Las estructuras de clase en América Latina: composición y cambios en la época neoliberal

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PLANINDEX: 101-001

Contiene resúmenes bibliográficos de documentos sobre planificación y desarrollo en América Latina, recogidos y procesados en el marco del Sistema de Información para la Planificación en América Latina y el Caribe (INFOPLAN).

Huella de carbono, exportaciones y estrategias empresariales frente al cambio climático

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Análise Genética de Características Reprodutivas Na Raça Brahman

Aiming to establish selection criteria for the Brahman cattle in Brazil, the objective of this paper was to estimate genetic and environmental parameters for birth weight (BW), gestation length (GL) and scrotal circumference at 365 (SC365), 455 (SC455) and 550 (SC 550) days of age, and relative efficiency of indirect versus direct selection for these traits. Data were obtained from 15 851 animals belonging to 16 herds in six states, enrolled in a genetic breeding program. (Co)variance and heritability coefficients and genetic and environmental correlations between traits were estimated by restricted maximum likelihood (REML) under a multi trait animal model. The model included as fixed effects the contemporary group and the age of cow at calving as a covariate (linear and quadratic), and as random the direct genetic, the permanent environmental and residual effects. For BW and GL it was also considered the maternal genetic effect as random. Estimates of direct heritabilities were 0.36, 0.29, 0.55, 0.43 and 0.40 for BW, GL, SC365, SC455 and SC550, respectively. Genetic correlations between BW and GL, GL and SC365, GL and SC455, GL and SC550, SC365 and SC455, SC365 and SC550 and SC455 and SC550, were respectively 0.06, 0.13, 0.20, 0.13, 0.96, 0.98 and 0.99. The heritabilities estimates for all traits indicated these show enough additive genetic variability to respond favorably to selection. For sexual precocity, the best option would be SC365, due to the high value of heritability and to indirect selection at this age being more efficient than direct selection for PE455.

Universality in Four-Boson Systems

We report recent advances on the study of universal weakly bound four-boson states from the solutions of the Faddeev-Yakubovsky equations with zero-range two-body interactions. In particular, we present the correlation between the energies of successive tetramers between two neighbor Efimov trimers and compare it to recent finite range potential model calculations. We provide further results on the large momentum structure of the tetramer wave function, where the four-body scale, introduced in the regularization procedure of the bound state equations in momentum space, is clearly manifested. The results we are presenting confirm a previous conjecture on a four-body scaling behavior, which is independent of the three-body one. We show that the correlation between the positions of two successive resonant four-boson recombination peaks are consistent with recent data, as well as with recent calculations close to the unitary limit. Systematic deviations suggest the relevance of range corrections. © 2012 Springer-Verlag.

The natural absence of RPA1N domain did not impair Leishmania amazonensis RPA-1 participation in DNA damage response and telomere protection.

We have previously shown that the subunit 1 of Leishmania amazonensis RPA (LaRPA-1) alone binds the G-rich telomeric strand and is structurally different from other RPA-1. It is analogous to telomere end-binding proteins described in model eukaryotes whose homologues were not identified in the protozoan's genome. Here we show that LaRPA-1 is involved with damage response and telomere protection although it lacks the RPA1N domain involved with the binding with multiple checkpoint proteins. We induced DNA double-strand breaks (DSBs) in Leishmania using phleomycin. Damage was confirmed by TUNEL-positive nuclei and triggered a G1/S cell cycle arrest that was accompanied by nuclear accumulation of LaRPA-1 and RAD51 in the S phase of hydroxyurea-synchronized parasites. DSBs also increased the levels of RAD51 in non-synchronized parasites and of LaRPA-1 and RAD51 in the S phase of synchronized cells. More LaRPA-1 appeared immunoprecipitating telomeres in vivo and associated in a complex containing RAD51, although this interaction needs more investigation. RAD51 apparently co-localized with few telomeric clusters but it did not immunoprecipitate telomeric DNA. These findings suggest that LaRPA-1 and RAD51 work together in response to DNA DSBs and at telomeres, upon damage, LaRPA-1 works probably to prevent loss of single-stranded DNA and to assume a capping function.

Structure and dynamics of the community of periphytic algae in a subtropical reservoir (state of São Paulo, Brazil)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da resistência à fratura de raízes fragilizadas reabilitadas por diferentes técnicas de construção de núcleos intra-radiculares

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Honduras: evolución económica durante 2002 y perspectivas para 2003

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Generación de ventajas comparativas y dinamismo industrial

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Governança global na Amazônia: o programa piloto para a Proteção das Florestas Tropicais do Brasil

A Amazônia deixou de ser apenas uma questão regional e nacional, tornandose decisivamente uma questão global. Envolta nas contradições do capitalismo global, tornou-se, ainda alvo de interesses e pressões externas, notadamente pelos recursos estratégicos e vitais que dispõe para a segurança planetária. O Programa Piloto para a Proteção das Florestas Tropicais do Brasil (PPG-7) surge como caso emblemático de inserção da Amazônia num esforço de governança global, processo esse orientado por uma multiplicidade de atores, coalizões e estratégias. Neste sentido, oriundo das lutas socioambientalistas, no plano da sociedade civil brasileira e dos movimentos transnacionais, o PPG-7 foi um componente importante de redefinição das políticas ambientais no Brasil, alargando a esfera pública e contribuindo para a germinação de uma sociedade civil global conectada por redes na Amazônia.

Disfunção temporomandibular na visão de profissionais e acadêmicos de odontologia

This paper presents the results of an applied qualitative study with dental students and professionals who work with people suffering from temporomandibular disorder. The aim was to investigate the way that dental practitioners and students perceive patients affected by this disorder, how they feel faced with the patients' suffering, and the importance they assign to a multidisciplinary approach, highlighting the treatments used. It is noteworthy that various factors are involved in the temporomandibular disorder framework, including emotional factors, as cited by the majority of the respondents. The data obtained indicated that the knowledge of the professionals and students related to caring for people with temporomandibular disorders was appropriate, however, important inadequacies were highlighted, such as the fact that professionals do not investigate the life history of the person in their psychosocial context.

Influência de características físicas e química dos materiais de abutments de implantes em zircônia e titânio na adesão e viabilidade de células epiteliais gengivaiS OBA-9

Pós-graduação em Reabilitação Oral - FOAR