cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- VIII. A search for hot cores by using C$_2$H$_5$CN, CH$_3$OCHO and CH$_3$OH lines
Creators: name: Qin, Sheng-Li
name: Liu, Tie
name: Liu, Xunchuan
name: Goldsmith, Paul F.
name: Li, Di
name: Zhang, Qizhou
name: Liu, Hong-Li
name: Wu, Yuefang
name: Bronfman, Leonardo
name: Juvela, Mika
name: Lee, Chang Won
name: Garay, Guido
name: Zhang, Yong
name: He, Jinhua
name: Hsu, Shih-Ying
name: Shen, Zhi-Qiang
name: Lee, Jeong-Eun
name: Wang, Ke
name: Tang, Ningyu
name: Tang, Mengyao
name: Zhang, Chao
name: Yue, Yinghua
name: Xue, Qiaowei
name: Li, Shang-Huo
name: Peng, Yaping
name: Dutta, Somnath
name: Jixing, Ge
name: Xu, Fengwei
name: Chen, Longfei
name: Baug, Tapas
name: dewanggan, Lokesh
name: Tej, Anandmayee
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Hot cores characterized by rich lines of complex organic molecules are considered as ideal sites for investigating the physical and chemical environments of massive star formation. We present a search for hot cores by using typical nitrogen- and oxygen-bearing complex organic molecules (C$_2$H$_5$CN, CH$_3$OCHO and CH$_3$OH), based on ALMA Three-millimeter Observations of Massive Star-forming regions (ATOMS). The angular resolutions and line sensitivities of the ALMA observations are better than 2 arcsec and 10 mJy/beam, respectively. A total of 60 hot cores are identified with 45 being newly detected, in which the complex organic molecules have high gas temperatures ($>$ 100 K) and small source sizes ($
description: 52 pages; Accepted by MNRAS
Patriarchy, Pandemics and the Gendered Resource Curse Thesis: Evidence from Petroleum Geology
Creators: name: Animashaun, Jubril
name: Wossink, Grada
name: Animashaun, Jubril
name: Wossink, Grada
Publisher: name: Unknown
Year: 2021
Subjects: Resource /Energy Economics and Policy
Labor and Human Capital

description: Session ID 4737, Paper# 18637
Correlation-enhanced electron-phonon coupling and superconductivity in (Ba,K)SbO$_3$ superconductors
Creators: name: Yuan, Zhihong
name: Zheng, Pengyu
name: Peng, Yiran
name: Liu, Rui
name: Ma, Xiaobo
name: Wang, Guangwei
name: Yu, Tianye
name: Yin, Zhiping
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The electronic structure, lattice dynamics, and electron-phonon coupling (EPC) of the newly discovered (Ba,K)SbO$_3$ superconductors are investigated by first-principles calculations. The EPC of (Ba,K)SbO$_3$ is significantly enhanced by considering non-local electronic correlation using the Heyd-Scuseria-Ernzerhof hybrid exchange-correlation functional (HSE06). The EPC strength λ of Ba$_{0.35}$K$_{0.65}$SbO$_3$ is strongly increased from 0.33 in local-density approximation calculations to 0.59 in HSE06 calculations, resulting in a superconducting transition temperature Tc of about 14.9 K, which is in excellent agreement with experimental value of ~ 15 K. Our findings suggest (Ba,K)SbO$_3$ are extraordinary conventional superconductors, where non-local electronic correlation expands the bandwidth, enhances the EPC, and boosts the Tc. Moreover, we find both λ and Tc depend crucially on the K-doping level for (Ba,K)SbO$_3$ and (Ba,K)SbO$_3$ compounds. (Ba,K)SbO$_3$ have stronger EPC strength and higher Tc than those of (Ba,K)SbO$_3$ at the same K-doping level.
description: 29 pages, 10 figures
Emission line taxonomy and the nature of AGN-looking galaxies in the SDSS
Creators: name: Fernandes, Roberto Cid
name: Stasinska, Grazyna
name: Asari, Natalia Vale
name: Mateus, Abilio
name: Schlickmann, Marielli
name: Schoenell, William
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Massive spectroscopic surveys like the SDSS have revolutionized the way we study AGN and their relations to the galaxies they live in. A first step in any such study is to define samples of different types of AGN on the basis of emission line ratios. This deceivingly simple step involves decisions on which classification scheme to use and data quality censorship. Galaxies with weak emission lines are often left aside or dealt with separately because one cannot fully classify them onto the standard Star-Forming, Seyfert of LINER categories. This contribution summarizes alternative classification schemes which include this very numerous population. We then study how star-formation histories and physical properties of the hosts vary from class to class, and present compelling evidence that the emission lines in the majority of LINER-like systems in the SDSS are not powered by black-hole accretion. The data are fully consistent with them being galaxies whose old stars provide all the ionizing power needed to explain their line ratios and luminosities. Such retired galaxies deserve a place in the emission line taxonomy.
description: 8 pages, 4 figures, Proceedings of IAU Symposium 267, Co-Evolution of Central Black Holes and Galaxies
Effects of Fairtrade on Farm Household Food Security and Living Standards: Insights from Côte d’Ivoire
Creators: name: Knößlsdorfer, Isabel
name: Sellare, Jorge
name: Qaim, Matin
name: Knößlsdorfer, Isabel
name: Sellare, Jorge
name: Qaim, Matin
Publisher: name: Unknown
Year: 2021
Subjects: Food Security and Poverty
Consumer/Household Economics

description: Session ID 4714, Paper# 18645
Edge influences and effects of fragmentation on ectomycorrhizal fungal communities in and surrounding 27-year-old openings in an Engelmann spruce - Subalpine fir forest
Creators: name: Rianhard, Olivia
Publisher: name: University of British Columbia
Year: 2024

description: The response of ectomycorrhizal fungi (EMF) to high elevation logging is understudied. Furthermore, studies of EMF communities after logging often focus on openings without examining adjacent uncut forests. This study investigated EMF communities in and surrounding openings in interior British Columbia. Studies conducted at the same site three seasons after logging found a decline in EMF richness and diversity (i) on roots of cut trees as they died; and (ii) on roots of young seedlings planted at > 16 m into the openings as compared to seedlings planted at the forest edge. Additionally, EMF communities in the openings remained different from those in the forest 12 years after logging. I returned to this site 27 years after logging; I hypothesized that forest influence on EMF richness and community composition would not have progressed further into the openings since last studied due to persisting environmental heterogeneity between the forest and openings. I also investigated spatial patterns of the EMF community in the forest for the first time at this site. I conducted Pacific Bioscience (PacBio) sequencing on ectomycorrhizal root tips of Engelmann spruce and Subalpine fir collected from the forest and openings and found that the EMF community in the forest was still different than that in the openings. The forest community had 46.05% greater richness and an overall different composition than opening communities. While the forest was characterized by late-seral associated taxa (e.g., Russula spp.), opening communities were still characterized by ruderal taxa (e.g., Amphinema byssoides and Thelephora terrestris). I also found (i) no change from earlier studies in the extent of forest influence on EMF richness or community composition in the openings; and (ii) no threshold distance into the forest at which EMF richness or community composition changed. These findings indicate that though EMF succession in the openings has been slow, the EMF community in the surrounding uncut forest may not be strongly affected by fragmentation. Therefore, similar forests may benefit from methods of timber harvest that increase forest influence by maximizing the edge to area ratio of openings or that increase environmental homogeneity between the forest and openings.
The DRAKE mission: finding the frequency of life in the Cosmos
Creators: name: Sarkar, Subhajit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In the search for life in the Universe, exoplanets represent numerous natural experiments in planet formation, evolution, and the emergence of life. This raises the fascinating prospect of evaluating cosmic life on a statistical basis. One key statistic is the occurrence rate of life-bearing worlds, $f_{\rm L}$, the 'frequency of life' term in the famous Drake Equation. Measuring $f_{\rm L}$ would give profound insight into how common life is and may help to constrain origin-of-life theories. I propose $f_{\rm L}$ as the goal for the DRAKE mission (Dedicated Research for Advancing Knowledge of Exobiology): a transit spectroscopy survey of M-dwarf habitable zone terrestrial planets. I investigate how the uncertainty on the observed value of $f_{\rm L}$ scales with sample size. I determine that sampling error dominates over observational error and that the uncertainty is a function of the observed $f_{\rm L}$ value. I show that even small sample sizes can provide significant constraints on $f_{\rm L}$, boding well for the transit spectroscopy approach. I perform a feasibility study of the DRAKE mission using a nominal instrument design and mission plan. Due to low observing efficiencies, DRAKE may need to be incorporated into a wider-ranging deep-space or lunar observatory. A 50-planet survey could constrain $f_{\rm L}$ to $\leq$ 0.06 (at 95% confidence) if the sample $f_{\rm L}$ = 0, or 0.03-0.2 if the sample $f_{\rm L}$ = 0.1. This can be achieved (on average) in 10 years using a 17-m telescope with an unrestricted field-of-regard. DRAKE is a viable approach to attempting the first experimental measurement of $f_{\rm L}$.
description: Accepted for publication in MNRAS: 19 pages, 11 figures
Assessment of Farmers' Willingness to Pay Towards the Sustainability of Plant Clinics: Evidence from Bangladesh, Rwanda and Zambia.
Creators: name: Ogunmodede, Adewale M.
name: Tambo, Justice A.
name: Gulak, Dominic M
name: Adeleke, Adetunji T.
name: Ogunsanwo, Mary O.
name: Ogunmodede, Adewale M.
name: Tambo, Justice A.
name: Gulak, Dominic M
name: Adeleke, Adetunji T.
name: Ogunsanwo, Mary O.
Publisher: name: Unknown
Year: 2021
Subjects: Farm Management

description: Session ID 4815, Paper# 18658
Additional file 2 of Ginsenoside Rg1 attenuates the NASH phenotype by regulating the miR-375-3p/ATG2B/PTEN-AKT axis to mediate autophagy and pyroptosis
Creators: name: Chen, Xuanxin
name: Xue, Wei
name: Zhang, Jia
name: Peng, Jiayi
name: Huang, Wenxiang
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Additional file 2.
Hello, Can You Hear Me? Impact of Speaker Phones on Responses in Phone Surveys during COVID-19
Creators: name: Alvi, Muzna
name: Gupta, Shweta
name: Alvi, Muzna
name: Gupta, Shweta
Publisher: name: Unknown
Year: 2021
Subjects: Health Economics and Policy

description: Session ID 4760, Paper# 18661
Unusual glitch activity in the RRAT J1819-1458: an exhausted magnetar?
Creators: name: Lyne, A. G.
name: McLaughlin, M. A.
name: Keane, E. F.
name: Kramer, M.
name: Espinoza, C. M.
name: Stappers, B. W.
name: Palliyaguru, N. T.
name: Miller, J.
name: .
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of regular timing observations of the high-magnetic-field Rotating Radio Transient (RRAT) J1819$-$1458 obtained using the 64-m Parkes and 76-m Lovell radio telescopes over the past five years. During this time, the RRAT has suffered two significant glitches with fractional frequency changes of $0.6\times10^{-6}$ and $0.1\times10^{-6}$. Glitches of this magnitude are a phenomenon displayed by both radio pulsars and magnetars. However, the behaviour of J1819$-$1458 following these glitches is quite different to that which follows glitches in other neutron stars, since the glitch activity resulted in a significant long-term net decrease in the slow-down rate. If such glitches occur every 30 years, the spin-down rate, and by inference the magnetic dipole moment, will drop to zero on a timescale of a few thousand years. There are also significant increases in the rate of pulse detection and in the radio pulse energy immediately following the glitches.
description: accepted for publication in MNRAS, 7 pages, 7 figures, 1 table
Understanding the Role of Perceived Land Rights in the Formation of Farmers’ Intentions: Evidence from Central Asia
Creators: name: Akhmadiyeva, Zarema
name: Herzfeld, Thomas
name: Akhmadiyeva, Zarema
name: Herzfeld, Thomas
Publisher: name: Unknown
Year: 2021
Subjects: Land Economics/Use
Farm Management

description: Session ID 4767, Paper# 18663
Exclusive processes in $ep$ collisions at the EIC and LHeC: A closer look on the predictions of saturation models
Creators: name: Xie, Ya-Ping
name: Goncalves, Victor P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The exclusive production of vector mesons and photons in $ep$ collisions is investigated considering three phenomenological saturation models based on distinct assumptions for the treatment of the dipole - hadron scattering amplitude. The latest high precision HERA data for the reduced and vector meson cross sections are used to update the saturation model proposed by Marquet - Peschanski - Soyez (MPS), which predicts that the saturation model is dependent of the squared momentum transfer $t$. The MPS predictions for the photon virtuality, energy and $t$ - dependencies of the exclusive $ρ$, $J/Ψ$ and DVCS cross sections are presented and a detailed comparison with the results derived using the impact parameter saturation models is performed. Our results indicate that a future experimental analysis of the $t$ - distribution $dσ/dt$ for exclusive processes in the kinematical range that will covered by the EIC and LHeC, considering the distinct photon polarizations and large values of $t$, will be able to discriminate between the distinct approaches for the QCD dynamics at high energies.
description: 16 pages, 8 figures, 2 tables
The Non-equilibrium Behavior of Fluctuation Induced Forces
Creators: name: Dean, David S.
name: Gopinathan, Ajay
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: While techniques to compute thermal fluctuation induced, or pseudo-Casimir, forces in equilibrium systems are well established, the same is not true for non-equilibrium cases. We present a general formalism that allows us to unambiguously compute non-equilibrium fluctuation induced forces by specifying the energy of interaction of the fluctuating fields with the boundaries. For a general class of classical fields with dissipative dynamics, we derive a very general relation between the Laplace transform of the time-dependent force and the static partition function for a related problem with a different Hamiltonian. In particular, we demonstrate the power of our approach by computing, for the first time, the explicit time dependence of the non-equilibrium pseudo-Casimir force induced between two parallel plates, upon a sudden change in the temperature of the system. We also show how our results can be used to determine the steady-state behavior of the non-equilibrium force in systems where the fluctuations are driven by colored noise.
description: 4 pages RevTex, 2 .eps figures
Lesson Plan: Video peer-feedback
Creators: name: Fox, Bianca
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 390303
subject: Higher education
classificationCode: 390306
subject: Secondary education

description: Ready to use and easy to adapt lesson plan on providing peer-feedback.

The lesson plan contains a few ideas on how to discuss this topic with students and support them to use pre-recorded videos to provide peer-feedback. 

For access to other useful resources, please check out the MeLDE platform http://melde.iit.demokritos.gr and MeLDE website http://meldeproject.eu
Statistical Properties of the Population of the Galactic Center Filaments: The Spectral Index and Equipartition Magnetic Field
Creators: name: Yusef-Zadeh, F.
name: Arendt, R. G.
name: Wardle, M.
name: Heywood, I.
name: Cotton, W. D.
name: Camilo, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present high-pass filtered continuum images of the inner $3.5^\circ\times2.5^\circ$ of the Galactic center at 20 cm with $6.4''$ resolution. These mosaic images are taken with MeerKAT and reveal a large number of narrow filaments, roughly an order of magnitude increase in their numbers compared to past measurements. For the first time, we carry out population studies of the spectral index and magnetic field of the entire region. The mean spectral indices of the filaments are steeper than supernova remnants (SNRs) (-0.62) with a value of $α\sim-0.83$. The variation in $α$ is much larger than for the SNRs, suggesting that these characteristics have a different origin. A large-scale cosmic-ray driven wind has recently been proposed to explain the origin of filaments and the large-scale 430 pc bipolar radio and X-ray structure. This favors the possibility that the large-scale bipolar radio/X-ray structure is produced by past activity of Sgr A* rather than coordinated burst of supernovae. A trend of steeper indices is also noted with increasing distance from the Galactic plane. This could be explained either by synchrotron cooling or weak shocks accelerating cosmic-ray particles in the context of the cosmic-ray driven wind. The mean magnetic field strengths along the filaments ranges from $\sim100$ to 400 $μ$G depending on the assumed ratio of cosmic-ray protons to electrons. Given that there is a high cosmic ray pressure in the Galactic center, the large equipartition magnetic field implies that the magnetic field is weak in most of the interstellar volume of the Galactic center.
description: 15 pages, 9 figures, accepted for publication in Astrophysical Journal Letters
O homem que não se chamava Hemingway: Nova BD de Victor Mesquita
Creators: name: Gil, Francisco Baptista
Publisher: name: Zenodo
Year: 1995
Subjects: Banda Desenhada
Algarve
Bedelho

description: Página de análise e divulgação de Banda Desenhada, publicada no Semanário Regional "Algarve Região".
PROCEDURE AND CHARACTERISTICS OF INITIATING, PREPARING, AND TRIALING AN ECONOMIC CASE
Creators: name: Nabijonova, Dilafruz
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada O’zbekiston Respublikasi iqtisodiy sudlarida sud ishini qo‘zg‘atish va tayyorlash tartibi, ishni sudga tayyorlash, iqtisodiy ishni sudda muhokama qilish va o‘tkazish, sudning hal qiluv qarorini chiqarish tartibi  va xususiyati haqidagi mavzu yoritilgan.
Connecting curves for dynamical systems
Creators: name: Gilmore, R.
name: Ginoux, Jean-Marc
name: Jones, Timothy
name: Letellier, C.
name: Freitas, U. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We introduce one dimensional sets to help describe and constrain the integral curves of an $n$ dimensional dynamical system. These curves provide more information about the system than the zero-dimensional sets (fixed points) do. In fact, these curves pass through the fixed points. Connecting curves are introduced using two different but equivalent definitions, one from dynamical systems theory, the other from differential geometry. We describe how to compute these curves and illustrate their properties by showing the connecting curves for a number of dynamical systems.
description: 8 pages, 5 figures. Submitted to J. Phys. A.
High energy neutrinos from fast winds in Novae
Creators: name: Bednarek, W.
name: Śmiałkowski, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a scenario in which TeV neutrinos are produced during explosions of Novae. It is argued that hadrons are accelerated to very high energies in the inner part of a Nova wind, as a result of reconnection of the strong magnetic field of a White Dwarf. Hadrons are expected to interact efficiently with a dense matter of the wind, either already during the acceleration process or during their advection with the equatorial wind. We calculate the neutrino spectra, and estimate the muon neutrino event rates in the IceCube telescope, in the case of a few Novae. In general, those event rates are unlikely to be detected with the present neutrino detectors. However, for favourable location of the observer, some neutrino events might be detected not only from the class of Novae recently detected in the GeV $γ$-rays by the {\it Fermi}-LAT telescope but also from novae not detected in $γ$-rays. The GeV $γ$-ray emission observed from Novae cannot originate in terms of the model discussed here, since protons are accelerated within a few stellar radii of the White dwarf, i.e. in the region in which GeV $γ$-rays are expected to be severely absorbed in the interactions with the radiation field and the matter of the wind.
description: 17 pages, 2 figures, accepted to MNRAS
Access to Finance and Rural Youth Entrepreneurship in Benin: Is There a Gender Gap?
Creators: name: Senou, Melain Modeste
name: Manda, Julius
name: Senou, Melain Modeste
name: Manda, Julius
Publisher: name: Unknown
Year: 2021
Subjects: Agricultural Finance
Labor and Human Capital

description: Session ID 4732, Paper# 18672
Desingularization of vortices for the Euler equation
Creators: name: Smets, Didier
name: Van Schaftingen, Jean
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B25, 35J20, (35J65, 35R35, 76B47, 76M30)

description: We study the existence of stationary classical solutions of the incompressible Euler equation in the plane that approximate singular stationnary solutions of this equation. The construction is performed by studying the asymptotics of equation $-\eps^2 Δu^\eps=(u^\eps-q-\fracκ{2π} \log \frac{1}{\eps})_+^p$ with Dirichlet boundary conditions and $q$ a given function. We also study the desingularization of pairs of vortices by minimal energy nodal solutions and the desingularization of rotating vortices.
description: 40 pages
The structure of accreted stellar streams
Creators: name: Qian, Yansong
name: Arshad, Yumna
name: Bovy, Jo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Many of the Milky Way's globular clusters are likely accreted from satellite galaxies that have long since merged with the Milky Way. When these globular clusters are susceptible to tidal disruption, this process likely starts already inside the parent satellite leading to an early stellar stream within the satellite. When the parent satellite merges with the Milky Way, the globular cluster and its pre-merger stellar stream are accreted in a somewhat chaotic process. Here, we investigate the properties of the accreted stream after the merger as we would see it today using a suite of simulations of accretion events. We find that the accretion process leads to a wide range of behaviors, but generally scatters the accreted stream over a wide, two-dimensional area of the sky. The behavior ranges from a set of a few or more well-defined "sub-streams" extending out from the post-merger thin stream by tens of degrees, to more widely dispersed debris over much of the sky, depending on how close to the center of the MilkyWay the merger happened. Using mock Gaia-like observations of the simulated streams, we demonstrate that an accreted-stream component can explain the off-track features observed in the GD-1 stream. Sub-streams can appear like thin tidal streams themselves that are seemingly unassociated with the post-merger stream, raising the possibility that some of the progenitor-less streams observed in the Milky Way are part of a single or a few accreted streams created in an ancient merger event.
description: MNRAS, in press
Lesson Plan: Enhancing academic skills with technology
Creators: name: Fox, Bianca
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 390303
subject: Higher education
classificationCode: 390306
subject: Secondary education

description: Ready to use and easy to adapt lesson plan on using technology to support students gain/develop academic skills.

For access to other useful resources, please check out the MeLDE platform http://melde.iit.demokritos.gr and MeLDE website http://meldeproject.eu
Project Hephaistos I. Upper limits on partial Dyson spheres in the Milky Way
Creators: name: Suazo, Matías
name: Zackrisson, Erik
name: Wright, Jason T.
name: Korn, Andreas
name: Huston, Macy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Dyson spheres are hypothetical megastructures built by advanced extraterrestrial civilizations to harvest radiation energy from stars. Here, we combine optical data from Gaia DR2 with mid-infrared data from AllWISE to set the strongest upper limits to date on the prevalence of partial Dyson spheres within the Milky Way, based on their expected waste-heat signatures. Conservative upper limits are presented on the fraction of stars at G $\leq$ 21 that may potentially host non-reflective Dyson spheres that absorb 1 - 90$\%$ of the bolometric luminosity of their host stars and emit thermal waste-heat in the 100 - 1000 K range. Based on a sample of $\approx$ $2.7\mathrm{e}\,5$ stars within 100 pc, we find that a fraction less than $\approx$ $2\mathrm{e}\,-5$ could potentially host $\sim$300 K Dyson spheres at 90$\%$ completion. These limits become progressively weaker for less complete Dyson spheres due to increased confusion with naturally occurring sources of strong mid-infrared radiation, and also at larger distances, due to the detection limits of WISE. For the $\sim2.9\mathrm{e}\,8$ stars within 5 kpc in our Milky Way sample, the corresponding upper limit on the fraction of stars that could potentially be $\sim$300 K Dyson spheres at 90$\%$ completion is $\leq$ $8\mathrm{e}\,-4$.
description: Accepted for publication in MNRAS
The Deposition of High-Quality HfO2 on Graphene and the Effect of Remote Oxide Phonon Scattering
Creators: name: Zou, Ke
name: Hong, Xia
name: Keefer, Derek
name: Zhu, Jun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate the atomic layer deposition of high-quality HfO2 film on graphene and report the magnitude of remote oxide phonon (ROP) scattering in dual-oxide graphene transistors. Top gates with 30 nm HfO2 oxide layer exhibit excellent doping capacity of greater than 1.5x10^(13)/cm^(2). The carrier mobility in HfO2-covered graphene reaches 20,000 cm^(2)/Vs at low temperature, which is the highest among oxide-covered graphene and compares to that of pristine samples. The temperature-dependent resistivity exhibits the effect of ROP scattering from both the SiO2 substrate and the HfO2 over-layer. At room temperature, surface phonon modes of the HfO2 film centered at 54 meV dominate and limit the carrier mobility to ~20,000 cm^(2)/Vs. Our results highlight the important choice of oxide in graphene devices.
description: 12 pages, 5 figures and supporting materials
Dust and the intrinsic spectral index of quasar variations: hints of finite stress at the innermost stable circular orbit
Creators: name: Weaver, John R.
name: Horne, Keith
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a study of 9242 spectroscopically-confirmed quasars with multi-epoch ugriz photometry from the SDSS Southern Survey. By fitting a separable linear model to each quasar's spectral variations, we decompose their five-band spectral energy distributions into variable (disc) and non-variable (host galaxy) components. In modelling the disc spectra, we include attenuation by dust on the line of sight through the host galaxy to its nucleus. We consider five commonly used attenuation laws, and find that the best description is by dust similar to that of the Small Magellanic Cloud, inferring a lack of carbonaceous grains from the relatively weak 2175AA absorption feature. We go on to construct a composite spectrum for the quasar variations spanning 700 to 8000AA. By varying the assumed power-law $L_ν\proptoν^α$ spectral slope, we find a best-fit value $α=0.71\pm0.02$, excluding at high confidence the canonical $L_ν\proptoν^{1/3}$ prediction for a steady-state accretion disc with a $T\propto r^{-3/4}$ temperature profile. The bluer spectral index of the observed quasar variations instead supports the model of Mummery & Balbus in which a steeper temperature profile, $T\propto r^{-7/8}$, develops as a result of finite magnetically-induced stress at the innermost stable circular orbit extracting energy and angular momentum from the black hole spin.
description: 18 pages, 13 figures, accepted for publication in MNRAS
Additional file 1 of Importance of the 5’ untranslated region for recombinant enzyme production in isolated Bacillus subtilis 007
Creators: name: Senger, Jana
name: Schulz, Adriana
name: Seitl, Ines
name: Heider, Martin
name: Fischer, Lutz
Publisher: name: figshare
Year: 2025
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Hematology

description: Supplementary Material 1
Bangladeshi Consumers’ Willingness to Pay for Rice with Improved Nutrition Via Biofortified Zinc Rice and Decreased Milling Practices
Creators: name: Herrington, Caitlin L.
name: Maredia, Mywish
name: Ortega, David L.
name: Taleon, Victor
name: Birol, Ekin
name: Sarkar, Abdur Rouf
name: Herrington, Caitlin L.
name: Maredia, Mywish
name: Ortega, David L.
name: Taleon, Victor
name: Birol, Ekin
name: Sarkar, Abdur Rouf
Publisher: name: Unknown
Year: 2021
Subjects: Consumer/Household Economics
Crop Production/Industries

description: Session ID 4789, Paper# 18682
Non-star-forming molecular gas in the Abell 1367 intra-cluster multiphase orphan cloud
Creators: name: Jáchym, Pavel
name: Sun, Ming
name: Yagi, Masafumi
name: Ge, Chong
name: Luo, Rongxin
name: Combes, Françoise
name: Kabátová, Anežka
name: Kenney, Jeffrey D. P.
name: Scott, Tom C.
name: Brinks, Elias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of CO emission in the recently discovered multiphase isolated gas cloud in the nearby galaxy cluster Abell 1367. The cloud is located about 800 kpc in projection from the center of the cluster and at a projected distance of > 80 kpc from any galaxy. It is the first and the only known isolated intra-cluster cloud detected in X-ray, H$α$, and CO emission. We found a total of about $2.2\times 10^8 M_\odot$ of H$_2$ with the IRAM 30-m telescope in two regions, one associated with the peak of H$α$ emission and another with the peak of X-ray emission surrounded by weak H$α$ filaments. The velocity of the molecular gas is offset from the underlying H$α$ emission by > 100 km s$^{-1}$ in the region where the X-ray peaks. The molecular gas may account for about 10% of the total cloud's mass, which is dominated by the hot X-ray component. The previously measured upper limit on the star formation rate in the cloud indicates that the molecular component is in a non-star-forming state, possibly due to a combination of low density of the gas and the observed level of velocity dispersion. The presence of the three gas phases associated with the cloud suggests that gas phase mixing with the surrounding intra-cluster medium is taking place. The possible origin of the orphan cloud is a late evolutionary stage of a ram pressure stripping event. In contrast, the nearby ram pressure stripped galaxy 2MASX J11443212+2006238 is in an early phase of stripping and we detected about $2.4\times 10^9 M_\odot$ of H$_2$ in its main body.
description: Accepted for publication in A&A Letters
Model building by coset space dimensional reduction in ten-dimensions with direct product gauge symmetry
Creators: name: Jittoh, Toshifumi
name: Koike, Masafumi
name: Nomura, Takaaki
name: Sato, Joe
name: Shimomura, Takashi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate ten-dimensional gauge theories whose extra six-dimensional space is a compact coset space, $S/R$, and gauge group is a direct product of two Lie groups. We list up candidates of the gauge group and embeddings of $R$ into them. After dimensional reduction of the coset space,we find fermion and scalar representations of $G_{\mathrm{GUT}} \times U(1)$ with $G_{\mathrm{GUT}}=SU(5), SO(10)$ and $E_6$ which accomodate all of the standard model particles. We also discuss possibilities to generate distinct Yukawa couplings among the generations using representations with a different dimension for $G_{\mathrm{GUT}}=SO(10)$ and $E_6$ models.
description: 14 pages; added local report number, added refference
Gum 48d: an evolved HII region with ongoing star formation
Creators: name: Karr, J. L.
name: Manoj, P
name: Ohashi, N
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: High mass star formation and the evolution of HII regions have a substantial impact on the morphology and star formation history of molecular clouds. The HII region Gum 48d, located in the Centaurus Arm at a distance of 3.5 kpc, is an old, well evolved HII region whose ionizing stars have moved off the main sequence. As such, it represents a phase in the evolution of HII regions that is less well studied than the earlier, more energetic, main sequence phase. In this paper we use multi-wavelength archive data from a variety of sources to perform a detailed study of this interesting region. Morphologically, Gum 48d displays a ring-like faint HII region associated with diffuse emission from the associated PDR, and is formed from part of a large, massive molecular cloud complex. There is extensive ongoing star formation in the region, at scales ranging from low to high mass, which is consistent with triggered star formation scenarios. We investigate the dynamical history and evolution of this region, and conclude that the original HII region was once larger and more energetic than the faint region currently seen. The proposed history of this molecular cloud complex is one of multiple, linked generations of star formation, over a period of 10 Myr. Gum 48d differs significantly in morphology and star formation that the other HII regions in the molecular cloud; these differences are likely the result of the advanced age of the region, and its different evolutionary status.
description: 34 pages, 9 figures
"Feed the Mouth, the Eye Ashamed": Have Food Prices Triggered Social Unrest in Egypt?
Creators: name: Hatab, Assem Abu
name: Hess, Sebastian
name: Hatab, Assem Abu
name: Hess, Sebastian
Publisher: name: Unknown
Year: 2021
Subjects: Demand and Price Analysis

description: Session ID 4784, Paper# 18687
The Comparative Legitimacy of Arms Exports
Creators: name: Rudolph, Lukas
name: Thurner, Paul
name: Freitag, Markus
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: arms trade
subject: foreign policy
subject: France
subject: Germany
subject: norms
subject: preferences
subject: public opinion
subject: survey experiment
subject: weapons

description: Despite significant politicization and heated public debates in some major exporting countries, systematic research on public support for arms trade is currently lacking. Combining political economic models of arms trade with the literatures on trade preferences and foreign policy attitudes, we expect preferences of citizens over arms trade policy to exhibit trade-offs: economic incentives, as well as expected security risks are pitted against moral considerations. In order to derive the often implicit weighting between different features of the attitudinal object at the level of citizens, we draw on a population-representative survey with embedded experiments (approx. N=6000), fielded in November/December 2020 with a quota-representative opt-in online panel of Kantar. We focus on the cases of two global top-5 exporting countries of major arms: Germany and France. This pre-analysis plan presents an overview on our general theoretical framing as well as the hypotheses and related causal quantities of interest we seek to investigate. Further, the experimental design, operationalizations and sample characteristics as well as power analyses are presented in detail.
Hydrogen-induced disintegration of fullerenes and nanotubes: An ab initio study
Creators: name: Berber, Savas
name: Tomanek, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use ab initio density functional calculations to study hydrogen-induced disintegration of single- and multi-wall carbon fullerenes and nanotubes. Our results indicate that hydrogen atoms preferentially chemisorb along lines in sp2 bonded carbon nanostructures, locally weakening the carbon bonds and releasing stress. For particular structural arrangements, hydrogen helps to relieve the accumulated stress by inducing step-wise local cleavage leading to disintegration of the outermost wall.
Classifying IGR J18007-4146 as an intermediate polar using XMM and NuSTAR
Creators: name: Coughenour, Benjamin M.
name: Tomsick, John A.
name: Shaw, Aarran W.
name: Mukai, Koji
name: Clavel, Maïca
name: Hare, Jeremy
name: Krivonos, Roman
name: Fornasini, Francesca M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Many new and unidentified Galactic sources have recently been revealed by ongoing hard X-ray surveys. A significant fraction of these have been shown to be the type of accreting white dwarfs known as cataclysmic variables (CVs). Follow-up observations are often required to categorize and classify these sources, and may also identify potentially unique or interesting cases. One such case is IGR J18007-4146, which is likely a CV based on follow-up Chandra observations and constraints from optical/IR catalogs. Utilizing simultaneous XMM-Newton and NuSTAR observations, as well as the available optical/IR data, we confirm the nature of IGR J18007-4146 as an intermediate polar type CV. Timing analysis of the XMM data reveals a periodic signal at 424.4 +/- 0.7 s that we interpret as the spin period of the white dwarf. Modeling the 0.3-78 keV spectrum, we use a thermal bremsstrahlung continuum but require intrinsic absorption as well as a soft component and strong Fe lines between 6 and 7 keV. We model the soft component using a single-temperature blackbody with kT = 73 +8/-6 eV. From the X-ray spectrum, we are able to measure the mass of the white dwarf to be 1.06 +0.19/-0.10 Msun, which means IGR J18007-4146 is more massive than the average for magnetic CVs.
description: 9 pages, accepted for publication in MNRAS
Cuestionario para la evaluación de un proyecto educativo universitario para el desarrollo sostenible
Creators: name: García Reynaud, Javier Adolfo
Publisher: name: figshare
Year: 2023
Subjects: Environmental education curriculum and pedagogy
Education assessment and evaluation

description: Se trata del cuestionario utilizado para el estudio "Metodología para la evaluación de un proyecto educativo universitario para el desarrollo sostenible" en que se basa un artículo de investigación publicado en Paradigma: Revista de Investigación Educativa 27(43):9-30. DOI: 10.5377/paradigma.v27i43.9874 LicenseCC BY-NC-ND 4.0.
Spectral libraries and their uncertainties
Creators: name: Coelho, Paula
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Libraries of stellar spectra are fundamental tools in the study of stellar populations and in automatic determination of atmospheric parameters for large samples of observed stars. In the context of the present volume, here I give an overview of the current status of stellar spectral libraries from the perspective of stellar population modeling: what we have currently available, how good they are, and where we need further improvement.
Defect Conformal Blocks from Appell Functions
Creators: name: Buric, Ilija
name: Schomerus, Volker
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020
Subjects: * Automatic Keywords *
defect: conformal
field theory: conformal
field theory: scalar
symmetry: conformal
n-point function: 3
correlation function
conformal block

description: We develop a group theoretical formalism to study correlation functions in defect conformal field theory, with multiple insertions of bulk and defect fields. This formalism is applied to construct the defect conformal blocks for three-point functions of scalar fields. Starting from a configuration with one bulk and one defect field, for which the correlation function is determined by conformal symmetry, we explore two possibilities, adding either one additional defect or bulk field. In both cases it is possible to express the blocks in terms of classical hypergeometric functions, though the case of two bulk and one defect field requires Appell's function $F_4$.
A Region of Violent Star Formation in the Irr Galaxy IC 10: Structure and Kinematics of Ionized and Neutral Gas
Creators: name: Egorov, O. V.
name: Lozinskaya, T. A.
name: Moiseev, A. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have used observations of the galaxy IC 10 at the 6-m telescope of the Special Astrophysical Observatory with the SCORPIO focal reducer in the Fabry-Perot interferometer mode and with the MPFS spectrograph to study the structure and kinematics of ionized gas in the central region of current intense star formation. Archive VLA 21-cm observations are used to analyze the structure and kinematics of neutral gas in this region. High-velocity wings of the H-alpha and [SII] emission lines were revealed in the inner cavity of the nebula HL 111 and in other parts of the complex of violent star formation. We have discovered local expanding neutral-gas shells around the nebulae HL 111 and HL 106.
description: 22 pages, 10 figures; accepted in Astronomy Reports
Irrigation Governance, Private Investment, and Agricultural Productivity in India
Creators: name: Bathla, Seema
name: Kumar, Anjani
name: Elumalai, K.
name: Saroj, Sunil
name: Bathla, Seema
name: Kumar, Anjani
name: Elumalai, K.
name: Saroj, Sunil
Publisher: name: Unknown
Year: 2021
Subjects: Agricultural and Food Policy
Productivity Analysis

description: Session ID 4740, Paper# 18691
Individual element sensitivity for stellar evolutionary isochrones
Creators: name: Worthey, Guy
name: Shi, Xiang
name: Pal, Tathagata
name: Lee, Hyun-chul
name: Tang, Baitian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stellar evolution calculations with variable abundance ratios were used to gauge the effects on temperatures, luminosities, and lifetimes in various phases. Individual elements C, N, O, Mg, Si, and Fe were included. Most of the effect relevant to integrated light models is contained in the temperature variable, as opposed to the timescale or luminosity. We derive a recipe for including abundance-sensitive temperature effects that is applicable to existing isochrone grids. The resultant enhanced isochrones are incorporated into composite stellar population models and compared with galaxy data from the Sloan Digital Sky Survey. A severe oxygen-age degeneracy is apparent, 2 - 3 Gyr per 0.1 dex in [O/R], where R represents a heavy element such as Fe. Over the range of early-type galaxy velocity dispersion, the spans of all abundance ratios are reduced but the age range increases, systematically older. Allowing Fe-peak elements the freedom to vary accentuates this increase of age span. Overall, these results sharpen the age-mass correlation known as downsizing but decrease the steepness of abundance ratio gradients. Both of these observations, in turn, imply a more robust contribution from gas free mergers in the histories of typical elliptical galaxies.
description: 10 pages, 12 figures, 4 tables, accepted to MNRAS, 2022 Jan 26
Correlated orientations of the axes of large quasar groups on Gpc scales
Creators: name: Friday, Tracey
name: Clowes, Roger G.
name: Williger, Gerard M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Correlated orientations of quasar optical and radio polarisation, and of radio jets, have been reported on Gpc scales, possibly arising from intrinsic alignment of spin axes. Optical quasar polarisation appears to be preferentially either aligned or orthogonal to the host large-scale structure, specifically large quasar groups (LQGs). Using a sample of 71 LQGs at redshifts $1.0 \leq z \leq 1.8$, we investigate whether LQGs themselves exhibit correlated orientation. We find that LQG position angles (PAs) are unlikely to be drawn from a uniform distribution ($p$-values $0.008 \lesssim p \lesssim 0.07$). The LQG PA distribution is bimodal, with median modes at $\barθ\sim45\pm2^{\circ}, 136\pm2^{\circ}$, remarkably close to the mean angles of quasar radio polarisation reported in two regions coincident with our LQG sample. We quantify the degree of alignment in the PA data, and find that LQGs are aligned and orthogonal across very large scales. The maximum significance is $\simeq 0.8\%$ ($2.4σ$) at typical angular (proper) separations of $\sim 30^{\circ}$ (1.6 Gpc). If the LQG orientation correlation is real, it represents large-scale structure alignment over scales larger than those predicted by cosmological simulations and at least an order of magnitude larger than any so far observed, with the exception of quasar-polarisation / radio-jet alignment. We conclude that LQG alignment helps explain quasar-polarisation / radio-jet alignment, but raises challenging questions about the origin of the LQG correlation and the assumptions of the concordance cosmological model.
description: Accepted for MNRAS
Effects of Renting-in Cropland on Machinery Use Intensity and Land Productivity: Evidence from Rural China
Creators: name: Zheng, Hongyun
name: Ma, Wanglin
name: Zhou, Xiaoshi
name: Zheng, Hongyun
name: Ma, Wanglin
name: Zhou, Xiaoshi
Publisher: name: Unknown
Year: 2021
Subjects: Land Economics/Use
Productivity Analysis

description: Session ID 4767, Paper# 18692