We tend to perceive and emphasize the transition from Late Antiquity Early Middle Ages, especially in North Africa, through ruptures changes. This collection of papers highlights, alongside major changes transformations that affected entire Mediterranean region, longer-term processes developments Africa between AD 500 1000. In this time frame, region is shaped by Vandal, Byzantine Arab conquest...

It is analysed the discrepancy about the coronal magnetic eld between solar optic and solar radio using magnetic bril concept with lling factor and fractal structure model. The magnetic eld of 100 G considered in solar optics is mean value in a large scale, and that of 1000 G in solar should be the value of ne structures inside \macro" loop. The magnetic eld in the solar corona is poorly known ...

By changing the material commonly used to make devices for generating entangled photons, researchers create a quantum light source that is significantly brighter than others.

CONTEXT The GyneFix intra-uterine device has been used in our family planning service since 1997. One of the perceived advantages is its low expulsion rate, as reported by clinical trials. OBJECTIVE To calculate expulsion rates in routine clinical use and to look at possible reasons for expulsion. DESIGN Retrospective casenote analysis and opportunistic client consultation. SETTING A city...