cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Arecibo Legacy Fast ALFA (ALFALFA) Extragalactic HI Survey
Creators: name: Haynes, Martha P.
name: Team, the ALFALFA
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Arecibo Legacy Fast ALFA (ALFALFA) survey is a program aimed at obtaining a census of HI-bearing objects over a cosmologically significant volume of the local universe. When complete in ~3-4 years, it will cover 7000 square degrees of high latitude sky using the 305m telescope and the seven-beam Arecibo L-band feed array (ALFA). As of May 1, 2008, almost 60% of the required observations are complete and a catalog exists in preliminary form for 25% of the final sky area. ALFALFA is detecting about twice as many HI sources as predicted based on previously published HI mass functions and should deliver a final catalog of >25000 extragalactic HI sources. ALFALFA will detect hundreds of galaxies with HI masses less than 10**7.5 solar masses and similarly large numbers greater than 10**10.3 Msun. Its centroiding accuracy allows for the immediate identification of highly probably optical counterparts to each HI detection. Fewer than 3% of all extragalactic HI sources, and < 1% of ones with HI masses > 10**9.5 Msun cannot be identified with a stellar counterpart. The hundreds of HI sources with observed line widths of 20-30 km/s include a population of optically faint dwarf galaxies. The objects with highest HI masses exhibit a range of morphologies, optical colors and surface brightnesses, but most appear to be massive disk systems. The latter represent the population likely to dominate future studies of HI at high redshift.
description: To appear in AIP Conference Proceedings, "The Evolution of Galaxies through the Neutral Hydrogen Window", Feb 1-3 2008, Arecibo, Puerto Rico, eds. R. Minchin & E. Momjian. 3 pages
The synthesis of myosin mRNA and myosin in the early development of Xenopus laevis embryos
Creators: name: Kreis, Christophe G.
Publisher: name: University of British Columbia
Year: 2010

description: A biochemical approach was used to detect the appearance of the heavy chain of skeletal myosin (HCSM) and myosin mRNA during the early development of Xenopus laevis embryos. An antibody against the HCSM of adult X. laevis muscles was biochemically characterized and shown to be monospecific. This anti-myosin antibody reacted with embryonic polysomes synthesizing myosin and with tadpole tail myosin. This indicates that the myosins of adult muscles, early embryonic muscles and tadpole tails are sufficiently homologous to share some antigenic determinants. Polysomes from various stages of X. laevis embryogenesis were reacted with the anti-myosin antibody. Analysis of these reactions showed that myosin synthesis begins in stage 20 embryos, in which about 7 somites have segregated. The RNA from stage 12, stage 16/17 and stage 20 embryos was then analyzed for the presence of the heavy chain myosin mRNA in order to determine whether the synthesis of myosin is under translational or transcriptional control. Total RNA preparations from staged embryos were fractionated on oligo(dT)-cellulose columns and fractions that did and did not bind were translated in a wheat germ cell-free protein synthesizing system. The translational products were precipitated with the anti-myosin antibody and characterized biochemically. Myosin mRNA was detected by this method in stage 16/17 embryos. We conclude that somite segregation results in the appearance of new myosin mRNA molecules in X. laevis embryos. It seems likely, by all the evidence considered, that a large pool of untranslated myosin mRNA molecules is not responsible for muscle myosin synthesis. Therefore, the synthesis of certain proteins in early development is under transcriptional control.
Experimental quantum key distribution with an untrusted source
Creators: name: Peng, Xiang
name: Jiang, Hao
name: Xu, Bingjie
name: Ma, Xiongfeng
name: Guo, Hong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The photon statistics of a quantum key distribution (QKD) source is crucial for security analysis. In this paper, we propose a practical method, with only a beam splitter and photodetector involved, to monitor the photon statistics of a QKD source. By implementing in a Plug&Play QKD system, we show that the method is highly practical. The final secure key rate is 52 bit/s, comparing to 78 bit/s when the source is treated as a trusted source.
description: 8 pages, 3 figures
Topological hybrid semimetal phases and anomalous Hall effects in a three dimensional magnetic topological insulator
Creators: name: Chen, M. N.
name: Chen, W. C.
name: Zhou, Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, we propose a ferromagnetic Bi$_2$Se$_3$ as a candidate to hold the coexistence of Weyl- and nodal-line semimetal phases, which breaks the time reversal symmetry. We demonstrate that the type-I Weyl semimetal phase, type-I-, type-II- and their hybrid nodal-line semimetal phases can arise by tuning the Zeeman exchange field strength and the Fermi velocity. Their topological responses under U(1) gauge field are also discussed. Our results raise a new way for realizing Weyl and nodal-line semimetals and will be helpful in understanding the topological transport phenomena in three-dimensional material systems.
Possible two-gap superconductivity in NdFeAs(O,F) probed by point-contact Andreev-reflection spectroscopy
Creators: name: Samuely, P.
name: Szabo, P.
name: Pribulova, Z.
name: Tillman, M. E.
name: Bud'ko, S.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Systematic studies of the NdFeAsOF superconducting energy gap via the point-contact Andreev-reflection (PCAR) spectroscopy are presented. The PCAR conductance spectra show at low temperatures a pair of gap-like peaks at about 4 - 7 mV indicating the superconducting energy gap and in most cases also a pair of humps at around 10 mV. Fits to the s-wave two-gap model of the PCAR conductance allowed to determine two superconducting energy gaps in the system. The energy-gap features however disappear already at T* = 15 to 20 K, much below the particular Tc of the junction under study. At T* a zero-bias conductance (ZBC) peak emerges, which at higher temperatures usually overwhelms the spectrum with intensity significantly higher than the conductance signal at lower temperatures. Possible causes of this unexpected temperature effect are discussed. In some cases the conductance spectra show just a reduced conductance around the zero-bias voltage, the effect persisting well above the bulk transition temperature. This indicates a presence of the pseudogap in the system.
description: Revised paper, 6 pages, 5 figures, accepted for Supercond. Sci. & Technol. Special issues: Anisotropic and multiband pairing: from borides to multicomponent superconductivity. Expected online publication: December 2008 (print: January 2009)
An evaluation of domestic food hygiene and food preparation practices
Creators: name: Worsfold, Denise
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Food sciences not elsewhere classified

description: The aim of this investigation was to evaluate the hygiene of domestic food preparation practices. The traditional survey approach used to study this behaviour has problems of interpretation and verification. In this study direct observation, supplemented with food temperature measurements was used to gather information for the purpose of developing an understanding of the causes of domestic food poisoning.
 The food handling practices of 108 people preparing foods commonly implicated in outbreaks of food poisoning were analysed. A HACCP approach was employed and a standard measure of hygienic food handling behaviour, the Food Safety Risk Score, (FSR) was devised. The FSR score indicated the extent of the use of appropriate control measures during food preparation. The higher the score the greater the risk of unsafe food being produced. Scores expressed as a percentage, ranged from 0 to 65% with over half of the subjects scoring below 20%. More than half (60%) of the people cooked in advance of consumption but most (85%) cooked the food thoroughly. Few used any method to speed the cooling of cooked food. Temperature abuse during food transport and storage was exhibited by more than 40% of people. Cooked food was held at ambient temperature for prolonged periods by 19% of the people and was re-heated inadequately by 11%. The standard of personal hygiene of some participants was low.
 An assessment of the cleanliness of the domestic kitchen and the condition of equipment and surfaces used in food preparation, based on ATP measurements and a kitchen check- list showed that there was a wide variation in the standards found in homes. The great potential for indirect and direct cross contamination in the domestic kitchen was highlighted.
 The problems involved in persuading people to practise well-known food hygiene principles are considered and recommendations for improving domestic food hygiene are made.
Helictonema velutinum N. Halle
Creators: name: Coughenour, Jennifer M.
name: Simmons, Mark P.
name: Lombardi, Julio A.
name: Yakobson, Kendra
name: Archer, Robert H.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Celastrales
Celastraceae
Helictonema
Helictonema velutinum

description: ; Helictonema velutinum (Afzel.) Pierre ex N.Hallé — R. Spichiger 6910, Ivory Coast (MO); 26S rDNA HM230080;
description: Published as part of Coughenour, Jennifer M., Simmons, Mark P., Lombardi, Julio A., Yakobson, Kendra & Archer, Robert H., 2011, Phylogeny of Celastraceae subfamily Hippocrateoideae inferred from morphological characters and nuclear and plastid loci, pp. 320-330 in Molecular Phylogenetics and Evolution 59 (2) on page 327, DOI: 10.1016/j.ympev.2011.02.017, http://zenodo.org/record/5155694
Some mass relations for mesons and baryons in Regge phenomenology
Creators: name: Guo, Xin-Heng
name: Wei, Ke-Wei
name: Wu, Xing-Hua
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In the quasilinear Regge trajectory ansatz, some useful linear mass inequalities, quadratic mass inequalities and quadratic mass equalities are derived for mesons and baryons. Based on these relations, mass ranges of some mesons and baryons are given. The masses of bc-bar and ss-bar belonging to the pseudoscalar, vector and tensor meson multiplets are also extracted. The J^P of the baryon Xi_cc(3520) is assigned to be 1/2^+. The numerical values for Regge slopes and intercepts of the 1/2^+ and 3/2^+ SU(4) baryon trajectories are extracted and the masses of the orbital excited baryons lying on the 1/2^+ and 3/2^+ trajectories are estimated. The J^P assignments of baryons Xi_c(2980), Xi_c(3055), Xi_c(3077) and Xi_c(3123) are discussed. The predictions are in reasonable agreement with the existing experimental data and those suggested in many other different approaches. The mass relations and the predictions may be useful for the discovery of the unobserved meson and baryon states and the J^P assignment of these states.
description: 41 pages, 1 figure, Latex
Business cycles on a sub-national level: Measuring regional industrial cycles by using the leading economic indicators' approach as a way of solving the absence of industrial production indexes' data
Creators: name: Cohan, Pablo Pedro
name: D´Jorge, María Lucrecia
name: Sagua, Carolina
Publisher: name: CIRET
Year: 2010
Subjects: subject: (4-(m-Chlorophenylcarbamoyloxy)-2-butynyl)trimethylammonium Chloride/economics

description: Because of its theoretical importance, in order to study how business cycles behave, data referred to the industrial sector is still part of any methodological approach’s core. At the same time, industrial production indexes are mostly the indicators that submit this information and that’s why they are being used in almost any national monthly composite coincident index around the world.

On the other hand for those who study business cycles on a sub national level, especially in Latin-America, a frequent problem to resolve is that industrial indexes are mostly calculated on a national aggregate level while states and cities rarely produce industrial output indicators.

The following document exposes the methodological bases followed by the authors as a contribution in measuring monthly coincident economic activity on a sub-national level facing the fact that there is not any available indicator which can efficiently resolve the absence of a standard industrial production index.

Our research shows how to capture the industrial cycle’s flow by using the economic leading indicators approach upon a group of representative time series creating an industrial monthly indicator that can be used as part of the regional coincident index.

Once the representative group of series is selected, we test two methodologies in order to generate our new industrial indicator: the internationally known one used by The Conference Board (TCB) and one created by Dr. Mario Jorrat at the University of Tucumán, in Argentina.

Finally, we discuss how traditional weights used by industrial production indexes derived from proportions in the total value-added output could not necessary  represent the best criteria in order to aggregate series with the purpose of measuring business cycles.
Conference Summary: HI Science in the Next Decade
Creators: name: Haynes, Martha P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The atomic hydrogen (HI) 21cm line measures the gas content within and around galaxies, traces the dark matter potential and probes volumes and objects that other surveys do not. Over the next decade, 21cm line science will exploit new technologies, especially focal plane and aperture arrays, and will see the deployment of Epoch of Reionization/Dark Age detection experiments and Square Kilometer Array (SKA) precursor instruments. Several experiments designed to detect and eventually to characterize the reionization history of the intergalactic medium should deliver first results within two-three years time. Although "precision cosmology" surveys of HI in galaxies at z ~ 1 to 3 require the full collecting area of the SKA, a coherent program of HI line science making use of the unique capabilities of both the existing facilities and the novel ones demonstrated by the SKA precursors will teach us how many gas rich galaxies there really are and where they reside and will yield fundamental insight into how galaxies accrete gas, form stars and interact with their environment.
description: To appear in AIP Conference Proceedings, "The Evolution of Galaxies through the Neutral Hydrogen Window", Feb 1-3 2008, Arecibo, Puerto Rico, eds. R. Minchin & E. Momjian. 8 pages
The development of new and improved methods for downstream purification of proteins and enzymes from crude mixtures
Creators: name: Isgrove, Frances
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Other health sciences not elsewhere classified

description: New economically viable methods for the industrial scale production and processing of proteins are constantly being sought. This project concentrates on two techniques which may be utilised in the purification of non-recombinant proteins.
 First, aqueous two-phase systems were investigated as a potential tool for the separation of individual proteose peptones from a total proteose peptone fraction of bovine milk. The optimum pH for the separation of Î²-CN-5P from the total proteose peptone components was
 pH7. Aqueous two-phase systems containing PEG with a mean molecular weight of less than 8000 were not found to separate the total proteose peptone components. The addition of sodium chloride into the aqueous two-phase systems encouraged a more effective extraction of Î²-CN-5P, although this effect was found to plateau at 5% NaCl.
 Second, a model enzyme was immobilised onto nylon film and the optimisation of binding conditions was studied using spectrophotometric procedures. Results suggested that slight variations in the concentration of the incubating solutions had a profound effect on the efficacy of the procedure. Additionally, a considerable quantity of observed binding appeared to be due to non-specific interactions between the ligand and the matrix. This binding was investigated and was found to be a result of both ionic and hydrophobic interactions.
Bouncing and cyclic string gas cosmologies
Creators: name: Greene, Brian
name: Kabat, Daniel
name: Marnerides, Stefanos
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that, in the presence of a string gas, simple higher-derivative modifications to the effective action for gravity can lead to bouncing and cyclic cosmological models. The modifications bound the expansion rate and avoid singularities at finite times. In these models the scale factors can have long loitering phases that solve the horizon problem. Adding a potential for the dilaton gives a simple realization of the pre-big bang scenario. Entropy production in the cyclic phase drives an eventual transition to a radiation-dominated universe. As a test of the Brandenberger-Vafa scenario, we comment on the probability of decompactifying three spatial dimensions in this class of models.
description: 35 pages, LaTeX, 9 figures. v2: additional references. v3: comments on Einstein frame, version to appear in PRD
Superconductivity above 50 K in Tb$_{1-x}$Th$_{x}$FeAsO
Creators: name: Li, Lin-jun
name: Li, Yu-ke
name: Ren, Zhi
name: Luo, Yong-kang
name: Lin, Xiao
name: He, Mi
name: Tao, Qian
name: Zhu, Zeng-wei
name: Cao, Guang-han
name: Xu, Zhu-an
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have successfully synthesized one member of LnFeAsO (Ln stands for lanthanides) with Ln=Tb. By partial substitution of Tb$^{3+}$ by Th$^{4+}$, superconductivity with onset $T_{c}$ up to 52 K was observed. In the undoped parent compound, the magnetic moments of Tb$^{3+}$ ions order antiferromagnetically (AFM) at $T_N$ of 2.5 K, and there exists an anomaly in the resistivity at $T^*$ of about 124 K which corresponds to the structural phase transition and/or AFM ordering of magnetic moments of Fe$^{2+}$ ions. This anomaly is severely suppressed by Th doping, similar to the cases of F doped LnFeAsO series. Thermopower measurements show that the charge carrier is electron-like for both undoped and Th doped compounds, and enhanced thermopower in Th doped samples was observed.
description: 4 pages, 4 figures; minor changes, typos corrected; PRB (in press)
Hippocratea volubilis L.
Creators: name: Coughenour, Jennifer M.
name: Simmons, Mark P.
name: Lombardi, Julio A.
name: Yakobson, Kendra
name: Archer, Robert H.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Celastrales
Celastraceae
Hippocratea
Hippocratea volubilis

description: Hippocratea volubilis L. — J.F. Castrejon et al. 949, Mexico (MO); ITS rDNA HM230127, trnL intron HM230218, trnL-F spacer HM230263;
description: Published as part of Coughenour, Jennifer M., Simmons, Mark P., Lombardi, Julio A., Yakobson, Kendra & Archer, Robert H., 2011, Phylogeny of Celastraceae subfamily Hippocrateoideae inferred from morphological characters and nuclear and plastid loci, pp. 320-330 in Molecular Phylogenetics and Evolution 59 (2) on page 327, DOI: 10.1016/j.ympev.2011.02.017, http://zenodo.org/record/5155694
Implementation of holonomic quantum gates by an isospectral deformation of an Ising dimer chain
Creators: name: Ota, Yukihiro
name: Bando, Masamitsu
name: Kondo, Yasusi
name: Nakahara, Mikio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We exactly construct one- and two-qubit holonomic quantum gates in terms of isospectral deformations of an Ising model Hamiltonian. A single logical qubit is constructed out of two spin-1/2 particles; the qubit is a dimer. We find that the holonomic gates obtained are discrete but dense in the unitary group. Therefore an approximate gate for a desired one can be constructed with arbitrary accuracy.
description: 6 pages, 5 figures
Horizon surface gravity as 2d geodesic expansion
Creators: name: Jacobson, Ted
name: Parentani, Renaud
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The surface gravity of any Killing horizon, in any spacetime dimension, can be interpreted as a local, two-dimensional expansion rate seen by freely falling observers when they cross the horizon. Any two-dimensional congruence of geodesics invariant under the Killing flow can be used to define this expansion, provided that the observers have unit Killing energy.
description: 7 pages; v2: 8 pages, derivation of (8) in section 3 streamlined, added new expression for the 2d expansion, minor editing
Abundances and Isotope Ratios in the Magellanic Clouds: The Star Forming Environment of N113
Creators: name: Wang, M.
name: Chin, Y. -N.
name: Henkel, C.
name: Whiteoak, J. B.
name: Cunningham, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With the goal of deriving the physical and chemical conditions of star forming regions in the Large Magellanic Cloud (LMC), a spectral line survey of the prominent star forming region N113 is presented. The observations cover parts of the frequency range from 85 GHz to 357 GHz and include 63 molecular transitions from a total of 16 species, among them spectra of rare isotopologues. Maps of selected molecular lines as well as the 1.2 mm continuum distribution are also presented. Molecular abundances in the core of the complex are found to be consistent with a photon dominated region (PDR) that is nitrogen deficient, with the potential exception of N2H+. Densities range from 5x10^3 cm-3 for CO to almost 10^6 for CS and HCN, indicating that only the densest regions provide sufficient shielding even for some of the most common species. An ortho- to para-H_2CO ratio of ~3 hints at H_2CO formation in a warm (>=40 K) environment. Isotope ratios are 12C/13C ~ 49+-5, 16O/18O ~ 2000+-250, 18O/17O ~ 1.7+-0.2 and 32S/34S ~ 15. Agreement with data from other star forming clouds shows that the gas is well mixed in the LMC . The isotope ratios do not only differ from those seen in the Galaxy. They also do not form a continuation of the trends observed with decreasing metallicity from the inner to the outer Galaxy. This implies that the outer Galaxy, is not providing a transition zone between the inner Galaxy and the metal poor environment of the Magellanic Clouds. A part of this discrepancy is likely caused by differences in the age of the stellar populations in the outer Galaxy and the LMC.
description: 50 pages, 13 figures, accepted for publication in ApJ
On the resonance eigenstates of an open quantum baker map
Creators: name: Keating, J. P.
name: Nonnenmacher, S.
name: Novaes, M.
name: Sieber, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the resonance eigenstates of a particular quantization of the open baker map. For any admissible value of Planck's constant, the corresponding quantum map is a subunitary matrix, and the nonzero component of its spectrum is contained inside an annulus in the complex plane, $|z_{min}|\leq |z|\leq |z_{max}|$. We consider semiclassical sequences of eigenstates, such that the moduli of their eigenvalues converge to a fixed radius $r$. We prove that, if the moduli converge to $r=|z_{max}|$, then the sequence of eigenstates converges to a fixed phase space measure $ρ_{max}$. The same holds for sequences with eigenvalue moduli converging to $|z_{min}|$, with a different limit measure $ρ_{min}$. Both these limiting measures are supported on fractal sets, which are trapped sets of the classical dynamics. For a general radius $|z_{min}|< r < |z_{max}|$, we identify families of eigenstates with precise self-similar properties.
description: 32 pages, 2 figures
Ermanno Raeli
Creators: name: De Roberto, Federico
Publisher: name: INFN Open Access Repository
Year: 2021
Subjects: de roberto
unict
printed draft

description: Bozza del racconto pubblicato dalla libreria editrice galli di c. chiesa e f. guindaini a milano nel 1889, conservato nel fondo posseduto dalla biblioteca della società di storia patria per la sicilia orientale di catania; poi romanzo, nuova edizione riveduta con l'aggiunta di un avvertimento e di un'appendice in due parti, contenente liriche di p. bourget, tradotte e tratte da aveux, milano-roma, mondadori, 1993 e coll. gli azzurri, 1933; traduzioni: (in tedesco) herman raeli, deutsche verlags-anstalt, stuttgart, leipzig 1894
description: la.mu.s.a. - ex facoltà di lettere e filosofia - università degli studi di catania - società di storia patria per la sicilia orientale; busta 02
Anomalous Diffusion in a Monolayer of Lightweight Spheres Fluidized in Airflow
Creators: name: Koyama, Shihori
name: Matsuno, Tomoki
name: Noguchi, Takashi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper presents statistical analyses of random motions in a single layer of fluidized lightweight spherical particles. Foam polystyrene spheres were driven by an upward airflow through the sieve mesh, and their two-dimensional motion was acquired using image analysis. In the bulk region, the particle velocity distributions changed from Gaussian to heavy-tailed distribution as the bulk packing fraction $ϕ_b$ was increased. The mean square displacement of the particles exhibited transition to subdiffusion at much lower $ϕ_b$ than observed in previous studies using similar setup but with heavier particles. A slight superdiffusion and significant growth of the correlation length in the two-body velocity correlation was observed at further large $ϕ_b$. The effect of the wall on the dynamics of the particles was also investigated and the anisotropy of the granular temperature was found to be a useful index to discriminate between the wall region and the bulk. The turbulence statistics in the wake of a particle indicated a strong wall-normal asymmetry of aerodynamic forcing as the ``thermal'' agitation in the wall region.
description: Accepted for publication in Physical Review E
Hippocratea volubilis L.
Creators: name: Coughenour, Jennifer M.
name: Simmons, Mark P.
name: Lombardi, Julio A.
name: Yakobson, Kendra
name: Archer, Robert H.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Celastrales
Celastraceae
Hippocratea
Hippocratea volubilis

description: Hippocratea volubilis L. — J.A. Lombardi 6923, Brazil (HRCB); 26S rDNA HM230081, ITS rDNA HM230128, matK HM230173, trnL intron HM230219, trnL-F spacer HM230264;
description: Published as part of Coughenour, Jennifer M., Simmons, Mark P., Lombardi, Julio A., Yakobson, Kendra & Archer, Robert H., 2011, Phylogeny of Celastraceae subfamily Hippocrateoideae inferred from morphological characters and nuclear and plastid loci, pp. 320-330 in Molecular Phylogenetics and Evolution 59 (2) on page 327, DOI: 10.1016/j.ympev.2011.02.017, http://zenodo.org/record/5155694
Engaging science: A performance and accountability framework for Scotland's science centres
Creators: name: Jennings, Paul
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Research, science and technology policy

description: Awarded Doctor of Business Administration Science is critical to the knowledge economy and UK science centres, many of which appeared in the new millennium, are perceived an effective vehicle for the promotion of public engagement with science (PES). Following trading difficulties in 2004 Scotland's four science centres (Dundee Science Centre, Glasgow Science Centre, Our Dynamic Earth and Satrosphere) entered into a funding relationship with the Scottish Executive (now Government) which also effectively created the Scottish Science Centres Network (SSCN) - the first national network of science centres in Europe. The early funding model employed by the government involved deficit-funding centres resulting in the centres losing most money receiving most funding. Informed by several independent reviews, the Scottish Government is now adopting a performance-based funding model. However such a model required a performance framework and key performance indicators (KPls) for the SSCN which, to date, has proved elusive despite several cyclical attempts. The principal research question underpinning this study is: How can government funding of science centres better facilitate government policy on PES? Drawing on the experience of an international knowledge-community of senior science centre professionals, over two rounds of interviews, a significant amount of data on the alternative funding models and composite performance indicators was collected. This data was fed into two meetings of the senior representatives of the SSCN and led to the development of a new performance framework for the SSCN complete with seventeen KPls. This represents an important milestone in advancing SSCN efforts to better demonstrate their economy, efficiency and effectiveness in return for continuing public funding.
 The framework is of sufficient generality to be of benefit to science centres outside Scotland and notably those centres who have still to convince their governments of the contribution they could make to advancing government's growing interest in PES in return for a funding relationship.
Complementarity of the CERN Large Hadron Collider and the $e^+e^-$ International Linear Collider
Creators: name: Choi, S. Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The next-generation high-energy facilities, the CERN Large Hadron Collider (LHC) and the prospective $e^+e^-$ International Linear Collider (ILC), are expected to unravel new structures of matter and forces from the electroweak scale to the TeV scale. In this report we review the complementary role of LHC and ILC in drawing a comprehensive and high-precision picture of the mechanism breaking the electroweak symmetries and generating mass, and the unification of forces in the frame of supersymmetry.
description: 14 pages, 17 figures, to be published in "Supersymmetry on the Eve of the LHC", a special volume of European Physical Journal C, Particles and Fields (EPJC) in memory of Julius Wess
Productivity analysis and functional specification : a parametric approach
Creators: name: Khaled, Mohammed Saifuddin
Publisher: name: University of British Columbia
Year: 2010

description: This dissertation proposes to develop a functional specification of the cost function which can be used to discriminate among the alternative flexible functional forms and to analyze productivity growth. The problem of choosing among alternative functional forms is tackled by developing a nested representation which takes as special cases several well known forms. Productivity growth is analyzed by considering input price effects, non-neutral scale effects and biased technical change. Total factor productivity (TFP) is used as an index of technical change. Traditionally, the rate of TFP growth has been computed, assuming constant returns to scale, as the residual of the rate of growth of real output minus the rate of growth of aggregate real input. The parametric approach to productivity analysis adopted here allows estimation of the TFP growth rate without requiring constant returns to scale. The stochastic specification of the model incorporates errors arising out of imperfect cost minimizing behaviour. The resulting likelihood function is continuous in all the parameters. A four input version of the model has been used to estimate the total U.S. Manufacturing Technology, 1947-71. The inputs are capital, labour, energy and other intermediate materials. The parameters of the model have been estimated by utilizing the maximum likelihood method. The main hypotheses tested are neutrality of technical change and homotheticity. This investigation suggests that total U.S. Manufacturing, 1947-71 may be characterized by non-neutral scale effects and biased technical change. The scale effects have been capital, labour and energy saving while technical progress has been capital and energy using and labour neutral. The elasticity results indicate that capital and labour are substitutes as are labour and energy while capital and energy are complements. Capital and energy are more own price elastic than labour. Scale economies seem to have contributed considerably to productivi growth in total U.S. Manufacturing, 1947-71. The contribution of total factor productivity is, however, uncertain and perhaps small.
Radiation-Dominated Disks Are Thermally Stable
Creators: name: Hirose, Shigenobu
name: Krolik, Julian H.
name: Blaes, Omer
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: When the accretion rate is more than a small fraction of Eddington, the inner regions of accretion disks around black holes are expected to be radiation-dominated. However, in the alpha-model, these regions are also expected to be thermally unstable. In this paper, we report two 3-d radiation MHD simulations of a vertically-stratified shearing box in which the ratio of radiation to gas pressure is ~ 10, and yet no thermal runaway occurs over a timespan ~ 40 cooling times. Where the time-averaged dissipation rate is greater than the critical dissipation rate that creates hydrostatic equilibrium by diffusive radiation flux, the time-averaged radiation flux is held to the critical value, with the excess dissipated energy transported by radiative advection. Although the stress and total pressure are well-correlated as predicted by the alpha-model, we show that stress fluctuations precede pressure fluctuations, contrary to the usual supposition that the pressure controls the saturation level of the magnetic energy. This fact explains the thermal stability. Using a simple toy-model, we show that independently-generated magnetic fluctuations can drive radiation pressure fluctuations, creating a correlation between the two while maintaining thermal stability.
description: Accepted by ApJ
The spread, persistence and survival of salmonella and campylobacter in the domestic kitchen
Creators: name: Slader, Jenny
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Food sciences not elsewhere classified

description: This thesis investigates the exposure risk of Salmonella and Campylobacter following the preparation of a chicken salad in domestic kitchens.
 Methods were first devised, developed and validated to maximise recovery of cells, including those sub-lethally damaged, in order to accurately assess exposure routes.
 Isolation rates of Campylobacter were maximised by delaying the addition of rifampicin and polymyxin and prolonging the incubation period of broths. It was found that isolation of Salmonella was improved when sulphamandelate was added to the pre-enrichment broth.
 Pilot work, utilising these improved isolation methodologies, was then carried out in a test domestic kitchen to determine likely exposure routes and commonly contaminated sites during the preparation of a meal by 30 participants. Using the techniques refined in the pilot study, the food preparation practices of 70 participants were studied preparing the same salad in their home. A total of 609 samples were taken and contamination by Campylobacter was found to be relatively common with 13% of participants contaminating the kitchen or the prepared salad. The raw chicken breasts used to prepare the salad were the most significant source of contamination; 90% were contaminated with high numbers of Campylobacter, 6% were contaminated with Salmonella. Commonly contaminated items included the salads and wiping cloths. The most common exposure routes were due to the inadequate washing / drying of hands, chopping boards and knifes.
 In order to accurately assess the risks associated with the widespread contamination of Campylobacter spp., their ability to survive on simulated kitchen work-surfaces was compared with Salmonella spp.. Salmonella was found to survive significantly better than Campylobacter after two hours of air drying (P: 0.001). Differences in the ability of some Campylobacter strains to survive air drying were also found to be significant.
 It is suggested that the results of this thesis could be used to determine exposure assessment and quantitative risk assessment in the domestic kitchen in order to prioritise and target food safety messages.
Inelastic Scattering from Local Vibrational Modes
Creators: name: Dóra, Balázs
name: Gulácsi, Miklós
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study a nonuniversal contribution to the dephasing rate of conduction electrons due to local vibrational modes. The inelastic scattering rate is strongly influenced by multiphonon excitations, exhibiting oscillatory behaviour. For higher frequencies, it saturates to a finite, coupling dependent value. In the strong coupling limit, the phonon is almost completely softened, and the inelastic cross section reaches its maximal value. This represents a magnetic field insensitive contribution to the dephasing time in mesoscopic systems, in addition to magnetic impurities.
description: 5 pages, 3 figures
Hylenaea comosa Miers
Creators: name: Coughenour, Jennifer M.
name: Simmons, Mark P.
name: Lombardi, Julio A.
name: Yakobson, Kendra
name: Archer, Robert H.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Celastrales
Celastraceae
Hylenaea
Hylenaea comosa

description: Hylenaea comosa (Sw.) Miers — J.A. Lombardi 6400, Brazil (HRCB); 26S rDNA HM230082, ITS rDNA HM230129, matK HM230174, trnL intron HM230220, trnL-F spacer HM230265;
description: Published as part of Coughenour, Jennifer M., Simmons, Mark P., Lombardi, Julio A., Yakobson, Kendra & Archer, Robert H., 2011, Phylogeny of Celastraceae subfamily Hippocrateoideae inferred from morphological characters and nuclear and plastid loci, pp. 320-330 in Molecular Phylogenetics and Evolution 59 (2) on page 327, DOI: 10.1016/j.ympev.2011.02.017, http://zenodo.org/record/5155694
Supermanifolds from Feynman graphs
Creators: name: Marcolli, Matilde
name: Rej, Abhijnan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We generalize the computation of Feynman integrals of log divergent graphs in terms of the Kirchhoff polynomial to the case of graphs with both fermionic and bosonic edges, to which we assign a set of ordinary and Grassmann variables. This procedure gives a computation of the Feynman integrals in terms of a period on a supermanifold, for graphs admitting a basis of the first homology satisfying a condition generalizing the log divergence in this context. The analog in this setting of the graph hypersurfaces is a graph supermanifold given by the divisor of zeros and poles of the Berezinian of a matrix associated to the graph, inside a superprojective space. We introduce a Grothendieck group for supermanifolds and we identify the subgroup generated by the graph supermanifolds. This can be seen as a general procedure to construct interesting classes of supermanifolds with associated periods.
description: 21 pages, LaTeX, 4 eps figures
Unusual electron correlations in NaxCoO2 due to the spin-state quasidegeneracy of cobalt ions
Creators: name: Chaloupka, J.
name: Khaliullin, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent studies exposed many remarkable properties of layered cobaltates NaxCoO2. Surprisingly, many-body effects have been found to increase at sodium-rich compositions of NaxCoO2 where one expects a simple, nearly free motion of the dilute S=1/2 holes doped into a band insulator NaCoO2. Here we discuss the origin of enigmatic correlations that turn a doped NaCoO2 into a strongly correlated electronic system. A minimal model including orbital degeneracy is proposed and its predictions are discussed. The model is based on a key property of cobalt oxides - the spin-state quasidegeneracy of CoO6 octahedral complex - which has been known, e.g., in the context of an unusual physics of LaCoO3 compound. Another important ingredient of the model is the 90-degree Co-O-Co bonding in NaxCoO2 which allows nearest-neighbor $t_{2g}-e_g$ hopping. This hopping introduces a dynamical mixture of electronic configurations $t_{2g}^6, S=0$ and $t_{2g}^5e_g^1, S=1$ of neighboring cobalt ions. We show that scattering of charge carriers on spin-state fluctuations suppresses their coherent motion and leads to the spin-polaron physics at $x\sim 1$. At larger doping when coherent fermionic bands are formed, the model predicts singlet superconductivity of extended s-wave symmetry. The presence of low-lying spin states of Co$^{3+}$ is essential for the pairing mechanism. Implications of the model for magnetic orderings are also discussed.
description: 27 pages, 19 figures, submitted to Progress of Theoretical Physics Supplement
From primordial $^4$He abundance to the Higgs field
Creators: name: Gaßner, Josef M.
name: Lesch, Harald
name: Arenhövel, Hartmuth
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We constrain the possible time variation of the Higgs vacuum expectation value ($v$) by recent results on the primordial $^4$He abundance ($Y_P$). For that, we improve the analytic models of the key-processes in our previous analytic calculation of the primordial $^4$He abundance. Furthermore, the latest results on the neutron decay, the baryon to photon ratio based on 5-year WMAP observations and a new dependence of the deuteron binding energy on $v$ are incorporated. Finally, we approximate the weak freeze-out, the cross section of photo-disintegration of the deuteron, the mean lifetime of the free neutron, the mass difference of neutron and proton, the Fermi coupling constant, the mass of the electron and the binding energy of the deuteron by terms of $v$, to constrain its possible time variation by recent results on the primordial $^4$He abundance: $|\frac{Δv}{v}| ~ \leq 1.5 \cdot 10^{-4}$.
description: Accepted for publication in ApJ
An investigation of visitor and resident place perceptions of Mid Wales, and an evaluation of the potential of such perceptions to shape economic development in the area
Creators: name: Emanuel, Louise
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Tourism resource appraisal

description: The research investigates visitor and resident place perceptions of Mid Wales and evaluates the potential of such perceptions to shape economic development in the area.
 A review of literature indicated a need for an holistic approach to place. It was suggested that a starting point towards achieving this is to envisage place as three components - the real, the expected and the perceived. The real place is described using secondary statistical information and maps of the area. The expected place is described using topographical writing and guide books. The perceived place is examined through a combination of questionnaires and interviews with residents and visitors. These investigate perceptions of the landscape and economy of Mid Wales. The 'perceived places' of residents and visitors are described. A number of agencies based in Mid Wales were also interviewed to examine i) their perceptions of Mid Wales' ii) the way in which visitor and resident perceptions are incorporated into the policy development process, and, iii) their responses to some of the preliminary outcomes of the research.
 The research concluded that both residents and visitors have well defined, but different place perceptions of Mid Wales. Visitor perceptions are more affected by the expected place than the real, whilst resident perceptions are more affected by the real place than the expected. There are currently few mechanisms by which place perceptions are directly incorporated into the development process. However, the place perceptions of agencies were found to be close to those of the groups they represented; it is suggested that place perceptions are fundamental truths shared by groups, which are so strong as to actually subconsciously drive the policy development process. Policy implications are suggested, as are ideas for future research.
Anomalous Hydrogen Recombination-Line Ratios in Ultraluminous Infrared Galaxies
Creators: name: Yano, Kenichi
name: Baba, Shunsuke
name: Nakagawa, Takao
name: Malkan, Matthew
name: Isobe, Naoki
name: Shirahata, Mai
name: Doi, Ryosuke
name: Bhalotia, Vanshree
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We conducted systematic observations of the H I Br$α$ (4.05 $μ$m) and Br$β$ (2.63 $μ$m) lines in 52 nearby ($z<0.3$) ultraluminous infrared galaxies (ULIRGs) with AKARI. Among 33 ULIRGs wherein the lines are detected, three galaxies show anomalous Br$β$/Br$α$ line ratios ($\sim1.0$), which are significantly higher than those for case B (0.565). Our observations also show that ULIRGs have a tendency to exhibit higher Br$β$/Br$α$ line ratios than those observed in Galactic H II regions. The high Br$β$/Br$α$ line ratios cannot be explained by a combination of dust extinction and case B since dust extinction reduces the ratio. We explore possible causes for the high Br$β$/Br$α$ line ratios and show that the observed ratios can be explained by a combination of an optically thick Br$α$ line and an optically thin Br$β$ line. We simulated the H II regions in ULIRGs with the Cloudy code, and our results show that the high Br$β$/Br$α$ line ratios can be explained by high-density conditions, wherein the Br$α$ line becomes optically thick. To achieve a column density large enough to make the Br$α$ line optically thick within a single H II region, the gas density must be as high as $n\sim10^8$ $\mathrm{cm}^{-3}$. We therefore propose an ensemble of H II regions, in each of which the Br$α$ line is optically thick, to explain the high Br$β$/Br$α$ line ratio.
description: 28 pages, 15 figures, accepted for publication in ApJ