Índice de diastase e pH como indicadores de qualidade do mel de Apis mellifera.

JIPE 2013

Espécies de Anastrepha (Diptera: Tephritidae) capturadas em armadilhas mcphail no estado do Amapá.

Resumos 1504-1

The tikhonov regularization method in elastoplasticity

The numeric simulation of the mechanical behaviour of industrial materials is widely used in the companies for viability verification, improvement and optimization of designs. The eslastoplastic models have been used for forecast of the mechanical behaviour of materials of the most several natures (see [1]). The numerical analysis from this models come across ill-conditioning matrix problems, as for the case to finite or infinitesimal deformations. A complete investigation of the non linear behaviour of structures it follows from the equilibrium path of the body, in which come the singular (limit) points and/or bifurcation points. Several techniques to solve the numerical problems associated to these points have been disposed in the specialized literature, as for instance the call Load controlled Newton-Raphson method and displacement controlled techniques. Although most of these methods fail (due to problems convergence for ill-conditioning) in the neighbour of the limit points, mainly in the structures analysis that possess a snapthrough or snap-back equilibrium path shape (see [2]). This work presents the main ideas formalities of Tikhonov Regularization Method (for example see [12]) applied to dynamic elastoplasticity problems (J2 model with damage and isotropic-kinetic hardening) for the treatment of these limit points, besides some mathematical rigour associated to the formulation (well-posed/existence and uniqueness) of the dynamic elastoplasticity problem. The numeric problems of this approach are discussed and some strategies are suggested to solve these misfortunes satisfactorily. The numerical technique for the physical problem is by classical Gelerkin method

Novos registros de hospedeiros para Bactrocera carambolae (Diptera: Tephritidae) no Estado do Amapá, Brasil.

Resumo simples

Índice de infestação de taperebá (Spondias monbin) por Anastrepha spp. (Dip., Tephritidae) em quatro municípios do estado do Amapá.

Resumo 1541-2

About Projections of Solutions for Fuzzy Differential Equations

In this paper we propose the concept of fuzzy projections on subspaces of , obtained from Zadeh's extension of canonical projections in , and we study some of the main properties of such projections. Furthermore, we will review some properties of fuzzy projection solution of fuzzy differential equations. As we will see, the concept of fuzzy projection can be interesting for the graphical representation of fuzzy solutions

Aspectos fisiológicos e agronômicos de feijoeiro comum cultivado sob condições de baixa disponibilidade hídrica.

O objetivo deste trabalho foi avaliar aspectos fisiológicos e agronômicos de genótipos de feijoeiro comum, com características contrastantes para tolerância à deficiência hídrica

Sensor noise in LISA Pathfinder: in-flight performance of the optical test mass readout

We report on the first subpicometer interferometer flown in space. It was part of ESA’s Laser Interferometer Space Antenna (LISA) Pathfinder mission and performed the fundamental measurement of the positional and angular motion of two free-falling test masses. The interferometer worked immediately, stably, and reliably from switch on until the end of the mission with exceptionally low residual noise of 32.0 + 2.4 - 1.7 ¿ ¿ fm / v Hz , significantly better than required. We present an upper limit for the sensor performance at millihertz frequencies and a model for the measured sensitivity above 200 mHz.Peer ReviewedPostprint (published version