Entire DC Network | Open Access Articles | Digital Commons Network™

Publisher Correction: A D2 To D1 Shift In Dopaminergic Inputs To Midbrain 5-Ht Neurons Causes Anorexia In Mice (Nature Neuroscience, (2022), 25, 5, (646-658), 10.1038/S41593-022-01062-0), Xing Cai, Hailan Liu, Bing Feng, Meng Yu, Yang He, Hesong Liu, Chen Liang, Yongjie Yang, Longlong Tu, Nan Zhang, Lina Wang, Na Yin, Junying Han, Zili Yan, Chunmei Wang, Pingwen Xu, Qi Wu, Qingchun Tong, Yanlin He, Yong Xu

Division of Basic Science Faculty Publications

In the version of this article initially published, the bar graph shown in Fig. 6d was a duplicate of Fig. 6c. The figure panel has been corrected in the HTML and PDF versions of the article.

Go to article

Special Issue: Emerging Paradigms In Insulin Resistance, J. Jason Collier, Susan J. Burke

Division of Basic Science Faculty Publications

No abstract provided.

Go to article

Licogliflozin For Nonalcoholic Steatohepatitis: A Randomized, Double-Blind, Placebo-Controlled, Phase 2a Study, Stephen A. Harrison, Federico Perez Manghi, William B. Smith, Diana Alpenidze, Diego Aizenberg, Naomi Klarenbeek, Chi Yi Chen, Eli Zuckerman, Eric Ravussin, Phunchai Charatcharoenwitthaya, Pin Nan Cheng, Helena Katchman, Samuel Klein, Ziv Ben-Ari, Anisha E. Mendonza, Yiming Zhang, Miljen Martic, Shenglin Ma, Sheena Kao, Sandra Tanner, Alok Pachori, Michael K. Badman, Yan Ling He, Chinweike Ukomadu, Eric Sicard

Clinical Research Faculty Publications

Nonalcoholic steatohepatitis (NASH) is a common chronic liver disease that may advance to fibrosis and lead to mortality; however, no pharmacotherapy is currently available. We tested the hypothesis that inhibition of both the sodium–glucose cotransporters 1 and 2 with licogliflozin would lead to improvement in NASH. A total of 107 patients with phenotypic or histologic NASH were randomized (1:2:2) to receive oral administration of either placebo (n = 21), licogliflozin 30 mg (n = 43) or 150 mg (n = 43) once daily for 12 weeks. Licogliflozin 150 mg showed a significant 32% (80% confidence interval (CI): 21–43%; P = …

Go to article

Polyunsaturated Fatty Acid Intake And Brain Health: Balance Is The Key, Candida J. Rebello

Clinical Research Faculty Publications

No abstract provided.

Go to article

From Soils To Streams: Connecting Terrestrial Carbon Transformation, Chemical Weathering, And Solute Export Across Hydrological Regimes, Hang Wen, Pamela L. Sullivan, Sharon A. Billings, Hoori Ajami, Alejandro Cueva, Alejandro Flores, Daniel R. Hirmas, Aaron N. Koop, Katie Murenbeeld, Xi Zhang, Li Li

Faculty Publications

Soil biota generates carbon that exports vertically to the atmosphere (CO2) and transports laterally to streams and rivers (dissolved organic and inorganic carbon, DOC and DIC). These processes, together with chemical weathering, vary with flow paths across hydrological regimes; yet an integrated understanding of these interactive processes is still lacking. Here we ask: How and to what extent do subsurface carbon transformation, chemical weathering, and solute export differ across hydrological and subsurface structure regimes? We address this question using a hillslope reactive transport model calibrated using soil CO2 and water chemistry data from Fitch, a temperate forest at the ecotone …

Go to article

The Covid-19 Pandemic And Associated Increases In Experiences Of Assault Violence Among Black Men With Low Socioeconomic Status Living In Louisiana, Kaylin Beiter, Denise Danos, Erich Conrad, Stephanie Broyles, Jovanny Zabaleta, Jason Mussell, Stephen Phillippi

Population and Public Health Science Faculty Publications

Background: The COVID-19 pandemic has had mental health, social, and economic implications among communities with high levels of social disadvantage; this may have impacted community violence rates. The objective of this study was to characterize overall trends in assault and social disadvantage of patients experiencing assault before and during the COVID-19 pandemic. Methods: All trauma activations at a level one trauma center serving the entire southeast Louisiana region were included during March–August pre-COVID (2018–2019) and during COVID (2020). ICD-10 E-codes were used to identify trauma intent (assault vs. other). Assaults in this context are defined as physical injuries caused by …

Go to article

Ptsd Treatment Reduces Risk Of Trauma Recidivism In A Diverse Community At A Safety-Net Hospital: A Propensity Score Analysis Of Data From A Level One Trauma Center, Kaylin Beiter, Denise Danos, Erich Conrad, Stephanie Broyles, Jovanny Zabaleta, Jason Mussell, Stephen Phillippi

Population and Public Health Science Faculty Publications

Background: Physically-traumatic injuries result in PTSD for approximately 10% of Americans, and this rate is higher among individuals of color and those living in poverty. Individuals of color living in poverty experience lower access to PTSD and other mental health services. Untreated PTSD is associated with increased risk of trauma recidivism, but it is unknown if provision of treatment is actually associated with a subsequent reduction in recidivism risk. Methods: For this observational cross-sectional study, data were collected retrospectively from the Trauma Registry of a level one trauma center, safety-net hospital in New Orleans between 2018 and 2020. Receipt of …

Go to article

Erratum: The Perfect Storm? Covid-19 And Substance Use Amongst Social Work Students In The Usa (The British Journal Of Social Work (2021) Doi: 10.1093/Bjsw/Bcab192), Youn Kyoung Kim, Sung Seek Moon, Mansoo Yu, Mee Young Um, Arati Maleku, Omoshola Kehinde, David Pooler

Faculty Publications

In the originally published manuscript, the affiliation for co-author Dr Arati Maleku contained an error. This should read: College of Social Work instead of College only. This error is now corrected in the article online.

Go to article

The Perfect Storm? Covid-19 And Substance Use Amongst Social Work Students In The Usa, Youn Kyoung Kim, Sung Seek Moon, Mansoo Yu, Mee Young Um, Arati Maleku, Omoshola Kehinde, David Pooler

Faculty Publications

During the COVID-19 pandemic, health risk behaviours related to substance use have been recognised as a significant public health concern amongst university students. Understanding the mechanisms of substance use behaviours, including those used to cope with COVID-19-related stressors, is imperative to curate targeted prevention efforts. To that end, we examined substance use prevalence and its associations with socio-demographic characteristics, preventive behaviours, and mental health amongst US social work students. We collected data from 457 students across all degree levels (BSW, MSW and PhD) from July to August 2020 through an online survey, to examine thirty-day patterns of substance use behaviours …

Go to article

Alliance Of Randomized Trials Of Medicine Vs Metabolic Surgery In Type 2 Diabetes (Armms-T2d): Study Rationale, Design, And Methods, Donald C. Simonson, Bo Hu, David E. Arterburn, Philip R. Schauer, Sangeeta R. Kashyap, Anita P. Courcoulas, David E. Cummings, Mary Elizabeth Patti, William F. Gourash, Ashley H. Vernon, John M. Jakicic, John P. Kirwan

Division of Basic Science Faculty Publications

Aims: Long-term data from randomized clinical trials comparing metabolic (bariatric) surgery versus a medical/lifestyle intervention for treatment of patients with obesity/overweight and type 2 diabetes (T2D) are lacking. The Alliance of Randomized Trials of Medicine vs Metabolic Surgery in Type 2 Diabetes (ARMMS-T2D) is a consortium of four randomized trials designed to compare long-term efficacy and safety of surgery versus medical/lifestyle therapy on diabetes control and clinical outcomes. Materials and Methods: Patients with T2D and body mass index (BMI) of 27-45 kg/m2 who were previously randomized to metabolic surgery (Roux-en-Y gastric bypass, adjustable gastric band, or sleeve gastrectomy) versus medical/lifestyle …

Go to article

Diabetes Remission In The Alliance Of Randomized Trials Of Medicine Versus Metabolic Surgery In Type 2 Diabetes (Armms-T2d), John P. Kirwan, Anita P. Courcoulas, David E. Cummings, Allison B. Goldfine, Sangeeta R. Kashyap, Donald C. Simonson, David E. Arterburn, William F. Gourash, Ashley H. Vernon, John M. Jakicic, Mary Elizabeth Patti, Kathy Wolski, Philip R. Schauer

Division of Basic Science Faculty Publications

OBJECTIVE The overall aim of the Alliance of Randomized Trials of Medicine versus Metabolic Surgery in Type 2 Diabetes (ARMMS-T2D) consortium is to assess the durability and longer-term effectiveness of metabolic surgery compared with medical/lifestyle management in patients with type 2 diabetes (NCT02328599). RESEARCH DESIGN AND METHODS A total of 316 patients with type 2 diabetes previously randomly assigned to surgery (N 5 195) or medical/lifestyle therapy (N 5 121) in the STAMPEDE, TRIABETES, SLIMM-T2D, and CROSSROADS trials were enrolled into this prospective observational cohort. The primary outcome was the rate of diabetes remission (hemoglobin A1c [HbA1c] #6.5% for 3 …

Go to article

An Il1rl1 Genetic Variant Lowers Soluble St2 Levels And The Risk Effects Of Apoe-Ε4 In Female Patients With Alzheimer’S Disease, Yuanbing Jiang, Xiaopu Zhou, Hiu Yi Wong, Li Ouyang, Fanny C.F. Ip, Vicky M.N. Chau, Shun Fat Lau, Wei Wu, Daniel Y.K. Wong, Heukjin Seo, Wing Yu Fu, Nicole C.H. Lai, Yuewen Chen, Yu Chen, Estella P.S. Tong, Michael W. Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowski, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Zaven Khachaturian, Greg Sorensen, Lew Kuller, Marcus Raichle, Steven Paul, Peter Davies, Howard Fillit

Clinical Research Faculty Publications

Changes in the levels of circulating proteins are associated with Alzheimer’s disease (AD), whereas their pathogenic roles in AD are unclear. Here, we identified soluble ST2 (sST2), a decoy receptor of interleukin-33–ST2 signaling, as a new disease-causing factor in AD. Increased circulating sST2 level is associated with more severe pathological changes in female individuals with AD. Genome-wide association analysis and CRISPR–Cas9 genome editing identified rs1921622, a genetic variant in an enhancer element of IL1RL1, which downregulates gene and protein levels of sST2. Mendelian randomization analysis using genetic variants, including rs1921622, demonstrated that decreased sST2 levels lower AD risk and related …

Go to article

Edwardsiella Ictaluri T3ss Effector Esen Modulates Expression Of Host Genes Involved In The Immune Response, Lidiya P. Dubytska, Ranjan Koirala, Azhia Sanchez, Ronald Thune

Faculty Publications

The type III secretion system (T3SS) effector EseN is encoded on the Edwardsiella ictaluri chromosome and is homologous to a family of T3SS effector proteins with phosphothreonine lyase activity. Previously we demonstrated that E. ictaluri invasion activates extracellular signal-regulated kinases 1 and 2 (ERK1/2) early in the infection, which are subsequently inactivated by EseN. Com-parative transcriptomic analysis showed a total of 753 significant differentially expressed genes in head-kidney-derived macrophages (HKDM) infected with an EseN mutant (∆EseN) compared to HKDM infected with wild-type (WT) strains. This data strongly indicates classical activation of macrophages (the M1 phenotype) in response to E. ictaluri …

Go to article

Beyond Quantum Cluster Theories: Multiscale Approaches For Strongly Correlated Systems, Herbert F. Fotso, Ka Ming Tam, Juana Moreno

Faculty Publications

The degrees of freedom that confer to strongly correlated systems their many intriguing properties also render them fairly intractable through typical perturbative treatments. For this reason, the mechanisms responsible for their technologically promising properties remain mostly elusive. Computational approaches have played a major role in efforts to fill this void. In particular, dynamical mean field theory and its cluster extension, the dynamical cluster approximation have allowed significant progress. However, despite all the insightful results of these embedding schemes, computational constraints, such as the minus sign problem in quantum Monte Carlo (QMC), and the exponential growth of the Hilbert space in …

Go to article

Charging Of Radioactive And Environmental Airborne Particles, Gyoung G. Jang, Alexander I. Wiechert, Yong Ha Kim, Austin P. Ladshaw, Tyler Spano, Joanna Mcfarlane, Kristian Myhre, Joon Jin Song, Sotira Yiacoumi, Costas Tsouris

Faculty Publications

The charging of various airborne particles was investigated using single-particle levitation and charge-balance equations. Though radioactive decay and triboelectrification can induce charging, it is typically assumed that the aerosols in a radioactive plume will not carry significant charge at steady state since atmospheric particles can have their charge neutralized through the capture of adjacent counter-ions (i.e., diffusion charging). To assess this assumption, we directly measured the surface charge and charge density of various triboelectrically charged aerosols including radioactive uranium oxide (< 1 μm), urban dust, Arizona desert dust, hydrophilic and hydrophobic silica nanoparticles, and graphene oxide powders using an electric field-assisted particle levitator in air. Of these particles, uranium oxide aerosols exhibited the highest surface charge density. Charge balance equations were employed to predict the average charge gained from radioactive decay as a function of time and to evaluate the effects of diffusion charging on triboelectrically charged radioactive and non-radioactive particles in the atmosphere. Simulation results show that particles, initially charged through triboelectrification, can be quickly discharged by diffusion charging in the absence of radioactive decay. Nevertheless, simulation results also indicate that particles can be strongly charged when they carry radionuclides. These experimental and simulation results suggest that radioactive decay can induce strong particle charging that may potentially affect atmospheric transport of airborne radionuclides.

Go to article

Low-Light Shadow Imaging Using Quadrature-Noise Detection With A Camera, Savannah L. Cuozzo, Pratik J. Barge, Nikunjkumar Prajapati, Narayan Bhusal, Hwang Lee, Lior Cohen, Irina Novikova, Eugeniy E. Mikhailov

Faculty Publications

This paper experimentally demonstrates an imaging technique based on quadrature noise modification after interaction with an opaque object. By using a homodyne-like detection scheme, the detrimental effect of the camera dark noise is eliminated, making this approach particularly attractive for imaging scenarios which require weak illumination. As an example, the image of an object illuminated with a squeezed vacuum is reconstructed using a total of 800 probing photons, utilizing less than one photon per frame on average.

Go to article

Conditional Quantum Plasmonic Sensing, Fatemeh Mostafavi, Zeinab Jafari, Michelle L.J. Lollie, Chenglong You, Israel De Leon, Omar S. Magaña-Loaiza

Faculty Publications

The possibility of using weak optical signals to perform sensing of delicate samples constitutes one of the main goals of quantum photonic sensing. Furthermore, the nanoscale confinement of electromagnetic near fields in photonic platforms through surface plasmon polaritons has motivated the development of highly sensitive quantum plasmonic sensors. Despite the enormous potential of plasmonic platforms for sensing, this class of sensors is ultimately limited by the quantum statistical fluctuations of surface plasmons. Indeed, the fluctuations of the electromagnetic field severely limit the performance of quantum plasmonic sensing platforms in which delicate samples are characterized using weak near-field signals. Furthermore, the …

Go to article

Symplectic Effective Field Theory For Nuclear Structure Studies, D. Kekejian, J. P. Draayer, V. I. Mokeev, C. D. Roberts

Faculty Publications

A symplectic effective field theory that unveils the observed emergence of symplectic symmetry in atomic nuclei is advanced. Specifically, starting from a simple extension of the harmonic-oscillator Lagrangian, an effective field theory applied against symplectic basis states is shown to yield a Hamiltonian system with one fitted parameter. The scale of the system can be determined self-consistently as the ratio of the average volume of a nucleus assumed to be spherical to its volume as determined by the average number of oscillator quanta, which is stretched by the fact that the plane-wave solution satisfies the equations of motion at every …

Go to article

An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing, Kailash C. Sahu, Kailash C. Sahu, Jay Anderson, Stefano Casertano, Howard E. Bond, Andrzej Udalski, Martin Dominik, Annalisa Calamida, Andrea Bellini, Thomas M. Brown, Marina Rejkuba, Varun Bajaj, Noé Kains, Henry C. Ferguson, Chris L. Fryer, Philip Yock, Przemek Mróz, Szymon Kozłowski, Paweł Pietrukowicz, Radek Poleski, Jan Skowron, Igor Soszyński, Michał K. Szymański, Krzysztof Ulaczyk, Łukasz Wyrzykowski, Richard K. Barry, David P. Bennett, Ian A. Bond, Yuki Hirao, Stela Ishitani Silva, Iona Kondo, Naoki Koshimoto, Clément Ranc

Faculty Publications

We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (t E ≃ 270 days), high-magnification microlensing event MOA-2011-BLG-191/OGLE-2011-BLG-0462 (hereafter designated as MOA-11-191/OGLE-11-462), in the direction of the Galactic bulge. HST imaging, conducted at eight epochs over an interval of 6 yr, reveals a clear relativistic astrometric deflection of the background star's apparent position. Ground-based photometry of MOA-11-191/OGLE-11-462 shows a parallactic signature of the effect of Earth's motion on the microlensing light curve. Combining the …

Go to article

Levels And Correlates Of Objectively Measured Sedentary Behavior In Young Children: Sunrise Study Results From 19 Countries, Katharina E. Kariippanon, Kar A.R.H.A.U. Chong, Xanne Janssen, Simone A. Tomaz, Evelyn H.C. Ribeiro, Nyaradzai Munambah, Cecilia H.S. Chan, Pw Prasad Chathurangana, Catherine E. Draper, Asmaa El Hamdouchi, Alex A. Florindo, Hongyan Guan, Amy M.Y.S. Ha, Mohammad Sorowar Hossain, Dong Hoon Kim, Thanh Van Kim, Denise C.L. Koh, Marie Löf, Bang Nguyen Pham, Bee E.E.K. Poh, John J. Reilly, Amanda E. Staiano, Adang Suherman, Chiaki Tanaka, Hong K.I.M. Tang, Mark S. Tremblay, E. Kipling Webster, V. Pujitha Wickramasinghe, Jyh Y.H.E. Wong, Anthony D. Okely

Population and Public Health Science Faculty Publications

Purpose There is a paucity of global data on sedentary behavior during early childhood. The purpose of this study was to examine how device-measured sedentary behavior in young children differed across geographically, economically, and sociodemographically diverse populations, in an international sample. Methods This multinational, cross-sectional study included data from 1071 children 3-5 yr old from 19 countries, collected between 2018 and 2020 (pre-COVID). Sedentary behavior was measured for three consecutive days using activPAL accelerometers. Sedentary time, sedentary fragmentation, and seated transport duration were calculated. Linear mixed models were used to examine the differences in sedentary behavior variables between sex, country-level …

Go to article

The Dual Nature Of The Nucleolus, Alan Tartakoff, Patrick Dimario, Eduard Hurt, Brian Mcstay, Vikram Govind Panse, David Tollervey

Faculty Publications

The nucleolus is best known for housing the highly ordered assembly line that produces ribosomal subunits. The >100 ribosome assembly factors in the nucleolus are thought to cycle between two states: an operative state (when integrated into subunit assembly intermediates) and a latent state (upon release from intermediates). Although it has become commonplace to refer to the nucleolus as “being a multilayered condensate,” and this may be accurate for latent factors, there is little reason to think that such assertions pertain to the operative state of assembly factors.

Go to article

Mitochondrial Dna And Other Lines Of Evidence Clarify Species Diversity In The Peromyscus Truei Species Group (Cricetidae: Neotominae), Giovani Hernández-Canchola, Livia León-Paniagua, Jacob A. Esselstyn

Faculty Publications

Deer mice (genus Peromyscus) are among the commonest small mammals in the Nearctic zoogeographic region. Nevertheless, systematic relationships are only partially settled and numerous taxonomic questions await resolution. For instance, researchers have found that some members of the Peromyscus truei species group contain high levels of genetic divergence that could indicate the presence of cryptic species. We analyzed the systematics and phylogenetic relationships of the P. truei group using new and previously published mitochondrial cytochrome b sequences. Our analyses verify several earlier conclusions, but we also detected new clades that deserve recognition. Considering their mitochondrial distinctiveness, allopatric ranges, and previously …

Go to article

Branched-Chain Amino Acids And Their Interactions With Lipid Metabolites For Increased Risk Of Gestational Diabetes, Ninghua Li, Jing Li, Hui Wang, Jinnan Liu, Weiqin Li, Kai Yang, Xiaoxu Huo, Junhong Leng, Zhijie Yu, Gang Hu, Zhongze Fang, Xilin Yang

Population and Public Health Science Faculty Publications

Objective: We aimed to explore associations of branched-chain amino acids (BCAA) in early pregnancy with gestational diabetes mellitus (GDM), and whether high BCAAs and lipidomics markers had interactive effects on the risk of GDM. Methods: We conducted a 1:1 case-control study (n=486) nested in a prospective cohort of pregnant women in Tianjin, China. Blood samples were collected at their first antenatal care visit (median 10 gestational weeks). Serum BCAAs, saturated fatty acids (SFA) and lysophosphatidylcholines (LPC) were measured by liquid chromatography-tandem mass spectrometry analysis. Conditional logistic regression was performed to examine associations of BCAAs with the risk of GDM. Interactions …

Go to article

Planetary-Scale Change To The Biosphere Signalled By Global Species Translocations Can Be Used To Identify The Anthropocene, Mark Williams, Reinhold Leinfelder, Anthony D. Barnosky, Martin J. Head, Francine M.G. Mccarthy, Alejandro Cearreta, Stephen Himson, Rachael Holmes, Colin N. Waters, Jan Zalasiewicz, Simon Turner, Mary Mcgann, Elizabeth A. Hadly, M. Allison Stegner, Paul Michael Pilkington, Jérôme Kaiser, Juan Carlos Berrio, Ian P. Wilkinson, Jens Zinke, Kristine L. Delong

Faculty Publications

We examine three distinctive biostratigraphic signatures of humans associated with hunting and gathering, landscape domestication and globalization. All three signatures have significant fossil records of regional importance that can be correlated inter-regionally and help describe the developing pattern of human expansion and appropriation of resources. While none have individual first or last appearances that provide a globally isochronous marker, all three signatures overlap stratigraphically, in that they are part of a continuum of change, with complex regional patterns. Here we show that during the later stages of globalization, late nineteenth to twentieth century records of species translocations can be used …

Go to article

Ignoring Spatial And Spatiotemporal Dependence In The Disturbances Can Make Black Swans Appear Grey, R. Kelley Pace, Raffaella Calabrese

Faculty Publications

Automated valuation models (AVMs) are widely used by financial institutions to estimate the property value for a residential mortgage. The distribution of pricing errors obtained from AVMs generally show fat tails (Pender 2016; Demiroglu and James Management Science, 64(4), 1747–1760 2018). The extreme events on the tails are usually known as “black swans” (Taleb 2010) in finance and their existence complicates financial risk management, assessment, and regulation. We show via theory, Monte Carlo experiments, and an empirical example that a direct relation exists between non-normality of the pricing errors and goodness-of-fit of the house pricing models. Specifically, we provide an …

Go to article

Comparison Of Ground-Based And Airborne Transient Electromagnetic Methods For Mapping Glacial And Permafrost Environments: Cases From Mcmurdo Dry Valleys, Antarctica, Line M. Madsen, Thue Bording, Denys Grombacher, Nikolaj Foged, Neil Foley, Hilary A. Dugan, Peter T. Doran, Jill Mikucki, Slawek Tulaczyk, Esben Auken

Faculty Publications

The transient electromagnetic (TEM) method is a non-invasive geophysical tool well-suited for subsurface imaging in cold and polar regions, where common targets are associated with strong contrasts in electrical resistivity. By imaging the electrical properties of the subsurface, the TEM methods can discriminate between geological units such as frozen ground (permafrost), fresh/saline groundwater systems, and bedrock/glacier ice. In this study, we compare TEM data acquired with ground-based and airborne TEM systems. We demonstrate the mapping capabilities of these two approaches in high latitude polar environments with datasets from Taylor Glacier, Lake Vanda, and Canada Glacier in the McMurdo Dry Valleys …

Go to article

Better Colloidal Lithography: Tilt-Rotate Evaporation Overcomes The Limits Of Plasma Etching, Macayla J. Caso, Michael G. Benton, Kevin M. Mcpeak

Faculty Publications

Colloidal lithography (CL) is a promising method for large-area fabrication of nanohole and nanodot arrays with applications in optical biosensing, separations, and magnetic data storage. However, reducing the diameter of the polystyrene sphere mask by plasma etching unavoidably increases their coefficient of variation (CV) and deforms their shape, thereby limiting the pitch-to-hole-diameter ratio of the resulting nanohole array to less than 3:1 and the minimum hole size to 200 nm with a 10% or better CV. We show that tilt-rotate evaporation colloidal lithography (TRE-CL) breaks the trade-off between hole diameter and polydispersity by leveraging glancing angle evaporation, not plasma etching, …

Go to article

Droplet Behavior In Overexpanded Supersonic Two-Phase Jets, Shyam Menon, Mohana Gurunadhan

Faculty Publications

The interaction of liquid droplets generated by spray atomization with high-speed co-flowing gas is of interest in various applications including fuel injection, spray cooling, and surface coating. The underlying processes involve interactions between the droplets themselves, and with the carrier gas. Additionally, they are influenced by shock and expansion waves present in high-speed flows, accompanied by resulting velocity and pressure fluctuations. Non-intrusive diagnostics including Shadowgraphy and Phase Doppler Particle Anemometry, along with flow simulations, are used to study droplet behavior, characterized by size and velocity changes, as a finely atomized spray is propelled by a carrier gas through a supersonic, …

Go to article

Predicting Elastic Constants Of Refractory Complex Concentrated Alloys Using Machine Learning Approach, Uttam Bhandari, Hamed Ghadimi, Congyan Zhang, Shizhong Yang, Shengmin Guo

Faculty Publications

Refractory complex concentrated alloys (RCCAs) have drawn increasing attention recently owing to their balanced mechanical properties, including excellent creep resistance, ductility, and oxidation resistance. The mechanical and thermal properties of RCCAs are directly linked with the elastic constants. However, it is time consuming and expensive to obtain the elastic constants of RCCAs with conventional trial-and-error experiments. The elastic constants of RCCAs are predicted using a combination of density functional theory simulation data and machine learning (ML) algorithms in this study. The elastic constants of several RCCAs are predicted using the random forest regressor, gradient boosting regressor (GBR), and XGBoost regression …

Go to article

Towards A Fully Autonomous Robotic System For Detection And Removal Of Surface Defects In Fiber Glass Panels, James Oubre, William Ard, Joshua Nguyen, Corina Barbalata

Faculty Publications

Wind blades for turbines are commonly manufactured from fiber glass. A last step in the manufacturing process of such blades is sanding of the surface to remove defects that occur during the process. This paper presents an autonomous robotic system performing sanding operations for surface defect removal in fiber glass panels. The proposed approach uses a collaborative robotic system equipped with a vision system. Surface defects are detected using traditional computer vision algorithms and a path planning strategy is designed that solves multi-goal and coverage path planning problems. The robotic system equipped with a specialized end-effector will autonomously perform sanding …

Go to article

Full-Text Articles in Entire DC Network

Division of Basic Science Faculty Publications

Special Issue: Emerging Paradigms In Insulin Resistance, J. Jason Collier, Susan J. Burke

Division of Basic Science Faculty Publications

Clinical Research Faculty Publications

Polyunsaturated Fatty Acid Intake And Brain Health: Balance Is The Key, Candida J. Rebello

Clinical Research Faculty Publications

Faculty Publications

The Covid-19 Pandemic And Associated Increases In Experiences Of Assault Violence Among Black Men With Low Socioeconomic Status Living In Louisiana, Kaylin Beiter, Denise Danos, Erich Conrad, Stephanie Broyles, Jovanny Zabaleta, Jason Mussell, Stephen Phillippi

Population and Public Health Science Faculty Publications

Ptsd Treatment Reduces Risk Of Trauma Recidivism In A Diverse Community At A Safety-Net Hospital: A Propensity Score Analysis Of Data From A Level One Trauma Center, Kaylin Beiter, Denise Danos, Erich Conrad, Stephanie Broyles, Jovanny Zabaleta, Jason Mussell, Stephen Phillippi

Population and Public Health Science Faculty Publications

Erratum: The Perfect Storm? Covid-19 And Substance Use Amongst Social Work Students In The Usa (The British Journal Of Social Work (2021) Doi: 10.1093/Bjsw/Bcab192), Youn Kyoung Kim, Sung Seek Moon, Mansoo Yu, Mee Young Um, Arati Maleku, Omoshola Kehinde, David Pooler

Faculty Publications

The Perfect Storm? Covid-19 And Substance Use Amongst Social Work Students In The Usa, Youn Kyoung Kim, Sung Seek Moon, Mansoo Yu, Mee Young Um, Arati Maleku, Omoshola Kehinde, David Pooler

Faculty Publications

Division of Basic Science Faculty Publications

Division of Basic Science Faculty Publications

Clinical Research Faculty Publications

Edwardsiella Ictaluri T3ss Effector Esen Modulates Expression Of Host Genes Involved In The Immune Response, Lidiya P. Dubytska, Ranjan Koirala, Azhia Sanchez, Ronald Thune

Faculty Publications

Beyond Quantum Cluster Theories: Multiscale Approaches For Strongly Correlated Systems, Herbert F. Fotso, Ka Ming Tam, Juana Moreno

Faculty Publications

Charging Of Radioactive And Environmental Airborne Particles, Gyoung G. Jang, Alexander I. Wiechert, Yong Ha Kim, Austin P. Ladshaw, Tyler Spano, Joanna Mcfarlane, Kristian Myhre, Joon Jin Song, Sotira Yiacoumi, Costas Tsouris

Faculty Publications

Low-Light Shadow Imaging Using Quadrature-Noise Detection With A Camera, Savannah L. Cuozzo, Pratik J. Barge, Nikunjkumar Prajapati, Narayan Bhusal, Hwang Lee, Lior Cohen, Irina Novikova, Eugeniy E. Mikhailov

Faculty Publications

Conditional Quantum Plasmonic Sensing, Fatemeh Mostafavi, Zeinab Jafari, Michelle L.J. Lollie, Chenglong You, Israel De Leon, Omar S. Magaña-Loaiza

Faculty Publications

Symplectic Effective Field Theory For Nuclear Structure Studies, D. Kekejian, J. P. Draayer, V. I. Mokeev, C. D. Roberts

Faculty Publications

Faculty Publications

Population and Public Health Science Faculty Publications

The Dual Nature Of The Nucleolus, Alan Tartakoff, Patrick Dimario, Eduard Hurt, Brian Mcstay, Vikram Govind Panse, David Tollervey

Faculty Publications

Mitochondrial Dna And Other Lines Of Evidence Clarify Species Diversity In The Peromyscus Truei Species Group (Cricetidae: Neotominae), Giovani Hernández-Canchola, Livia León-Paniagua, Jacob A. Esselstyn

Faculty Publications

Branched-Chain Amino Acids And Their Interactions With Lipid Metabolites For Increased Risk Of Gestational Diabetes, Ninghua Li, Jing Li, Hui Wang, Jinnan Liu, Weiqin Li, Kai Yang, Xiaoxu Huo, Junhong Leng, Zhijie Yu, Gang Hu, Zhongze Fang, Xilin Yang

Population and Public Health Science Faculty Publications

Faculty Publications

Ignoring Spatial And Spatiotemporal Dependence In The Disturbances Can Make Black Swans Appear Grey, R. Kelley Pace, Raffaella Calabrese

Faculty Publications

Faculty Publications

Better Colloidal Lithography: Tilt-Rotate Evaporation Overcomes The Limits Of Plasma Etching, Macayla J. Caso, Michael G. Benton, Kevin M. Mcpeak

Faculty Publications

Droplet Behavior In Overexpanded Supersonic Two-Phase Jets, Shyam Menon, Mohana Gurunadhan

Faculty Publications

Predicting Elastic Constants Of Refractory Complex Concentrated Alloys Using Machine Learning Approach, Uttam Bhandari, Hamed Ghadimi, Congyan Zhang, Shizhong Yang, Shengmin Guo

Faculty Publications

Towards A Fully Autonomous Robotic System For Detection And Removal Of Surface Defects In Fiber Glass Panels, James Oubre, William Ard, Joshua Nguyen, Corina Barbalata

Faculty Publications