43 research outputs found
Determination of the structure of Ne by full-microscopic framework
We perform the first quantitative analysis of the reaction cross sections of
Ne by C at 240 MeV/nucleon, using the double-folding model
(DFM) with the Melbourne -matrix and the deformed projectile density
calculated by the antisymmetrized molecular dynamics (AMD). To describe the
tail of the last neutron of Ne, we adopt the resonating group method
(RGM) combined with AMD. The theoretical prediction excellently reproduce the
measured cross sections of Ne with no adjustable parameters. The
ground state properties of Ne, i.e., strong deformation and a halo
structure with spin-parity , are clarified.Comment: 4 pages, 4 figures, 2 table
The Brieva-Rook Localization of the Microscopic Nucleon-Nucleus Potential
The nonlocality of the microscopic nucleon-nucleus optical potential is
commonly localized by the Brieva-Rook approximation. The validity of the
localization is tested for the proton+Zr scattering at the incident
energies from 65 MeV to 800 MeV. The localization is valid in the wide
incident-energy range.Comment: 20 pages, 8 figure
Deformation effect on total reaction cross sections for neutron-rich Ne-isotopes
Isotope-dependence of measured reaction cross sections in scattering of
Ne isotopes from C target at 240 MeV/nucleon is analyzed by
the double-folding model with the Melbourne -matrix. The density of
projectile is calculated by the mean-field model with the deformed Wood-Saxon
potential. The deformation is evaluated by the antisymmetrized molecular
dynamics. The deformation of projectile enhances calculated reaction cross
sections to the measured values.Comment: 6 pages, 4 figures, 2 table
Determination of 8B(p,gamma)9C reaction rate from 9C breakup
The astrophysical factor of the 8B(p,gamma)9C at zero energy, S18(0), is
determined from three-body model analysis of 9C breakup processes. The elastic
breakup 208Pb(9C,p8B)208Pb at 65 MeV/nucleon and the one-proton removal
reaction of 9C at 285 MeV/nucleon on C and Al targets are calculated with the
continuum-discretized coupled-channels method (CDCC) and the eikonal reaction
theory (ERT), respectively. The asymptotic normalization coefficient (ANC) of
9C in the p-8B configuration extracted from the two reactions show good
consistency, in contrast to in the previous studies. As a result of the present
analysis, S18(0) = 66 \pm 10 eVb is obtained.Comment: 5 pages, 3 figures, 3 table
Deformation of Ne isotopes in the island-of-inversion region
The deformation of Ne isotopes in the island-of-inversion region is
determined by the double-folding model with the Melbourne -matrix and the
density calculated by the antisymmetrized molecular dynamics (AMD). The
double-folding model reproduces, with no adjustable parameter, the measured
reaction cross sections for the scattering of Ne from C at
240MeV/nucleon. The quadrupole deformation thus determined is around 0.4 in the
island-of-inversion region and Ne is a halo nuclei with large
deformation. We propose the Woods-Saxon model with a suitably chosen
parameterization set and the deformation given by the AMD calculation as a
convenient way of simulating the density calculated directly by the AMD. The
deformed Woods-Saxon model provides the density with the proper asymptotic
form. The pairing effect is investigated, and the importance of the angular
momentum projection for obtaining the large deformation in the
island-of-inversion region is pointed out.Comment: 19 pages, 16 figures, 6 table
Asymmetry dependence of reduction factors from single-nucleon knockout of <font size=-1><sup>30</sup></font>Ne at ∼ 230 MeV/nucleon
published_or_final_versio
Cys34-cysteinylated human serum albumin is a sensitive plasma marker in oxidative stress-related chronic diseases
The degree of oxidized cysteine (Cys) 34 in human serum albumin (HSA), as determined by high performance liquid chromatography (HPLC), is correlated with oxidative stress related pathological conditions. In order to further characterize the oxidation of Cys34-HSA at the molecular level and to develop a suitable analytical method for a rapid and sensitive clinical laboratory analysis, the use of electrospray ionization time-of-flight mass spectrometer (ESI-TOFMS) was evaluated. A marked increase in the cysteinylation of Cys34 occurs in chronic liver and kidney diseases and diabetes mellitus. A significant positive correlation was observed between the Cys-Cys34-HSA fraction of plasma samples obtained from 229 patients, as determined by ESI-TOFMS, and the degree of oxidized Cys34-HSA determined by HPLC. The Cys-Cys34-HSA fraction was significantly increased with the progression of liver cirrhosis, and was reduced by branched chain amino acids (BCAA) treatment. The changes in the Cys-Cys34-HSA fraction were significantly correlated with the alternations of the plasma levels of advanced oxidized protein products, an oxidative stress marker for proteins. The binding ability of endogenous substances (bilirubin and tryptophan) and drugs (warfarin and diazepam) to HSA purified from chronic liver disease patients were significantly suppressed but significantly improved by BCAA supplementation. Interestingly, the changes in this physiological function of HSA in chronic liver disease were correlated with the Cys-Cys34-HSA fraction. In conclusion, ESI-TOFMS is a suitable high throughput method for the rapid and sensitive quantification of Cys-Cys34-HSA in a large number of samples for evaluating oxidative stress related chronic disease progression or in response to a treatment