Lack of Genetic Diversity in Newly Sequenced Porcine Circovirus Type 1 Strains Isolated 20 Years Apart

The complete genome sequences of a porcine circovirus type 1 (PCV1) strain isolated in 1990 and one isolated in 2011 were obtained and compared to the sequences of other available PCV1 isolates. Phylogenetic analyses revealed very low genetic diversity among these viruses, indicating an advanced state in the evolution of PCV1

State of the technique on surge protection of telecommunication installations with surge diverters

Surge protection in communication systems by diverter

Compensation of the Effects of the Slot in a Rectangular Waveguide

Method of compensating for effects of slot in rectangular waveguid

Influence of Metabolic Accumulation of Products of Hydrogenomonas Cells on Their Continued Growth Progress Report, 1 May - 31 Oct. 1966

Fructose metabolism by Hydrogenomas eutropha, auxotrophic mutants which produce polysaccharides, and large batch culture apparatu

Nonlinear effects in optical data processing Final progress report

Nonlinearity effects in optical data processing, and FORTRAN program for analyzing nonlinearities in spectroscopic photographic plate

The effect of non-linearities on optical correlation processing

Analytical method using series expansion to determine effect of nonlinearities on output of coherent optical correlato

Study of Multimission Modular Spacecraft (MMS) propulsion requirements

The cost effectiveness of various propulsion technologies for shuttle-launched multimission modular spacecraft (MMS) missions was determined with special attention to the potential role of ion propulsion. The primary criterion chosen for comparison for the different types of propulsion technologies was the total propulsion related cost, including the Shuttle charges, propulsion module costs, upper stage costs, and propulsion module development. In addition to the cost comparison, other criteria such as reliability, risk, and STS compatibility are examined. Topics covered include MMS mission models, propulsion technology definition, trajectory/performance analysis, cost assessment, program evaluation, sensitivity analysis, and conclusions and recommendations