cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unified model of baryonic matter and dark components
Creators: name: Chimento, Luis
name: Forte, Monica
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate an interacting two-fluid cosmological model and introduce a scalar field representation by means of a linear combination of the individual energy densities. Applying the integrability condition to the scalar field equation we show that this "exotic quintessence" is driven by an exponential potential and the two-fluid mixture can be considered as a model of three components. These components are associated with baryonic matter, dark matter and dark energy respectively. We use the Simon, Verde & Jimenez (2005) determination of the redshift dependence of the Hubble parameter to constrain the current density parameters of this model. With the best fit density parameters we obtain the transition redshift between non accelerated and accelerated regimes z_{acc}=0.66 and the time elapsed since the initial singularity t_0= 19.8 Gyr. We study the perturbation evolution of this model and find that the energy density perturbation decreases with the cosmological time.
description: 8 pages, 6 figures A new section added
Karel Kaplan, Kořeny československé reformy 1968 Die Rumänisierung der Bukowina
Creators: name: Reich, Andreas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 3 (2002)
A model for the motion of a particle in a quantum background
Creators: name: Noui, Karim
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We are studying the dynamics of a one-dimensional field in a non-commutative Euclidean space. The non-commutative space we consider is the one that emerges in the context of three dimensional Euclidean quantum gravity: it is a deformation of the classical Euclidean space and the Planck length plays the role of the deformation parameter. The field is interpreted as a particle which evolves in a quantum background. When the dynamics of the particle is linear, the resulting motion is similar to the standard motion in the classical space. However, non-linear dynamics on the non-commutative space are different from the corresponding non-linear dynamics on the classical space. These discrepencies are interpreted as "quantum gravity" effects. Finally, we propose a background independent description of the propagation of the particle in the quantum geometry.
description: 21 pages
New methods for rapid radiohalogen labelling of organic molecules
Creators: name: Balatoni, Julius Alexander
Publisher: name: University of British Columbia
Year: 2010

description: The aim of this study was to develop new and rapid procedures for the incorporation of short-lived radiobromine and radioiodine isotopes into organic compounds. This was accomplished by the electrophilic cleavage of tin-carbon bonds with BrCl and ICl generated in-situ from bromide and iodide, respectively, in the presence of an oxidizing agent. The vinyl-tin derivatives, [4], [8], [12], [17], [18] and [19], were prepared by treatment of the corresponding acetylenic compounds with tri-n-butyltin hydride, in the presence of a radical initiator catalyst, in 51-98% yield. Each of the vinyl-tin derivatives, except [17], was brominated in high yield (89-100%) with sodium bromide oxidized by Chloramine-T under acidic conditions. Compound [17] was brominated in 13% yield; competing bromination of the A-ring of [17] was responsible for this low yield. The vinyl-tin precursors [4], [8], [17], [18] and [19] were iodinated with sodium iodide in the presence of acidified Chloramine-T in 88-99% yield, except [17], which was iodinated in 1.9% yield because of facile A-ring iodination. Compound [18] was subsequently radio-labelled with ⁸²Br, ¹²³I and ¹³¹I forming [41], [42] and [43], respectively, using the Chloramine-T method. Compound [41] was isolated in 77-81% radiochemical yield using low specific activity NH₄⁸²Br. Compounds [42] and [43] were obtained in 82-90% radiochemical yield, in relatively high specific activity. The major side-product formed during the no-carrier-added radioiodinations was the chlorinated derivative [38]. An alternate procedure, based on N-chlorosuccinimide as the oxidant, was developed which gave [41] and [42] in 85% and 62% (no-carrier-added ¹²³I radiochemical yields, respectively. [See Thesis for Diagram]
Violation of the Wiedemann-Franz Law in a Single-Electron Transistor
Creators: name: Kubala, Björn
name: König, Jürgen
name: Pekola, J. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the influence of Coulomb interaction on the thermoelectric transport coefficients for a metallic single-electron transistor. By performing a perturbation expansion up to second order in the tunnel-barrier conductance, we include sequential and cotunneling processes as well as quantum fluctuations that renormalize the charging energy and the tunnel conductance. We find that Coulomb interaction leads to a strong violation of the Wiedemann-Franz law: the Lorenz ratio becomes gate-voltage dependent for sequential tunneling, and is increased by a factor 9/5 in the cotunneling regime. Finally, we suggest a measurement scheme for an experimental realization.
description: published version, minor changes; 4 pages, 3 figures
Eupolybothrus Verhoeff 1907
Creators: name: Zapparoli, Marzio
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Chilopoda
Lithobiomorpha
Lithobiidae
Eupolybothrus

description: Eupolybothrus Verhoeff, 1907
  Subgenus Eupolybothrus Verhoeff, 1907
description: Published as part of Zapparoli, Marzio, 2009, An annotated catalogue of the epigeic and cave centipedes (Chilopoda) of Sardinia *, pp. 56-168 in Zootaxa 2318 on page 62, DOI: 10.5281/zenodo.192026
Donor-Acceptor reagents derived from 4-chloro-2-trimethylstannyl-1-butene, application to the total syntheses of (±)-\delta]9(12)-capnellene and (±)-pentalenene
Creators: name: Karunaratne, Veranja
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes the preparation of 4-chloro-2-trimethyl-stannyl-1-butene (8̲4̲) and its conversion into a number of structurally interesting and synthetically useful donor-acceptor reagents. Thus, transmetalation of (8̲4̲) with methyllithium produced 4-chloro-2-lithio-1-butene (9̲5̲), which reacted smoothly at -78°C in tetrahydrofuran with aldehydes, ketones and α,β-unsaturated N,N',N'-trimethylcarboxhydrazides to provide the addition products (1̲0̲8̲)-(̲1̲1̲3̲) and (̲1̲2̲8̲)-(̲1̲3̲0̲). When the reaction mixtures were treated with hexamethylphosphoramide and were then allowed to warm to room temperature, the 3-methylenetetrahydro-furan derivatives (̲1̲1̲4̲)-(̲1̲1̲9̲) and the 3-methylenecyclopentanecarboxylic acid derivatives (̲1̲3̲1̲)-(̲1̲3̲3̲) were produced in good yields. Treatment of reagent (̲9̲5̲) with 1 equiv of phenylthiocopper or cuprous cyanide provided solutions of the corresponding cuprate reagents (̲1̲7̲9̲) and (̲1̲8̲0̲). Conjugate addition of the latter species to the cyclic enones (̲1̲8̲1̲)-(̲1̲8̲6̲) afforded very good yields of the ketones (̲1̲8̲7̲)-(̲1̲9̲2̲), which, when treated with potassium hydride in tetrahydrofuran, provided the methylenecyclopentane annulation products (̲1̲̲9̲3̲)-(̲1̲9̲8̲), respectively. This methylenecyclopentane annulation method served as a key process in the total synthesis of two structurally interesting triquinane sesquiterpenoids, (±)-Δ⁹⁽¹²⁾ -capnellene (̲2̲0̲5̲) and (±)-pentalenene (̲2̲5̲1̲). Thus, copper bromide - dimethylsulfide catalyzed addition of the Grignard reagent (̲2̲3̲3̲) to 2-methyl-2-cyclopenten-1-one (̲1̲8̲4̲), followed by intramolecular alkylation of the resultant chloro ketone (̲1̲9̲0̲), gave the annulation product (̲1̲9̲6̲). This material was converted into the enone (̲2̲3̲1̲) , which was subjected to an annulation sequence identical with that used in the conversion of (̲1̲8̲4̲) into (̲1̲9̲6̲). Removal of the carbonyl group from the resultant product (̲2̲3̲2̲) provided (±)-Δ⁹⁽¹²⁾ capnellene (̲2̲0̲5̲). Transformation of the readily available keto acetal (̲2̲8̲̲7̲) into the enone (̲2̲8̲4̲), followed by subjection of the latter substance to the methylenecyclopentane annulation sequence, gave the tetracyclic keto olefin (̲2̲8̲5̲). Treatment of an acetic acid solution of this material with hydrogen in the presence of platinum metal produced a mixture of the epimeric ketones (2̲9̲8̲) and (2̲9̲9̲), which was converted into a mixture of (±)-pentalenene (2̲5̲1̲) and (±)-9-e̲p̲i̲-pentalenene (2̲6̲9̲), respectively. [Formula Omitted]
Sozialistische Helden. Eine Kulturgeschichte von Propagandafiguren in Osteuropa und der DDR.
Creators: name: Behrends, Jan C.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
Identity Signals in Emoji Do not Influence Perception of Factual Truth on Twitter
Creators: name: Robertson, Alexander
name: Magdy, Walid
name: Goldwater, Sharon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Prior work has shown that Twitter users use skin-toned emoji as an act of self-representation to express their racial/ethnic identity. We test whether this signal of identity can influence readers' perceptions about the content of a post containing that signal. In a large scale (n=944) pre-registered controlled experiment, we manipulate the presence of skin-toned emoji and profile photos in a task where readers rate obscure trivia facts (presented as tweets) as true or false. Using a Bayesian statistical analysis, we find that neither emoji nor profile photo has an effect on how readers rate these facts. This result will be of some comfort to anyone concerned about the manipulation of online users through the crafting of fake profiles.
Macroscopic non-equilibrium thermodynamics in dynamic calorimetry
Creators: name: Garden, Jean-Luc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: What is really measured in dynamic calorimetric experiments is still an open question. This paper is devoted to this question, which can be usefully envisaged by means of macroscopic non-equilibrium thermodynamics. From the pioneer work of De Donder on chemical reactions and with other authors along the 20th century, the question is tackled under an historical point of view. A special attention is paid about the notions of frequency dependent complex heat capacity and entropy production due to irreversible processes occurring during an experiment. This phenomenological approach based on thermodynamics, not widely spread in the literature of calorimetry, could open significant perspectives on the study of macro-systems undergoing physico-chemical transformations probed by dynamic calorimetry.
description: review article (21 pages)
Im Wettstreit der Werte. Sorbische Sprache, Kultur und Identität auf dem Weg ins 21. Jahrhundert
Creators: name: Ibler, Reinhard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 4 (2003)
Цифровізація суспільства: сучасні тренди та перспективи розвитку наукових досліджень
Creators: name: Костецький, П. В.
name: Іванцов, С. В.
Publisher: name: Zenodo
Year: 2023
Subjects: суспільство, цифрові технології, Інтернет речей, інновації, трансформації, цифровізація.

description: Сучасні тренди соціально-економічного розвитку свідчать про значне зростання ролі інформаційно-комунікаційних та інноваційних технологій. Зростаючий рівень цифровізації суспільства обумовлює трансформації різних його сфер. Метою статті є виокремлення ключових напрямків цифрових трансформацій суспільства за допомогою інструментарію бібліометричного аналізу. Проведене дослідження засвідчило, що найбільш активними об'єктами вивчення є імплементація цифрових технологій у повсякденне життя та систему освіти, цифрові трансформації різних галузей економіки, сприйняття цифрових трансформацій різними категоріями населення. У той же час, еволюційно наукові дослідження розвивались від вивчення спеціалізованих цифрових технологій в окремих сферах та галузях до їх масштабування на рівні суспільства в цілому.
La flamme d'une chandelle
Creators: name: Marsciani, Francesco
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: M-FIL/05 Filosofia e teoria dei linguaggi

description: Contributo 2 a una riflessione intorno all'idea di "immagine", per la descrizione di fenomeni di significazione.
Giant magnetoresistance and extraordinary magnetoresistance in inhomogeneous semiconducting DyNiBi
Creators: name: Casper, Frederick
name: Felser, Claudia
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The semiconducting half-Heulser compound DyNiBi shows a negative giant magnetoresistance (GMR) below 200 K. Except for a weak deviation, this magnetoresistance scales roughly with the square of the magnetization in the paramagnetic state, and is related to the metal-insulator transition. At low temperature, a positive magnetoresistance is found, which can be suppressed by high fields. The magnitude of the positive magnetoresistance changes slightly with the amount of impurity phase.
description: 3 pages, 3 figures
CP violation in the chargino/neutralino sector of the MSSM
Creators: name: Kalinowski, Jan
name: Rolbiecki, Krzysztof
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The CP-violating effects in the neutralino sector of the MSSM can be observed in event-counting type experiments, i.e. without the need of exploiting variables sensitive to beam or neutralino polarization. On the other hand, such CP-odd effects in the chargino sector can be generated only at the loop level. We contrast the two sectors and present results of full one-loop analysis of the CP-odd asymmetry in the non-diagonal chargino pair production in e+e- collisions.
description: 8 pages, 3 figures, presented at the Epiphany Conference on LHC Physics, 4 - 6 January 2008, Cracow, Poland
Topological Boundary Constraints in Artificial Colloidal Ice
Creators: name: Rodríguez-Gallo, Carolina
name: Ortiz-Ambriz, Antonio
name: Tierno, Pietro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The effect of boundaries and how these can be used to influence the bulk behaviour in geometrically frustrated systems are both long-standing puzzles, often relegated to secondary role. Here we use numerical simulations and "proof of concept" experiments to demonstrate that boundaries can be engineered to control the bulk behavior in a colloidal artificial ice. We show that an antiferromagnetic frontier forces the system to rapidly reach the ground state (GS), as opposed to the commonly implemented open or periodic boundary conditions. We also show that strategically placing defects at the corners generates novel bistable states, or topological strings which result from competing GS regions in the bulk. Our results could be generalized to other frustrated micro and nanostructures where boundary conditions may be engineered with lithographic techniques.
Petr Kozák, Zrod stavovského Hlohovska. Mocenská uskupení ve Slezském pozdním středověku.
Creators: name: Wünsch, Thomas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 3 (2009): Vorträge der Sektion "Osteuropa" auf dem 37. Deutschen Reichshistorikertag
Eupolybothrus (Eupolybothrus) fasciatus
Creators: name: Zapparoli, Marzio
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy

description: 3. Eupolybothrus (Eupolybothrus) fasciatus (Newport, 1845)
 1) Eupolybothrus fasciatus (Newport, 1845): Minelli 1983a: 13.
 2) Eupolybothrus fasciatus (New. 1845) [sic]: Minelli 1983b: 407.
 3) Eupolybothrus fasciatus (Newport, 1845): Foddai et al. 1995: 5.
 4) Eupolybothrus fasciatus (Newport, 1845): Foddai et al. 1996: 360, tab. I. 5) Eupolybothrus fasciatus (Newport, 1845): Zapparoli & Minelli 2005: CD.
description: Published as part of Zapparoli, Marzio, 2009, An annotated catalogue of the epigeic and cave centipedes (Chilopoda) of Sardinia *, pp. 56-168 in Zootaxa 2318 on pages 62-63, DOI: 10.5281/zenodo.192026
Role of defects and disorder in the half-metallic full-Heusler compounds
Creators: name: Galanakis, I.
name: Ozdogan, K.
name: Sasioglu, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Half-metallic ferromagnets and especially the full-Heusler alloys containing Co are at the center of scientific research due to their potential applications in spintronics. For realistic devices it is important to control accurately the creation of defects in these alloys. We review some of our late results on the role of defects and impurities in these compounds. More precisely we present results for the following cases (i) doping and disorder in Co$_2$Cr(Mn)Al(Si) alloys, (ii) half-metallic ferrimagnetism appeared due to the creation of Cr(Mn) antisites in these alloys, (iii) Co-doping in Mn$_2$VAl(Si) alloys leading to half-metallic antiferromagnetism, and finally (iv) the occurrence of vacancies in the full-Heusler alloys containing Co and Mn. These results are susceptible of encouraging further theoretical and experimental research in the properties of these compounds.
description: Chapter intended for a book with contributions of the invited speakers of the International Conference on Nanoscale Magnetism 2007. Revised version contains new figure 3
Statistical performance of support vector machines
Creators: name: Blanchard, Gilles
name: Bousquet, Olivier
name: Massart, Pascal
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G05, 62G20 (Primary)

description: The support vector machine (SVM) algorithm is well known to the computer learning community for its very good practical results. The goal of the present paper is to study this algorithm from a statistical perspective, using tools of concentration theory and empirical processes. Our main result builds on the observation made by other authors that the SVM can be viewed as a statistical regularization procedure. From this point of view, it can also be interpreted as a model selection principle using a penalized criterion. It is then possible to adapt general methods related to model selection in this framework to study two important points: (1) what is the minimum penalty and how does it compare to the penalty actually used in the SVM algorithm; (2) is it possible to obtain ``oracle inequalities'' in that setting, for the specific loss function used in the SVM algorithm? We show that the answer to the latter question is positive and provides relevant insight to the former. Our result shows that it is possible to obtain fast rates of convergence for SVMs.
description: Published in at http://dx.doi.org/10.1214/009053607000000839 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Eupolybothrus (Allopolybothrus) nudicornis Gervais 1837
Creators: name: Zapparoli, Marzio
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy

description: 4. Eupolybothrus (Allopolybothrus) nudicornis (Gervais, 1837)
 1) Lithobius grossipes C. Koch: Fanzago 1881b: 3.
 2) Lithobius impressus C. Koch: A. Costa 1885: 9.
 3) Lithobius impressus F. [sic] Koch: Berlese 1890: 1.
 4) Lithobius (s. s.) impressus C. Koch: Silvestri 1898: 681 [pars].
 5) Polybothrus impressus Koch [sic]: Verhoeff 1925a: 656.
 6) Bothropolys (elongatus ? Newp.): Manfredi 1953: 99.
 7) Bothropolys (Parapolybothrus) elongatus Newp. subsp. sardus Manfredi 1956: 207, figs 4a, 4b. 8) Eupolybothrus elongatus (Newp.): Matic 1967: 78.
 9) Eupolybothrus elongatus (Newp.): Cerruti 1968: 232.
 10) Bothropolys (Parapolybothrus) elongatus sardus Manfr., 1956: Cerruti 1968: 232. 11) Eupolybothrus elongatus (Newport): Puddu & Pirodda 1974: 176.
 12) Bothropolys (Parapolybothrus) elongatus Newp. subsp. sardus Manfredi 1956: Manfredi 1976: 231. 13) Eupolybothrus (Allopolybothrus) elongatus (Newport, 1849): Minelli 1978a: 153. 14) Eupolybothrus impressus (C.L. Koch): Eason 1980: 22.
 15) Bothropolys sp.: De Miranda Restivo 1982: 173.
 16) Eupolybothrus elongatus sardus Manfredi, 1956: Cassola 1982: 670, 695, 708. 17) Eupolybothrus elongatus sardus Manfredi 1956: De Miranda Restivo 1983: 112. 18) Eupolybothrus elongatus New. 1849 [sic]: De Miranda Restivo 1983: 112. 19) Eupolybothrus grossipes Koch 1874 [sic]: De Miranda Restivo 1983: 112. 20) Eupolybothrus nudicornis (Gervais 1873): De Miranda Restivo 1983: 113. 21) Eupolybothrus tridentinus Fanzago 1874 [sic]: De Miranda Restivo 1983: 113. 22) Lithobius impressus Koch 1841: De Miranda Restivo 1983: 115.
 23) Eupolybothrus nudicornis (Gervais, 1837): Minelli 1983a: 12.
 24) Eupolybothrus nudicornis (Gerv. 1837): Minelli 1983b: 407.
 25) Eupolybothrus cfr. nudicornis (Gervais, 1837): Minelli 1985: 36.
 26) Eupolybothrus nudicornis corsicus Leg. e Dub. [sic]: De Miranda Restivo & Guaita 1986: 32.
 27) Eupolybothrus nudicornis (Gervais, 1837): Minelli et al. 1994: 498.
 28) Eupolybothrus (Allopolybothrus) nudicornis (Gervais, 1837): Grafitti & Zapparoli 1995: 123. 29) Eupolybothrus nudicornis (Gervais, 1837): Foddai et al. 1995: 5.
 30) Bothropolys (Parapolybothrus) elongatus Newp. subsp. sardus Manfredi, 1956: Leonardi 1995: 137. 31) Eupolybothrus nudicornis (Gervais, 1837): Foddai et al. 1996: 360, tab. I.
 32) Eupolybothrus nudicornis: Mucedda et al. 2002: 30.
 33) Eupolybothrus nudicornis (Gervais, 1837): Zapparoli & Minelli 2005: CD. 34) Eupolybothrus nudicornis (Gervais, 1837): Grafitti & Merella 2008: 88, 89.
description: Published as part of Zapparoli, Marzio, 2009, An annotated catalogue of the epigeic and cave centipedes (Chilopoda) of Sardinia *, pp. 56-168 in Zootaxa 2318 on pages 63-64, DOI: 10.5281/zenodo.192026
Ordered spin-ice state in the geometrically frustrated metallic-ferromagnet Sm2Mo2O7
Creators: name: Singh, Surjeet
name: Suryanarayanan, R.
name: Tackett, R.
name: Lawes, G.
name: Sood, A. K.
name: Berthet, P.
name: Revcolevschi, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The recent discovery of Spin-ice is a spectacular example of non-coplanar spin arrangements that can arise in the pyrochlore A2B2O7 structure. We present magnetic and thermodynamic studies on the metallic-ferromagnet pyrochlore Sm2Mo2O7. Our studies, carried out on oriented crystals, suggest that the Sm spins have an ordered spin-ice ground state below about T* = 15 K. The temperature- and field-evolution of the ordered spin-ice state are governed by an antiferromagnetic coupling between the Sm and Mo spins. We propose that as a consequence of a robust feature of this coupling, the tetrahedra aligned with the external field adopt a "1-in, 3-out" spin structure as opposed to "3-in, 1-out" in dipolar spin ices, as the field exceeds a critical value.
Lithobius Leach 1814
Creators: name: Zapparoli, Marzio
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Chilopoda
Lithobiomorpha
Lithobiidae
Lithobius

description: Lithobius Leach, 1814
  Subgenus Lithobius Leach, 1814
description: Published as part of Zapparoli, Marzio, 2009, An annotated catalogue of the epigeic and cave centipedes (Chilopoda) of Sardinia *, pp. 56-168 in Zootaxa 2318 on page 66, DOI: 10.5281/zenodo.192026
Observation of Ds1(2536)+ -> D+pi-K+ and angular decomposition of Ds1(2536)+ -> D*+K0S
Creators: name: Belle Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 462/fb of e+e- annihilation data recorded by the Belle detector, we report the first observation of the decay Ds1(2536)+ -> D+pi-K+. The ratio of branching fractions B(Ds1+ -> D+pi-K+)/B(Ds1+ -> D*+K0) is measured to be (3.27+-0.18+-0.37)%. We also study the angular distributions in the Ds1(2536)+ -> D*+K0S decay and measure the ratio of D- and S-wave amplitudes. The S-wave dominates, with a partial width of Gamma_S/Gamma_total=0.72+-0.05+-0.01.
description: Submitted to Phys.Rev.D 16 pages, 6 figures, 3 tables
Canonical representation for electrons and its application to the Hubbard model
Creators: name: Kumar, Brijesh
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A new representation for electrons is introduced, in which the electron operators are written in terms of a spinless fermion and the Pauli operators. This representation is canonical, invertible and constraint-free. Importantly, it simplifies the Hubbard interaction. On a bipartite lattice, the Hubbard model is reduced to a form in which the exchange interaction emerges simply by decoupling the Pauli subsystem from the spinless fermion bath. This exchange correctly reproduces the large $U$ superexchange. Also derived, for $U=\pm\infty$, is the Hamiltonian to study Nagaoka ferromagnetism. In this representation, the infinite-$U$ Hubbard problem becomes elegant and easier to handle. Interestingly, the ferromagnetism in Hubbard model is found to be related to the gauge invariance of the spinless fermions. Generalization of this representation for the multicomponent fermions, a new representation for bosons, the notion of a `soft-core' fermion, and some interesting unitary transformations are introduced and discussed in the appendices.
description: 10+ pages, 3 Figures
The fuzzball proposal for black holes
Creators: name: Skenderis, Kostas
name: Taylor, Marika
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The fuzzball proposal states that associated with a black hole of entropy S there are exp S horizon-free non-singular solutions that asymptotically look like the black hole but generically differ from the black hole up to the horizon scale. These solutions, the fuzzballs, are considered to be the black hole microstates while the original black hole represents the average description of the system. The purpose of this report is to review current evidence for the fuzzball proposal, emphasizing the use of AdS/CFT methods in developing and testing the proposal. In particular, we discuss the status of the proposal for 2 and 3 charge black holes in the D1-D5 system, presenting new derivations and streamlining the discussion of their properties. Results to date support the fuzzball proposal but further progress is likely to require going beyond the supergravity approximation and sharpening the definition of a "stringy fuzzball". We outline how the fuzzball proposal could resolve longstanding issues in black hole physics, such as Hawking radiation and information loss. Our emphasis throughout is on connecting different developments and identifying open problems and directions for future research.
description: 106 pages, invited review for Physics Reports; v2: references and comments added
X-Ray Spectroscopy of SN 1006 with Suzaku
Creators: name: Yamaguchi, Hiroya
name: Koyama, Katsuji
name: Katsuda, Satoru
name: Nakajima, Hiroshi
name: Hughes, John P.
name: Bamba, Aya
name: Hiraga, Junko S.
name: Mori, Koji
name: Ozaki, Masanobu
name: Tsuru, Takeshi Go
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on observations of SN 1006 with the X-ray Imaging Spectrometers (XIS) on board Suzaku. We firmly detected K-shell emission from Fe, for the first time, and find that the Fe ionization state is quite low. The broad band spectrum extracted from the southeast of the remnant is well fitted with a model consisting of three optically thin thermal non-equilibrium ionization plasmas and a power-law component. Two of the thermal models are highly overabundant in heavy elements and, hence, are likely due to ejecta. These components have different ionization parameters: $n_et \sim 1.4\times 10^{10}$ cm$^{-3}$ s and $n_et \sim 7.7\times 10^8$ cm$^{-3}$ s and it is the later one that produces the Fe-K emission. This suggests that Fe has been heated by the reverse shock more recently than the other elements, consistent with a picture where the ejecta are stratified by composition with Fe in the interior. On the other hand, the third thermal component is assumed to be solar abundance, and we associate it with emission from the interstellar medium (ISM). The electron temperature and ionization parameter are $kT_e \sim $0.5 keV and $n_et \sim 5.8\times 10^9$ cm$^{-3}$ s. The electron temperature is lower than that expected from the shock velocity which suggests a lack of collisionless electron heating at the forward shock. The extremely low ionization parameter and extreme non-equilibrium state are due to the low density of the ambient medium.
description: 12 pages, 9 figures (14 figure files), accepted for publication in PASJ
Non-minimally Coupled Quintom Model Inspired by String Theory
Creators: name: Sadeghi, J.
name: Setare, M. R.
name: Banijamali, A.
name: Milani, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we consider a quintom model of dark energy with a single scalar field $T$ given by a Lagrangian which inspired by tachyonic Lagrangian in string theory. We consider non-minimal coupling of tachyon field to the scalar curvature, then we obtain the equation of state (EoS), and the condition required for the model parameters when $ω$ crosses over -1.
description: 8 pages, 2 figures
Johannes Rogalla von Bieberstein, "Jüdischer Bolschewismus". Mythos und Realität.
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
On automorphism groups of some types of generic distributions
Creators: name: Cap, Andreas
name: Neusser, Katharina
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 58A30, 53A40, 53C15 (Primary); 53B15, 53C30, 93B29 (Secondary)

description: To certain types of generic distributions (subbundles in a tangent bundle) one can associate canonical Cartan connections. Many of these constructions fall into the class of parabolic geometries. The aim of this article is to show how strong restrictions on the possibles sizes of automorphism groups of such distributions can be deduced from the existence of canonical Cartan connections. This needs no information on how the Cartan connections are actually constructed and only very basic information on their properties. In particular, we discuss the examples of generic distributions of rank two in dimension five, rank three in dimension six, and rank four in dimension seven.
description: AMSLaTeX, 23 pages
The Accretion Flows and Evolution of Magnetic Cataclysmic Variables
Creators: name: Norton, A. J.
name: Butters, O. W.
name: Parker, T. L.
name: Wynn, G. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used a model of magnetic accretion to investigate the accretion flows of magnetic cataclysmic variables. Numerical simulations demonstrate that four types of flow are possible: discs, streams, rings and propellers. The fundamental observable determining the accretion flow, for a given mass ratio, is the spin-to-orbital period ratio of the system. If IPs are accreting at their equilibrium spin rates, then for a mass ratio of 0.5, those with Pspin/Porb < 0.1 will be disc-like, those with 0.1 < Pspin/Porb < 0.6 will be stream-like, and those with Pspin/Porb ~ 0.6 will be ring-like. The spin to orbital period ratio at which the systems transition between these flow types increases as the mass ratio of the stellar components decreases. For the first time we present evolutionary tracks of mCVs which allow investigation of how their accretion flow changes with time. As systems evolve to shorter orbital periods and smaller mass ratios, in order to maintain spin equilibrium, their spin-to-orbital period ratio will generally increase. As a result, the relative occurrence of ring-like flows will increase, and the occurrence of disc-like flows will decrease, at short orbital periods. The growing number of systems observed at high spin-to-orbital period ratios with orbital periods below 2h, and the observational evidence for ring-like accretion in EX Hya, are fully consistent with this picture.
description: Accepted for publication in ApJ. 6 figures - included here at low resolution
Catalytic synthesis of C$_2$-C$_4$-alkenes from dimethyl ether
Creators: name: Aslanov, Shuxrat Chorievich
name: Buxorov, Abdurazzoq Qobilovich
name: Fayzullayev, Normurot Ibodullaevich
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In the study, the effect of the volumetric velocity of the initial gaseous mixture on the catalytic properties of Zn-Zr-Cu/HSZ/Al$_2$O$_3$ in the conversion of dimethyl ether to olefins was studied. When the volumetric rate is increased by 5 times, the conversion of dimethyl ether decreases from 96.5 to 40.7 %, the total selectivity for C$_2$=-C$_4$=olefins decreases from 59.0 to 75.5 mas.%, at the same time, the yield of the by-products of the reaction - C$_2$ + paraffin is reduced. A decrease in the reaction temperature at the equal conversion of dimethyl ether leads to an increase in selectivity for both ethylene and propylene due to a decrease in the formation of methane and C$_2$+paraffin in the reaction products. Thus, in copper-containing zeolite catalysts, lower olefins than dimethyl ether provide higher conversion of raw material and higher selectivity of olefin formation (up to 90 mas. %.). Also, changing the initial raw material composition and regime parameters allows a significant change in the ratio of olefins to each other.
description: 9 pages, 5 Figures, 11 tables, Published with International Journal of Engineering Trends and Technology (IJETT)
András Vári, Herren und Landwirte. Ungarische Aristokraten und Agrarier auf dem Weg in die Moderne (1821-1910)
Creators: name: Puttkamer, Joachim Von
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 3 (2009): Vorträge der Sektion "Osteuropa" auf dem 37. Deutschen Reichshistorikertag
A study of catalytic autoxidation of organic substrates using H2/O2 mixtures in the presence of rhodium complexes containing dimethylsulfoxide ligands
Creators: name: Gamage, Sujatha Nandani
Publisher: name: University of British Columbia
Year: 2010

description: Dimethylacetamide (DMA) solvent is oxidized catalytically to CH₃CON(CH₃)CH₂OOH and CH₃CON(CH₃)CHO under H₂/0₂ mixtures at 50°C in the presence of the dimethylsulfoxide complex RhCl₃(DMSO)₃ (I) at a rate which is much faster than peroxide-initiated autoxidation of DMA under O₂ alone. The hydroperoxide is thought to be the initial product, and the N-formyl derivative its decomposition product. An accompanying metal-catalyzed hydrogenolysis of 0₂ leads to H₂0₂ and H₂0. Hydrogen peroxide and CH₃CON(CH₃)CH₂OOH are the only products formed in the early stages of the catalytic reaction. The maximum rate of gas uptake in this initial region is independent of the partial pressure of 0₂, but shows linear dependences on Rh and H₂. Stoichiometry, rate and spectral data are consistent with an initiation reaction between complex I and H₂, and then 0₂ to give a catalytically active RhIII (0₂=) (DMA) species (II) (eq. 1) [formula omitted] The autoxidation of DMA and the hydrogenolysis of 0₂ are postulated to occur via independent pathways involving II (eqs. 2 and 3). [formula omitted] In the absence of H2, II degenerates to catalytically inactive species. The role of H₂ in the DMA autoxidation is thought to be the regeneration of Rh I species and hence II, from deactivated forms of II. Eventual slow, irreversible deactivation of the catalyst and the probable participation of the H₂0₂ product in peroxide initiated free-radical autoxidations complicate the interpretation of later stages of reaction. Diphenylsulfide (DPS) is catalytically oxidized to the sulfoxide by complex I under H₂/O₂ in DMA at 50°C, but accompanying oxidation of the solvent persists even in the presence of a 100-fold excess of DPS over Rh. Oxidation of the sulfide is thought to involve H₂0₂ liberated in the catalytic hydrogenolysis of 0₂. Complex I in CH₂C1₂ or C₂H₄CL₂ reacts with CO to give the dimethylsulfide complex RhCL₃(DMS)₃ via a facile reduction of DMSO ligands. Dimethylsulfoxide is reduced also by RhI species in CH₂CL₂ in the presence of two equivalents of acid to yield DMS, RhIII and H₂0. However, Rh I /2H⁺/DMS0 systems are relatively stable in DMA, because of the proton affinity of the solvent. Complex I reacts also with the strongly basic tertiary amine NEt₃ via a redox process in which the RhIII is reduced to Rh I with an accompanying dehydrogenation of the amine (eq. 4). RhCl₃ + 3NEt₃ → RhCl + 2NEt₃ HCl + CH₂=CHNEt₂ (4) The resulting ethenamine then reacts with I to give the ƞ¹-ylidic complex, RhCl₃(DMS̠O)₂(⁻CH₂CH=⁺NEt₂). Data from an earlier thesis, on a reaction between complex I and 1,8-bis(dimethylamino)naphthalene (or Proton Sponge), are reinterpreted in terms of a similar redox reaction that gives an N-carbene fragment (eq. 5),which is stabilized within the RhIII complex, RhCl₃(DMS̠O)₂(=CH-N(Me)-C₁₀H₆NMe₂•HCl). [formula omitted]
Searching for Neutrinos from WIMP Annihilations in the Galactic Stellar Disk
Creators: name: Myers, Zacharia
name: Nusser, Adi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Weakly interacting massive particles (WIMPs) are a viable candidate for the relic abundance of dark matter (DM) produced in the early universe. So far WIMPs have eluded direct detection through interactions with baryonic matter. Neutrino emission from accumulated WIMP annihilations in the solar core has been proposed as a signature of DM, but has not yet been detected. These null results may be due to small scale DM density fluctuations in the halo with the density of our local region being lower than the average (around 0.3 GeV/cm^3 ). However, the accumulated neutrino signal from WIMP annihilations in the Galactic stellar disk would be insensitive to local density variations. Inside the disk, dark matter can be captured by stars causing an enhanced annihilation rate and therefore a potentially higher neutrino flux than what would be observed from elsewhere in the halo. We estimate a neutrino flux from the WIMP annihilations in the stellar disk to be enhanced by more than an order of magnitude compared to the neutrino fluxes from the halo. We offer a conservative estimate for this enhanced flux, based on the WIMP-nucleon cross-sections obtained from direct-detection experiments by assuming a density of around 0.3 GeV/cm^3 for the local DM. We also compare the detectability of these fluxes with a signal of diffuse high energy neutrinos produced in the Milky Way by the interaction of cosmic rays (CRs) with the interstellar medium (ISM). These comparative signals should be observable by large neutrino detectors.
description: 8 pages, 3 figures, Submitted to MNRAS
Lithobius (Lithobius) aligherus Manfredi 1953
Creators: name: Zapparoli, Marzio
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy

description: 5. Lithobius (Lithobius) aligherus Manfredi, 1953
 1) Lithobius: Patrizi, 1952: 18.
 2) Lithobius doderoi aligherus Manfredi 1953: 98.
 3) Lithobius doderoi: Patrizi 1956a: 190.
 4) Lithobius doderoi aligherus Manfr.: Patrizi 1956b: 203.
 5) Lithobius doderoi Silv. subsp. aligherus: Manfredi 1956: 205.
 6) Lithobius doderoi alighericus [sic] Manfr., 1953: Cerruti 1968: 231. 7) Lithobius doderoi aligherus Manfredi: Brignoli 1972: 200.
 8) Lithobius doderoi aligherus Manfredi, 1956 [sic]: Puddu & Pirodda 1974: 176. 9) Lithobius doderoi Silv. subsp. aligherus Manfredi, 1953: Manfredi 1976: 231. 10) Lithobius doderoi algherius [sic]: Badini 1977: 90.
 11) Lithobius doderoi aligherus Manfredi, 1953: Cassola 1982: 632, 707. 12) Lithobius doderoi aligherus Manfredi 1953: De Miranda Restivo 1983: 112. 13) Lithobius doderoi aligherus Manfredi 1953: Minelli 1983b: 403, 407. 14) Lithobius doderoi aligherus Manfredi, 1953: Grafitti 1983: 46. 15) Lithobius (Lithobius) doderoi Silvestri, 1907: Minelli 1985: 38 [pars]. 16) Lithobius doderoi aligherus Manfr.: Grafitti & Mucedda 1988: 30. 17) Lithobius doderoi aligherus: Prota & Floris 1989: 92.
 18) Lithobius (Lithobius) piceus verhoeffi Demange, 1958: Grafitti & Zapparoli 1995: 127. 19) Lithobius doderoi aligherus Manfredi, 1953: Foddai et al. 1995: 6. 20) Lithobius doderoi Silv. subsp. aligherus Manfredi, 1953: Leonardi 1995: 138. 21) Lithobius piceus verhoeffi Demange, 1958: Foddai et al. 1995: 6 [pars]. 22) Lithobius doderoi aligherus Manfredi, 1953: Foddai et al. 1996: 360, tab. I. 23) Lithobius doderoi aligherus: De Waele & Grafitti 2000: 85.
 24) Lithobius aligherus Manfredi, 1953: Zapparoli 2001: 38, figs 1–4. 25) Lithobius aligherus: Grafitti 2001a: 23.
 26) Lithobius doderoi aligherus Manfr.: Grafitti & Mucedda 2001: 34. 27) Lithobius doderoi aligherus: Grafitti 2002: 275.
 28) Lithobius doderoi aligherus: Mucedda et al. 2002: 30.
 29) Lithobius aligherus Manfredi, 1953: Zapparoli & Minelli 2005: CD. not Lithobius doderoi alighericus [sic]: Puddu 1970: 85, 88.
description: Published as part of Zapparoli, Marzio, 2009, An annotated catalogue of the epigeic and cave centipedes (Chilopoda) of Sardinia *, pp. 56-168 in Zootaxa 2318 on page 66, DOI: 10.5281/zenodo.192026
Markus Osterrieder, Das wehrhafte Friedensreich. Bilder von Krieg und Frieden in Polen-Litauen (1505-1595)
Creators: name: Bömelburg, Hans-Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 3 (2005)
Free energy density for mean field perturbation of states of a one-dimensional spin chain
Creators: name: Hiai, Fumio
name: Mosonyi, Milan
name: Ohno, Hiromichi
name: Petz, Denes
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82B10, 82B20

description: Motivated by recent developments on large deviations in states of the spin chain, we reconsider the work of Petz, Raggio and Verbeure in 1989 on the variational expression of free energy density in the presence of a mean field type perturbation. We extend their results from the product state case to the Gibbs state case in the setting of translation-invariant interactions of finite range. In the special case of a locally faithful quantum Markov state, we clarify the relation between two different kinds of free energy densities (or pressure functions).
description: 29 pages, Section 5 added, to appear in Rev. Math. Phys
Long-Lived Unstable Superparticles at the LHC
Creators: name: Ishiwata, Koji
name: Ito, Takumi
name: Moroi, Takeo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In various models of supersymmetry (SUSY), the lightest superparticle in the minimal SUSY standard model sector, which we call MSSM-LSP, becomes unstable. Then, we may observe the decay of the MSSM-LSP in the detector at the LHC experiment. We show that the discovery of such a decay process (and the determination of the lifetime of the MSSM-LSP) may be possible at the LHC even if the decay length of the MSSM-LSP is much longer than the size of the detector; sizable number of the MSSM-LSPs decay inside the detector if the lifetime is shorter than 0.01-1 millisec. We also discuss the implications of the study of the MSSM-LSP decay for several well-motivated SUSY models.
description: 13 pages, 4 figures
A Semiclassical String Description of Wilson Loop with Local Operators
Creators: name: Sakaguchi, Makoto
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a semiclassical string description to circular Wilson loops without/with local operator insertions. By considering a semiclassical approximation of type IIB string theory on AdS_5 X S^5 around the corresponding classical solutions, quadratic actions with respect to fluctuations are computed. Then the dual corresponding operators describing the fluctuations are discussed from the point of view of a small deformation of the Wilson loops. The result gives new evidence for AdS/CFT correspondence.
description: 23pp, 1 figure; typos fixed, version to be published in NPB
Jaroslav Otčenášek, Němci v Čechách po roce 1945. Na příkladu západního podještědí
Creators: name: Reich, Andreas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 3 (2009): Vorträge der Sektion "Osteuropa" auf dem 37. Deutschen Reichshistorikertag
Møller's energy of the Kerr-NUT Metric
Creators: name: Nashed, Gamal G. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The energy distribution of the Kerr-NUT space-time is calculated using Møller's energy-momentum complex within the framework of the Riemannian geometry.
description: 6 pages Latex
Transformacja systemów medialnych w krajach Europy Środkowo-Wschodniej po 1989 roku
Creators: name: Bollinger, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 4 (2003)
Integrating cavity quantum electrodynamics and ultracold-atom chips with on-chip dielectric mirrors and temperature stabilization
Creators: name: Purdy, T. P.
name: Stamper-Kurn, D. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have fabricated an atom chip device which combines the circuitry for magnetic trapping of cold atoms with high-finesse optical resonators suitable for cavity QED in the single-atom strong coupling regime. Fabry-Perot optical resonators with finesse F > 2 X 10^5 were formed between a micropatterned on-chip planar mirror with lateral dimension of < 100 um and a curved mirror suspended above the chip. The strong and rapid thermal coupling between on-chip electrical and optical elements was utilized to stabilize the cavity mirror separation with servo bandwidth exceeding 100 kHz during simulated operation of the atom chip.
description: 5 pages, 4 figures, corrected typos in eq. 2