cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Immunological characterization of the complex forms of chloroplast translational initiation factor 2 from Euglena gracilis
Creators: name: Ma, L
name: Spremulli, L L
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Euglena gracilis chloroplast translational initiation factor 2 (IF-2chl) occurs in several complex forms ranging in molecular mass from 200 to 800 kDa. Subunits of 97 to 200 kDa have been observed in these preparations. Two monoclonal antibodies were prepared against the 97-kDa subunits of IF-2chl. Both of these antibodies recognize all of the higher molecular mass forms of this factor, suggesting that these subunits are closely related. Gel filtration chromatography indicates that the higher molecular mass subunits of IF-2chl are present in the higher molecular mass complexes, whereas the smaller subunits are present in the 200-400 kDa forms of IF-2chl. Probing extracts of light-induced and dark-grown cells with the antibodies indicates that the light induction of this chloroplast factor results from the synthesis of new polypeptide rather than from the activation of an inactive precursor form of the protein. Both the higher and lower molecular mass subunits of IF-2chl are present in 30 S initiation complexes as indicated by Western analysis. The binding of IF-2chl to chloroplast 30 S ribosomal subunits requires the presence of GTP, but does not require fMet-tRNA, messenger RNA, or other initiation factors. Neither polyclonal nor monoclonal antibodies against E. gracilis IF-2chl cross-react with Escherichia coli IF-2 or with animal mitochondrial IF-2
Individual molecular species of phosphatidylcholine and phosphatidylethanolamine in myelin turn over at different rates
Creators: name: Ousley, Andrea H
name: Morell, P
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Phosphatidylcholine (PC) and phosphatidylethanolamine (PE) of the myelin membrane exhibit heterogeneity with respect to metabolic turnover rate (Miller, S. L., Benjamins, J. A., and Morell, P. (1977) J. Biol. Chem. 212, 4021-4037). To test the hypothesis that this is due to differential turnover of individual molecular species (which differ in acyl chain composition), we have examined the relative turnover of individual molecular species of myelin PC and PE. Phospholipids were labeled by injection of [2-3H]glycerol into the brains of young rats.Phosphatidylcholine (PC) and phosphatidylethanolamine (PE) of the myelin membrane exhibit heterogeneity with respect to metabolic turnover rate (Miller, S. L., Benjamins, J. A., and Morell, P. (1977) J. Biol. Chem. 212, 4021-4037). To test the hypothesis that this is due to differential turnover of individual molecular species (which differ in acyl chain composition), we have examined the relative turnover of individual molecular species of myelin PC and PE. Phospholipids were labeled by injection of [2-3H]glycerol into the brains of young rats.
Pheidole chiapasana 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 chiapasana

description: Pheidole chiapasana new species
Types Mus. Comp. Zool. Harvard.
Etymology Named after the Mexican state of origin.
Diagnosis A member of the fallax group, similar in various characters to the species listed in the heading above, especially laevivertex and tetroides, and distinguished as follows.
Major: entire head and mesosoma foveolate and opaque; mesosoma and postpetiolar node low; pronotal dorsal profde broken only slightly by a very low convexity; humerus low and rounded; postpetiole roughly diamond-shaped; rugoreticulum of head limited to a band between eye and antennal fossa; occiput weakly concave.
Minor: entire head and mesosoma foveolate and convex; postpetiolar node very low, the entire postpetiole cylindrical in side view; occiput narrowed, its margin flat; propodeal spines directed strongly upwards. Measurements (mm) Holotype major: HW 1.21, HL 1.32, SL 0.82, EL 0.16, PW 0.62. Paratype minor: HW 0.58, HL 0.66, SL 0.70, EL 0.10, PW 0.40. Color Major: body light brown, legs yellowish brown.
Minor: head and mesosoma dark brown, waist and gaster medium brown except for tarsi, which are light brown.
Range Known from the type locality and from Lagos de Montebello, Chiapas, at 1500 m.
biology At Rayon, in leaf litter of montane rainforest, and at Lagos de Montebello, in leaf litter of mixed tropical and temperate mesic forest (P. S. Ward).
Figure Upper: holotype, major. Lower: paratype, minor. MEXICO: 5 km east of Rayon, Chiapas, 1700m, 17Â° 13^ 92Â°58W (Philip S. Ward). 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 273
Time Delay in Electron-C60 Elastic Scattering in a Dirac Bubble Potential Model
Creators: name: Amusia, M. Ya.
name: Baltenkov, A. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Within the framework of a Dirac bubble potential model for the C60 fullerene shell, we calculated the time delay in slow-electron elastic scattering by C60. It appeared that the time of transmission of an electron wave packet through the Dirac bubble potential sphere that simulates a real potential of the C60 cage exceeds by more than an order of magnitude the transmission time via a single atomic core. Resonances in the time delays are due to the temporary trapping of electron into quasi-bound states before it leaves the interaction region.
description: 12 pages, 4 figures
Inhibition of DNA helicase II unwinding and ATPase activities by DNA-interacting ligands : kinetics and specificity
Creators: name: Ghate, S
name: Matson, S W
name: George, J W
name: Besterman, J M
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Although DNA helicases play important roles in the processing of DNA, little is known about the effects of DNA-interacting ligands on these helicases. Therefore, the effects of a wide variety of DNA-binding ligands on the unwinding and ATPase reactions catalyzed by Escherichia coli DMA helicase II were examined. DNA minor groove binders and simple DNA intercalators did not inhibit helicase II. However, DNA intercalators, such as mitoxantrone and nogalamycin, which position functionalities in the major groove upon binding duplex DNA, were potent inhibitors of helicase II.Although DNA helicases play important roles in the processing of DNA, little is known about the effects of DNA-interacting ligands on these helicases. Therefore, the effects of a wide variety of DNA-binding ligands on the unwinding and ATPase reactions catalyzed by Escherichia coli DMA helicase II were examined. DNA minor groove binders and simple DNA intercalators did not inhibit helicase II. However, DNA intercalators, such as mitoxantrone and nogalamycin, which position functionalities in the major groove upon binding duplex DNA, were potent inhibitors of helicase II.
Pheidole chocoensis 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 chocoensis

description: Pheidole chocoensis new species
Types Mus. Comp. Zool. Harvard.
etymology Named after the region of the type locality.
diagnosis A small, yellow member of the fallax group similar to araneoides and wallacei, and easily distinguished as follows. Major: extensive rugoreticulation covers the space between the eye to the frontal carinae and circular carinulae of the antennal fossae; head roughly quadrate, occiput deep; antennal scapes fall short of the occipital lobes by 2X the scapes' maximal width; mesopleuron and dorsal face of propodeum carinulae; pilosity dense and very long.
Minor: neck and nuchal collar well-developed; basal face of propodeum drops vertically in front to metanotum; mesopleuron carinulate.
Measurements (mm) Holotype major: HW 1.18, HL 1.24, SL 1.00, EL 0.20, PW 0.62. Paratype minor: HW 0.46, HL 0.66, SL 0.98, EL 0.14, PW 0.34. Color Major: concolorous medium reddish yellow. Minor: concolorous medium yellow.
Range Known only from the type locality.
Biology The type series was collected from a forested mountain slope. A winged queen was present 1-4 June.
figure Upper: holotype, major. Lower: paratype, minor. COLOMBIA: Finca Los Guaduales, 10 km southwest of Jose del Palmar, Rio Torito, Choco, 760 m (Charles Kugler). 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 274
Coupled-barrier diffusion: the case of oxygen in silicon
Creators: name: Ramamoorthy, Madhavan
name: Pantelides, Sokrates T.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Oxygen migration in silicon corresponds to an apparently simple jump between neighboring bridge sites. Yet, extensive theoretical calculations have so far produced conflicting results and have failed to provide a satisfactory account of the observed $2.5$ eV activation energy. We report a comprehensive set of first-principles calculations that demonstrate that the seemingly simple oxygen jump is actually a complex process involving coupled barriers and can be properly described quantitatively in terms of an energy hypersurface with a ``saddle ridge'' and an activation energy of $\sim 2.5 $ eV. Earlier calculations correspond to different points or lines on this hypersurface.
description: 4 Figures available upon request. Accepted for publication in Phys. Rev. Lett
Interaction of secreted insulin-like growth factor-I (IGF-I) with cell surface receptors is the dominant mechanism of IGF-I's autocrine actions
Creators: name: Dai, Z
name: Van Wyk, J J
name: D'Ercole, A J
name: Stiles, A D
name: Moats-Staats, B
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: In a prior report we presented evidence that insulin-like growth factor-I (IGF-I) can act in an autocrine fashion by demonstrating that FRTL-5 cells transfected with hIGF-IA fusion genes express and secrete biologically active IGF-I that renders the stimulation of DNA synthesis in FRTL-5 cells independent of their requirement for exogenous IGFs or insulin. To determine if IGF-I's autocrine actions require secretion or can be mediated by interactions with intracellular receptors, we have created a new line of FRTL-5 cells that express a mutant IGF-IA precursor containing the endoplasmic reticulum retention amino acid sequence, Lys-Asp-Glu-Leu (KDEL), at its carboxyl terminus. The mutant IGF-IA/KDEL precursor expressed by stably transfected FRTL-5 cells was shown to be retained intracellularly and to have biological activity comparable with mature IGF-I, as judged by the activity of partially purified IGF-IA/KDEL in wild type FRTL-5 cells. Expression of IGF-IA/KDEL in FRTL-5 cells, however, neither augmented TSH-stimulated DNA synthesis nor stimulated IGF-binding protein-5 expression, as does IGF-IA expression in transfected FRTL-5 cells and the addition of exogenous IGF-I to wild type FRTL-5 cells. IGF-IA/KDEL expression, however, desensitized FRTL-5 cells to the actions of exogenous IGF-I despite having only minimal effects on cell surface type I receptor number, suggesting that intracellular IGF-I is capable of significant biological actions. The failure of IGF-IA/KDEL to replicate the actions of secreted IGF-I, taken together with the findings that a monoclonal antibody against IGF-I blocked IGF-I's actions in IGF-I-secreting transfected FRTL-5 cells, provides evidence that IGF-I secretion and interaction with cell surface type I IGF receptors is the dominant mechanism of IGF-I's autocrine actions.
Pheidole cielana 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 cielana

description: Pheidole cielana new species
Types Mus. Comp. Zool. Harvard.
Etymology Named after the type locality.
Diagnosis A member of the fallax group distinguished by the following combination of traits.
Major: medium-sized; reddish brown; median ocellus present; entire body covered by dense, erect to suberect hairs; scape approaches the occipital corner by less than its own width; extensive rugoreticula occur around the eyes and on the frontal lobes; anterior half of pronotal dorsum and all of mesonotal dorsum rugoreticulate.
Minor: all of head, mesosoma, and waist foveolate and opaque, and anterior half of median strip of first gastral tergite shagreened and opaque.
Measurements (mm) Holotype major: HW 1.14, HL 1.22, SL 0.96, EL 0.20, PW 0.60. Paratype minor: HW 0.64, HL 0.74, SL 0.96, EL 0.16, PW 0.44.
color Major: body and most of head medium reddish brown, appendages and sides of head anterior to eye light reddish brown. Minor: overall medium reddish brown, tarsi yellow.
range Known only from the type locality.
Biology Unknown.
Figure Upper: holotype, major. Lower: paratype, minor. MEXICO: Rancho Cielo, 17 km northwest of Gomez Farias, Tamaulipas, 1160 m (Philip S. Ward). 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 275
Pheidole claviscapa
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole claviscapa

description: Pheidole claviscapa Santschi
Pheidole claviscapa Santschi 1925d: 224.
Types Naturhist. Mus. Basel.
Etymology L Gr claviscapa, "club stem," referring to the swollen and somewhat flattened base of the antennal scape.
diagnosis One of the giant Neotropical species, comparable in size to cephalica and fimbriata of the tristis group (q.v.). Major: very large, Head Width about 2.1 mm; antennal scape broadly swollen and flattened at base; space between eye and antennal fossa rugoreticulate; entire median strip of gaster shagreened.
Minor: head in full-face view elliptical in outline, with nuchal crest; entire head, except frontal triangle, and mesosoma and waist foveolate and opaque; anterior half of first gastral tergite shagreened.
Measurements (mm) Major (Anapolis, Brazil): HW 2.10, HL 2.24, SL 1.20, EL 0.26, PW 1.04. Minor (Anapolis, Brazil): HW 0.80, HL 1.04, SL 1.36, EL 0.20, PW 0.62. Color Major and minor: reddish yellow ("orange") or reddish brown.
Range Recorded from Minas Gerais, Goias, Mato Grosso, and Ceara by Kempf (1972b). I have seen in addition a series from Santa Cruz, eastern Bolivia (P. S. Ward).
biology The preferred habitat is evidently cerrado, the tropical savanna of central South America.
Figure Upper: major; the antennal scape viewed edge-on is depicted next to the frontal view of the head;
the upper of the two dorsal-oblique views is of a syntype major. Lower: minor. BRAZIL: Anapolis, Goias (W. Kempf).
Compared with syntypes. (Type locality: Pirapora, Minas Gerais, Brazil.) 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 276
Renormalization of the one-body off-diagonal Coulomb field in nuclei
Creators: name: Auerbach, N.
name: Vorov, O. K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Isospin violation effects in nuclei are investigated within a microscopic approach which takes into account the influence of the residual strong interaction on the Coulomb interaction. The renormalization of the off-diagonal Coulomb field acting within a nucleus, by the residual strong interaction is calculated analytically in a simplified RPA. From the expression for the suppression coefficient of the isospin violating part of the Coulomb field, the isospin violating spreading widths of isobaric analog states are derived. The resulting reduction of the width is in agreement with the data on the isospin symmetry restoration and with some earlier evaluations of the isospin violating spreading widths.
description: 11 pages, Latex
Modifications of bovine prothrombin fragment 1 in the presence and absence of Ca (II) ions. Loss of positive cooperativity in Ca (II) ion binding for the modified proteins.
Creators: name: Hiskey, RG
name: Panek, MG
name: Pedersen, LG
name: Huh, NW
name: Weber, David J
name: Berkowitz, P
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Chemical modification of bovine prothrombin fragment 1 according to the procedure of D. J. Welsch and G. L. Nelsestuen (1988) [Biochemistry 27, 4946-4952 and ealier papers] provided a series of fragment 1 derivatives in which various nitrogen-containing side chains were N-acetylated and/or N-2,4,6-trinitrophenylated. In addition the des-[Ala-1,Asn-2]- and des-[Ala-1,Asn-2,Lys-3]-fragment 1 derivatives were prepared by limited enzymatic hydrolysis of fragment 1 using cathepsin C and plasmin, respectively. Quantitative studies on the Ca(II) binding of these proteins have been accomplished using 45Ca(II) equilibrium dialysis. Binding of these fragment 1 derivatives to phosphatidylserine/phosphatidylcholine (PS/PC) vesicles (25:75) in the presence of Ca(II) ions has been studied using the light-scattering technique. Acylation of the 5 lysine residues of fragment 1 by the action of acetic anhydride (500-fold molar excess) in the presence of 75 mM Ca(II), pH 8.0, results in loss of positive cooperativity in Ca(II) binding (Scatchard plot) and an increase in the number of Ca(II) ions bound. The Ca(II)-dependent PS/PC binding of the acylated protein is reduced. Removal of 2 and 3 residues from the amino terminus likewise leads to loss of positive cooperativity in Ca(II) binding and reduced binding affinity to PS/PC vesicles. The important role of the amino-terminal 1-10 sequence is discussed. We conclude that positive cooperativity in Ca(II) binding is not a prerequisite for the Ca(II)-dependent binding of bovine prothrombin fragment 1 to PS/PC vesicles.
Molecular cloning of rat prostate transglutaminase complementary DNA : the major androgen-regulated protein Dp1 of rat dorsal prostate and coagulating gland
Creators: name: Quarmby, Valerie
name: French, Frank
name: Ho, Kuo
name: Wilson, Elizabeth
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Complementary DNA (cDNA) that codes for a major androgen-dependent secretory protein of rat coagulating gland and dorsal prostate, dorsal protein 1 (DP1), was isolated by molecular cloning. Recombinant DP1 cDNA clones were identified from a bacteriophage lambda gt11 rat coagulating gland expression library using an affinity purified polyclonal antibody. Amino acid sequence deduced from DNA contained sequences identical with several DP1 cyanogen bromide cleavage fragments. Northern blot hybridization of poly(A) RNA isolated from intact rat dorsal prostate and coagulating gland revealed a predominant messenger RNA (mRNA) species of approximately 3200 nucleotides. Tissue-specific expression of DP1 mRNA was indicated by the absence of DP1 mRNA in ventral prostate and other tissues of the rat. Expression of DP1 mRNA was androgen-dependent, decreasing approximately 80% 7 days after castration and increasing rapidly following androgen replacement. Southern blot analysis of restriction enzyme-digested rat DNA indicated that DP1 is encoded by a single gene and that no major genomic rearrangements accounted for its lack of expression in the dorsal prostate-derived rat Dunning tumor. Sequence comparisons revealed that rat prostate DP1 shares sequence identity with Factor XIIIa and tissue transglutaminase, including the active center, GQCWVF, indicating that DP1 is a member of the transglutaminase gene family.
A gauge-mediated supersymmetry breaking model with an extra singlet Higgs field
Creators: name: Han, Tao
name: Marfatia, Danny
name: Zhang, Ren-Jie
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study in some detail the next-to-minimal supersymmetric standard model with gauge mediation of supersymmetry breaking. We find that it is feasible to spontaneously generate values of the Higgs mass parameters $μ$ and $B_μ$ consistent with radiative electroweak symmetry breaking. The model has a phenomenologically viable particle spectrum. Messenger sneutrinos with mass in the range 6 to 25 TeV can serve as cold dark matter. It is also possible to evade the cosmological domain wall problem in this scenario.
description: revised version to appear in PRD
Monoclonal antibodies recognizing protease-generated neoepitopes from cartilage proteoglycan degradation : application to studies of human link protein cleavage by stromelysin
Creators: name: ROUGHLEY, P.
name: MORT, J.
name: WHITE, R.
name: HUGHES, C.
name: CATERSON, B
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Monoclonal antibodies were raised that specifically recognize the NH2-terminal neoepitope sequence present in like protein cleavage products derived from stromelysin-degraded proteoglycan aggregate. Competitive enzyme-linked immunosorbend assay, using synthetic peptides as inhibitors, showed that one of these antibodies (CH-3) required, for antibody recognition, the free NH2-terminal amino acid isoleucine (residue 17 of the intact protein) in the sequence NH2-IQAENG at the stromelysin cleavage site of link protein 3.Monoclonal antibodies were raised that specifically recognize the NH2-terminal neoepitope sequence present in like protein cleavage products derived from stromelysin-degraded proteoglycan aggregate. Competitive enzyme-linked immunosorbend assay, using synthetic peptides as inhibitors, showed that one of these antibodies (CH-3) required, for antibody recognition, the free NH2-terminal amino acid isoleucine (residue 17 of the intact protein) in the sequence NH2-IQAENG at the stromelysin cleavage site of link protein 3.
Relativistic interaction of long-wavelength ultrashort laser pulses with nanowires
Creators: name: Samsonova, Z.
name: Höfer, S.
name: Kaymak, V.
name: Ališauskas, S.
name: Shumakova, V.
name: Pugžlys, A.
name: Baltuška, A.
name: Siefke, T.
name: Kroker, S.
name: Pukhov, A.
name: O.
name: Uschmann, I.
name: Spielmann, C.
name: Kartashov, D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report on experimental results in a new regime of a relativistic light-matter interaction employing mid-infrared (3.9-micrometer wavelength) high-intensity femtosecond laser pulses. In the laser generated plasma, the electrons reach relativistic energies already at rather low intensities due to the fortunate lambda^2-scaling of the kinetic energy with the laser wavelength. The lower intensity suppresses optical field ionization and creation of the pre-plasma at the rising edge of the laser pulse efficiently, enabling an enhanced efficient vacuum heating of the plasma. The lower critical plasma density for long-wavelength radiation can be surmounted by using nanowires instead of flat targets. In our experiments about 80% of the incident laser energy has been absorbed resulting in a long living, keV-temperature, high-charge state plasma with a density of more than three orders of magnitude above the critical value. Our results pave the way to laser-driven experiments on laboratory astrophysics and nuclear physics at a high repetition rate.
Heavy Quark Fragmentation
Creators: name: Norrbin, Emanuel
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I present the main aspects of open charm production in $π^-\p$ collisions in the context of the Lund String Fragmentation Model as implemented in the Monte Carlo program PYTHIA. The emphasis is on the transition from large to small strings and the dependence on model parameters. A modified version is presented and compared with experimental results both on asymmetries, single-charm spectra and correlations.
description: 10 pages, 6 figures, to appear in the proceedings of the Workshop on Heavy Quarks at Fixed Target, editors H.W.K. Cheung and J.N. Butler
Dimensional effects in photoelectron spectra of Ag deposits on GaAs(110) surfaces
Creators: name: Gasparian, V.
name: Louis, E.
name: Vergés, J. A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: It is shown that the peak structure observed in angle-resolved photoelectron spectra of metallic deposits can only be unambiguously associated to single electronic states if the deposit has a two dimensional character (finite along one spatial direction). In one and zero dimensions the density of states shows peaks related to bunches of single electron states (the finer structure associated to the latter may not always be experimentally resolved). The characteristics of the peak structure strongly depend on the band dispersion in the energy region where they appear. Results for the density of states and photoemission yield for Ag crystallites on GaAs(110) are presented and compared with experimental photoelectron spectra.
description: Uuencoded gz-compressed postcript file including text and three figures; Send comments to jav@boston.icmm.csic.es
Fabrication of low-cost, large-area prototype Si(Li) detectors for the GAPS experiment
Creators: name: Perez, Kerstin
name: Aramaki, Tsuguo
name: Hailey, Charles J.
name: Carr, Rachel
name: Erjavec, Tyler
name: Fuke, Hideyuki
name: Garvin, Amani
name: Harper, Cassia
name: Kewley, Glenn
name: Madden, Norman
name: Mechbal, Sarah
name: Rogers, Field
name: Saffold, Nathan
name: Tajiri, Gordon
name: Tokuda, Katsuhiko
name: Williams, Jason
name: Yamada, Minoru
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A Si(Li) detector fabrication procedure has been developed with the aim of satisfying the unique requirements of the GAPS (General Antiparticle Spectrometer) experiment. Si(Li) detectors are particularly well-suited to the GAPS detection scheme, in which several planes of detectors act as the target to slow and capture an incoming antiparticle into an exotic atom, as well as the spectrometer and tracker to measure the resulting decay X-rays and annihilation products. These detectors must provide the absorption depth, energy resolution, tracking efficiency, and active area necessary for this technique, all within the significant temperature, power, and cost constraints of an Antarctic long-duration balloon flight. We report here on the fabrication and performance of prototype 2"-diameter, 1-1.25 mm-thick, single-strip Si(Li) detectors that provide the necessary X-ray energy resolution of $\sim$4 keV for a cost per unit area that is far below that of previously-acquired commercial detectors. This fabrication procedure is currently being optimized for the 4"-diameter, 2.5 mm-thick, multi-strip geometry that will be used for the GAPS flight detectors.
description: Accepted for publication at Nuclear Instrumentation and Methods A, 12 pages, 11 figures
Neutrino Physics
Creators: name: Peccei, R. D.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: These lectures describe some aspects of the physics of massive neutrinos. After a brief introduction of neutrinos in the Standard Model, I discuss possible patterns for their masses. In particular, I show how the presence of a large Majorana mass term for the right-handed neutrinos can engender tiny neutrino masses for the observed neutrinos. If neutrinos have mass, different flavors of neutrinos can oscillate into one another. To analyze this phenomena, I develop the relevant formalism for neutrino oscillations, both in vacuum and in matter. After reviewing the existing (negative) evidence for neutrino masses coming from direct searches, I discuss evidence for, and hints of, neutrino oscillations in the atmosphere, the sun, and at accelerators. Some of the theoretical implications of these results are emphasized. I close these lectures by briefly outlining future experiments which will shed further light on atmospheric, accelerator and solar neutrino oscillations. A pedagogical discussion of Dirac and Majorana masses is contained in an appendix.
description: 45 pages, 12 figures, Latex file, to be published in in The Proceedings of the VIII Escuela Mexicana de Particulas y Campos
Pheidole cockerelli Wheeler
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole cockerelli

description: Pheidole cockerelli Wheeler
Pheidole cockerelli Wheeler 1908h: 464.
Types Mus. Comp. Zool. Harvard.
Etymology Named after the American entomologist and co-collector of the type series T. D. A. Cockerell.
Diagnosis A member of the fallax group distinguished by the following combination of traits.
Major: light reddish brown; a rugoreticulum extends from around the anterior and posterior margins of each eye mesad to the circular carinulae of the antennal fossa; longitudinal carinulae densely covering the frontal lobes extend posteriorly to the occipital border; anterior half of pronotal dorsum and posterior half of the mesonotum transversely carinulate; all of the head, mesosoma, and waist foveolate and opaque to subopaque except the dorsum of the petiole, which, with the gaster, is smooth and shiny. Minor: all of the head and mesosoma foveolate and opaque; dorsum of the waist and all of the gaster smooth and shiny; occiput narrowed, with a thin collar.
Similar to acamata, cielana, and sciara, as well as the other species listed in the heading, differing in many details in the above characters and others as illustrated. Most likely to be confused with sciara, a less common species that occurs through much of the range of cockerelli.
Measurements (mm) Lectotype major: HW 1.38, HL 1.50, SL 1.02, EL 0.24, PW 0.74. Paralectotype minor: HW 0.62, HL 0.78, SL 0.90, EL 0.18, PW 0.44.
Color Major: concolorous light reddish brown, except rear half of gaster, which is a contrasting medium brown. Minor: concolorous yellowish brown.
Range Oklahoma, Colorado, western Texas, New Mexico, Arizona.
Biology In Colorado, Gregg (1963) found cockerelli nesting at 1700-1900 m, under rocks in the clayey soil of short-grass prairie. Creighton (1950a) lists it as a desert ant in Arizona and New Mexico. Stefan Cover (personal communication) found it in the Chiricahua, Huachuca, and Santa Maria Mts. of Arizona at 1460-1740 m nesting in open soil and grass clumps variously in desert grassland, grazed grasslands with scattered oak, and juniper-oak creek-valley woodland. In western Texas, O. F. Francke encountered cockerelli in a nest in the open soil of mesquite-creosote-cactus scrubland (Mus. Comp. Zool. Harvard series). Winged reproductives were present in Arizona nests from late June to mid-July.
Figure Upper: lectotype, major. Lower: paralectotype, minor. NEW MEXICO: Arroyo Pecos, Las Vegas (T. D. A. Cockerell and W. M. Wheeler). 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 277
Warm nuclei: The transition from independent particle motion to collisional dominance
Creators: name: Hofmann, H.
name: Ivanyuk, Fedor A.
name: Magner, Alexander G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study large scale collective dynamics of isoscalar type and examine the influence of interactions residual to independent particle motion. It is argued that for excitations which commonly are present in experimental situations such interactions must not be neglected. They even help to justify better the assumption of locality, both in time as well as in phase space, which is necessary not only for such classic approaches to collective motion as the "cranking model" but also for the more general picture of a transport process. With respect to dissipation, our results are contrasted with those of wall friction.
description: 11 pages, Tex, 5 postscript figures; talk prepared for the XXV Mazurian Lakes School of Physics, Piaski, Poland, September 1997, to be published in Acta Physica Polonica; e-mail: hhofmann@physik.tu-muenchen.de; www home page: http://www.physik.tu-muenchen.de/tumphy/e/T36/hofmann.html
Taking Informed Action on Student Activity in MOOCs
Creators: name: Teusner, Ralf
name: Rollmann, Kai-Adrian
name: Renz, Jan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper presents a novel approach to understand specific student behavior in MOOCs. Instructors currently perceive participants only as one homogeneous group. In order to improve learning outcomes, they encourage students to get active in the discussion forum and remind them of approaching deadlines. While these actions are most likely helpful, their actual impact is often not measured. Additionally, it is uncertain whether such generic approaches sometimes cause the opposite effect, as some participants are bothered with irrelevant information. On the basis of fine granular events emitted by our learning platform, we derive metrics and enable teachers to employ clustering, in order to divide the vast field of participants into meaningful subgroups to be addressed individually.
Platelet-derived growth factor (PDGF) alpha receptor activation modulates the calcium mobilizing activity of the PDGF beta receptor in Balb/c3T3 fibroblasts.
Creators: name: Yu, Chun Li
name: Gordon, Gerald W
name: Earp, Henry Shelton
name: Herman, Brian
name: Diliberto, Pamela A
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: In order to determine whether distinct platelet-derived growth factor (PDGF) receptors (alpha and beta) can modulate the activity of one another, PDGF isoform (AA, BB, and AB)-stimulated changes in Ca2+i were monitored by digitized video microscopy in single cells upon sequential addition of PDGF isoforms. In Balb/c 3T3 fibroblasts, all PDGF isoforms were capable of stimulating increases in Ca2+i of 200-600% above basal levels, although with different potencies: BB greater than or equal to AB greater than AA. All cells were BB-PDGF-responsive, but only 74% of cells examined responded to AA-PDGF. The Ca2+i response elicited by BB-PDGF was inhibited by 60-75% in cells stimulated 10 min earlier with the AA isoform. The half-life of this inhibition was 22 min. In cells in which the alpha receptor was down-regulated by prolonged incubation with AA-PDGF, BB-induced Ca2+i responses were not inhibited. Pretreatment of cells with phorbol ester did not inhibit BB-PDGF-induced increases in Ca2+i, yet down-regulation of PKC activity prevented the AA-PDGF inhibition of BB-PDGF-induced Ca2+i responses. An increase in Ca2+i induced by AlF(4-)-stimulated IP3 generation did not inhibit a subsequent BB-PDGF Ca2+i response; however, attenuation of AA-PDGF-induced extracellular Ca2+ influx with EGTA prevented the inhibition of BB-PDGF-induced Ca2+i increases. Readdition of Ca2+ to the medium after removal of EGTA restored the inhibition of the BB-PDGF Ca2+i response. The inhibition of the BB-PDGF Ca2+i response by AA-PDGF was not caused by inhibition of PDGF receptor tyrosine autophosphorylation, which was unchanged after pretreatment with AA-PDGF. These results demonstrate: (a) that only a subpopulation of cells possess a functional alpha receptor-mediated response as assessed by AA-PDGF-induced increases in Ca2+i, whereas all cells possess the beta receptor-mediated responses; and (b) AA-PDGF and its associated alpha receptor can modulate the activity of the beta receptor through a mechanism that is dependent upon Ca(2+)-influx which may be controlled in part by PKC activation.
Stellar evolution and large extra dimensions
Creators: name: Cassisi, S.
name: Castellani, V.
name: Fiorentini, S. Degl'Innocenti G.
name: Ricci, B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss in detail the information on large extra dimensions which can be derived in the framework of stellar evolution theory and observation. The main effect of large extra dimensions arises from the production of the Kaluza-Klein (KK) excitations of the graviton. The KK-graviton and matter interactions are of gravitational strength, so the KK states never become thermalized and always freely escape. In this paper we first pay attention to the sun. Production of KK gravitons is incompatible with helioseismic constraints unless the 4+n dimensional Planck mass M_s exceeds 300 Gev/c^2. Next we show that stellar structures in their advanced phase of H burning evolution put much more severe constraints, M_s > 3-4 TeV/c^2, improving on current laboratory lower limits.
description: 13 pages RevTeX file, 8 figures ps files
Pheidole confoedusta Wheeler
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole confoedusta

description: Pheidole confoedusta Wheeler
Pheidole confoedusta Wheeler 1909b: 233.
Types Mus. Comp. Zool. Harvard.
Etymology Unknown.
Diagnosis A member of the fallax group, easily distinguished as follows.
Major: antennal scape exceeding occipital corner by about its own maximum width; vertex and genae carinulate, and sides of dorsum of head from level of ventral eye margin to occiput rugoreticulate; head quadrate; antennal scapes expanded near base; petiolar peduncle in side view very thick, its dorsal profile forming a straight line with the node all the way to the apex; parts of pronotal dorsum and mid-clypeus irregularly rugulose; entire head, mesosoma, and waist foveolate and opaque; postpetiole from above diamond-shaped and carinulate. Minor: unknown.
Measurements (mm) Lectotype major: HW 1.30, HL 1.26, SL 1.04, EL 0.24, PW 0.70. Color Major: concolorous light reddish brown.
Range Known only from the type locality.
Biology Unknown.
figure Lectotype, major. MEXICO: Jalapa, Veracruz (f. Silvestri). (Minor unknown.) Scale bar = 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 278
title: ADCO, Cart. 186 (11 H 71), f. 0058r
Creators: name: de la Côte d'Or, Archives départementales
name: CBMA/CG21/F.PETOT/2012
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0058r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Precocious asymptopia for charm from the running BFKL
Creators: name: Nikolaev, N. N.
name: Zoller, V. R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The running BFKL equation gives rise to a series of moving poles in the complex j-plane. Corresponding eigenfunctions (color dipole cross sections) are the oscillating functions of the color dipole size $r$. The first nodes for all sub-leading solutions (color dipole cross sections) accumulate at $r_1\sim 0.1 fm$. Therefore the processes dominated by the dipole sizes $r\sim r_1$ are free of sub-leading BFKL corrections. A practically important example - the leptoproduction of charm. In a wide range of $Q^2$ the calculated $F_2^{cc}(x,Q^2)$ is exhausted by the leading BFKL pole and gives a perfect description of the experimental data.
description: 5 pages, Latex, 5 Figures, PS
Tilt of sunspot bipoles in Solar Cycles 15 to 24
Creators: name: Tlatova, Ksenia
name: Tlatov, Andrey
name: Pevtsov, Alexei
name: Mursula, Kalevi
name: Vasil'eva, Valeria
name: Heikkinen, Elina
name: Bertello, Luca
name: Pevtsov, Alexander
name: Virtanen, Ilpo
name: Karachik, Nina
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use recently digitized sunspot drawings from Mount Wilson Observatory to investigate the latitudinal dependence of tilt angles of active regions and its change with solar cycle. The drawings cover the period from 1917 to present and contain information about polarity and strength of magnetic field in sunspots. We identify clusters of sunspots of same polarity, and used these clusters to form ``bipole pairs''. The orientation of these bipole pairs was used to measure their tilts. We find that the latitudinal profile of tilts does not monotonically increase with latitude as most previous studies assumed, but instead, it shows a clear maximum at about 25--30 degree latitudes. Functional dependence of tilt ($γ$) on latitude ($φ$) was found to be $γ= (0.20\pm 0.08) \sin (2.80 φ) + (-0.00\pm 0.06)$. We also find that latitudinal dependence of tilts varies from one solar cycle to another, but larger tilts do not seem to result in stronger solar cycles. Finally, we find the presence of a systematic offset in tilt of active regions (non-zero tilts at the equator), with odd cycles exhibiting negative offset and even cycles showing the positive offset.
description: 14 pages, 5 figures, accepted for publication in Solar Physics
Pheidole cordiceps Mayr
Creators: name: Wilson, E. O.
Publisher: name: Harvard University Press
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidole
Pheidole cordiceps

description: Pheidole cordiceps Mayr
Pheidole cordiceps Mayr 1868b: 174. Syn.: Pheidole cordiceps var. lilianae Forel 1912g: 232, n. syn.
Types Naturhist. Mus. Wien.
Etymology L cordiceps, heart-shaped head.
Diagnosis A medium-sized, yellow member of the fallax group, distinguished as follows:
Major: head heart-shaped; propodeal spines reduced to denticles; postpetiolar node seen from above roughly trapezoidal; mesonotal convexity prominent, and in dorsal-oblique view seeming to "lean" posteriorly; carinulae on frontal lobes restricted to lateral halves, and rest of cephalic sculpturing confined to the level of the eyes and capsule anterior to them.
Minor: occiput very broad, lacking nuchal collar; humerus angulate; sculpturing on head limited to anterior fourth of dorsal surface. Most similar to and possibly synonymous with dione.
Measurements (mm) Lectotype major: HW 1.44, HL 1.46, SL not measured, EL 0.22, PW 0.72.
Paralectotype minor: HW 0.70, HL 0.74, SL 0.86, EL 0.16, PW 0.42.
Color Major: medium yellow, gaster a slightly contrasting yellowish brown.
Minor: head and mesosoma reddish yellow, waist and gaster medium brown.
Range Argentina: widespread in the country, including Buenos Aires, Chabut, Cordoba, Mendoza, and Salta (Kempf 1972b).
Biology Unknown.
Figure Upper: lectotype, major (antennal scape drawn from an undamaged paralectotype major). Lower: paralectotype, minor. ARGENTINA: Buenos Aires (P. de Strobel). 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 279
Solving PDEs of fractional order using the unified transform method
Creators: name: Fernandez, Arran
name: Baleanu, Dumitru
name: Fokas, Athanassios S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 35R11, 35A22

description: We consider the unified transform method, also known as the Fokas method, for solving partial differential equations. We adapt and modify the methodology, incorporating new ideas where necessary, in order to apply it to solve a large class of partial differential equations of fractional order. We demonstrate the applicability of the method by implementing it to solve a model fractional problem.
description: 15 pages
Electric Screening Mass of the Gluon with Condensate at Finite Temperature
Creators: name: Schmidt, Ivan
name: Yang, Jian-Jun
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electric screening mass of the gluon at finite temperature is estimated by considering the gluon condensate above the critical temperature. We find that the thermal gluons acquire an electric mass of order T due to the gluon condensate.
description: 9 pages, 2 figures