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Articles 4561 - 4590 of 13618
Full-Text Articles in Entire DC Network
Development And Application Of A Modis Inorganic Sediment Model During The 2016 Mississippi River Diversion In Lake Pontchartrain, Louisiana, Robert Lee Iles Iv
Development And Application Of A Modis Inorganic Sediment Model During The 2016 Mississippi River Diversion In Lake Pontchartrain, Louisiana, Robert Lee Iles Iv
LSU Master's Theses
The Bonnet Carré Spillway (BCS) is a Mississippi River diversion located on the southwestern coastline of Lake Pontchartrain in Louisiana. The discharge of potentially high amounts of Mississippi River nutrients and sediments during BCS diversion events has a noted ecological impact on the Lake Pontchartrain estuary. Projected river flooding prompted the opening of the Spillway from 10 January to 1 February 2016. MODIS satellite images were aerosol-corrected and then compared to in-situ measurements of inorganic sediment concentration (ISC) to derive a predictive algorithm for estimating ISC (in mg L^-1) in Lake Pontchartrain for satellite images in January and February. The …
Sediment Infilling Of Louisiana Continental-Shelf Dredge Pits: A Record Of Sedimentary Processes In The Northern Gulf Of Mexico, Meg Cathlin O'Connor
Sediment Infilling Of Louisiana Continental-Shelf Dredge Pits: A Record Of Sedimentary Processes In The Northern Gulf Of Mexico, Meg Cathlin O'Connor
LSU Master's Theses
Sediment cores were collected at continental-shelf sites of the Northern Gulf of Mexico off the coast of Louisiana to develop a better understanding of post-dredging evolution of mud-capped dredge pits. The two pits studied were Sandy Point (SP) and Raccoon Island (RI) (both with water depths of ~10m and dredged to ~ 15-20 m below water surface), which were dredged in 2012 and 2013 respectively. Vibracores and multicores were collected in 2015. Preliminary radiochemistry analyses identified Beryllium-7 distribution in multicore samples from both sites. SP1, the northwestern site in the Sandy Point dredge pit, showed 26 cm of 7Be penetration. …
A Comparative Study Of The Effects Of River Flow Rates On Decomposition, Maddisen Paige Neuman
A Comparative Study Of The Effects Of River Flow Rates On Decomposition, Maddisen Paige Neuman
LSU Master's Theses
While the general biological processes of decomposition are known to forensic anthropologists, data on aquatic decomposition is in need of refinement. Water composition varies in mineral content, temperature, flow rate, and scavengers; each of these elements can have an effect on the rate of decomposition. This study specifically focuses on the effects of river flow rates on decomposition by comparing the rate of decay of three feral pigs (Sus scrofa) on land (control specimen), in faster flowing water, and in slower flowing water. The hypothesis states that the pig placed in the faster section of the river will decompose more …
Effects Of Timing Of Local Anesthesia On Physiological Responses In Calves After Dehorning, Amanda Jane Mathias
Effects Of Timing Of Local Anesthesia On Physiological Responses In Calves After Dehorning, Amanda Jane Mathias
LSU Master's Theses
The American Veterinary Medical Association has stated the importance of minimizing pain associated with dehorning to limit the amount of distress and changes in the animal’s behavior and physiological states (AVMA, 2014b). The following studies aim to determine the effect of timing of lidocaine administration on physiological responses in calves after dehorning. The first study compared cortisol and substance P levels in calves dehorned immediately after administration of lidocaine and meloxicam, calves dehorned 10 minutes after the administration of lidocaine and meloxicam, and calves that were administered lidocaine and meloxicam and not dehorned. It was concluded waiting 10 minutes after …
Molecular Genetics Of Cold Tolerance At Germination And Seedling Stages In Rice, Anna Hissahe Borjas Artica
Molecular Genetics Of Cold Tolerance At Germination And Seedling Stages In Rice, Anna Hissahe Borjas Artica
LSU Master's Theses
Low temperature stress is a major constraint for rice production in temperate and high altitude areas of the world. Delayed germination coupled with reduced seedling vigor hinders crop establishment and crop growth resulting in reduced rice productivity. Mapping of chromosomal regions controlling cold tolerance will accelerate marker-assisted breeding of cold tolerant rice varieties. A recombinant inbred line (RIL) mapping population involving a rice cultivar ‘Bengal’ and a US weedy rice accession ‘PSRR-1’ was evaluated for cold tolerance at both germination and seedling stages. Observations on germinating ability and seedling vigor were recorded under both low temperature (13oC) and optimum temperature …
Vertebral Pathologies And Implications For Economic Lifestyle Changes In Two Prehistoric Skeletal Populations, Alyxandra Leigh Stanco
Vertebral Pathologies And Implications For Economic Lifestyle Changes In Two Prehistoric Skeletal Populations, Alyxandra Leigh Stanco
LSU Master's Theses
Little research considers the vertebral column in relation to inter-populational variation and changes in economic lifestyle. Numerous studies have been conducted regarding the influence of activity-related stress on post-cranial elements such as the knees, hips and shoulders, but few studies have considered the vertebral column. This study examined the vertebral columns of two prehistoric skeletal populations. The Indian Knoll site, home to a population of early hunter-gatherers, is located in Ohio County, Kentucky along the Green River. Indian Knoll was first excavated in 1915 by C.B. Moore. The Moundville site, a chiefdom of early agriculturalists, is located in the Black …
Evaluation Of Broad Anti-Herpesviral Activity With Α-Hydroxytropolones, Shannon David Dehghanpir
Evaluation Of Broad Anti-Herpesviral Activity With Α-Hydroxytropolones, Shannon David Dehghanpir
LSU Master's Theses
Herpesviruses are ubiquitous in animals and cause economic losses concomitant with many diseases, including upper respiratory disease, keratitis, abortion, neonatal death, and neurologic disease. The majority of the domestic animal herpesviruses are within the subfamily Alphaherpesvirinae, along with the prototypical human herpes simplex virus 1 (HSV-1). Suppression of HSV-1 replication has been reported with α-hydroxytropolones (αHTs), which are aromatic ring compounds that have broad bioactivity due to potent chelating activity. It is postulated that αHTs inhibit enzymes within the nucleotidyltransferase superfamily (NTS), similarly structured enzymes that require divalent cations for nucleic acid cleavage activity. One potential herpesviral target includes the …
Role Of Varietal Resistance In Managing The Rice Water Weevil, A Major Insect Pest Of Louisiana Rice, Maisarah Mohamad Saad
Role Of Varietal Resistance In Managing The Rice Water Weevil, A Major Insect Pest Of Louisiana Rice, Maisarah Mohamad Saad
LSU Master's Theses
Resistance of several commercial rice varieties widely grown in Louisiana was assessed against the rice water weevil (Lissorhoptrus oryzophilus Kuschel), the major insect pest of rice in the United States. A five-year field study was conducted to identify resistant genotypes among conventional inbred, herbicide tolerant, conventional hybrid, and herbicide tolerant hybrid varieties. Resistance was evaluated in two different locations to enable selection of rice varieties with wide adaptability over diverse environments. There were no large differences in the resistance found amongst commercial rice varieties over the five-year field study. Jefferson was frequently found to support lower larval densities than other …
Comparison Of Two Near-Isogenic Lines Of Bell Pepper (Capsicum Annuum): One Endornavirus-Infected And The Other Endornavirus-Free, Cesar Escalante Guardado
Comparison Of Two Near-Isogenic Lines Of Bell Pepper (Capsicum Annuum): One Endornavirus-Infected And The Other Endornavirus-Free, Cesar Escalante Guardado
LSU Master's Theses
Bell pepper (Capsicum annuum) is an economically important food crop cultivated worldwide. So far, all tested commercial cultivars have been shown to be infected with Bell pepper endornavirus (BPEV). Although BPEV does not cause apparent disease, the effect of this virus on bell pepper has not been investigated. A comparative study that included plant phenotype and some physiological characteristics was conducted with two near-isogenic lines (NIL) of the bell pepper cv. Marengo: one infected with BPEV and the other BPEV-free. The interaction of BPEV with a disease-causing virus of pepper, Pepper mild mottle virus (PMMoV), was also investigated. Differences in …
The Ontological Nature Of Theology: On Heidegger's "Phenomenology And Theology", Casey Garrett Spinks
The Ontological Nature Of Theology: On Heidegger's "Phenomenology And Theology", Casey Garrett Spinks
LSU Master's Theses
Following his newfound celebrity upon publication of Being and Time, Martin Heidegger delivered a lecture in 1927 and 1928, titled “Phenomenology and Theology,” where he discussed how his recent groundbreaking work in existential phenomenology relates to Christian theology. Far from offering his philosophy as a method for theology, he instead attempted to utterly separate the two, setting the former as fundamental ontology and the latter as a positive science more akin to history, with the Christian faith as its positive object of study. The lecture was left unpublished until 1969, when Heidegger added an appendix, a piece exemplary of the …
Optimization Of The Extraction Of Procyanidin B-2 Rich Extract From Unfermented Cocoa Using Response Surface Methodology And Interaction Of Procyanidin B-2 Rich Cocoa Extract With Collagenase And Elastase As Biomarkers Of Skin Aging, Marco Eduardo Toc Sagra
LSU Master's Theses
Skin ageing is a natural process accelerated by environmental exposure that generate reactive oxygen species and activates enzymes that degrade the integrity of the dermis. Cocoa powder (Theobroma cacao) is a good source of polyphenols, particularly procyanidins and flavan-3-ols, with potential enzyme inhibitory activities. In this study we determined whether cocoa extraction standardized to its procyanidin B-2 content has a potential application as anti-ageing bioactive compound. Oil-bath-assisted extraction (OBAE) and microwave-assisted extraction (MAE) were optimized for procyanidin B-2 rich extract using response surface methodology and water as solvent. Methanol (70% in water) extraction was the control to which other extraction …
Sociodemographic, Health, Health-Related, Health Risk, Psychosocial, And Treatment-Related Characteristics Associated With Retention Among Community Mental Health Clients In An Integrated Health Program, Katherine Anne Thomas
Sociodemographic, Health, Health-Related, Health Risk, Psychosocial, And Treatment-Related Characteristics Associated With Retention Among Community Mental Health Clients In An Integrated Health Program, Katherine Anne Thomas
LSU Master's Theses
Individuals with serious mental illness (SMI) have higher rates cardiometabolic conditions than the general population, which put them at increased risk for early mortality. Treatment retention is especially important as it may prevent worsening of mental and physical health symptoms and lower such risks. Models of integrated primary and behavioral health care (PBHC) are promising for treating co-morbid mental and physical health conditions common to individuals with SMI. Previous research identified that individuals with SMI drop out of care at higher rates than other individuals with mental illness. Past studies on treatment retention with this population have been qualitative and …
Composting The Garden: Hybrid Geographies Of Baton Rouge Urban Gardens, Lauren Hull
Composting The Garden: Hybrid Geographies Of Baton Rouge Urban Gardens, Lauren Hull
LSU Master's Theses
Home gardens are intimate spaces of interaction between humans and the natural world. This study examines how relations and practices within gardens both perpetuate and disrupt perspectives on human separateness from nature. Nine Baton Rouge gardeners participated in this study, sharing stories about their lives and garden through interviews and garden walk-throughs. By adopting more-than-human social theory, this study explores these stories to answer three questions: (1) What types of relationships are found between garden inhabitants in Baton Rouge? (2) How do these relationships influence garden practices? And (3) How do relationships and practices create hybrid garden spaces? Garden inhabitants …
Accumulation And Dynamics Of Petrogenic Pahs On Leaves Of Black Mangrove (Avicennia Germinans), Matthew Decell
Accumulation And Dynamics Of Petrogenic Pahs On Leaves Of Black Mangrove (Avicennia Germinans), Matthew Decell
LSU Master's Theses
Crude oil from Deepwater Horizon Macondo oil spill is currently present in Louisiana coastal surface sediments and its effects on the coastal ecosystem are still being realized. Deposition of 2- and 3-ring PAHs (alkylated naphthalenes and phenanthrenes) on the exterior of Spartina alterniflora and Avicennia germinans leaves have been demonstrated in marshes impacted by Macondo spill. Whether these deposition events result from contaminated tidal water or volatilization followed by deposition onto the leaf surface has not been conclusively established. Measurements of PAH deposition on the leaf surface of black mangrove (Avicennia germinans) can provide important evidence of the mechanism of …
Fitness Costs And Inheritance Of Bt Cry2ab2 Resistance In Fall Armyworm, Spodoptera Frugiperda (J.E. Smith), Binod Acharya
Fitness Costs And Inheritance Of Bt Cry2ab2 Resistance In Fall Armyworm, Spodoptera Frugiperda (J.E. Smith), Binod Acharya
LSU Master's Theses
Evolution of resistance in target pest populations is a major threat to the sustainability of transgenic crops expressing Bacillus thuringiensis (Bt) proteins. Fall armyworm, Spodoptera frugiperda (J.E. Smith), is a cross-crop target pest of Bt corn, Bt cotton, and Bt soybean. This pest, thus far, is the only target pest species that has developed field resistance to Bt crops in multiple areas across countries. Cry2Ab2 is a common Bt protein expressed in transgenic corn and cotton targeting lepidopteran pests including S. frugiperda. The objective of this study was to characterize fitness costs and inheritance of Cry2Ab2 resistance in S. frugiperda. …
Interrelationships Among Medication Types And Health Characteristics In Individuals With Bipolar Disorder Receiving Integrated Health Services, Laura Pier Valle
Interrelationships Among Medication Types And Health Characteristics In Individuals With Bipolar Disorder Receiving Integrated Health Services, Laura Pier Valle
LSU Master's Theses
Integrated primary and behavioral healthcare (PBHC) programs are a recent development in the field of mental health. The purpose of these programs is to combat the sizeable health discrepancies among persons with serious mental illness (SMI), who suffer from more comorbidities and lower life expectancy than the general population. Bipolar disorder (BPD) is a common SMI diagnosis that is associated with a substantial health burden. Research has shown that Bipolar disorder (BPD) responds well to medication, but clients with BPD often struggle with adherence to a medication regimen. Side effects and other health-related factors are often cited by clients as …
The Effectiveness Of Isco Injection Methods For Remediation Of Groundwater, Matthew Ryan Vidrine
The Effectiveness Of Isco Injection Methods For Remediation Of Groundwater, Matthew Ryan Vidrine
LSU Master's Theses
In-Situ Chemical Oxidation (ISCO) injections were performed at Petro Stopping Centers # 10 (Petro) in December 2013 and June 2015. The methodology was direct injection of a heavy oxidizer, RegenOx®, followed by a time-release oxygen compound, ORC Advanced®, into a plume of gasoline sitting on top of the water in the aquifer in hope that this remediate the aquifer. Both chemicals are registered trademarks of the Regenesis® Company. The levels of contaminates have dropped considerably. However, Petro has not achieved closure criteria according to RECAP standards. The site is classified as a GW-1B, subject to the most stringent of remediation …
On-Site Sperm Cryopreservation For Aquatic Repository Development And User Group Linkage, William Martin Childress
On-Site Sperm Cryopreservation For Aquatic Repository Development And User Group Linkage, William Martin Childress
LSU Master's Theses
Although on-site cryopreservation of aquatic species sperm in nitrogen-vapor shipping dewars has been used for more than 30 yr, many limitations remain. Due to the size of shipping dewars, most studies are small scale and can only produce tens of samples. The freezing temperatures that can be achieved are also affected by the size of the dewar and the number of samples being frozen due to the heat load. In addition, often due to timing or remote location these samples cannot be shipped, and if they are shipped, quality can be lost and the samples must be discarded. The goal …
Searching For The Genetic Components Responsible For Salt-Induced Flowering In The Extremophyte Schrenkiella Parvula, John Johnson
Searching For The Genetic Components Responsible For Salt-Induced Flowering In The Extremophyte Schrenkiella Parvula, John Johnson
Honors Capstones
No abstract provided.
Play With Power: A City Park Along The Trinity River, Xiwei Shen
Play With Power: A City Park Along The Trinity River, Xiwei Shen
Honors Capstones
No abstract provided.
Qpcr Amplification Of Heat Shock Protein 70 In Hybrid And Pure Populations Of Tigriopus Californicus, Angela Yoon
Qpcr Amplification Of Heat Shock Protein 70 In Hybrid And Pure Populations Of Tigriopus Californicus, Angela Yoon
Honors Capstones
No abstract provided.
Cold Tolerance And Overwintering Physiology Of The Salvinia Weevil (Cyrtobagous Salviniae): Improving The Biological Control Of Giant Salvinia In Temperate Louisiana, Alana D. Russell
LSU Master's Theses
Cyrtobagous salviniae is widely used for biological control of Salvinia molesta. Despite success in tropical and subtropical regions, the effectiveness of C. salviniae on S. molesta is inconsistent in temperate regions, indicating the need for a better understanding of the thermal biology of this agent. The objectives of this study were to compare cold tolerance of C. salviniae populations from the temperate native range and Louisiana, and characterize the overwintering physiology and population dynamics of C. salviniae in Louisiana. Surveys of the Lower Paraná-Uruguay Delta resulted in the first record of C. salviniae in Uruguay, and revealed the most southern …
Quizalofop-P-Ethyl Herbicide Interactions In Accase-Resistant Rice Production, Samer Y. Rustom Jr.
Quizalofop-P-Ethyl Herbicide Interactions In Accase-Resistant Rice Production, Samer Y. Rustom Jr.
LSU Master's Theses
A field study was conducted in 2015 and 2016 at the H. Rouse Caffey Rice Research Station (RRS) to evaluate mixture interactions of quizalofop and ALS-inhibiting herbicides. Quizalofop was applied at 120 g ai ha-1. Mixture herbicides included penoxsulam at 40 g ha-1, penoxsulam plus triclopyr at 352 g ha-1, halosulfuron at 53 g ha-1, bispyribac at 34 g ha-1, orthosulfamuron plus halosulfuron at 94 g ha-1, orthosulfamuron plus quinclorac at 491 g ha-1, imazosulfuron at 211 g ha-1, and bensulfuron at 43 g ha-1. All ALS herbicides mixed with quizalofop indicated antagonistic responses for weedy rice or barnyardgrass control …
Siah2 Protein Mediates Early Events In Commitment To An Adipogenic Pathway, Gail Kilroy, David H. Burk, Z. Elizabeth Floyd
Siah2 Protein Mediates Early Events In Commitment To An Adipogenic Pathway, Gail Kilroy, David H. Burk, Z. Elizabeth Floyd
Faculty Publications
© 2016 by The American Society for Biochemistry and Molecular Biology, Inc. Adipose tissue expansion occurs by increasing the size of existing adipocytes or by increasing the number of adipocytes via adipogenesis. Adipose tissue dysfunction in obesity is associated with adipocyte hypertrophy and impaired adipogenesis. We recently demonstrated that deletion of the ubiquitin ligase Siah2 is associated with enlarged adipocytes in lean or obese mice. In this study, we find that adipogenesis is impaired in 3T3-L1 preadipocytes stably transfected with Siah2 shRNA and that overexpression of Siah2 in non-precursor fibroblasts promotes adipogenesis. In the 3T3-L1 model, loss of Siah2 is …
Constraining Ribbon Rock Dolomitization By Mg Isotopes: Implications For The ‘Dolomite Problem’, Fang Bing Li, Fang Zhen Teng, Ji Tao Chen, Kang Jun Huang, Shui Jiong Wang, Xian Guo Lang, Hao Ran Ma, Yong Bo Peng, Bing Shen
Constraining Ribbon Rock Dolomitization By Mg Isotopes: Implications For The ‘Dolomite Problem’, Fang Bing Li, Fang Zhen Teng, Ji Tao Chen, Kang Jun Huang, Shui Jiong Wang, Xian Guo Lang, Hao Ran Ma, Yong Bo Peng, Bing Shen
Faculty Publications
© 2016 Elsevier B.V. Modern dolomite formation is conditional and restricted in specific environmental and geochemical conditions, accordingly cannot be used as the analog of ancient dolostones, which normally have platform-wide distribution. The key to understand ancient dolostone formation is to find a dolomitization process that is independent of physical/geochemical environments. It is well-known that ribbon rock (one type of calcareous rhythmites, sensu stricto referring to the alternating limestone and marlstone layers or the limestone-marl alternations) that are deposited in nearly all marine environments throughout the Earth's history, are exclusively, though normally partially, dolomitized. Thus, understanding ribbon rock dolomitization may …
Studying Soft-Matter And Biological Systems Over A Wide Length-Scale From Nanometer And Micrometer Sizes At The Small-Angle Neutron Diffractometer Kws-2, Aurel Radulescu, Noemi Kinga Szekely, Marie Sousai Appavou, Vitaliy Pipich, Thomas Kohnke, Vladimir Ossovyi, Simon Staringer, Gerald J. Schneider, Matthias Amann, Bo Zhang-Haagen, Georg Brandl, Matthias Drochner, Ralf Engels, Romuald Hanslik, Günter Kemmerling
Studying Soft-Matter And Biological Systems Over A Wide Length-Scale From Nanometer And Micrometer Sizes At The Small-Angle Neutron Diffractometer Kws-2, Aurel Radulescu, Noemi Kinga Szekely, Marie Sousai Appavou, Vitaliy Pipich, Thomas Kohnke, Vladimir Ossovyi, Simon Staringer, Gerald J. Schneider, Matthias Amann, Bo Zhang-Haagen, Georg Brandl, Matthias Drochner, Ralf Engels, Romuald Hanslik, Günter Kemmerling
Faculty Publications
© 2016 Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The KWS-2 SANS diffractometer is dedicated to the investigation of soft matter and biophysical systems covering a wide length scale, from nm to µm. The instrument is optimized for the exploration of the wide momentum transfer Q range between 1x10-4 and 0.5 Å-1 by combining classical pinhole, focusing (with lenses), and time-of-flight (with chopper) methods, while simultaneously providing high-neutron intensities with an adjustable resolution. Because of its ability to adjust the intensity and the resolution within wide limits during the experiment, combined with the possibility to equip specific sample environments and ancillary …
Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu
Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu
Faculty Publications
© The Author(s) 2016. Due to the adverse impact of DDTs on ecosystems and humans, a full fate assessment deems a comprehensive study on their occurrence in soils over a large region. Through a sampling campaign across China, we measured the concentrations, enantiomeric fractions (EFs), compound-specific carbon isotope composition of DDT and its metabolites, and the microbial community in related arable soils. The geographically total DDT concentrations are higher in eastern than western China. The EFs and δ13 C of o,p'-DDT in soils from western China show smaller deviations from those of racemic/standard compound, indicating the DDT residues there mainly …
Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu
Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu
Faculty Publications
© The Author(s) 2016. Due to the adverse impact of DDTs on ecosystems and humans, a full fate assessment deems a comprehensive study on their occurrence in soils over a large region. Through a sampling campaign across China, we measured the concentrations, enantiomeric fractions (EFs), compound-specific carbon isotope composition of DDT and its metabolites, and the microbial community in related arable soils. The geographically total DDT concentrations are higher in eastern than western China. The EFs and δ13 C of o,p'-DDT in soils from western China show smaller deviations from those of racemic/standard compound, indicating the DDT residues there mainly …
Transcription Factor Reb1 Is Required For Proper Transcriptional Start Site Usage At The Divergently Transcribed Tfc6-Esc2 Locus In Saccharomyces Cerevisiae, Qing Wang, David Donze
Transcription Factor Reb1 Is Required For Proper Transcriptional Start Site Usage At The Divergently Transcribed Tfc6-Esc2 Locus In Saccharomyces Cerevisiae, Qing Wang, David Donze
Faculty Publications
© 2016 Elsevier B.V. Eukaryotic promoters generally contain nucleosome depleted regions near their transcription start sites. In the model organism Saccharomyces cerevisiae, these regions are adjacent to binding sites for general regulatory transcription factors, and the Reb1 protein is commonly bound to promoter DNA near such regions. The yeast TFC6 promoter is a unique RNA polymerase II promoter in that it is autoregulated by its own gene product Tfc6p, which is part of the RNA polymerase III transcription factor complex TFIIIC. We previously demonstrated that mutation of a potential Reb1 binding site adjacent to the TFIIIC binding site in the …
Multilevel Perspective On High-Order Harmonic Generation In Solids, Mengxi Wu, Dana A. Browne, Kenneth J. Schafer, Mette B. Gaarde
Multilevel Perspective On High-Order Harmonic Generation In Solids, Mengxi Wu, Dana A. Browne, Kenneth J. Schafer, Mette B. Gaarde
Faculty Publications
We investigate high-order harmonic generation in a solid, modeled as a multilevel system dressed by a strong infrared laser field. We show that the cutoff energies and the relative strengths of the multiple plateaus that emerge in the harmonic spectrum can be understood both qualitatively and quantitatively by considering a combination of adiabatic and diabatic processes driven by the strong field. Such a model was recently used to interpret the multiple plateaus exhibited in harmonic spectra generated by solid argon and krypton [G. Ndabashimiye, Nature 534, 520 (2016)NATUAS0028-083610.1038/nature17660]. We also show that when the multilevel system originates from the Bloch …