Determining Heavy Mass Parameters in Supersymmetric SO(10) Models

Extrapolations of soft scalar mass parameters in supersymmetric theories can be used to explore elements of the physics scenario near the grand unification scale. We investigate the potential of this method in the lepton sector of SO(10) which incorporates right-handed neutrino superfields. The method is exemplified in two models by exploring limits on the precision that can be expected from coherent LHC and e+e- collider analyses in the reconstruction of the fundamental scalar mass parameters at the unification scale and of the D-terms related to the breaking of grand unification symmetries. In addition, the mass of the third-generation right-handed neutrino can be estimated in seesaw scenarios. Even though the models are simplified and not intended to account for all aspects of a final comprehensive SO(10) theory, they provide nevertheless a valid base for identifying essential elements that can be inferred on the fundamental high-scale theory from high-energy experiments.Comment: 26 pp LaTeX; version published in Phys. Rev.

Quark core formation in spinning-down pulsars

Pulsars spin-down due to magnetic torque reducing its radius and increasing the central energy density. Some pulsar which are born with central densities close to the critical value of quark deconfinement may undergo a phase transition and structural re-arrengement. This process may excite oscillation modes and emmit gravitational waves. We determine the rate of quark core formation in neutron stars using a realistic population synthesis code.Comment: Proceedings of the 2nd International Workshop on Astronomy and Relativistic Astrophysics, to appear in IJMP

Expected Coalescence Rate of Double Neutron Stars for Ground Based Interferometers

In this paper we present new estimates of the coalescence rate of neutron star binaries in the local universe and we discuss its consequences for the first generations of ground based interferometers. Our approach based on both evolutionary and statistical methods gives a galactic merging rate of 1.7 10$^{-5}$ yr$^{-1}$, in the range of previous estimates 10$^{-6}$ - 10$^{-4}$ yr$^{-1}$. The local rate which includes the contribution of elliptical galaxies is two times higher, in the order of 3.4 10$^{-5}$ yr$^{-1}$. We predict one detection every 148 and 125 years with initial VIRGO and LIGO, and up to 6 events per year with their advanced configuration. Our recent detection rate estimates from investigations on VIRGO future improvements are quoted.Comment: talk given at the GWDAW9 (Annecy, 2004) to be published in CQ

Correlações entre caracteres físico-químicos avaliados em acerolas de diferentes estádios de maturação.

O presente trabalho objetivou estimar e analisar as correlações entre caracteres físico-químicos de frutos aceroleira

Balanço energético e proteico de rações para suínos machos, inteiros e castrados, de diferentes raças e pesos.

Determinar o efeito do sexo( animais inteiros e castrados) da raça(Landrace, Large white e cruza landrace X large white) e dos pesos ou períodos sobre o balanço energético e proteico de uma ração que tinha por base milho e farelo de soja para suínos

Analysing people's movement in the built environment via space syntax, objective tracking and gaze data

In this paper we use analysis tools from Space Syntax and objective observation of the human behaviour, to understand the impact of landmarks in the walking patterns of users of spaces. Our case study was a large exterior public open space (University Campus), in which participants could walk freely and simultaneously be tracked by several sensors. We carried Space Syntax analysis for this space, and then collected Global Positioning System (GPS) tracking information and used a mobile eye-tracking device to acquire eye gaze information. The collected data allowed us to map and analyse each subject behaviour in the public space. A more specific analysis was done to four selected landmarks that, according to the Space Syntax analysis, were the ones with higher integration values. Results indicate that landmarks with such higher integration values show also a larger count of fixations and saccades of gaze interaction.info:eu-repo/semantics/publishedVersio

Analise morfométrica das conchas e rendimento da carne de Anomalocardia brasiliana no estuário adjacente a Praia de Barra Grande, Cajueiro da Praia – PI.

Apesar da elevada importância ambiental, econômica, social e cultural, não existem estudos voltados para a pesca de moluscos bivalves no litoral piauiense. Esse estudo teve como objetivo avaliar a morfometria e o rendimento de carne do bivalve marinho venerídeo Anomalocardia brasiliana. Exemplares de Abrasiliana foram coletados em cinco pontos distantes 200 metros entre si, em estuário próximo a Praia de Barra Grande-PI, durante a maré baixa de sizígia. A temperatura e salinidade da água foram medidas na margem dos pontos de coleta com utilização de sonda multiparâmetros. Em cada amostragem foi coletado sedimento para análise de pH e matéria orgânica. Os parâmetros abióticos foram semelhantes nos pontos de coleta. A análise morfométrica determinou valores de comprimento de concha acima de 16 mm, indicando que os exemplares coletados foram todos adultos. O rendimento determinado esteve entre 6 a 12%, variando conforme o peso total da concha fechada das amostras. O baixo rendimento encontrado para A. brasiliana, em exemplares com comprimento de concha entre 16 e 20 mm, justifica o desenvolvimento de estudos que avaliem formas de agregação de valor ao produto.CBO2010