Solar energy research and utilization

The role is described that solar energy will play in the heating and cooling of buildings, the production of renewable gaseous, liquid and solid fuels, and the production of electric power over the next 45 years. Potential impacts on the various energy markets and estimated costs of such systems are discussed along with illustrations of some of the processes to accomplish the goals. The conclusions of the NSF/NASA Solar Energy Panel (1972) are given along with the estimated costs to accomplish the 15 year recommended program and also the recent and near future budget appropriations and recommendations are included

Interim report on the hydrologic features of the Green Swamp area in Central Florida

The Green Swamp area in central Florida is another area where man is developing agricultural land from marginal land. Though the area is by no means as extensive as that of the Everglades, the present efforts for its development are similar to the early efforts for developing the Everglades in that many miles of canals and ditches have been constructed to improve the drainage. Lest the early mistakes of the Everglades be repeated, the Florida Department of Water Resources considered that an appraisal of the physical and hydrologic features of the area was needed to determine the broad effects of draining and developing the swamp. This reconnaissance provides information required by the State of Florida for determining its responsibility and policy in regard to the Green Swamp area and for formulating future plans for water management of the area. Some of the features that have been determined are: the amount of rainfall on the area; the pattern of surfacewater drainage; the amount and direction of surface-water runoff; the direction of ground-water movement; the interrelationship of rainfall, surface water, and ground water; the effects of improved drainage facilities'; and the effects of the hydrologic environment on the chemical quality of water of the area.(PDF contains 106 pages.

Advanced solar cell power systems for space

Advanced solar cell power systems to reduce weight and withstand thermal stress conditions of Interplanetary Monitoring Platform /IMP-D

Highly loaded multi-stage fan drive turbine: Performance of final three configurations

Results for a three-stage highly loaded fan drive turbine follow-on test program are presented. The effects of combinations of tandem and leaned bladerows on three-stage turbine performance were tested. The three-stage turbine with a tandem stator in stage two exhibited a total-to-total efficiency of approximately 0.887 as compared to 0.886 for the plain blade turbine base case

Influence of average pedalling rate upon the magnitude of the mechanical and biochemical changes arising from high-intensity exercise

The process of fatigue during 30 s of high-intensity exercise results in rapid and substantial mechanical, electrical and biochemical changes in muscle fibres. This thesis describes a series of experiments, performed upon a friction-loaded cycle ergometer, which investigated whether the magnitude of the mechanical and biochemical changes is affected by changes in average pedalling rate. The ability to generate peak power in a subsequent sprint of 6 s duration was used to assess the magnitude of the mechanical changes. Changes in the concentrations of blood and muscle metabolites pre- and post-exercise permitted some of the biochemical changes to be measured. [Continues.

Utricularia gaagudju, a new species for the Northern Territory, and a recircumscription of U. kimberleyensis C.A.Gardner

A new species of Utricularia (Lentibulariaceae) is recognised for the Northern Territory. A description of Utricularia gaagudju R.W.Jobson & Cherry is provided along with a new circumscription for the Western Australian species U. kimberleyensis to which it was previously assigned. Diagnostic features are illustrated, and distribution, habitat, and conservation status are discussed

Algorithms for FFT Beamforming Radio Interferometers

Radio interferometers consisting of identical antennas arranged on a regular lattice permit fast Fourier transform beamforming, which reduces the correlation cost from $\mathcal{O}(n^2)$ in the number of antennas to $\mathcal{O}(n\log n)$. We develop a formalism for describing this process and apply this formalism to derive a number of algorithms with a range of observational applications. These include algorithms for forming arbitrarily pointed tied-array beams from the regularly spaced Fourier-transform formed beams, sculpting the beams to suppress sidelobes while only losing percent-level sensitivity, and optimally estimating the position of a detected source from its observed brightness in the set of beams. We also discuss the effect that correlations in the visibility-space noise, due to cross-talk and sky contributions, have on the optimality of Fourier transform beamforming, showing that it does not strictly preserve the sky information of the $n^2$ correlation, even for an idealized array. Our results have applications to a number of upcoming interferometers, in particular the Canadian Hydrogen Intensity Mapping Experiment--Fast Radio Burst (CHIME/FRB) project.Comment: 17 pages, 4 figures, accepted to Ap

South Carolina Water Plan

2008 S.C. Water Resources ConferenceAddressing Water Challenges Facing the State and Regio