| 1. |
- Öhrn, Angelica, et al.
(författare)
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Elastic scattering of 96 MeV neutrons from iron, yttrium, and lead
- 2008
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Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 77:2, s. 024605-
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Tidskriftsartikel (refereegranskat)abstract
- Data on elastic scattering of 96 MeV neutrons from Fe-56, Y-89, and Pb-208 in the angular interval 10-70 degrees are reported. The previously published data on Pb-208 have been extended, as a new method has been developed to obtain more information from data, namely to increase the number of angular bins at the most forward angles. A study of the deviation of the zero-degree cross section from Wick's limit has been performed. It was shown that the data on Pb-208 are in agreement with Wick's limit while those on the lighter nuclei overshoot the limit significantly. The results are compared with modern optical model predictions, based on phenomenology and microscopic nuclear theory. The data on Fe-56, Y-89, and Pb-208 are in general in good agreement with the model predictions.
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| 2. |
- Vallenari, A., et al.
(författare)
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Synthetic stellar libraries and SSP simulations in the Gaia Era
- 2009
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Ingår i: Proceedings of the International Astronomical Union. ; , s. 444-445
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Konferensbidrag (refereegranskat)abstract
- The Gaia mission will obtain accurate positions, parallaxes and proper motions for 109 object all over the sky. In addition, it will collect low resolution spectroscopy in the optical range for ∼ 109 objects, stars, galaxies, and QSOs. Parameters of those objects are expected to be part of the final Catalog. Complete and up-to-date libraries of synthetic stellar spectra are needed to train the algorithms to classify this huge amount of data. Here we focus on the use of the synthetic libraries of spectra calculated by the Gaia community to derive grids of Single Stellar Populations as building blocks of population synthesis models. © International Astronomical Union 2010.
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| 3. |
- Bo, A D, et al.
(författare)
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Ethyl(hydroxyethyl)cellulose-sodium dodecanoate interaction investigated by surface tension and electrical conductivity techniques
- 2005
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Ingår i: Colloids and Surfaces A: Physicochemical and Engineering Aspects. - : Elsevier BV. - 0927-7757. ; 256:2-3, s. 171-180
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Tidskriftsartikel (refereegranskat)abstract
- Mixtures of ethyl (hydroxyethyl)cellulose (EHEC) and sodium dodecanoate (SDoD) were investigated using surface tension, conductivity and transmittance measurements. The parameters of the surfactant to polymer association processes such as the critical aggregation concentration (cac) and saturation of the polymer by SDoD (psp) were determined from the plots of surface tension and specific conductivity versus surfactant concentration. The transmittance versus [SDoD] profiles exhibited bands that, in conjunction with conductivity and surface tension data, gave support to the explanation of the behavior of EHEC-SDoD-water solutions. Transmittance bands determined in the presence of EHEC and surfactant are sensitive to the process of surfactant to polymer binding. In this process, a discontinuity point represented by a second broader peak in the transmittance plots was identified, implying a slight inhibition of the breakdown of the network process. This is explained as a kind of intermediate re-structural network of the complexes produced by the formation of regular SDoD micelles. It was demonstrated that the second conductivity breakpoint marks the polymer saturation by surfactant clusters, and the effect of the EHEC concentration on the process of binding can be described by a linear correlation when the psp breakpoint is plotted against the polymer concentration. (c) 2005 Elsevier B.V. All rights reserved.
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