Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1711 - 1740 of 45158

Full-Text Articles in Entire DC Network

Sequencing Orchestral Repertoire For Collegiate Orchestras: Addressing The Educational Needs Of Students In Various Stages Of Development, Cheuk Nok Francis Ku Apr 2024

Sequencing Orchestral Repertoire For Collegiate Orchestras: Addressing The Educational Needs Of Students In Various Stages Of Development, Cheuk Nok Francis Ku

LSU Doctoral Dissertations

Sequencing is a fundamental aspect of music education, not only in individual instrumental teaching but also in large-ensemble instruction. Collegiate orchestras, like other educational ensembles, experience turnover of students each academic year, and face unique challenges in repertoire selection due to the diverse skill levels and experience of their members. This document presents a case study of the LSU Symphony Orchestra program spanning from 2021 to 2024, and complements a performance featuring works by Amy Beach, Ludwig van Beethoven, Joseph Haydn, and José Pablo Moncayo. The document also delved into the study of performance practice during the Classical period and …


Decoding Affective Information From Neuronal Populations In The Human Hippocampus, Alexander N. Lawriw Apr 2024

Decoding Affective Information From Neuronal Populations In The Human Hippocampus, Alexander N. Lawriw

LSU Master's Theses

The hippocampus is understood to play a key role in the formation of episodic memories. Prominent theories suggest this is made possible through use of sparse encoding schemes, in which a small number of neurons encode each episodic event using a distinct pattern of neuronal activity. However, more recent computational models suggest that the hippocampus may also be capable of representing semantic structure, a notion previously thought to be exclusive to the neocortex. In our previous line of work, we trained multivariate classifiers to predict the semantic content, specifically affect, of computer-generated faces given spiking data taken from individual neurons …


Effects Of Iconic Gestures On Word Pair Learning In Autistic And Non-Autistic Adults, Caprielle G. Priola Apr 2024

Effects Of Iconic Gestures On Word Pair Learning In Autistic And Non-Autistic Adults, Caprielle G. Priola

LSU Master's Theses

Previous studies have demonstrated that simultaneous speech and iconic gestures enhance learning and memory for listeners. Additionally, metacognitive awareness, which can be measured through judgements of learning (JOLs), has also been shown to impact learning and memory. However, it has not been established that these benefits apply to all learners. Existing studies on gesture processing and metacognitive abilities in autistic adults yield mixed findings. The present study aims to investigate the impact of co-speech iconic gestures on word pair recall and perceived learning (JOLs) in autistic and non-autistic adults.

Forty non-autistic adults and 40 autistic adults participated in an online …


Geospatial Analysis Of Historical Tropical Cyclone Intensity And Rainfall In Georgia, United States, Reilly T. Corkran Apr 2024

Geospatial Analysis Of Historical Tropical Cyclone Intensity And Rainfall In Georgia, United States, Reilly T. Corkran

LSU Master's Theses

Tropical cyclones, characterized by their high wind speeds and heavy rainfall, cause widespread devastation, affecting millions of people and leading to economic losses worldwide. Tropical cyclone-specific research in Georgia is scarce, likely due to the coast’s minimal geographical extent and the relative infrequency of direct landfalls. Research on Georgia tropical cyclones does not account for storms that make landfall in Florida and continue north, northeast, or northwest. In 2018, Hurricane Michael generated $4.7 billion in property, agriculture, and forestry damages across southwest Georgia as a Category 3 hurricane. With an increasing population, property development, and agriculture sector sensitive to tropical …


Effects Of Music Instruction For 3-4-Year-Old Children On Cognitive Development And Spatial Skills, Veronica Perez Espinosa Apr 2024

Effects Of Music Instruction For 3-4-Year-Old Children On Cognitive Development And Spatial Skills, Veronica Perez Espinosa

LSU Master's Theses

The impact of music instruction on child cognitive development has been examined by researchers in many contexts, but not as often in very young children. The purpose of the present study was to investigate the effects of music instruction on the spatial and cognitive skills of preschool children ages 3-4. Participants in the study were 68 three- to four-year-old students who received weekly music instruction at a private school in South Louisiana. Of the 68 participants, and using a quasi-experimental design, 30 students in three intact classes were randomly assigned to receive a movement song treatment and the other 38 …


Automated Reinforcement During Large-Scale Additive Manufacturing: Structural Assessment Of A Dual Approach, Hassan Ahmed, Ilerioluwa Giwa, Daniel Game, Gabriel Arce, Hassan Noorvand, Marwa Hassan, Ali Kazemian Apr 2024

Automated Reinforcement During Large-Scale Additive Manufacturing: Structural Assessment Of A Dual Approach, Hassan Ahmed, Ilerioluwa Giwa, Daniel Game, Gabriel Arce, Hassan Noorvand, Marwa Hassan, Ali Kazemian

Faculty Publications

Automated and seamless integration of reinforcement is one of the main unresolved challenges in large-scale additive construction. This study leverages a dual-reinforcement solution consisting of high-dosage steel fiber (up to 2.5% by volume) and short vertical reinforcements as a complementary reinforcement technique for 3D-printed elements. The mechanical performance of the printing material was characterized by measuring the compressive, flexural, and uniaxial tensile strengths of mold-cast specimens. Furthermore, the flexural performance of the plain and fiber-reinforced 3D-printed beams was evaluated in the three main loading directions (X, Y, and Z-directions in-plane). In addition, short vertical threaded reinforcements were inserted into the …


Generative Artificial Intelligence And Building Design: Early Photorealistic Render Visualization Of Façades Using Local Identity-Trained Models, Hayoung Jo, Jin Kook Lee, Yong Cheol Lee, Seungyeon Choo Apr 2024

Generative Artificial Intelligence And Building Design: Early Photorealistic Render Visualization Of Façades Using Local Identity-Trained Models, Hayoung Jo, Jin Kook Lee, Yong Cheol Lee, Seungyeon Choo

Faculty Publications

This paper elucidates an approach that utilizes generative artificial intelligence (AI) to develop alternative architectural design options based on local identity. The advancement of AI technologies has increasingly piqued the interest of the architecture, engineering, construction, and facility management industry. Notably, the topic of "visualization"has gained prominence as a means for enhancing communication related to a project, especially in the early phases of design. This study aims to enhance the ease of obtaining design images during initial phases of design by drawing from multiple texts and images. It develops an additional training model to generate various design alternatives that resonate …


Ceratocystis Fimbriata Alters Root System Architecture And Causes Symptom Development Only In Detached Storage Roots In Bayou Belle And Beauregard Sweet Potato, Arthur Q. Villordon, Catherine D. Derobertis, Christopher A. Clark Apr 2024

Ceratocystis Fimbriata Alters Root System Architecture And Causes Symptom Development Only In Detached Storage Roots In Bayou Belle And Beauregard Sweet Potato, Arthur Q. Villordon, Catherine D. Derobertis, Christopher A. Clark

Faculty Publications

Little is known about how the sweet potato (Ipomoea batatas) root system responds to Ceratocystis fimbriata in the growth substrate. Understanding whether the fungus affects the root system before harvest of storage roots (SR) could guide timing of management efforts. Cuttings of cultivars Bayou Belle and Beauregard, both previously considered susceptible to black rot, were in unamended or infested sand. At the onset of SR formation, effects on first- and second-order lateral root (LR) length and number among and within treatments, cultivars and replicate experiments were recorded. First-order LR length in inoculated Bayou Belle plants was 31% greater than in …


Spring 2024 Catalog, Lsu Press Apr 2024

Spring 2024 Catalog, Lsu Press

LSU Press Seasonal Catalogs

No abstract provided.


Insecticide Susceptibilities And Enzyme Activities Of Four Stink Bug Populations In Mississippi, Usa, Yuzhe Du, Shane Scheibener, Yu Cheng Zhu, K. Clint Allen, Gadi V.P. Reddy Apr 2024

Insecticide Susceptibilities And Enzyme Activities Of Four Stink Bug Populations In Mississippi, Usa, Yuzhe Du, Shane Scheibener, Yu Cheng Zhu, K. Clint Allen, Gadi V.P. Reddy

Faculty Publications

In Mississippi, the Pentatomidae complex infesting soybean is primarily composed of Euschistus servus, Nezara viridula, Chinavia hilaris, and Piezodorus guildinii. This study employed spray bioassays to evaluate the susceptibilities of these stink bugs to seven commonly used formulated insecticides: oxamyl, acephate, bifenthrin, λ-cyhalothrin, imidacloprid, thiamethoxam, and sulfoxaflor. Stinks bugs were collected from soybeans in Leland, MS, USA during 2022 and 2023, as well as from wild host plants in Clarksdale, MS. There was no significant difference in the susceptibility of C. hilaris to seven insecticides between two years, whereas P. guildinii showed slightly increased susceptibility to neonicotinoids in 2023. Among …


Field Evaluation Of Experimental Maize Hybrids For Resistance To The Fall Armyworm (Lepidoptera: Noctuidae) In A Warm Temperate Climate, Xinzhi Ni, Alisa Huffaker, Eric A. Schmelz, Wenwei Xu, W. Paul Williams, Baozhu Guo, Xianchun Li, Fangneng Huang Apr 2024

Field Evaluation Of Experimental Maize Hybrids For Resistance To The Fall Armyworm (Lepidoptera: Noctuidae) In A Warm Temperate Climate, Xinzhi Ni, Alisa Huffaker, Eric A. Schmelz, Wenwei Xu, W. Paul Williams, Baozhu Guo, Xianchun Li, Fangneng Huang

Faculty Publications

The polyphagous fall armyworm (FAW), Spodoptera frugiperda, has become an invasive pest worldwide in recent years. To develop maize germplasm with multiple pest resistance and understand genetic inheritance, 12 experimental hybrids (six pairs of reciprocal crosses) with diverse genetic backgrounds and four commercial checks were examined for FAW resistance in 2013 and 2014. The experiment utilized a randomized complete block design with four replications as the block factor. FAW injury on maize plants was assessed at 7 and 14 d after the artificial infestation at the V6 stage, and predatory arthropod taxa and abundance on maize seedlings were recorded 7 …


Illumina 16s Rrna Gene Sequencing Dataset Of Bacterial Communities Of Soil Associated With Ironwood Trees (Casuarina Equisetifolia) In Guam, Tao Jin, Robert L. Schlub, Claudia Husseneder Apr 2024

Illumina 16s Rrna Gene Sequencing Dataset Of Bacterial Communities Of Soil Associated With Ironwood Trees (Casuarina Equisetifolia) In Guam, Tao Jin, Robert L. Schlub, Claudia Husseneder

Faculty Publications

Ironwood trees, which are of great importance for the economy and environment of tropical areas, were first discovered to suffer from a slow progressive dieback in Guam in 2002, later referred to as ironwood tree decline (IWTD). A variety of biotic factors have been shown to be associated with IWTD, including putative bacterial pathogens Ralstonia solanacearum and Klebsiella species (K. variicola and K. oxytoca), the fungus Ganoderma australe, and termites. Due to the soilborne nature of these pathogens, soil microbiomes have been suggested to be a significant factor influencing tree health. In this project, we sequenced the microbiome in the …


Relational Turbulence And Couples’ Convergence And Divergence In Weekly Highs And Lows During Three Months Of The Covid-19 Pandemic Lockdown, Shaochun Li, Denise Haunani Solomon, Kellie St Cyr Brisini Apr 2024

Relational Turbulence And Couples’ Convergence And Divergence In Weekly Highs And Lows During Three Months Of The Covid-19 Pandemic Lockdown, Shaochun Li, Denise Haunani Solomon, Kellie St Cyr Brisini

Faculty Publications

Previous research has found relational benefits of interpersonal emotional convergence. Drawing on relational turbulence theory, we expected that partners’ convergence in emotional high and low points is associated with relational uncertainty, qualities of interdependence, and relational turbulence. These hypotheses were tested using data retrieved from a longitudinal project in which spouses in 64 American married couples independently reported high and low experiences and completed relationship measures every week for ten weeks from June to August of 2020. Results from multilevel models confirmed some of the hypothesized benefits of convergence in highs, but predictions about convergence in lows were largely unsupported. …


Louisiana Agriculture Magazine, Spring 2024, Lsu Agcenter Apr 2024

Louisiana Agriculture Magazine, Spring 2024, Lsu Agcenter

Louisiana Agriculture

Louisiana’s warm, subtropical climate allows producers to raise an array of crops and livestock. It also provides challenges. Tropical storm winds can lay down rice and cane crops. Ample rain can turn into crop-damaging floods. Last year, a drought struck the southeastern United States, leading to more than $100 million in losses for the cattle sector.

In these cases, LSU AgCenter specialists respond to individual producers’ needs. In each parish AgCenter Extension agents help connect producers with needed resources and become a conduit for the latest knowledge gleaned from scientists at AgCenter research stations across the state.

This issue of …


Callous–Unemotional Traits And Emotion Perception Accuracy And Bias In Youths, Enrica Ciucci, Andrea Baroncelli, Carolina Facci, Stefania Righi, Paul J. Frick Apr 2024

Callous–Unemotional Traits And Emotion Perception Accuracy And Bias In Youths, Enrica Ciucci, Andrea Baroncelli, Carolina Facci, Stefania Righi, Paul J. Frick

Faculty Publications

This study investigated the associations among conduct problems, callous–unemotional (CU) traits, and indices of emotion recognition accuracy and emotion recognition bias obtained from human faces. Impairments in emotion recognition were considered within broader, impaired emotional and social functioning. The sample consisted of 293 middle-school students (51.19% girls; M age = 12.97 years, SD = 0.88 years). In general, CU traits were associated with less accuracy in recognizing emotions, especially fearful and angry faces, and such deficits in emotional recognition were not associated with conduct problems independent of CU traits. These results support the importance of studying potential deficits in the …


Channel Expansion In The Ligand-Binding Domain Of The Glucocorticoid Receptor Contributes To The Activity Of Highly Potent Glucocorticoid Analogues, Wesley B. Seaton, Susan J. Burke, Alexander R. Fisch, William A. Schilletter, Mary Grace A. Beck, Gabrielle A. Cassagne, Innocence Harvey, Molly S. Fontenot, J. Jason Collier, Shawn R. Campagna Apr 2024

Channel Expansion In The Ligand-Binding Domain Of The Glucocorticoid Receptor Contributes To The Activity Of Highly Potent Glucocorticoid Analogues, Wesley B. Seaton, Susan J. Burke, Alexander R. Fisch, William A. Schilletter, Mary Grace A. Beck, Gabrielle A. Cassagne, Innocence Harvey, Molly S. Fontenot, J. Jason Collier, Shawn R. Campagna

Division of Basic Science Faculty Publications

Glucocorticoids (GCs) act through the glucocorticoid receptor (GR) and are commonly used as anti-inflammatory and immunosuppressant medications. Chronic GC use has been linked with unwanted complications such as steroid-induced diabetes mellitus (SIDM), although the mechanisms for these effects are not completely understood. Modification of six GC parent molecules with 2-mercaptobenzothiazole resulted in consistently less promoter activity in transcriptional activation assays using a 3xGRE reporter construct while constantly reducing inflammatory pathway activity. The most selective candidate, DX1, demonstrated a significant reduction (87%) in transactivation compared to commercially available dexamethasone. DX1 also maintained 90% of the anti-inflammatory potential of dexamethasone while simultaneously …


Functional And Multi-Omics Effects Of An Optimized Crispr-Mediated Furin Depletion In U937 Monocytes, Ruiming Chua, Lijin Wang, Roshni Singaraja, Sujoy Ghosh Apr 2024

Functional And Multi-Omics Effects Of An Optimized Crispr-Mediated Furin Depletion In U937 Monocytes, Ruiming Chua, Lijin Wang, Roshni Singaraja, Sujoy Ghosh

Division of Basic Science Faculty Publications

The pro-protein convertase FURIN (PCSK3) is implicated in a wide range of normal and pathological biological processes such as infectious diseases, cancer and cardiovascular diseases. Previously, we performed a systemic inhibition of FURIN in a mouse model of atherosclerosis and demonstrated significant plaque reduction and alterations in macrophage function. To understand the cellular mechanisms affected by FURIN inhibition in myeloid cells, we optimized a CRISPR-mediated gene deletion protocol for successfully deriving hemizygous (HZ) and nullizygous (NZ) FURIN knockout clones in U937 monocytic cells using lipotransfection-based procedures and a dual guide RNA delivery strategy. We observed differences in monocyte and macrophage …


Pregnane X Receptor Knockout Mitigates Weight Gain And Hepatic Metabolic Dysregulation In Female C57bl/6 J Mice On A Long-Term High-Fat Diet, Lidya H. Gebreyesus, Sora Choi, Prince Neequaye, Mattia Mahmoud, Mia Mahmoud, Malvin Ofosu-Boateng, Elizabeth Twum, Daniel O. Nnamani, Lijin Wang, Nour Yadak, Sujoy Ghosh, Frank J. Gonzalez, Maxwell A. Gyamfi Apr 2024

Pregnane X Receptor Knockout Mitigates Weight Gain And Hepatic Metabolic Dysregulation In Female C57bl/6 J Mice On A Long-Term High-Fat Diet, Lidya H. Gebreyesus, Sora Choi, Prince Neequaye, Mattia Mahmoud, Mia Mahmoud, Malvin Ofosu-Boateng, Elizabeth Twum, Daniel O. Nnamani, Lijin Wang, Nour Yadak, Sujoy Ghosh, Frank J. Gonzalez, Maxwell A. Gyamfi

Division of Basic Science Faculty Publications

Obesity is a significant risk factor for several chronic diseases. However, pre-menopausal females are protected against high-fat diet (HFD)-induced obesity and its adverse effects. The pregnane X receptor (PXR, NR1I2), a xenobiotic-sensing nuclear receptor, promotes short-term obesity-associated liver disease only in male mice but not in females. Therefore, the current study investigated the metabolic and pathophysiological effects of a long-term 52-week HFD in female wild-type (WT) and PXR-KO mice and characterized the PXR-dependent molecular pathways involved. After 52 weeks of HFD ingestion, the body and liver weights and several markers of hepatotoxicity were significantly higher in WT mice than in …


Preferential Hydrologic States And Tipping Characteristics Of Global Surface Soil Moisture, Vinit Sehgal, Binayak P. Mohanty Apr 2024

Preferential Hydrologic States And Tipping Characteristics Of Global Surface Soil Moisture, Vinit Sehgal, Binayak P. Mohanty

Faculty Publications

A dynamic transition in soil hydrologic states through meteorological variability and terrestrial feedback governs soil-vegetation-climate (SVC) interactions, constrained by critical soil moisture (SM) thresholds. However, observational and scaling constraints limit critical SM threshold estimation at the remote-sensing (RS) footprint scale. Using global surface SM (θRS) from NASA’s Soil Moisture Active Passive (SMAP) satellite, we characterize the seasonal preferential hydrologic states of θRS and derive three tipping characteristics to estimate the intensity (Mean Tipping Depth, (Formula presented.)), frequency (Tipping Count, η), and duration (Mean Tipped Time, (Formula presented.)) of the excursion of θRS from wet- to dry-average conditions. The preferential state …


Tai Chi Counteracts Age-Related Somatosensation And Postural Control Declines Among Older Adults, Teng Zhang, Li Li, Jan M. Hondzinski, Min Mao, Wei Sun, Qipeng Song Apr 2024

Tai Chi Counteracts Age-Related Somatosensation And Postural Control Declines Among Older Adults, Teng Zhang, Li Li, Jan M. Hondzinski, Min Mao, Wei Sun, Qipeng Song

Faculty Publications

Objective: To investigate the effect of a 16-week Tai Chi practice on strength, tactile sensation, kinesthesia, and static postural control among older adults of different age groups. Methods: This is a quasi-experimental study. Thirteen participants aged 60–69 years (60–69yr), 11 aged 70–79 years (70–79yr), and 13 aged 80–89 years (80–89yr) completed 16 weeks of 24-form Tai Chi practice. Their ankle and hip peak torque, tactile sensation, ankle and knee kinesthesia, and the root mean square of the center of pressure (Cop-RMS) were measured before (week 0) and after (week 17) practice. Results: 80–89yr showed less ankle plantar/dorsiflexion and hip abduction …


Human Milk Components And The Infant Gut Microbiome At 6 Months: Understanding The Interconnected Relationship, Maryam Kebbe, Kartik Shankar, Leanne M. Redman, Aline Andres Apr 2024

Human Milk Components And The Infant Gut Microbiome At 6 Months: Understanding The Interconnected Relationship, Maryam Kebbe, Kartik Shankar, Leanne M. Redman, Aline Andres

Clinical Research Faculty Publications

Background: Human milk oligosaccharides have been shown to relate to the infant gut microbiome. However, the impact of other human milk components on infant gut bacterial colonization remains unexplored. Objectives: Our cross-sectional analysis aimed to investigate associations between human milk components (energy, macronutrients, free amino acids, inflammatory markers, and hormones) and infant gut microbiome diversity and composition (phylum, family, and genus) at 6 mo of age. Methods: Human milk and infant stool samples were collected at 6 mo postpartum. The infant gut microbiome was profiled using 16S rRNA sequencing. Linear regression models were performed to examine associations, adjusting for pregravid …


Prevalence And Predictors Of Female Sexual Dysfunction Among Sexually Active Women In The Diabetes Prevention Program Outcomes Study, Priyanka Gupta, Lindsay Doherty, Marinella Temprosa, Rodica Pop-Busui, Kishore M. Gadde, Prachi Singh, Arthur H. Owora, Hunter Wessells, Aruna V. Sarma Apr 2024

Prevalence And Predictors Of Female Sexual Dysfunction Among Sexually Active Women In The Diabetes Prevention Program Outcomes Study, Priyanka Gupta, Lindsay Doherty, Marinella Temprosa, Rodica Pop-Busui, Kishore M. Gadde, Prachi Singh, Arthur H. Owora, Hunter Wessells, Aruna V. Sarma

Clinical Research Faculty Publications

Objective: To determine the burden and identify correlates of female sexual dysfunction (FSD) among women with prediabetes (PreD) and type 2 diabetes (T2D) enrolled in the Diabetes Prevention Program (DPP) Outcomes Study (DPPOS). Methods: The DPPOS visit included the Female Sexual Function Index (FSFI) to determine sexual function. Of 1464 participants, 1320 (90%) completed the (FSFI) and 426 were sexually active. A backward selection multivariable logistic regression model estimated the odds of FSD for sociodemographic, clinical, and diabetes-related covariates. Results: One hundred and eighty-five (43%) had a score of ≤26.55 and met the criteria for FSD. After adjustment for DPP …


Embryonic Exposure To Benzotriazole Ultraviolet Stabilizer 327 Alters Behavior Of Rainbow Trout Alevin, Andreas N.M. Eriksson, Justin Dubiel, Lauren Zink, Zhe Lu, Jon A. Doering, Steve Wiseman Apr 2024

Embryonic Exposure To Benzotriazole Ultraviolet Stabilizer 327 Alters Behavior Of Rainbow Trout Alevin, Andreas N.M. Eriksson, Justin Dubiel, Lauren Zink, Zhe Lu, Jon A. Doering, Steve Wiseman

Faculty Publications

Benzotriazole ultraviolet (UV) stabilizers (BUVSs) are used in great quantities during industrial production of a variety of consumer and industrial goods. As a result of leaching and spill, BUVSs are detectable ubiquitously in the environment. As of May 2023, citing concerns related to bioaccumulation, biomagnification, and environmental persistence, (B)UV(S)-328 was recommended to be listed under Annex A of the Stockholm Convention on Persistent Organic Pollutants. However, a phaseout of UV-328 could result in a regrettable substitution because the replacement chemical(s) could cause similar or unpredicted toxicity in vivo, relative to UV-328. Therefore, the influence of UV-327, a potential replacement of …


Evaluation Of Organic And Synthetic Herbicide Applications On Weed Suppression In A Conventional Cropping System In Louisiana, Caitlin Denux, Aixin Hou, Lisa Fultz Apr 2024

Evaluation Of Organic And Synthetic Herbicide Applications On Weed Suppression In A Conventional Cropping System In Louisiana, Caitlin Denux, Aixin Hou, Lisa Fultz

Faculty Publications

Synthetic herbicides, with their varying modes of action, are well known for their efficiency in the suppression and control of weed species in U.S. agriculture. However, the consequences of using synthetic herbicides without attention to the surrounding environment produce chemical run-off, changes in soil health and soil health conditions, and create herbicide-resistant weeds. These outcomes have encouraged growers to seek alternative methods for their weed management programs or farming operations. Organic production systems and organic pesticides have helped address these challenges related to sustainability and environmental health. However, the use of organic herbicides in a conventional cropping system is not …


Stimulation Of Small Phytoplankton Drives Enhanced Sinking Particle Formation In A Subtropical Ocean Eddy, Haoran Liu, Thomas J. Browning, Edward A. Laws, Yibin Huang, Lei Wang, Yiwei Shang, Xiaogang Xing, Kuanbo Zhou, Zong Pei Jiang, Xin Liu, Bangqin Huang, Minhan Dai Apr 2024

Stimulation Of Small Phytoplankton Drives Enhanced Sinking Particle Formation In A Subtropical Ocean Eddy, Haoran Liu, Thomas J. Browning, Edward A. Laws, Yibin Huang, Lei Wang, Yiwei Shang, Xiaogang Xing, Kuanbo Zhou, Zong Pei Jiang, Xin Liu, Bangqin Huang, Minhan Dai

Faculty Publications

Nutrient transfer into the sunlit surface ocean by cyclonic eddies is potentially crucial for sustaining primary productivity in the stratified subtropical gyres. However, the nature of productivity enhancements, including the flow of matter to higher trophic levels and its impact on carbon fluxes, remain poorly resolved. Here, we report a detailed assessment of the biogeochemical response to a cyclonic eddy in the subtropical Northwest Pacific via a combination of ship-based and autonomous platforms. Primary production was enhanced twofold within the eddy core relative to reference sites outside, whereas phytoplankton biomass even decreased. Pico-phytoplankton (< 2 μm) dominated (> 80%) both phytoplankton biomass and primary …


A Joint Fermi-Gbm And Swift-Bat Analysis Of Gravitational-Wave Candidates From The Third Gravitational-Wave Observing Run, C. Fletcher, J. Wood, R. Hamburg, P. Veres, C. M. Hui, E. Bissaldi, M. S. Briggs, E. Burns, W. H. Cleveland, M. M. Giles, A. Goldstein, B. A. Hristov, D. Kocevski, S. Lesage, B. Mailyan, C. Malacaria, S. Poolakkil, A. Von Kienlin, C. A. Wilson-Hodge, M. Crnogorčević, J. Delaunay, A. Tohuvavohu, R. Caputo, S. B. Cenko, S. Laha, T. Parsotan, R. Abbott, H. Abe, F. Acernese, K. Ackley, N. Adhikari, R. X. Adhikari, V. K. Adkins Apr 2024

A Joint Fermi-Gbm And Swift-Bat Analysis Of Gravitational-Wave Candidates From The Third Gravitational-Wave Observing Run, C. Fletcher, J. Wood, R. Hamburg, P. Veres, C. M. Hui, E. Bissaldi, M. S. Briggs, E. Burns, W. H. Cleveland, M. M. Giles, A. Goldstein, B. A. Hristov, D. Kocevski, S. Lesage, B. Mailyan, C. Malacaria, S. Poolakkil, A. Von Kienlin, C. A. Wilson-Hodge, M. Crnogorčević, J. Delaunay, A. Tohuvavohu, R. Caputo, S. B. Cenko, S. Laha, T. Parsotan, R. Abbott, H. Abe, F. Acernese, K. Ackley, N. Adhikari, R. X. Adhikari, V. K. Adkins

Faculty Publications

We present Fermi Gamma-ray Burst Monitor (Fermi-GBM) and Swift Burst Alert Telescope (Swift-BAT) searches for gamma-ray/X-ray counterparts to gravitational-wave (GW) candidate events identified during the third observing run of the Advanced LIGO and Advanced Virgo detectors. Using Fermi-GBM onboard triggers and subthreshold gamma-ray burst (GRB) candidates found in the Fermi-GBM ground analyses, the Targeted Search and the Untargeted Search, we investigate whether there are any coincident GRBs associated with the GWs. We also search the Swift-BAT rate data around the GW times to determine whether a GRB counterpart is present. No counterparts are found. Using both the Fermi-GBM Targeted Search …


Homology Growth, Hyperbolization, And Fibering, Grigori Avramidi, Boris Okun, Kevin Schreve Apr 2024

Homology Growth, Hyperbolization, And Fibering, Grigori Avramidi, Boris Okun, Kevin Schreve

Faculty Publications

We introduce a hyperbolic reflection group trick which builds closed aspherical manifolds out of compact ones and preserves hyperbolicity, residual finiteness, and—for almost all primes p—-homology growth above the middle dimension. We use this trick, embedding theory and manifold topology to construct Gromov hyperbolic 7-manifolds that do not virtually fiber over a circle out of graph products of large finite groups.


Ixpe Observation Confirms A High Spin In The Accreting Black Hole 4u 1957+115, L. Marra, M. Brigitte, N. Rodriguez Cavero, S. Chun, J. F. Steiner, M. Dovčiak, M. Nowak, S. Bianchi, F. Capitanio, A. Ingram, G. Matt, F. Muleri, J. Podgorný, J. Poutanen, J. Svoboda, R. Taverna, F. Ursini, A. Veledina, A. De Rosa, J. A. García, A. A. Lutovinov, I. A. Mereminskiy, R. Farinelli, S. Gunji, P. Kaaret, T. Kallman, H. Krawczynski, Y. Kan, K. Hu, A. Marinucci, G. Mastroserio, R. Mikus̆Incová, M. Parra Apr 2024

Ixpe Observation Confirms A High Spin In The Accreting Black Hole 4u 1957+115, L. Marra, M. Brigitte, N. Rodriguez Cavero, S. Chun, J. F. Steiner, M. Dovčiak, M. Nowak, S. Bianchi, F. Capitanio, A. Ingram, G. Matt, F. Muleri, J. Podgorný, J. Poutanen, J. Svoboda, R. Taverna, F. Ursini, A. Veledina, A. De Rosa, J. A. García, A. A. Lutovinov, I. A. Mereminskiy, R. Farinelli, S. Gunji, P. Kaaret, T. Kallman, H. Krawczynski, Y. Kan, K. Hu, A. Marinucci, G. Mastroserio, R. Mikus̆Incová, M. Parra

Faculty Publications

We present the results of the first X-ray polarimetric observation of the low-mass X-ray binary 4U 1957+115, performed with the Imaging X-ray Polarimetry Explorer in May 2023. The binary system has been in a high-soft spectral state since its discovery and is thought to host a black hole. The ∼571 ks observation reveals a linear polarisation degree of 1.9% ± 0.6% and a polarisation angle of −41◦. 8 ± 7◦. 9 in the 2–8 keV energy range. Spectral modelling is consistent with the dominant contribution coming from the standard accretion disc, while polarimetric data suggest a significant role …


Magnetic Properties Of B Doped Mn-Ga-C Based Alloys, I. Dubenko, A. Oli, J. Duncan, A. Granovsky, R. Razhabov, M. Hill, Yu Koshkid'ko, S. Stadler, S. Talapatra, N. Ali Apr 2024

Magnetic Properties Of B Doped Mn-Ga-C Based Alloys, I. Dubenko, A. Oli, J. Duncan, A. Granovsky, R. Razhabov, M. Hill, Yu Koshkid'ko, S. Stadler, S. Talapatra, N. Ali

Faculty Publications

We present results on the structural and magnetic properties of the B-doped Mn60Ga20C20-xBx system with x = 0, 1, 2, 3, 4 and 5. A ball milling technique followed by pressing the components, and annealing under an ultra-high purity argon atmosphere for 2 h was employed to fabricate the samples. According to the XRD diffraction data, all samples can be described as single-phase compounds (i.e., the Mn3Ga cubic phase in the Pm–3 m space group) where impurity phases did not exceed 5 %. The compounds with x < 5 show similar physical behaviors as the parent, Mn3Ga2C2, which can be generally characterized by a low temperature transition from low to high magnetization states. High boron concentrations were found to completely suppress the antiferromagnetic state. The (x-TC) phase diagram at 10 K has been constructed and discussed. The magnetocaloric measurements result in magnetic entropy changes of 3.0 Jkg-1k−1 at 5 T and ΔTad by direct measurement of about …


Validation Of Remote Child Weight And Height Measurements Within A Weight Management Trial, Alyssa M. Button, Amanda E. Staiano, Robbie A. Beyl, Richard I. Stein, Robert L. Newton, Alison Baker, Angela Lima, Jeanne Lindros, Anne Marie Conn, R. Robinson Welch, Stephen R. Cook, Denise E. Wilfley Apr 2024

Validation Of Remote Child Weight And Height Measurements Within A Weight Management Trial, Alyssa M. Button, Amanda E. Staiano, Robbie A. Beyl, Richard I. Stein, Robert L. Newton, Alison Baker, Angela Lima, Jeanne Lindros, Anne Marie Conn, R. Robinson Welch, Stephen R. Cook, Denise E. Wilfley

Population and Public Health Science Faculty Publications

Objective: The aim of this substudy within the Treatment Efforts Addressing Child Weight Management by Unifying Patients, Parents, and Providers (TEAM UP) pragmatic clinical trial was to compare the validity of anthropometric measurements collected remotely versus in person (≤7 days apart) among youth with obesity who were 6 to 15 years of age. Methods: Child (n = 37) weight and height were measured in person by a trained data assessor. These were compared with measurements taken remotely by the child's parent with live videoconferencing observation by a study data assessor. In-person and remote measurements were compared using Bland–Altman plots, Pearson …