cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Smoking withdrawal is associated with increases in brain activation during decision making and reward anticipation: a preliminary study
Creators: name: Smoski, Moria J.
name: Baranger, David A. A.
name: Dichter, Gabriel S.
name: McClernon, F. Joseph
name: Addicott, Merideth A.
name: Kozink, Rachel V.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Acute nicotine abstinence is associated with disruption of executive function and reward processes; however, the neurobiological basis of these effects has not been fully elucidated.
Lagrange's Theorem for Gyrogroups and the Cauchy Property
Creators: name: Suksumran, Teerapong
name: Wiboonton, Keng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20N05, 18A32, 20A05

description: In this paper, we prove a version of Lagrange's theorem for gyrogroups and use this result to prove that gyrogroups of particular orders have the strong Cauchy property.
Dissociative electron attachment dynamics of carbon disulfide and violation of axial recoil approximation near the 6-eV resonance
Creators: name: Paul, Anirban
name: Nandi, Dhananjay
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Complete dissociation dynamics of low-energy electron attachment to carbon disulfide have been studied using the velocity slice imaging (VSI) technique. The ion yields of S- and CS- fragment ions as the function of incident electron energy in the range 5 to 11 eV have been obtained. Two resonances for S- ions at around 6.2 eV and 7.7 eV and only one resonance for CS- ions at around 6.2 eV have been obtained in this energy range. The kinetic energy and the angular distributions of these fragment negative ions at different incident electron energies around these resonances have been measured. From the angular distribution of these fragment anions, we have found that the bending of the temporary negative ions causes a significant change in the angular distribution from the expected one.
A Study On Static And Dynamic Behaviour Of Outrigger Structural System For Different Structural Configuration
Creators: name: Manjula B Sajjanshetty
name: Prof. Galanna
Publisher: name: Innovative Publishers
Year: 2023

description: In comparison to low-rise structures due to the enormous number of different structural systems and components present, high-rise structures are more complicated than short buildings because they are more vulnerable to lateral and gravitational stresses as well as earthquake and wind loads. In comparison to strength standards, the stability and stiffness criteria will thus be of much more relevance and govern the final design. Therefore, outrigger and belt-truss system are one of the most common lateral forces resisting system (LFRS). Here in this study performance-based analysis is carried out by adopting ETABS software for a B+G+24 storey tall structure. And the aim and moto of the study is to compare the structural behaviour of bare frame structure (BFS), outrigger structure(OS) and outrigger with belt-truss structure(OBS) under liner static (LSA) and linear dynamic (LDA) such as response spectrum and time history analysis. From the work carried out, we can conclude that by adopting OS and OBS the structural safety is increased against lateral loads such as earthquake. The overall structural response is improved by increasing its mass and stiffness. Among OS and OBS when compared to BFS. OBS has performed well under both static and dynamic earthquake loading and thereby enabling the outrigger system to be used more effectively and enabling the system be integrated into design rules and standards.
Hierarchical structural control of visual properties in self-assembled photonic-plasmonic pigments
Creators: name: Koay, Natalie
name: Burgess, Ian B.
name: Kay, Theresa M.
name: Nerger, Bryan A.
name: Miles-Rossouw, Malaika
name: Shirman, Tanya
name: Vu, Thy L.
name: England, Grant
name: Phillips, Katherine R.
name: Utech, Stefanie
name: Vogel, Nicolas
name: Kolle, Mathias
name: Aizenberg, Joanna
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a simple one-pot co-assembly method for the synthesis of hierarchically structured pigment particles consisting of silica inverse-opal bricks that are doped with plasmonic absorbers. We study the interplay between the plasmonic and photonic resonances and their effect on the visual appearance of macroscopic collections of photonic bricks that are distributed in randomized orientations. Manipulating the pore geometry tunes the wavelength- and angle-dependence of the scattering profile, which can be engineered to produce angle-dependent Bragg resonances that can either enhance or contrast with the color produced by the plasmonic absorber. By controlling the overall dimensions of the photonic bricks and their aspect ratios, their preferential alignment can either be encouraged or suppressed. This causes the Bragg resonance to appear either as uniform color travel in the former case or as sparse iridescent sparkle in the later case. By manipulating the surface chemistry of these photonic bricks, which introduces a fourth length-scale of independent tuning into our design, we can further engineer interactions between liquids and the pores. This allows the structural color to be maintained in oil-based formulations, and enables the creation of dynamic liquid-responsive images from the pigment.
description: 19 pages, 10 figures
The effects of repeated corticosterone exposure on the interoceptive effects of alcohol in rats
Creators: name: Fisher, Kristen R.
name: Hodge, Clyde W.
name: Cannady, Reginald
name: Besheer, Joyce
name: Grondin, Julie J. M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Repeated and/or heightened elevations in glucocorticoids (e.g., repeated stress) can promote escalated drug-taking behaviors and induce compromised HPA axis function. Given that interoceptive/subjective drug cues are a fundamental factor in drug-taking behavior, we sought to determine the effects of exposure to repeated elevations in the glucocorticoid corticosterone (CORT) on the interoceptive effects of alcohol in rats using drug discrimination techniques.
Vorwort
Creators: name: Metz, Johann Baptist
name: Bröcker, W.
name: Oelmüller, Willi
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 1 Nr. 6 (1965): Concilium: Internationale Zeitschrift für Theologie, Band 1, Heft 6
Characterization of Highper, an ENU-induced mouse mutant with abnormal psychostimulant and stress responses
Creators: name: Huitron-Resendiz, Salvador
name: Roberts, Amanda J.
name: Grabowski-Boase, Laura
name: Tarantino, Lisa M.
name: Eisener-Dorman, Amy F.
name: Bailey, Janice S.
name: Wiltshire, Tim
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: RationaleChemical mutagenesis in the mouse is a forward genetics approach that introduces random mutations into the genome, thereby providing an opportunity to annotate gene function and characterize phenotypes that have not been previously linked to a given gene.ObjectivesWe report on the behavioral characterization of Highper, an N-ethyl-N-nitrosourea (ENU)-induced mutant mouse line.MethodsHighper and B6 control mice were assessed for locomotor activity in the open field and home cage environments. Basal and acute restraint stress-induced corticosterone levels were measured. Mice were tested for locomotor response to cocaine (5, 20, 30, and 45mg/kg), methylphenidate (30mg/kg), and ethanol (0.75, 1.25, and 1.75g/kg). The rewarding and reinforcing effects of cocaine were assessed using conditioned place preference and self-administration paradigms.ResultsHighper mice are hyperactive during behavioral tests but show normal home cage locomotor behavior. Highper mice also exhibit a twofold increase in locomotor response to cocaine, methylphenidate, and ethanol and prolonged activation of the hypothalamic–pituitary–adrenal axis in response to acute stress. Highper mice are more sensitive to the rewarding and reinforcing effects of cocaine, although place preference in Highper mice appears to be significantly influenced by the environment in which the drug is administered.ConclusionsAltogether, our findings indicate that Highper mice may provide important insights into the genetic, molecular, and biological mechanisms underlying stress and the drug reward pathway.Electronic supplementary materialThe online version of this article (doi:10.1007/s00213-012-2827-5) contains supplementary material, which is available to authorized users.
On the Cosmological Stability of the Higgs Instability
Creators: name: De Luca, Valerio
name: Kehagias, Alex
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Standard Model Higgs potential becomes unstable at large Higgs field values where its quartic coupling becomes negative. While the tunneling lifetime of our current electroweak vacuum is comfortably longer than the age of the universe, quantum fluctuations during inflation might push the Higgs over the barrier, forming patches which might be lethal for our universe. We study the cosmological evolution of such regions and find that, at least in the thin wall approximation, they may be harmless as they collapse due to the backreaction of the Higgs itself. The presence of the Standard Model Higgs instability can provide a novel mechanism to end inflation and to reheat the universe through the evaporation of the black holes left over by the collapse of the Higgs bubbles. The bound on the Hubble rate during inflation may be therefore relaxed.
description: 27 pages, 4 figures. v2: matching published version
Absence of a transport signature of spin-orbit coupling in graphene with indium adatoms
Creators: name: Jia, Zhenzhao
name: Yan, Baoming
name: Niu, Jingjing
name: Han, Qi
name: Zhu, Rui
name: Wu, Xiaosong
name: Yu, Dapeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Enhancement of the spin-orbit coupling in graphene may lead to various topological phenomena and also find applications in spintronics. Adatom absorption has been proposed as an effective way to achieve the goal. In particular, great hope has been held for indium in strengthening the spin-orbit coupling and realizing the quantum spin Hall effect. To search for evidence of the spin-orbit coupling in graphene absorbed with indium adatoms, we carry out extensive transport measurements, i.e., weak localization magnetoresistance, quantum Hall effect and non-local spin Hall effect. No signature of the spin-orbit coupling is found. Possible explanations are discussed.
description: 5 pages, 4 figures, with supplementary materials
On the Dynamics in the AdS/BCFT Correspondence
Creators: name: Suzuki, Yu-ki
name: Terashima, Seiji
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a perturbation of the Einstein gravity with the Neumann boundary condition, which is regarded as an end of the world brane (ETW brane) of the AdS/BCFT correspondence, in the AdSd+1 spaectime where d is larger than 2. We obtain the mode expansion of the perturbations explicitly for the tensionless ETW brane case. We also show that the energy-momentum tensor in a d-dimensional BCFT should satisfy nontrivial constraints other than the ones for the boundary conformal symmetry if the BCFT can couple to a d-dimensional gravity with a specific boundary condition, which can be the Neumann or the conformally Dirichlet boundary conditions. We find these constraints are indeed satisfied for the free scalar BCFT. For the BCFT in the AdS/BCFT, we find that the BCFT can couple to the gravity with the Neumann boundary condition for the tensionless brane, but the BCFT can couple to the gravity with the conformally Dirichlet boundary condition for the nonzero tension brane by using holographic relations.
description: 29 pages
Interplay of fractionality and $\cal{PT}$- symmetry on a 1D lattice
Creators: name: Molina, Mario I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We examine the stability domains of a 1D discrete Schrödinger equation in the simultaneous presence of parity-time ($\cal{PT}$) symmetry and fractionality. Direct numerical examination of the eigenvalues of the system reveals that, as the fractional exponent is decreased away from unity (the standard case), the instability gain increases abruptly past a critical value. Also, as the length of the system increases, the stable fraction decreases as well. Also, for a fixed fractional exponent and lattice size, an increase in gain/loss also brings about an abrupt increase in the instability gain. Finally, the participation ratio of the modes is seen to decrease with an increase of the gain/loss parameter and with a decrease of the fractional exponent, evidencing a tendency towards localization.
description: 5 pages, 4 figures
Allopregnanolone as a mediator of affective switching in reproductive mood disorders
Creators: name: Rubinow, David R.
name: Schmidt, Peter J.
name: Schiller, Crystal Edler
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Reproductive mood disorders, including premenstrual dysphoria (PMD) and postpartum depression (PPD), are characterized by affective dysregulation that occurs during specific reproductive states. The occurrence of illness onset during changes in reproductive endocrine function has generated interest in the role of gonadal steroids in the pathophysiology of reproductive mood disorders, yet the mechanisms by which the changing hormone milieu triggers depression in susceptible women remain poorly understood.
Divergent neuroactive steroid responses to stress and ethanol in rat and mouse strains: relevance for human studies
Creators: name: Porcu, Patrizia
name: Morrow, A. Leslie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Neuroactive steroids are endogenous or synthetic steroids that rapidly alter neuronal excitability via membrane receptors, primarily GABAA receptors. Neuroactive steroids regulate many physiological processes including hypothalamic-pituitary-adrenal (HPA) axis function, ovarian cycle, pregnancy, aging, and reward. Moreover, alterations in neuroactive steroid synthesis are implicated in several neuropsychiatric disorders.
High-precision nonadiabatic calculations of dynamic polarizabilities and hyperpolarizabilities for the lowlying vibrational-rotational states of hydrogen molecular ions
Creators: name: Tang, Li-Yan
name: Yan, Zong-Chao
name: Shi, Ting-Yun
name: Babb, James F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The static and dynamic electric multipolar polarizabilities and second hyperpolarizabilities of the H$_2^+$, D$_2^+$, and HD$^+$ molecular ions in the ground and first excited states are calculated nonrelativistically using explicitly correlated Hylleraas basis sets. The calculations are fully nonadiabatic; the Born-Oppenheimer approximation is not used. Comparisons are made with published theoretical and experimental results, where available. In our approach, no derivatives of energy functions nor derivatives of response functions are needed. In particular, we make contact with earlier calculations in the Born-Oppenheimer calculation where polarizabilities were decomposed into electronic, vibrational, and rotational contributions and where hyperpolarizabilities were determined from derivatives of energy functions. We find that the static hyperpolarizability for the ground state of HD$^+$ is seven orders of magnitude larger than the corresponding dipole polarizability. For the dipole polarizability of HD$^+$ in the first excited-state the high precision of the present method facilitates treatment of a near cancellation between two terms. For applications to laser spectroscopy of trapped ions we find tune-out and magic wavelengths for the HD$^+$ ion in a laser field. In addition, we also calculate the first few leading terms for long-range interactions of a hydrogen molecular ion interacting with a ground-state H, He, and Li atoms.
description: 7 figures
Extracellular vesicle microRNA in early versus late pregnancy with birth outcomes in the MADRES study
Creators: name: Howe, Caitlin G
name: Foley, Helen B
name: Kennedy, Elizabeth M
name: Eckel, Sandrah P
name: Chavez, Thomas a
name: Faham, Dema
name: Grubbs, Brendan H
name: Al-Marayati, Laila
name: Lerner, Deborah
name: Suglia, Shakira
name: Bastain, Theresa M
name: Marsit, Carmen J
name: Breton, Carrie V
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Circulating miRNA may contribute to the development of adverse birth outcomes. However, few studies have investigated extracellular vesicle (EV) miRNA, which play important roles in intercellular communication, or compared miRNA at multiple time points in pregnancy. In the current study, 800 miRNA were profiled for EVs from maternal plasma collected in early (median: 12.5 weeks) and late (median: 31.8 weeks) pregnancy from 156 participants in the MADRES Study, a health disparity pregnancy cohort. Associations between miRNA and birth weight, birth weight for gestational age (GA), and GA at birth were examined using covariate-adjusted robust linear regression. Differences by infant sex and maternal BMI were also investigated. Late pregnancy measures of 13 miRNA were associated with GA at birth (PFDR<0.050). Negative associations were observed for eight miRNA (miR-4454+ miR-7975, miR-4516, let-7b-5p, miR-126-3p, miR-29b-3p, miR-15a-5p, miR-15b-5p, miR-19b-3p) and positive associations for five miRNA (miR-212-3p, miR-584-5p, miR-608, miR-210-3p, miR-188-5p). Predicted target genes were enriched (PFDR<0.050) in pathways involved in organogenesis and placental development. An additional miRNA (miR-107), measured in late pregnancy, was positively associated with GA at birth in infants born to obese women (PFDR for BMI interaction = 0.011). In primary analyses, the associations between early pregnancy miRNA and birth outcomes were not statistically significant (PFDR≥0.05). However, sex-specific associations were observed for early pregnancy measures of 37 miRNA and GA at birth (PFDR for interactions<0.050). None of the miRNA were associated with fetal growth measures (PFDR≥0.050). Our findings suggest that EV miRNA in both early and late pregnancy may influence gestational duration.
Effects of Mindfulness-Oriented Recovery Enhancement on reward responsiveness and opioid cue-reactivity
Creators: name: Garland, Eric L.
name: Howard, Matthew O.
name: Froeliger, Brett
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Dysregulated reward processing is a hallmark feature of drug addiction; however scant research has evaluated restructuring reward processing in the context of addiction treatment.
Robust Constrained Multi-objective Evolutionary Algorithm based on Polynomial Chaos Expansion for Trajectory Optimization
Creators: name: Takubo, Yuji
name: Kanazaki, Masahiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: An integrated optimization method based on the constrained multi-objective evolutionary algorithm (MOEA) and non-intrusive polynomial chaos expansion (PCE) is proposed, which solves robust multi-objective optimization problems under time-series dynamics. The constraints in such problems are difficult to handle, not only because the number of the dynamic constraints is multiplied by the discretized time steps but also because each of them is probabilistic. The proposed method rewrites a robust formulation into a deterministic problem via the PCE, and then sequentially processes the generated constraints in population generation, trajectory generation, and evaluation by the MOEA. As a case study, the landing trajectory design of supersonic transport (SST) with wind uncertainty is optimized. Results demonstrate the quantitative influence of the constraint values over the optimized solution sets and corresponding trajectories, proposing robust flight controls.
description: 9 pages, 9 figures, 3 tables. Accepted to IEEE World Congress on Computational Intelligence 2022, Congress on Evolutionary Computation 2022
Effects of the neuroactive steroid allopregnanolone on intracranial self-stimulation in C57BL/6J Mice
Creators: name: Morrow, A. Leslie
name: Robinson, J. Elliott
name: DiBerto, Jeff F.
name: Whitman, Buddy J.
name: Malanga, C. J.
name: Fish, Eric W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: The neuroactive steroid (3α,5α)-3-hydroxy-pregnan-20-one (3α,5α-THP, allopregnanolone) has effects on reward-related behaviors in mice and rats that suggest that it may activate brain reward circuits. Intracranial self-stimulation (ICSS) is an operant behavioral technique that detects changes in the sensitivity of brain reward circuitry following drug administration.
Die Bedeutung des Dekrets «De oecumenismo» für den Dialog mit den nichtkatholischen Kirchen des Ostens
Creators: name: Lercaro, Giacomo
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 1 Nr. 5 (1965): Concilium: Internationale Zeitschrift für Theologie, Band 1, Heft 5
Die ORCID iD –der persönliche Identifier in der Wissenschaft
Creators: name: Schrader, Antonia
Publisher: name: Forschungzentrum Jülich
Year: 2022
Subjects: ORCID
Open Researcher and Contributor ID
ORCID DE
PIDs
Open Science
Persistent Identifier
PID
Implementierung

description: doi:10.5281/ZENODO.6701507
description: Prinzip und Funktionsweise von Persistent Identifiern (PIDs), von ORCID, von ROR, Vorteile für Wissenschaftler:innen und Einrichtungen von ORCID, ORCID-Mitgliedschaft für Einrichtungen, ORCID aus datenschutzrechtlicher Sicht
The VLA Nascent Disk And Multiplicity (VANDAM) Survey of Perseus Protostars. Resolving the Sub-Arcsecond Binary System in NGC 1333 IRAS2A
Creators: name: Tobin, John J.
name: Dunham, Michael M.
name: Looney, Leslie W.
name: Li, Zhi-Yun
name: Chandler, Claire J.
name: Segura-Cox, Dominique
name: Sadavoy, Sarah I.
name: Melis, Carl
name: Harris, Robert J.
name: Perez, Laura M.
name: Kratter, Kaitlin
name: Jorgensen, Jes K.
name: Plunkett, Adele L.
name: Hull, Charles L. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We are conducting a Jansky VLA Ka-band (8 mm and 1 cm) and C-band (4 cm and 6.4 cm) survey of all known protostars in the Perseus Molecular Cloud, providing resolution down to $\sim$0.06'' and $\sim$0.35" in Ka-band and C-band, respectively. Here we present first results from this survey that enable us to examine the source NGC 1333 IRAS2A in unprecedented detail and resolve it into a proto-binary system separated by 0.621"$\pm$0.006" ($\sim$143 AU) at 8 mm, 1 cm, and 4 cm. These 2 sources (IRAS2A VLA1 and VLA2) are likely driving the two orthogonal outflows known to originate from IRAS2A. The brighter source IRAS2A VLA1 is extended perpendicular to its outflow in the VLA data, with a deconvolved size of 0.055" ($\sim$13 AU), possibly tracing a protostellar disk. The recently reported candidate companions (IRAS2A MM2 and MM3) are not detected in either our VLA data, CARMA 1.3 mm data, or SMA 850 $μ$m data. SMA CO ($J=3\rightarrow2$), CARMA CO ($J=2\rightarrow1$), and lower resolution CARMA CO ($J=1\rightarrow0$) observations are used to examine the outflow origins and the nature of the candidate companions to IRAS2A VLA1. The CO ($J=3\rightarrow2$) and ($J=2\rightarrow1$) data show that IRAS2A MM2 is coincident with a bright CO emission spot in the east-west outflow, and IRAS2A MM3 is within the north-south outflow. In contrast, IRAS2A VLA2 lies at the east-west outflow symmetry point. We propose that IRAS2A VLA2 is the driving source of the East-West outflow and a true companion to IRAS2A VLA1, whereas IRAS2A MM2 and MM3 may not be protostellar.
description: Accepted to ApJ, 27 pages, 6 Figures, 2 Tables
Intellectual, neurocognitive, and academic achievement in abstinent adolescents with cannabis use disorder
Creators: name: Woolley, Donald
name: De Bellis, Michael D.
name: Hooper, Stephen R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: The active component of cannabis, delta-9 tetrahydrocannabinol (THC), has a long half-life and widespread neurocognitive effects. There are inconsistent reports of neurocognitive deficits in adults and adolescents with cannabis use disorders (CUD), particularly after a period of abstinence.
Two-loop power spectrum with full time- and scale-dependence and EFT corrections: impact of massive neutrinos and going beyond EdS
Creators: name: Garny, Mathias
name: Taule, Petter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the density and velocity power spectra at next-to-next-to-leading order taking into account the effect of time- and scale-dependent growth of massive neutrino perturbations as well as the departure from Einstein--de-Sitter (EdS) dynamics at late times non-linearly. We determine the impact of these effects by comparing to the commonly adopted approximate treatment where they are not included. For the bare cold dark matter (CDM)+baryon spectrum, we find percent deviations for $k\gtrsim 0.17h~\mathrm{Mpc}^{-1}$, mainly due to the departure from EdS. For the velocity and cross power spectrum the main difference arises due to time- and scale-dependence in presence of massive neutrinos yielding percent deviation above $k\simeq 0.08, 0.13, 0.16h~\mathrm{Mpc}^{-1}$ for $\sum m_ν = 0.4, 0.2, 0.1~\mathrm{eV}$, respectively. We use an effective field theory (EFT) framework at two-loop valid for wavenumbers $k \gg k_{\mathrm{FS}}$, where $k_{\mathrm{FS}}$ is the neutrino free-streaming scale. Comparing to Quijote N-body simulations, we find that for the CDM+baryon density power spectrum the effect of neutrino perturbations and exact time-dependent dynamics at late times can be accounted for by a shift in the one-loop EFT counterterm, $Δ\barγ_1 \simeq - 0.2~\mathrm{Mpc}^2/h^2$. We find percent agreement between the perturbative and N-body results up to $k\lesssim 0.12h~\mathrm{Mpc}^{-1}$ and $k\lesssim 0.16h~\mathrm{Mpc}^{-1}$ at one- and two-loop order, respectively, for all considered neutrino masses $\sum m_ν \leq 0.4~\mathrm{eV}$.
description: 30 pages, 14 figures
PLATO stellar rotation and activity measurements
Creators: name: Breton, Sylvain N.
name: Lanza, Antonino F.
name: Messina, Sergio
name: Pagano, Isabella
name: Bugnet, Lisa
name: Corsaro, Enrico
name: García, Rafael A.
name: Mathur, Savita
name: Santos, Ângela R. G.
name: Aigrain, Suzanne
name: Amard, Louis
name: Brun, Allan Sacha
name: Degott, Lucie
name: Noraz, Quentin
name: Palakkatharappil, Dinil B.
name: Panetier, Eva
name: Strugarek, Antoine
name: Belkacem, Kévin
name: Goupil, Marie-Jo
name: Ouazzani, Rhita-Maria
name: Philidet, Jordan
name: Renié, Christian
name: Roth, Olivier
Publisher: name: Zenodo
Year: 2024

description: The PLATO stellar analysis pipeline will provide photometric rotation and activity measurements for as many observed stars as possible. This poster is aimed at presenting the scientific abilities of the rotation and activity analysis module that will be implemented in the PLATO pipeline. The strategy combines Fourier analysis, autocorrelation of time series and machine learning classifiers to extract both stellar surface rotation and long-term modulations related to stellar magnetic activity that might be detectable in the light curve. The ROOSTER random forest methodology guarantees the completeness and the robustness of this automated analysis. To showcase the potential of the designed framework, the algorithms were applied on a set of simulated light curves including spot evolution and migration, magnetic activity cycles, convective granulation, PLATO systematics, and random camera noise. From that analysis, we demonstrate that PLATO should already be able to provide rotation periods and photometric activity indices for a large sample after the first six months of observation, and that the quality of these measurements will be refined as longer time series are acquired.
Renormalization of excitonic properties by polar phonons
Creators: name: Park, Yoonjae
name: Limmer, David T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We employ quasiparticle path integral molecular dynamics to study how the excitonic properties of model semiconductors are altered by electron-phonon coupling. We describe ways within a path integral representation of the system to evaluate the renormalized mass, binding energy, and radiative recombination rate of excitons in the presence of a fluctuating lattice. To illustrate this approach, we consider Fröhlich-type electron-phonon interactions and employ an imaginary time influence functional to incorporate phonon-induced effects nonperturbatively. The effective mass and binding energies are compared with perturbative and variational approaches, which provide qualitatively consistent trends. We evaluate electron-hole recombination rates as mediated through both trap-assisted and bimolecular processes, developing a consistent statistical mechanical approach valid in the reaction limited regime. These calculations demonstrate how phonons screen electron-hole interactions, generically reducing exciton binding energies and increasing their radiative lifetimes.
description: 12 pages, 8 figures
Involvement of amygdalar protein kinase A, but not calcium/calmodulin-dependent protein kinase II, in the reconsolidation of cocaine-related contextual memories in rats
Creators: name: Fuchs, Rita A.
name: Hodges, Matthew A.
name: Lara, Honorio
name: Wells, Audrey M.
name: Arguello, Amy A.
name: Xie, Xiaohu
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Contextual control over drug relapse depends on the successful reconsolidation and retention of context-response-cocaine associations in long-term memory stores. The basolateral amygdala (BLA) plays a critical role in cocaine memory reconsolidation and subsequent drug context-induced cocaine-seeking behavior; however, less is known about the cellular mechanisms of this phenomenon.
Anomalous Reflection Phase of Graphene Plasmons and its Influence on Resonators
Creators: name: Nikitin, A. Yu.
name: Low, T.
name: Martin-Moreno, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The phase picked up by a graphene plasmon upon scattering by an abrupt edge is commonly assumed to be $-π$. Here, it is demonstrated that for high plasmon momenta this reflection phase is $\approx -3π/4$, virtually independent on either chemical potential, wavelength or dielectric substrate. This non-trivial phase arises from a complex excitation of highly evanescent modes close to the edge, which are required to satisfy the continuity of electric and magnetic fields. A similar result for the reflection phase is expected for other two-dimensional systems supporting highly confined plasmons (very thin metal films, topological insulators, transition polaritonic layers, etc.). The knowledge of the reflection phase, combined with the phase picked up by the plasmon upon propagation, allows the estimation of resonator properties from the dispersion relation of plasmons in the infinite monolayer.
description: accepted to PRB
Neurosteroid, GABAergic and hypothalamic pituitary adrenal (HPA) axis regulation: what is the current state of knowledge in humans?
Creators: name: Girdler, Susan S.
name: Crowley, Shannon K.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: A robust epidemiological literature suggests an association between chronic stress and the development of affective disorders. However, the precise biological underpinnings of this relationship remain elusive. Central to the human response and adaptation to stress, activation and inhibition of the hypothalamic pituitary adrenal (HPA) axis involves a multi-level, multi-system, neurobiological stress response which is as comprehensive in its complexity as it is precarious. Dysregulation in this complex system has implications for human stress related illness.
Instability of oscillations in the Rosenzweig-MacArthur model of one consumer and two resources
Creators: name: Gawroński, Przemysław
name: Borzì, Alfio
name: Kułakowski, Krzysztof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The system of two resources $R_1$, $R_2$ and one consumer $C$ is investigated within the Rosenzweig-MacArthur model with Holling type II functional response. The rates $β_i$ of consumption of resources $i=1,2$ are coupled by the condition $β_1+β_2=1$. The dynamic switching is introduced by a maximization of $C$: $dβ_1/dt=(1/τ) dC/dβ_1$, where the characteristic time $τ$ is large but finite. The space of parameters where both resources coexist is explored numerically. The results indicate that oscillations of $C$ and mutually synchronized $R_i$ which appear at $β_i=0.5$ are destabilized for $β_i$ larger or smaller. Then, the system is driven to one of fixed points where either $β_1>0.5$ and $R_1
description: 14 pages, 8 figures
Bayesian inference of cosmic density fields from non-linear, scale-dependent, and stochastic biased tracers
Creators: name: Ata, Metin
name: Kitaura, Francisco-Shu
name: Müller, Volker
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Statistics Theory (math.ST)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present a Bayesian reconstruction algorithm to generate unbiased samples of the underlying dark matter field from halo catalogues. Our new contribution consists of implementing a non-Poisson likelihood including a deterministic non-linear and scale-dependent bias. In particular we present the Hamiltonian equations of motions for the negative binomial (NB) probability distribution function. This permits us to efficiently sample the posterior distribution function of density fields given a sample of galaxies using the Hamiltonian Monte Carlo technique implemented in the Argo code. We have tested our algorithm with the Bolshoi $N$-body simulation at redshift $z = 0$, inferring the underlying dark matter density field from sub-samples of the halo catalogue with biases smaller and larger than one. Our method shows that we can draw closely unbiased samples (compatible within 1-$σ$) from the posterior distribution up to scales of about $k$~1 h/Mpc in terms of power-spectra and cell-to-cell correlations. We find that a Poisson likelihood yields reconstructions with power spectra deviating more than 10% at $k$=0.2 h/Mpc. Our reconstruction algorithm is especially suited for emission line galaxy data for which a complex non-linear stochastic biasing treatment beyond Poissonity becomes indispensable.
description: 10 pages, 7 figures
Kinetic Simulations of Rayleigh-Taylor Instabilities
Creators: name: Sagert, Irina
name: Bauer, Wolfgang
name: Colbry, Dirk
name: Howell, Jim
name: Staber, Alec
name: Strother, Terrance
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on an ongoing project to develop a large scale Direct Simulation Monte Carlo code. The code is primarily aimed towards applications in astrophysics such as simulations of core-collapse supernovae. It has been tested on shock wave phenomena in the continuum limit and for matter out of equilibrium. In the current work we focus on the study of fluid instabilities. Like shock waves these are routinely used as test-cases for hydrodynamic codes and are discussed to play an important role in the explosion mechanism of core-collapse supernovae. As a first test we study the evolution of a single-mode Rayleigh-Taylor instability at the interface of a light and a heavy fluid in the presence of a gravitational acceleration. To suppress small-wavelength instabilities caused by the irregularity in the separation layer we use a large particle mean free path. The latter leads to the development of a diffusion layer as particles propagate from one fluid into the other. For small amplitudes, when the instability is in the linear regime, we compare its position and shape to the analytic prediction. Despite the broadening of the fluid interface we see a good agreement with the analytic solution. At later times we observe the development of a mushroom like shape caused by secondary Kelvin-Helmholtz instabilities as seen in hydrodynamic simulations and consistent with experimental observations.
description: Conference proceeding for The 30th Winter Workshop on Nuclear Dynamics 2014, 5 pages, 2 figures
Reduction of circulating and selective limbic brain levels of (3α,5α)-3-hydroxy-pregnan-20-one (3α,5α-THP) following forced swim stress in C57BL/6J mice
Creators: name: McKinley, Raechel E.
name: Morrow, A. Leslie
name: O’Buckley, Todd K.
name: Cook, Jason B.
name: Maldonado-Devincci, Antoniette M.
name: Beattie, Matthew C.
name: Morrow, Danielle H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Stress activates the hypothalamic-pituitary-adrenal (HPA) axis, and GABAergic neuroactive steroids contribute to homeostatic regulation of this circuitry. Acute forced swim stress (FSS) increases plasma, cortical, and hypothalamic (3α,5α)-3-hydroxy-pregnan-20-one (3α,5α-THP) levels in rats. However, there have not been systemic investigations of acute stress on changes in plasma and brain levels of 3α,5α-THP in mouse models.
Maternal blood metal concentrations and whole blood DNA methylation during pregnancy in the Early Autism Risk Longitudinal Investigation (EARLI)
Creators: name: Aung, Max T.
name: Bakulski, Kelly M.
name: Feinberg, Jason I.
name: Dou, John F.
name: Meeker, John D.
name: Mukherjee, Bhramar
name: Loch-Caruso, Rita
name: Ladd-Acosta, Christine
name: Volk, Heather E.
name: Croen, Lisa A.
name: Hertz-Picciotto, Irva
name: Newschaffer, Craig J.
name: Fallin, M. Daniele
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The maternal epigenome may be responsive to prenatal metals exposures. We tested whether metals are associated with concurrent differential maternal whole blood DNA methylation. In the Early Autism Risk Longitudinal Investigation cohort, we measured first or second trimester maternal blood metals concentrations (cadmium, lead, mercury, manganese, and selenium) using inductively coupled plasma mass spectrometry. DNA methylation in maternal whole blood was measured on the Illumina 450 K array. A subset sample of 97 women had both measures available for analysis, all of whom did not report smoking during pregnancy. Linear regression was used to test for site-specific associations between individual metals and DNA methylation, adjusting for cell type composition and confounding variables. Discovery gene ontology analysis was conducted on the top 1,000 sites associated with each metal. We observed hypermethylation at 11 DNA methylation sites associated with lead (FDR False Discovery Rate q-value <0.1), near the genes CYP24A1, ASCL2, FAT1, SNX31, NKX6-2, LRC4C, BMP7, HOXC11, PCDH7, ZSCAN18, and VIPR2. Lead-associated sites were enriched (FDR q-value <0.1) for the pathways cell adhesion, nervous system development, and calcium ion binding. Manganese was associated with hypermethylation at four DNA methylation sites (FDR q-value <0.1), one of which was near the gene ARID2. Manganese-associated sites were enriched for cellular metabolism pathways (FDR q-value<0.1). Effect estimates for DNA methylation sites associated (p < 0.05) with cadmium, lead, and manganese were highly correlated (Pearson ρ > 0.86). DNA methylation sites associated with lead and manganese may be potential biomarkers of exposure or implicate downstream gene pathways.
Noise-to-signal ratio of single-trajectory spectral densities in centered Gaussian processes
Creators: name: Squarcini, Alessio
name: Marinari, Enzo
name: Oshanin, Gleb
name: Peliti, Luca
name: Rondoni, Lamberto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We discuss the statistical properties of a single-trajectory power spectral density $S(ω,\mathcal{T})$ of an arbitrary real-valued centered Gaussian process $X(t)$, where $ω$ is the angular frequency and $\mathcal{T}$ the observation time. We derive a double-sided inequality for its noise-to-signal ratio and obtain the full probability density function of $S(ω,\mathcal{T})$. Our findings imply that the fluctuations of $S(ω,\mathcal{T})$ exceed its average value $μ(ω,\mathcal{T})$. This implies that using $μ(ω,\mathcal{T})$ to describe the behavior of these processes can be problematic. We finally evaluate the typical behavior of $S(ω,\mathcal{T})$ and find that it deviates markedly from the average $μ(ω,\mathcal{T})$ in most cases.
description: 10 pages
Operant ethanol self-administration increases extracellular-signal regulated protein kinase (ERK) phosphorylation in reward-related brain regions: selective regulation of positive reinforcement in the prefrontal cortex of C57BL/6J mice
Creators: name: Salling, Michael C.
name: Faccidomo, Sara
name: Hodge, Clyde W.
name: Galunas, Christina
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Extracellular-signal regulated protein kinase (ERK1/2) is activated by ethanol in reward-related brain regions. Accordingly, systemic inhibition of ERK1/2 potentiates ethanol reinforcement. However, the brain region(s) that mediate this effect are unknown.
The role of varenicline on alcohol-primed self-administration and seeking behavior in rats
Creators: name: Jaramillo, Anel A.
name: Randall, Patrick A.
name: Besheer, Joyce
name: Frisbee, Suzanne
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Varenicline, a smoking-cessation agent, may be useful in treating alcohol use disorders. An important consideration when studying factors that influence drinking/relapse is influence of the pharmacological effects of alcohol on these behaviors. Pre-exposure to alcohol (priming) can increase craving, drinking and seeking behaviors.
An investigation of plasma and salivary oxytocin responses in breast- and formula-feeding mothers of infants
Creators: name: Davenport, Russell E.
name: Grewen, Karen M.
name: Light, Kathleen C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Oxytocin (OT) is a peptide increasingly studied in relation to human social interactions, affiliation, and clinical disorders. Studies are constrained by use of invasive blood draws and would benefit from a reliable salivary OT assay. Our goals were to examine feasibility of salivary OT measurement, compare salivary to plasma OT responses in 12 breast- and 8 formula-feeding mothers, and assess the degree of correlation between plasma and salivary OT. Using a commercial EIA kit, we measured OT in 5 saliva and 7 plasma samples in a protocol designed to elicit changes in OT (Rest, Infant Interaction, Stress, Feeding). Breast-feeders had higher OT levels than formula-feeders across all conditions in plasma (+36%) and saliva (+23%). OT levels and ranges were similar in saliva and plasma, with slightly greater variance in saliva. Concurrently sampled plasma and salivary OT were correlated at end of Baseline Rest (r = +.59, p = .022) and Post-Stress Recovery (r = +.59, p = .025). These data suggest that salivary OT assay is feasible, and will be of value where plasma samples are not possible. Validation with larger samples is needed.
Active galactic nuclei at z ~ 1.5: I. Spectral energy distribution and accretion discs
Creators: name: Capellupo, Daniel M.
name: Netzer, Hagai
name: Lira, Paulina
name: Trakhtenbrot, Benny
name: Mejía-Restrepo, Julían
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The physics of active super massive black holes (BHs) is governed by their mass (M_BH), spin (a*) and accretion rate ($\dot{M}$). This work is the first in a series of papers with the aim of testing how these parameters determine the observable attributes of active galactic nuclei (AGN). We have selected a sample in a narrow redshift range, centered on z~1.55, that covers a wide range in M_BH and $\dot{M}$, and are observing them with X-shooter, covering rest wavelengths ~1200-9800 Å. The current work covers 30 such objects and focuses on the origin of the AGN spectral energy distribution (SED). After estimating M_BH and $\dot{M}$ based on each observed SED, we use thin AD models and a Bayesian analysis to fit the observed SEDs in our sample. We are able to fit 22/30 of the SEDs. Out of the remaining 8 SEDs, 3 can be fit by the thin AD model by correcting the observed SED for reddening within the host galaxy and 4 can be fit by adding a disc wind to the model. In four of these 8 sources, Milky Way-type extinction, with the strong 2175Å feature, provides the best reddening correction. The distribution in spin parameter covers the entire range, from -1 to 0.998, and the most massive BHs have spin parameters greater than 0.7. This is consistent with the "spin-up" model of BH evolution. Altogether, these results indicate that thin ADs are indeed the main power houses of AGN, and earlier claims to the contrary are likely affected by variability and a limited observed wavelength range.
description: 23 pages, 14 figures, accepted for publication in MNRAS