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Search Results: 1 - 10 of 208414 matches for " L. Iurescu "
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Diabetes Mellitus após Terapêutica com Peginterfer o-Alfa 2a para Hepatite Viral C Crónica
M. J. Osório,L. Iurescu,L. Bagulho,C. Marques
Jornal Português de Gastrenterologia , 2007,
Abstract: Tem sido descrita na literatura a existência de uma rela o entre Hepatite Viral C Crónica e Diabetes mellitus tipo II, devido à hepatopatia crónica ou uma sua manifesta o extra-hepática. O aparecimento de Diabetes mellitus tipo 1 em doentes medicados com interfer o-alfa tem sido recentemente relacionado com o aparecimento de anticorpos anti-pancreáticos ou com o aumento da sua titula o. Este artigo ilustra um caso de diabetes mellitus tipo 1 inaugural, grave, 5 meses após ter sido iniciada terapêutica combinada com peginterfer o-alfa e ri-bavirina. O nosso objectivo é interrogar a importancia da avalia o prévia do risco da ocorrência de diabetes mellitus durante o tratamento da hepatite viral. It has been reported the existence of an association between Chronic Viral Hepatitis C and type 2 Diabetes mellitus, probably as a manifestation of the chronic hepatic disease and/or one of its extra-hepatic manifestations. Recently, it has been reported the appearance of type 1 Diabetes mellitus after treatment with interferon-alpha, associated with the appearance of anti-pancreatic antibodies or with an increase in their titration. We pretend to illustrate a severe case of new-onset type 1 diabetes mellitus, 5 months after combined treatment with interferon-alpha and ribavirin. Our objective is to enhance the importance of evaluate the risk of developing diabetes mellitus with the treatment.
Diabetes Mellitus após Terapêutica com Peginterfer?o-Alfa 2a para Hepatite Viral C Crónica
Osório,M. J.; Iurescu,L.; Bagulho,L.; Marques,C.; Esteves,J.; Almeida,J.; Matias,T.;
Jornal Português de Gastrenterologia , 2007,
Abstract: it has been reported the existence of an association between chronic viral hepatitis c and type 2 diabetes mellitus, probably as a manifestation of the chronic hepatic disease and/or one of its extra-hepatic manifestations. recently, it has been reported the appearance of type 1 diabetes mellitus after treatment with interferon-alpha, associated with the appearance of anti-pancreatic antibodies or with an increase in their titration. we pretend to illustrate a severe case of new-onset type 1 diabetes mellitus, 5 months after combined treatment with interferon-alpha and ribavirin. our objective is to enhance the importance of evaluate the risk of developing diabetes mellitus with the treatment.
Helicity Signatures in Subthreshold rho Production on Nuclei
G. J. Lolos,G. M. Huber,A. Shinozaki,Z. Papandreou,E. J. Brash,K. Hossain,M. Iurescu,D. Nordin,G. Garino,K. Maruyama,K. Maeda,T. Suda,A. Toyofuku,A. Sasaki,H. Yamashita
Physics , 2001,
Abstract: We report a helicity analysis of subthreshold rho production on 2H and 12C nuclei at low photoproduction energies and large |t|. The results are indicative of a large longitudinal rho polarization (l=1, m=0) and are consistent with a strong helicity-flip mechanism of rho production. The analysis is model-independent and supports the large mass shift reported from the earlier 3He experiments.
In-Medium rho^0 Spectral Function Study via the 2H, 3He, 12C(gamma,pi+pi-) Reaction
G. M. Huber,G. J. Lolos,Z. Papandreou,A. Shinozaki,E. J. Brash,M. Iurescu,G. Garino,K. Maruyama,K. Maeda,T. Suda,A. Toyofuku,B. K. Jennings,A. Sasaki,H. Yamashita
Physics , 2003, DOI: 10.1103/PhysRevC.68.065202
Abstract: We report a helicity analysis of sub-threshold rho^0 production on 2H, 3He and 12C at low photo-production energies. The results are indicative of a large longitudinal rho^0 polarization (l=1, m=0) and are consistent with a strong helicity-flip production mechanism. This signature is used to extract in-medium rho^0_L invariant mass distributions for all three nuclei in a manner which is less model-dependent than previous measurements. The results are compared to kinematic and phenomenological models of the rho^0 spectral function. The 2H and 3He data distributions support the role of N*(1520) excitation in shaping the in-medium rho^0_L invariant mass distribution, while the 12C distributions are consistent with quasi-free rho^0_L production. The data support an in-medium modification of the rho^0_L invariant mass distribution.
Probing the DeltaNN component of 3He
G. M. Huber,G. J. Lolos,E. J. Brash,S. Dumalski,F. Farzanpay,M. Iurescu,Z. Papandreou,A. Shinozaki,A. Weinerman,T. Emura,H. Hirosawa,K. Niwa,H. Yamashita,K. Maeda,T. Terasawa,H. Yamazaki,S. Endo,K. Miyamoto,Y. Sumi,G. Garino,K. Maruyama,A. Leone,R. Perrino,T. Maki,A. Sasaki,Y. Wada
Physics , 1999, DOI: 10.1103/PhysRevC.62.044001
Abstract: The 3He(gamma,pi^+/- p) reactions were measured simultaneously over a tagged photon energy range of 800
Subthreshold rho^0 photoproduction on 3He
TAGX Collaboration,M. A. Kagarlis,Z. Papandreou,G. M. Huber,G. J. Lolos,A. Shinozaki,E. J. Brash,F. Farzanpay,M. Iurescu,A. Weinerman,G. Garino,K. Maruyama,O. Konno,K. Maeda,T. Terasawa,H. Yamazaki,T. Emura,H. Hirosawa,K. Niwa,H. Yamashita,S. Endo,K. Miyamoto,Y. Sumi,A. Leone,R. Perrino,T. Maki,A. Sasaki,J. C. Kim
Physics , 1998, DOI: 10.1103/PhysRevC.60.025203
Abstract: A large reduction of the rho^0 mass in the nuclear medium is reported, inferred from dipion photoproduction spectra in the 1 GeV region, for the reaction 3He(gamma,pi+ pi-)X with a 10% duty factor tagged-photon beam and the TAGX multi-particle spectrometer. The energy range covered (800 < E(gamma) < 1120 MeV) lies mostly below the free rho^0 production threshold, a region which is believed sensitive to modifications of light vector-meson properties at nuclear-matter densities. The rho^0 masses extracted from the MC fitting of the data, m*(rho^0) = 642 +/- 40, 669 +/- 32, and 682 +/- 56 MeV/c^2 for E(gamma) in the 800-880, 880-960, and 960-1040 MeV regions respectively, are independently corroborated by a measured, assumption-free, kinematical observable. This mass shift, far exceeding current mean-field driven theoretical predictions, may be suggestive of rho^0 decay within the range of the nucleonic field.
Computing Reachable Sets as Capture-Viability Kernels in Reverse Time  [PDF]
No?l Bonneuil
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.311219
Abstract: The set SF(x0;T) of states y reachable from a given state x0 at time T under a set-valued dynamic x’(t)∈F(x (t)) and under constraints x(t)∈K where K is a closed set, is also the capture-viability kernel of x0 at T in reverse time of the target {x0} while remaining in K. In dimension up to three, Saint-Pierre’s viability algorithm is well-adapted; for higher dimensions, Bonneuil’s viability algorithm is better suited. It is used on a large-dimensional example.
Three Dimensional Evolution of SN 1987A in a Self-Gravitating Disk  [PDF]
L. Zaninetti
International Journal of Astronomy and Astrophysics (IJAA) , 2013, DOI: 10.4236/ijaa.2013.32010
Abstract:

The introduction of an exponential or power law gradient in the interstellar medium (ISM) allows to produce an asymmetric evolution of the supernova remnant (SNR) when the framework of the thin layer approximation is adopted. Unfortunately both the exponential and power law gradients for the ISM do not have a well defined physical meaning. The physics conversely is well represented by an isothermal self-gravitating disk of particles whose velocity is everywhere Maxwellian. We derived a law of motion in the framework of the thin layer approximation with a control parameter of the swept mass. The photon’s losses, which are often neglected in the thin layer approximation, are modeled trough velocity dependence. The developed framework is applied to SNR 1987A and the three observed rings are simulated.

The Luminosity Function of Galaxies as Modeled by a Left Truncated Beta Distribution  [PDF]
L. Zaninetti
International Journal of Astronomy and Astrophysics (IJAA) , 2014, DOI: 10.4236/ijaa.2014.41013
Abstract: A first new luminosity function of galaxies can be built starting from a left truncated beta probability density function, which is characterized by four parameters. In the astrophysical conversion, the number of parameters increases by one, due to the addition of the overall density of galaxies. A second new galaxy luminosity function is built starting from a left truncated beta probability for the mass of galaxies once a simple nonlinear relationship between mass and luminosity is assumed; in this case the number of parameters is six because the overall density of galaxies and a parameter that regulates mass and luminosity are added. The two new galaxy luminosity functions with finite boundaries were tested on the Sloan Digital Sky Survey (SDSS) in five different bands; the results produce a better fit than the Schechter luminosity function in two of the five bands considered. A modified Schechter luminosity function with four parameters has been also analyzed.
On the Dark Matter’s Halo Theoretical Description  [PDF]
L. M. L. M. Chechin
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.35052
Abstract: We argued that the standard field scalar potential couldn’t be widely used for getting the adequate galaxies’ curve lines and determining the profiles of dark matter their halo. For discovering the global properties of scalar fields that can describe the observable characteristics of dark matter on the cosmological space and time scales, we propose the simplest form of central symmetric potential celestial-mechanical type, i.e. U(φ) = –μ/φ. It was shown that this potential allows get rather satisfactorily dark matter profiles and rotational curves lines for dwarf galaxies. The good agreement with some previous results, based on the N-body simulation method, was pointed out. A new possibility of dwarf galaxies’ masses estimation was given, also.
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