Solar Residential Application

The Southern Solar Energy Center (SSEC) is one of four regional solar energy centers funded by DOE as lead institutions for the commercialization of solar technologies. This paper describes their programs in general , and presents the progress and results of SSEC\u27s Buildings Program in detail. Several residential designs which resulted from the program are illustrated and the energy saving features explained

States of decay: The systems biology of mRNA stability

An appropriate equilibrium between transcription and mRNA decay is vital for the function of the cell. The RNA-binding complexes regulating mRNA degradation, such as carbon catabolite repression 4-negative on TATA-less, may also control several other stages of the mRNA life cycle, from transcription to translation. This pleiotropic control complicates the analysis of mRNA stability. Computational models have analysed the mechanisms underlying mRNA turnover and have been used to extract mRNA decay rates from high-throughput data sets. Multiomics studies have clarified the actions of RNA-binding complexes, and such studies allow the evolution of more accurate and complex computational models. This review discusses two complementary aspects of systems biology in the study of mRNA decay—computational modelling of mRNA turnover and recent ‘-omics’ studies of the function of RNA-binding proteins controlling mRNA stability

Pressure drag of bodies at Mach numbers up to 2.0

The drag of bodies has now assumed greater importance because, as shown in NACA RM L53I15a, 1953 and NACA RM A53H18a, 1953, the transonic drag rise of an airplane can be the same as its equivalent body. Obviously, the airplane designer would like his airplane to have a low-drag equivalent body. This paper shows some of the factors which minimize the drag of bodies at transonic and supersonic speeds and shows some of the penalties caused by deviating from low-drag body shapes. Drag reductions can be obtained in two ways, first, through increasing the body fineness ratio, and second, through better shaping of the body profile at a given fineness ratio. The effects of fineness ratio are discussed first and then, more completely, detail-shape effects