cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pheidole cuevasi Wilson, 2003, new species
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole cuevasi

description: Pheidole cuevasi new species
Types Mus. Comp. Zool. Harvard.
Etymology Named after John de Cuevas, friend, author, and field companion.
diagnosis A member of the " jujuyensis complex" of the larger fallax group, comprising araneoides, cuevasi, durionei, jujuyensis, kugleri, leonina, leptina, lucretii, lupus, paraensis, punctithorax, tijucana, wallacei, and wolfringi, which complex is characterized in both major and minor by slender body form and exceptionally long antennal scapes and petiolar pedicels; also in the major by a proportionately small head; and in the minor by a strongly developed nuchal collar. P. cuevasi is distinguished as follows. Major: rugoreticulum covering all the dorsal surface of the head except the occipital lobes, frontal lobes, and middle of clypeus; antennal scapes just reach the occipital corners; pronotal dorsum partly covered by transverse carinulae; first gastral tergite entirely smooth and shiny.
Minor: occipital neck extremely drawn out, and nuchal collar prominent; propodeal spines reduced to denticles. Both castes reddish yellow.
Measurements (mm) Holotype major: HW 1.56, HL 1.62, SL 1.32, EL 0.22, PW 0.80. Paratype minor: HW 0.60, HL 1.04, SL 1.58, EL 0.20, PW 0.44.
Color Major: body and mandibles reddish yellow ("orange") to very light reddish brown. Minor: reddish yellow ("light orange").
Range In addition to the Peruvian type series, I have seen series collected near Diamantino, Mato Grosso, and Benjamin Constant, Amazonas, Brazil (W. L. Brown).
biology The type series was reared by Stefan Cover (personal communication) from an incipient colony found in terra firme rainforest at Cuzco Amazonico, Peru, and nesting in a large, crumbling dead log.
figure Upper: holotype, major. Lower: paratype, minor. PERU: Cuzco Amazonico, 15 km northeast of Puerto Maldonado, Madre de Dios (Stefan Cover and John E. Tobin). Scale bars = 1 mm.
description: Published as part of Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA :Harvard University Press on page 280
An explanation of the ABC enhancement in the dd -> alpha X reaction at intermediate energies
Creators: name: Gardestig, A.
name: Faldt, G.
name: Wilkin, C.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dd -> alpha X reaction is studied in a model where each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN -> d pi reaction. The condition that the two deuterons fuse to form an alpha-particle then leads to peaks at small missing masses, the well-known ABC enhancement, but also a broad structure around the maximum missing mass. With a simplified input amplitude the model gives a quantitative description of both the alpha-particle momentum and angular distributions for a deuteron beam energy of 1250 MeV.
description: 10 pages, Latex2e, 1 eps figure, submitted to Phys. Lett. B
Presence of a repressor protein for testis-specific H2B (TH2B) histone gene in early stages of spermatogenesis
Creators: name: Chae, CB
name: Lim, K
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: The rat testis-specific TH2B histone gene assumes a hypomethylated chromatin structure at all stage of spermatogenesis. However, the TH2B mRNA level is very low in pre-meiotic spermatogenic cells and rises sharply in meiotic pachytene spermatocytes. The low level of TH2B mRNA in pre-meiotic spermatogenic cells appears to be a result of transcriptional repression of the gene by a pre-meiotic cell-specific protein which binds to a site between the TATA element and the transcription initiation site of TH2B gene.The rat testis-specific TH2B histone gene assumes a hypomethylated chromatin structure at all stage of spermatogenesis. However, the TH2B mRNA level is very low in pre-meiotic spermatogenic cells and rises sharply in meiotic pachytene spermatocytes. The low level of TH2B mRNA in pre-meiotic spermatogenic cells appears to be a result of transcriptional repression of the gene by a pre-meiotic cell-specific protein which binds to a site between the TATA element and the transcription initiation site of TH2B gene.
Validating Quantum-Classical Programming Models with Tensor Network Simulations
Creators: name: McCaskey, Alexander
name: Dumitrescu, Eugene
name: Chen, Mengsu
name: Lyakh, Dmitry
name: Humble, Travis S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The exploration of hybrid quantum-classical algorithms and programming models on noisy near-term quantum hardware has begun. As hybrid programs scale towards classical intractability, validation and benchmarking are critical to understanding the utility of the hybrid computational model. In this paper, we demonstrate a newly developed quantum circuit simulator based on tensor network theory that enables intermediate-scale verification and validation of hybrid quantum-classical computing frameworks and programming models. We present our tensor-network quantum virtual machine (TNQVM) simulator which stores a multi-qubit wavefunction in a compressed (factorized) form as a matrix product state, thus enabling single-node simulations of larger qubit registers, as compared to brute-force state-vector simulators. Our simulator is designed to be extensible in both the tensor network form and the classical hardware used to run the simulation (multicore, GPU, distributed). The extensibility of the TNQVM simulator with respect to the simulation hardware type is achieved via a pluggable interface for different numerical backends (e.g., ITensor and ExaTENSOR numerical libraries). We demonstrate the utility of our TNQVM quantum circuit simulator through the verification of randomized quantum circuits and the variational quantum eigensolver algorithm, both expressed within the eXtreme-scale ACCelerator (XACC) programming model.
Purification and characterization of the bacteriophage T7 gene 2.5 protein : a single-stranded DNA-binding protein
Creators: name: Tabor, Stanley
name: Kim, Young Tae
name: Griffith, JD
name: Bortner, C
name: Richardson, CC
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Bacteriophage T7 gene 2.5 protein has been purified to homogeneity from cells overexpressing its gene. Native gene 2.5 protein consists of a dimer of two identical subunits of molecular weight 25,562. Gene 2.5 protein binds specifically to single-stranded DNA with a stoichiometry of approximately 7 nucleotides bound per monomer of gene 2.5 protein; binding appears to be noncooperative. Electron microscopic analysis shows that gene 2.5 protein is able to disrupt the secondary structure of single-stranded DNA. The single-stranded DNA is extended into a chain of gene 2.5 protein dimers bound along the DNA. In fluorescence quenching and nitrocellulose filter binding assays, the binding constants of gene 2.5 protein to single-stranded DNA are 1.2 x 10(6) M-1 and 3.8 x 10(6) M-1, respectively. Escherichia coli single-stranded DNA-binding protein and phage T4 gene 32 protein bind to single-stranded DNA more tightly by a factor of 25. Fluorescence spectroscopy suggests that tyrosine residue(s), but not tryptophan residues, on gene 2.5 protein interacts with single-stranded DNA.
title: ADCO, Boursier de Cîteaux : comptes (1489-1493) (11 H 1166), f. 00344
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166), f. 00344, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Effect of Random Impurities on Fluctuation-Driven First Order Transitions
Creators: name: Cardy, John
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We analyse the effect of quenched uncorrelated randomness coupling to the local energy density of a model consisting of N coupled two-dimensional Ising models. For N>2 the pure model exhibits a fluctuation-driven first order transition, characterised by runaway renormalisation group behaviour. We show that the addition of weak randomness acts to stabilise these flows, in such a way that the trajectories ultimately flow back towards the pure decoupled Ising fixed point, with the usual critical exponents alpha=0, nu=1, apart from logarithmic corrections. We also show by examples that, in higher dimensions, such transitions may either become continuous or remain first order in the presence of randomness.
description: 13 pp., LaTeX
Hydro-micromechanical modeling of wave propagation in saturated granular media
Creators: name: Cheng, Hongyang
name: Luding, Stefan
name: Rivas, Nicolás
name: Harting, Jens
name: Magnanimo, Vanessa
Publisher: name: arXiv
Year: 2018
Subjects: subject: Geophysics (physics.geo-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Biot's theory predicts the wave velocities of a saturated poroelastic granular medium from the elastic properties, density and geometry of its dry solid matrix and the pore fluid, neglecting the interaction between constituent particles and local flow. However, when the frequencies become high and the wavelengths comparable with particle size, the details of the microstructure start to play an important role. Here, a novel hydro-micromechanical numerical model is proposed by coupling the lattice Boltzmann method (LBM) with the discrete element method (DEM. The model allows to investigate the details of the particle-fluid interaction during propagation of elastic waves While the DEM is tracking the translational and rotational motion of each solid particle, the LBM can resolve the pore-scale hydrodynamics. Solid and fluid phases are two-way coupled through momentum exchange. The coupling scheme is benchmarked with the terminal velocity of a single sphere settling in a fluid. To mimic a pressure wave entering a saturated granular medium, an oscillating pressure boundary condition on the fluid is implemented and benchmarked with one-dimensional wave equations. Using a face centered cubic structure, the effects of input waveforms and frequencies on the dispersion relations are investigated. Finally, the wave velocities at various effective confining pressures predicted by the numerical model are compared with with Biot's analytical solution, and a very good agreement is found. In addition to the pressure and shear waves, slow compressional waves are observed in the simulations, as predicted by Biot's theory.
description: Manuscript submitted to International Journal for Numerical and Analytical Methods in Geomechanics
Quantal secretion of catecholamines measured from individual bovine adrenal medullary cells permeabilized with digitonin
Creators: name: Jankowski, J A
name: Wightman, R M
name: Schroeder, T J
name: Holz, R W
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Secretion of catecholamines from individual bovine adrenal medullary cells grown in primary culture has been investigated with a carbon-fiber microelectrode placed adjacent to the cells. Oxidation of catecholamines at the electrode surface results in changes in current, which give a real-time measure of catecholamine secretion. Chemical agents are introduced to the individual cells by pressure ejection from micropipettes. When incubated in Ca(2+)-containing buffers, secretion is not observed. However, permeabilization of the cell by exposure to 20 microM digitonin for approximately 15 s results in a Ca(2+)-dependent secretion, and the contents of individual vesicles are detected in the form of sharp spikes. The rate at which spikes occur is a function of the Ca2+ concentration in the external media and reaches a maximum at 19 microM Ca2+. The area of the spikes range from 0.1 to greater than 10 picocoulombs, but the majority are less than 2 picocoulombs, corresponding to less than 6 x 10(6) molecules detected per spike. Histograms of the spike areas are essentially independent of the Ca2+ concentration, indicating that the population of vesicles which undergo exocytosis is the same for all concentrations. Exocytotic secretion can be distinguished from nonexocytotic release by analysis of the shape of the spikes.
Gamma-Ray Bursts, Cosmic-Rays and Neutrinos
Creators: name: Waxman, E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The gamma-ray burst (GRB) model for production of ultra-high-energy cosmic-rays (UHECRs) is based on the hypothesis that GRBs arise from the dissipation of the kinetic energy of relativistic fireballs at cosmological distances. Recent GRB afterglow observations support the validity of this hypothesis and provide quantitative support for the model. The inferred physical fireball parameters imply that protons may be accelerated to >10^20 eV, and the inferred GRB energy generation rate is similar to that required to account for the observed flux of UHECRs. Strong suppression of UHECR flux is expected in this model above 10^19.7 eV, due to proton interaction with CMB photons. Strong deviations from model flux derived under the assumption of uniform source distribution is expected above 10^20 eV, due to source clustering. The flux above 10^20.5 eV is expected to be dominated by few, narrow spectrum sources. While model predictions can not be tested (with high confidence level) at present, the predicted signatures should be observed with the planned Auger and Telescope-Array UHECR detectors. A natural consequence of the GRB model of UHECR production is the conversion of a large fraction, ~10%, of the fireball energy to accompanying burst of \~10^14 eV and ~10^18 eV neutrinos. A km^2 neutrino detector would observe several tens of events per year correlated with GRBs, and test for neutrino properties (e.g. flavor oscillations, for which upward moving tau's would be a unique signature, and coupling to gravity) with an accuracy many orders of magnitude better than is currently possible.
description: 10 pages; in press, Proc. TAUP99 [Nucl. Phys. B (Proc. Suppl.)], ed. M. Froissart, J. Dumarchez and D. Vignaud
title: ADCO, Deuxième cartulaire ou Grand cartulaire de l'abbaye de Molesme, Cart. 143 (7 H 7), 153 fol, f. 0101v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: Petot, Frédéric
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Deuxième cartulaire ou Grand cartulaire de l'abbaye de Molesme, Archives départementales de la Côte-d'Or, Cart. 143 (7 H 7), 153 fol, f. 0101v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Deuxième cartulaire ou Grand cartulaire de l'abbaye de Molesme, Archives départementales de la Côte-d'Or, Cart. 143 (7 H 7), 153 fol, f. 0101v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Molesme
description: Provenance: http://www.wikidata.org/entity/Q334044
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb137389344
Strangeness Enhancement and System Size in the Hadronic Gas Model
Creators: name: Muronga, Azwinndini
name: Cleymans, Jean
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Strange particle enhancement in relativistic ion collisions is discussed with particular attention to the dependence on the size of the volume and/or the baryon number of the system.
description: Latex file and five postscript figures
Pheidole cursor Wilson, 2003, new species
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole cursor

description: Pheidole cursor new species
Types Mus. Comp. Zool. Harvard.
Etymology L cursor, runner.
Diagnosis A very distinctive member of the fallax group recognizable by the following traits.
Major: posterior third of dorsal head profile lined with a dense carpet of very short, suberect hairs of about equal length; the occipital margin in full-face view lined with similar, subrecumbent hairs; a similar layer of short subrecumbent hairs lines the ventral profile of the first gastral sternite; nadir of occipital cleft deep; rugoreticulum on each side of head extends from eye to antennal fossa and frontal carina; humerus in dorsal-oblique view prominent above rest of pronotum; postpetiole seen from above diamond-shaped. Minor: bicolored (see below); propodeal spine reduced to denticle; occiput constricted to a neck, with very broad nuchal collar. Measurements (mm) Holotype major: HW 1.50, HL 1.56, SL 1.00, EL 0.22, PW 0.68. Paratype minor: HW 0.54, HL 0.74, SL 1.02, EL 0.16, PW 0.38. color Major: body and mandibles light reddish brown, legs reddish yellow.
Minor: bicolorous, with head medium brown, mesosoma light brown, and gaster and appendages dark yellow.
Range In addition to the types and numerous other series from Cuzco Amazonico, I have seen collections from Benjamin Constant, and Iraboca, near Belem, Amazonian Brazil (W. L. Brown).
Biology According to Stefan Cover (personal communication), cursor was common in both terra firme and seasonally flooded rainforest at Cuzco Amazonico, Peru, nesting in both small and large pieces of rotten wood on the forest floor. Colonies were monogynous and relatively small, containing fewer than 300 workers. The workers were predaceous, and no seed caches or other evidences of seed harvesting were found.
Figure Upper: holotype, major. Lower: paratype, minor. PERU: Cuzco Amazonico, 15 km northeast of Puerto Maldonado, Madre de Dios (Stefan Cover and John E. Tobin). Scale bars = 1 mm.
description: Published as part of Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA :Harvard University Press on page 281
Ras (CXXX) and Rab (CC/CXC) prenylation signal sequences are unique and functionally distinct
Creators: name: ABE, K
name: MCLAIN, T
name: CLARK, G.
name: LUTZ, R.
name: DER, C.
name: COX, A.
name: SINENSKY, M
name: KHOSRAVI-FAR, R
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Rab proteins typically lack the consensus carboxyl-terminal CXXX motif that signals isoprenoid modification of Ras and other isoprenylated proteins and, instead, terminate in either CC or CXC sequences (C = cysteine, X = any amino acid). To compare the functional relationship between the Ras CXXX and the Rab CC/CXC motifs, we have generated chimeric Ras proteins terminating in Rab carboxyl-terminal CC or CXC sequences. These mutant Ras proteins were not isoprenylated in vitro or in vivo, demonstrating that the CC and CXC sequences alone are not sufficient to replace a CXXX sequence to signal Ras isoprenoid modification. Surprisingly, chimeric Ras/Rab proteins terminating in significant lengths of carboxyl-terminal sequences from Rab1b (7-139 residues), Rab2 (5-151 residues), or Rab3a (12 residues) were also not isoprenylated. These results demonstrate that the sequence requirements for isoprenoid modification of Rab proteins are more complex than the simple tetrapeptide CXXX sequence for isoprenoid modification of Ras proteins and suggest that the Rab geranylgeranyl transferase(s) requires recognition of protein conformation to signal the addition of geranylgeranyl groups. Finally, competition studies demonstrate that a common geranylgeranyl transferase activity is responsible for the modification of Rab proteins terminating in CC or CXC motifs.
Control of the finite size corrections in exact diagonalization studies
Creators: name: Gros, Claudius
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the possibility of controlling the finite size corrections in exact diagonalization studies quantitatively. We consider the one- and two dimensional Hubbard model. We show that the finite-size corrections can be be reduced systematically by a grand-canonical integration over boundary conditions. We find, in general, an improvement of one order of magnitude with respect to studies with periodic boundary conditions only. We present results for ground-state properties of the 2D Hubbard model and an evaluation of the specific heat for the 1D and 2D Hubbard model.
description: Phys. Rev. B (Brief Report), in press
title: Age Tracking Performance and the Measurement of Workload by a Secondary Tasks
Creators: name: Diaz, Manuel Francisco
Publisher: name: Old Dominion University
Year: 1984

description: The purpose of this study was to investigate age differences in tracking performance and in the amount of workload imposed by the tracking task. Twelve subjects between the ages of 18 and 22, and 12 subjects between the ages of 48 and 67 performed a serial, choice-reaction-time task alone and concurrently with a pursuit rotor tracking task. The choice reaction time task served as the secondary task and the pursuit rotor tracking task as the primary task. Primary task performance was measured by time on target and number of tracking errors, and the secondary task by choice reaction time and percent correct responses. Additionally, workload, as defined by Ogden et al. {1979) and Michon (1966) was evaluated as a function of age and tracking complexity. Results related to tracking performance revealed significant age and tracking complexity main effects, Results also showed that tracking complexity affected choice reaction time and that age affected percent correct responses. Significant tracking complexity and age main effects were revealed for the workload measure in choice reaction time. This suggests that the complexity of the tracking task affected the amount of workload, and that the tracking task imposed a greater workload on the older subjects. The implications of age differences in the amount of workload imposed on the subjects were discussed.
Regulation of Hsp70 function by a eukaryotic DnaJ homolog
Creators: name: Douglas, Michael G
name: Cyr, Douglas M
name: Lu, Xiangyang
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: We report that a purified cytoplasmic Hap70 homolog from Saccharomyces cerevisiae, Hsp70SSA1, exhibits a weak ATPase activity, which is stimulated by a purified eukaryotic dnaJp homolog (YDJ1p). Stable complex formation between Hsp70SSA1and the permanently unfolded protein carboxymethylated α-lactalbumin (CMLA) was assayed by native gel electrophoresis.We report that a purified cytoplasmic Hap70 homolog from Saccharomyces cerevisiae, Hsp70SSA1, exhibits a weak ATPase activity, which is stimulated by a purified eukaryotic dnaJp homolog (YDJ1p). Stable complex formation between Hsp70SSA1and the permanently unfolded protein carboxymethylated α-lactalbumin (CMLA) was assayed by native gel electrophoresis.
The unexpected kinematics of multiple populations in NGC6362: do binaries play a role?
Creators: name: Dalessandro, E.
name: Mucciarelli, A.
name: Bellazzini, M.
name: Sollima, A.
name: Vesperini, E.
name: Hong, J.
name: Hénault-Brunet, V.
name: Ferraro, F. R.
name: Ibata, R.
name: Lanzoni, B.
name: Massari, D.
name: Salaris, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a detailed analysis of the kinematic properties of the multiple populations (MPs) in the low-mass Galactic globular cluster NGC6362 based on a sample of about 500 member stars for which radial velocities (RVs), Fe and Na abundances have been homogeneously derived. At distances from the cluster center larger than about 0.5 $r_h$, we find that first (FG - Na-poor) and second generation (SG - Na-rich) stars show hints of different line-of-sight velocity dispersion profiles, with FG stars being dynamically hotter. This is the first time that differences in the velocity dispersion of MPs are detected by using only RVs. While kinematic differences between MPs in globular clusters are usually described in terms of anisotropy differences driven by the different radial distributions, this explanation seems hardly viable for NGC6362, where SG and FG stars are spatially mixed. We demonstrate that the observed difference in the velocity dispersion profiles can be accounted for by the effect of binary stars. In fact, thanks to our multi-epoch RV measurements we find that the binary fraction is significantly larger in the FG sample (f~14%) than in SG population (f<1%), and we show that such a difference can inflate the velocity dispersion of FG with respect to SG by the observed amount in the relevant radial range. Our results nicely match the predictions of state-of-the art $N$-body simulations of the co-evolution of MPs in globular clusters that include the effect of binaries.
description: 18 pages, 6 figures; Accepted for publication in ApJ
Magic angle effects in a trigonal Mn(III)3 cluster: deconstruction of a single-molecule magnet
Creators: name: Marbey, Jonathan
name: Gan, Pei-Rung
name: Yang, En-Che
name: Hill, Stephen
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present angle-dependent high-frequency EPR studies on a single-crystal of a trigonal Mn3 cluster with an unusual structure in which the local magnetic easy-axes of the constituent Mn(III) ions are tilted significantly away from the molecular C3 axis towards the magic-angle of 54.7 degrees, resulting in an almost complete cancelation of the 2nd-order axial magnetic anisotropy associated with the ferromagnetically coupled total spin ST = 6 ground state. This contrasts the situation in many related Mn3 single-molecule magnets (SMMs) that have been studied intensively in the past, for which the local MnIII anisotropy tensors are reasonably parallel, resulting in substantial barriers to magnetization relaxation (Ueff = 30 to 35 cm 1) and magnetization blocking below about 2.5 K. The suppression of the 2nd-order anisotropy in the present case results in a situation in which the zero-field splitting (ZFS) of the ST = 6 ground state is dominated by 4th- and higher-order interactions. This provides a unique opportunity to study in depth how molecular geometry influences these interactions that are responsible for quantum tunneling of magnetization in high-symmetry SMMs. Angle-dependent EPR measurements provide a full mapping of the molecular magneto-anisotropy. Meanwhile, irreducible tensor operator (ITO) methods are employed in order to obtain analytic expressions that directly relate molecular anisotropy to the microscopic physics, i.e., the ZFS tensors associated with the individual MnIII ions, their orientations, and the exchange coupling between the three spins. We find that the magic-angle tilting leads to a massive compression of the ST = 6 ground state energy level diagram and strong mixing between spin projection states. Although these characteristics are antagonistic to SMM behavior, they provide important insights into the physics of polynuclear molecular nanomagnets.
Atmospheric neutrinos from charm
Creators: name: Pasquali, L.
name: Reno, M. H.
name: Sarcevic, I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using next-to-leading order perturbative QCD, we find that the charm contribution to the atmospheric lepton fluxes dominates over the conventional ones from pi and K decays for energies higher than 10^5 GeV. We also discuss theoretical uncertainties involved in the calculations and compare our results with previous evaluations.
description: 5 pages, 1 figure, submitted to the Proceedings of the International Workshop on Particle Physics and the Early Universe (COSMO-98), ed. David Caldwell, Asilomar, Monterey, California, November 15-20, 1998
Statistical Analysis of Torus and Kink Instabilities in Solar Eruptions
Creators: name: Jing, Ju
name: Liu, Chang
name: Lee, Jeongwoo
name: Ji, Hantao
name: Liu, Nian
name: Xu, Yan
name: Wang, Haimin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A recent laboratory experiment of ideal magnetohydrodynamic (MHD) instabilities reveals four distinct eruption regimes readily distinguished by the torus instability (TI) and helical kink instability (KI) parameters \citep{Myers2015}. To establish its observational counterpart, we collect 38 solar flares (stronger than GOES class M5 in general) that took place within 45$^{\circ}$ of disk center during 2011$-$2017, 26 of which are associated with a halo or partial halo coronal mass ejection (CME) (i.e., ejective events), while the others are CMEless (i.e., confined events). This is a complete sample of solar events satisfying our selection criteria detailed in the paper. For each event, we calculate decay index $n$ of the potential strapping field above the magnetic flux rope (MFR) in and around the flaring magnetic polarity inversion line (a TI parameter), and the unsigned twist number $T_w$ of the non-linear force-free (NLFF) field lines forming the same MFR (a KI parameter). We then construct a $n-T_w$ diagram to investigate how the eruptiveness depends on these parameters. We find: (1) $T_w$ appears to play little role in discriminating between confined and ejective events; (2) the events with $n\gtrsim0.8$ are all ejective and all confined events have $n\lesssim0.8$. However, $n\gtrsim0.8$ is not a necessary condition for eruption, because some events with $n\lesssim0.8$ also erupted. In addition, we investigate the MFR's geometrical parameters, apex height and distance between footpoints, as a possible factor for the eruptiveness. We briefly discuss the difference of the present result for solar eruptions with that of the laboratory result in terms of the role played by magnetic reconnection.
description: 20 pages, 5 figures
Política Institucional de Inovação da UFRRJ
Creators: name: Golo, Patricia
name: Calçada, Luís Américo
name: Cassol, Alessandra
name: Magalhães, Viviane de Souza
name: Oliveira, Leandro Dias de
name: Cid, Yara
Publisher: name: Zenodo
Year: 2024

description: A Política de Inovação da Universidade Federal Rural do Rio de Janeiro (UFRRJ) estabelece diretrizes e medidas de incentivo à pesquisa aplicada à inovação, à extensão tecnológica, à proteção da propriedade intelectual, à negociação e transferência de tecnologias, ao desenvolvimento de ambientes e atividades promotoras do empreendedorismo e dos negócios sociais e cooperados, com vistas à capacitação e à formação profissional e tecnológica e ao alcance da autonomia tecnológica e desenvolvimento dos Arranjos Produtivos, Sociais e Culturais em níveis local, estadual, nacional ou internacional.
Reversible binding of platelet-derived growth factor-AA, -AB, and -BB isoforms to a similar site on the "slow" and "fast" conformations of alpha 2-macroglobulin.
Creators: name: Goodell, A L
name: Lasky, J A
name: Hoffman, M R
name: Bonner, J C
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: The mechanism by which the platelet-derived growth factor (PDGF)-binding protein, alpha 2-macroglobulin (alpha 2M), modulates PDGF bioactivity is unknown, but could involve reversible PDGF-alpha 2M binding. Herein we report that greater than 70% of 125I-PDGF-BB or -AB complexed to alpha 2M was dissociated by SDS-denaturation followed by SDS-polyacrylamide gel electrophoresis, i.e. most of the binding was noncovalent. Reduction of the PDGF.alpha 2M complex following denaturation dissociated the cytokine from alpha 2M by greater than 90%, suggesting covalent disulfide bond formation. Approximately 50% of the growth factor was dissociated by lowering the pH from 7.5 to 4.0. 125I-PDGF-BB bound alpha 2M in a time-dependent manner (t1/2 = approximately 1 h), reaching equilibrium after 4 h. The 125I-PDGF.BB/alpha 2M complex dissociated more slowly (t1/2 = approximately 2.5 h). "Slow" and "fast" alpha 2M bound nearly equal amounts of PDGF-AB or -BB. Trypsin treatment converted PDGF-BB/alpha 2M complex to the fast conformation but did not release bound 125I-PDGF-BB. All PDGF-isoforms (AA, -AB, and -BB) competed for binding with 125I-PDGF-BB binding to slow alpha 2M and fast alpha 2M-methylamine by 65-80%. Other cytokines that bind alpha 2M (transforming growth factor-beta 1 and -beta 2, tumor necrosis factor-alpha, basic fibroblast growth factor, interleukin -1 beta, and -6) did not compete for 125I-PDGF-BB binding slow alpha 2M, but transforming growth factor-beta 1 and basic fibroblast growth factor inhibited 125I-PDGF-BB binding alpha 2M-methylamine by 30-50%. The reversible nature of the PDGF.alpha 2M complex could allow for targeted PDGF release near mesenchymal cells which possess PDGF receptors.
Test MM Type B by DHAI (Project) (2021) | Type-B (ID n° 475)
Creators: name: DHAI, Project
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Astronomy
History of astronomy
DISHAS
Astronomical table

description: This is a type B edition: A type-B edition corresponds to a critical edition of several table witnesses:
 it is based on several different editions, themselves based on tables from different primary sources.
 A type-B edition can be based on type-A, type-B or type-C editions.
You can find it on the DISHAS project website from this link: https://dishas.obspm.fr/table-edition/475
Ultrahigh-precision measurement of the $n=2$ triplet P fine structure of atomic helium using frequency-offset separated oscillatory fields
Creators: name: Kato, K.
name: Skinner, T. D. G.
name: Hessels, E. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: For decades, improved theory and experiment of the $n=2$ $^3$P fine structure of helium have allowed for increasingly-precise tests of quantum electrodynamics, determinations of the fine-structure constant $α$, and limitations on possible beyond-the-Standard-Model physics. Here we use the new frequency-offset separated-oscillatory-fields (FOSOF) technique to measure the $2^3$P$_2\!\!\to\!2^3$P$_1$ interval. Our result of $2\,291\,176\,590(25)$~Hz represents a major step forward in precision for helium fine-structure measurements.
Role of thrombin exosites in inhibition by heparin cofactor II
Creators: name: Church, Frank C
name: Rogers, Susannah J
name: Whinna, Herbert C
name: Pratt, Charlotte W
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: We determined the role of specific thrombin "exosites" in the mechanism of inhibition by the plasma serine proteinase inhibitors heparin cofactor II (HC) and antithrombin (AT) in the absence and presence of a glycosaminoglycan by comparing the inhibition of alpha-thrombin to epsilon- and gamma T-thrombin (produced by partial proteolysis of alpha-thrombin by elastase and trypsin, respectively). All of the thrombin derivatives were inhibited in a similar manner by AT, either in the absence or presence of heparin, which confirmed the integrity of both heparin binding abilities and serpin reactivities of epsilon- and gamma T-thrombin compared to alpha-thrombin. Antithrombin activities of HC in the absence of a glycosaminoglycan with alpha-, epsilon, and gamma T-thrombin were similar with rate constants of 3.5, 2.4, and 1.2 x 10(4) M-1 min-1, respectively. Interestingly, in the presence of glycosaminoglycans the maximal inhibition rate constants by HC with heparin and dermatan sulfate, respectively, were as follows: 30.0 x 10(7) and 60.5 x 10(7) for alpha-thrombin, 14.6 x 10(7) and 24.3 x 10(7) for epsilon-thrombin, and 0.017 x 10(7) and 0.034 x 10(7) M-1 min-1 for gamma T-thrombin. A hirudin carboxyl-terminal peptide, which binds to anion-binding exosite-I of alpha-thrombin, dramatically reduced alpha-thrombin inhibition by HC in the presence of heparin but not in its absence. We analyzed our results in relation to the recently determined x-ray structure of D-Phe-Pro-Arg-chloromethyl ketone-alpha-thrombin (Bode, W., Mayr, I., Baumann, U., Huber, R., Stone, S. R., and Hofsteenge, J. (1989) EMBO J. 8, 3467-3475). Our results suggest that the beta-loop region of anion-binding exosite-I in alpha-thrombin, which is not present in gamma T-thrombin, is essential for the rapid inhibition reaction by HC in the presence of a glycosaminoglycan. Therefore, alpha-thrombin and its derivatives would be recognized and inhibited differently by HC and AT in the presence of a glycosaminoglycan.
Spin trapping evidence for myeloperoxidase-dependent hydroxyl radical formation by human neutrophils and monocytes
Creators: name: Cohen, Myron
name: Pou, Sovitj
name: Rosen, Gerald
name: Ramos, Carroll
name: Britigan, Bradley
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Using the electron spin resonance/spin trapping system, 4-pyridyl 1-oxide N-tert-butylnitrone (4-POBN)/ethanol, hydroxyl radical was detected as the alpha-hydroxyethyl spin trapped adduct of 4-POBN, 4-POBN-CH(CH3)OH, from phorbol 12-myristate 13-acetate-stimulated human neutrophils and monocytes without the addition of supplemental iron. 4-POBN-CH(CH3)OH was stable in the presence of a neutrophil-derived superoxide flux. Hydroxyl radical formation was inhibited by treatment with superoxide dismutase, catalase, and azide. Treatment with a series of transition metal chelators did not appreciably alter 4-POBN-CH(CH3)OH, which suggested that hydroxyl radical generation was mediated by a mechanism independent of the transition metal-catalyzed Haber-Weiss reaction. Kinetic differences between transition metal-dependent and -independent mechanisms of hydroxyl radical generation by stimulated neutrophils were demonstrated by a greater rate of 4-POBN-CH(CH3)-OH accumulation in the presence of supplemental iron. Detection of hydroxyl radical from stimulated monocyte-derived macrophages, which lack myeloperoxidase, required the addition of supplemental iron. The addition of purified myeloperoxidase to an enzymatic superoxide generating system resulted in the detection of hydroxyl radical that was dependent upon the presence of chloride and was inhibited by superoxide dismutase, catalase, and azide. These findings implicated the reaction of hypochlorous acid and superoxide to produce hydroxyl radical. 4-POBN-CH(CH3)OH was not observed upon stimulation of myeloperoxidase-deficient neutrophils, whereas addition of myeloperoxidase to the reaction mixture resulted in the detection of hydroxyl radical. These results support the ability of human neutrophils and monocytes to generate hydroxyl radical through a myeloperoxidase-dependent mechanism.
Peripheral Meson Model of Deep Inelastic Rapidity Gap Events
Creators: name: Lu, Hung-Jung
name: Rivera, Rodrigo
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that a peripheral meson model can explain the large deep inelastic electron-proton scattering rapidity gap events observed at HERA.
description: 12 pages, 2 figures
Structural constraints within a trimeric transcriptional regulatory region. Constitutive and interferon-gamma-inducible expression of the HLA-DRA gene.
Creators: name: Ting, Jenny P
name: Vilen, Barbara J
name: Penta, Joseph F
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Constitutive and inducible transcription of the major histocompatibility class II HLA-DRA gene involves the upstream S element and the conserved X and Y elements. In this report we have addressed the roles of spatial constraints and stereospecific alignment between the upstream S and X elements, and the X and Y elements, in both constitutive and interferon-gamma (gamma-IFN)-induced expression. Analysis of the constitutive expression in B cell lines (B-LCL) has previously shown that the X and Y elements must be stereoaligned. Further study reveals that any spacing changes between S and X, regardless of the helical alignment of these two elements, is not tolerated. These same restraints are involved in an inducible system, because the response to gamma-IFN treatment requires both stereo alignment between the X and Y elements and precise spacing between the S and X elements. Neither constitutive nor inducible expression can be restored by correcting the distance and spacing between only the S and Y elements with misalignment of X. These results reveal a common pathway for constitutive and inducible expression that may require either direct or indirect protein complex formation among proteins bound to three highly conserved regulatory elements. We have also evaluated the role of the A/T-rich sequence located immediately 5' of the Y element and show that it exerts little effect on constitutive and gamma-IFN induced DRA expression.
Substitution of lysine 213 with arginine in penicillin-binding protein 5 of Escherichia coli abolishes D-alanine carboxypeptidase activity without affecting penicillin binding
Creators: name: Malhotra, K T
name: Nicholas, R A
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: All penicillin-binding proteins (PBPs) contain a conserved box of homology in the carboxyl-terminal half of their primary sequence that can be Lys-Thr-Gly, Lys-Ser-Gly, or His-Thr-Gly. Site-saturation mutagenesis was used to address the role of the lysine residue at this position (Lys213) in Escherichia coli PBP 5, a D-alanine carboxypeptidase enzyme. A soluble form of PBP 5 was used to replace Lys213 with 18 other amino acids, and the ability of these mutant proteins to bind [3H]penicillin G was assessed. Only the substitution of lysine with arginine resulted in a protein that was capable of forming a stable covalent complex with antibiotic. The affinity of [14C]penicillin G for the arginine mutant was 1.2-fold higher than for wild-type PBP 5 (4.4 versus 5.1 micrograms/ml for 20 min at 30 degrees C), and both proteins showed identical rates of hydrolysis of the [14C]penicilloyl-bound complex (t1/2 = 9.1 min). Surprisingly, the arginine-substituted protein was unable to catalyze D-alanine carboxypeptidase activity in vitro, which suggests that there is a substantial difference in the geometries of the peptide substrate and penicillin G within the active site of PBP 5.
Pheidole dione Wilson, 2003, new status
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole dione

description: Pheidole dione Forel, new status
Pheidole rufipilis var. dione Forel 1913m: 225.
Types Mus. Hist. Nat. Geneve.
Etymology Gr dione, a matronymic name for Aphrodite.
Diagnosis A member of the fallax group, most similar to the species listed in the heading above, distinguished as follows. Major: antennal scapes reaching within 2X their maximum width to occipital corners; rugoreticulum on each side of head forming a band from eye laterally to antennal fossa and forward slightly anterior to eye; carinulae on frontal lobes limited to their lateral margins and extending posteriorly to midway between eye and occipital margin; propodeal spines small, equilaterally triangular; pronotal profde in dorsal-oblique view a single convexity, and mesonotal profde subangular; postpetiole from above laterally subangulate; pronotum smooth; pilosity dense and long, many hairs longer than Eye Length.
Minor: pilosity long, some hairs 2X Eye Length; propodeal spines reduced to denticles; mesonotal convexity in dorsal-oblique view subangulate; occiput in frontal view feebly convex.
Measurements (mm) Lectotype major: HW 1.26, HL 1.34, SL 0.94, EL 0.18, PW 0.62.
Paralectotype minor: HW 0.60, HL 0.66, SL 0.84, EL 0.14, PW 0.40.
color Major: body and appendages plain light brown.
Minor: body plain light brown, appendages yellowish brown.
Range Known only from the types.
Biology Unknown.
Figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Jujuy. Scale bars = 1 mm.
description: Published as part of Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA :Harvard University Press on page 286
Effect of limited statistics on higher order cumulants measurement in heavy-ion collision experiments
Creators: name: Pandav, Ashish
name: Mallick, Debasish
name: Mohanty, Bedangadas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have studied the effect of limited statistics of data on measurement of the different order of cumulants of net-proton distribution assuming that the proton and antiproton distributions follow Possionian and Binomial distributions with initial parameters determined from experimental results for two top center of mass energies ($\sqrt{s_{\mathrm{NN}}}=200$ and $62.4$ GeV) in most central ($0-5$%) Au$+$Au collisions at Relativistic Heavy Ion Collider (RHIC). In this simulation, we observe that the central values for higher order cumulants have a strong dependence on event sample size and due to statistical randomness the central values of higher order cumulants could become negative. We also present a study on the determination of the statistical error on cumulants using delta theorem, bootstrap and sub-group methods and verified their suitability by employing a Monte Carlo procedure. Based on our study we find that the bootstrap method provides a robust way for statistical error estimation on high order cumulants. We also present the exclusion limits on the minimum event statistics needed for determination of cumulants if the signal strength (phase transition or critical point) is at a level of $5$% and $10$% above the statistical level. This study will help the experiments to arrive at the minimum required event statistics and choice of proper method for statistical error estimation for high order cumulant measurements.
description: 14 pages, 16 figures