Ruby on Rails

Ruby on Rails is an open source framework developed to increase programmer productivity and reduce entry barriers to programming Web applications. Ruby on Rails is a novel Web 2.0 framework that attempts to combine PHP's simple immediacy with Java's architecture, purity, and quality. RoR is based on the dynamically typed, object-oriented Ruby programming language.     

Low-consumption (below 2W) continuouswave singlemode quantum-cascade lasers grown by metal-organic vapour-phase epitaxy

Continuous-wave operating singlemode quantum-cascade lasers with a threshold current of 75 mA and total power consumption of less than 2 W are presented. The lasers are grown by metal-organic vapour- phase epitaxy; they function up to temperatures higher than 50degC and the emission wavelength is 5.25 mum.