Oclaro (United Kingdom)

Este artigo apresenta os resultados de um trabalho de articulação entre equipes universitárias e uma empresa privada com o objetivo de elaborar um estudo de caracterização do solo, a fim de subsidiar a elaboração de projetos para habitações de interesse popular na Ocupação Carlos Marighella (OCM), em Fortaleza-CE. O estudo descreve os procedimentos de aproximação entre a universidade e a comunidade, bem como a participação da empresa responsável pelos ensaios e análises geotécnicas. O estudo se propõe a apresentar elementos que viabilizarão o fornecimento de orientações visando o uso mais racional do subsolo local, o projeto e a futura execução das fundações. Dados preliminares permitem a identificação do tipo de fundação a ser adotado. A atuação do ETecS (Escritório de Tecnologia Social) possibilita prestar um serviço de engenharia de qualidade para comunidades carentes e fornecer aos alunos formação técnica e cidadã.

To determine the effect of stifle flexion on the proximity of the cranial tibial artery to the proximal tibia in canine stifles with an intact or transected cranial cruciate ligament (CCL). Ex vivo randomized blinded computed tomographic angiographic study. Fifteen pelvic limbs from eight greyhound cadavers. The femoral artery and vein were cannulated and injected with 10 mL of iohexol. Each limb was placed in lateral recumbency on an acrylic sheet with predrawn femoral and tibial lines representing angles of stifle extension. Computed tomography was performed before (limbs 1-15) and after (limbs 10-15) CCL transection. The shortest distance between the cranial tibial artery and proximal tibia (dCrTA-PT) was measured at a distance of one patellar length from medial intercondylar tubercle. Median dCrTA-PT in intact specimens at 70°, 90°, 110°, and 135° was 2.04, 2.05, 2.28, and 2.51 mm, respectively (P = .008). Pairwise comparisons identified a difference between 70° and 135° (P = .007). Mean dCrTA-PT in transected specimens at 70°, 90°, 110°, and 135° was 2.60, 2.57, 2.90, and 2.79 mm, respectively (P = .208). Median overall dCrTA-PT was 2.24 mm in intact specimens (limbs 1-15, all four angles of extension combined) and 2.76 mm in transected specimens (limbs 10-15, all angles combined; P = .01). Flexion of the stifle resulted in a negligible decrease in dCrTA-PT in intact specimens but had no effect in CCL transected stifles. The angle of stifle extension does not appear to have any clinically significant effect on the proximity of cranial tibial artery to the proximal tibia.

In this paper, we review the historical evolution of predictions of the performance of optical communication systems.We will describe how such predictions were made from the outset of research in laser based optical communications and how they have evolved to their present form