cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The umbra-penumbra area ratio of sunspots during the Maunder Minimum
Creators: name: Carrasco, V. M. S.
name: García-Romero, J. M.
name: Vaquero, J. M.
name: Rodríguez, P. G.
name: Foukal, P.
name: Gallego, M. C.
name: Lefèvre, L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Maunder Minimum (MM) was a prolonged period of low solar activity that occurred between 1645 and 1715. The true level of solar activity corresponding to this epoch is still a matter of debate. In order to compare solar activity during the MM with that of other epochs, we have evaluated the umbra-penumbra area ratio (U/P hereafter) during the MM. Thus, we have analyzed 196 sunspot drawings including 48 different sunspots observed during the period 1660-1709. The mode value of the ratio obtained from the occurrence frequency distribution lies between 0.15 and 0.25. Furthermore, the median and mean values are equal to 0.24 \pm 0.07 and 0.27 \pm 0.08 with a sigma clipping, respectively. These results are consistent with recent research using more modern data. Higher U/P values mean faster sunspot decay rates. From our results, the almost absence of sunspots during the Maunder Minimum could not be explained by changes in the U/P since the values of the ratio obtained in this work are similar to values found for other epochs.
description: 23 pages, 9 figures, accepted for publication in Astrophysical Journal
Pheidole obnixa
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole obnixa

description: Pheidole obnixa Forel
Pheidole arciruga r. obnixa Forel 1913m: 231. Raised to species level by Santschi 1925e: 157. Types Mus. Hist. Nat. Geneve.
Etymology L obnixa, steadfast, resolute, allusion unknown.
diagnosis Similar to aberrans, cavifrons, and longior, distinguished as follows.
Major: head comparatively short (Head Length/Head Width 1.2 mm, the same as aberrans, much shorter than cavifrons and longior)', pronotal dorsum covered by widely spaced longitudinal carinulae, with those near the midline curving outward toward the rear; occiput covered by transverse carinulae; humerus, mesonotal convexity, and propodeal spines well developed; a low lobe present on profile of postpetiolar venter. Minor: pronotum covered by semicircular carinulae.
Measurements (mm) Paralectotype major (Rosario de Santa Fe, Argentina): HW 1.20, HL 1.34, SL 0.50, EL 0.14, PW 0.60. Lectotype minor (Buenos Aires): HW 0.52, HL 0.54, SL 0.40, EL 0.08, PW 0.34. color Major: concolorous light brown.
Minor: mesosomal waist yellowish brown, head and gaster light brown. Range Buenos Aires, Cordoba, and Santa Fe, in Argentina. Biology Unknown.
Figure Upper: paralectotype, major (Rosario de Santa Fe, Argentina; only tentatively associated with lectotype minor). Lower: lectotype, minor (Buenos Aires, Argentina). 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 138
Recovery of beta-adrenergic receptors following long term exposure of astrocytoma cells to catecholamine. Role of protein synthesis.
Creators: name: Perkins, J P
name: Doss, R C
name: Harden, T K
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: As a part of the process of agonist-induced desensitization, 1321N1 human astrocytoma cells lose up to 95% of their beta-adrenergic receptors, as detected by 125I-hydroxybenzylpindolol (125IHYP) binding, after 12-24 h of exposure to isoproterenol. In preconfluent cultures the loss of beta-receptors is completely reversible upon removal of isoproterenol, with receptor levels reaching 100% of control levels within 48-72 h. Addition of cycloheximide (5 micrograms/ml) upon removal of agonist does not prevent the recovery of receptors. After an initial 4-h lag, receptors accumulate in the presence of cycloheximide until the same receptor level is reached that was present at the onset of desensitization. Confluent cultures, which have a reduced number of receptors per cell, recover beta-receptors to only 60 to 70% of control levels following removal of isoproterenol. In addition, cycloheximide blocks the recovery of receptors in these cultures. The effects of cycloheximide on the accumulation of receptors during cell growth suggest that receptors are stable in preconfluent cultures and that turnover only occurs later when cultures are confluent. The data also indicate that long term exposure of cells to catecholamine results in a form of the beta-adrenergic receptor that is undetectable by 125IHYP binding but, nonetheless, retains its primary amino acid structure. The undetectable receptors appear to be retained until agonist is removed, whereupon they become detectable by 125IHYP binding with a t1/2 of about 36 h in the presence of cycloheximide.
Controlled Intracellular Delivery of Single Particles in Single Cells by 3D Hollow Nanoelectrodes
Creators: name: Huang, Jian-An
name: Caprettini, Valeria
name: Zhao, Yingqi
name: Melle, Giovanni
name: Maccaferri, Nicolò
name: Ardini, Matteo
name: Tantussi, Francesco
name: Dipalo, Michele
name: De Angelis, Francesco
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: Biological Physics (physics.bio-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an electrophoretic platform based on 3D hollow nanoelectrodes capable of controlling and quantifying the intracellular delivery of single nanoparticles in single selected cells by surface-enhanced Raman spectroscopy (SERS). The gold-coated hollow nanoelectrode has a sub-femtoliter inner volume that allows the confinement and enhancement of electromagnetic fields upon laser illumination to distinguish the SERS signals of a single nanoparticle flowing through the nanoelectrode. The tight wrapping of cell membranes around the nanoelectrodes enables effective membrane electroporation such that single gold nanorods are delivered into a living cell with a delivery rate subject to the applied bias voltage. The capability of the 3D hollow nanoelectrodes to porate cells and reveal single emitters from the background under live flow is promising for the analysis of both intracellular delivery and sampling.
description: 8 pages and 5 figures
Ferromagnetism in Correlated Electron Systems: Generalization of Nagaoka's Theorem
Creators: name: Kollar, Marcus
name: Strack, Rainer
name: Dieter~Vollhardt
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Nagaoka's theorem on ferromagnetism in the Hubbard model with one electron less than half filling is generalized to the case where all possible nearest-neighbor Coulomb interactions (the density-density interaction $V$, bond-charge interaction $X$, exchange interaction $F$, and hopping of double occupancies $F'$) are included. It is shown that for ferromagnetic exchange coupling ($F>0$) ground states with maximum spin are stable already at finite Hubbard interaction $U>U_c$. For non-bipartite lattices this requires a hopping amplitude $t\leq0$. For vanishing $F$ one obtains $U_c\to\infty$ as in Nagaoka's theorem. This shows that the exchange interaction $F$ is important for stabilizing ferromagnetism at finite $U$. Only in the special case $X=t$ the ferromagnetic state is stable even for $F=0$, provided the lattice allows the hole to move around loops.
description: 13 pages, uuencoded postscript, includes 1 table and 2 figures
Pheidole obscurifrons 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 obscurifrons

description: Pheidole obscurifrons Santschi, new status
Pheidole (Elasmopheidole) aberrans var. obscurifrons Santschi 1925e: 158. Types Naturhist. Mus. Basel.
Etymology L obscurifrons, dark or indistinct brown, allusion unknown.
diagnosis Major: large; yellow; frontal lobes in side view form blunt right angles; in full-face view the mesad anterior border is straight and the lateral anterior border concave, the two coming together as a blunt angle that approaches within an Eye Length of the anterior clypeal border; all of the dorsal surface of the head carinulate except the centers of the clypeus and occiput; upper section of mesopleuron carinulate and foveolate; low, forward-directed process present on postpetiolar venter.
Minor: all of dorsum and sides of head except vertex and frontal triangle carinulate; pronotal dorsum covered by semicircular carinulae; mesopleuron foveolate.
measurements (mm) Lectotype major: HW 1.70, HL 2.00, SL 0.62, EL 0.16, PW 0.90. Paralectotype minor: HW 0.76, HL 0.82, SL 0.62, EL 0.10, PW 0.50. color Major: concolorous reddish brown. Minor: concolorous plain yellow.
Range Recorded from Santa Fe and Cordoba, Argentina (Kempf 1972b). Biology Unknown.
figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Fives Lille, Santa Fe. 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 139
The immobilization of mitochondrial malate dehydrogenase on Sepharose beads and the demonstration of catalytically active subunits
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Porcine heart mitochondrial malate dehydrogenase (L-malate:NAD+ oxidoreductase, EC 1.1.1.37) has been immobilized by covalent attachment to CNBr-activated Sepharose 4B-Cl gel. The gel was activated with low levels of CNBr to produce a low density of linkage sites and, hence, to facilitate linkage of the enzyme through a single subunit. Matrix-bound mitochondrial malate dehydrogenase was found to possess 50-65% of the native mitochondrial malate dehydrogenase specific activity when assayed in the NAD+ leads to NADH direction but only 5-15% of the native enzyme specific activity when assayed in the NADH leads to NAD+ direction. MB-dimeric mitochondrial malate dehydrogenase was dissociated to MB-monomer by exposure to pH 5.0 buffer. The MB-monomer was found to be catalytically active, possessing only a slightly decreased specific activity when compared to MB-dimer. The reconstitution of Mb-monomer to MB-dimer was accomplished by adding dissociated mitochondrial malate dehydrogenase, which exists at pH 5.0, to MB-monomer and adjusting to pH 7.5. The kinetic parameters, pH activity profile, and stability toward heat denaturation for MB-mitochondrial malate dehydrogenase (monomer and dimer) were determined and compared to native mitochondrial malate dehydrogenase. MB-mitochondrial malate dehydrogenase exhibited enhanced stability and similar pH activity profiles when compared to native mitochondrial malate dehydrogenase. Immobilization of mitochondrial malate dehydrogenase altered the enzyme's kinetic parameters in such a manner as to increase the values of Km for the substrates and decrease the values of Vmax.
Pheidole subaberrans
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole subaberrans

description: Pheidole subaberrans (Kusnezov)
Elasmopheidole subaberrans Kusnezov 1952d: 71. Combination in Pheidole by Kempf 1972b: 184.
Types Inst. Miguel Lillo, Tucuman; Mus. Comp. Zool. Harvard.
etymology L subaberrans, below, i.e., almost aberrans.
diagnosis A member of the aberrans group -actually, an intermediate in habitus between the aberrans and tristis groups -distinguished as follows.
Major: large; head bicolored; occipital carina not present as in other aberrans-gwup species; hypostoma lacking spines; in full-face view, frontal lobes broad, asymmetrical, with pointed anterior borders that just reach the anterior clypeal border; humeri very large, rising 4X higher than the mesonotal convexity in dorsal-oblique view; acute, forward-projecting process on postpetiolar venter, as seen from the side; pronotum partly covered by transverse carinulae.
Minor: low process present on venter of postpetiole, as seen from the side; semicircular carinulae cover the pronotum; propodeal spines thin, needle-like.
Measurements (mm) Lectotype major: HW 1.44, HL 1.76, SL 0.60, EL 0.16, PW 0.86. Paralectotype minor: HW 0.64, HL 0.68, SL 0.54, EL 0.12, PW 0.44.
Color Major: reddish yellow except for frontal lobes and borders of mandibles, which are a sharply contrasting blackish brown. Range Recorded from Tucuman and Salta, Argentina.
Biology Unknown.
Figure Upper: lectotype, major. Lower: paralectotype, minor. 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 140
Amplitudes Involving Massive States Using Pure Spinor Formalism
Creators: name: Chakrabarti, Subhroneel
name: Kashyap, Sitender Pratap
name: Verma, Mritunjay
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Same amplitudes evaluated independently using RNS and pure spinor formalism are expected to agree. While for massless states, this fact has been firmly established, for massive states such an explicit check has been lacking so far. We compute all massless-massless-massive 3-point functions in open supertrings in pure spinor formalism for the first massive states and compare them with the corresponding RNS results. We fix the normalization of the vertex operators of the massive states by comparing same set of 3-point functions for a fixed ordering in the two formalisms. Once fixed, the subsequent 3-point functions for each inequivalent ordering match exactly. This extends the explicit demonstration of equivalence of pure spinor and RNS formalism from massless states to first massive states.
description: 33 pages
Estimation of the particle-antiparticle correlation effect for pion production in heavy ion collisions
Creators: name: Andreev, I. V.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Estimation of the back-to-back pi-pi correlations arising due to evolution of the pionic field in the course of pion production process is given for central heavy nucleus collisions at moderate energies.
description: 6 LaTeX pages + 5 ps figures
Pheidole taurus Emery
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole taurus

description: Pheidole taurus Emery
Pheidole taurus Emery 1906c: 142. Types Mus. Civ. Stor. Nat. Genova.
Etymology Gr taurus, bull, alluding to the horn-like frontal lobes of the major.
Diagnosis The most distinctive member of the aberrans group and one of the most unusual Pheidole species. Major: frontal lobes drawn out into sharp, downward- and inward-curving horn-like extensions that reach beyond the clypeus to overhang the bases of the mandibles; laterally the edges of the frontal lobes extend past the margins of the head; bicolorous (see Color below); carinulae of head confined to a broad band from the level of the frontal triangle to the transverse carina that delimits the beginning of the occiput.
Minor: promesonotal dorsum covered by semicircular carinae; carinulae on head mostly limited to antennal fossae and clypeus. Measurements (mm) Lectotype major: HW 1.08, HL 1.24, SL 0.42, EL 0.10, PW 0.66. Paralectotype minor: HW 0.48, HL 0.56, SL 0.42, EL 0.08, PW 0.34.
color Major: concolorous reddish yellow, including midclypeus, but "horns" (extended frontal lobes), together with the frontal triangle and vertex, are dark brown, forming a "mask" over anterior dorsal surface of the head. Range Buenos Aires and Santa Fe, Argentina (Kempf 1972b). Biology Unknown.
Figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Santa Catalina, Buenos Aires. 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 141
Buoyant Motion of a Turbulent Thermal
Creators: name: Tarshish, Nathaniel
name: Jeevanjee, Nadir
name: Lecoanet, Daniel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: By introducing an equivalence between magnetostatics and the equations governing buoyant motion, we derive analytical expressions for the acceleration of isolated density anomalies, a.k.a. thermals. In particular, we investigate buoyant acceleration, defined as the sum of the Archimedean buoyancy $B$ and an associated perturbation pressure gradient. For the case of a uniform spherical thermal, the anomaly fluid accelerates at $2B/3$, extending the textbook result for the induced mass of a solid sphere to the case of a fluid sphere. For a more general ellipsoidal thermal, we show that the buoyant acceleration is a simple analytical function of the ellipsoid's aspect ratio. The relevance of these idealized uniform-density results to turbulent thermals is explored by analyzing direct numerical simulations of thermals at $\textit{Re}=6300$. We find that our results fully characterize a thermal's initial motion over a distance comparable to its length. Beyond this buoyancy-dominated regime, a thermal develops an ellipsoidal vortex circulation and begins to entrain environmental fluid. Our analytical expressions do not describe the total acceleration of this mature thermal, but still accurately relate the buoyant acceleration to the thermal's mean Archimedean buoyancy and aspect ratio. Thus, our analytical formulae provide a simple and direct means of estimating the buoyant acceleration of turbulent thermals.
Antisymmetry and channel coupling contributions to the absorption for p + alpha/d + 3He
Creators: name: Cooper, S. G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: To understand recently established empirical p + alpha potentials, RGM calculations followed by inversion are made to study contributions of the d + 3He reaction channels and deuteron distortion effects to the p + alpha potential. An equivalent study of the d + 3He potential is also presented. The contributions of exchange non-locality to the absorption are simulated by including an phenomenological imaginary potential in the RGM. These effects alone strongly influence the shape of the imaginary potentials for both p + alpha and d + 3He. The potentials local-equivalent to the fully antisymmetrised-coupled channels calculations have a significant parity-dependence in both real and imaginary components, which for p + alpha is qualitatively similar to that found empirically. The effects on the potentials of the further inclusion of deuteron distortion are also presented. The inclusion of a spin-orbit term in the RGM, adds additional terms to the phase-equivalent potential, most notably the comparatively large imaginary spin-orbit term found empirically.
description: 17 pages, Latex, 8 postscript figs, submitted to Nucl. Phys. A
Additional file 5: of Expansin genes expression in growing ovaries and grains of sunflower are tissue-specific and associate with final grain weight
Creators: name: Castillo, Francisca
name: Canales, Javier
name: Claude, Alejandro
name: Calderini, Daniel
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: Figure S4. Multiple sequence alignment of predicted protein sequences corresponding to plant orthologs of EXPN7 and eight putative sunflower EXPN. Identical amino acids are shown with black backgrounds, and different amino acids are shown without backgrounds. The potential putative catalytic domain (N-terminal) is indicated by a horizontal blue bar and the putative cellulose binding domain (C-terminal) is indicated by a horizontal red bar; both were predicted using ScanProsite. Multiple alignment was done using MegAlign software. (PDF 285 kb)
Do the precise measurements of the Casimir force agree with the expectations?
Creators: name: Svetovoy, V. B.
name: Lokhanin, M. V.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An upper limit on the Casimir force is found using the dielectric functions of perfect crystalline materials which depend only on well defined material constants. The force measured with the atomic force microscope is larger than this limit at small separations between bodies and the discrepancy is significant. The simplest modification of the experiment is proposed allowing to make its results more reliable and answer the question if the discrepancy has any relation with the existence of a new force.
description: 9 pages, LaTeX, 2 Postscript figures
A mutation in the rnh-locus of Escherichia coli affects the structural gene for RNase H. Examination of the mutant and wild type protein.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1982

description: Ribonuclease H (RNase H, EC 3.1.26.4) was purified to homogeneity from Escherichia coli wild type strain KS 351 and the RNase H mutant strain FB 2. The specific activity of the wild type enzyme was 43,200 units/mg, while that of the mutant enzyme was 3,430 units/mg, less than 8% of the wild type activity. Isoelectric focusing also revealed differences in the protein from mutant and wild type. The activity of the wild type enzyme was separated into two peaks with isoelectric points of 9.6 and 9.0. In contrast, the activity of the mutant enzyme focused in a single peak with a pI of 9.4. These results indicate that the mutation in the FB2 strain affects the structural gene for RNase H. The molecular weight of both enzymes was determined by gel filtration as well as NaDodSO4-polyacrylamide gel electrophoresis and found to be identical. Both enzymes are very sensitive to increased temperatures and show indistinguishable rates of inactivation. The basis for the heterogeneity of the isoelectric point and the altered activity of the mutant enzyme is still unknown.
Topological Phase Transition in the $ν=2/3$ Quantum Hall Effect
Creators: name: McDonald, I. A.
name: Haldane, F. D. M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The double layer $ν=2/3$ fractional quantum Hall system is studied using the edge state formalism and finite-size diagonalization subject to periodic boundary conditions. Transitions between three different ground states are observed as the separation as well as the tunneling between the two layers is varied. Experimental consequences are discussed.
description: 11 pages, REVTEX v3.0, 7 figures
Vialactea Visual Analytics tool for Star Formation studies of the Galactic Plane
Creators: name: Vitello, F.
name: Sciacca, E.
name: Becciani, U.
name: Costa, A.
name: Bandieramonte, M.
name: Benedettini, M.
name: Brescia, M.
name: Butora, R.
name: Cavuoti, S.
name: Di Giorgio, A. M.
name: Elia, D.
name: Liu, S. J.
name: Molinari, S.
name: Molinaro, M.
name: Riccio, G.
name: Schisano, E.
name: Smareglia, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a visual analytics tool, based on the VisIVO suite, to exploit a combination of all new-generation surveys of the Galactic Plane to study the star formation process of the Milky Way. The tool has been developed within the VIALACTEA project, founded by the 7th Framework Programme of the European Union, that creates a common forum for the major new-generation surveys of the Milky Way Galactic Plane from the near infrared to the radio, both in thermal continuum and molecular lines. Massive volumes of data are produced by space missions and ground-based facilities and the ability to collect and store them is increasing at a higher pace than the ability to analyze them. This gap leads to new challenges in the analysis pipeline to discover information contained in the data. Visual analytics focuses on handling these massive, heterogeneous, and dynamic volumes of information accessing the data previously processed by data mining algorithms and advanced analysis techniques with highly interactive visual interfaces offering scientists the opportunity for in-depth understanding of massive, noisy, and high-dimensional data.
Pheidole weiseri 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 weiseri

description: Pheidole weiseri Santschi, new status
Pheidole (Elasmopheidole) aberrans st. weiseri Santschi 1923d: 64.
Types Naturhist. Mus. Basel.
Etymology Eponymous.
Diagnosis A member of the aberrans group, closest to minensis and obscurifrons.
Major: light yellow; frontal lobes seen from the side form prominent lobes that only partly overhang the clypeus; seen from above, the lobes are broad, and subangular at their anterior tips, which extend to within an Eye Length of the anterior clypeal border; tips of frontal lobes smooth, which surfaces are succeeded posteriorly by a broad band of carinulae, and this gives way at eye level to a smooth area that extends all the way to the occiput; pronotal profile semicircular; faint carinulae line the lower pronotal margin.
Minor: pronotum covered by semicircular carinulae, and mesopleuron by foveolae and longitudinal carinulae.
Measurements (mm) Lectotype major: HW 1.42, HL 1.64, SL 0.58, EL 0.18, PW 0.84.
Paralectotype minor: HW 0.80, HL 0.80, SL 0.58, EL 0.12, PW 0.48.
Color Major: concolorous light reddish yellow.
Minor: body light brown, appendages brownish yellow.
range Known only from the type locality.
Biology Unknown.
Figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Pucapampa, near Santa Catalina, 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 142
Lieb-Schultz-Mattis type theorems for quantum spin chains without continuous symmetry
Creators: name: Ogata, Yoshiko
name: Tasaki, Hal
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We prove that a quantum spin chain with half-odd-integral spin cannot have a unique ground state with a gap, provided that the interaction is short ranged, translation invariant, and possesses time-reversal symmetry or ${\mathbb Z}_2 \times {\mathbb Z}_2$ symmetry (i.e., the symmetry with respect to the $π$ rotations of spins about the three orthogonal axes). The proof is based on the deep analogy between the matrix product state formulation and the representation of the Cuntz algebra in the von Neumann algebra $π({\mathcal A}_{R})''$ constructed from the ground state restricted to the right half-infinite chain.
Characterization of the DNA polymerases induced by a group of herpes simplex virus type I variants selected for growth in the presence of phosphonoformic acid
Creators: name: Derse, D
name: Cheng, Y
name: Bastow, K F
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1982

description: Five independently derived variants of a herpes simplex virus type I (HSV-1) strain were plaque purified from a virus population passaged in 1 mM phosphonoformic acid (PFA). The DNA polymerase induced by the parent and PFA-resistant viruses were purified and characterized. No differences were observed among the enzymes with respect to their chromatographic properties, specific activities, or polypeptides resolved by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The variant enzymes exhibited levels of PFA resistance which ranged from 15- to 25-fold. Resistance to PFA was always associated with a similar degree of resistance to its congener phosphonoacetic acid, but cross-resistance to beta-phenylphosphonoacetic acid was only seen with two of the five variant enzymes. PFA and pyrophosphate were mutually competitive in PPi exchange reactions, but in DNA synthetic reactions the levels of resistance to PFA and PPi were not equal. The apparent affinities of the enzymes for Mg2+ did parallel their affinities for PFA. Km values of dNTPs were about 2-fold higher than the parent virus enzyme for all of the variant enzymes except one which was 4-fold higher. The processivity of polymerization was apparently unaffected by the enzyme changes related to PFA resistance although one variant enzyme had a lower value. Resistance among the variant enzymes to the triphosphates of 9-(2-hydroxyethoxymethyl)guanine and 2',3'-dideoxyguanosine was directly related to the level of resistance to PFA. The data presented here indicated that (i) PFA resistance may result from several types of active site alterations, since the PFA-resistant enzymes were of three kinetically distinct types. Also, additional enzyme alterations, probably unrelated to PFA resistance, were detected in one enzyme. (ii) PFA and PPi possess some different binding determinants within the active center of herpes simplex virus type I DNA polymerase. (iii) PFA and the triphosphates of 9-(2-hydroxyethoxymethyl)guanine and 2',3'-dideoxyguanosine may have a common ultimate inhibitory mechanism.
Pheidole bureni 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 bureni

description: Pheidole bureni new species
types Florida State Collection of Arthropods; Mus. Comp. Zool. Harvard.
etymology Named after the collector, the late American myrmecologist William F. Buren.
Diagnosis A member of the crassicornis group distinguished by the following combination of traits.
Major: scape flattened at base; head in side view narrowed, its posterior dorsal surface flat; in full-face view, occipital border deeply concave and occipital lobes subangulate; propodeal spines long and vertical to propodeal dorsal face; pronotum transversely carinulate; mesosoma and waist completely foveolate and opaque; pilosity very sparse.
Minor: all of body foveolate and opaque except gaster, which is smooth and shiny; carinulae mesad to eyes extend to occiput. measurements (mm) Holotype major: HW 1.50, HL 1.58, SL 0.80, EL 0.24, PW 0.76. Paratype minor: HW 0.72, HL 0.80, SL 0.80, EL 0.20, PW 0.48.
Color Major: bicolorous, with all of body reddish yellow except gaster, which is medium to dark reddish brown. Range Known only from the type locality. Biology Unknown.
Figure Upper: holotype, major. Lower: paratype minor. TEXAS: Alice, Jim Wells Co., southern Texas (William F. Buren). 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 150
Lattice Boltzmann model with self-tuning equation of state for coupled thermo-hydrodynamic flows
Creators: name: Huang, Rongzong
name: Wu, Huiying
name: Adams, Nikolaus A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A novel lattice Boltzmann (LB) model with self-tuning equation of state (EOS) is developed in this work for simulating coupled thermo-hydrodynamic flows. The velocity field is solved by the recently developed multiple-relaxation-time (MRT) LB equation for density distribution function (DF), by which a self-tuning EOS can be recovered. As to the temperature field, a novel MRT LB equation for total energy DF is directly developed at the discrete level. By introducing a density-DF-related term into this LB equation and devising the equilibrium moment function for total energy DF, the viscous dissipation and compression work are consistently considered, and by modifying the collision matrix, the targeted energy conservation equation is recovered without deviation term. The full coupling of thermo-hydrodynamic effects is achieved via the self-tuning EOS and the viscous dissipation and compression work. The present LB model is developed on the basis of the standard lattice, and various EOSs can be adopted in real applications. Moreover, both the Prandtl number and specific heat ratio can be arbitrarily adjusted. Furthermore, boundary condition treatment is also proposed on the basis of the judicious decomposition of DF into its equilibrium, force (source), and nonequilibrium parts. The local conservation of mass, momentum, and energy can be strictly satisfied at the boundary node. Numerical simulations of thermal Poiseuille and Couette flows are carried out with three different EOSs, and the numerical results are in good agreement with the analytical solutions. Then, natural convection in a square cavity with a large temperature difference is simulated for the Rayleigh number from $10^3$ up to $10^8$. Good agreement between the present and previous numerical results is observed, which further validates the present LB model for coupled thermo-hydrodynamic flows.
Analysis of the pp-->pp, pid-->pid, and pid-->pp Scattering Data
Creators: name: Arndt, Richard
name: Oh, Chang-Heon
name: Strakovsky, Igor
name: Workman, Ron
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A combined analysis of the main reactions of the two-baryon system (pp-->pp, pid-->pid, and pid-->pp) over the sqrt{s} interval from pion threshold to 2.4 GeV has been completed. The overall phase in pid-->pp has now been determined. The combined analysis has resulted in an improved fit to the pid elastic and pid-->pp databases.
description: 3 pages of text and 3 postscript figures. Invited talk at the 7th Int. Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, Vancouver, BC, Canada, July 28 - Aug 1, 1997
Phonon Collapse and Second-Order Phase Transition in Thermoelectric SnSe
Creators: name: Aseginolaza, Unai
name: Bianco, Raffaello
name: Monacelli, Lorenzo
name: Paulatto, Lorenzo
name: Calandra, Matteo
name: Mauri, Francesco
name: Bergara, Aitor
name: Errea, Ion
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Since 2014 the layered semiconductor SnSe in the high-temperature Cmcm phase is known to be the most efficient thermoelectric material. Making use of first-principles calculations we show that its vibrational and thermal transport properties are determined by huge non-perturbative anharmonic effects. We show that the transition from the Cmcm phase to the low-symmetry Pnma is a second-order phase transition driven by the collapse of a zone border phonon, whose frequency vanishes at the transition temperature. Our calculations show that the spectral function of the in-plane vibrational modes are strongly anomalous with shoulders and double-peak structures. We calculate the lattice thermal conductivity obtaining good agreement with experiments only when non-perturbative anharmonic scattering is included. Our results suggest that the good thermoelectric efficiency of SnSe is strongly affected by the non-perturbative anharmonicity. We expect similar effects to occur in other thermoelectric materials.
description: 6 pages, 5 figures
Human migration patterns in large scale spatial with the resume data
Creators: name: Nie, Qi
name: Wu, Jian-Jun
name: Yan, Xiao-Yong
name: Liu, Jin-Hu
name: Wang, Jun
Publisher: name: arXiv
Year: 2018
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Researches on the human mobility have made great progress in many aspects, but the long-term and long-distance migration behavior is lack of in-depth and extensive research because of the difficult in accessing to household data. In this paper, we use the resume data to discover the human migration behavior on the large scale scope. It is found that the asymmetry in the flow structure which reflects the influence of population competition is caused by the difference of attractiveness among cities. This flow structure can be approximately described by the gravity model of spatial economics. Besides, the value of scaling exponent of distance function in the gravity model is less than the value of short-term travel behavior. It means that, compared with the short-term travel behavior, the long-term human migration behavior is less sensitive. Moreover, the scaling coefficients of each variable in the gravity model are investigated. The result shows that the economic level is a mainly factor on the migration.
Additional file 4: of Expansin genes expression in growing ovaries and grains of sunflower are tissue-specific and associate with final grain weight
Creators: name: Castillo, Francisca
name: Canales, Javier
name: Claude, Alejandro
name: Calderini, Daniel
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Table S1. Characteristics of putative sunflower EXPN. Accession name, chromosome localization, nucleotide and peptide sequence length, Blast2GO, orthologs, and % identity. Data is from the sunflower genome database (Heliagene portal). (PDF 106 kb)
Next-to-Leading Order Cross Sections for Tagged Reactions
Creators: name: Laenen, Eric
name: Keller, Stephane
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the phase space slicing method of Giele, Glover and Kosower for performing next-to-leading order jet cross section calculations in two important ways: we show how to include fragmentation functions and how to include massive particles. These extensions allow the application of this method to not just jet cross sections but also to cross sections in which a particular final state particle, including a $D$ or $B$-meson, is tagged.
description: 36 pages, Latex Small corrections to text. To appear in Phys. Rev. D
Permeability of canine cardiac sarcoplasmic reticulum vesicles to K+, Na+, H+, and Cl-.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1982

description: Cardiac muscle sarcoplasmic reticulum appears to contain channel-like structures that render the membrane permeable to small univalent ions. Canine heart microsomes fractionated according to buoyant density were examined by Millipore filtration, light scattering, and membrane potential m easurements. Enzymatic analysis and measurement of D-glucose permeation and Na/Ca exchange systems indicated two membrane fractions suitable for the permeability studies, one enriched in surface membranes with a buoyant density of 1.04-1.11 (10-25% sucrose) and one enriched in sarcoplasmic reticulum with a buoyant density of 1.13-1.15 (30-34% sucrose). Surface membrane vesicles impermeable to [3H]sucrose were largely impermeable to K+, Na+, and Cl-, while sarcoplasmic reticulum vesicles impermeable to [3H]sucrose were readily permeable to K+, Na+, H+, and Cl-. Sarcoplasmic reticulum vesicles were essentially impermeable to Ca2+, Mg2+, choline+, gluconate-, 1,4-piperazinediethanesulfonic acid (Pipes-), and D-glucose. These results suggest that cardiac muscle sarcoplasmic reticulum contains structures that facilitate the movement of small univalent ions. A possible function of these putative ion-conducting structures may be to allow rapid ion fluxes to counter electrogenic Ca2+ fluxes across sarcoplasmic reticulum during cardiac muscle contraction and relaxation.
Pheidole coracina 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 coracina

description: Pheidole coracina new species
Types Mus. Comp. Zool. Harvard.
Etymology L coracina, raven-like, alluding to color of the minor worker.
Diagnosis A member of the crassicornis group characterized in the major by dense rugoreticula that stretch from each eye to the adjacent antennal fossa; bilobed dorsal-oblique profile of the pronotum; oval postpetiole from above; most of the prothorax and all of the mesothorax, propodeum, and waist foveolate and opaque; and a contrasting circular brown spot on the vertex.
Minor: blackish brown; pronotal profile bilobed in dorsal-oblique view; and all of body foveolate and opaque except venter of head, median half of the dorsal surface of the head, part of the promesonotum, and the gaster.
Measurements (mm) Holotype major: HW 1.20, HL 1.24, SL 0.68, EL 0.18, PW 0.60.
Paratype minor: HW 0.60, HL 0.66, SL 0.70, EL 0.14, PW 0.40.
Color Major: body light reddish brown except for gaster, which is plain medium brown, and a dark brown circular spot on the vertex.
Minor: concolorous blackish brown. Range Known only from the type series. Biology Unknown.
Figure Upper: holotype, major. Lower: paratype, minor. MEXICO: 19 km north of Estado Guanajuato, San Luis Potosi (William P. MacKay). 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 151
High-Pressure Phase Diagram of NdFeAsO$_{0.9}$F$_{0.1}$: Disappearance of superconductivity on the verge of ferromagnetism from nd moments
Creators: name: Abdel-Hafiez, Mahmoud
name: Mito, M.
name: Shibayama, K.
name: Takagi, S.
name: Ishizuka, M.
name: Vasiliev, A. N.
name: Krellner, C.
name: Mao, H. K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigated transport and magnetic properties of NdFeAsO$_{0.9}$F$_{0.1}$ single crystal under hydrostatic pressures up to 50\,GPa. The ambient pressure superconductivity at $T_{c} \sim$ 45.4\,K is fully suppressed at $P_{c} \sim$ 21 GPa. Upon further increase of the pressure, the ferromagnetism associated with the order of rare-earth subsystem is induced at the border of superconductivity. Our finding is supported by the hysteresis in the magnetization $M$($H$) loops and the strong increase in the field cooled data, $M$($T$), toward low temperatures. We also show that the temperature evolution of the electrical resistivity as a function of pressure is consistent with a crossover from a Fermi-liquid to non-Fermi-liquid to Fermi-liquid. These results give access to the high-pressure side of the superconducting phase diagram in 1111 type of materials.
description: 6 pages, 4 figures
Black Brane Solution in Rastall AdS Massive Gravity and Viscosity Bound
Creators: name: Sadeghi, Mehdi
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we introduced the black brane solution in Rastall theory and in the context of massive gravity. The ratio of shear viscosity to entropy density is calculated for this solution. Our result shows that the KSS bound violates for this theory.
description: Accepted in Modern Physics Letters A
Additional file 1: of Long-read sequencing uncovers a complex transcriptome topology in varicella zoster virus
Creators: name: Prazsák, István
name: Moldován, Norbert
name: Balázs, Zsolt
name: Tombácz, Dóra
name: Megyeri, Klára
name: Szűcs, Attila
name: Csabai, Zsolt
name: Boldogkői, Zsolt
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Plant Biology

description: The procedure of finding novel transcriptional isoforms. The flowchart describes the pipeline used to detect novel TSSs and TES-s. (PDF 505 kb)
Pheidole crassicornis Emery
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole crassicornis

description: Pheidole crassicornis Emery
Pheidole crassicornis Emery 1895d: 296.
Types Mus. Civ. Stor. Nat. Genova; possibly also Mus. Comp. Zool. Harvard (see Figure caption above). Etymology L crassicornis, thick horn, referring to the expanded basal part of the antennal scape. diagnosis a member of the crassicornis group distinguished by the following combination of traits.
Major: thickened basal portion of scape strongly curved toward the insertion, as illustrated; pilosity very sparse, usually almost absent from the head and gaster; humerus subangulate in dorsal-oblique view; pronotal dorsum marginally carinulate. Minor: all of dorsal surface of head except middle of clypeus and frontal triangle, as well as all of mesosoma and waist, foveolate and opaque.
See also diversipilosa, porcula, subporcula, tetra, and vallicola.
Measurements (mm) Major (Belmont, North Carolina): HW 1.30, HL 1.30, SL 0.78, EL 0.20, PW 0.64. Minor (Belmont, North Carolina): HW 0.62, HL 0.74, SL 0.84, EL 0.10, PW 0.44. color Major: concolorous brownish yellow. Minor: concolorous yellowish brown.
Range North Carolina to northern Florida and west to western Texas.
Biology In northern Florida, Naves (1985) found the species sympatric with diversipilosa, nesting in deep soil in forest clearings. The inconspicuous nest openings were never surrounded by craters of excavated soil of the kind common in other soil-dwelling species of Pheidole, and the vertical galleries ran at least 60 cm deep. Minors and occasionally majors foraged 4 meters or more from the nest entrances, and minors were observed retrieving live termites and small dead arthropods. In western Texas, Moody and Francke (1982) found colonies at 100-1700 m, nesting under stones and in open soil.
Figure Upper: major. Lower: minor. NORTH CAROLINA: Belmont, Gaston Co., near Charlotte. (Labeled to species by Carlos Emery and likely part of his type series; the type locality is Charlotte.) 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 152