnant Women, Dingyu Cui, Wen Yang, Ping Shao, Jing Li, Peng Wang, Junhong Leng, Shuo Wang, Enqing Liu, Juliana C.N. Chan, Zhijie Yu, Gang Hu, Xilin Yang
Interactions Between Prepregnancy Overweight And Passive Smoking For Macrosomia And Large For Gestational Age In Chinese Pregnant Women, Dingyu Cui, Wen Yang, Ping Shao, Jing Li, Peng Wang, Junhong Leng, Shuo Wang, Enqing Liu, Juliana C.N. Chan, Zhijie Yu, Gang Hu, Xilin Yang
Population and Public Health Science Faculty Publications
Introduction: Previous analysis showed that passive smoking and overweight were associated with an increased risk of gestational diabetes mellitus (GDM) in a synergistic manner, while GDM increased the risk of macrosomia/large for gestational age (LGA). This study aimed to examine any interactive effects between passive smoking and overweight/obesity on risk of macrosomia/LGA. Methods: From 2010 to 2012, 22,302 pregnant women registered for pregnancy at a primary hospital in Tianjin, China. Data were collected longitudinally; that is, from their first antenatal care visit, at the glucose challenge test (GCT) time (24-28 weeks of gestation) and at delivery. Passive smoking was self-reported. …
The Young Black Girl: A Narration Of Stem Identity Through Science Origin In Elementary School, Heather F. Lavender
The Young Black Girl: A Narration Of Stem Identity Through Science Origin In Elementary School, Heather F. Lavender
LSU Doctoral Dissertations
An ethnographic qualitative case study was conducted by examining the perceptions of two 5th grade Black girls at an independent school about their involvement with school science, the impact of race and gender towards their perception, and the influence of teachers, peers, and family on their science identity. Black girls are often relegated to outsider status within the classroom, lacking power and authority, which results in Black girls being denied a rightful presence in their learning community (Dumas & Ross, 2016). Additionally, their presence in STEM careers does not reflect their presence nationwide (Graves et al., 2014). The proposed …
Calculating Infinitesimal Generators, Majnu John, Yihren Wu
Calculating Infinitesimal Generators, Majnu John, Yihren Wu
Journal of Stochastic Analysis
No abstract provided.
Integrated Nutrient Management And Cover Cropping Practices In Louisiana Sugarcane Production Systems, Daniel Erneso Forestieri
Integrated Nutrient Management And Cover Cropping Practices In Louisiana Sugarcane Production Systems, Daniel Erneso Forestieri
LSU Doctoral Dissertations
Integrating effective fertilizer management with conservation practices is essential to improve farm income and promote environment friendly sugarcane production systems. A study was conducted in multiple to document the impact of nitrogen (N) source and cover cropping on sugarcane yield and quality components. The treatment consisted of different N sources: urea, knife-in urea ammonium nitrate (UAN) solution, calcium nitrate-CaNO3, ammonium sulfate-NH4SO4, and knife-in UAN. + foliar N, applied at 90 kg ha-1 and control (0 N). The cover crops included: crimson clover (Trifolium incarnatum), hairy vetch (Vicia villosa), and oilseed radish (Raphanus sativus L.) planted at 13, 17, and 1 …
Binary And Ternary Toxicological Interactions Of Clothianidin And Eight Commonly Used Pesticides On Honey Bees (Apis Mellifera), Yanhua Wang, Yu Cheng Zhu, Wenhong Li, Jianxiu Yao, Gadi V.P. Reddy, Lu Lv
Binary And Ternary Toxicological Interactions Of Clothianidin And Eight Commonly Used Pesticides On Honey Bees (Apis Mellifera), Yanhua Wang, Yu Cheng Zhu, Wenhong Li, Jianxiu Yao, Gadi V.P. Reddy, Lu Lv
Faculty Publications
Although many toxicological evaluations have been conducted for honey bees (Apis mellifera), most of these studies have only focused on the effects of individual chemicals. However, honey bees are usually exposed to pesticide mixtures under field conditions. In this study, we examined the effects of individual pesticides and mixtures of clothianidin (CLO) with eight other pesticides [carbaryl (CAR), thiodicarb (THI), chlorpyrifos (CHL), beta-cyfluthrin (BCY), gamma-cyhalothrin (GCY), tetraconazole (TET), spinosad (SPI) and indoxacarb (IND)] on honey bees using a feeding method. Toxicity tests of a 4-day exposure to individual pesticides revealed that CLO had the highest toxicity to A. mellifera, with …
Novel Optimal Multisensor Placement For Indoor Rectilinear Line-Of-Sight Coverage, Prasanga Neupane, Guannan Liu, Hsiao Chun Wu, Shih Yu Chang, Jinwei Ye
Novel Optimal Multisensor Placement For Indoor Rectilinear Line-Of-Sight Coverage, Prasanga Neupane, Guannan Liu, Hsiao Chun Wu, Shih Yu Chang, Jinwei Ye
Faculty Publications
Optimal multisensor placement/deployment for an arbitrary indoor geometry still remains very challenging nowadays. It is preferable to minimize the number of sensors which can still cover the entire indoor space with a balanced load. However, this multi-objective problem is quite complex in practice. In this work, we will study this critical multisensor placement problem mathematically and algorithmically and propose a systematic approach to tackle this problem. In this paper, we focus on the line-of-sight (LoS) coverage within a rectilinear indoor environment and the sensors' locations are restricted on the perimeter. Our proposed new approach consists of two stages. First, a …
Potent Anti-Inflammatory, Arylpyrazole-Based Glucocorticoid Receptor Agonists That Do Not Impair Insulin Secretion, Brandon J. Kennedy, Ashley M. Lato, Alexander R. Fisch, Susan J. Burke, Justin K. Kirkland, Carson W. Prevatte, Lee E. Dunlap, Russell T. Smith, Konstantinos D. Vogiatzis, J. Jason Collier, Shawn R. Campagna
Potent Anti-Inflammatory, Arylpyrazole-Based Glucocorticoid Receptor Agonists That Do Not Impair Insulin Secretion, Brandon J. Kennedy, Ashley M. Lato, Alexander R. Fisch, Susan J. Burke, Justin K. Kirkland, Carson W. Prevatte, Lee E. Dunlap, Russell T. Smith, Konstantinos D. Vogiatzis, J. Jason Collier, Shawn R. Campagna
Division of Basic Science Faculty Publications
Glucocorticoids (GCs) are widely used in medicine for their role in the treatment of autoimmune-mediated conditions, certain cancers, and organ transplantation. The transcriptional activities GCs elicit include transrepression, postulated to be responsible for the anti-inflammatory activity, and transactivation, proposed to underlie the undesirable side effects associated with long-term use. A GC analogue that could elicit only transrepression and beneficial transactivation properties would be of great medicinal value and is highly sought after. In this study, a series of 1-(4-substituted phenyl)pyrazole-based GC analogues were synthesized, biologically screened, and evaluated for SARs leading to the desired activity. Activity observed in compounds bearing …
Recursive And Viterbi Estimation For Semi-Markov Chains, Robert J. Elliott, W. P. Malcolm
Recursive And Viterbi Estimation For Semi-Markov Chains, Robert J. Elliott, W. P. Malcolm
Journal of Stochastic Analysis
No abstract provided.
Integration Of Host Plant Resistance And Cultural Tactics For Management Of Root- And Stem-Feeding Insect Pests In Rice, James M. Villegas, Blake E. Wilson, Michael J. Stout
Integration Of Host Plant Resistance And Cultural Tactics For Management Of Root- And Stem-Feeding Insect Pests In Rice, James M. Villegas, Blake E. Wilson, Michael J. Stout
Faculty Publications
The rice water weevil, Lissorhoptrus oryzophilus Kuschel, is the most important early-season pest of rice in the U.S. Additionally, lepidopteran stem-boring pests particularly the invasive Mexican rice borer, Eoreuma loftini (Dyar), are increasingly becoming problematic in Louisiana rice. Although insecticidal seed treatments have been widely adopted and have proven highly effective against weevils and stemborers, alternative management tactics are needed. This study was conducted to evaluate the effects of flood timing and rice cultivar on rice water weevil and stemborer infestations. Field experiments were conducted in Crowley, Louisiana, from 2019–2020. In each year, early- and late-planted trials were established according …
A Student's Pathway To Success: Understanding The Connectivity Between High School Counselors' Self- Efficacy And College And Career Advising, Amanda Belanger Lacerte
A Student's Pathway To Success: Understanding The Connectivity Between High School Counselors' Self- Efficacy And College And Career Advising, Amanda Belanger Lacerte
LSU Doctoral Dissertations
The purpose of this qualitative study was to understand how a high school counselor’s perceived self-efficacy impacts high school student advising sessions as it pertains to the student’s program of study and course selection. The foundation of this study was grounded in Bandura’s (1986) Social Cognitive Theory (SCT). This single case study was conducted at The Red Stick School located in an urban area in the Deep South. The study included 5 high school counselors as participants who participated in virtual interviews. Explanation building was the qualitative analytical technique used to analyze the data and explain how and/or why students …
Diffusional Fractionation Of Helium Isotopes In Silicate Melts, Haiyang Luo, Bijaya Karki, Dipta B. Ghosh, Huiming Bao
Diffusional Fractionation Of Helium Isotopes In Silicate Melts, Haiyang Luo, Bijaya Karki, Dipta B. Ghosh, Huiming Bao
Faculty Publications
Estimating Helium (He) concentration and isotope composition of the mantle requires quantifying He loss during magma degassing. The knowledge of diffusional He isotope fractionation in silicate melts may be essential to constrain the He loss. Isotopic mass dependence of He diffusion can be empirically expressed as D3He/D4He = (4/3)^β, where D is the diffusivity of a He isotope. However, no studies have reported any β values for He in silicate melts due to technical challenges in both experiments and computations. Here, molecular dynamics simulations based on deep neural network potentials trained by ab initio data …
Investigation Of Spotted Fever Group Rickettsia Pathogenesis Of Mammalian Cells, Paige Elise Allen
Investigation Of Spotted Fever Group Rickettsia Pathogenesis Of Mammalian Cells, Paige Elise Allen
LSU Doctoral Dissertations
Spotted fever group (SFG) Rickettsia are obligate intracellular bacteria that are transmitted by ticks during a bloodmeal to a mammalian host. Interestingly, the SFG pathogen, Rickettsia conorii, has been shown to infect and grow in macrophages with a similar efficiency as the target endothelial cell, whereas a non-human pathogenic counterpart, Rickettsia montanensis, is unable to grow within macrophages. We have since determine that this phenotype applies to other pathogenic and non-human pathogenic Rickettsia, showing a correlation with growth in macrophages and rickettsial virulence. Recently, our lab has also defined host proteins that are altered during macrophage infection with …
The N-Dimensional Quadratic Heisenberg Algebra As A “Non–Commutative” Sl(2,C), Luigi Accardi, Andreas Boukas, Yun-Gang Lu
The N-Dimensional Quadratic Heisenberg Algebra As A “Non–Commutative” Sl(2,C), Luigi Accardi, Andreas Boukas, Yun-Gang Lu
Journal of Stochastic Analysis
No abstract provided.