cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutral Gas Distributions and Kinematics of Five Blue Compact Dwarf Galaxies
Creators: name: van Zee, L.
name: Skillman, E. D.
name: Salzer, J. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of high spatial resolution HI observations of five intrinsically compact dwarf galaxies which are currently experiencing a strong burst of star formation. The HI maps indicate that these systems have a complex and clumpy interstellar medium. Unlike typical dwarf irregular galaxies, these Blue Compact Dwarf (BCD) galaxies exhibit strong central concentrations in their neutral gas distributions which may provide a clue to the origin of their strong star-burst activity. Furthermore, while all of the systems do appear to be rotating, based on observed velocity gradients, the kinematics are complex. All systems have non-ordered kinematic structure at some level; some of the extended gas is not necessarily kinematically connected to the main system. The observed gas distributions and kinematics place constraints on evolutionary scenarios for BCDs. Evolutionary links between BCDs, dwarf irregulars, and dwarf ellipticals have been postulated to explain their high star formation rates and low luminosity, low metallicity nature. The BCDs appear to have higher central mass concentrations in both gas and stellar content than the dwarf irregulars, indicating that evolutionary scenarios connecting these two classes will require mass redistribution. In addition, the fact that BCDs are rotationally supported systems indicates that BCDs are unlikely to evolve into dwarf ellipticals without substantial loss of angular momentum. Thus, while such evolutionary scenarios may still be possible with the aid of mergers or tidal interactions, the isolated nature of BCDs suggests that the majority of BCDs will not fade to become objects similar to the present day dwarf ellipticals.
description: 19 pages, 15 figures. To appear in AJ
How a well-adapting immune system remembers
Creators: name: Mayer, Andreas
name: Balasubramanian, Vijay
name: Walczak, Aleksandra M.
name: Mora, Thierry
Publisher: name: arXiv
Year: 2018
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: An adaptive agent predicting the future state of an environment must weigh trust in new observations against prior experiences. In this light, we propose a view of the adaptive immune system as a dynamic Bayesian machinery that updates its memory repertoire by balancing evidence from new pathogen encounters against past experience of infection to predict and prepare for future threats. This framework links the observed initial rapid increase of the memory pool early in life followed by a mid-life plateau to the ease of learning salient features of sparse environments. We also derive a modulated memory pool update rule in agreement with current vaccine response experiments. Our results suggest that pathogenic environments are sparse and that memory repertoires significantly decrease infection costs even with moderate sampling. The predicted optimal update scheme maps onto commonly considered competitive dynamics for antigen receptors.
FACTS AND IDEAS IN MODERN COSMOLOGY
Creators: name: Pietronero, Yu. V. Baryshev F. Sylos Labini M. Montuori L.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A review of the principles of observational testing of cosmological theories is given with a special emphasis on the distinction between observational facts and theoretical hypotheses. A classification of modern cosmological theories and possible observational tests for these theories is presented. The main rival cosmological models are analyzed from the point of view of observational testing of their initial hypothesis. A comparison of modern observational data with theoretical predictions is presented. In particular we discuss in detail the validity of the two basic assumptions of modern cosmology that are the Cosmological Principle and the Expanding Space Paradigm. It is found that classical paradigms need to be reanalyzed and that it is necessary to develop crucial cosmological tests to discriminate alternative theories.
description: 84 pages, latex, figures are available to F.S.L (sylos@roma1.infn.it). Accepted for publication in Vistas In astronomy, Vol.38, Part.4, 1994
Microarcsecond instability of the celestial reference frame
Creators: name: Sazhin, M. V.
name: Zharov, V. E.
name: Volynkin, A. V.
name: Kalinina, T. A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The fluctuation of the angular positions of reference extragalactic radio and optical sources under the influence of the irregular gravitational field of visible Galactic stars is considered. It is shown that these angular fluctuations range from a few up to hundreds of microarcseconds. This leads to a small rotation of the celestial reference frame. The nondiagonal coefficients of the rotation matrix are of the order of a microarcsecond. The temporal variation of these coefficients due to the proper motion of the foreground stars is of the order of one microsecond per 20 years. Therefore, the celestial reference frame can be considered inertial and homogeneous only to microarcsecond accuracy. Astrometric catalogues with microarcsecond accuracy will be unstable, and must be reestablished every 20 years.
description: 5 pages, 2 figures, accepted to MNRAS
Rosa indica Linnaeus, 1753, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1753
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa indica

description: Rosa indica, spec. nov.
9. Rosa subinermis, foliolis quinis subtus tomentosis: impari majori, stipulis obsoletis.
 Rosa chusan glabra, juniperi fructu. Pet. gaz. 56. t. 35. f.11.
 Habitat in China . ♄
 Rami inermes; rarius armati una alterave spina tenuissima versus folia vel in petiolis. Folia pinnata: Foliolis quinis, subtus tomentosis, supra glabris, serratis: extimo duplo majore. Pedunculi longi, nudi, simplices. Calyx incisus, laevis. Fructus magnitudine Sorbi aucupariae. Species Rosarum difficile distingvuntur, difficilius determinantur; mihi videtur naturam miscuisse plures vel lusu ex uno plures formasse; hinc qui paucas vidit species facilius eas distinguit, quam qui plures examinavit.
description: Published as part of Linnaeus, Carolus, 1753, Species plantarum: exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas, Stockholm :Laurentius Salvius on page 492, DOI: 10.5281/zenodo.3931989
Rosa cymosa Tratt.
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa cymosa

description: Rosa indica Linnaeus, Species Plantarum 1: 492. 1753.
"Habitat in China." RCN: 3745.
Lectotype (Heath in Calyx 2: 51. 1992): [icon] " Rosa Chusan, glabra, Juniperi fructu " in Petiver, Gazophyl. Nat.: 56, t. 35, f. 11. 1702-1709.
Current name: Rosa cymosa Tratt. (Rosaceae).
Note: This name has been widely treated as a nomen ambiguum. However, no proposal has been made for its formal rejection.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 799, DOI: 10.5281/zenodo.291971
Toward the construction of the general multi-cut solutions in Chern-Simons Matrix Models
Creators: name: Morita, Takeshi
name: Sugiyama, Kento
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In our previous work arXiv:1704.08675, we pointed out that various multi-cut solutions exist in the Chern-Simons (CS) matrix models at large-$N$ due to a curious structure of the saddle point equations. In the ABJM matrix model, these multi-cut solutions might be regarded as the condensations of the D2-brane instantons. However many of these multi-cut solutions including the ones corresponding to the condensations of the D2-brane instantons were obtained numerically only. In the current work, we propose an ansatz for the multi-cut solutions which may allow us to derive the analytic expressions for all these solutions. As a demonstration, we derive several novel analytic solutions in the pure CS matrix model and the ABJM matrix model. We also develop the argument for the connection to the instantons.
description: 43 pages, 16 figures, v2: published version, minor changes
Analyzing the Multiwavelength Spectrum and Variability of BL Lacertae During the July 1997 Outburst
Creators: name: Boettcher, M.
name: Bloom, S. D.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The multiwavelength spectrum of BL Lacertae during its July 1997 outburst is analyzed in terms of different variations of the homogeneous leptonic jet model for the production of high-energy radiation from blazars. We find that a two-component gamma-ray spectrum, consisting of a synchrotron self-Compton and an external Compton component, is required in order to yield an acceptable fit to the broadband spectrum. Our analysis indicates that in BL Lac, unlike other BL Lac objects, the broad emission line region plays an important role for the high-energy emission. Several alternative blazar jet models are briefly discussed. In the appendix, we describe the formalism in which the process of Comptonization of reprocessed accretion disk photons is treated in the previously developed blazar jet simulation code which we use.
description: Now accepted for publication in The Astronomical Journal. Significantly extended discussion w.r.t. original version. 3 Figures included using epsf.sty, rotate.sty
The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: II. Model of the Interplanetary Dust Cloud
Creators: name: Kelsall, T.
name: Weiland, J. L.
name: Franz, B. A.
name: Reach, W. T.
name: Arendt, R. G.
name: Dwek, E.
name: Freudenreich, H. T.
name: Hauser, M. G.
name: Moseley, S. H.
name: Odegard, N. P.
name: Silverberg, R. F.
name: Wright, E. L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The COBE Diffuse Infrared Background Experiment (DIRBE) was designed to search for the cosmic infrared background (CIB) radiation. Scattered light and thermal emission from the interplanetary dust (IPD) are major contributors to the diffuse sky brightness at most infrared wavelengths. Accurate removal of this zodiacal light foreground is a necessary step toward a direct measurement of the CIB. The zodiacal light foreground contribution in each of the 10 DIRBE wavelength bands ranging from 1.25 to 240 microns is distinguished by its apparent seasonal variation over the whole sky. This contribution has been extracted by fitting the brightness calculated from a parameterized physical model to the time variation of the all-sky DIRBE measurements over 10 months of observations. The model brightness is evaluated as the integral along the line of sight of the product of a source function and a three-dimensional dust density distribution function. The dust density distribution is composed of multiple components: a smooth cloud, three asteroidal dust bands, and a circumsolar ring near 1 A.U. By using a directly measurable quantity which relates only to the IPD cloud, we exclude other contributors to the sky brightness from the IPD model. Using the IPD model described here, high-quality maps of the infrared sky with the zodiacal foreground removed have been generated. Imperfections in the model reveal themselves as low-level systematic artifacts in the residual maps which correlate with components of the IPD. The most evident of these artifacts are located near the ecliptic plane in the mid-infrared, and are less than 2% of the zodiacal foreground brightness. Uncertainties associated with the model are discussed, including implications for the CIB search.
description: 39 pages using aaspp4.sty, tables 1-4 separate files, 8 JPEG figures, 13 GIF figures. Accepted for publication in Astrophysical Journal
All phase-space linear bosonic channels are approximately Gaussian dilatable
Creators: name: Lami, Ludovico
name: Sabapathy, Krishna Kumar
name: Winter, Andreas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We compare two sets of multimode quantum channels acting on a finite collection of harmonic oscillators: (a) the set of linear bosonic channels, whose action is described as a linear transformation at the phase space level; and (b) Gaussian dilatable channels, that admit a Stinespring dilation involving a Gaussian unitary. Our main result is that the set (a) coincides with the closure of (b) with respect to the strong operator topology. We also present an example of a channel in (a) which is not in (b), implying that taking the closure is in general necessary. This provides a complete resolution to the conjecture posed in Ref. [K.K. Sabapathy and A. Winter, Phys. Rev. A 95:062309, 2017]. Our proof technique is constructive, and yields an explicit procedure to approximate a given linear bosonic channel by means of Gaussian dilations. It turns out that all linear bosonic channels can be approximated by a Gaussian dilation using an ancilla with the same number of modes as the system. We also provide an alternative dilation where the unitary is fixed in the approximating procedure. Our results apply to a wide range of physically relevant channels, including all Gaussian channels such as amplifiers, attenuators, phase conjugators, and also non-Gaussian channels such as additive noise channels and photon-added Gaussian channels. The method also provides a clear demarcation of the role of Gaussian and non-Gaussian resources in the context of linear bosonic channels. Finally, we also obtain independent proofs of classical results such as the quantum Bochner theorem, and develop some tools to deal with convergence of sequences of quantum channels on continuous variable systems that may be of independent interest.
description: 33 pages, 2 figures; v2 has a simplified proof of one of the main results, Theorem 8
Rosa gallica Linnaeus 1762
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa gallica

description: Rosa millesia Linnaeus, Amoenitates Academicae 4: 484. 1759.
Type not designated.
Original material: none traced.
Current name: Rosa gallica L. (Rosaceae).
Note: Stearn (in Geck & Pressler, Festschr. Claus Nissen: 641. 1974) discussed this name, concluding that it probably relates to a form of R. gallica L.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 799, DOI: 10.5281/zenodo.291971
Reminiscences of Waldo Gifford Leland, 1955
Publisher: name: Columbia University
Year: 2021
Subjects: Historians
Historiography--United States
Local history

description: American Historical Association and AMERICAN HISTORICAL REVIEW; state and regional historical societies; Public Archives Commission; International Committee of Historical Sciences; origin of the American Council of Leaarned Societies and of the DICTIONARY OF AMERICAN BIOGRAPHY
title: Εφαρμογές Η/Υ στην επιπλοποιία
Creators: name: Avramouli, Dimitra
name: Karageorgos, Antonios
name: Ntintakis, Ioannis
name: Rapti, Elli
Publisher: name: Kallipos, Open Academic Editions
Year: 2016
Subjects: ΕΦΑΡΜΟΓΕΣ ΛΟΓΙΣΜΙΚΟΥ
ΕΠΙΠΛΟΠΟΙΙΑ
ΤΕΧΝΟΛΟΓΙΑ ΞΥΛΟΥ-ΕΠΙΠΛΟΥ
Software Applications
Furniture
Wood And Furniture Technology

description: Το παρόν βιβλίο απευθύνεται σε σπουδαστές και κατασκευαστές επίπλου έχοντας ως κύριο στόχο την εξοικείωση με τις βασικές έννοιες της Πληροφορικής και την παρουσίαση Εφαρμογών Λογισμικού χρήσιμων σε επιχειρήσεις που σχετίζονται με Επιπλοποιία και Ξυλοκατασκευές. Ιδιαίτερη έμφαση δίνεται στην περιγραφή των πιο διαδεδομένων Εφαρμογών Πληροφορικής ως βασικών εργαλείων οργάνωσης και λειτουργίας μιας σύγχρονης επιχείρησης Ξύλου και Επίπλου, και η παρουσίαση της ύλης συνοδεύεται από πλήθος παραδειγμάτων και εφαρμογών.
Το περιεχόμενο του βιβλίου καλύπτει τις σημαντικότερες λύσεις εμπορικού και δωρεάν λογισμικού που υποστηρίζουν τις λειτουργικές διαδικασίες επιχειρήσεων επιπλοποιίας. Ιδιαίτερη έμφαση δίνεται στην περιγραφή μεθόδων διακίνησης, προβολής και αξιοποίησης της πληροφορίας με χρήση Διαδικτύου. Σε επιμέρους κεφάλαια παρουσιάζονται εφαρμογές που καλύπτουν τόσο το χρηματοοικονομικό τομέα (WMS, ERP, CRM), όσο και τους τομείς παραγωγής και αυτοματισμού γραφείου των σύγχρονων επιχειρήσεων επίπλου. Σε κάθε κεφάλαιο τονίζονται ιδιαίτερα τα οφέλη που προκύπτουν από την χρήση της εκάστοτε εφαρμογής λογισμικού καθώς και η συμβολή της στην παραγωγικότητα και την ανταγωνιστικότητα της επιχείρησης. Επιπλέον, τα κεφάλαια διανθίζονται με διαδραστικές παρουσιάσεις και πολυμεσικό περιεχόμενο για καλύτερη κατανόηση της ύλης ενώ περιλαμβάνουν ερωτήσεις πολλαπλής επιλογής και ασκήσεις που καλύπτουν διαφορετικά επίπεδα δυσκολίας.
Introduction to the book "Quantum Theory: Informational Foundations and Foils"
Creators: name: Chiribella, Giulio
name: Spekkens, Robert W.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: We present here our introduction to the contributed volume "Quantum Theory: Informational Foundations and Foils", Springer Netherlands (2016). It highlights recent trends in quantum foundations and offers an overview of the contributions appearing in the book.
description: 10 pages + links to the ArXiv version of the other book chapters. The arXiv links can also be found at http://qift.weebly.com/quantum-theory-informational-foundations-and-foils.html The printed version of the book can be found at https://www.springer.com/us/book/9789401773027
The Long Term Stability of Oscillations During Thermonuclear X-ray Bursts: Constraining the Binary X-ray Mass Function
Creators: name: Strohmayer, Tod E.
name: Zhang, William
name: Swank, Jean H.
name: Lapidus, Iosif
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the long term stability of the millisecond oscillations observed with the Rossi X-ray Timing Explorer (RXTE) during thermonuclear X-ray bursts from the low mass X-ray binaries (LMXB) 4U 1728-34 and 4U 1636-53. We show that bursts from 4U 1728-34 spanning more than 1.5 years have observed asymptotic oscillation periods which are within 0.2 microsec. of each other, well within the magnitude which could be produced by the orbital motion of the neutron star in a typical LMXB. This stability implies a timescale to change the oscillation period of > 23,000 years, suggesting a highly stable process such as stellar rotation as the oscillation mechanism. We show that period offsets in three distinct bursts from 4U 1636-53 can be plausibly interpreted as due to orbital motion of the neutron star in this 3.8 hour binary system. We discuss the constraints on the mass function which can in principle be derived using this technique.
description: 11 pages, 4 figures. AASTeX, to be published in the Astrophysical Journal Letters
On the electrodynamics of a magnetized rotating accretor
Creators: name: Treves, Aldo
name: Szuszkiewicz, Ewa
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the current flow in an accreting rotating neutron star (X-ray pulsator) and propose that the active magnetosphere is limited by the Alfvèn surface. Formulae for the luminosity and torque due to currents circulating in the neutron star are given, and astrophysical consequences for systems like Her X-1 and LMXRB are shortly discussed.
description: LATEX file, 8 pages
ESM 3 - BET for LEC400 from Removal of toxic metals from aqueous solution by biochars derived from long-root Eichhornia crassipes.
Creators: name: Li, Qiang
name: Tang, Lizhou
name: Hu, Jiang
name: Jiang, Ming
name: Shi, Xiaodong
name: Zhang, Tianxi
name: Li, Yuan
name: Pan, Xuejun
Publisher: name: The Royal Society
Year: 2018

description: The digital research results of BET for four kinds of biochars
Non-Abelian Anomalous (Super)Fluids in Thermal Equilibrium from Differential Geometry
Creators: name: Mañes, Juan L.
name: Megias, Eugenio
name: Valle, Manuel
name: Vazquez-Mozo, Miguel A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We apply differential geometry methods to the computation of the anomaly-induced hydrodynamic equilibrium partition function. Implementing the imaginary-time prescription on the Chern-Simons effective action on a stationary background, we obtain general closed expressions for both the invariant and anomalous part of the partition function. This is applied to the Wess-Zumino-Witten action for Goldstone modes, giving the equilibrium partition function of superfluids. In all cases, we also study the anomaly-induced gauge currents and energy-momentum tensor, providing explicit expressions for them.
description: 46 pages, LaTeX. v2: new subsection 5.3 included, discussion expanded, typos removed, and references added. It matches the version published in Journal of High Energy Physics
ESM 1 - BET for LEC200 from Removal of toxic metals from aqueous solution by biochars derived from long-root Eichhornia crassipes.
Creators: name: Li, Qiang
name: Tang, Lizhou
name: Hu, Jiang
name: Jiang, Ming
name: Shi, Xiaodong
name: Zhang, Tianxi
name: Li, Yuan
name: Pan, Xuejun
Publisher: name: The Royal Society
Year: 2018

description: The digital research results of BET for four kinds of biochars
The stellar dynamics and mass of NGC 1316 using the radial velocities of planetary nebulae
Creators: name: Arnaboldi, M.
name: Freeman, K. C.
name: Gerhard, O.
name: Matthias, M.
name: Kudritzki, R. P.
name: Mendez, R. H.
name: Capaccioli, M.
name: Ford, H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study of the kinematics of the outer regions of the early-type galaxy NGC 1316, based on radial velocity measurements of 43 planetary nebulae as well as deep integrated-light absorption line spectra. The smoothed velocity field of NGC 1316 indicates fast rotation at a distance of 16 kpc, possibly associated with an elongated feature orthogonal to the inner dust lanes. The mean square stellar velocity is approximately independent of radius, and the estimated total mass of the system is 2.6 x 10^11 M_sun within a radius of 16 kpc, implying an integrated mass-to-light ratio of M/L_B = 8.
description: 39 pages, 14 figures, in press on The Astrophysical Journal n. 507
The luminous late-time emission of the type Ic supernova iPTF15dtg - evidence for powering from a magnetar?
Creators: name: Taddia, F.
name: Sollerman, J.
name: Fremling, C.
name: Karamehmetoglu, E.
name: Barbarino, C.
name: Lunnan, R.
name: West, S.
name: Gal-Yam, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: iPTF15dtg is a Type Ic supernova (SN) showing a broad light curve around maximum light, consistent with massive ejecta if we assume a radioactive-powering scenario. We study the late-time light curve of iPTF15dtg, which turned out to be extraordinarily luminous for a stripped-envelope (SE) SN. We compare the observed light curves to those of other SE SNe and also with models for the $^{56}$Co decay. We analyze and compare the spectra to nebular spectra of other SE SNe. We build a bolometric light curve and fit it with different models, including powering by radioactivity, magnetar powering, as well as a combination of the two. Between 150 d and 750 d past explosion, iPTF15dtg's luminosity declined by merely two magnitudes instead of the six magnitudes expected from $^{56}$Co decay. This is the first spectroscopically-regular SE SN showing this behavior. The model with both radioactivity and magnetar powering provides the best fit to the light curve and appears to be the more realistic powering mechanism. An alternative mechanism might be CSM interaction. However, the spectra of iPTF15dtg are very similar to those of other SE SNe, and do not show signs of strong CSM interaction. iPTF15dtg is the first spectroscopically-regular SE SN whose light curve displays such clear signs of a magnetar contributing to the powering of the late time light curve. Given this result, the mass of the ejecta needs to be revised to a lower value, and therefore the progenitor mass could be significantly lower than the previously estimated $>$35 $M_{\odot}$.
description: 9 pages, 8 figures, accepted for publication in Astronomy and Astrophysics
The Onset of the Cold HI Phase in Disks of Protogalaxies
Creators: name: Corbelli, Edvige
name: Salpeter, Edwin E.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss a possible delay experienced by protogalaxies with low column density of gas in forming stars over large scales. After the hydrogen has recombined, as the external ionizing UV flux decreases and the metal abundance $Z$ increases, the HI, initially in the warm phase ($T\simgt 5000$ K), makes a transition to the cool phase ($T\simlt 100$ K). The minimum abundance $Z_{min}$ for which this phase transition takes place in a small fraction of the Hubble time decreases rapidly with increasing gas column density. Therefore in the ``anemic'' disk galaxies, where $N_{HI}$ is up to ten times smaller than for normal large spirals, the onset of the cool HI phase is delayed. The onset of gravitational instability is also delayed, since these objects are more likely to be gravitationally stable in the warm phase than progenitors of today's large spiral galaxies. The first substantial burst of star formation may occur only as late as at redshifts $z \sim 0.5$ and give a temporary high peak luminosity, which may be related to the ``faint blue objects". Galaxy disks of lower column density tend to have lower escape velocities and a starburst/galactic fountain instability which decreases the gas content of the inner disk drastically.
description: TeX file, 24 pages, 4 figures available upon request from edvige@arcetri.astro.it, to appear in The Astrophysical J. (Sept. 1)
Exact black holes in quadratic gravity with any cosmological constant
Creators: name: Svarc, Robert
name: Podolsky, Jiri
name: Pravda, Vojtech
name: Pravdova, Alena
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a new explicit class of black holes in general quadratic gravity with a cosmological constant. These spherically symmetric Schwarzschild-Bach-(anti-)de Sitter geometries (Schwa-Bach-(A)dS), derived under the assumption of constant scalar curvature, form a three-parameter family determined by the black-hole horizon position, the value of Bach invariant on the horizon, and the cosmological constant. Using a conformal to Kundt metric ansatz, the fourth-order field equations simplify to a compact autonomous system. Its solutions are found as power series, enabling us to directly set the Bach parameter and/or cosmological constant equal to zero. To interpret these spacetimes, we analyse the metric functions. In particular, we demonstrate that for a certain range of positive cosmological constant there are both black-hole and cosmological horizons, with a static region between them. The tidal effects on free test particles and basic thermodynamic quantities are also determined.
description: 6 pages, 3 figures: accepted for publication in Physical Review Letters
Theoretical and experimental investigation of quantum well intermediate band solar cells
Creators: name: Ito, Megumi
Publisher: name: Imperial College London
Year: 2014

description: In order for photovoltaic energy conversion to compete with conventional energy sources and become a realistic alternative source of low-carbon renewable energy, significant cost-per-watt reduction is required. One obvious way to achieve this is to increase the conversion efficiency of solar cells, which is currently limited to around 30% even with modern technology. The Intermediate Band Solar Cell (IBSC), the focus of this project, is a concept that promises photovoltaic power conversion efficiencies of up to 63.2% through the introduction of an extra energy band in the bandgap of a semiconductor. However, many attempts to achieve IBSCs using quantum dots superlattice show poor conversion efficiency due to their small absorption cross-section and short-lived intermediate state. In this project, we attempt to overcome this issue by proposing an innovative Photon Ratchet (PR) quantum well cascade structure designed to improve the efficiency, through increasing the absorption cross-section and the lifetime of electrons in the intermediate state. The goal of this project is to prove the benefits of this concept, both theoretically and experimentally. In this thesis, theoretical and experimental work on quantum well solar cells is presented. The basic concept of solar cells, IBSC and PR-IBSC as well as their advantages and disadvantages are discussed in chapter 1, along with theory of quantum mechanics and optical transitions in quantum wells. Chapter 2 focuses on theoretical work, which includes limiting efficiency calculation and fundamental loss calculation in solar cells, in order to determine the fundamental benefit of the PR-IBSC when compared with conventional IBSCs. The result of this work was published in Applied Physics Letter in 2012 to propose the concept of the PR-IBSC for the first time. Experimental work on existing quantum well solar cells is presented in chapter 3, along with basic characterisation techniques. The InGaAs quantum well with GaAs barrier in a p-i-n diode is optically and electrically characterised and we describe how we have observed an increase in photocurrent due to sequential absorption of photons via the intermediate band (IB), which arises from the one-dimensional confinement in the quantum well, for the first time. This is an important result and has been published in the Journal of Photovoltaics in 2014. In order to study the interband and inter-subband transitions in quantum wells individually, we also designed a new set of samples, along with their reference samples, which consist of n-i-n and p-i-n diodes with identical single quantum wells in the i-region. The details of the samples, along with a model which simulates the transitions in quantum wells and achieves basic characterisation of the samples, are presented in chapter 4. Finally, in chapter 5, we draw up our conclusions and future work on the new samples is discussed.
Instabilities in Photoionized Interstellar Gas
Creators: name: Corbelli, Edvige
name: Ferrara, Andrea
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a linear analysis of acoustic and thermo-reactive instabilities in a diffuse gas, photoionized and heated by a radiation field, cooled by collisional excitation of hydrogen and metal lines. The hydrogen recombination reaction has a stabilizing effect on the thermal mode found by Field (1965) since the condensation instability occurs in a narrower region of the parameter space and grows on longer time scales due to its oscillatory character. This effect is stronger when the mean photon energy is not much larger than the hydrogen ionization energy. Moreover, for fixed values of thermal pressure and photoionization rate, there are thermo- reactive unstable equilibria for which no transition to a stable phase is possible. By extending our analysis of the thermo-reactive modes to the nonlinear regime we show that when no phase transition is possible the medium evolves through a series of nonequilibrium states characterized by large amplitude, nonlinear periodic oscillations of temperature, density and hydrogen ionization fraction. We find also unstable acoustic waves which, for solar metal abundances, are the fastest growing modes in two temperature intervals: around $T\sim 100$~K and $T\sim 8000$~K (i.e. cold and warm phase, respectively), independent of the mean photon energy. Possible implications for the interstellar medium and intergalactic medium are briefly outlined.
description: TeX file, 24 pages, 6 figures available upon request from edvige@arcetri.astro.it, to appear in The Astrophysical J. (July 10)
$\ell$-Boson stars
Creators: name: Alcubierre, Miguel
name: Barranco, Juan
name: Bernal, Argelia
name: Degollado, Juan Carlos
name: Diez-Tejedor, Alberto
name: Megevand, Miguel
name: Nunez, Dario
name: Sarbach, Olivier
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present new, fully nonlinear numerical solutions to the static, spherically symmetric Einstein-Klein-Gordon system for a collection of an arbitrary odd number $N$ of complex scalar fields with an internal $U(N)$ symmetry and no self-interactions. These solutions, which we dub $\ell$-boson stars, are parametrized by an angular momentum number $\ell=(N-1)/2$, an excitation number $n$, and a continuous parameter representing the amplitude of the fields. They are regular at every point and possess a finite total mass. For $\ell = 0$ the standard spherically symmetric boson stars are recovered. We determine their generalizations for $\ell > 0$, and show that they give rise to a large class of new static configurations which might have a much larger compactness ratio than $\ell=0$ stars.
description: 11 pages, 3 figures, 1 table. To appear as a Letter in Classical and Quantum Gravity
Rosa pendulina Linnaeus, 1753, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1753
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa pendulina

description: Rosa pendulina, spec. nov.
11. Rosa fructibus oblongis pendulis.
 Rosa sangvisorbae majoris folio, fructu longo pendulo. Dill. elth. 325. t.245. f.317.
 Habitat in Europa . ♄
description: Published as part of Linnaeus, Carolus, 1753, Species plantarum: exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas, Stockholm :Laurentius Salvius on page 492, DOI: 10.5281/zenodo.3931989
Extended ammonia observations towards the 'Integral-Shaped Filament'
Creators: name: Wu, Gang
name: Qiu, Keping
name: Esimbek, Jarken
name: Zheng, Xingwu
name: Henkel, Christian
name: Li, Dalei
name: Han, Xiaohong
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations suggest a scenario in which filamentary structures in the ISM represent the first step towards clumps/cores and eventually star formation. The densest filaments would then fragment into prestellar cores owing to gravitational instability. We seek to understand the roles filamentary structures play in high-mass star formation. We mapped the integral-shaped filament (ISF) in NH3 (1, 1) and (2, 2). The whole filamentary structure is uniformly and fully sampled. We find that the morphology revealed by the map of velocity-integrated intensity of the NH3 (1, 1) line is closely associated with the dust ridge. We identify 6 "clumps" related to the well known OMC-1 to 5 and 11 "sub-clumps" within the map and they are separated not randomly but in roughly equal intervals along the ISF. The average spacing of clumps is 11.30'$\pm$1.31' (1.36$\pm$0.16 pc ) and the average spacing of sub-clumps is 7.18'$\pm$1.19' (0.86$\pm$0.14 pc). These spacings agree well with the predicted values of the thermal (0.86 pc) and turbulent sausage instability (1.43 pc) by adopting a cylindric geometry of the ISF with an inclination of $60^{\circ}$ with respect to the line of sight. We also find a velocity gradient of about 0.6 km s-1 pc-1 that runs along the ISF which likely arises from an overall rotation of the Orion A molecular cloud. The inferred ratio between rotational and gravitational energy is well below unity. Furthermore, fluctuations are seen in the centroid velocity diagram along the ISF. The OMC-1 to 5 clouds are located close to the local extrema of the fluctuations, which suggests that there exist gas flows associated with these clumps in the ISF. The derived NH3 (1, 1) and (2, 2) rotation temperatures in the OMC-1 are about 30-40 K. In OMC-2, OMC-3, and the northern part of OMC-4, we find higher and lower temperatures at the boundaries and in the interior, respectively.
description: Accepted by A&A. 14 pages, 14 figures
The solar internal rotation from GOLF splittings
Creators: name: Corbard, T.
name: Di Mauro, M. P.
name: Sekii, T.
name: team, the GOLF
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The low degree splittings obtained from one year of GOLF data analysis are combined with the MDI medium-l 144-day splittings in order to infer the solar internal rotation as a function of the radius down to $0.2R_\odot$. Several inverse methods are applied to the same data and the uncertainties on the solution as well as the resolution reachable are discussed. The results are compared with the one obtained from the low degree splittings estimated from GONG network.
description: 6 pages, 7 figures, to appear in Proceedings of the SOHO6/GONG98 workshop, ESA SP-418
Fiber optics chemical sensors based on responsive polymers
Creators: name: Tou, Zhi Qiang
Publisher: name: Imperial College London
Year: 2014

description: Fiber optic chemical sensors (FOCS) have made tremendous progress since developments began in the 1960s with continuous reports of new configurations, materials and applications even today. Techniques like interferometry and plasmonic resonance are set to form the next generation of FOCS, representing a deviation from conventional luminescence based techniques. The thesis presents an optic fiber sensor platform for localized surface plasmon resonance (LSPR) by using a speciality photonic crystal fiber (PCF) to excite LSPR via cladding modes. The sensor offers facile fabrication and achieves high refractive index sensitivity of -731 % transmittance/RIU with limit of detection (LOD) 1.76 x 10-5 refractive index unit (RIU). Responsive polymers, exhibiting physio-chemical changes when exposed to specific stimuli are investigated for feasibility in FOCS based on LSPR and interferometry. A pH sensor is proposed by formation of a gold nanoparticles (AuNPs) embedded polyelectrolyte multilayer (PEM) consisting of Chitosan and poly(styrene sulfonate) (PSS) onto the forementioned sensor. The sensor exhibits pH responsiveness between physiological range of pH 6.5 to 8 and its behavior can be modeled by the Henderson-Hasselbach equation. The biocompatibility of the materials enables in-vivo application of the sensor. Interferometry FOCS using hydrogel as sensing material are investigated. Mach Zehnder interferometers (MZI) can be constructed from PCF. A proposed double- pass MZI shows higher Q factor and higher resolution than a single-pass MZI. By coating a thin poly(HEMA-co-DMAEM) hydrogel film, the MZI pH sensor shows a linear pH response with pH 6.75 to 8.25 (R2 = 0.986) with LOD pH 0.004. The sensor is successfully applied to the monitoring of cell culture media. A generalized approach in fabricating hydrogel based interferometric sensors is demonstrated through use of poly(vinyl alcohol) (PVA)-co- poly(acrylic acid) (PAA) hydrogel. The PVA/PAA offers tremendous ease in obtaining thin films on optical fiber via simple dip coating without need for additional cross linkers and polymerisation initiators. The carboxyl groups on PAA offer efficient coupling to a variety of aminated receptors using carbodiimide coupling to realise a myriad of sensing possibilities. The biocompatibility of both PVA and PAA also makes the proposed sensing film suitable for in-vivo applications. The sensor is demonstrated for sensing of small chemical species like Ni2+. It was found that sensitivity of the PVA/PAA is affected by the PVA/PAA ratio and duration of heat induced esterification which controls the degree of cross linking and the maximum amount of receptors that can be immobilised. The optimal PVA/PAA hydrogel is fabrication from a 12:6 wt % ratio and cross linked at 130 oC for 30 min. By modifying the PVA/PAA hydrogel with hydroxyquinoline, the sensor is able to detect Ni2+ with good sensitivity 0.214 nm/μM and LOD 1nM adequate for continuous monitoring of drinking water.
Additional file 4 of Characterization of tea (Camellia sinensis L.) flower extract and insights into its antifungal susceptibilities of Aspergillus flavus
Creators: name: Chen, Fangfang
name: Chen, Yu-Pei
name: Wu, Hongtan
name: Li, Ya
name: Zhang, Shudi
name: Ke, Jincheng
name: Yao, Jeng-Yuan
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Supplementary Material 4
Rosa pendulina Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa pendulina

description: Rosa pendulina Linnaeus, Species Plantarum 1: 492. 1753.
"Habitat in Europa." RCN: 3746.
Lectotype (Heath in Calyx 1: 165. 1992): [icon] " Rosa Sanguisorbae majoris folio, fructu longo pendulo ex N. A. " in Dillenius, Hort. Eltham. 2: 325, t. 245, f 317. 1732.
Current name: Rosa pendulina L. (Rosaceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 799, DOI: 10.5281/zenodo.291971
Recovering the Primordial Density Fluctuations: A comparison of methods
Creators: name: Narayanan, Vijay K.
name: Croft, Rupert A. C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comparative study of six different methods for reversing the gravitational evolution of a cosmological density field to recover the primordial fluctuations: linear theory, the Gaussianization mapping scheme, two different quasi-linear dynamical schemes based on the Zel'dovich approximation, a Hybrid dynamical-Gaussianization method and the Path Interchange Zel'dovich Approximation (PIZA). The final evolved density field from an N-body simulation constitutes our test case. We use a variety of statistical measures to compare the initial density field recovered from it to the true initial density field, using each of the six different schemes. These include point-by-point comparisons of the density fields in real space, the individual modes in Fourier space, as well as global statistical properties such as the genus, the PDF of the density, and the distribution of peak heights and their shapes. We find linear theory to be the most inaccurate of all the schemes. The Gaussianization scheme is the least accurate after linear theory. The two quasi-linear dynamical schemes are more accurate than Gaussianization, although they break down quite drastically when used outside their range of validity - the quasi-linear regime. The complementary beneficial aspects of the dynamical and the Gaussianization schemes are combined in the Hybrid method. We find this Hybrid scheme to be more accurate and robust than either Gaussianization or the dynamical method alone. The PIZA scheme performs substantially better than the others in all point-by-point comparisons. However, it produces an oversmoothed initial density field, with a smaller number of peaks than expected, but recovers the PDF of the initial density with impressive accuracy on scales as small as 3Mpc/h.
description: 39 pages, including 13 Figures, submitted to ApJ
MOESM1 of Enantiomer discrimination in β-phenylalanine degradation by a newly isolated Paraburkholderia strain BS115 and type strain PsJN
Creators: name: Buß, Oliver
name: Sarah-Marie Dold
name: Obermeier, Pascal
name: Litty, Dennis
name: Muller, Delphine
name: Grüninger, Jens
name: Rudat, Jens
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Acetophenone (AP) content during fermentation process in comparison to (S)-β-PA concentration. AP concentration rises inversely proportional to (S)-β-PA degradation and decreases after (S)-β-PA depletion. a) BS115 fermentation b) PsJN fermentation. Figure S2. Extracellular capsule built by BS115 during fermentation after depletion of (S)-β-PA. The capsule of BS115 was visualized by negative contrasting with Chinese ink. Figure S3. Transaminase activity of cell free lysate of BS115 and PsJN. In red triangles: (R)-β-PA; in green triangles (S)-β-PA. The reaction was performed at 30 °C in reaction mixture (see also section 2.6) of 12 mM of rac- β-PA using α-ketoglutarate as amino acceptor. The reaction and sampling time was chosen to depict fast reactions as well as possible long-term effects. Figure S4. pH profile during fermentation of BS115 and PsJN in 1.5 L bioreactor systems using minimal medium. In contrast to PsJN, BS115 showed a stabilization of the pH value between 20 and 40 h. Figure S5. Chiral separation of β-PA using IBLC-OPA pre-column derivatization and reversed phase HPLC according to Brucher et al. (2010a).The retention time of the (R)-enantiomer is 3.7 min, of the (S)-enantiomer 4.8 min. Figure S6. Relative transaminase activity of BS115 in regard to pH. The reactions were performed with 2.5 mM of racemic β-phenylalanine using 0.5 mg/mL of protein at 30 °C.