cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Surface melting of nanoscopic epitaxial films
Creators: name: Muller, P.
name: Kern, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By introducing finite size surface and interfacial excess quantities, interactions between interfaces are shown to modify the usual surface premelting phenomenon. It is the case of surface melting of a thin solid film s deposited on a planar solid substrate S. More precisely to the usual wetting condition of the solid s by its own melt l, necessary for premelting (wetting factor F<0), is adjoined a new quantity G describing the interactions of the l/s interface with the s/S interface. When G>0 this interface attraction boosts the premelting so that a two stage boosted surface premelting is foreseen: a continuous premelting, up to roughly half the deposited film, is followed by an abrupt first order premelting. When G<0 these interfaces repell each other so that premelting is refrained and the film remains partly solid above the bulk melting point (overheating) what is called astride melting. Elastic stress modifies both types of melting curves. Bulk and surface stresses have to be distinguished.
description: 65 pages, 16 figures
title: Vig, Albanien. Die Arbeiten der Jahre 2015 und 2017
Creators: name: Oettel, Andreas
name: Hoxha, Gëzim
Publisher: name: Deutsches Archäologisches Institut
Year: 2018

description: e-Forschungsberichte, Faszikel 1 (2018)
description: The late antique castrum of Vig in Northern Albania is located in the hinter­land of the Adriatic town of Lissus/Lezha, which was connected by a road to the city of Naissus (Niš/Serbia), as also revealed in the Tabula Peutingeriana map. The site of the castrum is situated in the archaeologically unexplored valley of Gjader. It has so far been assumed that it’s function was intended for the road’s security. However, in this context it has not been taken into consideration that in early modern times silver mines were exploited in the mountainous region northeast of Lissus as well as copper mines in the 20th century, as also reported by early explorers. The castrum’s primary func­tion had possibly served the control of the river valley and the area’s ore mining activities.
Insights into the actions of angiotensin-1 receptor (AT1R) inverse agonists: Perspectives and implications in COVID-19 treatment
Creators: name: Heimfarth, Luana
name: Dos Santos, Mario Adriano
name: Barreto-Filho, José Augusto
name: Barreto, André Sales
name: Macedo, Fabrício Nunes
name: Araújo, Adriano Antunes De Souza
name: Martins-Filho, Paulo
name: Scotti, Marcus Tullius
name: Scotti, Luciana
name: Quintans-Júnior, Lucindo José
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: SARS-CoV-2
angiotensin-converting enzyme
drugs
renin-angiotensin-aldosterone system

description: New coronavirus SARS-CoV-2 (COVID-19) has caused chaos in health care systems. Clinical manifestations of COVID-19 are variable, with a complex pathophysiology and as yet no specific treatment. It has been suggested that the renin-angiotensin-aldosterone system has a possible role in the severity of cases and the number of deaths. Our hypothesis is that drugs with inverse agonist effects to the angiotensin-1 receptor can be promising tools in the management of patients with COVID-19, possibly avoiding complications and the poor evolution in some cases. Any risk factors first need to be identified, and the most appropriate time to administer the drugs during the course of the infection also needs to be established. Several angiotensin receptor blockers (ARB) have a favorable profile and are important candidates for the treatment of COVID-19. In this review we discussed a set of compounds with favorable profile for COVID-19 treatment, including azilsartan, candesartan, eprosartan, EXP3174, olmesartan, telmisartan, and valsartan. They are effective as inverse agonists and could reduce the “cytokine storm” and reducing oxidative stress. As COVID-19 disease has several evolution patterns, the effectiveness of ARB therapy would be related to infection "timing", patient risk factors, previous use of ARBs, and the specific molecular effects of an ARB. However, controlled studies are needed to identify whether ARBs are beneficial in the treatment of patients with COVID-19.
description: EXCLI Journal; 20:Doc252; ISSN 1611-2156
General Operator Solutions and BRST Quantization of Superstrings in the pp-Wave with Torsion
Creators: name: Chizaki, Yoichi
name: Yahikozawa, Shigeaki
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We completely accomplish the canonically covariant quantization of Ramond-Neveu-Schwarz (RNS) superstrings in the pp-wave background with a non-zero flux of the NS-NS antisymmetric two-form field. Here this flux is equivalent to a nonvanishing torsion. In this quantization, general operator solutions, which satisfy the entire equation of motion and all the canonical (anti)commutation relations, play an important role. The whole of covariant string coordinates and fermions can be composed of free modes. Moreover, employing covariant free-mode representations, we calculate the anomaly in the super-Virasoro algebra and determine the number of dimensions of spacetime and the ordering constant from the nilpotency condition of the BRST charge in the pp-wave background with the flux.
description: 31 pages
The spatially offset quasar E1821+643: New evidence for gravitational recoil
Creators: name: Jadhav, Yashashree
name: Robinson, Andrew
name: Almeyda, Triana
name: Curran, Rachel
name: Marconi, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A galaxy merger is expected to cause the formation of a supermassive black hole (SMBH) binary, which itself eventually coalesces through the anisotropic emission of gravitational waves. This may result in the merged SMBH receiving a recoil kick velocity ~100 - 1000 km/s, causing it to oscillate in the gravitational potential of the host galaxy. The luminous quasar E1821+643, identified as an SMBH recoil candidate via spectropolarimetry observations, shows Doppler shifting of the broad emission lines in direct and scattered light, consistent with a relative velocity of 2100 km/s between the quasar nucleus and host galaxy. In this paper, we attempt to detect the expected spatial displacement using a combination of optical spectroastrometry and Hubble Space Telescope (HST) narrow band images. The spectroastrometry reveals a relative spatial displacement between the quasar nucleus and the gas emitting the [OIII]4959,5007 lines of ~130mas (~580pc) to the North-West. Our HST images resolve the [OIII] emission on sub-arcsecond scales, showing that it is asymmetrically distributed, extending to radial distances ~0.5 - 0.6" from the nucleus in a wide arc running from the North-East around to the West. A simulated spectroastrometry observation based on the HST [OIII] image indicates that only a small fraction of the measured displacement can be attributed to the asymmetric [OIII] emission. This displacement therefore appears to be a real spatial offset of the quasar nucleus with respect to the narrow-line region, presumed to be located at the host galaxy center, further supporting the interpretation that a post-merger gravitational recoil of the SMBH has occurred in E1821+643.
description: 12 pages, 15 figures, Accepted for publication in MNRAS
Temperature dependent angular dispersions of surface acoustic waves on GaAs
Creators: name: Powlowski, Mats
name: Sfigakis, Francois
name: Kim, Na Young
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We measure the phase velocities of surface acoustic waves (SAWs) propagating at different crystal orientations on (001)-cut GaAs substrates and their temperature dependance. We design and fabricate sets of interdigital transducers (IDTs) to induce 4 μm SAWs via the inverse piezoelectric (PZE) effect between the PZE [110] direction (set as θ = 0°) and the non-PZE [100] direction (θ = 45°) on GaAs. We also prepare ZnO film sputtered GaAs substrates in order to launch SAWs efficiently by IDTs even in the non-PZE direction. We quantify acoustic velocities between 1.4 and 300 K from the resonant frequencies in the S11 parameter using a network analyzer. We observe parabolic velocity-temperature trends at all θ-values both on GaAs and ZnO/GaAs substrates. Below 200 K, in ZnO/GaAs substrates slower SAW modes appear around the [110] direction, which are unseen at RT.
description: 7 pages, 3 figures
Jupiter's X-ray aurora during UV dawn storms and injections as observed by XMM-Newton, Hubble, and Hisaki
Creators: name: Wibisono, A. D.
name: Branduardi-Raymont, G.
name: Dunn, W. R.
name: Kimura, T.
name: Coates, A. J.
name: Grodent, D.
name: Yao, Z. H.
name: Kita, H.
name: Rodriguez, P.
name: Gladstone, G. R.
name: Bonfond, B.
name: Haythornthwaite, R. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present results from a multiwavelength observation of Jupiter's northern aurorae, carried out simultaneously by XMM-Newton, the Hubble Space Telescope (HST), and the Hisaki satellite in September 2019. HST images captured dawn storms and injection events in the far ultraviolet aurora several times during the observation period. Magnetic reconnection occurring in the middle magnetosphere caused by internal drivers is thought to start the production of those features. The field lines then dipolarize which injects hot magnetospheric plasma from the reconnection site to enter the inner magnetosphere. Hisaki observed an impulsive brightening in the dawnside Io plasma torus (IPT) during the final appearance of the dawn storms and injection events which is evidence that a large-scale plasma injection penetrated the central IPT between 6-9 RJ (Jupiter radii). The extreme ultraviolet aurora brightened and XMM-Newton detected an increase in the hard X-ray aurora count rate, suggesting an increase in electron precipitation. The dawn storms and injections did not change the brightness of the soft X-ray aurora and they did not "switch-on" its commonly observed quasi-periodic pulsations. Spectral analysis of the X-ray aurora suggests that the precipitating ions responsible for the soft X-ray aurora were iogenic and that a powerlaw continuum was needed to fit the hard X-ray part of the spectra. The spectra coincident with the dawn storms and injections required two powerlaw continua to get good fits.
description: 14 pages, 7 figures in main text, 6 figures in the appendices. Accepted in MNRAS 28 July 2021
title: Afghanistan. Antiker Bergbau und Kulturelles Erbe. Die Arbeiten der Jahre 2013 bis 2017
Creators: name: Boroffka, Nikolaus
name: Steiniger, Daniel
Publisher: name: Deutsches Archäologisches Institut
Year: 2018

description: e-Forschungsberichte, Faszikel 1 (2018)
description: The DFG-Project “RESAF – Ressources and antique mining in Afghanistan”, began in June 2017 as a continuation of the research supported so far by the German Foreign Ministry. The development of the geo information systems (GIS) and the database for archaeometallurgy and mining in Afghanistan are basic aims of the project. Moreover, the documentation and protection of endangered cultural heritage sites and archaeological finds are central topics, as well as capacity building in workshops and trai­nee programmes for Afghani colleagues held in Germany, are crucial to support sustainable local archaeological work and heritage management in the country.
Advice
Creators: name: Couper-Kuhlen, Elizabeth
name: Thompson, Sandra A.
Publisher: name: OSF
Year: 2022
Subjects: Conversation Analysis
Encyclopedia
Ethnomethodology
Interactional Linguistics

description: Giving advice, according to one commonly accepted understanding, is an action type advocating a future action or activity to be carried out by the recipient that will be of primary benefit to the recipient (Clayman & Heritage 2014; Couper-Kuhlen 2014).
title: Landschaftsarchäologie am DAI. Die Arbeiten der Jahre 2016 und 2017
Creators: name: Schultze, Erdmute
name: Neumann, Daniel
Publisher: name: Deutsches Archäologisches Institut
Year: 2018

description: e-Forschungsberichte, Faszikel 1 (2018)
description: Since landscape archaeology research is involved in many projects of the institute the working group for landscape archaeology at the German Archaeological Institute (LAAD) has continued their meetings in 2016 and 2017. The fifth LAAD-meeting consisted of a methodological workshop about low- or noninvasive methods of prospection held in Frankfurt and practical field work on an archaeological site in Oberbrechen (Hesse). There, participants could use geomagnetic measurement equipment or a drone and prepare a driving core. The sixth LAAD-meeting took place in cooperation with the DLR Earth Observation Center (EOC) in Oberpfaffenhofen and was focused on the possibilities for using of earth observation data for archaeological research and heritage management. In 2017 the seventh LAAD-Workshop held in Berlin was concentrated on drawbacks and opportunities of geomagnetic prospections.
Counsellor trainee reports : effective and ineffective educator behaviours
Creators: name: Finlayson, Janet Betty
Publisher: name: University of British Columbia
Year: 2010

description: Critical incidents (Flanagan, 1954) reported by counsellor trainees were used to investigate which educator behaviours had facilitated or hindered students' professional growth. The resulting trainee reports were categorized and subsequently compared to the domain of effective educator behaviours identified in the literature. Moreover, the investigator questioned whether incidents reported by trainees would occur in supervised settings and in settings related to supervision (e.g. courses and interviews with educators). Critical incident interviews lasting one-half hour were conducted with a volunteer sample of 24 counsellor trainees (6 males and 18 females) enrolled in a masters-level counselling program at a large university situated in an urban center on Canada's west coast. In all, 84 incidents were reported; 77% of the incidents described effective or facilitative educator behaviours and 23% described ineffective or hindering behaviours. In addition, it was found that 53% of incidents occurred in a supervised setting, 36% in a classroom setting, 11% in a private interview, and 1% in a social setting. Five basic categories of incidents were found: Category I: Teaches New Counselling Skills, Techniques, and Theories to Trainees; Category II: Gives Concrete Feedback about Trainees' Counselling Behaviours within the Context of a Facilitative Relationship; Category III: Models by Demonstrating Counselling Interventions with Trainees as Clients; Category IV: Offers Facilitative Conditions (i.e. Genuineness, Respect) to Trainees; and Category V: Encourages Trainee Self-Exploration within the Context of a Facilitative Relationship. These categories demonstrated acceptable levels of reliability. The findings suggest that integrative approaches to counsellor training (i.e. combined didactic and experiential approaches) are more effective than unitary theoretical approaches.
POLAR Investigation of the Sun - POLARIS
Creators: name: Appourchaux, T.
name: Liewer, P.
name: Watt, M.
name: Alexander, D.
name: Andretta, V.
name: Auchere, F.
name: D'Arrigo, P.
name: Ayon, J.
name: Corbard, T.
name: Fineschi, S.
name: Finsterle, W.
name: Floyd, L.
name: Garbe, G.
name: Gizon, L.
name: Hassler, D.
name: Harra, L.
name: Kosovichev, A.
name: Leibacher, J.
name: Leipold, M.
name: Murphy, N.
name: Maksimovic, M.
name: Martinez-Pillet, V.
name: Matthews, B. S. A.
name: Mewaldt, R.
name: Moses, D.
name: Newmark, J.
name: Regnier, S.
name: Schmutz, W.
name: Socker, D.
name: Spadaro, D.
name: Stuttard, M.
name: Trosseille, C.
name: Ulrich, R.
name: Velli, M.
name: Vourlidas, A.
name: Wimmer-Schweingruber, C. R.
name: Zurbuchen, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The POLAR Investigation of the Sun (POLARIS) mission uses a combination of a gravity assist and solar sail propulsion to place a spacecraft in a 0.48 AU circular orbit around the Sun with an inclination of 75 degrees with respect to solar equator. This challenging orbit is made possible by the challenging development of solar sail propulsion. This first extended view of the high-latitude regions of the Sun will enable crucial observations not possible from the ecliptic viewpoint or from Solar Orbiter. While Solar Orbiter would give the first glimpse of the high latitude magnetic field and flows to probe the solar dynamo, it does not have sufficient viewing of the polar regions to achieve POLARIS' primary objective : determining the relation between the magnetism and dynamics of the Sun's polar regions and the solar cycle.
description: 23 pages, 14 figures, 4 tables, Accepted by Experimental Astronomy
title: Göbekli Tepe, Türkei. Modifizierte menschliche Schädelfragmente vom Göbekli Tepe belegen eine neue Form Neolithischen Schädelkultes. Erste Ergebnisse der anthropologischen Untersuchungen der menschlichen Skelettreste aus den Grabungen 1997–2014
Creators: name: Gresky, Julia
name: Haelm, Juliane
name: Clare, Lee
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 2 (2017)
description: The Stone Age ritual site at Göbekli Tepe in Southeast Turkey has intrigued scientists for more than two decades. The monumental structures, which were first erected here some 11.000 years ago, feature fabulous animal depictions in low and high relief, as well as representations of humans, one of which is missing its head. These images testify, among other things, to a clear ritual function of the buildings. The intentionally modified fragments of three human skulls, which were discovered in close association with the edifices, are strongly suggestive of a new and previously unknown type of mortuary cult at this time.
A Revised SALT2 Surface for Fitting Type Ia Supernova Light Curves
Creators: name: Taylor, G.
name: Lidman, C.
name: Tucker, B. E.
name: Brout, D.
name: Hinton, S. R.
name: Kessler, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a revised SALT2 surface (`SALT2-2021') for fitting the light curves of Type Ia supernovae (SNe Ia), which incorporates new measurements of zero-point calibration offsets and Milky Way extinction. The most notable change in the new surface occurs in the UV region. This new surface alters the distance measurements of SNe~Ia, which can be used to investigate the nature of dark energy by probing the expansion history of the Universe. Using the revised SALT2 surface on public data from the first three years of the Dark Energy Survey Supernova Program (combined with an external low-$z$ SNe Ia sample) and combining with cosmic microwave background constraints, we find a change in the dark energy equation of state parameter, $Δw = 0.015 \pm 0.004$. This result highlights the continued importance of controlling and reducing systematic uncertainties, particularly with the next generation of supernova analyses aiming to improve constraints on dark energy properties.
PAHs in Comets: An Overview
Creators: name: Li, Aigen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Polycyclic aromatic hydrocarbon (PAH) molecules, ubiquitously seen in the interstellar medium (ISM) of our own and external galaxies, might have been incorporated into comets if they are formed from relatively unprocessed interstellar matter. The detection of PAHs in comets would be an important link between the ISM and comets. This review compiles our current knowledge on cometary PAHs, based on ground-based and space-borne observations of infrared vibrational and ultraviolet fluorescence spectra of comets, and laboratory analysis of interplanetary dust particles possibly of cometary origin and cometary samples returned to Earth by the Stardust spacecraft. The latter provided the most unambiguous evidence for the presence of PAHs in cometary nuclei.
description: 15 pages, 8 figures; invited review article, in: "Deep Impact as a World Observatory Event -- Synergies in Space, Time, and Wavelength", Kaufl, H.U., & Sterken, C. (eds.), ESO Astrophys. Symp., in press
Hoplocryptanthus Leme, S. Heller & Zizka 2017
Creators: name: Leme, Elton M. C.
name: Ribeiro, Otávio B. C.
name: Souza, Fernanda Vidigal D.
name: Souza, Everton Hilo De
name: Kollmann, Ludovic J. C.
name: Fontana, André P.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Poales
Bromeliaceae
Hoplocryptanthus

description: 3. Hoplocryptanthus (Mez, 1981: 202) Leme, S. Heller & Zizka (2017: 62)
Holocryptanthus was considered a subgenus of Cryptanthus and its distinct generic status was proposed by Leme et al. (2017). It comprises eight species endemic to the central-southeast region of Minas Gerais state, growing exclusively in Campos Rupestres vegetation mostly in the Iron Quadrangle (Quadrilátero Ferrífero) area, south of the Espinhaço Range, with some southwestern extensions towards the county of São Tomé das Letras. Hoplocryptanthus has a more inland geographycal distribution compared to other Cryptanthoid genera (e.g., Cryptanthus), growing in areas from 500 to 1834 m elevation.
The stemless to long caulescent plants of Hoplocryptanthus are saxicolous or epilithic, homogamous, propagating by short axillary shoots. The inflorescence is compound or rarely simple, sessile and corymbose, with sessile or short pedicellate fragrant flowers. The sepals and petals are connate at the base. The petals are unappendaged, forming at the base a distinct common structure with filaments and style, and the corolla is of the open, fan-like type. The stigma is of the cylindric-distent type, pollen are medium-sized, the fruits are small with persistent sepals usually slightly shorter to equalling the fruit length, or rarely up to 1.4 times the fruit length, producing a large number of small-sized seeds.
description: Published as part of Leme, Elton M. C., Ribeiro, Otávio B. C., Souza, Fernanda Vidigal D., Souza, Everton Hilo De, Kollmann, Ludovic J. C. & Fontana, André P., 2020, Miscellaneous new species in the " Cryptanthoid complex " (Bromeliaceae: Bromelioideae) from Eastern Brazil, pp. 157-202 in Phytotaxa 430 (3) on page 177, DOI: 10.11646/phytotaxa.430.3.2, http://zenodo.org/record/13876272
Terahertz Parametric Gain in Semiconductor Superlattices
Creators: name: Hyart, Timo
name: Shorokhov, Alexey V.
name: Alekseev, Kirill N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a high-frequency response of electrons in a single miniband of superlattice subject to dc and ac electric fields. Action of ac electric field causes oscillations of electron's effective mass in miniband, which result in a parametric resonance. We have established a theoretical feasibility of phase-sensitive parametric amplification at the resonance. The parametric amplification does not require operation in conditions of negative differential conductance. Therefore a formation of destructive domains of high electric field inside the superlattice can be prevented. Here we concentrate on the parametric up- and down-conversion of electromagnetic radiation from available frequencies to desirable THz frequency range.
description: Submitted to Conference Digest of IRMMW-THz 2007 Cardiff, 2 pages, 3 figures
Beauty photoproduction using decays into electrons at HERA
Creators: name: ZEUS Collaboration
name: Chekanov, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Photoproduction of beauty quarks in events with two jets and an electron associated with one of the jets has been studied with the ZEUS detector at HERA using an integrated luminosity of 120pb^-1. The fractions of events containing b quarks, and also of events containing c quarks, were extracted from a likelihood fit using variables sensitive to electron identification as well as to semileptonic decays. Total and differential cross sections for beauty and charm production were measured and compared with next-to-leading-order QCD calculations and Monte Carlo models.
description: 39 pages, 14 figures, Phys Rev D version
Dark matter from an even lighter QCD axion: trapped misalignment
Creators: name: Di Luzio, Luca
name: Gavela, Belen
name: Quilez Lasanta, Pablo
name: Ringwald, Andreas
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021

description: We show that dark matter can be accounted for by an axion that solves the strong CP problem, but is much lighter than usual due to a $Z_\mathcal{N}$ symmetry. The whole mass range from the canonical QCD axion down to the ultra-light regime is allowed, with $3\le\mathcal{N}\lesssim65$. This includes the first proposal of a 'fuzzy dark matter' QCD axion with $m_a\sim10^{-22}$ eV. A novel misalignment mechanism occurs - trapped misalignment - due to the peculiar temperature dependence of the $Z_{\mathcal{N}}$ axion potential. The dark matter relic density is enhanced because the axion field undergoes two stages of oscillations: it is first trapped in the wrong minimum, which effectively delays the onset of true oscillations. Trapped misalignment is more general than the setup discussed here, and may hold whenever an extra source of Peccei-Quinn breaking appears at high temperatures. Furthermore, it will be shown that trapped misalignment can dynamically source the recently proposed kinetic misalignment mechanism. All the parameter space is within tantalizing reach of the experimental projects for the next decades. For instance, even Phase I of CASPEr-Electric could discover this axion.
Constraining the AGN Contribution in a Multiwavelength Study of Seyfert Galaxies
Creators: name: Meléndez, M.
name: Kraemer, S. B.
name: Schmitt, H. R.
name: Crenshaw, D. M.
name: Deo, R. P.
name: Mushotzky, R. F.
name: Bruhweiler, F. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the relationship between the high- and low-ionization [O IV] lambda 25.89 micron, [Ne III] lambda 15.56 micron and [Ne II] lambda 12.81 micron emission lines with the aim of constraining the active galactic nuclei (AGN) and star formation contributions for a sample of 103 Seyfert galaxies. We used the [O IV] and [Ne II] emission as tracers for the AGN power and star formation to investigate the ionization state of the emission-line gas. We find that Seyfert 2 galaxies have, on average, lower [O IV]/[Ne II] ratios than those of Seyfert 1 galaxies. This result suggests two possible scenarios: 1) Seyfert 2 galaxies have intrinsically weaker AGN, or 2) Seyfert 2 galaxies have relatively higher star formation rates than Seyfert 1 galaxies. We estimate the fraction of [Ne II] directly associated with the AGN and find that Seyfert 2 galaxies have a larger contribution from star formation, by a factor of ~1.5 on average, than what is found in Seyfert 1 galaxies. Using the stellar component of [Ne II] as a tracer of the current star formation we found similar star formation rates in Seyfert 1 and Seyfert 2 galaxies. We examined the mid- and far-infrared continua and find that [Ne II] is well correlated with the continuum luminosity at 60 micron and that both [Ne III] and [O IV] are better correlated with the 25 micron luminosities than with the continuum at longer wavelengths, suggesting that the mid-infrared continuum luminosity is dominated by the AGN, while the far-infrared luminosity is dominated by star formation. Overall, these results test the unified model of AGN, and suggest that the differences between Seyfert galaxies cannot be solely due to viewing angle dependence.
description: Accepted for publication in The Astrophysical Journal
title: Aigai, Türkei. NekroPergEol – Oberflächenuntersuchungen in den Nekropolen der aiolischen Polis Aigai. Die Arbeiten des Jahres 2016
Creators: name: Kelp, Ute
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 2 (2017)
description: The necropoleis and the great tumuli of Pergamon and the Aeolian cities represent a valuable archaeological heritage for understanding the political, social and cultural dynamics in a key region of Hellenistic Asia Minor. Aiming to enhance their research in funerary archaeology a three-year collaborative French-German programme was created (NekroPergEol). In 2016, the fieldwork lasted one month and was focussed on the intensive survey in the necropolis of the Aeolian city of Aigai. The French-German-Turkish-Italian team documented the peri-urban areas (about 40 %) of the main Northeast necropolis and worked on the necropolis findings of the excavations in 2005 and 2015.
Random resistor network model of minimal conductivity in graphene
Creators: name: Cheianov, V. V.
name: Falko, V. I.
name: Altshuler, B. L.
name: Aleiner, I. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Transport in undoped graphene is related to percolating current patterns in the networks of {\em N-} and {\em P}-type regions reflecting the strong bipolar charge density fluctuations. Transmissions of the {\em P-N} junctions, though small, are vital in establishing the macroscopic conductivity. We propose a random resistor network model to analyze scaling dependencies of the conductance on the doping and disorder, the quantum magnetoresistance and the corresponding dephasing rate.
description: 4 pages, 3 figures
Antibacterial mechanisms of metal nanoparticles By Mansoure Hosseini
Creators: name: Hosseini, Mansoure
Publisher: name: figshare
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: 60599 Microbiology not elsewhere classified
subject: 60503 Microbial Genetics
subject: 60504 Microbial Ecology
subject: Medicine

description: Metal nanoparticles (MNs) are the center of attention in different branches of applied sciences as they have unique features in comparison with bulk ones. They are very effective, low cost and stable antibacterial agents which resisting them requires many mutations. Metal nanoparticles first anchor to the bacterial cell wall and interact with thiol and phosphorus groups of respiratory enzymes resulting in their inactivation. These nanostructures can penetrate into the cell via various mechanisms that distort cell integrity leading to cell content leakage followed with weakening of proton motive force functioning and inhibition of ATP synthesis. After penetration, MNs implement denaturation in DNA and RNA molecular structures hinder cellular replication, transcription and translation mechanisms. Metal nanoparticles induce ROS generation which has a detrimental effect on cell viability. Beside, sum of these effects and mechanisms may lead to inhibition of bacterial cell division, cell disruption and the decline of bacterial populations.
Content Delivery over Broadcast Erasure Channels with Distributed Random Cache
Creators: name: Vahid, Alireza
name: Lin, Shih-Chun
name: Wang, I-Hsiang
name: Lai, Yi-Chun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We study the content delivery problem between a transmitter and two receivers through erasure links, when each receiver has access to some random side-information about the files requested by the other user. The random side-information is cached at the receiver via the decentralized content placement. The distributed nature of receiving terminals may also make the erasure state of two links and indexes of the cached bits not perfectly known at the transmitter. We thus investigate the capacity gain due to various levels of availability of channel state and cache index information at the transmitter. More precisely, we cover a wide range of settings from global delayed channel state knowledge and a non-blind transmitter (i.e. one that knows the exact cache index information at each receiver) all the way to no channel state information and a blind transmitter (i.e. one that only statistically knows cache index information at the receivers). We derive new inner and outer bounds for the problem under various settings and provide the conditions under which the two match and the capacity region is characterized. Surprisingly, for some interesting cases the capacity regions are the same even with single-user channel state or single-user cache index information at the transmitter.
Phrase
Creators: name: Thompson, Sandra A.
Publisher: name: OSF
Year: 2022
Subjects: Conversation Analysis
Encyclopedia
Ethnomethodology
Interactional Linguistics

description: In linguistics, a phrase is generally understood as a sequence of independently-recognized words. Evidence from child language acquisition, distribution in corpora, and language change, shows that phrases are stored and retrieved as grammatical units (Bybee 2010). Phrases are of interest both structurally and interactionally.
title: Madīnat az-Zahrāʾ, Spanien. Die Arbeiten des Jahres 2017
Creators: name: Arnold, Felix
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 2 (2017)
description: Madīnat az-Zahrāʾ was the capital of the 10th century Umayyad caliphate in al-Andalus and is today one of the most important sites of Islamic culture in the west. A new project is dedicated to the investigation of the Plaza de Armas, the main public square of the caliphal city. The aim of the first season of field work was the investigation of the Great Portico, which delimits the Plaza de Armas in the west and forms the façade of the caliphal palace. The building history of the portico was clarified, as well as the reconstruction of the portico based on building elements found during the excavation of the portico in 1975. In addition, a geophysical survey was conducted in the area to the east of the Plaza de Armas, in order to study the eastern limit of the plaza. The dimension and structure of several buildings could be determined. In addition a geomagnetic survey was conducted in the garden area of the palace.
An intense state of hard X-ray emission of Cyg X-1 observed by INTEGRAL coincident with TeV measurements
Creators: name: Malzac, J.
name: Lubinski, P.
name: Zdziarski, A. A.
name: Bel, M. Cadolle
name: Turler, M.
name: Laurent, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present INTEGRAL light curves and spectra of the black-hole binary Cyg X-1 during a bright event that occurred in 2006 September, and which was simultaneous with a detection at 0.15-1 TeV energies by the MAGIC telescope. We analyse the hard X-ray emission from 18 to 700 keV with the INTEGRAL data taken on 2006 September 24-26. We present the light curves and fit the high energy spectrum with various spectral models. Despite variations in the flux by a factor of ~2 in the the 20-700 keV energy band, the shape of the energy spectrum remained remarkably stable. It is very well represented by an e-folded power law with the photon index of 1.4 and a high energy cut-off around 130-140 keV. The spectrum is also well described by thermal Comptonisation including a moderate reflection component, with a reflectionamplitude R around 0.4. The temperature of the hot Comptonising electrons is ~70 keV and their Thomson optical depth is ~2.5. These spectral properties are typical of those observed in the low/hard state. This shows that Cyg X-1 may stay in the low hard state at least up to the flux level of 2 Crab, which corresponds to ~2-3 percent of the Eddington luminosity. It is the first time a persistent high-mass black-hole binary is observed at a few percent of the Eddington luminosity with a stable low/hard state spectrum over a period of a few days. The TeV detection coincides with the peak of a small X-ray flare just after a very fast rise in hard X-ray flux. In contrast, the source remained undetected by MAGIC at the peak of a larger X-ray flare occurring one day later and corresponding to the maximum of the X-ray luminosity of the whole outburst. We do not find any obvious correlation between the X-ray and TeV emission.
description: 8 pages, 8 figures, accepted for publication in Astronomy and Astrophysics (major changes following the referee's comments)
Quiver Chern-Simons theories and crystals
Creators: name: Imamura, Yosuke
name: Kimura, Keisuke
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider N=2 quiver Chern-Simons theories described by brane tilings, whose moduli spaces are toric Calabi-Yau 4-folds. Simple prescriptions to obtain toric data of the moduli space and a corresponding brane crystal from a brane tiling are proposed.
description: 16 pages, 7 figures, references added
The PDF perspective on the tracer-matter connection: Lagrangian bias and non-Poissonian shot noise
Creators: name: Friedrich, Oliver
name: Halder, Anik
name: Boyle, Aoife
name: Uhlemann, Cora
name: Britt, Dylan
name: Codis, Sandrine
name: Gruen, Daniel
name: Hahn, ChangHoon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the connection of matter density and its tracers from the PDF perspective. One aspect of this connection is the conditional expectation value $\langle δ_{\mathrm{tracer}}|δ_m\rangle$ when averaging both tracer and matter density over some scale. We present a new way to incorporate a Lagrangian bias expansion of this expectation value into standard frameworks for modelling the PDF of density fluctuations and counts-in-cells statistics. Using N-body simulations and mock galaxy catalogs we confirm the accuracy of this expansion and compare it to the more commonly used Eulerian parametrization. For halos hosting typical luminous red galaxies, the Lagrangian model provides a significantly better description of $\langle δ_{\mathrm{tracer}}|δ_m\rangle$ at second order in perturbations. A second aspect of the matter-tracer connection is shot-noise, \ie the scatter of tracer density around $\langle δ_{\mathrm{tracer}}|δ_m\rangle$. It is well known that this noise can be significantly non-Poissonian and we validate the performance of a more general, two-parameter shot-noise model for different tracers and simulations. Both parts of our analysis are meant to pave the way for forthcoming applications to survey data.
description: 20 pages, submitted to MNRAS, numerical tools available at https://github.com/OliverFHD/CosMomentum
CP violation at one loop in the polarization-independent chargino production in e+e- collisions
Creators: name: Rolbiecki, K.
name: Kalinowski, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently Osland and Vereshagin noticed, based on sample calculations of some box diagrams, that in unpolarised e+e- collisions CP-odd effects in the non-diagonal chargino-pair production process are generated at one-loop. Here we perform a full one-loop analysis of these effects and point out that in some cases the neglected vertex and self-energy contributions may play a dominant role. We also show that CP asymmetries in chargino production are sensitive not only to the phase of mu parameter in the chargino sector but also to the phase of stop trilinear coupling A_t.
description: 14 pages, 5 figures
Biosynthesis and antibacterial activity of gold nanoparticles coated with reductase enzymes
Creators: name: Hosseini, Mansoure
Publisher: name: figshare
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: 100703 Nanobiotechnology
subject: FOS: Nanotechnology

description: Potential of luminescent bacteria in production of metal nanoparticles has not been well evaluated up until now. These bacteria contain lux operon which is included of reductase enzymes, by increasing bacterial cell density, the expression of aldehyde synthetic enzymes elevate and enhance the yields of nanoparticles synthesis. Therefore, in this study extracellular synthesis of gold nanoparticles using natural occurring luminescent bacteria, VLA, VLB, VLC and genetically engineered luminescent bacteria, Pseudomonas putida KT2440 and Pseudomonas fluorescence OS8 has been successfully conducted. Nanoparticles were characterized and their antibacterial activity evaluated using microtiter plates at different concentrations against some hospital pathogenic bacteria .Biosynthetic gold nanoparticles produced in this study had maximum absorption at the ranges of 500 to 550 nanometer wavelengths. TEM images showed particle sizes between 10 to 50 nanometers and confirmed the success of purification process. The NPs were spherical and the FTIR analysis showed the existence of biomolecules on surface of purified nanoparticles that could be most probably related to reductase enzymes that is stabilized on nanoparticles surfaces. Further investigation on antibacterial properties of these novel nanoparticles which coated by reductase enzymes showed that any increase or decrease in antibacterial activity is depended on nanoparticles concentration.
Projective techniques with children : assessment through guided imagery, drawing, and post-drawing inquiry
Creators: name: Crandall, Joanne Margaret
Publisher: name: University of British Columbia
Year: 2010

description: Through the use of guided imagery, drawing, and a post-drawing inquiry, this study sought to explore the effectiveness of projective techniques for personality assessment with elementary school children. An extensive literature review reported on the use of guided imagery and drawing as projective techniques and their applicability with children. The literature supported the concept that projective methods are valid techniques to use with children because of their non-threatening nature and because of their ability to tap into the children's inner world. The guided imagery, drawing activity, and post-drawing inquiry were administered to twenty children, ranging in age from nine to twelve. The children were chosen by the elementary school counsellor and by the regular classroom teachers based upon their work and social behaviours in the classroom. Ten children were grouped as "positive copers" and ten children were grouped as "negative copers". The data from the study was evaluated both from a quantitative and a qualitative perspective. The Fischer Exact Probability Test noted the predominance of the presence of thorns in the drawing done by the "negative copers". This test also recorded that the raters had a high degree of agreement in the "picture only" sort and the "picture and statement combined" sort, but that there was no significant agreement in the "statements only" sort. From the qualitative perspective, it was observed that in the drawings the "positive copers" used characteristics of smiling faces, suns shining, and flowers blooming, while the "negative copers" showed characteristics of tangled branches, large thorns, and barred doors. In the statements accompanying the drawings, the "positive copers" used such metaphors as "I'm a happy rosebush", while the "negative copers" used words depicting death, loss, violence, neglect, hurt, and abandonment. Some exceptions were also noted. Two of the "positive copers" consistently indicated through the drawings and statements that they were dealing with some unresolved psychological pain, while two of the "negative copers" demonstrated creativity and some definite psychological strength. In summary, the qualitative approach to analysing the data yielded more useful information than the quantitative approach and the findings indicate that the combination of the guided imagery, drawing, and post-drawing inquiry as a projective method can be a useful tool for elementary school counselling.
A Game Theoretic Algorithm for Elite Customer Identification in Online Fashion E-Commerce
Creators: name: K, Chandramouli
name: A, Gopinath
name: Satyanarayana, Girish
name: Tallamraju, Ravindra Babu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Myntra is an online fashion e-commerce company based in India. At Myntra, a market leader in fashion e-commerce in India, customer experience is paramount and a significant portion of our resources are dedicated to it. Here we describe an algorithm that identifies eligible customers to enable preferential product return processing for them by Myntra. We declare the group of aforementioned eligible customers on the platform as elite customers. Our algorithm to identify eligible/elite customers is based on sound principles of game theory. It is simple, easy to implement and scalable.
Holographic generation of complex fields with spatial light modulators: application to quantum key distribution
Creators: name: Gruneisen, Mark T.
name: Miller, Warner A.
name: Dymale, Raymond C.
name: Sweiti, Ayman M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There has been considerable interest recently in the generation of azimuthal phase functions associated with photon orbital angular momentum (OAM) for high-dimensional quantum key distribution (QKD). The generation of secure quantum keys requires not only this pure phase basis, but also additional bases comprised of orthonormal superposition states formed from the pure states. These bases are also known as mutually unbiased bases (MUBs) and include quantum states whose wave functions are modulated in both phase and amplitude. While modulo 2πoptical path control with high-resolution spatial light modulators (SLMs) is well suited to creating the azimuthal phases associated with the pure states, it does not introduce the amplitude modulation associated with the MUB superposition states. Using computer-generated holography (CGH) with the Leith-Upatnieks approach to hologram recording however, both phase and amplitude modulation can be achieved. This paper presents a description of the OAM states of a 3-dimensional MUB system and analyzes the construction of these states via CGH with a phase modulating SLM. The effects of phase holography artifacts on quantum-state generation are quantified and a prescription for avoiding these artifacts by preconditioning the hologram function is presented. Practical effects associated with spatially isolating the first-order diffracted field are also quantified and a demonstration utilizing a liquid crystal SLM is presented.
description: 17 pages, 6 figures, LaTex