cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: House dust mites in Irish homes: Their recovery, associated bacteria and antimicrobial resistance
Creators: name: Aljohani, Amal
Publisher: name: University of Galway
Year: 2024
Subjects: subject: Biological and Chemical Sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Dermatophagoides pteronyssinus
subject: house dust mite
subject: Bacteria
subject: Antimicrobial resistance

description: Dermatophagoides pteronyssinus (Acari: Pyroglyphidae) is amongst the most common house dust mite (HDM) species in Europe, and is associated with allergy and respiratory conditions in human beings. For Chapter 1, House Dust Mites (HDM) were sampled from fabrics by means of vacuuming. Dermatophagoides pteronyssinus specimens were added to cotton, denim and fleece and the efficiency of two vacuuming protocols were tested. Protocol 1 involved a single pass of the vacuum head across the fabrics for 60, 90 and 120 seconds and Protocol 2 encompassed multi-directional vacuuming for the same time periods, after which the recovery of HDM was determined for both protocols. Protocol 2 (120 seconds vacuuming) was the most efficient for the recovery of HDM, particularly for the recovery of entrapped HDM in denim and cotton weaves. Chapters 3 and 4 detail the bacterial microbiome/resistome of HDM. Dust samples were collected from 56 homes in Galway, Ireland, between 2020 and 2022. Mites were recovered from household dust in 80% of homes and D. pteronyssinus was the most abundant species. Viable and cultivable bacteria were isolated from the exoskeleton of HDM, and the exoskeleton was predominately populated by Staphylococci (Staphylococcus equorum was the most abundant species detected). Exoskeleton-associated bacteria showed resistance to monobactam and carbapenen among others. Staphylococcus epidermidis survived on the exoskeleton of D. pteronyssinus for eight days during laboratory studies. With a culture-independent approach, Staphylococci dominated the microbiome of household-sampled mites (whole-mite approach). The bacterial microbiomes of HDM and household dust were significantly correlated. Antimicrobial Resistance Genes (ARG) encoding for multi-drug resistance, macrolide- lincosamide-streptogramin B, mobile genetic elements, beta-lactam, tetracycline, and aminoglycosides were detected in both mites and household dust. The mite and household dust resistome were significantly correlated but a history of antibiotic use in the domestic setting did not influence the magnitude of ARGs detected.
On the probability of forming polygons from a broken stick
Creators: name: Verreault, William
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: 60D05

description: Break a stick at random at $n-1$ points to obtain $n$ pieces. We give an explicit formula for the probability that every choice of $k$ segments from this broken stick can form a $k$-gon, generalizing similar work. The method we use can be applied to other geometric probability problems involving broken sticks, which are part of a long-standing class of recreational probability problems with several applications to real-world models.
description: 13 pages
New measurements of the transverse beam asymmetry for elastic electron scattering from selected nuclei
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2012
Subjects: nucl-ex

description: We have measured the beam-normal single-spin asymmetry A n in the elastic scattering of 1-3 GeV transversely polarized electrons from H1 and for the first time from He4, C12, and Pb208. For H1, He4, and C12, the measurements are in agreement with calculations that relate A n to the imaginary part of the two-photon exchange amplitude including inelastic intermediate states. Surprisingly, the Pb208 result is significantly smaller than the corresponding prediction using the same formalism. These results suggest that a systematic set of new A n measurements might emerge as a new and sensitive probe of the structure of heavy nuclei. © 2012 American Physical Society.
Degradation of Humic acid from aqueous solution by Fenton reaction and microbiological technique
Creators: name: Thassawathas Suchaiya
name: Prapakorn Krongthong
name: Nuttawan Yoswathana
name: Woranart Jonglertjunya
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2010
Subjects: Humic acid, Fenton reaction,Pseudomonas fluorescens, Lactococcus lactis

description: 3, 37, KKU Engineering Journal
Bifurcations of Clusters and Collective Oscillations in Networks of Bistable Units
Creators: name: Salman, Munir
name: Bick, Christian
name: Krischer, Katharina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Dynamical Systems (math.DS)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate dynamics and bifurcations in a mathematical model that captures electrochemical experiments on arrays of microelectrodes. In isolation, each individual microelectrode is described by a one-dimensional unit with a bistable current-potential response. When an array of such electrodes is coupled by controlling the total electric current, the common electric potential of all electrodes oscillates in some interval of the current. These coupling-induced collective oscillations of bistable one-dimensional units are captured by the model. Moreover, any equilibrium is contained in a cluster subspace, where the electrodes take at most three distinct states. We systematically analyze the dynamics and bifurcations of the model equations: We consider the dynamics on cluster subspaces of successively increasing dimension and analyze the bifurcations occurring therein. Most importantly, the system exhibits an equivariant transcritical bifurcation of limit cycles. From this bifurcation, several limit cycles branch, one of which is stable for arbitrarily many bistable units.
Protolembos Myers 1988
Creators: name: Ariyama, Hiroyuki
name: Kodama, Masafumi
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Aoridae
Protolembos

description: Protolembos Myers, 1988
[Japanese name: Minami-maeashi-yokokoebi-zoku, new]
Protolembos Myers, 1988a: 190.— Myers, 1988b: 313.—J.L. Barnard & Karaman, 1991: 227.— Myers & Lowry, 2003: 465.
Type species. Lembos chiltoni Myers, 1981, monotypy.
Diagnosis [after Myers (1988a)]. Mandibular palp article 3 longer than article 2, ventral margin straight or sinuous, marginal setae of two distinct lengths, but terminal setae longer; left mandibular molar with complex, rounded, subsimilar plates; maxilliped basis with strong flange; male gnathopod 1 with propodus enlarged, longer than carpus; female gnathopod 1 not like that of male; uropod 3 peduncle short, expanded, outer ramus with long marginal setae and extremely long distal setae and with small second article.
Included species (11). Protolembos arinyas Myers, 1988; P. chiltoni (Myers, 1981); P. clematis (Moore, 1987); P. crouyensis Myers, 1998; P. drummondae Myers, 1988; P. kidoli (Myers, 1975); P. murrarum Myers, 1988: P. ryukyuensis sp. nov.; P. tegulapodos Myers, 2002; P. verrucularum (Moore, 1987); and P. yaranus Myers, 1988.
Remarks. This genus is characterized mainly by the maxilliped with a strong flange only on the laterodistal corner of basis. Lembos also has flanges of the maxilliped (Table 1), but the flanges are situated on the lateral margins of basis and outer plate in L. hypacanthus K.H. Barnard, 1916 (Myers & Lyons 1987) or those of basis, outer plate and palp article 1 in L. websteri Bate, 1857 (Myers 1988a).
description: Published as part of Ariyama, Hiroyuki & Kodama, Masafumi, 2024, Three species of the family Aoridae Stebbing, 1899 (Crustacea: Amphipoda) collected from remote islands in southern Japan, with a key to all Japanese species of the family, pp. 500-528 in Zootaxa 5433 (4) on page 503, DOI: 10.11646/zootaxa.5433.4.2, http://zenodo.org/record/10954486
The Scaling Relationship Between Telescope Cost and Aperture Size for Very Large Telescopes
Creators: name: van Belle, Gerard T.
name: Meinel, Aden Baker
name: Meinel, Marjorie Pettit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Cost data for ground-based telescopes of the last century are analyzed for trends in the relationship between aperture size and cost. We find that for apertures built prior to 1980, costs scaled as aperture size to the 2.8 power, which is consistent with the previous finding of Meinel (1978). After 1980, `traditional' monolithic mirror telescope costs have scaled as aperture to the 2.5 power. The large multiple mirror telescopes built or in construction during this time period (Keck, LBT, GTC) appear to deviate from this relationship with significant cost savings as a result, although it is unclear what power law such structures follow. We discuss the implications of the current cost-aperture size data on the proposed large telescope projects of the next ten to twenty years. Structures that naturally tend towards the 2.0 power in the cost-aperture relationship will be the favorable choice for future extremely large apertures; our expectation is that space-based structures will ultimately gain economic advantage over ground-based ones.
description: 11 pages, 1 figure, appears in Proc. SPIE
Representation of physical activity domains and sedentary behaviors across categories of gender and disability in children’s TV cartoons
Creators: name: Gans-Segrera, Sandra
name: Molina-García, Javier
name: Martínez-Bello, Vladimir
Publisher: name: Motricidade
Year: 2018

description: Television (TV) cartoons could reflect and shape social values about children’s health-related behaviors. The main aim of this study is to analyze the portrayal of physical activity (PA) domains in the most popular Spanish children’s television (TV) cartoons. It is performed a content analysis of each scene following a coding scheme. The sample selected included the five most popular children’s TV cartoons for the 2013-2014 period in Spain. Our results show a large gap between the modest representation of different PA domains compared to the overwhelming depiction of sedentary behaviors. We do not find evidence of males and females participating equally in a variety of PA domains, and we fail to identify any characters with disabilities, reinforcing evidence on their invisibility in different media. Current children’s cartoons in Spain are not adequate regarding promoting healthy behaviors related to PA. While policy makers need to work on limiting sedentary time in pre-schoolers, children, teachers, and parents should be encouraged to develop their critical thinking about the under-representation of health-related behaviors—including PA—on children’s TV cartoons. The study further contributes to the scientific literature by shedding light on the typical health-related behaviors coded in analyses of children’s cartoons.
description: Motricidade, Vol 14 No 4 (2018): Motricidade
Variability in Proto-Planetary Nebulae: VIII. A New Sample of Southern Hemisphere Objects
Creators: name: Hrivnak, Bruce J.
name: Henson, Gary
name: Hillwig, Todd C.
name: Lu, Wenxian
name: Bremer, Matthew T.
name: Vogl, David M.
name: Grimm, Peyton J.
name: Egan, Sean M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: As part of our continuing study of light variability in proto-planetary nebulae (PPNe), we present the results from a long-term study of nine southern hemisphere objects. We have monitored their light variations over a nine-year interval from 2010-2018. These were supplemented by data from the ASAS-SN and ASAS-3 surveys, leading to combined light curves from 2000 to 2020. Pulsation periods were found in seven of the objects, although the three shortest must be regarded as tentative. The periods range from 24 to 73 days. When compared with the results of previous studies of the light variations in PPNe, we find that they show the same trends of shorter period and smaller light variations with higher temperatures. Luminosities were calculated based on the spectral energy distributions, reddening, and Gaia distances, and these confirm the identification of all but one as post-AGB objects. Three of the stars possess long-period variations of 5 to 19 years. These are most likely due to the periodic obscuration of the star by a disk, suggesting the presence of a binary companion and a circumbinary disk.
description: 27 pages, 6 tables, 8 figures. Accepted Sep 1, 2021 for publication in the Astronomical Journal: revised in attempt to correct pdf file
Autonomy support in the aquatic motivational healthy program through the SDT
Creators: name: Zazo Sánchez-Mateos, Ricardo
name: Peruyero, Fernando
name: Moreno Murcia, Juan Antonio
Publisher: name: Motricidade
Year: 2018

description: This study aimed to test an aquatic motivation healthy program based on the self determination theory (SDT), using a quasi-experimental study. The research data come from different physical, psycho-social and behavioral measures made on 49 women. The sample was divided into two groups, an experimental group consisting of 28 women (M= 43.64; SD= 12.06), with an average experience of 3.05 years, and a control group composed of 21 women (M= 47.14; SD= 10.01), with an average experience of 2.29 years doing physical exercise in an aquatic environment in a large Spanish city. After the intervention with a program based on the SDT and instructor’s autonomy support, both groups perceived physical benefits for health, but the experimental group perceived a better instructor’s autonomy support, a better relationship with others and a greater psychological well-being among the practitioners. The information offered in this study may be of interest to promote for instructor part, these type the aquatic physical exercise programs in favor of the population’s health.
description: Motricidade, Vol 14 No 2-3 (2018): Motricidade
Generation of Physical Conditions Similar to Interior of Superearth Extrasolar Planets by Imploding Solid Iron in LAPLAS Experiments at FAIR
Creators: name: Tahir, N. A.
name: Shutov, A.
name: Piriz, A. R.
name: Stöhlker, T.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
A Precessing Jet Scenario for the Multi-Wavelength Long-Term Modulation of LS I +61$^\circ$303
Creators: name: Jaron, Frederic
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The high-mass X-ray binary LS I +61$^\circ$303 is detected across the electromagnetic spectrum from radio until the very high energy gamma-ray regime. The emission is not only highly variable on many time scales, but is also periodic at all observed wavelengths. Periodic modulation was observed on different time-scales, ranging from hours, over months to several years. The subject of this article is a super-orbital, long-term modulation of ~4.6 years. We review the observation of this periodic modulation at multiple wavelengths and investigate systematic relationships between them. In particular, radio observations reveal that the long-term modulation is a very stable feature of the source. Observations at other wavelengths result in a phase-shift of the modulation pattern that is a systematic function of energy. The stability of this period favors a scenario in which the long-term modulation is the result of a precessing jet giving rise to periodic changes in the Doppler factor, beating with the orbital modulation of the accretion rate. We explain the phase-shifts across energy bands in a scenario with shorter wavelengths originating closer to the base of the presessing jet. A significant deviation of the TeV emission from this trend possibly requires a different explanation related to magnetic reconnection events.
description: 16 pages, 3 figures
A novel active quenching circuit for single photon detection with Geiger mode avalanche photodiodes
Creators: name: Stipcevic, Mario
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we present a novel construction of an active quenching circuit intended for single photon detection. For purpose of evaluation, we have combined this circuit with a standard avalanche photodiode C30902S to form a single photon detector. A series of measurements, presented here, show that this single photon detector has a dead time of less than 40ns, maximum random counting frequency of over 14MHz, low after pulsing, detection efficiency of over 20% and a good noise performance. This simple and robust active quenching circuit can be built from of-the-shelf electronic components and needs no complicated adjustments.
description: 9 pages, 13 figures, 15 references
A Class of Partially Solvable Two-Dimensional Quantum Models with Periodic Potentials
Creators: name: Ioffe, M. V.
name: Guilarte, J. Mateos
name: Valinevich, P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The supersymmetrical approach is used to analyse a class of two-dimensional quantum systems with periodic potentials. In particular, the method of SUSY-separation of variables allowed us to find a part of the energy spectra and the corresponding wave functions (partial solvability) for several models. These models are not amenable to conventional separation of variables, and they can be considered as two-dimensional generalizations of Lame, associated Lame, and trigonometric Razavy potentials. All these models have the symmetry operators of fourth order in momenta, and one of them (the Lame potential) obeys the property of self-isospectrality.
description: 22 pages; some typos corrected; new reference added
Intrinsic Magnon Nernst Effects in Pyrochlore Iridate Thin Films
Creators: name: Ma, Bowen
name: Fiete, Gregory A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We theoretically study the magnon spin thermal transport using a strong coupling approach in pyrochlore iridate trilayer thin films grown along the [111] direction. As a result of the Dzyaloshinskii-Moriya interaction (DMI), the spin configuration of the ground state is an all-in/all-out ordering on neighboring tetrahedra of the pyrochlore lattice. In such a state, the system has an inversion symmetry and a Nernst-type thermal spin current response is well defined. We calculate the temperature dependence of the magnon Nernst response with respect to the magnon band topology controlled by the spin-orbit coupling parameters and observe topologically protected chiral edge modes over a range of parameters. Our study complements prior work on the magnon thermal Hall effect in thin-film pyrochlore iridates and suggests that the [111] grown thin-film pyrochlore iridates are a promising candidate for thermal spin transport and spin caloritronic devices.
Chemical Analysis of Five Red Giants in the Globular Cluster M10 (NGC 6254)
Creators: name: Haynes, Sharina
name: Burks, Geoffrey
name: Johnson, Christian I.
name: Pilachowski, Catherine A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have determined Al, $α$, Fe-peak, and neutron capture elemental abundances for five red giant branch (RGB) stars in the Galactic globular cluster M10. Abundances were determined using equivalent width analyses of moderate resolution (R$\sim$15,000) spectra obtained with the Hydra multifiber positioner and bench spectrograph on the WIYN telescope. The data sample the upper RGB from the luminosity level near the horizontal branch to about 0.5 mag below the RGB tip. We find in agreement with previous studies that M10 is moderately metal-poor with [Fe/H]=-1.45 ($σ$=0.04). All stars appear enhanced in Al with $$=+0.33 ($σ$=0.19), but no stars have [Al/Fe]$\ga$+0.55. We find the $α$ elements to be enhanced by +0.20 to +0.40 dex and the Fe--peak elements to have [el/Fe]$\sim$0, which are consistent with predictions from type II SN ejecta. Additionally, the cluster appears to be r-process rich with $$=+0.41.
description: 16 Pages; 3 Figures; 3 Tables; Accepted for publication in PASP
Progress in Developing Hybrid RPCs: GEM-like Detectors with Resistive Electrodes
Creators: name: Fonte, P.
name: Martinengo, P.
name: Nappi, E.
name: Oliveira, R.
name: Peskov, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We have recently developed an innovative detector of photons and charged particles: a GEM-like gaseous amplification structure with resistive electrodes instead of commonly used metallic ones. This novel detector combines the best property of GEMs- the capability to operate in a cascaded mode and in poorly quenched gases - and of RPC: the protection against sparks. In this paper will shortly review our latest achievements in this direction, however the main focus will be given on a new advanced design that allows to build large area detectors manufactured by a screen printing technology. The proposed detector, depending on the applications, can operate either in a GEM mode (electron multiplications through holes only) or as a hybrid RPC with simultaneous amplifications in the drift region and in the holes. The possible applications of this new detector will be discussed.
title: Open social data crime analytics
Creators: name: Ihsan, Ullah,
name: Lane, Caoilfhionn
name: Drury, Brett
name: Mellotte, Marc
name: Madden, Michael G.
Publisher: name: IJCAI 17 Melbourne
Year: 2017
Subjects: subject: Social Media
subject: Cybercrime
subject: Open Social Data
subject: Data analytics

description: Crime is under-reported. Reporting crime requires the victim to complete a number of administrative obligations. These obligations, as well as the nature of the crime, may create an inertia that discourages the reporting of the crime (for example, being defrauded might damage a financial organisation s reputation). However, there may be information leaks from compromised organizations, via affected customers on social media. A key advantage of using social data is that it is often immediate, and can have indications of the nature of a crime such as (1) named entities, for example, Bitcoin or PayPal; (2) geocoding information; and (3) the affected persons. Our aim in this work is to use social media platforms e.g. Twitter, Reddit, Facebook, etc. to detect signals of cybercrime incidents. Such signaling is arguably a better indicator of the extent and effect of cybercrime than traditional reporting methods.
In vivo photothermal optical coherence tomography of gold nanorod contrast agents
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2012
Subjects: (110.4500) Optical coherence tomography
(160.4236) Nanomaterials
(350.5340) Photothermal effects

description: Photothermal optical coherence tomography (PT-OCT) is a potentially powerful tool for molecular imaging. Here, we characterize PTOCT imaging of gold nanorod (GNR) contrast agents in phantoms, and we apply these techniques for in vivo GNR imaging. The PT-OCT signal was compared to the bio-heat equation in phantoms, and in vivo PT-OCT images were acquired from subcutaneous 400 pM GNR Matrigel injections into mice. Experiments revealed that PT-OCT signals varied as predicted by the bio-heat equation, with significant PT-OCT signal increases at 7.5 pM GNR compared to a scattering control (p < 0.01) while imaging in common path configuration. In vivo PT-OCT images demonstrated an appreciable increase in signal in the presence of GNRs compared to controls. Additionally, in vivo PT-OCT GNR signals were spatially distinct from blood vessels imaged with Doppler OCT. We anticipate that the demonstrated in vivo PT-OCT sensitivity to GNR contrast agents is sufficient to image molecular expression in vivo. Therefore, this work demonstrates the translation of PT-OCT to in vivo imaging and represents the next step towards its use as an in vivo molecular imaging tool. © 2012 Optical Society of America.
Physical fitness of amateur paddle players: comparisons between different competitive levels
Creators: name: Müller, Camila Borges
name: Del Vecchio, Fabricio Boscolo
Publisher: name: Motricidade
Year: 2018

description: Padel is widely practiced racket sport, although there is scanty data comparing competitive levels and differences between the sexes. Physical fitness of padel players was compared, according to sex and level. The research involved 35 people (age = 29.6 ± 2.9 years, practice = 6.8 ± 4.9 years), 13 of the first, 15 of the second and 7 of the third category. Aerobic power (PAM) with Yo-YoIR1, agility with handball agility specific test (HAST), muscular power with vertical jump and 3kg medicineball throw, and handgrip endurance strength (HES) with dynamometer were measured. The variables PAM, HAST, vertical jump, throttle and FIPM were significantly different between genders. In addition, in the male category, players in the upper category had lower heart rate scores after Yo-YoIR1 as well as distance traveled, throttle and FIPM maximum, while in females the superior category was better in the variables distance traveled in Yo-YoIR1 and vertical jump. On the other hand, in both sexes, players of superior categories presented greater time of practice. Amateur padel players with a higher competitive level do not present higher physical fitness, but present longer practice time.
description: Motricidade, Vol 14 No 4 (2018): Motricidade
Critical mathematical thinking in young students
Creators: name: Monteleone, Chrissoula
Publisher: name: Australian Catholic University
Year: 2021
Subjects: assessing claims and arguments
clarifying
critical mathematical thinking
critical thinking
curriculum
early years
factual teacher questions
guiding teacher questions

description: The aims of the study were to investigate critical mathematical thinking in young students, and teaching actions/questions that help these young students exhibit their critical mathematical thinking. A key finding was the conceptualisation of a Critical Mathematical Thinking Framework for Young Students. This framework (a) articulates the key characteristics young students exhibit as they engage in critical mathematical thinking, and (b) can be used by teachers to help them identify critical mathematical thinking within the classroom context. Additionally, specific teacher questions that support young students to exhibit critical mathematical thinking were delineated. The study determined that teachers play a pivotal role in supporting young students to exhibit their critical mathematical thinking.
Roles of quantum nuclei and inhomogeneous screening in the x-ray absorption spectra of water and ice
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2012
Subjects: physics.chem-ph
cond-mat.dis-nn

description: We calculate the x-ray absorption spectra of liquid water under ambient conditions and of hexagonal ice close to melting, using a static GW approach that includes approximately inhomogeneous screening effects. Quantum dynamics of the nuclei is taken into account by averaging the absorption cross section over molecular configurations generated by path integral simulations. We find that the inclusion of quantum disorder is essential to bring the calculated spectra in close agreement with experiment. In particular, the intensity of the pre-edge feature, a spectral signature of broken and distorted hydrogen bonds, is accurately reproduced, in water and ice, only when quantum nuclei are considered. The effect of the inhomogeneous screening is less important but non-negligible, particularly in ice. © 2012 American Physical Society.
Interface enhancement of spin-polar phonon coupling in perovskite multiferroic superlattices
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2012
Subjects: cond-mat.mtrl-sci

description: First-principles calculations are carried out for CaMnO 3/ BaTiO 3 short-period superlattices with epitaxial strain corresponding to growth on a NdGaO 3 substrate. The ferroelectricity and antiferrodistortion are analyzed under different magnetic orderings. It reveals that MnO 6 octohedral rotation is greatly suppressed at the interfaces, which effectively increases the spin-polar phonon coupling in CaMnO 3. Besides the conventional epitaxial-strain method, this mechanism provides an alternative way in engineering the spin-lattice coupling materials for an enhanced functionality. © Copyright EPLA, 2012.
Exhausting formal quantization procedures
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: math.QA
53D55, 19D55

description: © 2013 Springer Basel. In paper [1] the author introduced stable formality quasi-isomorphisms and described the set of its homotopy classes. This result can be interpreted as a complete description of formal quantization procedures. In this note we give a brief exposition of stable formality quasi-isomorphisms and prove that every homotopy class of stable formality quasi-isomorphisms contains a representative which admits globalization. This note is loosely based on the talk given by the author at XXX Workshop on Geometric Methods in Physics in Białowieza, Poland.
A characteristic particle method for traffic flow simulations on highway networks
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: math.NA
physics.comp-ph
physics.soc-ph
65M25, 35L65

description: A characteristic particle method for the simulation of first order macroscopic traffic models on road networks is presented. The approach is based on the method particleclaw, which solves scalar one dimensional hyperbolic conservation laws exactly, except for a small error right around shocks. The method is generalized to nonlinear network flows, where particle approximations on the edges are suitably coupled together at the network nodes. It is demonstrated in numerical examples that the resulting particle method can approximate traffic jams accurately, while only devoting a few degrees of freedom to each edge of the network. © 2013 Springer-Verlag.
AdS Wormholes
Creators: name: Bergman, A.
name: Lu, H.
name: Mei, Jianwei
name: Pope, C. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain a large class of smooth Lorentzian p-brane wormholes in supergravities in various dimensions. They connect two asymptotically flat spacetimes. In cases where there is no dilaton involved in the solution, the wormhole can connect an AdS_n\times S^m in one asymptotic region to a flat spacetime in the other. We obtain explicit examples for (n,m)=(4,7), (7,4), (5,5), (3,3), (3,2). These geometries correspond to field theories with UV conformal fixed points, and they undergo decompactification in the IR region. In the case of AdS_3, we compute the central charge of the corresponding conformal field theory.
description: 20 pages, references added
Rock slope stability and design of granite lake open pit with the application of vacuum drainage : Gibraltar Mines Ltd., McCleese Lake, B.C.
Creators: name: Pakalnis, Rimas Thomas
Publisher: name: University of British Columbia
Year: 2010

description: Volume 1 of the thesis evaluates the rock slope stability of the South Wall of the Granite Lake open pit of Gibraltar Mines Ltd. Strength, structure and groundwater information was gathered which was comprised largely of 3.4 kilometers of line mapping data (3064 structures), previous reports and interpretation. The study indicated that deep-seated failures encompassing the entire pit wall were not probable. It was found that failures were restricted to bench (27 m) size, and consequently dictated a design whereby catchment berms of sufficient width were determined. This indicated an overall wall angle of 38° with isolated areas exhibiting steeper slopes. Steeper slopes would be possible under the following conditions : (a) Local drainage be applied (b) Control blasting be incorporated (c) A higher probability of ravelling be accepted. In addition Volume II of the thesis examines the benefits achieved by employing vacuum horizontal drainage. Horizontal drains were installed under vacuum in a mine slope. The benefit arises from an increased hydraulic gradient due to exhausting to a negative atmospheric pressure. The prototype was based on the well known civil engineering de-watering practice, well pointing. Results showed that a vacuum of 457 mm of mercury was obtainable in a fractured moderately permeable rock slope. Immediate drawdown of the water table occurred resulting in a total of 1.1 m of drop occurring after 59 minutes of operation. Flow increased from 0 1/s to 0.2 1/s discharging from the horizontal drains when the vacuum was applied. It was found that drawdown continued to occur with the water level dropping below the drain elevation. The system developed may be employed as a depressuri-zation tool for slope stabilization projects. The above was further reinforced through laboratory and numerical modelling.
Spectroscopy and multiband photometry of the afterglow of intermediate duration gamma-ray burst 040924 and its host galaxy
Creators: name: Wiersema, K.
name: van der Horst, A. J.
name: Kann, D. A.
name: Rol, E.
name: Starling, R. L. C.
name: Curran, P. A.
name: Gorosabel, J.
name: Levan, A. J.
name: Fynbo, J. P. U.
name: Postigo, A. de Ugarte
name: Wijers, R. A. M. J.
name: Castro-Tirado, A. J.
name: Guziy, S. S.
name: Hornstrup, A.
name: Hjorth, J.
name: Jelinek, M.
name: Jensen, B. L.
name: Kidger, M.
name: Martin-Luis, F.
name: Tanvir, N. R.
name: Tristram, P.
name: Vreeswijk, P. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical photometry and spectroscopy of the afterglow and host galaxy of gamma-ray burst 040924. This GRB had a rather short duration of T90 ~2.4s, and a well sampled optical afterglow light curve. We aim to use this dataset to find further evidence that this burst is consistent with a massive star core-collapse progenitor. We combine the afterglow data reported here with data taken from the literature and compare the host properties with survey data. We find that the global behaviour of the optical afterglow is well fit by a broken power-law, with a break at ~0.03 days. We determine the redshift z = 0.858 +/- 0.001 from the detected emission lines in our spectrum. Using the spectrum and photometry we derive global properties of the host, showing it to have similar properties to long GRB hosts. We detect the [Ne III] emission line in the spectrum, and compare the fluxes of this line of a sample of 15 long GRB host galaxies with survey data, showing the long GRB hosts to be comparable to local metal-poor emission line galaxies in their [Ne III] emission. We fit the supernova bump accompanying this burst, and find that it is similar to other long GRB supernova bumps, but fainter. All properties of GRB 040924 are consistent with an origin in the core-collapse of a massive star: the supernova, the spectrum and SED of the host and the afterglow.
description: A&A submitted. 10 pages, 4 figures
title: An Empirical Investigation of Networks in the Blogosphere
Creators: name: Bojars, Uldis
name: Harth, Andreas
name: Kinsella, Sheila
Publisher: name: University of Galway
Year: 2007
Subjects: subject: Blogs
subject: Online social networks
subject: Semantic Web
subject: Computer algorithms

description: We seek out to investigate the social networks manifested in weblogs. Our dataset, derived from an initial list of URIs, consists of 3.9M files in XML or RDF format, totaling over 400M statements in RDF. We continue by applying well-known network analysis algorithm to parts of the derived net- work. Our experiments show that links analysis algorithms benefit from input in a common, structured data model.
Tethylembos Myers 1988
Creators: name: Ariyama, Hiroyuki
name: Kodama, Masafumi
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Aoridae
Tethylembos

description: Tethylembos Myers, 1988
[Japanese name: Maeashi-yokokoebi-zoku]
Tethylembos Myers, 1988a: 191.—J.L. Barnard & Karaman, 1991: 236.— Myers & Lowry, 2003: 465.
Type species. Lembos viguieri Chevreux, 1911, monotypy.
Diagnosis [after Myers (1988a)]. Mandibular palp article 3 longer than article 2, ventral margin straight, marginal setae of two distinct lengths, but terminal setae longer; left mandibular molar with oblique lamellae extending across half width of molar surface from marginal lappets; male gnathopod 1 with propodus enlarged, a little longer than carpus; female gnathopod 1 not like that of male; uropod 3 peduncle short, expanded, outer ramus with long marginal setae, extremely long distal setae and a small second article.
Included species (3). Tethylembos cavatus sp. nov.; T. japonicus Ariyama, 2004; and T. viguieri (Chevreux, 1911).
Remarks. Only Tethylembos and Archaeobemlos have the left mandibular molar with oblique lamellae (Table 1); however, the mandibular palp article 3 is straight and longer than article 2 in Tethylembos (vs. falcate and shorter than article 2 in Archaeobemlos). Tethylembos closely resembles Bemlos in all features except for the left mandibular molar. The known Bemlos species possibly include some Tethylembos species, because structure of the mandibular molar has not been observed sufficiently in many species. In fact, Bemlos pualani (J.L. Barnard, 1970) is very similar to the Tethylembos species (Ariyama 2004a).
Key to species of the genus Tethylembos in the world (adult males)
1. Pereopod 5, posterodistal part of basis excavated.............................................. T. cavatus sp. nov.
- Pereopod 5, posterior margin of basis smooth............................................................... 2
2. Coxa 1 anteroventral corner weakly projected, gnathopod 1 propodus ca. 1.5–1.8 times length of carpus............................................................................................... T. japonicus Ariyama, 2004
- Coxa 1 anteroventral corner acutely projected, gnathopod 1 propodus ca. 1.2–1.5 times length of carpus.............................................................................................. T. viguieri (Chevreux, 1911)
description: Published as part of Ariyama, Hiroyuki & Kodama, Masafumi, 2024, Three species of the family Aoridae Stebbing, 1899 (Crustacea: Amphipoda) collected from remote islands in southern Japan, with a key to all Japanese species of the family, pp. 500-528 in Zootaxa 5433 (4) on pages 510-512, DOI: 10.11646/zootaxa.5433.4.2, http://zenodo.org/record/10954486
Confinement of the Sun's interior magnetic field: some exact boundary-layer solutions
Creators: name: Wood, T. S.
name: McIntyre, M. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High-latitude laminar confinement of the Sun's interior magnetic field is shown to be possible, as originally proposed by Gough and McIntyre (1998) but contrary to a recent claim by Brun and Zahn (A&A 2006). Mean downwelling as weak as 2x10^-6cm/s -- gyroscopically pumped by turbulent stresses in the overlying convection zone and/or tachocline -- can hold the field in advective-diffusive balance within a confinement layer of thickness scale ~ 1.5Mm ~ 0.002 x (solar radius) while transmitting a retrograde torque to the Ferraro-constrained interior. The confinement layer sits at the base of the high-latitude tachocline, near the top of the radiative envelope and just above the `tachopause' marking the top of the helium settling layer. A family of exact, laminar, frictionless, axisymmetric confinement-layer solutions is obtained for uniform downwelling in the limit of strong rotation and stratification. A scale analysis shows that the flow is dynamically stable and the assumption of laminar flow realistic. The solution remains valid for downwelling values of the order of 10^-5cm/s but not much larger. This suggests that the confinement layer may be unable to accept a much larger mass throughput. Such a restriction would imply an upper limit on possible internal field strengths, perhaps of the order of hundreds of gauss, and would have implications also for ventilation and lithium burning. The solutions have interesting chirality properties not mentioned in the paper owing to space restrictions, but described at http://www.atmos-dynamics.damtp.cam.ac.uk/people/mem/papers/SQBO/solarfigure.html
description: 6 pages, 3 figures, to appear in conference proceedings: Unsolved Problems in Stellar Physics
Optical production of stable ultracold Sr288 molecules
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2012
Subjects: physics.atom-ph
quant-ph

description: We have produced large samples of stable ultracold Sr288 molecules in the electronic ground state in an optical lattice. The fast, all-optical method of molecule creation involves a near-intercombination-line photoassociation pulse followed by spontaneous emission with a near-unity Franck-Condon factor. The detection uses excitation to a weakly bound electronically excited vibrational level corresponding to a very large dimer and yields a high-Q molecular vibronic resonance. This is the first of two steps needed to create deeply bound Sr288 for frequency metrology and ultracold chemistry. © 2012 American Physical Society.
Southern wide very low-mass stars and brown dwarfs in resolved binary and multiple systems
Creators: name: Caballero, José Antonio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results of the Koenigstuhl survey in the Southern Hemisphere are presented. I have searched for common-proper motion companions to 173 field very low-mass stars and brown dwarfs with spectral types > M5.0V and magnitudes J <= 14.5 mag. I have measured for the first time the common-proper motion of two new wide systems containing very low-mass components, Koenigstuhl 2 AB and 3 A-BC. Together with Koenigstuhl 1 AB and 2M0126-50AB, they are among the widest systems in their respective classes (r = 450-11900 AU). Koenigstuhl 3 A-BC contains a well-known F8V star and a M8.0+L3.0V tight binary. I have determined the minimum frequency of field wide multiples (r > 100 AU) with late-type components at 5.0+/-1.8 % and the frequency of field wide late-type binaries with mass ratios q > 0.5 at 1.2+/-0.9 %. These values represent a key diagnostic of evolution history and low-mass star and brown-dwarf formation scenarios. Additionally, the proper motions of 76 field very low-mass dwarfs are measured here for the first time.
description: ApJ, in press
Electroweak Phase Transitions with BSM Fermions
Creators: name: Gabelmann, Martin
name: Mühlleitner, M. Margarete
name: Müller, Jonas
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the impact of additional beyond-the-Standard Model (BSM) fermions, charged under the Standard Model (SM) $SU(2)_L \otimes U(1)_Y$ gauge group, on the electroweak phase transition (EWPT) in a 2-Higgs-Doublet-Model (2HDM) of type II. We find that the strength of the EWPT can be enhanced by about 40% compared to the default 2HDM. Therefore, additional light fermions are a useful tool to weaken the tension between increasing mass constraints on BSM scalars and the requirement of additional light scalar degrees of freedom to accommodate a strong first order EWPT. The findings are of particular interest for a variety of (non-minimal) split supersymmetry scenarios which necessarily introduce additional light fermion degrees of freedom.
Anisotropy-induced Feshbach resonances in a quantum dipolar gas of highly magnetic atoms
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2012
Subjects: physics.atom-ph
quant-ph

description: We explore the anisotropic nature of Feshbach resonances in the collision between ultracold highly magnetic submerged-shell dysprosium atoms in their energetically lowest magnetic sublevel, which can only occur due to couplings to rotating bound states. This is in contrast to well-studied alkali-metal atom collisions, where broadest (strongest) Feshbach resonances are hyperfine induced and due to rotationless bound states. Our first-principle coupled-channel calculation of the collisions between these spin-polarized bosonic dysprosium atoms reveals a strong interplay between the anisotropies in the dispersion and magnetic dipole-dipole interaction. The former anisotropy is absent in alkali-metal and chromium collisions. We show that both types of anisotropy significantly affect the Feshbach spectrum as a function of an external magnetic field. Effects of the electrostatic quadrupole-quadrupole interaction are small. Over a 20 mT magnetic field range, we predict about 10 Feshbach resonances and show that the resonance locations depend on the dysprosium isotope. © 2012 American Physical Society.
Flotation characteristics of arsenopyrite
Creators: name: Vreugde, Morris Johannes Aloysius
Publisher: name: University of British Columbia
Year: 2010

description: Electrochemical methods, surface spectroscopy and flotation tests have been used to study the influence of the oxidation of arsenopyrite on its floatability with xahthate. Cyclic voltammetric studies indicated that the oxidation of arsenopyrite at pH greater than 7 results in the formation of ferric hydroxide deposits on the surface of the mineral. Arsenic is oxidized to arsenate and sulphur is oxidized to sulphate. The arsenate is incorporated in the ferric hydroxide deposits while sulphate diffuses into solution. Below pH=7, soluble iron species are formed and the surface becomes increasingly covered with elemental sulphur with decreasing pH. Increasing temperature has no influence on the quantity of hydroxide formed over the range 30° to 45°C but results in thick, porous films at temperature greater than 45°C. The oxidation of arsenopyrite was demonstrated to occur at lower oxidation potentials than for pyrite although this effect decreased with increasing temperature. Mixed potential studies indicated that the potentials required for arsenopyrite oxidation could be achieved with common oxidizing agents. Selective oxidation of arsenopyrite in a bulk pyrite-arsenopyrite concentrate was indicated to be possible. The formation of iron hydroxide deposits on the surface of arsenopyrite resulted in the inhibition of subsequent oxidation of xanthate to dixanthogen at the mineral's surface. ESCA studies confirmed the formation of oxidized iron layers at the surface of arsenopyrite and revealed that essentially all the arsenate which was formed was incorporated in these layers. Sulphur became oxidized at the pH studied and to a large extent went into solution. Flotation studies demonstrated the use of oxidation for arsenopyrite depression. In the presence of oxidation, increasing pH above pH=7 resulted in increased arsenopyrite depression while increasing temperature had little effect until a temperature of 40°C was exceeded. Previously activated arsenopyrite could be depressed through the use of oxidizing agents. Arsenopyrite could be selectively depressed from a bulk pyrite-arsenopyrite concentrate through the use of oxidizing agents.