cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Valence bond spin liquid state in two-dimensional frustrated spin-1/2 Heisenberg antiferromagnets
Creators: name: Zhang, Guang-Ming
name: Hu, Hui
name: Yu, Lu
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Fermionic valence bond approach in terms of SU(4) representation is proposed to describe the $J_{1}-J_{2}$ frustrated Heisenberg antiferromagnetic (AF) model on a {\it bipartite} square lattice. A uniform mean field solution without breaking the translational and rotational symmetries describes a valence bond spin liquid state, interpolating the two different AF ordered states in the large $J_{1}$ and large $J_{2}$ limits, respectively. This novel spin liquid state is gapless with the vanishing density of states at the Fermi nodal points. Moreover, a sharp resonance peak in the dynamic structure factor is predicted for momenta ${\bf q}=(0,0)$ and $(π,π)$ in the strongly frustrated limit $J_{2}/J_{1}\sim 1/2$, which can be checked by neutron scattering experiment.
description: Revtex file, 4 pages, 4 figures
Additional file 1 of Whole-exome sequencing identifies homozygous mutation in TTI2 in a child with primary microcephaly: a case report
Creators: name: Picher-Martel, Vincent
name: Labrie, Yvan
name: Rivest, Serge
name: Lace, Baiba
name: Chrestian, Nicolas
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology

description: Additional file 1. Materials and methods. Methods for exome sequencing analysis including DNA extraction and cell line immortalization, library preparation, whole exome sequencing, bioinformatic analyses of exome data, variant filtering and sanger sequencing.
Interaction of the surface bound antimicrobial peptides melimine and Mel4 with Staphylococcus aureus
Creators: name: Yasir, Muhammad
name: Debarun Dutta
name: Kumar, Naresh
name: Willcox, Mark D. P.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Melimine and Mel4 are cationic antimicrobial peptides which can resist biofilm development once bound to biomaterials. The aim of the current study was to determine the mode of action of bound melimine and Mel4 against S. aureus. The peptides were covalently attached to glass using an azidobenzoic acid linker. The amount of attached peptides was confirmed by XPS and amino acid analysis and their covalent attachment by SDS extraction. The release of autolysins after interaction of S. aureus with immobilized peptides was determined in cell free supernatants. The interaction of immobilized peptides with lipoteichoic acid was confirmed by ELISA. Membrane damage by surface bound peptides was assessed using DiSC(3)-5 (membrane potential sensitive), Syto-9 (membrane permeable) and PI (membrane impermeable) dyes with fluorescence microscopy. Release of ATP and nucleic acids (DNA/RNA) was measured in the surrounding fluid. Attachment of the peptides resulted in increased N% for melimine (5.4 ± 1.8%) and for Mel4 (4.8 ± 1.8%). The concentrations of immobilised amino acids were 0.297 nmole for melimine and 0.358 nmole for Mel4. SDS extraction released < 15% of peptides from the glass. The immobilized peptides bound ≥ 4 times more LTA than control surfaces. More autolysins (8 ± 2%; p = 0.026) were released from Mel4 than melimine or control surfaces. Membrane depolarization occurred at 15 min and was associated with a reduction in bacterial viability ≥ 37% for both peptides (p p p = 0.026) and Mel4 gave 17 ± 12% (p = 0.150) PI stained cells after 4 h. DNA/RNA was released only by melimine coatings (2.1 ± 0.1 times; p = 0.011) compared to process control at 6 h. Both bound peptides resulted in the release of ATP, but only melimine released DNA/RNA while Mel4-coating resulted in the release of autolysins. Since the mode of action of melimine and Mel4 relate to the cell surface, they have potential for the development of infection-resistant implants.
Planting Rights Liberalization in the European Union: An Analysis of the Possible Effects on the Wine Sector in Rheinland-Pfalz, Germany
Die Liberalisierung der Pflanzrechte in der Europäischen Union: Analyse der möglichen Konsequenzen für den Weinsektor in Rheinland-Pfalz, Deutschland
Creators: name: Bogonos, Mariia
name: Engler, Barbara
name: Oberhofer, Jürgen
name: Dreßler, Marc
name: Dabbert, Stephan
name: Bogonos, Mariia
name: Engler, Barbara
name: Oberhofer, Jürgen
name: Dreßler, Marc
name: Dabbert, Stephan
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: planting rights
subject: wine must
subject: farm distribution
subject: partial equilibrium model
subject: Markov chain

description: This study investigates the effects of planting rights liberalization on the largest wine-producing region in Germany, Rheinland-Pfalz. Introduced by the reform of the Common Agricultural Policy (CAP) of the European Union (EU) in 2008, the abolishment of restrictions on the planting of new vine-yards is still a subject of controversial discussions regarding possible effects on the sector's structure and the quantity of wine production. For a simulation of these effects, this study uses partial equilibrium modeling and Markov chain projection. The results reveal that the effects of abolishment of planting rights depend on the assumed wine must prices. Relatively high market prices for wine must would lead to increases in the production of both standard and basic quality wine must and in the number of more cost-effective wine farms in the region. If low prices for wine must are assumed, the reform might result only in minor impacts.
From newspaper to biofuel : tell me all about it
Creators: name: Wu, Adam (Jie)
Publisher: name: The University of British Columbia
Year: 2022

description: Adam (Jie) Wu, a UBC 3MT Semi-Finalist, presents their research on repurposing the existing mechanical pulp mill infrastructure to create sustainable bioproducts that could power our modes of transportation. Adam (Jie) Wu is completing their PhD in Forestry under the supervision of Dr. Jack Saddler.
Effects of ‘in-service’ conditions – mimicked hull roughness ranges and biofilms – on the surface and the hydrodynamic characteristics of foul-release type coatings
Creators: name: I. A. Yeginbayeva
name: M. Atlar
name: S. Turkmen
name: H. Chen
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: To develop a better understanding of ‘in-service’ performance of modern marine coatings, this study explored the combined effects of different roughness ranges of foul-release coating (FRC) and light biofouling (slime) on the surface, boundary layer and drag characteristics under a range of ‘in-service’ conditions. Natural and laboratory biofilms were grown dynamically on FRC panels by exposing panels in facilities dedicated to realistic fouling culture. The boundary layer experiments were conducted in a circulating water tunnel. Boundary layer similarity-law scaling was used to predict the combined effects of coating roughness and biofilms on the added frictional resistance (%ΔCF) and added required effective power (%ΔPE) for a benchmark KRISO container ship (KCS) and a bulk carrier. The increase in %ΔPE due to the presence of biofilms on commercial FRC is estimated to be between 7% and 16% depending on the biofilm type, biofilm thickness and percentage coverage. Significant increases in effective power are estimated for non-fouling control primers with heavy fouling. Moreover, the paper suggests updated roughness allowances (ΔCF) for two vessel types assuming FRCs on their hulls with more representative hull roughness ranges and fluffy biofilms.
Magnetic anisotropy in Cr$_2$GeC investigated by X-ray magnetic circular dichroism and \textit{ab initio} calculations
Creators: name: Magnuson, Martin
name: Mattesini, Maurizio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetism in the inherently nanolaminated ternary MAX-phase Cr$_{2}$GeC is investigated by element-selective, polarization and temperature-dependent, soft X-ray absorption spectroscopy and X-ray magnetic circular dichroism. The measurements indicate an antiferro-magnetic Cr-Cr coupling along the $c$-axis of the hexagonal structure modulated by a ferromagnetic ordering in the nanolaminated $ab$-basal planes. The weak chromium magnetic moments are an order of magnitude stronger in the nanolaminated planes than along the vertical axis. Theoretically, a small but notable, non-spin-collinear component explains the existence of a non-perfect spin compensation along the $c$-axis. As shown in this work, this spin distortion generates an overall residual spin moment inside the unit cell resembling that of a ferri-magnet. Due to the different competing magnetic interactions, electron correlations and temperature effects both need to be considered to achieve a correct theoretical description of the Cr$_{2}$GeC magnetic properties.
description: 10 pages, 6 figures, 2 tables
Ist der Anbau von Zuckerrüben als Biogassubtrat für Landwirte eine Alternative? Ein Discrete-Choice-Experiment zur Ausgestaltung von Substrat-Lieferverträgen für Zuckerrüben
Is the Cultivation of Sugar Beets as a Biogas Substrate an Alternative for Farmers? A Discrete Choice Experiment for the Design of Substrate-supply-contracts for Sugar Beets
Creators: name: Saramena Sauthoff
name: Anastassiadis, Friederike
name: Mußhoff, Oliver
name: Saramena Sauthoff
name: Anastassiadis, Friederike
name: Mußhoff, Oliver
Publisher: name: Unknown
Year: 2016
Subjects: subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: Risk and Uncertainty
subject: Zuckerrüben
subject: Biogassubstrat-Liefervertrag
subject: Discrete-Choice-Experiment

description: Für eine nachhaltige und gesellschaftlich unterstützte Erzeugung erneuerbarer Energien in Biogasanlagen ist es notwendig, Substrate abseits des Silomais‘ auf deren Tauglichkeit und Akzeptanz hin zu untersuchen. In diesem Zusammenhang gewinnt die Zuckerrübe als Biogassubstrat an Bedeutung. Unseres Wissens sind keine Studien vorhanden, die die Einstellung von Landwirten zur alternativen Verwendung von Zuckerrüben in Biogasanlagen untersuchen. Damit ist auch offen, wie Lieferverträge ausgestaltet sein müssen, damit Landwirte einem Zuckerrübenanbau für die Biogasproduktion zustimmen. Zur Beantwortung dieser Fragestellung haben wir eine Online-Befragung mit 118 deutschen Landwirten durchgeführt, die u.a. ein Discrete-Choice-Experiment beinhaltet hat. Unsere Ergebnisse zeigen, dass Landwirte Substratlieferverträgen für Zuckerrüben eher ablehnend gegenüberstehen. Entscheiden sich Landwirte für einen Liefervertrag über den Anbau von Zuckerrüben als Biogassubstrat, präferieren sie eine kurze Vertragslaufzeit und einen geringen Anbauumfang. Eine Frühjahrsrodung wird generell abgelehnt.
Phase changes in selected Lennard-Jones X_{13-n}Y_n clusters
Creators: name: Sabo, Dubravko
name: Predescu, Cristian
name: Doll, J. D.
name: Freeman, David L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Detailed studies of the thermodynamic properties of selected binary Lennard-Jones clusters of the type X_{13-n}Y_n (where n=1,2,3) are presented. The total energy, heat capacity and first derivative of the heat capacity as a function of temperature are calculated by using the classical and path integral Monte Carlo methods combined with the parallel tempering technique. A modification in the phase change phenomena from the presence of impurity atoms and quantum effects is investigated.
description: 14 pages, 13 figures. submitted to J. Chem. Phys
Enabling EASEY deployment of containerized applications for future HPC systems
Creators: name: Höb, Maximilian
name: Kranzlmüller, Dieter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: The upcoming exascale era will push the changes in computing architecture from classical CPU-based systems in hybrid GPU-heavy systems with much higher levels of complexity. While such clusters are expected to improve the performance of certain optimized HPC applications, it will also increase the difficulties for those users who have yet to adapt their codes or are starting from scratch with new programming paradigms. Since there are still no comprehensive automatic assistance mechanisms to enhance application performance on such systems, we are proposing a support framework for future HPC architectures, called EASEY (Enable exASclae for EverYone). The solution builds on a layered software architecture, which offers different mechanisms on each layer for different tasks of tuning. This enables users to adjust the parameters on each of the layers, thereby enhancing specific characteristics of their codes. We introduce the framework with a Charliecloud-based solution, showcasing the LULESH benchmark on the upper layers of our framework. Our approach can automatically deploy optimized container computations with negligible overhead and at the same time reduce the time a scientist needs to spent on manual job submission configurations.
description: International Conference on Computational Science ICCS2020, 13 pages
Nonabelian Phenomena on D-branes
Creators: name: Myers, Robert C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A remarkable feature of D-branes is the appearance of a nonabelian gauge theory in the description of several (nearly) coincident branes. This nonabelian structure plays an important role in realizing various geometric effects with D-branes. In particular, the branes' transverse displacements are described by matrix-valued scalar fields and so noncommutative geometry naturally appears in this framework. I review the action governing this nonabelian theory, as well as various related physical phenomena such as the dielectric effect, giant gravitons and fuzzy funnels.
description: Lecture at Leuven workshop on ``The quantum structure of spacetime and the geometrical nature of fundamental interactions'' (September 13-19, 2002); ref.'s added
Quantization on a torus without position operators
Creators: name: Tanimura, Shogo
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formulate quantum mechanics in the two-dimensional torus without using position operators. We define an algebra with only momentum operators and shift operators and construct irreducible representation of the algebra. We show that it realizes quantum mechanics of a charged particle in a uniform magnetic field. We prove that any irreducible representation of the algebra is unitary equivalent to each other. This work provides a firm foundation for the noncommutative torus theory.
description: 12 pages, LaTeX2e, the title is changed, minor corrections are made, references are added. To be published in Modern Physics Letters A
Beobachtbare Milchauszahlungspreise: Chance für Milcherzeuger – Risiko für Endverbraucher
Observable Raw Milk Prices: Chance for Dairy Farmers – Risk for Final Consumers
Creators: name: Hildenbrand, Andreas
name: Kühl, Rainer
name: Hildenbrand, Andreas
name: Kühl, Rainer
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Beobachtbarkeit
subject: Milchauszahlungspreis
subject: Genossenschaften

description: Ob beobachtbare Milchauszahlungspreise die wirtschaftliche Situation von Milcherzeugern eher verbessern oder verschlechtern, ist strittig. Anhand eines spieltheoretischen Modells zeigen wir, dass beobachtbare Milchauszahlungspreise wettbewerbsbeschränkend und gewinnerhöhend für Molkereien sein können, falls die Konzentrationstendenz im Bereich der Molkereien anhält. Während beobachtbare Milchauszahlungspreise für Milcherzeuger eine Chance auf eine höhere Produzentenrente bieten, bergen sie für Endverbraucher ein Risiko auf eine niedrigere Konsumentenrente. Wir argumentieren insbesondere mit der Organisationsform der Genossenschaft, weil sie im Bereich der Molkereien vorherrschend ist. Unsere Argumentation lässt sich auf andere Organisationsformen im Bereich der Molkereien übertragen, weil durch langfristige Verträge ähnliche Organisationsstrukturen geschaffen werden.
Investigating the Temperature Distribution of Diatomic Carbon in Comets using the Swan Bands
Creators: name: Nelson, Tyler
name: Cochran, Anita
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present high spectral-resolution observations of comets 122P/de Vico and 153P/Ikeya-Zhang obtained with the Tull Coudé spectrograph on the 2.7m Harlan J. Smith telescope of McDonald Observatory. We used these data to study the distribution of the lines of the $\mathrm{d} ^3Π_g - \mathrm{a} ^3Π_u$ C$_2$ (Swan) bands. We show that the data are best represented with two rotational temperatures, with the lowest energy lines being at a relatively cool temperature and the higher energy lines being at a higher temperature. We discuss the implications of this two temperature distribution and suggest future work.
description: 15 pages, 8 figures
Tiny Graviton Matrix Theory: DLCQ of IIB Plane-Wave String Theory, A Conjecture
Creators: name: Sheikh-Jabbari, M. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We conjecture that the discrete light-cone quantization (DLCQ) of strings on the maximally supersymmetric type IIB plane-wave background in the sector with J units of light-cone momentum is a supersymmetric 0+1 dimensional U(J) gauge theory (quantum mechanics) with PSU(2|2)x PSU(2|2)x U(1) superalgebra. The conjectured Hamiltonian for the plane-wave matrix (string) theory, the tiny graviton matrix theory, is the quantized (regularized) three brane action on the same background. We present some pieces of evidence for this conjecture through analysis of the Hamiltonian, its vacua, spectrum and coupling constant. Moreover, we discuss an extension of our conjecture to the DLCQ of type IIB strings on AdS_5 x S^5 geometry.
description: 33 pages, Latex; v2: Minor changes, typos corrected and references added; v3: typos corrected and a reference added. The version to appear in JHEP
The concavity of entropy and extremum principles in thermodynamics
Creators: name: Prestipino, S.
name: Giaquinta, P. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We revisit the concavity property of the thermodynamic entropy in order to formulate a general proof of the minimum energy principle as well as of other equivalent extremum principles that are valid for thermodynamic potentials and corresponding Massieu functions under different constraints. The current derivation aims at providing a coherent formal framework for such principles which may be also pedagogically useful as it fully exploits and highlights the equivalence between different schemes. We also elucidate the consequences of the extremum principles for the general shape of thermodynamic potentials in relation to first-order phase transitions.
description: 19 pages, 1 figure
On the Multi Trace Superpotential and Corresponding Matrix Model
Creators: name: Alishahiha, Mohsen
name: Yavartanoo, Hossein
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study N=1 supersymmetric U(N) gauge theory coupled to an adjoint scalar superfiled with a cubic superpotential containing a multi trace term. We show that the field theory results can be reproduced from a matrix model which its potential is given in terms of a linearized potential obtained from the gauge theory superpotential by adding some auxiliary nondynamical field. Once we get the effective action from this matrix model we could integrate out the auxiliary field getting the correct field theory results.
description: 21 pages, latex
The edge as a Lagrangian Coherent Structure in a high-dimensional state space
Creators: name: Beneitez, Miguel
name: Duguet, Yohann
name: Schlatter, Philipp
name: Henningson, Dan S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Dissipative dynamical systems characterised by two basins of attraction are found in many physical systems, notably in hydrodynamics where laminar and turbulent regimes can coexist. The state space of such systems is structured around a dividing manifold called the edge, which separates trajectories attracted by the laminar state from those reaching the turbulent state. We apply here concepts and tools from Lagrangian data analysis to investigate this edge manifold. This approach is carried out in the state space of automous arbitrarily high-dimensional dissipative systems, in which the edge manifold is re-interpreted as a Lagrangian Coherent Structure (LCS). Two different diagnostics, finite-time Lyapunov exponents and Lagrangian Descriptors, are used and compared with respect to their ability to identify the edge and to their scalability. Their properties are illustrated on several low-order models of subcritical transition of increasing dimension and complexity, as well on well-resolved simulations of the Navier-Stokes equations in the case of plane Couette flow. They allow for a mapping of the global structure of both the state space and the edge manifold based on quantitative information. Both diagnostics can also be used to generate efficient bisection algorithms to approach asymptotic edge states, which outperform classical edge tracking.
description: 16 pages, 10 figures, Accepted in Phys. Rev. Research
A granular fluid modeled as a driven system of elastic hard spheres
Creators: name: Astillero, Antonio
name: Santos, Andres
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We explore the possibility of describing the main transport properties of a granular gas by means of a model consisting of elastic hard spheres under the action of a drag force that mimics the inelastic cooling of the granular gas. Direct Monte Carlo simulations of the Boltzmann equation show a good agreement between the results for a gas of inelastic hard spheres and those for a gas of driven elastic hard spheres in the simple shear flow state. This approximate equivalence between both systems is exploited to extend known kinetic models for elastic collisions to the inelastic case.
description: 5 pages, 1 figure
Insecticidal and morpho-physiological disorders caused by Thymus vulgaris L. essential oil on the elm leaf beetle, Xanthogaleruca luteola Müller (Coleoptera: Chrysomelidae)
Creators: name: Adibmoradi, Gilda
name: Sendi, Jalal Jalali
name: Siavosh Tirgari
name: Imani, Sohrab
name: Avid Razavi-Nematolahi
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Developmental Biology

description: Elm leaf beetle, Xanthogaleruca luteola Müller (Col.: Chrysomelidae) a pest of ornamental elms. Thyme, Thymus vulgaris (Lamiaceae) is an important medicinal. In this study, effect of Thymus vulgaris L. essential oil was tested on X. luteola in laboratory. The LC 30 and LC 50 values were estimated by leaf dipping method to third instar larvae (LC30 =2.065 and LC50 =4.237% W/V). The feeding efficiency was significantly reduced in treated larvae except the approximate digestibility (94.82 in control and 98.23 in treatment). The treated larvae showed a significant reduction key biochemicals. Reduced glucose and uric acid but increased protein level was seen. Severe reduction in ovarian texture both morphologically and histologically was observed which depicts a prolonged effect of the used EO on survivors. We believe that the thyme EO has the potential to be formulated for smaller scale trial to meet the needs of an environmental friendly compound.
Generation of macroscopic entangled cat states in a molecular cavity-QED system
Creators: name: Huang, Jian
name: Liu, Yu-Hong
name: Huang, Jin-Feng
name: Liao, Jie-Qiao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Macroscopic entangled cat states not only are significant in the demonstration of the fundamentals of quantum physics, but also have wide applications in modern quantum technologies such as continuous-variable quantum information processing and quantum metrology. Here we propose a scheme for generation of macroscopic entangled cat states in a molecular cavity-QED system, which is composed of an organic molecule (including electronic and vibrational states) coupled to a single-mode cavity field. By simultaneously modulating the resonance frequencies of the molecular vibration and the cavity field, the molecular vibrational displacement can be enhanced significantly and hence macroscopic entangled cat states between the molecular vibrational mode and the cavity mode can be created. We also study quantum coherence effects in the generated states by calculating the joint Wigner function and the degree of entanglement. The dissipation effects are included by considering the state generation in the open-system case. Our results will pave the way to the study of quantum physics and quantum chemistry in molecular cavity-QED systems.
description: 14 pages, 11 figures
Electronic structure of periodic curved surfaces -- continuous surface versus graphitic sponge
Creators: name: Aoki, H.
name: Koshino, M.
name: Takeda, D.
name: Morise, H.
name: Kuroki, K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the band structure of electrons bound on periodic curved surfaces. We have formulated Schrödinger's equation with the Weierstrass representation when the surface is minimal, which is numerically solved. Bands and the Bloch wavefunctions are basically determined by the way in which the ``pipes'' are connected into a network, where the Bonnet(conformal)-transformed surfaces have related electronic strucutres. We then examine, as a realisation of periodic surfaces, the tight-binding model for atomic networks (``sponges''), where the low-energy spectrum coincides with those for continuous curved surfaces.
description: 4 pages
The ALMA-PILS survey: Inventory of complex organic molecules towards IRAS 16293-2422 A
Creators: name: Manigand, S.
name: Jørgensen, J. K.
name: Calcutt, H.
name: Müller, H. S. P.
name: Ligterink, N. F. W.
name: Coutens, A.
name: Drozdovskaya, M. N.
name: van Dishoeck, E. F.
name: Wampfler, S. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Complex organic molecules (COM) are detected in many sources in the warm inner regions of envelopes surrounding deeply embedded protostars. Exactly how these COM form remains an open question. This study aims to constrain the formation of complex organic molecules through comparisons of their abundances towards the Class 0 protostellar binary IRAS 16293-2422 (IRAS16293). We utilised observations from the ALMA Protostellar Interferometric Line Survey of IRAS16293. The species identification and the rotational temperature and column density estimation were derived by fitting the extracted spectra towards IRAS16293 A and IRAS16293 B with synthetic spectra. The majority of the work in this paper pertains to the analysis of IRAS16293 A for a comparison with the results from the other binary component, which have already been published. We detect 15 different COM, as well as 16 isotopologues towards the most luminous companion protostar IRAS16293 A. Tentative detections of an additional 11 isotopologues are reported. We also searched for and report on the first detections of CH3OCH2OH and t-C2H5OCH3 towards IRAS16293 B and the follow-up detection of CH2DCHO and CH3CDO. Twenty-four lines of CHD2OH are also identified. The comparison between the two protostars of the binary system shows significant differences in abundance for some of the species, which are partially correlated to their spatial distribution. The spatial distribution is consistent with the sublimation temperature of the species; those with higher expected sublimation temperatures are located in the most compact region of the hot corino towards IRAS16293 A. This spatial differentiation is not resolved in IRAS16293 B and will require observations at a higher angular resolution. In parallel, the list of identified CHD2OH lines shows the need of accurate spectroscopic data including their line strength.
description: Accepted for publication in A&A. 31 pages, 17 figures
Adiabatic Heuristic Principle on a Torus and Generalized Streda Formula
Creators: name: Kudo, Koji
name: Hatsugai, Yasuhiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Although the adiabatic heuristic argument of the fractional quantum Hall states has been successful, continuous modification of the flux/statistics of anyons is strictly prohibited due to algebraic constrains of the braid group on a torus. We have numerically shown that the adiabatic heuristic principle for anyons is still valid even though the Hamiltonians cannot be modified continuously. The Chern number of the ground state multiplet is the adiabatic invariant, while the number of the topological degeneracy behaves wildly. A generalized Streda formula is proposed that explains the degeneracy pattern. Nambu-Goldston modes associated with the anyon superconductivity are also suggested numerically.
description: 7 pages
Top flavour violating decays in general supersymmetric models
Creators: name: Delepine, D.
name: Khalil, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyse the top flavour violating decays in general supersymmetric model using the mass insertion approximation. In particular, we discuss the impact of a light right-handed top-squark and large mixing between the first or second and third generation of up-squarks on processes as t -> q gamma,g . We also take into account the relevant experimental constraints from B-physics and the requirements for a successfull electroweak baryogenesis on squark mixings. We show that for general large mixings in squarks mass matrix, the branching ratio of the t -> q gamma, g (q=u,c) can be as large as 10^{-6}.
description: 17 pages, 3 figures
Ocenebra erinaceus
Creators: name: Bouchard, Blanche
name: Wesselingh, Frank P.
name: Pouwer, Ronald
name: Landau, Bernard
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Ocenebra
Ocenebra erinaceus

description: Ocenebra cf. erinaceus (Linnaeus, 1758) (Fig. 12E 1-E 3)
cf. Murex erinaceus Linnaeus, 1758: 753.
cf. Ocinebra erinacea – Harmer 1914: 124, pl. 12, figs 12-14.
cf. Ocenebra erinaceus – Landau et al. 2003 26, pl. 7, figs 1-4. — Raad et al. 2021: 12, figs 1-2.
For more, see synonymy list in Landau et al. (2003).
MATERIAL AND DIMENSIONS. — Maximum height 9.0 mm, width 4.3 mm. — RGM.1364928 (1), leg. WG.
SPECIES CHARACTERISATION. — Small biconic shell. Two smooth protoconch whorls with large bulbous first whorl. Three convex teleoconch whorls separated by an impressed suture. Sculpture on spire whorls of two spiral cords and around ten ribs. Last whorl with six primary cords, shoulder cord appears on second half of last whorl and secondaries intercalated in interspaces; long, narrow siphonal canal.
DISTRIBUTION. — Lower Pleistocene: Atlantic, Selsoif, NW France (this paper). The oldest stratigraphic record of Ocenebra erinaceus is from Atlantic Pliocene deposits of the Guadalquivir Basin, Spain (Landau et al. 2007, 2011) and western (Martinell & Marquina 1981) and central Mediterranean (Chirli 2000). — In the Upper Pliocene it is present in the Mondego Basin of Portugal (Silva 2001) and is widespread in the Mediterranean. Today it occurs from the southern British Isles to the Azores, Madeira, and Canary Islands and entire Mediterranean (Houart 2001).
REMARK
We attribute the specimen with some hesitation to Ocenebra erinaceus (Linnaeus, 1758); it is represented by a single juvenile specimen that differs from the many juveniles of Nucella lapillus (Linnaeus, 1758) in having a larger, more elevated protoconch with a more bulbous first whorl, the teleoconch is more slender and the axial sculpture stronger than in N. lapillus. This single juvenile could represent Ocenebra erinaceus (Linnaeus, 1758), but further specimens would be required to confirm its identity.
description: Published as part of Bouchard, Blanche, Wesselingh, Frank P., Pouwer, Ronald & Landau, Bernard, 2025, The Gelasian gastropod fauna of Selsoif (Manche, France), pp. 39-91 in Geodiversitas 47 (3) on page 74, DOI: 10.5252/geodiversitas2025v47a3, http://zenodo.org/record/14823602
Superfield T-duality rules
Creators: name: Bandos, Igor A.
name: Julia, Bernard
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A geometric treatment of T-duality as an operation which acts on differential forms in superspace allows us to derive the complete set of T-duality transformation rules which relate the superfield potentials of D=10 type IIA supergravity with those of type IIB supergravity including Ramond-Ramond superfield potentials and fermionic supervielbeins. We show that these rules are consistent with the superspace supergravity constraints.
description: 24 pages, latex, no figures. V2 misprints corrected. V3. One reference ([30]) and a comment on it ('Notice added') on p. 19 added
Detecting Near-Fall Events
Creators: name: Michael, Alexi
Publisher: name: The University of British Columbia
Year: 2022

description: Alexi Michael, UBC 3MT Semi-Finalist, presents their research on identifying fall risk by studying near-fall events. With the use of a sensor attached to the body, Alexi will be measuring and comparing the vibrations created in the human body during the motions experienced during near fall simulations and real-life daily motions. Alexi is completing their MASc in Biomedical Engineering under the supervision of Dr. Calvin Kuo.
Adiabatic creation of coherent superposition states via multiple intermediate states
Creators: name: Karpati, A.
name: Kis, Z
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider an adiabatic population transfer process that resembles the well established stimulated Raman adiabatic passage (STIRAP). In our system, the states have nonzero angular momentums $J$, therefore, the coupling laser fields induce transitions among the magnetic sublevels of the states. In particular, we discuss the possibility of creating coherent superposition states in a system with coupling pattern $J=0\Leftrightarrow J=1$ and $J=1\Leftrightarrow J=2$. Initially, the system is in the J=0 state. We show that by two delayed, overlapping laser pulses it is possible to create any final superposition state of the magnetic sublevels $|2,-2>$, $|2,0>$, $|2,+2>$. Moreover, we find that the relative phases of the applied pulses influence not only the phases of the final superposition state but the probability amplitudes as well. We show that if we fix the shape and the time-delay between the pulses, the final state space can be entirely covered by varying the polarizations and relative phases of the two pulses. Performing numerical simulations we find that our transfer process is nearly adiabatic for the whole parameter set.
description: 7 pages, 10 figures
The rotating rigid body model based on a non-twisting frame
Creators: name: Gebhardt, Cristian Guillermo
name: Romero, Ignacio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Physics (physics.class-ph)
subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This work proposes and investigates a new model of the rotating rigid body based on the non-twisting frame. Such a frame consists of three mutually orthogonal unit vectors whose rotation rate around one of the three axis remains zero at all times and thus, is represented by a nonholonomic restriction. Then, the corresponding Lagrange-D'Alembert equations are formulated by employing two descriptions, the first one relying on rotations and a splitting approach, and the second one relying on constrained directors. For vanishing external moments, we prove that the new model possesses conservation laws, i.e., the kinetic energy and two nonholonomic momenta that substantially differ from the holonomic momenta preserved by the standard rigid body model. Additionally, we propose a new specialization of a class of energy-momentum integration schemes that exactly preserves the kinetic energy and the nonholonomic momenta replicating the continuous counterpart. Finally, we present numerical results that show the excellent conservation properties as well as the accuracy for the time-discretized governing equations.
Propagation of Spin-Polarized Electrons Through Interfaces Separating Differently Doped Semiconductor Regions
Creators: name: Pershin, Yuriy V.
name: Privman, Vladimir
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: High degree of electron spin polarization is of crucial importance in operation of spintronic devices. We study the propagation of spin-polarized electrons through a boundary between two n-type semiconductor regions with different doping levels. We assume that inhomogeneous spin polarization is created/injected locally and driven through the boundary by the electric field. The electric field distribution and spin polarization distribution are calculated within a two-component drift-diffusion transport model. We show that an initially created narrow region of spin polarization can be further compressed and amplified near the boundary. Since the boundary involves variation of doping but no real interface between two semiconductor materials, no significant spin-polarization loss is expected. The proposed mechanism will be therefore useful in designing new spintronic devices.
description: Proceedings of the IEEE-Nano 2003, San Francisco, August 2003
Propebela turricula
Creators: name: Bouchard, Blanche
name: Wesselingh, Frank P.
name: Pouwer, Ronald
name: Landau, Bernard
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Mangeliidae
Propebela
Propebela turricula

description: Propebela aff. turricula (Montagu, 1803) (Fig. 12G 1-G 3)
MATERIAL AND DIMENSIONS. — Maximum height 10.7 mm, width 4.4 mm. — RGM.1365012 (90+), leg. ACJ; RGM.1365294 (21), leg. ACJ; RGM.1364929 (31), leg. WG; RGM.1365291 (1), leg. AWJ; RGM.1365117 (115), leg. AWJ.
SPECIES CHARACTERISATION. — Small fusiform shell. Two smooth protoconch whorls. Three quadrate teleoconch whorls separated by well-defined swallow suture. Sculpture consists of two spiral cords conferring the quadrate aspect of the whorls; and around 15 opisthocline axial ribs. Last whorl is covered by numerous spiral cords and ribs, continuing on the base. Well developed columelar lip. Elliptical aperture, with a short, widely open siphonal canal.
DISTRIBUTION. — Lower Pleistocene: Atlantic, Selsoif (this paper).
REMARKS
Even though Propebela turricula has a wide morphological variability particularly in material from the Quaternary of the NSB (Raad et al. 2016), the elongate-shaped specimens with well pronounced ribbing from Selsoif appear to fall outside the range of variation. Further study is required to establish whether this might represent a new species.
description: Published as part of Bouchard, Blanche, Wesselingh, Frank P., Pouwer, Ronald & Landau, Bernard, 2025, The Gelasian gastropod fauna of Selsoif (Manche, France), pp. 39-91 in Geodiversitas 47 (3) on page 74, DOI: 10.5252/geodiversitas2025v47a3, http://zenodo.org/record/14823602
View-invariant Deep Architecture for Human Action Recognition using late fusion
Creators: name: Dhiman, Chhavi
name: Vishwakarma, Dinesh Kumar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Human action Recognition for unknown views is a challenging task. We propose a view-invariant deep human action recognition framework, which is a novel integration of two important action cues: motion and shape temporal dynamics (STD). The motion stream encapsulates the motion content of action as RGB Dynamic Images (RGB-DIs) which are processed by the fine-tuned InceptionV3 model. The STD stream learns long-term view-invariant shape dynamics of action using human pose model (HPM) based view-invariant features mined from structural similarity index matrix (SSIM) based key depth human pose frames. To predict the score of the test sample, three types of late fusion (maximum, average and product) techniques are applied on individual stream scores. To validate the performance of the proposed novel framework the experiments are performed using both cross subject and cross-view validation schemes on three publically available benchmarks- NUCLA multi-view dataset, UWA3D-II Activity dataset and NTU RGB-D Activity dataset. Our algorithm outperforms with existing state-of-the-arts significantly that is reported in terms of accuracy, receiver operating characteristic (ROC) curve and area under the curve (AUC).
description: 10 pages, 7 figures
Probing the Electrostatics of Integer Quantum Hall Edges with Momentum-Resolved Tunnel Spectroscopy
Creators: name: Huber, M.
name: Grayson, M.
name: Schuh, D.
name: Bichler, M.
name: Biberacher, W.
name: Wegscheider, W.
name: Abstreiter, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present measurements of momentum-resolved magneto-tunneling from a perpendicular two-dimensional (2D) contact into integer quantum Hall (QH) edges at a sharp edge potential created by cleaved edge overgrowth. Resonances in the tunnel conductance correspond to coincidences of electronic states of the QH edge and the 2D contact in energy-momentum space. With this dispersion relation reflecting the potential distribution at the edge we can directly measure the band bending at our cleaved edge under the influence of an external voltage bias. At finite bias we observe significant deviations from the flat-band condition in agreement with self-consistent calculations of the edge potential.
Constraints on the anomalous $Wtb$ couplings from $B$-physics experiments
Creators: name: Kozachuk, Anastasiia
name: Melikhov, Dmitri
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze constraints on the anomalous $Wtb$ couplings from $B$-physics experiments, performing a correlated analysis and allowing all anomalous couplings to differ simultaneously from their Standard-Model (SM) values. The $B$-physics observables allow one to probe three linear combinations out of the four anomalous couplings, which parameterize the $Wtb$ vertex under the assumption that the SM symmetries remain the symmetries of the effective theory. The constraints in this work are obtained by taking into account the following $B$-physics observables: the $\bar B^0-B^0$ oscillations, the leptonic $B\to μ^+μ^-$ decays, the inclusive radiative $B\to X_sγ$ decays, and the differential branching fractions in the semileptonic inclusive $B\to X_s μ^+ μ^-$ and exclusive $B\to (K,K^*)μ^+μ^-$ decays at small $q^2$, $q$ the momentum of the $μ^+μ^-$ pair. We find that the SM values of the anomalous couplings belong to the 95\% CL allowed region obtained this way but lie beyond the 68\% allowed region. We also report that the distributions of the anomalous couplings obtained within our scenario differ from the results of the 1D scenario, when only one of the couplings is allowed to deviate from its SM value.
description: 7 pages, extended version. The present analysis involves also exclusive B-decays resulting in more stringent constraints on the anomalous couplings
Nocturnal Enuresis: A Synopsis of Behavioral and Pharmacological Management
Creators: name: QURESHI, SHAZIA FARHEEN
Publisher: name: figshare
Year: 2020
Subjects: subject: 111714 Mental Health
subject: FOS: Health sciences

description: Nocturnal enuresis (NE) is involuntary urination that occurs at night during sleep without any inherent suggestion of frequencyof bedwetting or pathophysiology. For this review, a thorough internet search was done using the search engines of PubMed,Scopus, PsycInfo, ScienceDirect, and Google Scholar. In this review, we glow the light on new-insights of behavioral treatmentof nocturnal enuresis. The management of nocturnal enuresis has converted from a strictly psychopathological perspectiveto a bio-behavioral perspective in the past few decades. There are a number of treatment options are available for NE; such asdrug therapy, bladder training, auro therapy, positive reinforcement, and the enuresis night alarm. Enuresis night alarm therapy,is presenting lower rates of relapse in the long term, higher cure rate and therefore being considered a gold standard treatmentfor enuresis, but it is a conditional treatment; it requires patience, persistence and motivation. Several behavioral approachescan be used for treatment such as enuresis night alarm therapy and various skills oriented components, we must do physicalexamination and rule out a specific medical or organic etiology, as well as urine test should be negative.