cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Molecular gas filaments and fallback in the ram pressure stripped Coma spiral NGC 4921
Creators: name: Cramer, William J.
name: Kenney, Jeffrey D. P.
name: Tonnesen, Stephanie
name: Smith, Rory
name: Wong, Tony
name: Jáchym, Pavel
name: Cortés, Juan R.
name: Cortés, Paulo C.
name: Wu, Yu-Ting
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the effects of ram pressure on the molecular ISM in the disk of the Coma cluster galaxy NGC 4921, via high resolution CO observations. We present 6" resolution CARMA CO(1-0) observations of the full disk, and 0.4" resolution ALMA CO(2-1) observations of the leading quadrant, where ram pressure is strongest. We find evidence for compression of the dense interstellar medium (ISM) on the leading side, spatially correlated with intense star formation activity in this zone. We also detect molecular gas along kiloparsec-scale filaments of dust extending into the otherwise gas stripped zone of the galaxy, seen in HST images. We find the filaments are connected kinematically as well as spatially to the main gas ridge located downstream, consistent with cloud decoupling inhibited by magnetic binding, and inconsistent with a simulated filament formed via simple ablation. Furthermore, we find several clouds of molecular gas $\sim 1-3$ kpc beyond the main ring of CO that have velocities which are blueshifted by up to 50 km s$^{-1}$ with respect to the rotation curve of the galaxy. These are some of the only clouds we detect that do not have any visible dust extinction associated with them, suggesting that they are located behind the galaxy disk midplane and are falling back towards the galaxy. Simulations have long predicted that some gas removed from the galaxy disk will fall back during ram pressure stripping. This may be the first clear observational evidence of gas re-accretion in a ram pressure stripped galaxy.
description: 27 pages, 14 figures. Accepted for publication in ApJ on July 24, 2021
Rhoptropus boultoni subsp. boultoni Schmidt 1933
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Rhoptropus
Rhoptropus boultoni
Rhoptropus boultoni boultoni schmidt, 1933

description: BOULTON’S NAMIB DAY GECKO – Fig. 10
Rhoptropus boultoni boultoni Schmidt, 1933
MATERIAL.— INP, 3.4 km southwest (by air) of Espinheira, vicinity of “Lion Cave”, 30 November 2013, 16º48ʹ73.5ʺS, 12º20ʹ23.2ʺE, 463 m (CAS 254752); Approximately 7.35 km north-west (by road) of Pico Azevedo, 7 December 2013, 15º28ʹ33.2ʺS, 12º27ʹ45.7ʺE, 421 m (CAS 254757–254758); Espinheira, 16º47ʹ29.4ʺS, 12º21ʹ6.06ʺE, 457 m (CAS 254795); Omauha Lodge, 28 November 2013, 16º11ʹ52.5ʺS, 12º23ʹ59.3ʺE, 335 m (CAS 254828, 2 December 2013, 16º12ʹ1.2ʺS, 12º24ʹ0.1ʺE, 343 m (CAS 254834); INP, Rio Curoca crossing, south side of river, 1 December 2013, 16º18ʹ14.7ʺS, 12º25ʹ0.0ʺE, 210 m (CAS 254849–254850), 2 nd December 2013, 16º17ʹ19.7ʺS, 12º33ʹ40.0ʺE, 244 m (CAS 254857–254858, CAS 254861–254862), 29 November 2013, 16º18ʹ15.6ʺS, 12º25ʹ1.56ʺE, 209 m (CAS 254865); Leba Pass, between river and highway, 5 December 2013, 15º4ʹ13.2ʺS, 13º14ʹ37.7ʺE, 1676 m (CAS 254880); Namibe-Lubango road, 2.0 km east (by road) of Mangueiras, south side of the road, 5 December 2013, 15º2ʹ40.8ʺS, 13º9ʹ32.6ʺE, 664 m (CAS 254892), 15º2ʹ40.7ʺS, 13º9ʹ31ʺE, 640 m (CAS 254894, 15º0ʹ55.1ʺS, 12º38ʹ32.8ʺE, 497 m (CAS 254902); Namibe-Lubango road, road marker 59, 1.8 km west by road of Caraculo, 6 December 2013, 15º00ʹ55.1ʺS, 12º38ʹ32.8ʺE, 497 m (CAS 254903); Pico Azevedo, 7 December 2013, 15º32ʹ2.4ʺS, 12º29ʹ31.1ʺE, 359 m (CAS 254921–254926), 15º32ʹ5.8ʺS. 12º29ʹ29.5ʺE, 366 m (CAS 254946–254947, CAS 254949–254950); Espinheira, 29 November 2013, 16º47ʹ20.2ʺS, 12º21ʹ27.9ʺE, 457 m (CAS 254958).
COMMENTS.— This taxon is widespread from northwestern Namibia north at least to northern Namibe Province.
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on pages 28-29, DOI: 10.5281/zenodo.11066801
Rhoptropus boultoni subsp. montanus Laurent 1964
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Rhoptropus
Rhoptropus boultoni
Rhoptropus boultoni montanus laurent, 1964

description: MONTANE NAMIB DAY GECKO
Rhoptropus boultoni montanus Laurent, 1964
MATERIAL.— Leba Pass overlook, 5 December 2013, 15º4ʹ37.2ʺS, 13º13ʹ58.5ʺE, 1682 m (CAS 254866, CAS 254867; 15º4ʹ38.3ʺS, 13º13´57.0ʺE, 1682 m (CAS 254868); 15º4ʹ36.0ʺS, 13º14ʹ1.6ʺE, 1682 m (CAS 254869–254872); Leba Pass, between river and highway, 15º04ʹ13.2ʺ S, 13º14ʹ37.3ʺE, 1676 m (CAS 254882).
COMMENTS.— The subspecies was described from the Leba Escarpment (“ 60 km on the road to Moçâmedes [now Namibe, Namibe Province] from Sá da Bandeira [now Lubango, Huila Province]”, Laurent 1964a). A large series of specimens in the Ditsong National Museum of Natural History are derived from localities near Lubango, in Huila. Our specimens are topotypical and were collected on the Namibe side of the provincial boundary. Specimens were found basking on high elevation granite rocks covered with bryophytes. Molecular phylogenetic studies (A. Kuhn, unpublished) reveal that this taxon is specifically distinct from R. boultoni. Its formal elevation to specific status will be justified in detail elsewhere.
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on page 29, DOI: 10.5281/zenodo.11066801
Production at High $p_T$ in Central Au+Au and $p+p$ collisions at $\sqrt{s_{_{NN}}} = 200$ GeV in STAR
Creators: name: Fachini, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: he $ρ^0$ production at high-$p_T$ (5.0 $\leq p_T \leq$ 10.0 GeV/$c$) measured in minimum bias $p+p$, Au+Au and central Au+Au collisions in the STAR detector are presented. The $ρ^0/π$ ratio measured in $p+p$ is compared to PYTHIA calculations as a test of perturbative quantum chromodynamics (pQCD) that describes reasonably well particle production from hard processes. The $ρ^0$ nuclear modification factor are also presented. In $p+p$ collisions, charged pions and (anti-)protons are measured in the range 5.0 $\leq p_T \leq$ 15.0 GeV/$c$ and the anti-particle to particle ratio and the baryon to meson ratios of these hadrons are discussed.
description: 4 pages, 8 figures, proccedings for QM2008
The End of Amnesia: A New Method for Measuring the Metallicity of Type Ia Supernova Progenitors Using Manganese Lines in Supernova Remnants
Creators: name: Badenes, Carles
name: Bravo, Eduardo
name: Hughes, John P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a new method to measure the metallicity of Type Ia supernova progenitors using Mn and Cr lines in the X-ray spectra of young supernova remnants. We show that the Mn to Cr mass ratio in Type Ia supernova ejecta is tightly correlated with the initial metallicity of the progenitor, as determined by the neutron excess of the white dwarf material before thermonuclear runaway. We use this correlation, together with the flux of the Cr and Mn Kalpha X-ray lines in the Tycho supernova remnant recently detected by Suzaku (Tamagawa et al. 2008) to derive a metallicity of log(Z) = -1.32 (+0.67,-0.33) for the progenitor of this supernova, which corresponds to log(Z/Zsun)= 0.60 (+0.31,-0.60) according to the latest determination of the solar metallicity by Asplund et al. (2005). The uncertainty in the measurement is large, but metallicities much smaller than the solar value can be confidently discarded. We discuss the implications of this result for future research on Type Ia supernova progenitors.
description: 5 pages, 4 figures, accepted by ApJL
Twistor Actions for Self-Dual Supergravities
Creators: name: Mason, Lionel J.
name: Wolf, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give holomorphic Chern-Simons-like action functionals on supertwistor space for self-dual supergravity theories in four dimensions, dealing with N=0,...,8 supersymmetries, the cases where different parts of the R-symmetry are gauged, and with or without a cosmological constant. The gauge group is formally the group of holomorphic Poisson transformations of supertwistor space where the form of the Poisson structure determines the amount of R-symmetry gauged and the value of the cosmological constant. We give a formulation in terms of a finite deformation of an integrable \dbar-operator on a supertwistor space, i.e., on regions in CP^{3|8}. For N=0, we also give a formulation that does not require the choice of a background.
description: v2: 29 pages, substantially revised and rewritten with a clearer and more complete treatment, an extra 8 pages, replaced with version to appear in CMP
Trachylepis hoeschi
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Scincidae
Trachylepis
Trachylepis hoeschi

description: HOESCH’S SKINK – Fig. 13
Trachylepis hoeschi (Mertens, 1954)
MATERIAL.— Rio Curoca in the Pediva Hot Springs area, 2 December 2013, 16º17ʹ0.93ʺS, 12º33ʹ39.81ʺE, 247 m (CAS 254851); NNP, 15º46ʹ25.9ʺS, 12º19ʹ59.0ʺE, 247 m (CAS 254952).
COMMENTS.— The only published Angolan record is from Laurent (1964a), from “Plage das Conchas,” Namibe Province. Our specimens are, respectively, 75 and 135 km SE of Laurent’s site. the Ditsong National Natural History Museum holds a small series of this species (TM 40733–37) from Iona National Park. The Angolan records extend the core distribution of its range in northwestern Namibia (Branch 1998).
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on page 32, DOI: 10.5281/zenodo.11066801
Fungal endophyte Acremonium alternatum helps to mitigate biotic and abiotic stress in plants
Creators: name: Auer, Susann
Publisher: name: Zenodo
Year: 2019
Subjects: biocontrol
fungal pathogen
clubroot Plasmodiophora brassicae
endophyte
stress

description: This poster was presented during the 7th Plant Genomics and Gene Editing Congress: Europe 21-22 May 2019.

ABSTRACT

Background: Biocontrol agents and beneficial microbes are used in integrated pest management and help to secure crop yields without negative effects on the environment. Endophytic microbes can increase the stress tolerance of their host plants and enhance host performance against pathogens. Reports from the last decades indicate that the endophytic fungus Acremonium alternatum can control foliar pathogens (mildew, tar spot) but the mechanism behind this was not clear.

Research question:

Our goals were to (1) identify the molecular mechanisms behind the biocontrol action of A. alternatum against root and leaf pathogens and (2) assess general plant performance with the endophyte under stress conditions.

Results:

For the root pathogen Plasmodiophora brassicae (clubroot) we found that A. alternatum reduced clubroot symptoms by 30%. The endophyte established systemic acquired resistance in clubroot-infected roots and delayed pathogen development. In addition, the fungus enhanced reproductive success and survival of clubroot-inoculated plants. For the foliar pathogen Botrytis cinerea (grey mould) we found that A. alternatum reduced lesion size by 50 % and 70 % when applied on leaves directly or indirectly through soil. The endophyte also increased salt stress tolerance in plants grown in axenic culture.

Outlook: We started to look at performance of specific crops (oilseed rape, tomato, wheat, corn) for their response to A. alternatum under stress conditions. For the near future we look for solutions to (1) further elucidate which molecular markers are crucial for the biocontrol effect of the fungus against pathogens using RNAseq and –omics techniques, (2) acquire funding and cooperation partners to carry out field-trial like experiments with natural soils to confirm our findings from greenhouse trials, (3) find partners interested to develop with us a formulation for a crop-suitable application of this fungus.
The Magellanic Stream at 20 kpc: A New Orbital History for the Magellanic Clouds
Creators: name: Lucchini, Scott
name: D'Onghia, Elena
name: Fox, Andrew J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new simulations of the formation of the Magellanic Stream based on an updated first-passage interaction history for the Magellanic Clouds, including both the Galactic and Magellanic Coronae and a live dark matter halo for the Milky Way. This new interaction history is needed because previously successful orbits need updating to account for the Magellanic Corona and the loosely bound nature of the Magellanic Group. These orbits involve two tidal interactions over the last 3.5 Gyrs and reproduce the Stream's position and appearance on the sky, mass distribution, and velocity profile. Most importantly, our simulated Stream is only $\sim$20 kpc away from the Sun at its closest point, whereas previous first-infall models predicted a distance of $100-200$ kpc. This dramatic paradigm shift in the Stream's 3D position would have several important implications. First, estimates of the observed neutral and ionized masses would be reduced by a factor of $\sim$5. Second, the stellar component of the Stream is also predicted to be $
description: 11 pages, 4 figures. Published in ApJL at https://iopscience.iop.org/article/10.3847/2041-8213/ac3338. Movies and interactive figures available at https://github.com/DOnghiaGroup/lucchini-2021-movies
Trachylepis occidentalis
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Scincidae
Trachylepis
Trachylepis occidentalis

description: WESTERN THREE-STRIPED SKINK
Trachylepis occidentalis (Peters, 1867)
MATERIAL.— Pico Azevedo, 7 December 2013, 15º32ʹ2.4ʺS, 12º29ʹ31.1ʺE, 359 m (CAS 254931).
COMMENTS.— The species has been cited from 35 km south of the city of Namibe (Laurent 1964a) and from Curoca River (Bocage 1895). Three specimens in the Ditsong Natural National History Museum originate from the Rio Curoca mouth and from Namibe. In addition to our specimen from Pico Azevedo several individuals of the species were observed near Espinheira camp (specimens not collected). In Angola this skink takes refuge in holes it digs in the sand at the base of spiny shrubs of the genus Blepharis. It is widely distributed in western South Africa and much of central and western Namibia (Branch 1988).
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on pages 33-34, DOI: 10.5281/zenodo.11066801
Pedioplanis benguellensis
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Lacertidae
Pedioplanis
Pedioplanis benguellensis

description: BENGUELA SAND LIZARD
Pedioplanis benguellensis (Bocage, 1867)
MATERIAL.— Namibe-Lubango road, road marker 59, 1.8 km W (by road) from Caraculo, north side of the road, 6 December 2013, 15º00ʹ57.8ʺS, 13º38ʹ41.4ʺE, 476 m (CAS 254909), 15º00ʹ58.8ʺS, 13º38ʹ33.8ʺE, 491 m (CAS 254906), 15º00ʹ57.5ʺS, 12º38ʹ38.3ʺE, 482 m (CAS 254896).
COMMENTS.— All of these specimens have ten to eleven longitudinal series of ventral plates and a single transparent scale in the lower eyelid. However, they also have two rows of granules separating supraoculars from supraciliaries, a character given by Conradie et al. (2012) as synapomorphic for P. haackei. The number of upper labials in front of the subocular is variable: CAS 254896 has three, CAS 254906 has five, and CAS 254909 has four. Molecular comparisons with specimens of P. benguellensis from Conradie et al. (2012) show these specimens to be conspecific (average uncorrected 16S p-distance of 1% from our specimens [GenBank accession numbers KU662319 to KU662321] from those of Conradie et al. [2012] [GenBank accession numbers HE794014.1, HE794012.1, HE794011.1, HE794010.1 and HE794013.1]).
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on page 37, DOI: 10.5281/zenodo.11066801
The Evolution Of Carbon, Sulphur, and Titanium Isotopes from High-Redshift to the Local Universe
Creators: name: Hughes, G. L.
name: Gibson, B. K.
name: Carigi, L.
name: Sanchez-Blazquez, P.
name: Chavez, J. M.
name: Lambert, D. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent observations of carbon, sulphur, and titanium isotopes at redshifts z~1 and in the local stellar disc and halo have opened a new window into the study of isotopic abundance patterns and the origin of the chemical elements. Using our Galactic chemical evolution code GEtool, we have examined the evolution of these isotopes within the framework of a Milky Way-like system. We have three aims in this work: first, to test the claim that novae are required, in order to explain the carbon isotope patterns in the Milky Way; second, to test the claim that sulphur isotope patterns at high-redshift require an initial mass function biased towards massive stars; and third, to test extant chemical evolution models against new observations of titanium isotopes that suggest an anti-correlation between trace-to-dominant isotopes with metallicity. Based upon our dual-infall galactic chemical evolution modelling of a Milky Way-like system, and the subsequent comparison with these new and unique datasets, we conclude the following: novae are not required to understand the evolution of 12C/13C in the solar neighbourhood; a massive star-biased initial mass function is consistent with the low ratios of 12C/13C and 32S/34S seen in one high-redshift late-type spiral, but the consequent super-solar metallicity prediction for the interstellar medium in this system seems highly unlikely; and deficient isotopes of titanium are predicted to correlate positively with metallicity, in apparent disagreement with the new datasets; if confirmed, classical chemical evolution models of the Milky Way (and the associated supernovae nucleosynthetic yields) may need a substantial overhaul to be made consistent.
description: 11 pages, 9 figures. Minor changes to match the accepted version
Empirical assessment of cosmic ray propagation in magnetized molecular cloud complexes
Creators: name: Owen, Ellis R.
name: On, Alvina Y. L.
name: Lai, Shih-Ping
name: Wu, Kinwah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Molecular clouds are complex magnetized structures, with variations over a broad range of length scales. Ionization in dense, shielded clumps and cores of molecular clouds is thought to be caused by charged cosmic rays (CRs). These CRs can also contribute to heating the gas deep within molecular clouds, and their effect can be substantial in environments where CRs are abundant. CRs propagate predominantly by diffusion in media with disordered magnetic fields. The complex magnetic structures in molecular clouds therefore determine the propagation and spatial distribution of CRs within them, and hence regulate their local ionization and heating patterns. Optical and near-infrared (NIR) polarization of starlight through molecular clouds is often used to trace magnetic fields. The coefficients of CR diffusion in magnetized molecular cloud complexes can be inferred from the observed fluctuations in these optical/NIR starlight polarisations. Here, we present calculations of the expected CR heating patterns in the star-forming filaments of IC 5146, determined from optical/NIR observations. Our calculations show that local conditions give rise to substantial variation in CR propagation. This affects the local CR heating power. Such effects are expected to be severe in star-forming galaxies rich in CRs. The molecular clouds in these galaxies could evolve differently to those in galaxies where CRs are less abundant.
description: Presented at the 37th International Cosmic Ray Conference (ICRC 2021). 8 pages, 2 figures, 1 table
Criteria for Core-Collapse Supernova Explosions by the Neutrino Mechanism
Creators: name: Murphy, Jeremiah W.
name: Burrows, Adam
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the criteria for successful core-collapse supernova explosions by the neutrino mechanism. We find that a critical-luminosity/mass-accretion-rate condition distinguishes non-exploding from exploding models in hydrodynamic one-dimensional (1D) and two-dimensional (2D) simulations. We present 95 such simulations that parametrically explore the dependence on neutrino luminosity, mass accretion rate, resolution, and dimensionality. While radial oscillations mediate the transition between 1D accretion (non-exploding) and exploding simulations, the non-radial standing accretion shock instability characterizes 2D simulations. We find that it is useful to compare the average dwell time of matter in the gain region with the corresponding heating timescale, but that tracking the residence time distribution function of tracer particles better describes the complex flows in multi-dimensional simulations. Integral quantities such as the net heating rate, heating efficiency, and mass in the gain region decrease with time in non-exploding models, but for 2D exploding models, increase before, during, and after explosion. At the onset of explosion in 2D, the heating efficiency is $\sim$2% to $\sim$5% and the mass in the gain region is $\sim$0.005 M$_{\sun}$ to $\sim$0.01 M$_{\sun}$. Importantly, we find that the critical luminosity for explosions in 2D is $\sim$70% of the critical luminosity required in 1D. This result is not sensitive to resolution or whether the 2D computational domain is a quadrant or the full 180$^{\circ}$. We suggest that the relaxation of the explosion condition in going from 1D to 2D (and to, perhaps, 3D) is of a general character and is not limited by the parametric nature of this study.
description: 32 pages in emulateapj, including 17 figures, accepted for publication in ApJ, included changes suggested by the referee
WiP Abstract : Robust Out-of-distribution Motion Detection and Localization in Autonomous CPS
Creators: name: Feng, Yeli
name: Easwaran, Arvind
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Highly complex deep learning models are increasingly integrated into modern cyber-physical systems (CPS), many of which have strict safety requirements. One problem arising from this is that deep learning lacks interpretability, operating as a black box. The reliability of deep learning is heavily impacted by how well the model training data represents runtime test data, especially when the input space dimension is high as natural images. In response, we propose a robust out-of-distribution (OOD) detection framework. Our approach detects unusual movements from driving video in real-time by combining classical optic flow operation with representation learning via variational autoencoder (VAE). We also design a method to locate OOD factors in images. Evaluation on a driving simulation data set shows that our approach is statistically more robust than related works.
A setup for studies of photoelectron circular dichroism from chiral molecules in aqueous solution
Creators: name: Malerz, Sebastian
name: Haak, Henrik
name: Trinter, Florian
name: Stephansen, Anne B.
name: Kolbeck, Claudia
name: Pohl, Marvin
name: Hergenhahn, Uwe
name: Meijer, Gerard
name: Winter, Bernd
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a unique experimental design that enables the measurement of photoelectron circular dichroism (PECD) from chiral molecules in aqueous solution. The effect is revealed from the intensity difference of photoelectron emission into a backward-scattering angle relative to the photon propagation direction when ionizing with circularly polarized light of different helicity. This leads to asymmetries (normalized intensity differences) that depend on the handedness of the chiral sample and exceed the ones in conventional dichroic mechanisms by orders of magnitude. The asymmetry is largest for photon energies within several electron volts above the ionization threshold. A primary aim is to explore the effect of hydration on PECD. The modular and flexible design of our experimental setup EASI (Electronic structure from Aqueous Solutions and Interfaces) also allows for detection of more common photoelectron angular distributions (PADs), requiring distinctively different detection geometries, and typically using linearly polarized light. A microjet is used for liquid-sample delivery. We describe EASI's technical features and present two selected experimental results, one based on synchrotron-light measurements and the other performed in the laboratory, using monochromatized He-II $α$ radiation. The former demonstrates the principal effectiveness of PECD detection, illustrated for prototypic gas-phase fenchone. We also discuss the first data from liquid fenchone. In the second example we present valence photoelectron spectra from liquid water and NaI aqueous solution, here obtained from a planar-surface microjet (flatjet). This new development features a more favorable symmetry for angle-dependent photoelectron measurements.
description: 35 pages, 10 figures
Prof. Martin Wolfe, the farmers Darwin The story of Wakelyns Agroforestry and decentralised food and energy production
Creators: name: Westaway, Sally
name: Smith, Jo
Publisher: name: Zenodo
Year: 2019
Subjects: agroforestry; inspiration; functional biodiversity

description: Poster presented at the 4th World Agroforestry Congress in Montpellier on 20-22 May 2019. This poster pays tribute to Professor Martin Wolfe, who passed away in early 2019. Martin was a pioneer in plant breeding and agroforestry, and established a highly innovative, integrated and organic agroforestry farm in Suffolk, eastern England.Based on his experiences in plant pathology, Martin firmly believed that the future of sustainable agriculture was routed in Darwinian evolutionary processes, where adaptation to the agricultural abiotic and biotic environment leads to increases in overall productivity and resilience1. By moving away from the industrialised monoculture approach towards polycultures with
major increases both within and among crops, trees and livestock, Martin's work produced evidence, and practical experience, of the overall productivity, biodiversity and environmental gains when modern knowledge and techniques in ecology and genetics are applied at all levels.
Probing Non-Standard Neutrino Interactions with Neutrino Factories
Creators: name: Ribeiro, N. Cipriano
name: Minakata, H.
name: Nunokawa, H.
name: Uchinami, S.
name: Funchal, R. Zukanovich
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss the sensitivity reach of a neutrino factory measurement to non-standard neutrino interactions (NSI), which may exist as a low-energy manifestation of physics beyond the Standard Model. We use the muon appearance mode ν_e --> ν_μand consider two detectors, one at 3000 km and the other at 7000 km. Assuming the effects of NSI at the production and the detection are negligible, we discuss the sensitivities to NSI and the simultaneous determination of θ_{13} and δby examining the effects in the neutrino propagation of various systems in which two NSI parameters ε_{αβ} are switched on. The sensitivities to off-diagonal ε's are found to be excellent up to small values of θ_{13}. We demonstrate that the two-detector setting is powerful enough to resolve the θ_{13}-NSI confusion problem. We believe that the results obtained in this paper open the door to the possibility of using neutrino factory as a discovery machine for NSI while keeping its primary function of performing precision measurements of the lepton mixing parameters.
description: 47 pages, 22 figures. Color version of Figs. 18, 19 and 22 can be found in the article published in JHEP
Neutron$-^{19}$C scattering near an Efimov state
Creators: name: Yamashita, M. T.
name: Frederico, T.
name: Tomio, Lauro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The low-energy neutron$-^{19}$C scattering in a neutron-neutron-core model is studied with large scattering lengths near the conditions for the appearance of an Efimov state. We show that the real part of the elastic $s-$wave phase-shift ($δ_0^R$) presents a zero, or a pole in $ k\cotδ_0^{R}$, when the system has an Efimov excited or virtual state. More precisely the pole scales with the energy of the Efimov state (bound or virtual). We perform calculations in the limit of large scattering lengths, disregarding the interaction range, within a renormalized zero-range approach using subtracted equations. It is also presented a brief discussion of these findings in the context of ultracold atom physics with tunable scattering lengths.
Results of the statistical analysis of project data (Unraveling the Therapeutic Potential of Ginsenoside Compound Mc1 in Alzheimer's Disease: Exploring the Role of AMPK/SIRT1/NF-κB Signaling Pathway and Mitochondrial Function)
Creators: name: Yuan, Qi
name: Yang, Zhaokun
Publisher: name: Zenodo
Year: 2023

description: The information regarding the results of the statistical analysis for each project's data is presented in this file, organized per the data order in the article.
Citizen science with and for public libraries: from librarians capacitation to research co-creation, an analysis of two Barcelona region-based projects
Creators: name: Bonhoure, Isabelle
name: Cigarini, Anna
name: Vicens, Julian
name: Perelló, Josep
Publisher: name: Zenodo
Year: 2021
Subjects: Citizen Science
Citizen Social Science
Public Libraries
Co-creation

description: The presentation focuses on exemplifying the synergies that can arise when Citizen Science is introduced in Public Libraries, here through the “Citizen Science in Action” program, implemented in 26 Public Libraries of the Barcelona region. We will detail the main characteristics and results of the program, which included Librarians capacity building and the co-creation by Library users of a new Citizen Social Science project, addressing the access to housing, as a shared social concern. The lessons learned will also be discussed, with the aim of extrapolating and/or upscaling this methodology to other Libraries networks.
Band-edge emission enhancement in sputtered ZnO thin films with ultraviolet surface lattice resonances
Creators: name: Simon, Thomas
name: Kostcheev, Sergei
name: Rumyantseva, Anna
name: Béal, Jérémie
name: Gérard, Davy
name: Martin, Jérôme
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Metallic nanostructures acting as optical nanoantennas can significantly enhance the photoluminescence (PL) of nearby emitters. Albeit luminescence enhancement factors of several orders of magnitude have been reported for quantum dots or molecules, in the case of bulk emitters the magnitude of the plasmonic enhancement is strongly hindered by the weak spatial overlap between the active medium and the electromagnetic modes of the nanoantenna. Here, we propose a solid-state ultraviolet emitter based on a thin film of zinc oxide (ZnO) coupled with an array of aluminum (Al) nanoparticles. The Al nanorod array is designed to sustain surface lattice resonances (SLRs) in the near ultraviolet, which are hybrid modes exhibiting a Fano-like lineshape with narrowed linewidth relatively to the non-hybridized plasmonic modes. By changing both the period of the array and the dimensions of the nanorods, the generated SLR is tuned either to the near band-edge (NBE) emission of ZnO or to the excitation wavelength. We experimentally demonstrate that NBE emission can be increased up to a factor of 3 compared to bare ZnO. The underlying PL enhancement mechanisms are experimentally investigated and compared with numerical simulations. We also demonstrate that SLRs are more efficient for the ZnO luminescence enhancement compared to localized surface plasmon resonances.
description: 8 pages, 8 figures. This is the authors' peer-reviewed, accepted manuscript
Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time
Creators: name: Conroy, Charlie
name: Wechsler, Risa H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A simple, observationally-motivated model is presented for understanding how halo masses, galaxy stellar masses, and star formation rates are related, and how these relations evolve with time. The relation between halo mass and galaxy stellar mass is determined by matching the observed spatial abundance of galaxies to the expected spatial abundance of halos at multiple epochs -- i.e. more massive galaxies are assigned to more massive halos at each epoch. Halos at different epochs are connected by halo mass accretion histories estimated from N-body simulations. The halo--galaxy connection at fixed epochs in conjunction with the connection between halos across time provides a connection between observed galaxies across time. With approximations for the impact of merging and accretion on the growth of galaxies, one can then directly infer the star formation histories of galaxies as a function of stellar and halo mass. This model is tuned to match both the observed evolution of the stellar mass function and the normalization of the observed star formation rate -- stellar mass relation to z~1. The data demands, for example, that the star formation rate density is dominated by galaxies with Mstar~10^{10.0-10.5} Msun from 0
description: 16 pages, 11 figures, ApJ accepted
Long-range anisotropic Heisenberg ferromagnets and electrically tunable ordering
Creators: name: Singh, Chandan K.
name: Kabir, Mukul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent realizations of intrinsic magnetic order in truly two-dimensional materials have opened new avenues in the fundamental knowledge and spintronic applications. Here we develop an anisotropic Heisenberg model with relativistic exchange interactions that are obtained from the first-principles calculations. We demonstrate the crucial importance of magnetic interactions beyond the first-neighbour to qualitatively and quantitatively reproduce the experimental results. Once we ascertain the predictive capacity of the model for chromium trihalides and CrGeTe$_3$, we investigate the feasibility of tuning the magnetic ordering by electrical means in these materials. A remarkable five-fold increase in the ferromagnetic Curie temperature is predicted in monolayer CrI$_3$ within experimentally obtainable hole density. The elusive microscopic mechanism behind the doping-dependent Curie temperature is illustrated. Further, in the present context, the effects of biaxial strain and chemical doping are also addressed. The results should trigger further experimental attention to test the present conclusions.
description: 11 Pages, 5 figures
Baryon magnetic moment in large-$N_c$ chiral perturbation theory: Complete analysis for $N_c=3$
Creators: name: Flores-Mendieta, Ruben
name: Garcia, Carlos Isaac
name: Hernandez, Johann
name: Trejo, Maria Anabel
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Baryon magnetic moments are computed in baryon chiral perturbation theory in the large-$N_c$ limit at one-loop order, where $N_c$ is the number of color charges. Orders $\mathcal{O}(m_q^{1/2})$ and $\mathcal{O}(m_q \ln m_q)$ corrections are both evaluated including all the operator structures that participate at the physical value $N_c=3$. The complete expressions for octet and decuplet baryon magnetic moments in addition to decuplet-octet baryon transition moments are thus compared to their available counterparts obtained in heavy baryon chiral perturbation theory for degenerate intermediate baryons in the loops. Theoretical expressions fully agree at the physical values $N_c=3$ and $N_f=3$ flavors of light quarks. Some numerical evaluations are produced via a least-squares fit to explore the free parameters in the analysis. Results point out the necessity of incorporating the effects of non-degenerate intermediate baryons in the loops for a consistent determination of these free parameters.
description: 97 pages, 2 figures, 14 tables
Decay of wood by the Dacrymycetales
Creators: name: Seifert, Keith Anthony
Publisher: name: University of British Columbia
Year: 2010

description: Forty-one strains representing sixteen species in the Dacrymycetales were tested for their abilities to decay wood using the soil block test. Dacrymyces stillatus, D. capitatus, D. dictyosporus, Dacryopinax spathularia, Cerinomyces ceraceus and Calocera cornea and C. lutea caused considerable decay of wood. Dacrymyces palmatus, D. minor, D. novae-zelandiae and Calocera viscosa also decayed wood to a significant extent. Four distinct types of decay were noted; three types of brown-rot and one type of white-rot. The brown-rotting strains were unusual in that some degraded considerable amounts of lignin. Monokaryons of Dacryopinax spathularia showed a reduced capacity to decay wood, while those of Dacrymyces stillatus and D. palmatus did not decay wood. Types of rot associated with species in the Tremellales and Auriculariales thought to be saprobic on wood are presented based on herbarium specimens.
Street-based Topological Representations and Analyses for Predicting Traffic Flow in GIS
Creators: name: Jiang, Bin
name: Liu, Chengke
Publisher: name: arXiv
Year: 2007
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: It is well received in the space syntax community that traffic flow is significantly correlated to a morphological property of streets, which are represented by axial lines, forming a so called axial map. The correlation co-efficient (R square value) approaches 0.8 and even a higher value according to the space syntax literature. In this paper, we study the same issue using the Hong Kong street network and the Hong Kong Annual Average Daily Traffic (AADT) datasets, and find surprisingly that street-based topological representations (or street-street topologies) tend to be better representations than the axial map. In other words, vehicle flow is correlated to a morphological property of streets better than that of axial lines. Based on the finding, we suggest the street-based topological representations as an alternative GIS representation, and the topological analyses as a new analytical means for geographic knowledge discovery.
description: 14 pages, 9 figures, 6 tables, submitted to International Journal of Geographic Information Science
Halperin-Saslow modes as the origin of the low temperature anomaly in $NiGa_2S_4$
Creators: name: Podolsky, Daniel
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The absence of magnetic long range order in the triangular lattice spin-1 antiferromagnet $NiGa$_2$S$_4$ has prompted the search for a novel quantum ground state. In particular, several experiments suggest the presence of a linearly dispersing mode despite no long-range magnetic order. We show that the anomalous low temperature properties of NiGa$_2$S$_4$ can naturally be explained by the formulation developed by Halperin and Saslow where the linearly dispersing Halperin-Saslow mode may exist in the background of frozen spin moments and zero net magnetization. We provide highly non-trivial consistency checks on the existing experimental data and suggest future experiments that can further confirm the existence of the Halperin-Saslow mode. Our results place strong constraints on any microscopic theory of this material.
description: 5 pages, 1 figure
Rhoptropus taeniostictus Laurent 1964
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Rhoptropus
Rhoptropus taeniostictus

description: ANGOLAN NAMIB DAY GECKO
Rhoptropus taeniostictus Laurent, 1964
MATERIAL.— Namibe-Lubango road, 2 km east (by road) of Mangueiras, south side of the road, 5 December 2013, 15º2ʹ40.8ʺS, 13º9ʹ32.6ʺE, 664 m (CAS 254889); Namibe-Lubango road, road marker 59, 1.8 km west (by road) of Caraculo, on the north side of the road, 6 December 2013, 15º0ʹ58.0ʺS, 12º38ʹ37.3ʺE, 490 m (CAS 254895); 15º0ʹ57.9ʺS, 12º38ʹ42.3ʺE, 472 m (CAS 254897– 254898), 15º0ʹ57.6ʺS, 12º38ʹ36.8ʺE, 500 m (CAS 254901), 15º1ʹ0.7ʺS, 12º38ʹ31.9ʺE, 492 m (CAS 254904–254905), 15º0ʹ58.8ʺS, 12º38ʹ33.8ʺE, 491 m (CAS 254908), 15º0ʹ58.9ʺS, 12º38ʹ32.4ʺE, 497 m (CAS 254911), 15º0ʹ57.3ʺS, 12º38ʹ32.6ʺE, 497 m (CAS 254916), 15º1ʹ0.1ʺS, 12º38ʹ31.9ʺE, 497 m (CAS 254917–254918), 15º1ʹ0.9ʺS, 12º38ʹ30.4ʺE, 503 m (CAS 254919).
COMMENTS.— The Angolan endemic R. taeniostictus was described from a single specimen from “ 60 km on the road from Moçâmedes [presently Namibe] to Sá da Bandeira [presently Lubango]”. Laurent (1964a) also considered the populations of R. barnardi from Mucungo cited by Schmidt (1933) as referable to R. taeniostictus. The species appears restricted to Namibe Province and is represented by many specimens in our collection as well as more widespread Namibe localities in the Ditsong National Museum of Natural History.
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on page 30, DOI: 10.5281/zenodo.11066801
Rhoptropus undetermined
Creators: name: Ceríaco, L. M. P.
name: De Sá, S.
name: Bandeira, S.
name: Valério, H.
name: Stanley, E. L.
name: Kuhn, A. L.
name: Marques, M. P.
name: Vindum, J. V.
name: Blackburn, D. C.
name: Bauer, A. M.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Rhoptropus
Rhoptropus undetermined

description: Rhoptropus sp.
MATERIAL.— Espinheira, 29 November 2013, 16º47ʹ32.7ʺS, 12º21ʹ14.4ʺE, 562 m (CAS 254801); Omauha Lodge, 4 December 2013, 16º12ʹ1.2ʺS, 12º24ʹ0.1ʺE, 343 m (CAS 254836, CAS 254955); INP, north of Tambor, 4 December 2013, 15º59ʹ46.9ʺS, 12º24ʹ24.0ʺE, 300 m (CAS 254842, CAS 254762, CAS 254766), 15º28ʹ31.7ʺS, 12º27ʹ43.9ʺE, 408 m (CAS 254765, CAS 254760); Leba Pass, between river and highway, 5 December 2013, 15º4ʹ12.1ʺS, 13º14ʹ36.5ʺE, 1680 m (CAS 254873), 15º4ʹ13.2ʺS, 13º14ʹ37.7ʺE, 1676 m (CAS 254879, CAS 254881, CAS 254883); Namibe-Lubango road, 2 m east (by road) of Mangueiras, south side of the road, 5 December 2013, 15º2ʹ40.8ʺS, 13º9ʹ32.6ʺE, 664 m (CAS 254890 – 254891), 15º2ʹ40.7ʺS, 13º9ʹ31.0ʺE, 640 m (CAS 254893, CAS 254894).
COMMENTS.— This undescribed species is morphologically similar to both R. barnardi and R. biporosus, but appears to be endemic to southern Angola. Populations from the Escarpment are both morphologically and genetically different from those below the Escarpment.This taxon is currently under study as part of a phylogenetic analysis and revision of the genus as a whole (A. Kuhn and A. Bauer, in prep.).
description: Published as part of Ceríaco, L. M. P., De Sá, S., Bandeira, S., Valério, H., Stanley, E. L., Kuhn, A. L., Marques, M. P., Vindum, J. V., Blackburn, D. C. & Bauer, A. M., 2016, Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola, pp. 15-61 in Proceedings of the California Academy of Sciences 63 (2) on page 30, DOI: 10.5281/zenodo.11066801