cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Polytropic equilibrium and normal modes in cold atomic traps
Creators: name: Terças, H.
name: Mendonça, J. T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The compressibility limit of a cold gas confined in a magneto-optical trap due to multiple scattering of light is a long-standing problem. This scattering mechanism induces long-range interactions in the system, which is responsible for the occurrence of plasma-like phenomena. In the present paper, we investigate the importance of the long-range character of the mediated atom-atom interaction in the equilibrium and dynamical features of a magneto-optical trap. Making use of a hydrodynamical formulation, we derive a generalized Lane-Emden equation modeling the polytropic equilibirum of a magneto-optical trap, allowing us to describe the cross-over between the two limiting cases: temperature dominated and multiple-scattering dominated traps. The normal collective modes of the system are also computed.
MPEC 2023-V261 : 2023 VN9
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VN9

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Wave packet echoes in the motion of trapped atoms
Creators: name: Buchkremer, F.B.J.
name: Dumke, R.
name: Levsen, H.
name: Birkl, G.
name: Ertmer, Wolfgang
Publisher: name: American Physical Society
Year: 2000
Subjects: subject: Computer simulation
subject: Electron transitions
subject: Ground state
subject: Laser beams
subject: Magnetooptical effects
subject: Molecular dynamics
subject: Monte Carlo methods
subject: Optics
subject: Oscillations
subject: Photons
subject: Rubidium
subject: Scattering
subject: Magnetooptical trap
subject: Optical lattice
subject: Trapped atoms
subject: Wave packet echoes
subject: Atoms
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A new echo technique to access the coherent and dissipative dynamics of atomic wave packet oscillations in trapping potentials was experimentally and systematically validated. By using this technique, the coherence time of wave packet oscillations in strongly confining dipole potentials was measured in a regime that was previously inaccessible.
Spin droplet formation in quantum dots
Creators: name: Rogge, M.C.
name: Räsänen, E.
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2011
Subjects: subject: Coulomb blockade
subject: Quantum dots
subject: single-electron tunneling
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A lateral quantum dot with approx. 50 electrons is analyzed in high perpendicular magnetic fields. In a regime with two Landau levels (LL) in the quantum dot information about the spin structure is gained by investigating the position of Coulomb blockade peaks. A typical zig-zag pattern is observed which is roughly explained with the so called Constant Interaction model. However, only states from LL0 can be approximated with this model, while for LL1 more complex electron-electron interactions must be included. This is done with spin density functional theory calculations. As a result, full spin polarization is found for LL1, the so called spin droplet. © 2011 American Institute of Physics.
Braneworld Teleparallel Gravity
Creators: name: Nozari, Kourosh
name: Behboodi, A.
name: Akhshabi, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the gravity in the context of a braneworld teleparallel scenario. The geometrical setup is assumed to be Randall-Sundrum II model where a single positive tension brane is embedded in an infinite AdS bulk. We derive the equivalent of Gauss-Codacci equations in teleparallel gravity and junction conditions in this setup. Using these results we derive the induced teleparallel field equations on the brane. We show that compared to general relativity, the induced field equations in teleparallel gravity contain two extra terms arising from the extra degrees of freedom in the teleparallel Lagrangian. The term carrying the effects of the bulk to the brane is also calculated and its implications are discussed.
description: 7 pages, no figure
Improved bound on facial parity edge coloring
Creators: name: Lužar, Borut
name: Škrekovski, Riste
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 05C10

description: A facial parity edge coloring of a 2-edge connected plane graph is an edge coloring where no two consecutive edges of a facial walk of any face receive the same color. Additionally, for every face f and every color c either no edge or an odd number of edges incident to f are colored by c. Czap, Jendrol', Kardoš and Sotak showed that every 2-edge connected plane graph admits a facial parity edge coloring with at most 20 colors. We improve this bound to 16 colors.
An extension of the Ising-Curie-Weiss model of self-organized criticality with a threshold on the interaction range
Creators: name: Forien, Nicolas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 82B20 (Primary) 82B27, 60K35 (Secondary)

description: In arXiv:1301.6911, Cerf and Gorny constructed a model of self-organized criticality, by introducing an automatic control of the temperature parameter in the generalized Ising Curie-Weiss model. The fluctuations of the magnetization of this spin model are of order $n^{3/4}$ with a limiting law of the form $C\exp(-x^4)$, as in the critical regime of the Curie-Weiss model.
 In this article, we build upon this model by replacing the mean-field interaction with a one-dimensional interaction with a certain range $r_n$ which varies as a function of the number $n$ of particles. In the Gaussian case, we show that the self-critical behaviour observed in the mean-field case extends to interaction ranges $r_n\gg n^{3/4}$ and we show that this threshold is sharp, with different fluctuations when the interaction range is of order of $n^{3/4}$ or smaller than $n^{3/4}$.
description: 26 pages. Version accepted for publication in EJP. This new simplified version merges this article with arXiv:2110.07948
String cosmology
Creators: name: Zagermann, Marco
Publisher: name: Trieste : International School for Advanced Studies
Year: 2009
Subjects: subject: Cosmic strings
subject: Moduli stabilization
subject: String cosmology
subject: High energy physics
subject: Cosmology
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A brief overview of various branches of contemporary string cosmology is given with an emphasis on moduli stabilization, de Sitter vacua, inflation, cosmic strings and primordial gravitational waves.
Disentangling the Complex Electronic Structure of an Adsorbed Nanographene: Cycloarene C108
Creators: name: Martinez-Castro, Jose
name: Bolat, Rustem
name: Fan, Qitang
name: Werner, Simon
name: Arefi, Hadi H.
name: Esat, Taner
name: Sundermeyer, Jörg
name: Wagner, Christian
name: Gottfried, J. Michael
name: Temirov, Ruslan
name: Ternes, Markus
name: Tautz, F. Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We combine low-temperature scanning tunneling spectroscopy, CO functionalized tips and algorithmic data analysis to investigate the electronic structure of the molecular cycloarene C108 (graphene nanoring) adsorbed on a Au(111) surface. We demonstrate that CO functionalized tips enhance the visibility of molecular resonances, both in differential conductance spectra and in real-space topographic images without introducing spurious artifacts. Comparing our experimental data with ab-initio density functional theory reveals a remarkably precise agreement of the molecular orbitals and enables us to disentangle close-lying molecular states only separated by 50 meV at an energy of 2 eV below the Fermi level. We propose this combination of techniques as a promising new route for a precise characterization of complex molecules and other physical entities which have electronic resonances in the tip-sample junction.
description: 20 pages, 7 figures
Solar-cycle precursors and predictions
Creators: name: Jiang, Jie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The sunspot number data during the past 400 years indicates that both the profile and the amplitude of the solar cycle have large variations. Some precursors of the solar cycle were identified aiming to predict the solar cycle. The polar field and the geomagnetic index are two precursors which are received the most attention. The geomagnetic variations during the solar minima are potentially caused by the solar polar field by the connection of the solar open flux. The robust prediction skill of the polar field indicates that the memory of the dynamo process is less than 11 yrs within the framework of the Babcock-Leighton flux transport dynamo. One possible reason to get the short magnetic memory is the high magnetic diffusivity in the convective zone. Our recent studies show that the radial downward pumping is another possible reason. Based upon the mechanism, we well simulate the cycle irregularities during RGO time period. This opens the possibility to set up a standard dynamo based model to predict the solar cycle. In the end, the no correlation between the polar field and the preceding cycle strength due to the nonlinearities and random mechanisms involved in the sunspot emergences are stressed.
description: 12 pages, 12 figures, invited talk, IAU-Symposium 294, Solar and Astrophysical Dynamos and Magnetic Activity
Strata of k-differentials
Creators: name: Bainbridge, Matt
name: Chen, Dawei
name: Gendron, Quentin
name: Grushevsky, Samuel
name: Möller, Martin
Publisher: name: Zürich : European Mathematical Society Publishing House
Year: 2019
Subjects: subject: At geometry
subject: Compactification
subject: Deformation
subject: k-differentials
subject: Strata
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: A k-differential on a Riemann surface is a section of the kth power of the canonical line bundle. Loci of k-differentials with prescribed number and multiplicities of zeros and poles form a natural stratification of the moduli space of k-differentials. In this paper, we give a complete description for the compactification of the strata of k-differentials in terms of pointed stable k-differentials, for all k. The upshot is a global k-residue condition that can also be reformulated in terms of admissible covers of stable curves. Moreover, we study properties of k-differentials regarding their deformations, residues, and at geometric structure.
The 8-bromobaicalein alleviated chikungunya-induced musculoskeletal inflammation and reduced the viral load in healthy adult mice
Creators: name: Cao, Van
name: Loeanurit, Naphat
name: Hengphasatporn, Kowit
name: Hairani, Rita
name: Wacharachaisurapol, Noppadol
name: Prompila, Nantaporn
name: Wittayalertpanya, Supeecha
name: Shigeta, Yasuteru
name: Khotavivattana, Tanatorn
name: Chavasiri, Warinthorn
name: Boonyasuppayakorn, Siwaporn
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Chikungunya virus is a re-emerging arbovirus that has caused epidemic outbreaks in recent decades. Patients in older age groups with high viral load and severe immunologic response during acute infection are likely to develop chronic arthritis and severe joint pain. Currently, no antiviral drug is available. Previous studies suggested that a flavone derivative, 8-bromobaicalein, was a potential dengue and Zika replication inhibitor in a cell-based system targeting flaviviral polymerase. Here we characterized that 8-bromobaicalein inhibited chikungunya virus replication with EC50 of 0.49 ± 0.11 µM in Vero cells. The molecular target predicted at viral nsP1 methyltransferase using molecular binding and fragment molecular orbital calculation. Additionally, oral administration of 250 mg/kg twice daily treatment alleviated chikungunya-induced musculoskeletal inflammation and reduced viral load in healthy adult mice. Pharmacokinetic analysis indicated that the 250 mg/kg administration maintained the compound level above EC99.9 for 12 h. Therefore, 8-bromobaicalein should be a potential candidate for further development as a pan-arboviral drug.
Unveiling the relationship between complex networks metrics and word senses
Creators: name: Amancio, Diego R.
name: Oliveira, Osvaldo N.
name: Costa, Luciano da F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The automatic disambiguation of word senses (i.e., the identification of which of the meanings is used in a given context for a word that has multiple meanings) is essential for such applications as machine translation and information retrieval, and represents a key step for developing the so-called Semantic Web. Humans disambiguate words in a straightforward fashion, but this does not apply to computers. In this paper we address the problem of Word Sense Disambiguation (WSD) by treating texts as complex networks, and show that word senses can be distinguished upon characterizing the local structure around ambiguous words. Our goal was not to obtain the best possible disambiguation system, but we nevertheless found that in half of the cases our approach outperforms traditional shallow methods. We show that the hierarchical connectivity and clustering of words are usually the most relevant features for WSD. The results reported here shine light on the relationship between semantic and structural parameters of complex networks. They also indicate that when combined with traditional techniques the complex network approach may be useful to enhance the discrimination of senses in large texts
description: The Supplementary Information (SI) is available from http://dl.dropbox.com/u/2740286/epl_SI.pdf
Synthesis and Characterization of Vanadium Substituted Potassium Tungsten Bronzes, K x V y W 1-y O 3
Creators: name: Abdullah, A.M.
name: Debnath, Tapas
name: Rüscher, Claus H.
name: Hussain, Altaf
Publisher: name: Rajshahi : University, Faculty of Sciences
Year: 2012
Subjects: subject: Solid-state
subject: Hexagonal crystal system
subject: Tetragonal crystal system
subject: Inorganic chemistry
subject: Chemistry
subject: Mineralogy
subject: Bronze
subject: Vanadium
subject: Potassium
subject: Tungsten
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: A series of vanadium substituted potassium hexagonal tungsten bronzes KxVyW1-yO3 (K-HTB) were prepared by conventional solid state method at 800 °C with compositions of x = 0.30 and 0.00 ? y ? 0.15. A mixture of K-HTB and non bronze phases with y ? 0.20 was observed. The proportion of this non bronze phase increases with increasing vanadium content. The non bronze phases in the mixture could not be indexed yet. In contrast, a very small amount of vanadium can be substituted in potassium tetragonal tungsten bronzes (K-TTB) at 800 °C with x = 0.50 and 0.00 ? y ? 0.02, however at 700 °C vanadium substituted K-TTB can be prepared with 0.00 ? y ? 0.05. Further substitution of vanadium in K-TTB decomposes to K-HTB and non-bronze phases.
On the theory of mass loss in dwarf galaxies: I - basic equations and the case of wave/thermal driven winds
Creators: name: Falceta-Goncalves, Diego
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this work we present a semi-analytical model of galactic wind for dwarf galaxies where thermal and turbulent/momemtum driving mechanisms are studied. The model takes into account wave and internal adiabatic heating mechanisms, as well as radiative and adiabatic cooling. The importance of external sources of energy is discussed. We also studied the role of the spatial distribution of dark matter in the acceleration of the wind and on the mass loss rates. The basic model parameters that regulate the wind mass loss rate and terminal velocity are the gravitational potential profile, the equilibrium temperature of the gas and the amplitude of the turbulent motions of the gas. We found that dwarf galaxies are likely to present quasi-stationary winds with mass loss rates larger than $10^{-3}$M$_{\odot}$yr$^{-1}$ even in the absence of turbulent motions (which is possibly related to the SNe feedback), if the interstellar gas is heated to $T > 10^4 - 10^5$K. We also found that the wind mass loss rate is enhanced for cusped dark matter distributions, such as the NFW-profile, due to the increased pressure gradients at the center of the galaxy. The solutions presented here may serve as benchmarks for numerical simulations, and as inputs for single zone chemical evolution models of dwarf galaxies.
description: MNRAS accepted, 24 pages, 4 fires
Transcription of TIR1-Controlled Genes Can be Regulated within 10 Min by an Auxin-Induced Process. Can TIR1 be the Receptor?
Creators: name: Labusch, Corinna
name: Effendi, Yunus
name: Fulda, Martin
name: Scherer, Günther F.E.
Publisher: name: Lausanne : Frontiers Media Sa
Year: 2016
Subjects: subject: AUXIN-BINDING PROTEIN 1
subject: early auxin-induced genes
subject: auxin transport mutants
subject: auxin receptor mutants
subject: fatty acid-metabolism mutants
subject: protein kinase mutants
subject: protein phosphatase mutants
subject: TRANSPORT INHIBITOR RESPONSE 1
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: ABP1 and TIR1/AFBs are known as auxin receptors. ABP1 is linked to auxin responses several of which are faster than 10 min. TIR1 regulates auxin-induced transcription of early auxin genes also within minutes. We use transcription of such TIR1-dependent genes as indicator of TIR1 activity to show the rapid regulation of TIR1 by exogenous auxin. To this end, we used quantification of transcription of a set of fifteen early auxin-induced reporter genes at t = 10 and t = 30 min to measure this as a TIR1-dependent auxin response. We conducted this study in 22 mutants of auxin transporters (pin5, abcb1, abcb19, and aux1/lax3), protein kinases and phosphatases (ibr5, npr1, cpk3, CPK3-OX, d6pk1, d6pkl1-1, d6pkl3-2, d6pkl1-1/d6pkl2-2, and d6pkl1-1/d6pkl3-2), of fatty acid metabolism (fad2-1, fad6-1, ssi2, lacs4, lacs9, and lacs4/lacs9) and receptors (tir1, tir1/afb2, and tir1/afb3) and compared them to the wild type. After 10 min auxin application, in 18 out of 22 mutants mis-regulated expression of at least one reporter was found, and in 15 mutants transcription of two-to-three out of five selected auxin reporter genes was mis-regulated. After 30 min of auxin application to mutant plants, mis-regulation of reporter genes ranged from one to 13 out of 15 tested reporter genes. Those genes chosen as mutants were themselves not regulated in their expression by auxin for at least 1 h, excluding an influence of TIR1/AFBs on their transcription. The expression of TIR1/AFB genes was also not modulated by auxin for up to 3 h. Together, this excludes a feedback or feedforward of these mutant genes/proteins on TIR1/AFBs output of transcription in this auxin-induced response. However, an auxin-induced response needed an as yet unknown auxin receptor. We suggest that the auxin receptor necessary for the fast auxin-induced transcription modulation could be, instead, ABP1. The alternative hypothesis would be that auxin-induced expression of a protein, initiated by TIR1/AFBs receptors, could initiate these responses and that this unknown protein regulated TIR1/AFB activities within 10 min.
The 8-bromobaicalein alleviated chikungunya-induced musculoskeletal inflammation and reduced the viral load in healthy adult mice.
Creators: name: Cao, Van
name: Loeanurit, Naphat
name: Hengphasatporn, Kowit
name: Hairani, Rita
name: Wacharachaisurapol, Noppadol
name: Prompila, Nantaporn
name: Wittayalertpanya, Supeecha
name: Shigeta, Yasuteru
name: Khotavivattana, Tanatorn
name: Chavasiri, Warinthorn
name: Boonyasuppayakorn, Siwaporn
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Chikungunya virus is a re-emerging arbovirus that has caused epidemic outbreaks in recent decades. Patients in older age groups with high viral load and severe immunologic response during acute infection are likely to develop chronic arthritis and severe joint pain. Currently, no antiviral drug is available. Previous studies suggested that a flavone derivative, 8-bromobaicalein, was a potential dengue and Zika replication inhibitor in a cell-based system targeting flaviviral polymerase. Here we characterized that 8-bromobaicalein inhibited chikungunya virus replication with EC50 of 0.49 ± 0.11 µM in Vero cells. The molecular target predicted at viral nsP1 methyltransferase using molecular binding and fragment molecular orbital calculation. Additionally, oral administration of 250 mg/kg twice daily treatment alleviated chikungunya-induced musculoskeletal inflammation and reduced viral load in healthy adult mice. Pharmacokinetic analysis indicated that the 250 mg/kg administration maintained the compound level above EC99.9 for 12 h. Therefore, 8-bromobaicalein should be a potential candidate for further development as a pan-arboviral drug.
Regulating loops in de Sitter spacetime
Creators: name: Premkumar, Akhil
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Perturbative quantum field theory (QFT) calculations in de Sitter space are riddled with contributions that diverge over time. These contributions often arise from loop integrals, which are notoriously hard to compute in de Sitter. We discuss an approach to evaluate loop integrals that contribute to equal-time correlators of a scalar field theory in a fixed de Sitter background. Our method is based on the Mellin-Barnes representation of correlation functions, which allows us to regulate loop divergences by adjusting the masses of the fields, or by gently deforming the underlying de Sitter spacetime. The resulting expressions have a similar structure as a standard answer from dimensional regularization in flat space QFT. These features of the regulator are illustrated with two examples, worked out in detail. Along the way, we illuminate the physical origin of these divergences and their interpretation with the machinery of the dynamical renormalization group. Our approach regulates the IR divergences of massless and massive particles in the same way. For massless scalars, the loop corrections can be incorporated as systematic improvements to the stochastic inflation framework, allowing for a more precise description of the IR dynamics of such fields in de Sitter.
description: 38 pages, 10 figures. v2: Added closed form expression for anomalous dimension, and updated its plot. v3: Final version that was published in Physical Review D
Understanding quantum entanglement by thermo field dynamics
Creators: name: Hashizume, Yoichiro
name: Suzuki, Masuo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a new method to understand quantum entanglement using the thermo field dynamics (TFD) described by a double Hilbert space. The entanglement states show a quantum-mechanically complicated behavior. Our new method using TFD makes it easy to understand the entanglement states, because the states in the tilde space in TFD play a role of tracer of the initial states. For our new treatment, we define an extended density matrix on the double Hilbert space. From this study, we make a general formulation of this extended density matrix and examine some simple cases using this formulation. Consequently, we have found that we can distinguish intrinsic quantum entanglement from the thermal fluctuations included in the definition of the ordinary quantum entanglement at finite temperatures. Through the above examination, our method using TFD can be applied not only to equilibrium states but also to non-equilibrium states. This is shown using some simple finite systems in the present paper.
description: 24 pages, 6 figures accepted by Physica A (in press)
Structural characterization of the Asf1-Rtt109 interaction and its role in histone acetylation
Creators: name: Lercher, Lukas
name: Danilenko, Nataliya
name: Kirkpatrick, John
name: Carlomagno, Teresa
Publisher: name: Oxford : Oxford University Press
Year: 2018
Subjects: subject: article
subject: competition
subject: histone acetylation
subject: human
subject: human experiment
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Acetylation of histone H3 at lysine-56 by the histone acetyltransferase Rtt109 in lower eukaryotes is important for maintaining genomic integrity and is required for C. albicans pathogenicity. Rtt109 is activated by association with two different histone chaperones, Vps75 and Asf1, through an unknown mechanism. Here, we reveal that the Rtt109 C-terminus interacts directly with Asf1 and elucidate the structural basis of this interaction. In addition, we find that the H3 N-terminus can interact via the same interface on Asf1, leading to a competition between the two interaction partners. This, together with the recruitment and position of the substrate, provides an explanation of the role of the Rtt109 C-terminus in Asf1-dependent Rtt109 activation.
title: Эрозия поверхности горных пород при одиночном ударе абразивной частицы с учетом образования лунки выкола
Creators: name: Аверин, Евгений
Publisher: name: Известия Тульского государственного университета. Технические науки
Year: 2014

description: Предложен метод определения объема горных пород, уносимого с поверхности массива при ударе одиночной абразивной частицы. В основу метода положены расчетные схемы, полученные путем применения к проблеме разрушения высокоскоростными гидроабразивными струями горных пород и других хрупких материалов методов механики разрушения. В механике разрушения разрушение материалов рассматривается как процесс зарождения и развития трещин.
High-temperature cuprate superconductors studied by x-ray Compton scattering and positron annihilation spectroscopies
Creators: name: Barbiellini, Bernardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The bulk Fermi surface in an overdoped ($x = 0.3$) single crystal of La$_{2-x}$Sr$_{x}$CuO$_{4}$ has been observed by using x-ray Compton scattering. This momentum density technique also provides a powerful tool for directly seeing what the dopant Sr atoms are doing to the electronic structure of La$_2$CuO$_{4}$. Because of wave function effects, positron annihilation spectroscopy does not yield a strong signature of the Fermi surface in extended momentum space, but it can be used to explore the role of oxygen defects in the reservoir layers for promoting high temperature superconductivity.
description: Invited talk presented at the 16th International Conference on Positron Annihilation (ICPA-16) held at the University of Bristol, United Kingdom during the period of 19-24 August, 2012
Weak Bialgebras of Fractions
Creators: name: Bennoun, Steve
name: Pfeiffer, Hendryk
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We construct the algebra of fractions of a Weak Bialgebra relative to a suitable denominator set of group-like elements that is `almost central', a condition we introduce in the present article which is sufficient in order to guarantee existence of the algebra of fractions and to render it a Weak Bialgebra. The monoid of all group-like elements of a coquasi-triangular Weak Bialgebra, for example, forms a suitable set of denominators as does any monoid of central group-like elements of an arbitrary Weak Bialgebra. We use this technique in order to construct new Weak Bialgebras whose categories of finite-dimensional comodules relate to SL2-fusion categories in the same way as GL(2) relates to SL(2).
description: 10 pages; LaTeX 2e with xypic diagrams
title: Математическая модель процесса эрозии горных пород гидроабразивной струей
Creators: name: Жабин, Александр
name: Лавит, Игорь
name: Аверин, Евгений
Publisher: name: Известия Тульского государственного университета. Технические науки
Year: 2014

description: Предложен метод математического описания процесса эрозии горных пород гидроабразивной струей. В основе метода лежит представление о том, что процесс эрозии хрупких материалов обусловлен образованием поперечных трещин при ударе частицы о поверхность. Сформулирована задача об эрозии поверхности горных пород (хрупких материалов) под действием гидроабразивной струи. Необходимые для расчета такой эрозии данные можно получить из решения задачи о разрушении хрупкого массива при ударе о поверхность абсолютно твердой абразивной частицы. Дана постановка задачи о расчете кинетики напряженно-деформированного состояния массива при ударе частицы. Разработан метод решения этой задачи, основанный на методе конечных элементов, а также метод оценки прочности массива, дающий возможность определить объем эродируемого материала.
Campanula bononiensis
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C. bononiensis X glomerata- 2: Bei Branson (F. 1914,P. 1918).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
The mass-concentration relation in massive galaxy clusters at redshift ~1
Creators: name: Sereno, Mauro
name: Covone, Giovanni
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Mass and concentration of clusters of galaxies are related and evolving with redshift. We study the properties of a sample of 31 massive galaxy clusters at high redshift, 0.8 < z < 1.5, using weak and strong lensing observations. Concentration is a steep function of mass, c_{200} ~M_{200}^{-0.83 +-0.39}, with higher-redshift clusters being less concentrated. Mass and concentration from the stacked analysis, M_{200}=(4.1+-0.4)x10^{14}M_Sun/h and c_{200}=2.3+-0.2, are in line with theoretical results extrapolated from the local universe. Clusters with signs of dynamical activity preferentially feature high concentrations. We discuss the possibility that the whole sample is a mix of two different kinds of haloes. Over-concentrated clusters might be accreting haloes out of equilibrium in a transient phase of compression, whereas less concentrated ones might be more relaxed.
description: 10 pages, 3 figures; in press on MNRAS
Theranostic liposome–nanoparticle hybrids for drug delivery and bioimaging
Creators: name: Seleci, Muharrem
name: Ag Seleci, Didem
name: Scheper, Thomas
name: Stahl, Frank
Publisher: name: Basel : MDPI AG
Year: 2017
Subjects: subject: Bioimaging
subject: Drug delivery
subject: Quantum dots
subject: Theranostic liposomes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Advanced theranostic nanomedicine is a multifunctional approach which combines the diagnosis and effective therapy of diseased tissues. Here, we investigated the preparation, characterization and in vitro evaluation of theranostic liposomes. As is known, liposome–quantum dot (L–QD) hybrid vesicles are promising nanoconstructs for cell imaging and liposomal-topotecan (L-TPT) enhances the efficiency of TPT by providing protection against systemic clearance and allowing extended time for it to accumulate in tumors. In the present study, hydrophobic CdSe/ZnS QD and TPT were located in the bilayer membrane and inner core of liposomes, respectively. Dynamic light scattering (DLS), zeta potential (ζ) measurements and fluorescence/absorption spectroscopy were performed to determine the vesicle size, charge and spectroscopic properties of the liposomes. Moreover, drug release was studied under neutral and acidic pH conditions. Fluorescence microscopy and flow cytometry analysis were used to examine the cellular uptake and intracellular distribution of the TPT-loaded L–QD formulation. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was utilized to investigate the in vitro cytotoxicity of the formulations on HeLa cells. According to the results, the TPT-loaded L–QD hybrid has adequate physicochemical properties and is a promising multifunctional delivery vehicle which is capable of a simultaneous co-delivery of therapeutic and diagnostic agents.
Finite-size effect on evolution of Griffiths phase in manganite nanoparticles
Creators: name: Pramanik, A. K.
name: Banerjee, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The finite-size effect on the evolution of Griffiths phase (GP) is studied using nanoparticles of half-doped manganite Pr$_{0.5}$Sr$_{0.5}$MnO$_{3}$ with different average particle sizes but having similar structural parameters. All the samples exhibit pronounced GP behavior. With reducing particle size, the Griffiths temperature remains almost unchanged but the characteristic critical temperature $T_c^R$ decreases and the GP properties are strengthened. It is noteworthy that the shift of $T_c^R$ follows finite-size scaling with the particle size revealing an exotic interplay between the GP properties and the sample dimension. This reinforces an earlier proposal of length-scale related evolution of GP.
description: This study brings out an interesting interplay between finite-size effect and Griffiths phase properties, and shows length-scale induced its evolution
On the possible noble gas deficiency of Pluto's atmosphere
Creators: name: Mousis, Olivier
name: Lunine, Jonathan I.
name: Mandt, Kathleen E.
name: Schindhelm, Rebecca
name: Weaver, Harold A.
name: Stern, S. Alan
name: Waite, J. Hunter
name: Gladstone, Randy
name: Moudens, Audrey
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We use a statistical-thermodynamic model to investigate the formation and composition of noble-gas-rich clathrates on Pluto's surface. By considering an atmospheric composition close to that of today's Pluto and a broad range of surface pressures, we find that Ar, Kr and Xe can be efficiently trapped in clathrates if they formed at the surface, in a way similar to what has been proposed for Titan. The formation on Pluto of clathrates rich in noble gases could then induce a strong decrease in their atmospheric abundances relative to their initial values. A clathrate thickness of order of a few centimeters globally averaged on the planet is enough to trap all Ar, Kr and Xe if these noble gases were in protosolar proportions in Pluto's early atmosphere. Because atmospheric escape over an extended period of time (millions of years) should lead to a noble gas abundance that either remains constant or increases with time, we find that a potential depletion of Ar, Kr and Xe in the atmosphere would best be explained by their trapping in clathrates. A key observational test is the measurement of Ar since the Alice UV spectrometer aboard the New Horizons spacecraft will be sensitive enough to detect its abundance $\sim$10 times smaller than in the case considered here.
description: Accepted for publication in Icarus
Microscopic analysis of sub-barrier fusion enhancement in $^{132}$Sn+$^{40}$Ca vs. $^{132}$Sn+$^{48}$Ca}
Creators: name: Oberacker, V. E.
name: Umar, A. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We provide a theoretical analysis of recently measured fusion cross sections which show a surprising enhancement at low $E_\mathrm{c.m.}$ energies for the system $^{132}$Sn+$^{40}$Ca as compared to the more neutron-rich system $^{132}$Sn+$^{48}$Ca. Dynamic microscopic calculations are carried out on a three-dimensional lattice with a time-dependent density-constrained density functional theory. There are no adjustable parameters, the only input is the Skyrme effective NN interaction. Heavy-ion potentials $V(R)$, coordinate-dependent mass parameters $M(R)$, and total fusion cross sections $σ(E_\mathrm{c.m.})$ are calculated for both systems. We are able to explain the measured fusion enhancement in terms of the {\it narrower width} of the ion-ion potential for $^{132}$Sn+$^{40}$Ca, while the barrier heights and positions are approximately the same in both systems.
description: 5 pages, 5 figures. arXiv admin note: text overlap with arXiv:1201.5318
Production of the X(3872) in charmonia radiative decays
Creators: name: Guo, Feng-Kun
name: Hanhart, Christoph
name: Meißner, Ulf-G.
name: Wang, Qian
name: Zhao, Qiang
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss the possibilities of producing the X(3872), which is assumed to be a D \bar D^* bound state, in radiative decays of charmonia. We argue that the ideal energy regions to observe the X(3872) associated with a photon in e^+e^- annihilations are around the Y(4260) mass and around 4.45 GeV, due to the presence of the S-wave D \bar D_1(2420) and D^* \bar D_1(2420) threshold, respectively. Especially, if the Y(4260) is dominantly a D \bar D_1 molecule and the X(3872) a D \bar D^* molecule, the radiative transition strength will be quite large.
description: 15 pages, 3 figures. Typos fixed, to appear in Phys. Lett. B
The mericarp of the halophyte Crithmum maritimum (Apiaceae): Structural features, germination, and salt distribution
Creators: name: Atia, Abdallah
name: Debez, Ahmed
name: Barhoumi, Zouhaier
name: Pacini, Ettore
name: Abdelly, Chedly
name: Smaoui, Abderrazak
Publisher: name: Heidelberg : Springer Verlag
Year: 2010
Subjects: subject: Crithmum maritimum L.
subject: Dispersal
subject: Fruit
subject: Spongy coat
subject: X-ray microanalysis
subject: Apiaceae
subject: Apiales
subject: Crithmum maritimum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: At maturation and during seed fall and dispersal, halophyte seeds may be subjected to invasion by salt ions. How these seeds remain viable in such hostile environments is however still unclear, depending for instance on the species and the family. In the Apiaceae, the mericarp (fruit) shows a wide range of morphological and anatomical modifications, many of which may enhance the adaptation to severe environmental conditions. Therefore, structural features, ion accumulation, and long-term floating capacity were investigated in the fruit (mericarp) of the halophyte Crithmum maritimum L. The mericarp was composed of a spongy outer coat, a secretory envelope, a thin endocarp reduced to a unicellular layer delimiting the endosperm, and an embryo. Both of the secretory canals and the endocarp adhered after complete ripening of the mericarp, while the epicarp and much of the mesocarp formed the spongy coat. Assessing long-term floating ability of the fruit under laboratory conditions revealed that even after 60 d, more than 98% of C. maritimum L. mericarps still floated over seawater. Seed germination was delayed and reduced by the spongy coat. The X-ray microanalysis revealed that the spongy coat and the secretory canals contained essentially Cl and Na, while seeds, i.e. endosperm and embryo, accumulated mostly Mg, K and P. In a subsequent experiment designed to simulate salt leaching by rain, most of the salt accumulated in the spongy coat and seeds was released after 2 h imbibition in distilled water. Taken together, these results highlight the protective role of the mericarp and the likely involvement of this structure in the seed dispersal of C. maritimum L. This may ultimately have eco-physiological implications explaining the successful establishment of this halophyte in its native saline biotopes.
Root-specific expression of early auxin-regulated
Creators: name: Fedorovna Shishova, Mariya
name: Pähler, Martin
name: Stahl, Frank
name: Scherer, Guenther
Publisher: name: Saint-Petersburg : ECO-Vector LLC
Year: 2014
Subjects: subject: Gene
subject: Gene expression
subject: Microarray
subject: Auxin
subject: Arabidopsis
subject: Genetics
subject: FOS: Biological sciences
subject: Gene family
subject: Hormone
subject: Biology
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: At the variable environmental conditions plant growth and development are under the control of different factors triggered shifts in hormonal balance and followed changes in intensity of hormone-induced gene expression. Root-specific expression of early auxin-regulated genes, belonged to Aux/IAAs, SAURs, ARFs и GH3s gene families, was tested with specially designed chip. An auxin treatment (15, 30 and 60 min) led to increase of IAA1, IAA3, IAA5, IAA11, IAA19 and GH3-1, GH3-3, GH3-5 genes. Intensification of SAUR9 and SAUR10 genes expression was less significant and appeared only at 30 min.
Root adaptations to soils with low fertility and aluminium toxicity
Creators: name: Rao, Idupulapati M.
name: Miles, John W.
name: Beebe, Stephen E.
name: Horst, Walter J.
Publisher: name: Oxford : Oxford University Press
Year: 2016
Subjects: subject: Aluminium
subject: Breeding
subject: Interspecific hybridization
subject: Low soil fertility
subject: Nitrogen
subject: Nutrient acquisition
subject: Phosphorus
subject: Problem soils
subject: Root phenes
subject: Root physiology
subject: Brachiaria
subject: Medicago sativa
subject: Phalaris aquatica
subject: Phenes
subject: Zea mays
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: Background Plants depend on their root systems to acquire the water and nutrients necessary for their survival in nature, and for their yield and nutritional quality in agriculture. Root systems are complex and a variety of root phenes have been identified as contributors to adaptation to soils with low fertility and aluminium (Al) toxicity. Phenotypic characterization of root adaptations to infertile soils is enabling plant breeders to develop improved cultivars that not only yield more, but also contribute to yield stability and nutritional security in the face of climate variability. Scope In this review the adaptive responses of root systems to soils with low fertility and Al toxicity are described. After a brief introduction, the purpose and focus of the review are outlined. This is followed by a description of the adaptive responses of roots to low supply of mineral nutrients [with an emphasis on low availability of nitrogen (N) and phosphorus (P) and on toxic levels of Al]. We describe progress in developing germplasm adapted to soils with low fertility or Al toxicity using selected examples from ongoing breeding programmes on food (maize, common bean) and forage/feed (Brachiaria spp.) crops. A number of root architectural, morphological, anatomical and metabolic phenes contribute to the superior performance and yield on soils with low fertility and Al toxicity. Major advances have been made in identifying root phenes in improving adaptation to low N (maize), low P (common bean) or high Al [maize, common bean, species and hybrids of brachiariagrass, bulbous canarygrass (Phalaris aquatica) and lucerne (Medicago sativa)]. Conclusions Advanced root phenotyping tools will allow dissection of root responses into specific root phenes that will aid both conventional and molecular breeders to develop superior cultivars. These new cultivars will play a key role in sustainable intensification of crop–livestock systems, particularly in smallholder systems of the tropics. Development of these new cultivars adapted to soils with low fertility and Al toxicity is needed to improve global food and nutritional security and environmental sustainability. © The Author 2016.
PRM path smoothening by circular arc fillet method for mobile robot navigation
Creators: name: Ouach, Meral Kılıçarslan
name: Eren, Tolga
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Motion planning and navigation, especially for mobile robots operating in complex navigational environments, has been a central problem since robotics started. A heuristic way to address it is the construction of a graph-based representation (a path) capturing the connectivity of the configuration space. Probabilistic Roadmap is a commonly used method by the robotics community to build a path for navigational mobile robot path planning. In this study, path smoothening by arc fillets is proposed for mobile robot path planning after obtaining the path from PRM in the presence of the obstacle. The proposed method runs in two steps; the first one is generating the shortest path between the initial state to one of the goal states in the obstacle presence environment, wherein the PRM is used to construct a straight-lined path by connecting the intermediate nodes. The second step is smoothening every corner caused by node presence. Smoothening the corners with arc fillets ensures smooth turns for the mobile robots. The suggested method has been simulated and tested with different PRM features. Experiment results show that the constructed path is not just providing smooth turning; it is also shorter and quicker to finish for a robot while avoiding obstacles.
description: 22 pages, 18 figures, 6 tables