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CLAS Collaboration,Pereira, S.A.,Mirazita, M.,Rossi, P.,De Sanctis, E.,Niculescu, G.,Niculescu, I.,Stepanyan, S.,Adhikari, K.P.,Aghasyan, M.,Anghinolfi, M.,Baghdasaryan, H.,Ball, J.,Battaglieri, M.,Be North-Holland Pub. Co 2010 Physics letters: B Vol.688 No.4
<P>Differential cross sections of the reaction gamma d -> K+Sigma(-)(p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to E-gamma similar to 1.8 GeV. the shape of the angular distribution is suggestive of the presence of s-channel production mechanisms. For E-gamma > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. These data can be used to constrain future analysis of this reaction. (c) 2010 Elsevier B.V. All rights reserved.</P>
The Corrosion Behavior of Anti-Graffiti Polyurethane Powder Coatings
( S. Rossi ),( M. Fedel ),( F. Deflorian ),( A. Feriotti ) 한국부식방식학회(구 한국부식학회) 2018 Corrosion Science and Technology Vol.17 No.6
Anti-graffiti coatings have become more important. These layers must guarantee excellent corrosion protection properties, and graffiti must be easily removable, without reducing protection and aesthetic properties. In this study, anti-graffiti and corrosion behavior of two anti-graffiti polyurethane powder coatings were studied. These layers were deposited on aluminum substrate, with two different surface finishes, smooth, and wrinkled. The action of four different removers are investigated. Graffiti were drawn on coatings by means of red acrylic spray paint. Methyl-ethyl-ketone (MEK) and a “commercial” remover were the most effective solvents, in terms of graffiti removal capability, producing limited change in aesthetical surface aspect for smooth finishing. The wrinkled surface was less resistant. Corrosion protection properties, after removal action and contact with the remover, were evaluate by electrochemical impedance spectroscopy. After approximately 5 hours, coatings were no longer protective due to formation of defects. To simulate the weathering effect, UV-B cyclic test (4 hours of UV exposure followed by 4 hours of saturated humidity at 50 °C) were performed for 2000 hours. Gloss and color changes were measured, and electrochemical impedance spectroscopy measurements were performed after aging and graffiti removal.
The National Centre for Oncological Hadron therapy (CNAO): Present Status and Future Perspectives
Rossi S. 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.77 No.5
Some elementary particles used for experiments of fundamental physics have properties useful to the treatments of patients affected by oncological pathologies. They are protons and carbon ions, collectively named hadrons, hence the term hadron therapy. Hadrons, in particular carbon ions, are more precise on the target than conventional X-rays and possess radiobiological characteristics suited to treat radioresistant or inoperable tumors. Italy is at the forefront of these techniques, and in Pavia a clinical facility called CNAO (Italian acronym that stands for National Centre for Oncological Hadron therapy) has treated so far more than 2800 patients with very good results. The CNAO was created by the Health Ministry and was realized by the CNAO Foundation in collaboration with the Italian Institute of Nuclear Physics (INFN), CERN, GSI and other institutions in Italy and abroad. The facility in Pavia delivers beams of hadrons in three treatment rooms with four fixed beam ports: three horizontal and one vertical. A new room, with an horizontal beamline and multiple isocenters, was completed and will be fully devoted to research applications. The CNAO has also launched a development programe to add a new single room for proton therapy with a gantry and a dedicated accelerator. Attention is also devoted to the most interesting aspects of research and development in the hadron therapy domain, like the creation of a new BNCT (Boron Neutron Capture Therapy) facility and the design of a novel gantry for carbon ions.
Agrestini, S.,Kuo, C.-Y.,Moretti Sala, M.,Hu, Z.,Kasinathan, D.,Ko, K.-T.,Glatzel, P.,Rossi, M.,Cafun, J.-D.,Kvashnina, K. O.,Matsumoto, A.,Takayama, T.,Takagi, H.,Tjeng, L. H.,Haverkort, M. W. American Physical Society 2017 Physical review. B Vol.95 No.20
<P>We have investigated the electronic structure of Sr2IrO4 using core-to-core resonant inelastic x-ray scattering. The experimental spectra can be well reproduced using ab initio density functional theory based multiplet ligand field theory calculations, thereby validating these calculations. We found that the low-energy, effective Ir t(2g) orbitals are practically degenerate in their crystal-field energy. We uncovered that Sr2IrO4 and iridates in general are negative charge transfer systems with large covalency and a substantial oxygen ligand hole character in the Ir t(2g) Wannier orbitals. This has far reaching consequences, as not only the on-site crystal-field energies are determined by the long-range crystal structure, but, more significantly, magnetic exchange interactions will have long-range distance dependent anisotropies in the spin direction. These findings set constraints and show pathways for the design of d(5) materials that can host compasslike magnetic interactions.</P>
Fabrício Eduardo Rossi,Ana Claudia S. Fortaleza,Lucas M. Neves,Tiego A. Diniz,Marcela R. de Castro,Camila Buonani,Jorge Mota,Ismael F. Freitas Junior 한국운동재활학회 2017 JER Vol.13 No.3
The aim of this study was to compare the effects of combined (CT; strength plus aerobic) and functional training (FT) on the body composition and metabolic profile with a similar training load in postmenopausal women. The participants were divided into three groups: CT (n= 20), FT (n= 17), and control group (CG, n= 15). The trunk FM, fat mass (FM), percentage of FM (FM%), and fat-free mass were estimated by dual-energy X-ray absorptiometry. The metabolic profile, glucose, triacylglycerol, total cholesterol, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol (LDL-c) were assessed. There were main effects of time in trunk fat, FM, and FM% (P< 0.05). There were statistically significant interaction for FM (P= 0.015), FM% (P= 0.017) with lower values for CT group. For LDL-c, there was significant interaction (P= 0.002) with greater values for FT group in relation to CG and CT. Furthermore, when performed the post hoc test on the “mean absolute differences” (Δ), it can observed statistically significant difference between FT, CT, and CG (-13.0± 16.5 mg/dL vs. 4.8± 18.4 mg/dL vs. 9.2± 18.8 mg/dL, P< 0.05). In conclusion, when training loads are equivalent CT potentiated a reduction in FM and FM%, however, only FT reduced LDL-c in postmenopausal women.