cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: ÐÐµÐ¾ÑÐ³Ð°Ð½Ð¸ÑÐµÑÐºÐ°Ñ Ñ Ð¸Ð¼Ð¸Ñ
title: ÑÑÐµÐ±Ð½Ð¸Ðº Ð´Ð»Ñ ÑÐµÐ»ÑÑÐºÐ¾Ñ Ð¾Ð·ÑÐ¹ÑÑÐ²ÐµÐ½Ð½ÑÑ Ð²ÑÐ·Ð¾Ð²
titleType: Subtitle
Creators: name: Ð¥Ð¾Ð¼ÑÐµÐ½ÐºÐ¾, ÐÐ°Ð²ÑÐ¸Ð¸Ð»
name: Ð¦Ð¸ÑÐ¾Ð²Ð¸Ñ, ÐÐ³Ð¾ÑÑ
Publisher: name: ÐÑÑÑÐ°Ñ ÑÐºÐ¾Ð»Ð°
Year: 1987
Subjects: ÐÐµÐ¾ÑÐ³Ð°Ð½Ð¸ÑÐµÑÐºÐ°Ñ Ñ Ð¸Ð¼Ð¸Ñ

description: ÐÐ·Ð»Ð°Ð³Ð°ÑÑÑÑ Ð¾Ð±ÑÐµÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð²Ð¾Ð¿ÑÐ¾ÑÑ Ð½ÐµÐ¾ÑÐ³Ð°Ð½Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¸Ð¼Ð¸Ð¸ - Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¸ Ð·Ð°ÐºÐ¾Ð½Ñ ÑÐ¸Ð¼Ð¸Ð¸, ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ Ð°ÑÐ¾Ð¼Ð¾Ð², Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð·Ð°ÐºÐ¾Ð½ Ð. Ð. ÐÐµÐ½Ð´ÐµÐ»ÐµÐµÐ²Ð°, ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÐ°Ñ ÑÐ²ÑÐ·Ñ Ð¸ ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ Ð¼Ð¾Ð»ÐµÐºÑÐ», ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¿ÑÐµÐ²ÑÐ°ÑÐµÐ½Ð¸Ñ, ÑÐ°ÑÑÐ²Ð¾ÑÑ, ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½ÑÐµ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ñ, Ð¾ÐºÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾-Ð²Ð¾ÑÑÑÐ°Ð½Ð¾Ð²Ð¸ÑÐµÐ»ÑÐ½ÑÐµ ÑÐµÐ°ÐºÑÐ¸Ð¸, ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð¼ÐµÑÐ°Ð»Ð»Ð¾Ð². Ð Ð¾Ð¿Ð¸ÑÐ°ÑÐµÐ»ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸
Ð³Ð»Ð°Ð²Ð½Ð¾Ðµ Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ ÑÐ´ÐµÐ»ÐµÐ½Ð¾ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ð¼, Ð¸Ð¼ÐµÑÑÐ¸Ð¼ Ð±Ð¸Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¸ ÑÐµÐ»ÑÑÐºÐ¾ÑÐ¾Ð·ÑÐ¹ÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¼Ð¸Ð½ÐµÑÐ°Ð»ÑÐ½ÑÐ¼ ÑÐ´Ð¾Ð±ÑÐµÐ½Ð¸ÑÐ¼ Ð¸ Ð¿ÐµÑÑÐ¸ÑÐ¸Ð´Ð°Ð¼
title: ÐÑÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ, ÐºÑÐ»ÑÑÐ¸Ð²Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÐºÑÐ¸Ð¾ÐºÐ¾Ð½ÑÐµÑÐ²Ð°ÑÐ¸Ñ ÑÐ¼Ð±ÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð¸ Ð¿Ð¾ÑÑÐ½Ð°ÑÐ°Ð»ÑÐ½ÑÑ Ð¿Ð°Ð½ÐºÑÐµÐ°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¾ÑÑÑÐ¾Ð²ÐºÐ¾Ð² Ð¼ÑÑÐ¸
title: Isolation, cell culture, and cryoconservation of embryonic and adult murine pancreatic islets
Creators: name: ÐÐ°ÑÐ¸Ð¼Ð¾Ð²Ð°, Ð.
name: "ÐÐ¾Ð»Ð»ÐµÐºÑÐ¸Ð¸ ÐºÑÐ»ÑÑÑÑ ÐºÐ»ÐµÑÐ¾Ðº ÑÐµÐ»Ð¾Ð²ÐµÐºÐ° Ð¸ Ð¶Ð¸Ð²Ð¾ÑÐ½ÑÑ : ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÐµ Ð²ÑÐ·Ð¾Ð²Ñ Ð¸ ÑÐµÑÐµÐ²ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ", Ð²ÑÐµÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ°Ñ ÑÐºÐ¾Ð»Ð°-ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ (2022; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2022
Subjects: ÐÐ»ÐµÑÐºÐ° (Ð±Ð¸Ð¾Ð».)

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ»Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ñ ÑÐ¼Ð±ÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÐµ Ð¸ Ð¿Ð¾ÑÑÐ½Ð°ÑÐ°Ð»ÑÐ½ÑÐµ Ð¾ÑÑÑÐ¾Ð²ÐºÐ¸ Ð¼ÑÑÐ¸ (Ð»Ð¸Ð½Ð¸Ð¸ C57Bl/6 Ð¸ GFP) ÐºÐ°Ðº Ð±Ð¾Ð»ÐµÐµ Ð»ÐµÐ³ÐºÐ¾Ð´Ð¾ÑÑÑÐ¿Ð½ÑÐ¹ Ð¼Ð¾Ð´ÐµÐ»ÑÐ½ÑÐ¹ Ð¾Ð±ÑÐµÐºÑ. ÐÑÐ» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¼ÐµÑÐ¾Ð´ Ð²ÑÐ´ÐµÐ»ÐµÐ½Ð¸Ñ ÑÐ¼Ð±ÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÑ Ð¿Ð°Ð½ÐºÑÐµÐ°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¾ÑÑÑÐ¾Ð²ÐºÐ¾Ð² Ð¼ÑÑÐ¸ Ð½Ð° ÑÑÐ°Ð´Ð¸Ð¸ E18,5 Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÐºÐ¾Ð»Ð»Ð°Ð³ÐµÐ½Ð°Ð·Ñ IV.
Su Giove un’aurora a raggi X
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2016

L’impatto delle tempeste solari sull’aurora di Giove è stato osservato per la prima volta attraverso la rilevazione dei raggi X emessi nel corso di due osservazioni di 11 ore ciascuna, avvenute nell’ottobre del 2011, in occasione di un’espulsione di massa coronale interplanetaria
Arrays is Space to detect Upward Tau and Highest Altitude Showers
Creators: name: Fargion, Daniele
Publisher: name: 27th ICRC 2001, HE1.8, Vol-2, Germany, Pag. 903-906, 2001
Year: 2001

description: Ultra High Energy, UHE, upward Tau neutrinos Tau, anti-neutrino Tau, above
hundred TeVs and up to tens PeV energies, of relevant astrophysical nature, may
lead to UHE Taus and consequent Up-ward Tau air-Showers {UPTAUS} after
interaction on Earth crust surface. The UPTAUS discover may open a new UHE Tau
Neutrino Astrophysics. A new generation of Gamma, X, optical and Radio Arrays
in Space may discover, in the same Auger spirit, such up-coming Air-showers as
well as an additional Tau signal: the nearly Horizontal Tau AIR-Shower
{HORTAUS} originated by UHE neutrinos tau at 10^{19} eV energies arising from a
thin Earth crust corona at few tens of degree below the horizons; a degree
above the horizons, there should be over common diffused cosmic ray albedo, an
additional High Altitudes (nearly Horizontal) Showers {HIAS}, by more common
Cosmic Rays primaries at PeVs up to EeV and ZeV energies, both of hadronic or
of electro-magnetic $\gamma$ nature. Mini-arrays detectors in high Altitude
Balloons tails facing the horizons and the Earth below may also reveal both
UPTAUS, and HIAS, and more rarely HORTAUS. Gamma Burst, Cherenkov flashes and
rarer muons observed by high mountains peak arrays or high quota balloon array
may better probe UPTAUS and HORTAUS. Present and future X-Gamma satellites as
Beppo-Sax may be also able to discover HORTAUS and HIAS discovering transient
events by UHE source (as the Crab) while in occultation by Earth. Because of
the large shower distances and the Earth magnetic field, HIAS and HORTAUS
showers will be split in a {Twin-Beams} fan-shaped wide arc, orthogonal to the
terrestrial magnetic field, with a strong azimuths modulation. Gamma bursts
with rare single muons or neutrons at the horizon, associated with HIAS,
HORTAUS may be discovered by Glast and AMS satellite.
Theoretical study on pp --> p n pi+ reaction at medium energies
Creators: name: Ouyang, Z.
name: Xie, J. J.
name: Zou, B. S.
name: Xu, H. S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The $pp\to p n π^+$ reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various $N^*$ and $Δ^{*}$ resonances with mass up to about 2 GeV for the $pp\to p n π^+$ reaction. We extend a resonance model, which can reproduce the observed total cross section quite well, to give theoretical predictions of various differential cross sections for the present reaction at $T_p=2.88$ GeV. It could serve as a reference for identifying new physics in the future experiments at HIRFL-CSR.
description: talk at STORI08, Sept. 2008, Lanzhou, China
Available Energy for Life on a Planet, with or without Stellar Radiation
Creators: name: L. Sertorio
name: G. Tinetti
Publisher: name: INFN Open Access Repository
Year: 2001

description: The quest for life in the Universe is often affected by the free use of
extrapolations of our phenomenological geocentric knowledge. We point out that
the existence of a living organism, and a population of organisms, requires the
existence of available energy or, more precisely, available power per unit
volume (Sect. 1). This is not a geocentric concept, but a principle that
belongs to the foundations of thermodynamics. A quest about availability in the
Universe is justified. We discuss the case in which power comes from mining
(Sect. 2), and from thermal disequilibrium (Sect. 3). Thermal disequilibrium
may show up in two ways: on planets without a star (Sect. 4), and on planets
where the surface thermal disequilibrium is dominated by the incoming photon
flux from the nearest star (Sect. 6). In the first case we study the
availability by simulating the structure of the planet with a simple model that
contains the general features of the problem. For the first case we show that
the availability is in general very small (Sect. 5). In the second case we show
that the availability is in general large; the order of magnitude depends first
of all on the star's temperature and the planet's orbit, but is also controlled
by the greenhouse gases present on the planet.
Nuova mappa della gravità di Marte
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2016

Scienziati al Goddard Space Flight Center della NASA hanno utilizzato le lievi fluttuazioni orbitali di tre sonde spaziali in orbita attorno a Marte per misurarne il campo gravitazionale con un dettaglio senza precedenti. La mappa fornisce nuove indicazioni sullo spessore della crosta marziana, sulla composizione interna del pianeta e sulle variazioni stagionali di ghiaccio secco ai poli
Galassia nana testimone d’eventi catastrofici
Creators: Francesca Aloisio
Publisher: name: Media Inaf
Year: 2016

Le osservazioni condotte sulla galassia nana ultradebole Reticulum II, scoperta di recente grazie ai dati della Dark Energy Survey, cercano di fare chiarezza sui processi alla base della creazione degli elementi più pesanti presenti nel nostro universo, come l’oro e il piombo. I risultati, pubblicati su Nature, suggeriscono che all'origine di questi elementi ci sarebbero eventi catastrofici, come per esempio la collisione tra due stelle di neutroni
Venti di quasar
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2016

Provengono da una galassia lontana, e fra le emissioni generate da un buco nero supermassiccio sono quelle più veloci mai osservate a lunghezze d’onda ultraviolette. Mauro Dadina (INAF): «Hanno energia sufficiente a spazzare via il gas da cui si formano le stelle delle galassie»
A kinetic study of the addition of the ethyl radical to conjugated dienes and related compounds
Creators: name: Brown, Alistair Chalmers Ramsay
Publisher: name: University of British Columbia
Year: 2011

description: A kinetic survey of the reactions of the ethyl radical with conjugated cyclic defines and related compounds has revealed a great variety of reactivity with respect both to addition and metathesis. An attempt to correlate reactivity with molecular structure has been presented both in the language of polymerization kinetics and of molecular orbital theory. In particular, the correlation of the energy of activation for the addition reaction with free valence and with localization energy has been pursued with some measure of success. The results of this survey indicate that characteristic values exist for the weighted A factors of both the addition and metathetical reactions. If the measured A factor is divided by the number of equivalent most-reactive sites in the molecule, values of the quotient lie within a narrow range. A characteristic value of this quotient appears to be common to molecules of diverse structural types. The results of this survey closely parallel the results of other investigators in related fields. In particular, rate constants for the addition of the ethyl radical in the gas phase are linearly related to rate constants for the addition of the methyl and the poly-styryl radical in solution. The few deviations observed in the comparison with the polyvinyl acetate and the polyacrylonitrile radicals may be explained in terms of polar effects by reference to the general equations for radical reactivity proposed by Bamford, Jenkins and Johnston and by Schwan and Price. The significance of the ratio of rate constants for addition and metathesis of a given compound with the ethyl radical has been considered as an index for reactivity in homopolymerization. The values of the ratio accord well with the published data on the degree of polymerization of these compounds. Finally the kinetic measurements have provided further information on certain special topics including the reactions of the cyclohexadienyl radical, the electron affinity of cyclooctatetraene and the structure of cycloheptatriene.
The Layer 0 Inner Silicon Detector of the D0 Experiment
Creators: name: Angstadt, R.
name: Bagby, L.
name: Bean, A.
name: Bolton, T.
name: Buchholz, D.
name: Butler, D.
name: Christofek, L.
name: Cooper, W. E.
name: Daly, C. H.
name: Demarteau, M.
name: Foglesong, J.
name: Gerber, C. E.
name: Gonzalez, H.
name: Green, J.
name: Guldenman, H.
name: Hanagaki, K.
name: Herner, K.
name: Howell, J.
name: Hrycyk, M.
name: Johnson, M.
name: Kirby, M.
name: Krempetz, K.
name: Kuykendall, W.
name: Lehner, F.
name: Lipton, R.
name: Lubatti, H. J.
name: Markley, D.
name: Matulik, M.
name: McCarthy, R. L.
name: Nomerotski, A.
name: Olis, D.
name: Orlov, Y.
name: Garzon, G. J. Otero y
name: Roman, M.
name: Rucinski, R.
name: Schultz, K.
name: Shabalina, E.
name: Smith, R. P.
name: Strom, D.
name: Taylor, R. D.
name: Tsybychev, D.
name: Tuttle, M.
name: Utes, M.
name: Wang, J.
name: Weber, M.
name: Wesson, T.
name: Youn, S. W.
name: Zhou, T.
name: Zieminski, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper describes the design, fabrication, installation and performance of the new inner layer called Layer 0 (L0) that was inserted in the existing Run IIa Silicon Micro-Strip Tracker (SMT) of the D0 experiment at the Fermilab Tevatron collider. L0 provides tracking information from two layers of sensors, which are mounted with center lines at a radial distance of 16.1 mm and 17.6 mm respectively from the beam axis. The sensors and readout electronics are mounted on a specially designed and fabricated carbon fiber structure that includes cooling for sensor and readout electronics. The structure has a thin polyimide circuit bonded to it so that the circuit couples electrically to the carbon fiber allowing the support structure to be used both for detector grounding and a low impedance connection between the remotely mounted hybrids and the sensors.
description: 28 pages, 9 figures
La supernova in diretta
Creators: Elisa Nichelli
Publisher: name: Media Inaf
Year: 2016

Grazie ai dati raccolti in tre anni dal telescopio spaziale Kepler, un team internazionale di scienziati è riuscito a cogliere sul fatto due stelle supergiganti rosse durante la loro esplosione come supernove. I risultati sono estremamente promettenti per le campagne osservative mirate a questo obiettivo
title: Ð Ð°Ð·Ð²Ð¸ÑÐ¸Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð°Ð²ÑÐ¾ÐºÑÐµÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð² ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¾Ð¼ Ð±Ð°Ð½ÐºÐµ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ "Ð¡Ð¾Ð²ÐºÐ¾Ð¼Ð±Ð°Ð½Ðº")
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ°Ð·Ð°ÑÐ¾Ð², ÐÐ¸ÑÐ¸Ð»Ð»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð°Ð²ÑÐ¾ÐºÑÐµÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
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description: Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð°ÑÐ¿ÐµÐºÑÑ ÐºÑÐµÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ Ð»Ð¸Ñ, Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ Ð¾Ð±Ð·Ð¾Ñ ÐºÑÐµÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ Ð»Ð¸Ñ, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿ÑÐ¾ÑÐµÑÑÐ° ÐºÑÐµÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ Ð»Ð¸Ñ Ð¸ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«Ð¡Ð¾Ð²ÐºÐ¾Ð¼Ð±Ð°Ð½ÐºÂ»; Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¿Ð¾ ÑÐ»ÑÑÑÐµÐ½Ð¸Ñ ÐºÑÐµÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ Ð»Ð¸Ñ Ð¸ ÑÐ°ÑÑÑÐ¸ÑÐ°Ð½Ð° Ð¸Ñ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ.
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Bagliori dal più eccentrico dei pianeti
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2016

HD 20782b ha l’orbita più schiacciata che si conosca tra gli esopianeti. Ora, grazie a nuove osservazioni, è stata vista la luce riflessa dall'atmosfera di questo mondo eccentrico, dove sembrano permanere cristalli di ghiaccio riflettenti che non hanno il tempo di sciogliersi durante il brevissimo volteggio attorno alla sua stella. Con il commento di Isabella Pagano dell'INAF di Catania
Un’orbita per due comete
Creators: Elisa Nichelli
Publisher: name: Media Inaf
Year: 2016

Sono previste ben due comete nei nostri cieli, tra oggi 21 e domani 22 marzo. Passeranno entrambe a distanza di sicurezza, sebbene una delle due arriverà così vicina a noi da non essere uguagliata almeno per i prossimi 150 anni. Per osservarle in cielo occorreranno strumenti professionali
title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð¹Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ 220/110 ÐºÐ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾Ð³Ð´Ð°Ð½Ð¾Ð², ÐÐ¾ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð²ÑÐ±Ð¾Ñ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ
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description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°, ÑÐ°Ð±Ð¾ÑÐ°ÑÑÐ°Ñ Ð½Ð° ÐºÐ»Ð°ÑÑÐ°Ñ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ 220/110 ÐºÐ. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ ÑÐ°ÑÑÐ¸ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ Ð¿ÑÐµÐ´Ð²Ð°ÑÐ¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð²ÑÐ±Ð¾Ñ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿Ð¾ÑÑÐµÐ±Ð»ÑÐµÐ¼Ð¾Ð¹ Ð¸ Ð³ÐµÐ½ÐµÑÐ¸ÑÑÐµÐ¼Ð¾Ð¹ Ð°ÐºÑÐ¸Ð²Ð½Ð¾Ð¹ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÑÑÐ½Ð¾Ð¹ Ð¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÐ¹ ÑÐ°ÑÑÐµÑ Ð¸ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÑÑÑÐ°Ð½Ð¾Ð²Ð¸Ð²ÑÐµÐ³Ð¾ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð° ÑÐ°Ð±Ð¾ÑÑ ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ. Ð ÑÑÐµÑÑÐµÐ¹ ÑÐ°ÑÑÐ¸ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð´Ð²ÑÑÑÐ°Ð·Ð½Ð¾Ð³Ð¾ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ Ð½Ð° Ð·ÐµÐ¼Ð»Ñ Ð² ÑÐ¸ÑÑÐµÐ¼Ðµ. Ð ÑÐµÑÐ²ÐµÑÑÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ðµ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÐ¸ ÑÐ¸ÑÑÐµÐ¼Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð´Ð²ÑÑÑÐ°Ð·Ð½Ð¾Ð³Ð¾ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ Ð½Ð° Ð·ÐµÐ¼Ð»Ñ.
title: Ð¢ÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ Ð¸Ð·Ð³Ð¾ÑÐ¾Ð²Ð»ÐµÐ½Ð¸Ñ Ð´ÐµÑÐ°Ð»Ð¸ "ÐÐ¾ÑÐ¿ÑÑ"
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾Ð³Ð¾Ð¼Ð¾Ð»Ð¾Ð², ÐÐ°Ð»ÐµÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2017
Subjects: ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ
ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð·Ð°Ð´Ð°ÑÐ¸
ÑÐµÐ¶ÑÑÐ¸Ð¹ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½Ñ
ÑÐµÑÐ²ÑÑÐ½Ð°Ñ ÑÑÐµÐ·Ð°
ÑÐµÐ¶Ð¸Ð¼Ñ ÑÐµÐ·Ð°Ð½Ð¸Ñ
Ð¸Ð½ÑÐµÑÐ²Ð°Ð» Ð´Ð¾Ð¿ÑÑÐºÐ°
Ð½Ð°Ð»Ð°Ð´Ð¾ÑÐ½ÑÐ¹ ÑÐ°Ð·Ð¼ÐµÑ
Ð·Ð°Ð³ÑÑÐ·Ð¾ÑÐ½Ð¾Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾
ÑÐ¸ÐºÐ»Ð¾Ð³ÑÐ°Ð¼Ð¼Ð°

description: ÐÐ»Ð°Ð²Ð½Ð¾Ð¹ ÑÐµÐ»ÑÑ Ð¿ÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÐ²Ð»ÑÐµÑÑÑ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ðµ Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð½ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ Ð·Ð°Ð´Ð°Ñ. Ð Ð·Ð°Ð´Ð°ÑÐ°Ð¼ Ð¾ÑÐ½Ð¾ÑÑÑÑÑ: ÑÐ¾ÑÐ½Ð¾ÑÑÑ ÑÐ°Ð·Ð¼ÐµÑÐ¾Ð², Ð´Ð¾Ð¿ÑÑÐºÐ¸ ÑÐ¾ÑÐ¼Ñ, Ð´Ð¾Ð¿ÑÑÐºÐ¸ Ð¾ÑÐ¸ÐµÐ½ÑÐ°ÑÐ¸Ð¸ Ð¸ Ð¼ÐµÑÑÐ¾ÑÐ°ÑÐ¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ, Ð´Ð¾Ð¿ÑÑÐºÐ¸ Ð±Ð¸ÐµÐ½Ð¸Ð¹, ÐºÐ°ÑÐµÑÑÐ²Ð¾ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½Ð¾Ð³Ð¾ ÑÐ»Ð¾Ñ, ÑÐ¸Ð·Ð¸ÐºÐ¾-Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°. Ð ÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð´Ð°Ð½Ð½ÑÑ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð½Ð° ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÑÐ°Ð¿Ð°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸. ÐÑÐ¸ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐµ Ð·Ð°Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð² Ð½ÐµÐºÐ¾ÑÐ¾ÑÑÑ ÑÐ»ÑÑÐ°ÑÑ Ð²Ð¾Ð·Ð½Ð¸ÐºÐ°ÐµÑ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ ÑÐ¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ°. Ð ÑÐ°ÐºÐ¸Ð¼ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ°Ð¼ Ð¾ÑÐ½Ð¾ÑÑÑÑÑ: ÑÐ°ÑÐ¾Ð½Ð½ÑÐµ ÑÐµÐ·ÑÑ, Ð¼ÐµÑÑÐ¸ÐºÐ¸, ÑÐµÑÐ²ÑÑÐ½ÑÐµ ÑÑÐµÐ·Ñ. Ð Ð°Ð±Ð¾ÑÐ° Ñ Ð´Ð°Ð½Ð½ÑÐ¼Ð¸ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ°Ð¼Ð¸ Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ Ð¿Ð¾Ð²ÑÑÐ°ÐµÑ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ°. Ð ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐµÑÐ¸Ð¹Ð½Ð¾Ð³Ð¾ Ð¸ Ð¼Ð°ÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ², ÐºÐ¾Ð³Ð´Ð° Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ Ð¿ÑÐ¾ÑÐ²Ð»ÑÐµÑ ÑÐµÑÐ°ÑÑÐµÐµ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ, Ð¸Ð¼ÐµÐµÑ Ð¼ÐµÑÑÐ¾ Ð±ÑÑÑ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð°ÑÐ¸Ñ Ð¾ÑÐ´ÐµÐ»ÑÐ½Ð¾Ð¹ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¸ Ð¸Ð»Ð¸ Ð²ÑÐµÐ³Ð¾ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ°. ÐÐ»Ñ ÑÑÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÑÐµÑÑÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾Ðµ Ð·Ð°Ð³ÑÑÐ·Ð¾ÑÐ½Ð¾Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾, Ð²ÑÐ¿Ð¾Ð»Ð½ÑÑÑÐµÐµ Ð²ÑÐµ ÑÐ°Ð±Ð¾ÑÐ¸Ðµ Ð¸ ÑÐ¾Ð»Ð¾ÑÑÑÐµ ÑÐ¾Ð´Ñ, Ð¿Ð¾Ð´Ð°ÑÑ Ð¸ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÑ Ð·Ð°Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð² Ð·Ð°Ð¶Ð¸Ð¼Ð½Ð¾Ðµ Ð¿ÑÐ¸ÑÐ¿Ð¾ÑÐ¾Ð±Ð»ÐµÐ½Ð¸Ðµ Ð±ÐµÐ· Ð½ÐµÐ¿Ð¾ÑÑÐµÐ´ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ°ÑÑÐ¸Ñ ÑÐµÐ»Ð¾Ð²ÐµÐºÐ°.
JIRAM scalda i motori
Creators: Marco Galliani
Publisher: name: Media Inaf
Year: 2016

In piena corsa verso Giove,  la sonda della NASA ha attivato per dei test, perfettamente riusciti, lo strumento italiano dedicato allo studio delle emissioni aurorali e termiche del pianeta, uno dei dieci a bordo della missione. Alberto Adriani, dell'INAF, principal Investigator di JIRAM: «Le riprese, anche se ottenute da una distanza così elevata, dimostrano già l’ottimo funzionamento di JIRAM, nella prospettiva dell’inizio della missione osservativa vera e propria»
The puzzle of apparent linear lattice artifacts in the 2d non-linear sigma-model and Symanzik's solution
Creators: name: Balog, Janos
name: Niedermayer, Ferenc
name: Weisz, Peter
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Lattice artifacts in the 2d O(n) non-linear sigma-model are expected to be of the form O(a^2), and hence it was (when first observed) disturbing that some quantities in the O(3) model with various actions show parametrically stronger cutoff dependence, apparently O(a), up to very large correlation lengths. In a previous letter we described the solution to this puzzle. Based on the conventional framework of Symanzik's effective action, we showed that there are logarithmic corrections to the O(a^2) artifacts which are especially large, (ln(a))^3, for n=3 and that such artifacts are consistent with the data. In this paper we supply the technical details of this computation. Results of Monte Carlo simulations using various lattice actions for O(3) and O(4) are also presented.
description: 62 pages, 15 figures, published version with references added
title: Ð¡ÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸. Ð Ð°ÑÑÐµÑ Ð´ÐµÑÐµÐ²ÑÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÐºÑÑÑÐ¸Ñ
title: ÑÑÐµÐ±Ð½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ Ðº ÐºÑÑÑÐ¾Ð²Ð¾Ð¼Ñ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
titleType: Subtitle
Creators: name: Ð¡ÐµÐ¼ÐµÐ½Ð¾Ð², ÐÐ¸ÑÐ¸Ð»Ð»
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2021
Subjects: Ð¡ÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸
ÐÐ¾ÐºÑÑÑÐ¸Ñ

description: Ð£ÑÐµÐ±Ð½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ Ð´Ð»Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ ÐºÑÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ° Ð¿Ð¾ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ð°Ð¼ Â«ÐÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð¸Ð· Ð´ÐµÑÐµÐ²Ð° Ð¸ Ð¿Ð»Ð°ÑÑÐ¼Ð°ÑÑÂ», Â«Ð¡ÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ (Ñ. 1. ÐÐµÑÐµÐ²ÑÐ½Ð½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸)Â» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð¾ Ð² ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ð¸ Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¾Ð¹ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð², ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð², Ð¾Ð±ÑÑÐ°ÑÑÐ¸ÑÑÑ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Â«Ð¡ÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð¾Â». ÐÑÐ°ÑÐºÐ¾ Ð¸Ð·Ð»Ð°Ð³Ð°ÐµÑÑÑ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ° ÑÐ°ÑÑÐµÑÐ° Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð´ÐµÑÐµÐ²ÑÐ½Ð½ÑÑ Ð¿Ð¾ÐºÑÑÑÐ¸Ð¹ Ð·Ð´Ð°Ð½Ð¸Ð¹ Ð¸ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹: Ð½Ð°ÑÑÐ¸Ð»Ð¾Ð², ÑÑÑÐ¾Ð¿Ð¸Ð» Ð¸ Ð¿ÑÐ¾Ð³Ð¾Ð½Ð¾Ð². ÐÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐ¹ Ð¿ÑÐ¸Ð¼ÐµÑ ÑÐ°ÑÑÐµÑÐ° Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ° Ð´ÐµÑÐµÐ²ÑÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÐºÑÑÑÐ¸Ñ. Ð£ÑÐµÐ±Ð½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð¾ÑÐ½Ð¾Ð¹ Ð¸ Ð·Ð°Ð¾ÑÐ½Ð¾Ð¹ ÑÐ¾ÑÐ¼ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ Ð½Ð°ÑÑÐ½Ð¾Ð¹ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ÑÑÐ¸ 05.23.01 Ð¤ÐÐÐ¡ Ð¸ Ð¡Ð£ÐÐ¡ Ð¡ÐÐ±ÐÐ£ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Â«Ð¡ÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð¾Â». ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð¼Ð¾Ð¶ÐµÑ Ð±ÑÑÑ Ð¿Ð¾Ð»ÐµÐ·Ð½Ð¾ Ð´Ð»Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð², ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð²
Ð¸ Ð¼Ð°Ð³Ð¸ÑÑÑÐ¾Ð² Ð² ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÑ Ð²ÑÐ·Ð°Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð² ÑÐ¸ÑÑÐµÐ¼Ð°Ñ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ Ð¸ Ð² ÑÑÑÐµÐ¶Ð´ÐµÐ½Ð¸ÑÑ Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ.
Constraints in the coupling Star-Life
Creators: name: L. Sertorio
name: G. Tinetti
Publisher: name: Nuovo Cim.C025:457-500,2002
Year: 2001

description: If life is sustained by a process of photosynthesis, not necessarily the same
existing on Earth, the surface temperature of the star and the orbit of the
host planet cannot be whatsoever. In fact the global life cycle, no matter how
complicated, must contain in general an upper photochemical branch and a lower
dark branch, characterized by a higher and a lower temperature. These two
temperatures are star-orbit related. The velocity along the cycle or, in other
words, the power of the life machine, depends in general on several other
parameters. First of all the Gibbs photon availability, which is a star-orbit
parameter and is the input for the upper branch. Then follows the energy
cascade that develops along the organic web with a large number of interactions
and typical times that must match the typical times generated by the
combination of spin value and orientation, eccentricity and precession.
Finally, the capacity of the web to keep the global life cycle running along
the life span of the star, comes from some inner form of self-endurance and
self-balance. The property of not being transient could be the right way of
introducing the concept of intelligent life.
Un giorno tutto questo sarà un pianeta
Creators: Stefano Parisini
Publisher: name: Media Inaf
Year: 2016

Ricordate l’immagine del disco circumstellare della giovane stella HL Tauri, dove si possono apprezzare i solchi vuoti, presumibilmente “arati” da pianeti in formazione? Una nuova immagine ottenuta con il radiotelescopio VLA rivela ora nuovi dettagli di quel grembo stellare, dove si è formato un grumo di polvere cosmica, probabile embrione di un futuro pianeta
Detecting high-energy neutrinos from microquasars with the ANTARES
  telescope
Creators: name: G. F. Burgio
name: For The ANTARES Collaboration
Publisher: name: INFN Open Access Repository
Year: 2004

description: The ANTARES project aims at the construction of a neutrino telescope 2500 m
below the surface of the Mediterranean sea, close to the southern French coast.
The apparatus will consist of a 3D array of photomultiplier tubes, which
detects the Cherenkov light emitted by upward going neutrino-induced muons.
High-energy neutrinos may be produced in powerful cosmic accelerators, such as,
gamma-ray bursters, active galactic nuclei, supernova remnants, and
microquasars. We have estimated the event rate in ANTARES of neutrinos coming
from these sources, and particularly for a microquasar model, and found that
for some of these sources the detection rate can be up to several events per
year.
Additional file 1: of Functional characterization of Gh_A08G1120 (GH3.5) gene reveal their significant role in enhancing drought and salt stress tolerance in cotton
Creators: name: Kirungu, Joy
name: Magwanga, Richard
name: Lu, Pu
name: Cai, Xiaoyan
name: Zhou, Zhongli
name: Wang, Xingxing
name: Peng, Renhai
name: Wang, Kunbo
name: Liu, Fang
Publisher: name: figshare
Year: 2019
Subjects: Biochemistry
Medicine
Molecular Biology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Developmental Biology
Mental Health

description: Table S1. Primers details used for RT-qPCR analysis of the Gossypium hirsutum GH3 genes under drought and salt stress conditions. (DOCX 18 kb)
Starlight: la nascita dell’Astrofisica in Italia
Creators: Francesca Aloisio
Publisher: name: Media Inaf
Year: 2016

Si aprirà il 21 marzo e durerà fino al 21 giugno 2016 la mostra “Starlight – la nascita dell’Astrofisica in Italia”, organizzata dall'INAF con il patrocinio del Ministero dei Beni e delle Attività Culturali. La mostra è stata pensata per essere diffusa “a rete” sul territorio italiano: ognuna delle cinque sezioni che la compongono sarà infatti ospitata in alcune delle sedi INAF, in particolare quelle di Arcetri (Firenze), Roma, Capodimonte (Napoli), Palermo, Padova
Realistic modellization for the growth of a yeast colony
Creators: name: Fortunato, Lorenzo
Publisher: name: INFN Open Access Repository
Year: 2001

description: An evolving yeast colony is simulated by means of a cellular automaton that
takes care of many important features of the system under study. A complete
survey of the properties of the colony is done and a set of scaling relations
is found, together with the analysis of the critical exponents. The
Family-Vicsek relation between them is verified to a good accuracy. A mobility
parameter is introduced in order to relate the behaviour of the growth exponent
with the temperature and we propose that the brownian motion is a key feature
to describe the bacterial and fungi growth process in diluted solutions. The
chemical and geometrical correlations are found to play a relevant role in the
modellization, so that the need of realism is emphasized. A new phase space
built upon the relevant 'thermodinamical' variables is explored.
Clifford groups of quantum gates, BN-pairs and smooth cubic surfaces
Creators: name: Planat, Michel
name: Solé, Patrick
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Group Theory (math.GR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The recent proposal (M Planat and M Kibler, Preprint 0807.3650 [quantph]) of representing Clifford quantum gates in terms of unitary reflections is revisited. In this essay, the geometry of a Clifford group G is expressed as a BN-pair, i.e. a pair of subgroups B and N that generate G, is such that intersection H = B \cap N is normal in G, the group W = N/H is a Coxeter group and two extra axioms are satisfied by the double cosets acting on B. The BN-pair used in this decomposition relies on the swap and match gates already introduced for classically simulating quantum circuits (R Jozsa and A Miyake, Preprint arXiv:0804.4050 [quant-ph]). The two- and three-qubit steps are related to the configuration with 27 lines on a smooth cubic surface.
description: 7 pages, version to appear in Journal of Physics A: Mathematical and Theoretical (fast track communications)
Neutral pion photoproduction at high energies
Creators: name: Sibirtsev, A.
name: Haidenbauer, J.
name: Krewald, S.
name: Meißner, U. -G.
name: Thomas, A. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A Regge model with absorptive corrections is employed in a global analysis of the world data on the reactions gamma p -> pi0 p and gamma n -> pi0 n for photon energies from 3 to 18 GeV. In this region resonance contributions are expected to be negligible so that the available experimental information on differential cross sections and single- and double polarization observables at -t < 2 GeV^2 allows us to determine the non-resonant part of the reaction amplitude reliably. The model amplitude is then used to predict observables for photon energies below 3 GeV. A detailed comparison with recent data from the CLAS and CB-ELSA Collaborations in that energy region is presented. Furthermore, the prospects for determining the pi0 radiative decay width via the Primakoff effect from the reaction gamma p -> pi0 p are explored.
description: 14 pages, 17 figures, typos in table 3 corrected; accepted for publication in Eur. Phys. J. A
Strong Minimizers of the Calculus of Variations on Time Scales and the Weierstrass Condition
Creators: name: Malinowska, Agnieszka B.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49K05; 39A12

description: We introduce the notion of strong local minimizer for the problems of the calculus of variations on time scales. Simple examples show that on a time scale a weak minimum is not necessarily a strong minimum. A time scale form of the Weierstrass necessary optimality condition is proved, which enables to include and generalize in the same result both continuous-time and discrete-time conditions.
description: Paper accepted 12/May/2009 for publication in the Proceedings of the Estonian Academy of Sciences
Tetrad Gravity: II) Dirac's Observables
Creators: name: Lusanna, Luca
name: Russo, Stefano
Publisher: name: INFN Open Access Repository
Year: 1999

description: After a study of the Hamiltonian group of gauge transformations of canonical tetrad gravity on globally hyperbolic, asymptotically flat at spatial infinity, spacetimes with Cauchy hypersurfaces $\Sigma_{\tau}$ diffeomorphic to $R^3, we find the dependence of the cotriads on $\Sigma_{\tau}$ and of their momenta on the six parameters associated with rotations and space diffeomorphisms. The choice of 3-coordinates on $\Sigma_{\tau}$ is equivalent to the parametrization of the cotriads with the last three degrees of freedom individuating the 3-geometries. The Shanmugadhasan canonical transformation, corresponding to the choice of 3-orthogonal coordinates on $\Sigma_{\tau}$ and adapted to 13 of the 14 first class constraints, and the interpretation of the gauge transformations are given. The gauge interpretation of tetrad gravity based on constraint theory implies that a "Hamiltonian kinematical gravitational field" is an equivalence class of pseudo-Riemannian spacetimes modulo the Hamiltonian group of gauge transformations: it includes a conformal 3-geometry and all the different 4-geometries (standard definition of a kinematical gravitational field, $Riem M^4/Diff M^4$) connected to it by the gauge transformations. A "Hamiltonian Einstein or dynamical gravitational field" is a kinematical one which satisfies the Hamilton-Dirac equations generated by the ADM energy: it coincides with the standard Einstein or dynamical gravitational field, namely a 4-geometry solution of Einstein's equations, since the Hilbert and ADM actions both generate Einstein's equations so that the kinematical Hamiltonian gauge transformations are dynamically restricted to the spacetime diffeomorphisms of the solutions of Einstein's equations.
title: Ð¡ÑÐ°Ð½Ð´Ð°ÑÑÑ Ð¸ Ð¸Ð½Ð´Ð¸ÐºÐ°ÑÐ¾ÑÑ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸
Creators: name: ÐÐ°Ð³ÑÐ»Ð¸Ð½Ð°, ÐÐ°ÑÐ°Ð»ÑÑ
name: "Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÐºÐ°ÑÐµÑÑÐ²Ð¾Ð¼ Ð² Ð¸Ð½ÑÐµÑÐµÑÐ°Ñ  ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾Ð³Ð¾ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ", Ð¼ÐµÐ¶Ð²ÑÐ·Ð¾Ð²ÑÐºÐ°Ñ Ð½Ð°ÑÑÐ½Ð¾-Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ (2019; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2019

description: Ð£Ð»ÑÑÑÐµÐ½Ð¸Ðµ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸ ÑÐ²Ð»ÑÐµÑÑÑ Ð¾Ð´Ð½Ð¾Ð¹ Ð¸Ð· Ð³Ð»Ð°Ð²Ð½ÑÑ Ð·Ð°Ð´Ð°Ñ, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ ÑÐµÑÐ¸ÑÑ Ð² Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð´Ð¾ÑÑÐ¸Ð¶ÐµÐ½Ð¸Ñ Ð¦ÐµÐ»ÐµÐ¹ ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾Ð³Ð¾ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ. Ð ÑÑÐ°ÑÑÐµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð°ÑÐ³ÑÐ¼ÐµÐ½ÑÑ Ð² Ð¿Ð¾Ð»ÑÐ·Ñ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ¾Ð² Ð¸ Ð¸Ð½Ð´Ð¸ÐºÐ°ÑÐ¾ÑÐ¾Ð² ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸ Ð² ÑÐ²ÑÐ·Ð¸ Ñ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÑÑ Ð¸Ñ Ð½ÐµÐ¿ÑÐµÑÑÐ²Ð½Ð¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ. ÐÐ¾Ð´ÑÐµÑÐºÐ½ÑÑÐ° Ð·Ð½Ð°ÑÐ¸Ð¼Ð¾ÑÑÑ ÑÑÐ°Ð»Ð¾Ð½Ð½Ð¾Ð¹ Ð±Ð°Ð·Ñ Ð¿Ð¾Ð½ÑÑÐ¸Ð¹Ð½Ð¾Ð³Ð¾ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÐ°, ÑÐ¾ÑÑÐ°Ð²Ð»ÑÑÑÐµÐ³Ð¾ ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½ÑÑ Ð¾ÑÐ½Ð¾Ð²Ñ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸. Ð¡Ð´ÐµÐ»Ð°Ð½ Ð²ÑÐ²Ð¾Ð´ Ð¾ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¼ÐµÑÐ¾Ð´Ð¾Ð»Ð¾Ð³Ð¸Ð¸ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸ Ð½Ðµ ÑÐ¾Ð»ÑÐºÐ¾ Ð² ÐºÐ¾Ð½ÑÐµÐºÑÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼ ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾Ð³Ð¾ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ, Ð½Ð¾ Ð¸ Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ð½Ð¾Ð²Ð¾Ð¹ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ¸.
Plutone, il pianeta nano è ancora “vivo”
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2016

Approfondiamo uno dei cinque articoli pubblicati ieri sulla prestigiosa rivista Science. I ricercatori si sono occupati in particolare degli aspetti geologici di Plutone, della sua superficie, ma anche delle caratteristiche di Caronte. Il pianeta nano sembra avere una significativa attività geologica
A model of subjective supply-demand: the maximum Boltzmann/Shannon entropy solution
Creators: name: Piotrowski, Edward W.
name: Sladkowski, Jan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We investigate activities that have different periods of duration. We define the profit intensity as a measure of this economic category. The profit intensity in a repeated trading has a unique property of attaining its maximum at a fixed point regardless of the shape of demand curves for a wide class of probability distributions of random reverse transaction (ie closing of the position). This type of market games is often considered in the research aiming at finding an algorithm that maximizes profit of a trader who negotiates prices with the Rest of the World (a collective opponent) that posses a definite and objective supply profile. Such idealization neglects the sometimes important influence of an individual trader on the demand/supply profile of the Rest of the World and in extreme cases questions the very idea of demand/supply profile. Therefore we put forward a trading model in which the demand/supply profile of the Rest of the World induces the (rational) trader to (subjectively) presume that he/she lacks (almost) all knowledge concerning the market but his/hers average frequency of trade. This point of view introduces maximum entropy principles into the model and broadens the range of economics phenomena that can be perceived as a sort of thermodynamical system. As a consequence, the profit intensity has a fixed point:the profit in tensity reaches its maximum when the probability of transaction is given by the Golden Ratio rule $\frac{\sqrt{5}-1}{2}$.
description: Presented at the SIGMAPHI 08 Conference
Upgraded VIRGO detector(s) and stochastic gravitational waves
  backgrounds
Creators: name: D. Babusci
name: M. Giovannini
Publisher: name: INFN Open Access Repository
Year: 1999

description: The sensitivity achievable by a pair of VIRGO detectors to stochastic and
isotropic gravitational wave backgrounds of cosmological origin is discussed in
view of the development of a second VIRGO interferometer. We describe a
semi-analytical technique allowing to compute the signal-to-noise ratio for
(monotonic or non-monotonic) logarithmic energy spectra of relic gravitons of
arbitrary slope. We apply our results to the case of two correlated and
coaligned VIRGO detectors and we compute their achievable sensitivities. The
maximization of the overlap reduction function is discussed. We focus our
attention on a class of models whose expected sensitivity is more promising,
namely the case of string cosmological gravitons. We perform our calculations
both for the case of minimal string cosmological scenario and in the case of a
non-minimal scenario where a long dilaton dominated phase is present prior to
the onset of the ordinary radiation dominated phase. In this framework, we
study possible improvements of the achievable sensitivities by selective
reduction of the thermal contributions (pendulum and pendulum's internal modes)
to the noise power spectra of the detectors. Since a reduction of the shot
noise does not increase significantly the expected sensitivity of a VIRGO pair
(in spite of the relative spatial location of the two detectors) our findings
support the experimental efforts directed towards a substantial reduction of
thermal noise.
Super spirali: un nuovo gigante cosmico
Creators: Elisa Nichelli
Publisher: name: Media Inaf
Year: 2016

Frugando in un archivio che contiene dati per oltre 100 milioni di galassie, un team di ricercatori ha scoperto una nuova classe di galassie, soprannominate “super spirali”. Queste galassie contengono circa 10 volte la massa della Via Lattea e potrebbero cambiare radicalmente la nostra comprensione dei processi di formazione ed evoluzione delle galassie più massicce
Un esercito di ricercatori per studiare Plutone
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2016

Dalla geologia all'atmosfera, passando per le 5 lune del sistema. Facciamo il punto sulla missione New Horizons che ha studiato Plutone lo scorso luglio 2015. Il pianeta nano è geologicamente attivo, o almeno lo è stato fino a "qualche" milione di anni fa
What is the radiative process of the prompt phase of Gamma Ray Bursts?
Creators: name: Ghisellini, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Despite the dramatic improvement of our knowledge of the phenomenology of Gamma Ray Bursts, we still do not know several fundamental aspects of their physics. One of the puzzles concerns the nature of the radiative process originating the prompt phase radiation. Although the synchrotron process qualifies itself as a natural candidate, it faces severe problems, and many efforts have been done looking for alternatives. These, however, suffer from other problems, and there is no general consensus yet on a specific radiation mechanism.
description: 6 pages, 3 figures, invited talk at the conference: X-Ray Astronomy 2009, Present Status, multiwavelength approach and future perspectives, September 2009, Bologna
Il primo Pevatron è di H.E.S.S.
Creators: Elisa Nichelli
Publisher: name: Media Inaf
Year: 2016

Un’analisi dettagliata dei dati raccolti dal sistema di telescopi H.E.S.S. in direzione del centro della Via Lattea ha rivelato per la prima volta l’emissione di raggi cosmici alle energie più alte mai osservate: 100 volte maggiori di quelle raggiunte dall’LHC del CERN. Il responsabile sembrerebbe essere il buco nero supermassiccio al centro della nostra Galassia. Il commento di Stefano Gabici del CNRS
General Covariance and the Objectivity of Space-Time Point-Events: The
  Physical Role of Gravitational and Gauge Degrees of Freedom in General
  Relativity
Creators: name: Lusanna, Luca
name: Pauri, Massimo
Publisher: name: INFN Open Access Repository
Year: 2003

description: (Abridged Abstract) This paper deals with a number of technical achievements
that are instrumental for a dis-solution of the so-called {\it Hole Argument}
in general relativity. The work is carried through in metric gravity for the
class of Christoudoulou-Klainermann space-times, in which the temporal
evolution is ruled by the {\it weak} ADM energy. The main results of the
investigation are the following: 1) A re-interpretation of {\it active}
diffeomorphisms as {\it passive and metric-dependent} dynamical symmetries of
Einstein's equations, a re-interpretation that discloses their (up to now
unknown) connection to gauge transformations on-shell; understanding such
connection also enlightens the real content of the {\it Hole Argument}. 2) The
utilization of Bergmann-Komar {\it intrinsic coordinates} for a peculiar
gauge-fixing to the superhamiltonian and supermomentum constraints which
embodies on shell a {\it physical individuation} of the mathematical points of
$M^4$ as point-events in terms of the non-local intrinsic degrees of freedom of
the gravitational field (Dirac observables). 3) A clarification of the notion
of {\it Bergmann observable} that leads to a main conjecture asserting the
existence of i) special Dirac observables which are also Bergmann observables;
ii) tensorial (scalar) gauge variables.
title: Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ°Ð¼Ð¸ Ð¸ ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ°Ð¼Ð¸ Ð½Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ð¸ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÐ¦ ÐÐµÐ´Ð¸Ð¡ÑÐ°ÑÂ»)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: Ð¤ÐµÐ´ÑÐ»Ð¸Ð½Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: ÑÑÑÐµÑÑ
ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ½Ð°Ñ ÑÐ¸ÑÑÐ°ÑÐ¸Ñ
ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ¾Ð¼
ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ¾Ð»Ð¾Ð³Ð¸Ñ
ÑÑÑÐµÑÑÐ¾ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐÐÐ Â«ÐÐ¦ ÐÐµÐ´Ð¸Ð¡ÑÐ°ÑÂ». Ð¦ÐµÐ»ÑÑ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ°ÑÐºÑÑÑÐ¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¿Ð¾Ð½ÑÑÐ¸Ð¹ Ð¿Ð¾ ÑÐµÐ¼Ðµ Â«ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ°Ð¼Ð¸ Ð¸ ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ½ÑÐ¼Ð¸ ÑÐ¸ÑÑÐ°ÑÐ¸ÑÐ¼Ð¸ Ð½Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ð¸Â» Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¿ÑÐ¸ÑÐ¸Ð½ Ð²Ð¾Ð·Ð½Ð¸ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ½ÑÑ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¹ Ð¸ ÑÑÑÐµÑÑÐ¾Ð² Ð² ÐÐÐ Â«ÐÐ¦ ÐÐµÐ´Ð¸Ð¡ÑÐ°ÑÂ», Ð´Ð»Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ð¿Ð¾ ÑÐ»ÑÑÑÐµÐ½Ð¸Ñ Ð¼Ð¸ÐºÑÐ¾ÐºÐ»Ð¸Ð¼Ð°ÑÐ° Ð² ÐºÐ¾Ð»Ð»ÐµÐºÑÐ¸Ð²Ðµ Ð¸ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÑÐ¾Ð²Ð½Ñ ÑÑÑÐµÑÑÐ° Ð½Ð° ÑÐ°Ð±Ð¾ÑÐµÐ¼ Ð¼ÐµÑÑÐµ. Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½Ð¾ ÑÐ°ÑÐºÑÑÐ²Ð°ÑÑÑÑ Ð²ÑÐµ Ð²Ð¸Ð´Ñ Ð¸ Ð¿ÑÐ¸ÑÐ¸Ð½Ñ Ð²Ð¾Ð·Ð½Ð¸ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ¾Ð² Ð¸ ÑÑÑÐµÑÑÐ¾Ð²ÑÑ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¹, ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð²ÑÑÐ¾Ð´Ð° Ð¸Ð· Ð½Ð¸Ñ, Ð¸ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸. Ð ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÐ»Ð¸ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð½ÐµÐ³Ð°ÑÐ¸Ð²Ð½ÑÐµ ÑÐ°ÐºÑÐ¾ÑÑ, Ð¼ÐµÑÐ°ÑÑÐ¸Ðµ Ð¿ÑÐ¾Ð´ÑÐºÑÐ¸Ð²Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð² ÐºÐ»Ð¸Ð½Ð¸ÐºÐµ Â«ÐÑÐ´Ð¶ÐµÑÐ½Ð°Ñ Ð¡ÑÐ¾Ð¼Ð°ÑÐ¾Ð»Ð¾Ð³Ð¸ÑÂ», Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½ÑÐµ Ð¿ÑÐ¸ÑÐ¸Ð½Ñ Ð²Ð¾Ð·Ð½Ð¸ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÐ»Ð¸ÐºÑÐ½ÑÑ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¹ Ð² ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÐµÐ¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸. ÐÑÐ»Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ Ð¼ÐµÑÑ Ð¿Ð¾ ÑÐ»ÑÑÑÐµÐ½Ð¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¸ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ°, Ð² ÑÐ¾Ð¼ ÑÐ¸ÑÐ»Ðµ Ð¸ Ð²Ð½ÐµÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð´Ð¾ÑÑÐ³Ð°.
General covariance and the objectivity of space-time point-events
Creators: name: L. Lusanna
name: M. Pauri
Publisher: name: INFN Open Access Repository
Year: 2005

description: "The last remnant of physical objectivity of space-time" is disclosed, beyond
the Leibniz equivalence, in the case of a continuous family of spatially
non-compact models of general relativity. The {\it physical individuation} of
point-events is furnished by the intrinsic degrees of freedom of the
gravitational field, (viz, the {\it Dirac observables}) that represent - as it
were - the {\it ontic} part of the metric field. The physical role of the {\it
epistemic} part (viz. the {\it gauge} variables) is likewise clarified. At the
end, a peculiar four-dimensional {\it holistic and structuralist} view of
space-time emerges which includes elements common to the tradition of both {\it
substantivalism} and {\it relationism}. The observables of our models undergo
real {\it temporal change} and thereby provide a counter-example to the thesis
of the {\it frozen-time} picture of evolution.
  Invited Contribution to the ESF 2004 Oxford Conference on Space-Time