Comparisons for Esta-Task3: Cles and Cesam

We present the results of comparing three different implementations of the microscopic diffusion process in the stellar evolution codes CESAM and CLES. For each of these implementations we computed models of 1.0, 1.2 and 1.3 M$_{\odot}$. We analyse the differences in their internal structure at three selected evolutionary stages, as well as the variations of helium abundance and depth of the stellar convective envelope. The origin of these differences and their effects on the seismic properties of the models are also considered.Comment: 10 pages, 8 figures, Joint HELAS and CoRoT/ESTA Workshop on Solar/Stellar Models and Seismic Analysis Tools, Novembre, Porto 2007 To be published in EAS Publications Serie

Does solar structure vary with solar magnetic activity?

We present evidence that solar structure changes with changes in solar activity. We find that the adiabatic index, Gamma_1, changes near the second helium ionization, i.e., at a depth of about 0.98 R_sun. We believe that this change is a result of the change in the effective equation of state caused by magnetic fields. Inversions should be able to detect the changes in Gamma_1 if mode sets with reliable and precise high-degree modes are available.Comment: To appear in ApJ Letter

Injúria ao milho Bt Cry1Ab causada por populações de Spodoptera frugiperda previamente expostas à toxina.

Resumo

A concern visualization approach for improving MATLAB and octave program comprehension

The literature has pointed out the need for focusing efforts to better support comprehension of MATLAB and Octave programs. Despite being largely used in the industry and academia in the engineering domain, programs and routines written in those languages still require efforts to propose approaches and tools for its understanding. Considering the use of crosscutting concerns (CCCs) to support the comprehension of object-oriented programs, there is room of its use in the context of MATLAB and Octave programs. The literature has purpose and examples in this direction. Considering this scenario, we propose the use of visualization enriched with CCCs representation to support the comprehension of such programs. This paper discusses the use of a multiple view interactive environment called OctMiner in the context of two case studies to characterize how collected information relating to crosscutting concerns can foster the comprehension of MATLAB and GNU/Octave programs. As a result of the conducted case studies, we propose strategies based on OctMiner and tailored to support different comprehension activities of programs written in MATLAB and Octave.info:eu-repo/semantics/acceptedVersio

Análise multitemporal da Área de Proteção Ambiental de Belém e Parque Ambiental de Belém.

Mesmo com mecanismos legais que amparam legalmente as unidades de proteção, ainda assim, as restrições que a legislação, vigente desde julho do ano 2000, impõe através do Sistema Nacional de Unidades de Conservação SNUC, é notável a ameaça aos reservatórios de abastecimento de água do Parque Ambiental de Belém, assim como aos recursos florestais da Área de Proteção Ambiental, devido a intensa pressão exercida no entorno e no interior das unidades por meio de habitações clandestinas e atividades ilegais. Contudo, fez-se necessário a utilização de técnicas e produtos do sensoriamento remoto para que fosse possível a identificação, entre os anos de 1984 a 2008, dos efeitos da pressão urbana sobre os recursos ambientais das unidades supracitadas

Barriers to physical activity in the elderly

Hoy en día, la población de edad avanzada es consciente de los beneficios de la práctica de la actividad física, lo que conduce a una creciente demanda de programas especializados de actividad física en los centros urbanos o de auto-práctica recreativa. Sin embargo, estas personas abandonan fácilmente esos programas o la práctica recreativa y vuelven a un estilo de vida sedentario. Un factor clave para evitar esta omisión es mantenerlos motivados para practicar y permanecer en los programas. Objetivos: Este estudio tiene como objetivo comprender los factores motivacionales que llevan a las personas mayores a la actividad física a fin de mejorar los programas existentes para satisfacer mejor las necesidades de esta población.Nowadays the elderly population is well aware of the benefits of the practice of physical activity, which leads to an increasing demand for specialized physical activity programs in urban centers or recreational self-practice. However, people easily quit those programs or recreational self-practice and return to a sedentary lifestyle. A key factor to avoid this quittance is to keep them motivated to practice and stay in the programs. Objectives: This study aims to understand the motivational factors that lead older people to physical activity in order to improve existing programs so to better meet the needs of this population.peerReviewe

NEAR-SURFACE EFFECTS IN MODELLING OSCILLATIONS OF ETA BOO

Following the report of solar-like oscillations in the G0 V star eta Boo (Kjeldsen et al. 1995, AJ 109, 1313), a first attempt to model the observed frequencies was made by Christensen-Dalsgaard et al. (1995, ApJ Letters, in press). This attempt succeeded in reproducing the observed frequency separations, although there remained a difference of about 10 microHz between observed and computed frequencies. In those models, the near-surface region of the star was treated rather crudely. Here we consider more sophisticated models that include non-local mixing-length theory, turbulent pressure and nonadiabatic oscillations.Comment: uuencoded and compressed Postscript (2 pages, including figure); To appear in Proceedings of IAU Colloquium 155, "Astrophysical Applications of Stellar Pulsation", Cape Town, South Afric