cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Acroneuria hitchcocki Kondratieff & Kirchner
Creators: name: DeWalt, R. Edward
name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Acroneuria
Acroneuria hitchcocki

description: Acroneuria hitchcocki Kondratieff & Kirchner. This species is presently known only from the Outer Bluegrass region of eastern Kentucky (Kondratieff & Kirchner 1988). The identity of three adults from southeastern Indiana was confirmed by B.C. Kondratieff. IN, Fayette Co., [West Fork Whitewater River], 2 mi W Everton at Boys Club Camp, [39.54717, -85.17018], 6/8/1987, D. E. Bowles, UVlight, 2♂, ♀ (BYU).
description: Published as part of DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, pp. 31-50 in Illiesia 7 (3) on page 39, DOI: 10.5281/zenodo.4760399
Topological surface states of Bi2Se3 with the coexistence of Se vacancies
Creators: name: Yan, Binghai
name: Zhang, Delin
name: Felser, Claudia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Although topological surface states are known to be robust against non-magnetic surface perturbations, their band dispersions and spatial distributions are still sensitive to the surface defects. Take Bi2Se3 as an example, we demonstrated that Se vacancies modifies the surface band structures considerably. When large numbers of Se vacancies exist on the surface, topological surface states may sink down from the first to second quintuple layer and get separated from the vacancies. We simulated STM images to distinguish the surfaces with Se- and Bi-terminations.
description: submitted to the Phys. Status Solidi RRL, Focus Issue on Topological Insulator Materials
Delta r in the Two-Higgs-Doublet Model at full one loop level -- and beyond
Creators: name: Lopez-Val, David
name: Sola, Joan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: After the recent discovery of a Higgs-like boson particle at the CERN LHC-collider, it becomes more necessary than ever to prepare ourselves for identifying its standard or non-standard nature. The Electroweak parameter Delta r relating the values of the gauge boson masses [MW,MZ] and the Fermi constant [G_F] is the traditional observable encoding high precision information of the electroweak physics at the quantum level. In this work we present a complete quantitative study of Delta r in the framework of the general (unconstrained) Two-Higgs-Doublet Model (2HDM). First of all we report on a systematic analysis of Delta r at the full one loop level in the general 2HDM, which to our knowledge was missing in the literature. Thereby we extract a theoretical prediction for the mass of the W-boson in this model, taking MZ, α_{em} and G_F as experimental inputs. We find typical corrections leading to mass shifts $δMW \sim 20-40 MeV$ which help to improve the agreement with the experimentally measured value, in a degree no less significant than in the MSSM case. In the second part of our study we extend our calculation beyond the mere one-loop order. We devise an effective Lagrangian approach that captures the dominant higher order quantum effects on delta rho (viz. that part of Delta r describing the breaking of the approximate SU(2) custodial symmetry) in the limit of large Higgs boson self-interactions. This limit constitutes a telltale property of the general 2HDM which is unmatched by e.g. the MSSM. Our conclusion is that the Electroweak precision program to be conducted at the LHC, and maybe at a future linear collider, can nicely complement the direct searches. Should these distinctive loop effects be eventually found they would signal a smoking gun hinting at non-standard Higgs physics.
description: LaTeX, 12 figures, 4 tables. Extended discussion, references added. Version accepted in Eur. Phys. J. C
Using Weyl symmetry to make Graphene a real lab for fundamental physics
Creators: name: Iorio, Alfredo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Materials Science (cond-mat.mtrl-sci)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the first attempt to introduce gauge theories in physics, Hermann Weyl, around the 1920s, proposed certain scale transformations to be a fundamental symmetry of nature. Despite the intense use of Weyl symmetry that has been made over the decades, in various theoretical settings, this idea never found its way to the laboratory. Recently, building-up from work by Lochlainn O'Raifeartaigh and collaborators on the Weyl-gauge symmetry, applications of Weyl-symmetry to the electronic properties of graphene have been put forward, first, in a theoretical setting, and later, in an experimental proposal. Here I review those results, by enlarging and deepening the discussion of certain aspects, and by pointing to the steps necessary to make graphene a testing ground of fundamental ideas.
description: 16 pages, 6 figures; invited talk at the "3rd O'Raifeartaigh Conference on Symmetry and Integrability" 19-21 July, 2012 - Munich, Germany
Rational points on curves over function fields
Creators: name: Pacheco, Amilcar
name: Pazuki, Fabien
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We provide in this paper an upper bound for the number of rational points on a curve defined over a one variable function field over a finite field. The bound only depends on the curve and the field, but not on the Jacobian variety of the curve.
Sub-barrier Coulomb effects on the interference pattern in tunneling ionization photoelectron spectra
Creators: name: Yan, Tian-Min
name: Bauer, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a quantum trajectory-based semi-classical method to account for Coulomb interaction between the photoelectron and the parent ion in the classically forbidden, sub-barrier region during strong-field tunneling ionization processes. We show that---besides the well-known modification of the tunneling ionization probability---there is also an influence on the interference pattern in the photoelectron spectra. In the long-wavelength limit, the shift of the intra-cycle interference fringes caused by sub-barrier Coulomb effects in the laser polarization direction can be derived analytically. We compare our results with \emph{ab initio} solutions of the time-dependent Schrödinger equation and find good agreement in the long-wavelength regime, whereas the standard strong field approximation fails. We show that the nodal structure along low-order above-threshold ionization rings is also affected by sub-barrier Coulomb effects.
description: 10 pages, 4 figures, RevTeX
Linked Data in der iDAI.world
Creators: name: Thänert, Sabine
name: Unger, Marina
Publisher: name: Informationspraxis
Year: 2019

description: Anhand des DFG-Projektes "Gelehrte, Ausgräber und Kunsthändler: Die Korrespondenz des Instituto di Corrispondenza Archeologica als Wissensquelle und Netzwerkindikator" diskutiert der Beitrag Aspekte von Linked Data in den Infrastrukturen der iDAI.world und darüber hinaus. Die Dokumentbasis bilden die sogenannten Gelehrtenbriefe aus den Archiven des DAI Rom und der Zentrale in Berlin, die im Rahmen des Projekts erfasst, digitalisiert und weiterverarbeitet werden. Die Autographe sind zum einen einzigartige Quellen archäologischen und fachhistorischen Wissens, zum anderen zeugen sie von einem dichten Netzwerk, das sich um das Institut Archäologischer Korrespondenz im Laufe des 19. Jahrhunderts gebildet hatte.


Im Fokus des Beitrags stehen neben Themen wie Metadaten- und Normdatengenerierung auch die Publikation der Briefe als Linked Data, die inhaltliche Aufarbeitung mittels Methoden des Text-Mining sowie der Netzwerkvisualisierung.
description: Informationspraxis, Bd. 5 Nr. 1 (2019)
Electron-hole pairing in topological insulator heterostructures in the quantum Hall state
Creators: name: Germash, K. V.
name: Fil, D. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A thin film of a topological insulator (TI) on a dielectric substrate and a bulk TI - dielectric film - bulk TI structure are considered as natural double-well heterostructures suitable for realizing the counterflow superconductivity. The effect is connected with pairing of electrons and holes belonging to different surfaces of TI and the transition of a gas of electron-hole pairs into a superfluid state. The case of TI heterostructures subjected to a strong perpendicular magnetic field is considered. It is shown that such systems are characterized by two critical temperatures - a mean-field temperature of pairing and a much smaller temperature of the superfluid transition. The dependence of the critical temperatures on the magnetic field is computed. The advantages of TI based structures in comparison with GaAs heterostructures as well as graphene based heterostructures are discussed.
description: published version
The Sun's position in the sky
Creators: name: Jenkins, Alejandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We express the position of the Sun in the sky as a function of time and the observer's geographic coordinates. Our method is based on applying rotation matrices to vectors describing points on the celestial sphere. We also derive direct expressions, as functions of date of the year and geographic latitude, for the duration of daylight, the maximum and minimum altitudes of the Sun, and the cardinal directions to sunrise and sunset. We discuss how to account for the eccentricity of the earth's orbit, the precessions of the equinoxes and the perihelion, the size of the solar disk, and atmospheric refraction. We illustrate these results by computing the dates of "Manhattanhenge" (when sunset aligns with the east-west streets on the main traffic grid for Manhattan, in New York City), by plotting the altitude of the Sun over representative cities as a function of time, and by showing plots ("analemmas") for the position of the Sun in the sky at a given hour of the day.
description: 19 pages, 16 figures. v3: Replaced to match published version and to re-package Mathematica notebook as an ancillary file
G. Franzius (Hrsg.), Aspekte römisch-germanischer Beziehungen in der frühen Kaiserzeit
Creators: name: Kehne, Peter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: G. Franzius (Hrsg.), Aspekte römisch-germanischer Beziehungen in der frühen Kaiserzeit. Vortragsreihe zur Sonderausstellung „Kalkriese - Römer im Osnabrücker Land“ vom 26. 3.-31. 5. 1993 in Osnabrück. Quellen und Schrifttum zur Kulturgeschichte des Wiehengebirgsraumes, Reihe B, Bd. 1. Espelkamp: Verlag Marie L. Leidorf 1995, 193 Seiten mit zahlreichen Abbildungen. ISBN 3-924734-79-8 und ISSN 0947-4676.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 67 (1998): Nachrichten aus Niedersachsens Urgeschichte
Search for pair production of massive particles decaying into three quarks with the ATLAS detector in sqrt(s) = 7 TeV pp collisions at the LHC
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search is conducted for hadronic three-body decays of a new massive coloured particle in sqrt(s) = 7 TeV pp collisions at the LHC using an integrated luminosity of 4.6/fb collected by the ATLAS detector. Supersymmetric gluino pair production in the context of a model with R-parity violation is used as a benchmark scenario. The analysis is divided into two search channels, each optimised separately for their sensitivity to high-mass and low-mass gluino production. The first search channel uses a stringent selection on the transverse momentum of the six leading jets and is performed as a counting experiment. The second search channel focuses on low-mass gluinos produced with a large boost. Large-radius jets are selected and the invariant mass of each of the two leading jets is used as a discriminant between the signal and the background. The results are found to be consistent with Standard Model expectations and limits are set on the allowed gluino mass.
description: 28 pages plus author list (50 pages total), 6 figures, 7 tables, submitted to JHEP, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2012-16/
Anmerkungen zur Steterburg bei Salzgitter-Thiede
Creators: name: Grunwald, Lutz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 68 (1999): Nachrichten aus Niedersachsens Urgeschichte
Effects of Food Provisioning on the Daily Ration and Dive Site Use of Great Hammerhead Sharks, Sphyrna mokarran
Creators: name: Heim, Vital
name: Dhellemmes, Félicie
name: Smukall, Matthew
name: Gruber, Samuel H.
name: Guttridge, Tristan L.
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: wildlife tourism
subject: shark diving
subject: bioenergetics
subject: endangered species
subject: elasmobranch
subject: 570 Biologie
subject: 590 Tiere (Zoologie)

description: Wildlife provisioning is popular, economically valuable, and a rapidly growing part of marine tourism, with great potential to benefit conservation. However, it remains controversial due to limited understanding of its implications on the behavior and ecology of target species. In this study, we modeled how various abiotic and biotic factors influenced great hammerhead sharks’ (Sphyrna mokarran) use of a recreational dive site in Bimini, the Bahamas, where shark-feeding has been conducted since 2012. Further, we calculated bioenergetic models to estimate their daily ration and examined if individual sharks fulfilled their daily energetic requirements from food uptake during dives. Between December 2016 and May 2017, we collected data during 104 provisioning dives in collaboration with a local dive operator. Twenty-eight individual great hammerhead sharks were observed, 11 were philopatric (i.e., identified at the dive site in previous years), and 17 were new (i.e., identified at the dive site for the first time during this study) individuals. On average, four sharks were observed daily, occasionally up to nine individuals, with some individuals spending more than 2 h attending each dive, consuming up to 4.75 kg of provisioned food per dive and returning repeatedly throughout the study period. When we grouped sharks based on their previous experience of the dive site (i.e., philopatric vs. new sharks), we found significantly higher attendance indices, i.e., the number of attended dives divided by the total number dives, and longer presence times during dives in philopatric sharks and different responses toward the number of boats and conspecifics between the two groups. Overall, great hammerhead sharks increased their bait uptake during longer dives and when more boats were present at the dive site. Finally, nine of 12 provisioned great hammerhead sharks were regularly able to fuel their daily energetic requirements from provisioned food alone, with two sharks doing so on 77.8% of all dives. Our study provides insights into how large-bodied marine predators react toward wildlife tourism associated provisioning and allows further discussion about daily energy uptake during provisioning dives, its potential impacts on the ecological role of the target species and associated management measures.
Anmerkungen zu den Flurnamen der Gemeinde Belm, Ldkr. Osnabrück
Creators: name: Udolph, Jürgen
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 68 (1999): Nachrichten aus Niedersachsens Urgeschichte
OLIMPIADA KONGRESSLARI VA HOZIRGI DAVR MUAMMOLARI
Creators: name: Kuchkarov Ulug`bek Lochinbekovich Namangan muxandislik texnologiya instituti Jismoniy tarbiya va sport bo`limi boshlig`i, v, b professor
Publisher: name: Zenodo
Year: 2023

description: Mazkur maqolada Olimpiada kongresslari va hozirgi davr muammolari haqida so`z yuritilgan.
Kalit so'zlar: olimpiya o'yinlari, xalqaro sport musobaqalari, g'irromlik, vijdonsizlik, sotqinlik holatlari, XOQ, MOQ, XSF faoliyatlari,
Impact of turbulence in long range quantum and classical communications
Creators: name: Capraro, I.
name: Tomaello, A.
name: Dall'Arche, A.
name: Gerlin, F.
name: Ursin, R.
name: Vallone, G.
name: Villoresi, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The study of the free-space distribution of quantum correlations is necessary for any future application of quantum as classical communication aiming to connect two remote locations. Here we study the propagation of a coherent laser beam over 143 Km (between Tenerife and La Palma Islands of the Canary archipelagos). By attenuating the beam we also studied the propagation at the single photon level. We investigated the statistic of arrival of the incoming photons and the scintillation of the beam. From the analysis of the data, we propose the exploitation of turbulence to improve the SNR of the signal.
description: 5 Pages, 5 figures, 1 Table, revtex4
Acroneuria perplexa Frison
Creators: name: DeWalt, R. Edward
name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Acroneuria
Acroneuria perplexa

description: Acroneuria perplexa Frison. This species has been reported from Oklahoma east to West Virginia (Stark 2004). Most historical records from Illinois, with the exception of one collection from the Sangamon River, are from the Ohio River. DeWalt et al. (2005) listed it as extirpated from the state. Grubbs (2004) presented records from several counties in Indiana, represented only by specimens collected prior to 1950. Examination of museum and new material indicate a broader distribution and confirm its continued presence in Indiana. IL, Wabash Co., Mt. Carmel, 6/17/1947, B.D. Burks, M.W. Sanderson, ♂, ♀ (CNC); IN, Brown Co., Yellowwood Lake, [39.18118, - 86.35254], 6/26-30/1946, E. Mockford, 4♂ (CNC); Dubois Co., [16 km NNE Birdseye], SIPAC (Southern Indiana-Purdue Agricultural Center), [38.45634, -86.68852], 6/12/2005, light trap, ♂, ♀ (PERC); Lawrence Co., FPAC (Felden Purdue Agricultural Center), [2.2 km NNE Eureka], [38.89544, -86.55705], 6/26/2005, light trap, ♂ (PERC); Martin Co., East Fork White River, 0.5 km SSW Shoals, 38.659, -86.8023, 6/20/2006, R.E. DeWalt, 49♂, ♀ (INHS); [East Fork] White River at Hindostan Falls Public Fishing Site, [38.62196, -86.8479], 6/20-21/1974, A.V. Provonsha, L. Dersch, 5♂ (PERC); Shelby Co., Shelbyville, 6/22/1962, Freeman, Lewis, ♂ (CNC).
description: Published as part of DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, pp. 31-50 in Illiesia 7 (3) on page 40, DOI: 10.5281/zenodo.4760399
description: {"references": ["Stark, B. P. 2004. Perlidae (The Stones). Pages 61 - 148. In: Stark, B. P. & B. J. Armitage (editors). The stoneflies (Plecoptera) of eastern North America. Volume II. Chloroperlidae, Perlidae, and Perlodidae (Perlodinae). Bulletin of the Ohio Biological Survey, New Series, Volume 14. Ohio Biological Society, Columbus, Ohio. 192 pp.", "DeWalt, R. E. & B. D. Heinold. 2005. Summer emerging Ephemeroptera, Plecoptera, and Trichoptera of Abrams Creek, Great Smoky Mountains National Park. Proceedings of the Entomological Society of Washington, 107: 34 - 48.", "Grubbs, S. A. 2004. Studies on Indiana stoneflies (Plecoptera), with an annotated and revised state checklist. Proceedings of the Entomological Society of Washington, 106: 865 - 876."]}
Wolf-Dieter Steinmetz, Ostfalen, Schöningen und Ohrum im 8. Jahrhundert
Creators: name: Grunwald, Lutz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Wolf-Dieter Steinmetz, Ostfalen, Schöningen und Ohrum im 8. Jahrhundert. Merowinger und Karolinger zwischen Harz und Heide. Mit Beiträgen von Herbert Blume, Kirstin Casemir und Jürgen Udolph. Gelsenkirchen/Schwelm: Verlag Edition Archaea 1998. 128 Seiten, 34 farbige und 63 schwarz-weiße Abbildungen. ISBN 3-929439-78-6
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 68 (1999): Nachrichten aus Niedersachsens Urgeschichte
Neutron Electric Dipole Moment Induced by the Strangeness Revisited
Creators: name: Fuyuto, Kaori
name: Hisano, Junji
name: Nagata, Natsumi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have revisited the calculation of the neutron electric dipole moment in the presence of the CP-violating operators up to dimension five based on the chiral perturbation theory. Especially, we focus on the contribution of strangeness content. In the calculation, we extract the nucleon matrix elements of scalar-type quark operators from the results of the lattice QCD simulations, while those of the dipole-type quark-gluon operators are evaluated by using the method of the QCD sum rules. As a result, it is found that although the strangeness quantity in nucleon is small, the contribution of the chromoelectric dipole moment of strange quark may be still sizable, and thus may offer a sensitive probe for the CP-violating interactions in physics beyond the Standard Model.
description: 20 pages, 3 figures
Pyrochlore electrons under pressure, heat and field: shedding light on the iridates
Creators: name: Witczak-Krempa, William
name: Go, Ara
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the finite temperature and magnetic field phase diagram of electrons on the pyrochlore lattice subject to a local repulsion as a model for the pyrochlore iridates. We provide the most general symmetry-allowed Hamiltonian, including next-nearest neighbour hopping, and relate it to a Slater-Koster based Hamiltonian for the iridates. It captures Lifshitz and/or thermal transitions between several phases such as metals, semimetals, topological insulators and Weyl semimetals, and gapped antiferromagnets with different orders. Our results on the charge conductivity, both DC and optical, Hall coefficient, magnetization and susceptibility show good agreement with recent experiments and provide new predictions. As such, our effective model sheds light on the pyrochlore iridates in a unified way.
description: 6+3 pages, 7+2 figures. v3: expanded version, with 3 new figures
Equality of Two Definitions for Transverse Momentum Dependent Parton Distribution Functions
Creators: name: Collins, John C.
name: Rogers, Ted C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We compare recent, seemingly different, approaches to TMD-factorization (due to Echevarria, Idilbi, and Scimemi and to Collins), and show that they are the same, apart from an apparent difference in their definition of the \MSbar{} renormalization scheme.
description: Fixed arrows on figures, added comments to the summary; 12 pages, 3 figures
Dimensionality of the spatio-temporal entanglement of PDC photon pairs
Creators: name: Gatti, A.
name: Corti, T.
name: Brambilla, E.
name: Horoshko, D. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work the Schmidt number of the two-photon state generated by parametric-down conversion (PDC) is evaluated in the framework of a fully spatio-temporal model for PDC. A comparison with the results obtained in either purely spatial or purely temporal models shows that the degree of entanglement of the PDC state cannot be trivially reduced to the product of the Schmidt numbers obtained in models with lower dimensionality, unless the detected bandwidth is very narrow. This result is a consequence of the non-factorability of the state in the spatial and temporal degrees of freedoms of twin photons. In the limit of a broad pump beam, we provide a geometrical interpretation of the Schmidt number, as the ratio between the volume of the phase matching region and of a correlation volume.
description: 17 pages, 10 figures. Submitted to Phys. Rev. A
Spin-Transfer Torque Magnetization Reversal in Uniaxial Nanomagnets with Thermal Noise
Creators: name: Pinna, D.
name: Kent, A. D.
name: Stein, D. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider the general Landau-Lifshitz-Gilbert (LLG) dynamical theory underlying the magnetization switching rates of a thin film uniaxial magnet subject to spin-torque effects and thermal fluctuations (thermal noise). After discussing the various dynamical regimes governing the switching phenomena, we present analytical results for the mean switching time behavior. Our approach, based on explicitly solving the first passage time problem, allows for a straightforward analysis of the thermally assisted, low spin-torque, switching asymptotics of thin film magnets. To verify our theory, we have developed an efficient GPU-based micromagnetic code to simulate the stochastic LLG dynamics out to millisecond timescales. We explore the effects of geometrical tilts between the spin-current and uniaxial anisotropy axes on the thermally assisted dynamics. We find that even in the absence of axial symmetry, the switching times can be functionally described in a form virtually identical to the collinear case. We further verify that asymptotic behavior is reached fairly slowly, thus quantifying the role of thermal noise in the crossover regime linking deterministic to thermally assisted magnetization reversal.
description: arXiv admin note: text overlap with arXiv:1205.6509
String-inspired representations of photon/gluon amplitudes
Creators: name: Ahmadiniaz, Naser
name: Schubert, Christian
name: Villanueva, Victor M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The string-based Bern-Kosower rules provide an efficient way for obtaining parameter integral representations of the one-loop N - photon/gluon amplitudes involving a scalar, spinor or gluon loop, starting from a master formula and using a certain integration-by-parts (`IBP') procedure. Strassler observed that this algorithm also relates to gauge invariance, since it leads to the absorption of polarization vectors into field strength tensors. Here we present a systematic IBP algorithm that works for arbitrary N and leads to an integrand that is not only suitable for the application of the Bern-Kosower rules but also optimized with respect to gauge invariance. In the photon case this means manifest transversality at the integrand level, in the gluon case that a form factor decomposition of the amplitude into transversal and longitudinal parts is generated naturally by the IBP, without the necessity to consider the nonabelian Ward identities. Our algorithm is valid off-shell, and provides an extremely efficient way of calculating the one-loop one-particle-irreducible off-shell Green's functions (`vertices') in QCD. It can also be applied essentially unchanged to the one-loop gauge boson amplitudes in open string theory. In the abelian case, we study the systematics of the IBP also for the practically important case of the one-loop N - photon amplitudes in a constant field.
description: 27 pages, no figures, v2 corrects typos in eqs. (3.7) and (4.11)
Poly(lactic acid) stereocomplexes based molecular architectures : synthesis and crystallization
Creators: name: Michell, Rose Mary
name: Ladelta, Viko
name: Silva, Edgar
name: Müller, Alejandro J.
name: Hadjichristidis, Nikos
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 530

description: This review presents the state of the art of complex macromolecular architectures based on polylactide stereocomplexes (PLA-sc) from the viewpoint of synthesis and crystallization. First, we discuss the nomenclature, synthesis, epimerization, and lactide (LA) properties as a bio-derived cyclic dimeric monomer comprising two chiral carbons. Among several polymerization methods, catalytic ring-opening polymerization (ROP) is the most common and versatile technique to access stereoregular (isotactic) PLA, which is the prerequisite to preparing PLA-sc. Combined with other living and controlled/living polymerization techniques, ROP of LA has yielded various PLA-sc-based macromolecular architectures, including copolymers, stars, graft, cyclic, brush, and hybrid materials. New approaches to synthesizing monodisperse discrete oligoLA are also discussed. We show that a small change in the architectures, microstructures, molecular weight, or other chemical and physical modifications affects the behavior of PLA-sc. Moreover, the crystallization of PLA-sc, after more than 30 years of study, still presents many challenges. The crystalline morphology is also a subject of debate. Recent findings suggest a new crystalline unit cell for PLA-sc. Adding a third component or changing chain architecture can significantly modify the properties of the formed PLA-sc. The complex relationship between flexibility, nucleation, diffusion, and the interactions needed for the joint crystallization of the enantiomers constitutes a very large source of variables. As a result, PLA-based stereocomplex materials can be tailored by manipulating one or several of these variables.
Comprehensive structural characterization of water-soluble and water-insoluble homoexopolysaccharides from seven lactic acid bacteria
Creators: name: Ernst, Luise
name: Schweers, Hannah Katharina
name: Werner, Annemarie
name: Wefers, Daniel
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 540

description: Several lactic acid bacteria are able to produce water-soluble and water-insoluble homoexopolysaccharides (HoEPS) from sucrose. In this study, structures of all HoEPS which were fermentatively produced by Leuconostoc mesenteroides subsp. dextranicum NRRL B-1121 and B-1144, Leuconostoc mesenteroides subsp. mesenteroides NRRL B-1149, B-1438 and B-1118, Leuconostoc suionicum DSM 20241, and Liquorilactobacillus satsumensis DSM 16230 were systematically analyzed. Monosaccharide analysis, methylation analysis, NMR spectroscopy, size-exclusion chromatography, and different enzymatic fingerprinting methods were used to obtain detailed structural information. All strains produced water-soluble dextrans and/or levans as well as water-insoluble glucans. Levans showed different degrees of branching and high molecular weights, whereas dextrans had comparable structures and broader size distributions. Fine structures of water-soluble HoEPS were analyzed after endo-dextranase and endo-levanase hydrolysis. Water-insoluble glucans were composed of different portions of 1,3-linkages (5 to 40 %). Hydrolysis with endo-dextranase and endo-mutanase yielded further information on block sizes and varying fine structures. Overall, clear differences between HoEPS yields and structures were observed.
Measurements of identified particle anisotropic flow in Cu+Au and U+U collisions by PHENIX experiment
Creators: name: Huang, Shengli
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this paper, new measurements of anisotropic flow ($v_{1}$, $v_{2}$) for identified particles such as pions and proton in Cu+Au collisions at 200 GeV and U+U collisions at 193 GeV are reported. The anisotropic flow is studied as a function of $p_{T}$ and centrality in these two collision systems. In ultra-central U+U collisions (0--2% centrality), $v_2$ of protons shows a weak $p_{T}$ dependence for $p_T$ 1 GeV/c with respect to the first-order event plane, the angle of which is determined by the Au-going spectators. The scaling of identified particles $v_2$ with the number of valence quarks ($n_q$) has been observed, in different centrality bins, with the transverse kinetic energy in these two collision systems.
Optimization techniques for semi-automated 3D rigid registration in multimodal image-guided deep brain stimulation
Creators: name: Al-Jaberi, Fadil
name: Fachet, Melanie
name: Moeskes, Matthias
name: Skalej, Martin
name: Hoeschen, Christoph
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 610

description: Multimodal image registration is vital in DeepBrain Stimulation (DBS) surgery. DBS treats movement dis-orders by implanting a neurostimulator device in the brain todeliver electrical impulses. Image registration between com-puted tomography (CT) and cone beam computed tomography(CBCT) involves fusing images with a specific field of view(FOV) to visualize individual electrode contacts. This containsimportant information about the location of segmented con-tacts that can reduce the time required for electrode program-ming. We performed a semi-automated multimodal image reg-istration with different FOV between CT and CBCT imagesdue to the tiny structures of segmented electrode contacts thatnecessitate high accuracy in the registration. In this work, wepresent an optimization workflow for multi-modal image reg-istration using a combination of different similarity metrics,interpolators, and optimizers. Optimization-based rigid imageregistration (RIR) is a common method for registering images.The selection of appropriate interpolators and similarity met-rics is crucial for the success of this optimization-based imageregistration process. We rely on quantitative measures to com-pare their performance. Registration was performed on CT andCBCT images for DBS datasets with an image registration al-gorithm written in Python using the Insight Segmentation andRegistration Toolkit (ITK). Several combinations of similaritymetrics and interpolators were used, including mean squaredifference (MSD), mutual information (MI), correlation andnearest neighbors (NN), linear (LI), and B-Spline (SPI), re-spectively. The combination of a correlation as similarity met-ric, B-Spline interpolation, and GD optimizer performs thebest in optimizing the 3D RIR algorithm, enhancing the visu-alization of segmented electrode contacts. Patients undergoingDBS therapy may ultimately benefit from this.
Views of the Chiral Magnetic Effect
Creators: name: Fukushima, Kenji
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: My personal views of the Chiral Magnetic Effect are presented, which starts with a story about how we came up with the electric-current formula and continues to unsettled subtleties in the formula. There are desirable features in the formula of the Chiral Magnetic Effect but some considerations would lead us to even more questions than elucidations. The interpretation of the produced current is indeed very non-trivial and it involves a lot of confusions that have not been resolved.
description: 19 pages, no figure; typos corrected, references significantly updated, to appear in Lect. Notes Phys. "Strongly interacting matter in magnetic fields" (Springer), edited by D. Kharzeev, K. Landsteiner, A. Schmitt, H.-U. Yee
Revisiting the pKa-Flux method for determining intrinsic membrane permeability
Creators: name: Dahley, Carolin
name: Goss, Kai-Uwe
name: Ebert, Andrea
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 540

description: Intrinsic membrane permeability is one of several factors that critically determine the intestinal absorption of a chemical. The intrinsic membrane permeability of a chemical is usually extracted from transwell experiments with Caco-2 or MDCK cells, preferably by the pKa-Flux method, which is considered the method of choice when aqueous boundary layer effects need to be excluded. The pKa-Flux method has two variants, the iso-pH method, where apical and basolateral pH are equal, and the gradient-pH method, where apical and basolateral pH are different. The most commonly used method is the gradient-pH method, as it is intended to reflect the pH-conditions in the gastrointestinal tract. However, concentration-shift effects caused by the applied pH-difference between apical and basolateral compartment in the gradient-pH method have not been considered in the evaluation of the experimental data in the past. Consequently, incorrect intrinsic membrane permeabilities have been determined. In this work, we present a revised method for extracting the intrinsic membrane permeability from gradient-pH data that considers concentration-shift effects in the basolateral aqueous boundary layer and filter as well as in the cytosol. Furthermore, we propose the use of the iso-pH method, where only concentration-shift effects in the cytosol need to be considered, as an alternative to the gradient-pH method. We use the five lipophilic bases amantadine, chloroquine, propranolol, venlafaxine and verapamil as examples to compare gradient-pH method and iso-pH method with regard to the extractability of the intrinsic membrane permeability. For lipophilic bases, the iso-pH method proves to be advantageous. All intrinsic membrane permeabilities determined in this work were substantially higher than the intrinsic membrane permeabilities reported in literature.
Museen der Stadt Lüdenscheid, die Gebrüder Grün. Revolution und soziale Republik – Kulturgeschichte und Literatur. 2 Bde., hg. von E. Trox, 1997
Creators: name: Corbin-Schuffels, A.-M.
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 26 Nr. 3 (1999)
ZooMS confirms geometric morphometrics species identification of ancient sheep and goat
Creators: name: Jeanjean, Marine
name: McGrath, Krista
name: Valenzuela Lamas, Silvia
name: Nieto-Espinet, Ariadna
name: Schafberg, Renate
name: Parés-Casanova, Pere Miquel
name: Jiménez-Manchón, Sergio
name: Guintard, Claude
name: Tekkouk, Faiza
name: Ridouh, Rania
name: Mureau, Cyprien
name: Evin, Allowen
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 930

description: Geometric morphometrics can effectively distinguish isolated third lower molars of present-day sheep and goat, but its applicability to archaeological specimens has yet to be established. Using a modern reference collection of 743 sheep and goats and a two-dimensional landmark-based geometric morphometric (GMM) protocol, this study aimed to morphometrically identify 109 archaeological specimens, used as case studies, dating from the Late Neolithic to the modern period/era. These morphometric identifications were then compared to molecular identifications via collagen peptide mass fingerprinting, known as Zooarcheology by Mass Spectrometry (ZooMS). ZooMS confirmed the morphometric identifications for 104 specimens, with the five misidentified specimens all morphometrically identified as goat. Modern sheep and goats have larger teeth and distinct shapes compared to their archaeological counterparts, suggesting strong differences between archaeological and modern specimens potentially linked with recent breed improvement or geographical origin of the specimens. In addition, for both species, some of the archaeological dental morphologies do not match with any of our modern references. This study validates the applicability of geometric morphometrics for identifying isolated archaeological sheep and goat teeth. It represents a stepping stone for future, non-destructive, bioarchaeological studies of the two species.
Piecewise Linearity of Approximate Density Functionals Revisited: Implications for Frontier Orbital Energies
Creators: name: Kraisler, Eli
name: Kronik, Leeor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In the exact Kohn-Sham density-functional theory (DFT), the total energy versus the number of electrons is a series of linear segments between integer points. However, commonly used approximate density functionals produce total energies that do not exhibit this piecewise-linear behavior. As a result, the ionization potential theorem, equating the highest occupied eigenvalue with the ionization potential, is grossly disobeyed. Here, we show that, contrary to conventional wisdom, most of the required piecewise-linearity of an arbitrary approximate density functional can be restored by careful consideration of the ensemble generalization of DFT. Furthermore, the resulting formulation introduces the desired derivative discontinuity to any approximate exchange-correlation functional, even one that is explicitly density-dependent. This opens the door to calculations of the ionization potential and electron affinity even without explicit electron removal or addition. All these advances are achieved while neither introducing empiricism nor changing the underlying functional form. The power of the approach is demonstrated on benchmark systems using the local density approximation as an illustrative example.
description: Minor correction to Eqs. (10) and (III.7), information added to the Supplementary Material, typos corrected
How enzymatic hydrolysis of polysorbate 20 influences colloidal protein stability
Creators: name: Glücklich, Nils
name: Carle, Stefan
name: Diederichs, Tim
name: Buske, Julia
name: Mäder, Karsten
name: Garidel, Patrick
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 540

description: Polysorbates (PS) are esters of ethoxylated sorbitol anhydrides of different composition and are widely used surfactants in biologics. PSs are applied to increase protein stability and concomitant shelf-life via shielding against e.g., interfacial stresses. Due to the presence of specific lipolytic host cell protein (HCP) contaminations in the drug substance, PSs can be degraded via enzymatic hydrolysis. Surfactant hydrolysis leads to the formation of degradants, such as free fatty acids that might form fatty acid particles. In addition, PS degradation may reduce surfactant functionality and thus reduce the protection of the active pharmaceutical ingredient (API). Although enzymatic degradation was observed and reported in the last years, less is known about the relationship between certain polysorbate degradation patterns and the increase of mechanical and interfacial stress towards the API. In this study, the impact of specifically hydrolyzed polysorbate 20 (PS20) towards the stabilization of two monoclonal antibodies (mAbs) during accelerated shaking stress conditions was investigated. The results show that a specific enzymatic degradation pattern of PS20 can influence the colloidal stability of biopharmaceutical formulations. Furthermore, the kinetics of the appearance of visual phenomena, opalescence, and particle formation depended on the polysorbate degradation fingerprint as induced via the presence of surrogate enzymes. The current case study shows the importance of focusing on specific polysorbate ester fractions to understand the overall colloidal protein stabilizing effect. The performed study gives first insight into the functional properties of PS and helps to evaluate the impact of PS degradation in the formulation development of biopharmaceuticals in general.
Experimental observation of the X-shaped near field spatio-temporal correlation of ultra-broadband twin beams
Creators: name: Jedrkiewicz, O.
name: Gatti, A.
name: Brambilla, E.
name: Di Trapani, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we present the experimental observation of the non factorable near field spatio-temporal correlation of ultra-broadband twin beams generated by parametric down conversion (PDC), in an interferometric-type experiment using sum frequency generation, where both the temporal and spatial degrees of freedom of PDC light are controlled with very high resolution. The revealed X-structure of the correlation is in accordance with the predictions of the theory.
description: 5 pages, 3 figures
Perlesta golconda DeWalt & Stark
Creators: name: DeWalt, R. Edward
name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Perlesta
Perlesta golconda

description: Perlesta golconda DeWalt & Stark. This riverine species was described from the southern tip of Illinois and is found statewide (DeWalt et al. 1998, 2001), and has since been reported from neighboring Iowa (Heimdal et al. 2004), Missouri (Stark 2004), and Nebraska (DeWalt et al. 2001). Grubbs (2004) discussed this species as a possible addition to the Indiana fauna. We present three historical records for Indiana. IN, Elkhart Co., St. Joseph River, near Bristol, [41.7219, -85.8176], 7/4/1947, E. Mockford, ♂ (CNC); Greene Co., 7/11/1901, ♂ (PERC); Lawrence Co., Bedford, [38.861, -86.487], 7/6/1928, L.F. Steiner, ♂ (PERC).
description: Published as part of DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, pp. 31-50 in Illiesia 7 (3) on page 41, DOI: 10.5281/zenodo.4760399
description: {"references": ["DeWalt, R. E., B. P. Stark, & M. A. Harris. 1998. Perlesta golconda (Plecoptera: Perlidae), a new stonefly species from Illinois, Entomological News, 109: 315 - 317.", "DeWalt, R. E., D. W. Webb, & T. N. Kompare. 2001. The Perlesta placida (Hagen) complex (Plecoptera: Perlidae) in Illinois, new state records, distributions, and an identification key, Proceedings of the Entomological Society of Washington, 103: 207 - 216.", "Heimdal, D. P., R. E. DeWalt, & T. F. Wilton. 2004. Annotated checklist of the stoneflies (Plecoptera) of Iowa. Proceedings of the Entomological Society of Washington, 106: 761 - 778.", "Stark, B. P. 2004. Perlidae (The Stones). Pages 61 - 148. In: Stark, B. P. & B. J. Armitage (editors). The stoneflies (Plecoptera) of eastern North America. Volume II. Chloroperlidae, Perlidae, and Perlodidae (Perlodinae). Bulletin of the Ohio Biological Survey, New Series, Volume 14. Ohio Biological Society, Columbus, Ohio. 192 pp.", "Grubbs, S. A. 2004. Studies on Indiana stoneflies (Plecoptera), with an annotated and revised state checklist. Proceedings of the Entomological Society of Washington, 106: 865 - 876."]}
Non-equilibrium dynamics of Ising models with decoherence: an exact solution
Creators: name: Foss-Feig, Michael
name: Hazzard, Kaden R. A.
name: Bollinger, John J.
name: Rey, Ana Maria
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The interplay between interactions and decoherence in many-body systems is of fundamental importance in quantum physics: Decoherence can degrade correlations, but can also give rise to a variety of rich dynamical and steady-state behaviors. We obtain an exact analytic solution for the non-equilibrium dynamics of Ising models with arbitrary interactions and subject to the most general form of local Markovian decoherence. Our solution shows that decoherence affects the relaxation of observables more than predicted by single-particle considerations. It also reveals a dynamical phase transition, specifically a Hopf bifurcation, which is absent at the single-particle level. These calculations are applicable to ongoing quantum information and emulation efforts using a variety of atomic, molecular, optical, and solid-state systems.
description: 8 pages, 5 figures, citations added