10 documents found, page 1 of 1

Development and characterization of single polymer composites prepared by compr...

In the present study, novel polyamide 6 based woven single polymer composites (WSPC) were developed by powder-coating of woven textile structures with polyamide 6 empty microcapsules (EMC) and subsequent compression molding. To synthesize EMC, activated anionic ring-opening polymerization of ε-caprolactam by solution/precipitation was applied. Stitched plain fabrics that are promising novel class of woven fabri...

Estimation models for the refractive index response curve of EFBGs

Estimation models for the surrounding refractive index response of EFBGs were developed from computer simulations and tested on experimental data. Numerical simulations were used to investigate the fundamental core mode’s effective refractive index dependence with the fiber radius and the surrounding refractive index. An empirical mathematical model was developed upon the simulation results, and it was used to ...

Mechano-morphological studies of polyamide 6 based single polymer laminate comp...

Single polymer laminate composites based on polyamide 6 (PA6) were prepared by two methods: (i) reactive injection molding and (ii) powder coating/compression molding, both carried out in the presence of PA6 woven textile plies. The effect of the textile volume fraction Vf on the tensile properties of all composites was investigated. The laminates obtained by powder coating/compression molding displayed best me...

Comparative mechano-morphological studies on polyamide 6 based single polymer l...

Single polymer composites (SPC) based on polyamide 6 (PA6) are developed via nylon reactive injection molding (NYRIM) or powder coating/compression molding (PCCM) in the presence of PA6 woven textile plies. The effect of fiber volume fraction of textile on the tensile properties of the SPC resulting from both molding techniques were investigated and compared. Polarizing light microscopy (PLM) was applied to det...

Emotion regulation in childhood: Delimitation and definition

This article makes a conceptual and theoretical review of emotion regulation, as well as empirical studies associated with correlates and psychosocial adjustment indicators. Within Developmental Psychology, this article aims to contribute to the definition and delimitation of emotion regulation in childhood. To do this, we begin by making a historical overview of its study; then we seek to delimitate the term o...

26th International Conference on Plastic Optical Fibres Proceedings

CUIDADOS NO ALÍVIO DA DOR: PERSPECTIVA DA PARTURIENTE

O medo da dor do trabalho de parto é algo que apavora muitas mulheres e as condiciona de forma negativa para o momento mais importante das suas vidas. Sendo a maternidade um processo complexo e de alto significado para a futura mãe, com relevância para o período que antecede o parto e o próprio parto em si, pensa-se ser de extrema importância conhecer a percepção da parturiente sobre a assistência de enfermagem...

Degradação de fibras ópticas devido à propagação de sinais de elevada intensidade

The propagation of high power signals in optical fibers can lead to the fibre degradation and destruction. In this work we study three forms of degradation resulting from the high optical power propagation: i) increasing of the fiber coating temperature for bending situation; ii) degaradation of optical connectors; and iii) ignition and propagation of the fuse effect that can lead to the destruction of the opti...

Solving the Traveling Repairman problem with differentiated waiting times throu...

In this paper we present a formulation of the traveling repairman problem with di®erentiated waiting times that is derived from the extended disaggregated °ow formulation for the asymmetric traveling salesman problem. We focus on the usage of the Lagrangian approach as a mechanism of speeding up the solution of the linear relaxation by a simplex method. We show some computational results.

Aplicação do algoritmo volumétrico na resolução aproximada e exacta do problema...

Neste artigo apresentamos resultados computacionais obtidos com o algoritmo volumétrico, uma variante do método do subgradiente, na resolução da relaxação linear que decorre da formulação estendida de fluxo desagregado para o problema do Caixeiro Viajante Assimétrico. As experiências computacionais foram realizadas numa selecção de instâncias da TSPLib e num conjunto de instâncias geradas aleatoriamente de acor...