Search results for "CCR"

Multiwavelength diagnostics of accretion in an X-ray selected sample of CTTSs

2011

Context. High resolution X-ray spectroscopy has revealed soft X-rays from high density plasma in classical T Tauri stars (CTTSs), probably arising from the accretion shock region. However, the mass accretion rates derived from the X-ray observations are consistently lower than those derived from UV/optical/NIR studies. Aims: We aim to test the hypothesis that the high density soft X-ray emission originates from accretion by analysing, in a homogeneous manner, optical accretion indicators for an X-ray selected sample of CTTSs. Methods: We analyse optical spectra of the X-ray selected sample of CTTSs and calculate the accretion rates based on measuring the Hα, Hβ, Hγ, He ii 4686 Å, He i 5016 …

Imperfect accretion: ejecting matter in X-ray binaries

2021

X-ray binaries are binary stars composed of a compact object (a black hole, a neutron star) accreting matter from a companion star. These sources can be considered perfect astrophysical laboratories to test our knowledge of, e.g., General Relativity and Magneto-Hydrodynamics. Accretion is the key phenomenon characterizing these systems, but it is not always completely efficient. In many systems, ejections of matter are also observed, e.g. in the form of jets and winds, or also suggested, e.g. to explain the observed strong orbital expansion of a number of systems. Furthermore accretion and ejection seems to be somehow interconnected but the nature of this correlation is not completely clear…

Accretion onto Neutron Stars: spectral and timing investigation of Low Mass X-ray Binaries

2021

Deficit di GH e scarso accrescimento in fibrosi cistica: associazione casuale o causale ?

2014

MVK E DEFICIT ACCRESCITIVO IN BAMBINA NATA SGA

2019

I pazienti in età evolutiva affetti da Deficit di Mevalonato kinasi (MVK), caratterizzato nelle forme clinicamente più gravi da alterazioni neurologiche, ritardo psicomotorio, mancanza di coordinazione dei movimenti, disturbi visivi, possono sviluppare un deficit accrescitivo severo, secondario allo stato infiammatorio. Nei pazienti con S. da iper IgD (HIDS) la crescita è, in genere, garantita e, in caso di bassa statura, vanno escluse altre cause. I pazienti con HIDS, per la parzialità del deficit enzimatico, hanno una clinica più sfumata (febbre ricorrente, linfoadenopatia, dolori addominali, vomito, diarrea, artralgie, cefalea, rash cutanei, ulcere della bocca ed epatosplenomegalia). Des…

Valutazione dei requisiti per l’accreditamento nell’azienda ospedaliera universitaria -

2006

Il ruolo della cartella clinica ai fini della valutazione della qualità per l'accreditamento istituzionale

2009

The authors carried out research aimed at evaluating the quality of some aspects of a sample of medical records compiled in the operational uniti of a hospital. A subjective evaluation criterion was used, quantified by attibuting a correct numeric value by means of a weightingdeliberation factor. None of the medical record examined were judget qualitatively excellent. The main fact missing was the documentation regarding consensus, even in those medical records judget good or sufficient.

From Cash to Accrual Accounting: The seminal case of the Sicilian Regional Public Bodies

2019

The Italian public sector has been traditionally characterised by a cash-based and compliance-oriented governmental accounting, principally aimed at supporting the budgetary control by the legislative body. Over the last few decades, however, a new movement has been spreading around the world, casting doubt on the potentialities and advantages of the traditional accounting system in favour of an accrual basis one. This paper traces the progressive introduction of a complete accrual accounting by the Sicilian Regional public bodies – within the context of international and national public management changes – pursuing the ultimate goal to improve efficiency, accountability and transparency. …

Accretionary growth and crust formation in the Central Asian Orogenic Belt and comparison with the Arabian-Nubian shield

2007

Kroner, A., Windley, B.F., Badarch, G., Tomurtogoo, O., Hegner, E., Jahn, B.M., Gruschka, S., Khain, E.V., Demoux, A., and Wingate, M.T.D., 2007, Accretionary growth and crust formation in the Central Asian Orogenic Belt and comparison with the Arabian-Nubian shield, in Hatcher, R.D., Jr., Carlson, M.P., McBride, J.H., and Martinez Catalan, J.R., eds., 4-D Framework of Continental Crust: Geological Society of America Memoir 200, p. 181–209, doi: 10.1130/2007.1200(11). For permission to copy, contact editing@geosociety.org. ©2007 The Geological Society of America. All rights reserved. *Kroner: kroener@mail.uni-mainz.de; Windley: brian.windley@btinternet.com; Tomurtogoo: igmr@magicnet.mn; Heg…

Testing jet geometries and disc-jet coupling in the neutron star LMXB 4U 0614 + 091 with the internal shocks model

2020

Multi-wavelength spectral energy distributions of Low Mass X-ray Binaries in the hard state are determined by the emission from a jet, for frequencies up to mid-infrared, and emission from the accretion flow in the optical to X-ray range. In the last years, the flat radio-to-mid-IR spectra of Black Hole (BH) X-ray binaries was described using the internal shocks model, which assumes that the fluctuations in the velocity of the ejecta along the jet are driven by the fluctuations in the accretion flow, described by the X-ray Power Density Spectrum (PDS). In this work we attempt to apply this model for the first time to a Neutron Star (NS) LMXB, i.e. 4U 0614+091. We used the multi-wavelength d…