cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stenophragma Skuse 1890
Creators: name: Oliveira, Sarah Siqueira
name: Amorim, Dalton de Souza
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Stenophragma

description: Stenophragma Skuse, 1890
 Homapsis Skuse, 1888: 1131, 1191 (preocc. Foerster, 1868). Type-species, H. meridiana Skuse (mon.).
 Stenophragma Skuse, 1890: 612 (nom. nov. for Homapsis Skuse). Type-species, Homapsis meridiana Skuse (aut.).
 Diagnosis (modified from Duret, 1976). Body and legs slender. Wing membrane usually with darker areas, covered with micro- and macrotrichia; macrotrichia widely distributed, sparsely on basal half, densely on apical half; Sc reaching C close to Rs; C ending a short distance after R 5; R 4 present or absent; first sector of CuA very long, twice the length of cubital fork; M 1+2 extremely reduced; M 4 strong curved basally; M 4 and CuA complete and divergent. Anepisternum bare, laterotergite and mediotergite setose. Male gonostyle with two or three main branches, rows of long and short spines organized in different arrangements. Tergite nine more or less rectangular distally, with a clear waist close to apex, more or less membranous, densely covered by short, thin setulae on inner surface.
description: Published as part of Oliveira, Sarah Siqueira & Amorim, Dalton de Souza, 2012, Two New Species of Stenophragma Skuse from Western Australia (Diptera, Mycetophilidae, Sciophilinae), pp. 149-158 in Records of the Australian Museum 64 (2) on page 150, DOI: 10.3853/j.0067-1975.64.2012.1591, http://zenodo.org/record/4684060
Holonomy groups and spacetimes
Creators: name: Hall, G. S.
name: Lonie, D. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A study is made of the possible holonomy group types of a space-time for which the energy-momentum tensor corresponds to a null or non-null electromagnetic field, a perfect fluid or a massive scalar field. The case of an Einstein space is also included. The techniques developed are also applied to vacuum and conformally flat space-times and contrasted with already known results in these two cases. Examples are given.
description: Latex, 14 pages, no figure
Resolutions of Several Puzzles at Intermediate $p_T$ and Recent Developments in Correlation
Creators: name: Hwa, Rudolph C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Some of the puzzles on hadron production at intermediate $p_T$ found at RHIC are explained as natural consequences of parton recombination. In that framework for hadronization the correlation among hadrons produced in jets can be calculated. Some new results on both near-side and away-side jet structures are presented.
description: 5 pages in LaTeX , 0 figures. Talk given at Quark Matter 2005
Controlled manipulation of CNTs in glass/epoxy composites with cut-outs using non-uniform electric field
Creators: name: Pothnis, Jayaram R.
name: Kalyanasundaram, Dinesh
name: Gururaja, Suhasini
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology

description: In this work, an effective methodology to incorporate aligned carbon nanotubes (CNTs) in long fiber composites in the presence of geometric discontinuities has been studied. Unidirectional (UD) glass/CNT-epoxy composites containing circular cut-outs were used as representative of a common discontinuity. Multi-walled (MW) CNTs were introduced in the composites via the epoxy matrix and aligned using low-frequency non-uniform AC electric field. This work discusses the methodology to control CNT alignment around the cut-out with the objective of enhancing the stiffness locally. The effectiveness of CNT alignment was assessed indirectly through the mapping of electrical resistance and polarized Raman spectroscopy. A strong correlation was found between the targeted CNT alignment state and the measured resistance values around the cut-out. As a precursor to developing glass/CNT-epoxy hierarchical composites, the response of MW-CNTs in the epoxy resin system was assessed at various input voltage levels in correlation with the weight fraction (wt.%) of CNTs. While a change in electrical resistance by ~3 orders of magnitude was found along the direction of CNT alignment in the hierarchical composites, a change in electrical resistance by ~5 orders of magnitude was observed in the CNT-epoxy composites in comparison with that of the respective control samples.
Bituminous waterproofing mortar applied on masonry walls of 19th and 20th century buildings in Porto: an analytical study in the context of urban building rehabilitation
Creators: name: Lier-Klüge, Andreia
name: Vieira, Eduarda
name: Guedes, João Miranda
name: Ferreira, Cláudia
name: Frade, José Carlos
name: Bordalo, Rui
Publisher: name: Estudos de Conservação e Restauro
Year: 2021

description: Bituminous mortars characterize the traditional buildings of the city of Porto and northern Portugal, especially those built between the end of the 19th century and the first decades of the 20th century. This article aims to determine the composition of this bituminous mortar through an analytical study by micro-FTIR and Py-GS/MS, and to assert experimentally its effectiveness as a waterproofing material though a series of tests including capillary tests, saturation content and water permeability. The present study is still a starting point for a more in-depth study on this subject, but the present investigation constitutes a further step in the characterisation of the constitution and function of bituminous mortar.
description: Estudos de Conservação e Restauro, n. 12 (2020)
Tensor Product State Formulation for the Spin 1/2 Antiferromagnetic XXZ Model on the Checkerboard Lattice
Creators: name: Maeshima, Nobuya
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Vertical density matrix algorithm (VDMA), a tensor product state formulation of the ``higher-dimensional'' density matrix renormalization group, is applied to the spin 1/2 antiferromagnetic XXZ model on the checkerboard lattice. The VDMA was, in the preceding study, applied to the transverse field Ising model on the square lattice and the three-dimensional classical Ising model. In the present paper, its implementation procedure is modified in order to apply the VDMA to the XXZ model. Numerical accuracy of the VDMA is investigated for the XXZ model on the square lattice, which shows that the method gives reliable results for the ground state energy. In the frustrated region, VDMA results are compared with a simple calculation based on a magnetically disordered state. It is found that the weakly frustrated region is in the Néel ordered phase, while in the strongly frustrated region the realized phase cannot be identified clearly by the obtained results.
description: 9 pages, 11 figures
Baseline inventory of the UBC food system : GHG emissions of food products and action plan (meats)
Creators: name: Chan, Jocelyn
name: Chee, Rachel
name: Chiu, Kit Lan (Garrie)
name: Leung, Jessica
name: Yang, James
Publisher: name: The University of British Columbia
Year: 2014

description: We, LFS 450 Group 4, took up the task of examining the GHG emission rates generated by UBC Food Services from their sales of various meat products on campus. A total of nine meat products were isolated from the UBC Food Services’ Velocity Report and selected according to type and yield to date in weight. Standardized GHG emission values for processing, production, packaging and transportation were extrapolated through extensive literature research. We determined that the total GHG emission from the nine items were 117993.63 kg of CO2e with Chicken FLT BRD Crunchy Ruffled FZN ZTF as the most significant contributor. The greatest limitations we faced where the multiple assumptions which had to be made and lack of GHG emissions information available from suppliers. Although our primary source of data, the Velocity Report, was extremely accurate, the values isolated from various scholarly articles did not account for all possible emission factors. This means that our numeric values are underestimated and overly generalized. From our research and calculations, to lower the overall GHG emissions from UBC Food Services, we would recommend reducing travel miles for the products where possible by selecting local food processors. Purchasing less beef products and replacing them with other lower emission intensive items such as chicken as well as selecting less processed food items would improve UBC’s carbon footprint. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Lattice QCD at non-zero chemical potential and the resonance gas model
Creators: name: Karsch, Frithjof
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results from lattice calculations on the thermodynamics of QCD at non-zero temperature and baryon chemical potential and discuss the role of resonances for the occurrence of the transition to the quark-gluon plasma in hot and dense matter. Properties of a hadronic resonance gas are compared to lattice results on the equation of state at zero as well as non-zero baryon chemical potential. Furthermore, it is shown that the quark mass dependence of the transition temperature can be understood in terms of lines of constant energy density in a resonance gas.
description: This paper is based on talks given in July 2003 at the Workshop on Finite Density QCD at Nara, Nara, Japan, and the International Symposium on Color Confinement and Hadrons in Quantum Chromodynamics - Confinement 2003, Wako, Japan
Supplementary Material from Geometric constraint of mechanosensing by modification of hydrogel thickness prevents stiffness-induced differentiation in bone marrow stromal cells
Creators: name: Hernandez-Miranda, Maria L
name: Xu, Dichu
name: Ben Issa, Aya A
name: Johnston, David A
name: Browne, Martin
name: Cook, Richard B
name: Sengers, Bram  G
name: Evans, Nicholas
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 320203
subject: Clinical microbiology

description: Supplementary Data 1.pdf
Ab initio description of the Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ electronic structure
Creators: name: Nokelainen, J.
name: Lane, C.
name: Markiewicz, R. S.
name: Barbiellini, B.
name: Pulkkinen, A.
name: Singh, B.
name: Sun, J.
name: Pussi, K.
name: Bansil, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Bi-based cuprate superconductors are important materials for both fundamental research and applications. As in other cuprates, the superconducting phase in the Bi compounds lies close to an antiferromagnetic phase. Our density functional theory calculations based on the strongly-constrained-and-appropriately-normed (SCAN) exchange correlation functional in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ reveal the persistence of magnetic moments on the copper ions for oxygen concentrations ranging from the pristine phase to the optimally hole-doped compound. We also find the existence of ferrimagnetic solutions in the heavily doped compounds, which are expected to suppress superconductivity.
description: 9 pages, 4 figures
THE LIVE CATTLE FUTURES MARKET AND DAILY CASH PRICE MOVEMENTS
Creators: name: Brorsen, B. Wade
name: Brorsen, B. Wade
Publisher: name: Unknown
Year: 1988
Subjects: International Relations/Trade
Livestock Production/Industries
Research Methods/ Statistical Methods

description: Comparative static results suggest that if futures markets improve cash market efficiency as expected then the variance of cash prices should increase. Empirical results with live cattle confirm the theoretical model. Cash prices for live cattle at Omaha showed increased daily variability after live cattle futures trading began on the Chicago Mercantile Exchange. The speed with which changes· occurred were also greater after the advent of futures trading. The results imply greater cash market efficiency with futures but more large short-run price changes.
Pervasive properties of the genomic signature
Creators: name: Jernigan, Robert W.
name: Baran, Robert H.
Publisher: name: American University
Year: 2023

description: Background: The dinucleotide relative abundance profile can be regarded as a genomic signature because, despite diversity between species, it varies little between 50 kilobase or longer windows on a given genome. Both the causes and the functional significance of this phenomenon could be illuminated by determining if it persists on smaller scales. The profile is computed from the base step odds ratios that compare dinucleotide frequencies to those expected under the assumption of stochastic equilibrium (thorough shuffling). Analysis is carried out on 22 sequences, representing 19 species and comprised of about 53 million bases all together, to assess stability of the signature in windows ranging in size from 50 kilobases down to 125 bases. Results: Dinucleotide relative abundance distance from the global signature is computed locally for all non-overlapping windows on each sequence. These distances are log-normally distributed with nearly constant variance and with means that tend to zero slower than reciprocal square root of window size. The mean distance within genomes is larger for protist, plant, and human chromosomes, and smaller for archaea, bacteria, and yeast, for any window size. Conclusions: The imprint of the global signature is locally pervasive on all scales considered in the sequences (either genomes or chromosomes) that were scanned.
Additional file 1 of Private health care market shaping and changes in inequities in childhood diarrhoea treatment coverage: evidence from the analysis of baseline and endline surveys of an ORS and zinc scale-up program in Nigeria
Creators: name: Braimoh, Tiwadayo
name: Danat, Isaac
name: Abubakar, Mohammed
name: Obinna Ajeroh
name: Stanley, Melinda
name: Owens Wiwa
name: Prescott, Marta Rose
name: Lam, Felix
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1.
Wilson fermions quark bilinears to three loops
Creators: name: Di Renzo, F.
name: Mantovi, A.
name: Miccio, V.
name: Torrero, C.
name: Scorzato, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Quark currents renormalization constants can in principle be safely computed in lattice perturbation theory. In practice, traditional lattice perturbative computations are quite cumbersome, so that so far only the first loop results were available. By making use of Numerical Stochastic Perturbation Theory we reached three (and with less statistical precision even four) loops, both in quenched and in unquenched theory. Convergence properties of the series can be assessed and omparison with non perturbative results (where available) can be made: high loops computations of renormalization constants can be a valuable tool for lattice QCD.
description: 6 pages, 3 figures, talk presented at Lattice 2005 (Improv. and Renormal.)
Pervasive properties of the genomic signature
Creators: name: Jernigan, Robert W.
name: Baran, Robert H.
Publisher: name: BMC Genomics
Year: 2023
Subjects: classificationCode: 32
subject: Biomedical and clinical sciences

description: Background: The dinucleotide relative abundance profile can be regarded as a genomic signature because, despite diversity between species, it varies little between 50 kilobase or longer windows on a given genome. Both the causes and the functional significance of this phenomenon could be illuminated by determining if it persists on smaller scales. The profile is computed from the base step odds ratios that compare dinucleotide frequencies to those expected under the assumption of stochastic equilibrium (thorough shuffling). Analysis is carried out on 22 sequences, representing 19 species and comprised of about 53 million bases all together, to assess stability of the signature in windows ranging in size from 50 kilobases down to 125 bases. Results: Dinucleotide relative abundance distance from the global signature is computed locally for all non-overlapping windows on each sequence. These distances are log-normally distributed with nearly constant variance and with means that tend to zero slower than reciprocal square root of window size. The mean distance within genomes is larger for protist, plant, and human chromosomes, and smaller for archaea, bacteria, and yeast, for any window size. Conclusions: The imprint of the global signature is locally pervasive on all scales considered in the sequences (either genomes or chromosomes) that were scanned.
New Strategies to Obtain Insights into CP Violation Through $B_s\to D_s^{\pm}K^\mp, D_s^{\ast\pm}K^\mp, ...$ and $B_d\to D^{\pm}π^\mp, D^{\ast\pm}π^\mp, ...$ Decays
Creators: name: Fleischer, Robert
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Decays of the kind $B_s\to D_s^{\pm}K^\mp, D_s^{\ast\pm}K^\mp, ...$ and $B_d\to D^{\pm}π^\mp, D^{\ast\pm}π^\mp, ...$ allow us to probe $ϕ_s+γ$ and $ϕ_d+γ$, respectively, involving the angle $γ$ of the unitarity triangle and the $B^0_q$--$\bar B^0_q$ mixing phases $ϕ_q$ ($q\in\{d,s\}$). Analysing these modes in a phase-convention-independent way, we find that their mixing-induced observables are affected by a subtle $(-1)^L$ factor, where $L$ denotes the angular momentum of the $B_q$ decay products, and derive bounds on $ϕ_q+γ$. Moreover, we emphasize that ``untagged'' rates are an important ingredient for efficient determinations of weak phases, not only in the presence of a sizeable width difference $ΔΓ_q$; should $ΔΓ_s$ be sizeable, the combination of untagged with tagged $B_s\to D_s^{\pm}K^\mp,D_s^{\ast\pm}K^\mp, ...$ observables provides an elegant and unambiguous extraction of $\tan(ϕ_s+γ)$, whereas the conventional determination of $ϕ_s+γ$ is affected by an eightfold discrete ambiguity. Finally, we propose a combined analysis of $B_s\to D_s^{\pm}K^\mp, D_s^{\ast\pm}K^\mp, ...$ and $B_d\to D^{\pm}π^\mp, D^{\ast\pm}π^\mp, ...$ modes, which has important advantages, offering various interesting new strategies to extract $γ$ in an essentially unambiguous manner.
description: 27 pages, 3 figures, sign error in factorization section corrected and comment on new BaBar result added
Introduction : Non-state diplomacy from non-Western perspectives
Creators: name: Grincheva, Natalia
name: Kelley, Robert
Publisher: name: The Hague Journal of Diplomacy
Year: 2023
Subjects: classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Published in: The Hague Journal of Diplomacy 14 (2019) 199-208.
HIV testing services in healthcare facilities in South Africa : A missed opportunity
Creators: name: Mabuto, Tonderai
name: Hansoti, Bhakti
name: Kerrigan, Deanna
name: Mshweshwe-Pakela, Nolundi T.
name: Kubeka, Griffiths
name: Charalambous, Salome
name: Hoffmann, Christopher
Publisher: name: American University
Year: 2023

description: Introduction: South Africa (SA) has the world’s highest burden of HIV infection (approximately 7.2 million), yet it is estimated that 23.5% women and 31.5% of men are unaware that they are living with HIV. The 2015 national South African HIV testing guidelines mandate the universal offer of HIV testing services (HTS) in all healthcare facilities. Methods: A multi-prong approach was used from January 2017 to June 2017 to evaluate the current implementation of HTS in ten facilities in the Ekurhuleni District of SA. First, we conducted patient exit interviews to quantify engagement in HTS ser- vices. Second, we systematically mapped the flow of individual patients through the clinic. Results: We conducted a total of 2989 exit interviews and followed 568 patients for value stream mapping. Overall self- reported testing acceptance was high at 84.7% (244), but <10% of the patients (288) were offered testing. Female patients were more likely to be offered testing (233/2046, 11.4% vs. 55/943, 5.8% in males; chi-square p < 0.005), and also more likely to accept testing (203/233, 87.1% vs. 41/55, 74.6% in males; chi-square p = 0.02). Value stream mapping revealed that patients offered HIV testing had a total visit time of 51 minutes more (95% CI: 30-72) compared to those not offered testing. Conclusions: The poor delivery of HTS appears to be due to a failure to recommend HTS and the added time burden placed on those accepting testing. There were significant differences in both the offer and acceptance of testing by gender. Health system issues need to be addressed to improve HTS delivery.
A Wide Field Hubble Space Telescope Study of the Cluster Cl0024+1654 at z=0.4 II: The Cluster Mass Distribution
Creators: name: Kneib, Jean-Paul
name: Hudelot, Patrick
name: Ellis, Richard S.
name: Treu, Tommaso
name: Smith, Graham P.
name: Marshall, Phil
name: Czoske, Oliver
name: Smail, Ian
name: Natarajan, Priya
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) We present a comprehensive lensing analysis of the rich cluster Cl0024+1654 based on panoramic sparse-sampled imaging conducted with HST. We demonstrate an ability to detect reliably weak lensing signals to a cluster radius of ~5 Mpc where the mean shear is around 1%. The projected mass distribution reveals a secondary concentration representing 30% of the overall cluster mass, which is also visible in the distribution of cluster member galaxies. We normalize the mass profile determined from the shear by assuming that background galaxies selected with I=23-26 have a redshift distribution statistically similar to that in the HDFs. Combining strong and weak constraints, we are able to probe the mass profile of the cluster on scales of 0.1 to 5 Mpc thus providing a valuable test of the universal form proposed by NFW on large scales. A generalized power law fit indicates a asymptotic density distribution with 3D slope larger than 2.4. An isothermal mass profile is therefore strongly rejected, whereas a NFW profile with M_200= 6.1+/-1 10^14 M_sun provides a good fit to the lensing data. We isolate cluster members according to their optical-near infrared colors; the red cluster light closely traces the dark matter with a mean mass-to-light ratio of M/L_K~ 40 M/L_sun. Similar profiles for mass and light on 1-5 Mpc scales are expected if cluster assembly is largely governed by infalling groups.
description: To appear in ApJ v597 n2 (November 10, 2003 issue), higher resolution version at http://www.astro.caltech.edu/~tt/0024/
HIV testing services in healthcare facilities in South Africa : A missed opportunity
Creators: name: Mabuto, Tonderai
name: Hansoti, Bhakti
name: Kerrigan, Deanna
name: Mshweshwe-Pakela, Nolundi T.
name: Kubeka, Griffiths
name: Charalambous, Salome
name: Hoffmann, Christopher
Publisher: name: Journal of the International AIDS Society
Year: 2023
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences
classificationCode: 4203
subject: Health services and systems

description: Introduction: South Africa (SA) has the world’s highest burden of HIV infection (approximately 7.2 million), yet it is estimated that 23.5% women and 31.5% of men are unaware that they are living with HIV. The 2015 national South African HIV testing guidelines mandate the universal offer of HIV testing services (HTS) in all healthcare facilities. Methods: A multi-prong approach was used from January 2017 to June 2017 to evaluate the current implementation of HTS in ten facilities in the Ekurhuleni District of SA. First, we conducted patient exit interviews to quantify engagement in HTS ser- vices. Second, we systematically mapped the flow of individual patients through the clinic. Results: We conducted a total of 2989 exit interviews and followed 568 patients for value stream mapping. Overall self- reported testing acceptance was high at 84.7% (244), but <10% of the patients (288) were offered testing. Female patients were more likely to be offered testing (233/2046, 11.4% vs. 55/943, 5.8% in males; chi-square p < 0.005), and also more likely to accept testing (203/233, 87.1% vs. 41/55, 74.6% in males; chi-square p = 0.02). Value stream mapping revealed that patients offered HIV testing had a total visit time of 51 minutes more (95% CI: 30-72) compared to those not offered testing. Conclusions: The poor delivery of HTS appears to be due to a failure to recommend HTS and the added time burden placed on those accepting testing. There were significant differences in both the offer and acceptance of testing by gender. Health system issues need to be addressed to improve HTS delivery.
The integrated requalification of author’s urban italian peripheries. Strategies and technological environmental solutions for a balance between sustainability and safeguarding existing value
Creators: name: Nigro, Silvia
Publisher: name: Estudos de Conservação e Restauro
Year: 2021

description: The actions to be taken on the residential buildings of the Italian urban peripheries need new tools, starting from the identification of contemporary architecture with characteristics of quality, within the field of recent building production (MiBACT, 2014). Although they are included in the Cultural Heritage concept from an historical-critical point of view - and their subscription within the National Census of Italian Architecture is an evidence of it - still there is not an institutional safeguarding tool and a technological and environmental common strategy that adapts them to the needs of contemporary society, compatibly with the “design intentions” and their quality.
description: Estudos de Conservação e Restauro, n. 12 (2020)
A major outburst from the X-ray binary RX J0520.5-6932
Creators: name: Edge, W. R. T.
name: Coe, M. J.
name: Galache, J. L.
name: Hill, A. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the analysis of 8 years of MAssive Compact Halo Objects (MACHO) data for the source RX J0520.5-6932. A regular period of 24.4 days has been confirmed, however this is manifest almost entirely in the red part of the spectrum. A major outburst, lasting approximately 200 days, was observed which increased the apparent brightness of the object by approximately 0.15 magnitudes without significantly altering its V-R colour index. This outburst was also seen in X-ray data. The evidence from this analysis points to the identification of this object as a Be/X-ray binary with a periodically variable circumstellar disk and a very early optical counterpart.
description: Paper has been accepted by MNRAS
The Sources of Oligopsony Power in the Haitian Coffee Market
Creators: name: Dorsainvil, Daniel
name: Lopez, Rigoberto A.
name: Dorsainvil, Daniel
name: Lopez, Rigoberto A.
Publisher: name: Unknown
Year: 1988
Subjects: Crop Production/Industries
Industrial Organization

description: This paper extends Appelbaum's model to test for potential sources of oligopsony power and determinants of the number of exporters in the Haitian coffee market. The analysis and results provide insights into consequences of government policy alternatives.
BetheSF: Efficient computation of the exact tagged-particle propagator in single-file systems via the Bethe eigenspectrum
Creators: name: Lapolla, Alessio
name: Godec, Aljaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Single-file diffusion is a paradigm for strongly correlated classical stochastic many-body dynamics and has widespread applications in soft condensed matter and biophysics. However, exact results for {single-file} systems are sparse and limited to the simplest scenarios. We present an algorithm for computing the non-Markovian time-dependent conditional probability density function of a {tagged-particle} in a {single-file} of $N$ particles diffusing in a confining external potential. The algorithm implements an eigenexpansion of the full interacting many-body problem obtained by means of the coordinate Bethe ansatz. While formally exact, the Bethe eigenspectrum involves the generation and evaluation of permutations, {which becomes unfeasible for single-files with an increasing number of particles $N$.} Here we exploit the underlying {exchange} symmetries between the particles to the left and to the right of the {tagged-particle} and show that it is possible to reduce the complexity of the algorithm from the worst case scenario $\mathcal{O}(N!)$ down to $\mathcal{O}(N)$. A C++ code to calculate the non-Markovian probability density function using this algorithm is provided. Solutions for simple model potentials are readily implemented incl. {single-file diffusion} in a flat and a 'tilted' box, as well as in a parabolic potential. Notably, the program allows for implementations of solutions in arbitrary external potentials under the condition that the user can supply solutions to the respective single-particle eigenspectra.
description: The code is available upon request
Engineering of siRNA loaded PLGA Nano-Particles for highly efficient silencing of GPR87 gene as a target for pancreatic cancer treatment
Creators: name: Seyma Ceylan
name: Bahadori, Fatemeh
name: Akbas, Fahri
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: G protein-coupled receptor (GPCR) 87, is overexpressed in various cancer cells especially pancreatic cancer and plays a critical role in tumor cell survival. Nano-particles (NP) have become the essential vehicles for nucleotide internalization to the cell, due to the negative charge of nucleotides and their poor stability in blood circulation. In this study, the HEK293T cell linewas transfected with GPR87-plasmid after which the double-stranded RNA molecules targeting the GPR87 gene were prepared and purified. 1.1B4 cancer cell lines were used as model pancreatic cancer cells. Produced siRNA molecules were encapsulated in Poly(Lactic-Co-Glycolic Acid) (PLGA) nano-micelles using three different methods, two of which were according to literature with (siR-PLGA-S) or without (siR-PLGA-V) sonication. However, a new method was suggested to overcome problems such as poly-dispersity and large sizes of siR-PLGA-S and siR-PLGA-V. The new method consists of encapsulating siRNA using mild agitation to the pre-made PLGA NPs. The latter method provided mono-dispersed particles (siR-P-PLGA) with 92 nm size and desired Encapsulation Efficiency (EE%). siR-P-PLGA was able to silence the GPR-87 gene in a ratio of 83.9%, almost 41 times more effective than siR-PLGA-S and siR-PLGA-V in HEK 293 T cells. siR-P-PLGA was able to show a mild cytotoxic effect on 1.1B4 pancreatic cancer cells within 48 h.
Changes in the microbial communities associated with Gorgonia ventalina during aspergillosis infection
Creators: name: Gil-Agudelo, Diego L.
name: Myers, Carey
name: Smith, Garriet W.
name: Kim, Kiho
Publisher: name: American University
Year: 2023

description: The surface mucopolysaccharide layer (SML) secreted by corals is a rich environment where bacteria live and proliferate, with population levels often being several orders of magnitude higher than in the surrounding waters (at least for culturable microbes). Some studies have suggested that these communities play an important role in energy and nutrient flux in marine environments. We hypothesize that the microbial community structure of the SML also plays a role in protection against disease. This hypothesis is based on studies that have shown differences in the bacterial composition of the mucus of healthy and diseased corals. In this study we tested the differences in the microbial communities living in association with the SML of healthy and diseased Gorgonia ventalina by comparing their metabolic profiles using Biolog EcoPlates. Overall, metabolic profiles of the coral surface microbiota were significantly different to those in the water column based on stepwise canonical discriminant analyses (CDAs). Furthermore, differences between communities living in healthy and diseased corals were also found. Changes were observed between affected and unaffected areas of the same colony, although these changes were not as obvious as between individual healthy and diseased colonies. Results suggest that the microbial communities living in the SML of G. ventalina are affected by the presence of aspergillosis, even if the area is not in direct contact with the infection. This suggests the possibility of changes in the composition of the SML throughout the colony as a response to aspergillosis infection.
Campus greenscaping : management plan for the first rooftop garden at UBC Vancouver
Creators: name: Knoll, Kelsey
name: Mussel, Kerry
name: Radley, Michelle
name: Severide, Megan
name: Van Horne, Kalyn
Publisher: name: The University of British Columbia
Year: 2014

description: The new Student Union Building on the University of British Columbia’s Vancouver campus, which is scheduled for completion in 2014, will feature a rooftop garden with 166m2 dedicated to food crop production. This UBC Food System Project will focus on creating a management plan that will implement a community garden scheme of managing the garden. This rooftop garden has the ability to positively impact the environmental, economic, and social sustainability of the UBC Food System. Methods were conducted through determining if there was demand for community garden space on UBC campus, outlining the goals of the garden by meeting with stakeholders, reviewing past UBCFSP papers, researching the management structure of other community gardens, and creating a management plan by determining the essential components of the rooftop garden by performing a cost-benefit analysis. It was determined that there would be adequate interest in the rooftop garden and the goals of the garden should be to be: student focussed, foster peer-to-peer learning, offer community building opportunities, promote food system and sustainability issues, enhance the sustainability of the UBC Food System, and be cost neutral. It was determined that the garden would need a coordinator in the form of a work study student, directed studies student, or a paid position and the pros and cons of each of these options was discussed. Having an AMS gardening club to provide structure to the operations of the garden was also discussed. The rules that would need to be implemented into the plot-holders contract agreement were also determined, discussed, and put into a draft contract. Stakeholder recommendations were divided into four sections: pre-garden completion, preparation for garden opening, annual garden management, and recommendations for general club functions. The project was then evaluated based on a comparison between the objectives and the results. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Scaling and Renormalization Group in Replica Symmetry Breaking space: Evidence for a simple analytical solution of the SK model at zero temperature
Creators: name: Oppermann, R.
name: Sherrington, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Using numerical self-consistent solutions of a sequence of finite replica symmetry breakings (RSB) and Wilson's renormalization group but with the number of RSB-steps playing a role of decimation scales, we report evidence for a non-trivial T->0-limit of the Parisi order function q(x) for the SK spin glass. Supported by scaling in RSB-space, the fixed point order function is conjectured to be q*(a)=sqrt{π/2} a/ξerf(ξ/a) on 0\leq a\leq infty where x/T->a at T=0 and ξ\approx 1.13\pm 0.01. ξplays the role of a correlation length in a-space. q*(a) may be viewed as the solution of an effective 1D field theory.
description: 4 pages, 6 Figures, accepted for publication in Physical Review Letters
Electrical detection of unconventional transverse spin-currents in obliquely magnetized thin films
Creators: name: Gunnink, Pieter M.
name: Duine, Rembert A.
name: Rückriegel, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In a typical experiment in magnonics, thin films are magnetized in-plane and spin waves only carry angular momentum along their spatial propagation direction. Motivated by the experiments of Bozhko et al. [Phys. Rev. Research 2, 023324 (2020)], we show theoretically that for obliquely magnetized thin films, exchange-dipolar spin waves are accompanied by a transverse spin-current. We propose an experiment to electrically detect this transverse spin-current with Pt strips on top of a YIG film, by comparing the induced spin-current for spin waves with opposite momenta. We predict the relative difference to be of the order $10^{-4}$, for magnetic fields tilted at least $30^{\circ}$ out of plane. This transverse spin-current is the result of the long range dipole-dipole interaction and the inversion symmetry breaking of the interface.
description: 5 pages, 5 figures, including supplemental material
Master integrals with one massive propagator for the two-loop electroweak form factor
Creators: name: Aglietti, U.
name: Bonciani, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the master integrals containing one massive propagator entering the two-loop electroweak form factor, i.e. the process f fbar --> X, where f fbar is an on-shell massless fermion pair and X is a singlet particle under SU(2)L x U(1)Y, such as a virtual gluon or an hypothetical Z'. The method used is that of the differential equation in the evolution variable x = -s/m^2, where s is the c.m. energy squared and m is the mass of the W or Z bosons (assumed to be degenerate). The 1/εpoles and the finite parts are computed exactly in terms of one-dimensional harmonic polylogarithms of the variable x, H(w;x), with ε=2-D/2 and D the space-time dimension. We present large-momentum expansions of the master integrals, i.e. expansions for |s| >> m^2, which are relevant for the study of infrared properties of the Standard Model. We also derive small-momentum expansions of the master integrals, i.e. expansions in the region |s| << m^2, related to the threshold behaviour of the form factor (soft probe). Comparison with previous results in the literature is performed finding complete agreement.
description: 73 pages, 9 figures, uses feynmf.sty and axodraw.sty, references added
JMESSP13420622.pdf
Creators: name: Mbatha Elizabeth M
name: Musundi Sammy, W.
name: Kamweru, Paul
Publisher: name: figshare
Year: 2020
Subjects: subject: 10199 Pure Mathematics not elsewhere classified
subject: FOS: Mathematics
subject: 10506 Statistical Mechanics, Physical Combinatorics and Mathematical Aspects of Condensed Matter
subject: 10108 Operator Algebras and Functional Analysis

description: Derivation of Schrödinger equation and its application using Hilbert space operators enhances a better understanding of the concept of Schrödinger equation.
Changes in the microbial communities associated with Gorgonia ventalina during aspergillosis infection
Creators: name: Gil-Agudelo, Diego L.
name: Myers, Carey
name: Smith, Garriet W.
name: Kim, Kiho
Publisher: name: Diseases of Aquatic Organisms
Year: 2023
Subjects: classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences

description: The surface mucopolysaccharide layer (SML) secreted by corals is a rich environment where bacteria live and proliferate, with population levels often being several orders of magnitude higher than in the surrounding waters (at least for culturable microbes). Some studies have suggested that these communities play an important role in energy and nutrient flux in marine environments. We hypothesize that the microbial community structure of the SML also plays a role in protection against disease. This hypothesis is based on studies that have shown differences in the bacterial composition of the mucus of healthy and diseased corals. In this study we tested the differences in the microbial communities living in association with the SML of healthy and diseased Gorgonia ventalina by comparing their metabolic profiles using Biolog EcoPlates. Overall, metabolic profiles of the coral surface microbiota were significantly different to those in the water column based on stepwise canonical discriminant analyses (CDAs). Furthermore, differences between communities living in healthy and diseased corals were also found. Changes were observed between affected and unaffected areas of the same colony, although these changes were not as obvious as between individual healthy and diseased colonies. Results suggest that the microbial communities living in the SML of G. ventalina are affected by the presence of aspergillosis, even if the area is not in direct contact with the infection. This suggests the possibility of changes in the composition of the SML throughout the colony as a response to aspergillosis infection.
Size structure and geographic variation in chemical resistance of sea fan corals Gorgonia ventalina to a fungal pathogen
Creators: name: Dube, Danielle
name: Kim, Kiho
name: Alker, Alisa P.
name: Harvell, C. Drew
Publisher: name: American University
Year: 2023

description: Despite the intense impact of diseases on tropical marine communities, little is known about mechanisms of resistance to disease or the role of disease as a selective factor in these commu- nities. Spatial variation in chemical resistance of Gorgonia ventalina (sea fan coral) to the fungus Aspergillus sydowii was investigated by sampling G. ventalina populations in the Florida Keys, USA, and San Salvador, Bahamas. A. sydowii is the causative agent in aspergillosis, a fungal disease affecting G. ventalina throughout the Caribbean. Using field census and experimental inoculation, this study examines if sea fan chemical extracts provide resistance to disease caused by A. sydowii and the potential role of disease as a selective force in shaping the chemical defenses of sea fan populations. Chemical resistance against A. sydowii was assessed with a fungal growth assay. Higher anti-fungal activity of small versus large fans observed in field sampling and increased disease sever- ity in mature versus young fans in inoculation studies support the hypothesis that resistance decreases with increasing fan age. This result is also consistent with patterns predicted by the opti- mal defense theory and growth-differentiation balance hypotheses in plant studies. Anti-fungal activity of large sea fans increased upon inoculation, consistent with the hypothesis of inducible resis- tance. Anti-fungal activity of sea fan extracts from the Florida Keys and Bahamas did vary signifi- cantly with site and was negatively correlated with fan height and extract concentration (mg extract per g dry coral weight). Anti-fungal activity did not correlate significantly with disease status in a multiple regression model. The mean anti-fungal activity of sea fans varied significantly among Florida Keys but not among San Salvador sites, nor between Florida Keys and San Salvador sites. Dis- ease pressure was not correlated with anti-fungal activity across sites, as would be expected under a simple resistance-selection model. A simple mean resistance-selection model may not be appropriate in relatively open marine systems in which environmental induction may obscure natural selection. However, the coefficient of variation in anti-fungal activity among sites is negatively correlated with disease pressure, consistent with the hypothesis that A. sydowii imposes detectable directional selec- tion and eliminates susceptible individuals from sites with high disease pressure.
The matallicities of star-forming galaxies at intermediate redshifts 0.47 < z < 0.92
Creators: name: Lilly, Simon J.
name: Carollo, C. Marcella
name: Stockton, Alan N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Estimates of the [O/H] metallicity of the star-forming gas in a sample of 66 CFRS galaxies between 0.47 < z < 0.92 have been made based on the flux ratios of bright emission lines. Most galaxies (> 75%) have the [O/H] ~ 8.9 metallicities that are seen locally in galaxies of similar luminosities. However, a minority (< 25%) appear to have significantly lower metallicities [O/H] < 8.6 as indicated by high values of the Pagel R23 parameter. The high metallicities of the majority of the galaxies suggest that they do not fade to be low metallicity dwarf galaxies today. Only one of the 66 galaxies has an optical emission line spectrum similar to the few Lyman break galaxies recently observed at z ~ 3, emphasizing the differences with that population. The inferred emission line gas [O/H] metallicity broadly correlates with luminosity in both the rest B- and J-bands but with considerable scatter introduced. The metallicity does not appear to correlate well with galaxy size, H-beta strength or, with the very limited data available, the kinematics. The metallicity does correlate well with the continuum optical-infrared colors in a way that could be explained as a combination of effects, none of which should produce large variations in the M/L ratio. These results support a "down-sizing" picture of galaxy evolution rather than a "fading dwarf" picture in which the luminous active galaxies at high redshift are highly brightened dwarf galaxies. The overall change in metallicity of star-forming galaxies over the last half of the age of the Universe appears to have been modest, Delta[O/H] = 0.08 +/- 0.06. This is consistent with the age-metallicity relation in the Galactic disk and is broadly consistent with models for the chemical evolution of the Universe, especially those that consider different environments.
description: 26 pages, accepted for publication in Astrophysical Journal (July 10 2003)