A new functional for charge and mass identification in Delta E-E telescopes

We propose a new functional for the charge and mass identification in Delta E-E telescopes. This functional is based on Bethe's formula, allowing safe interpolation or extrapolation in regions with low statistics. When applied to telescopes involving detectors delivering a linear response, as silicon detectors or ionization chambers, a good mass and charge identification is achieved. For other detectors, as caesium-iodide used as a final member of a telescope, a good accuracy is also obtained except in the low residual energy region. A good identification is however recovered if a non-linear energy dependence of the light output is included.Comment: 16 pages, 8 figures, LaTeX2e + EPS figures reduced in size Submitted to Elsevie

The importance of ancillary insurance benefits by members of Medicare risk contract insurance plan

Thesis (D.Sc.D.)--Boston University, Henry M. Goldman School of Dental Medicine, 2000.Includes bibliographical references (leaves 63-75)

Fine structure of the 0.7 MeV resonance in the 230Th neutron--induced cross section

The fine structure of the 0.7 MeV resonance in the 230Th neutron-induced cross section is investigated within the hybrid model. A very good agreement with experimental data is obtained. It is suggested that fine structure of the cross section quantify the changes of the intrinsic states of the nucleus during the disintegration process.Comment: 7 pages, 5 figure

Effect of nuclear periphery on nucleon transfer in peripheral collisions

A comparison of experimental heavy residue cross sections from the reactions 86Kr+64Ni,112,124Sn with the model of deep-inelastic transfer (DIT) is carried out. A modified expression for nucleon transfer probabilities is used at non-overlapping projectile-target configurations, introducing a dependence on isospin asymmetry at the nuclear periphery. The experimental yields of neutron-rich nuclei close to the projectile are reproduced better and the trend deviating from the bulk isospin equilibration is explained. For the neutron-rich products further from the projectile, originating from hot quasiprojectiles, the statistical multifragmentation model reproduces the mass distributions better than the model of sequential binary decay. In the reaction with proton-rich target 112Sn the nucleon exchange appears to depend on isospin asymmetry of nuclear periphery only when surface separation is larger than 0.8 fm due to the stronger Coulomb interaction at more compact di-nuclear configuration.Comment: LaTeX, 13 pages, 7 figures, to appear in Nuclear Physics

CONFLITTI SOCIO-AMBIENTALI “ORIZZONTALI”: gli “indiretti” e la Reserva Extrativista Quilombo do Frechal (Maranhão)

Baseado numa pesquisa etnográfica conduzida na Reserva Extrativista Quilombo do Frechal (Maranhão, Brasil) em 2006, esse artigo propõe uma analise antropológica dos conflitos que emergiram depois da instituição dessa área como protegida, numa perspectiva “sócio-ambientalista”. A criação da reserva, habitada por uma comunidade amazônica de quilombolas, pôs fim a um longo período de luta contra o fazendeiro local. Entretanto, inesperadamente, lançou as bases de novas formas de conflito entre Frechal e as pessoas que ficaram fora dos confins da reserva e sem nenhum direito de acesso aos recursos naturais daquela área. A análise desse caso sublinha a importância de focalizar a atenção não somente sobre os clássicos conflitos socioambientais “verticais” entre comunidades locais e estado ou empresas, em relação ao uso do meio ambiente, mas também sobre aqueles ‘horizontais”, envolvendo  comunidades locais que compartilham o mesmo status socioeconômico. Ao mesmo tempo, esse artigo aponta a relevância de considerar as dinâmicas sociais que acontecem não somente dentro uma área protegida, mas também fora dessa, tendo em consideração as consequências da presença dela no mais amplo contexto municipal. Essa contribuição mostra como a dimensão politica desse conflito não pode ser completamente compreendida sem considerar a complexa sedimentação de diferentes concepções da apropriação da natureza e as regras consuetudinárias de uso do mato. ABSTRACTBased on an ethnographic research conducted in the Reserva Extrativista Quilombo do Frechal (Maranhão, Brazil) in 2006, this paper proposes an anthropological analysis of the conflicts emerged after the institution of this “socio-environmentalist” protected area. The creation of the reserve, inhabited by a community of Amazonian descendants of African slaves (quilombolas), put an end to a long period of fight against a local nester. Meanwhile, it unexpectedly laid the basis for new forms of conflict between Frechal and the people remained out of the borders of reserve and without any right of access to natural resources of that area. This case-study underlines the importance of focusing the attention not only on classic “vertical” socio-environmental conflicts over the use of the natural environment between local communities and states or enterprises but also on “horizontal” ones, involving local communities that share the same socio-economic status. At the same time, this paper highlights the relevance of considering the social dynamics that occur not only inside a protected area, but also outside of it, by taking into account the consequences of its presence in the wider municipal context. This contribution will show how the political dimension of this conflict cannot be completely understood without considering the complex sedimentation of different conceptions of appropriation of nature and the customary rules of use of the forest.KEYWORSSocio-Environmental Conflicts; Territory; Natural Resource; Political Ecolog