Design, fabrication, and test of a composite material wind turbine rotor blade

The aerodynamic design, structural design, fabrication, and structural testing is described for a 60 foot long filament wound, fiberglass/epoxy resin matrix wind turbine rotor blade for a 125 foot diameter, 100 kW wind energy conversion system. One blade was fabricated which met all aerodynamic shape requirements and was structurally capable of operating under all specified design conditions. The feasibility of filament winding large rotor blades was demonstrated

Study of the Blue Crab in Texas

Information on seasonal abundance, growth, movements and environmental relationships was used to study trends in the blue crab (Callinectes sapidus) population of Texas, while a survey of the commercial fishery was made to determine the size of the catch and market conditions

Populations Studies of the Sports and Commercial Fin-Fish of the Galveston Bay System - Analysis of Populations of Sports and Commercial Fin-Fish and of Factors Which Affect These Populations in the Coastal Bays of Texas

Survival of Year-Class O redfish (Sciaenops ocellata) and southern flounder (Paralichthys lethostigma) was high and good standing crops of both species were present during late fall. Trends in the relative availability of adult game fish were not clear as drag seine data were weak and incomparable. Commercial landings decreased slightly from 1963 figures, due mainly to a reduction in the speckled trout (Cynoscion nebulosus) catch

Studies of the Blue Crab in Texas

Blue crab, Callinectes sapidus, populations were studied in eight coastal bays of Texas and in the Gulf near Bolivar Peninsula. In 1966, young crabs were more abundant in Aransas Bay and the upper Laguna Madre than at any time since 1962. Observable abundance changes were not apparent in other bays sampled. Galveston Bay fishermen produced 50% of the commercial blue crab catch. Total landings decreased 24% from 1965. Spawning and seasonal occurrence is discussed

Hydrographic and Meteorological Study of the Galveston Bay System - Analysis of Populations of Sports and Commercial Fin-Fish and of Factors Which Affect These Populations in the Coastal Bays of Texas

Hydrographic data obtained in the field and climatological data taken from publications are presented in this report. Salinities varied little from 1963 readings, but were higher than 1962 figures. Trinity River discharge was 56 per cent less than that recorded in 1963. Above average water and air temperatures occurred during November and December

SARCS strong lensing galaxy groups: I - optical, weak lensing, and scaling laws

We present the weak lensing and optical analysis of the SL2S-ARCS (SARCS) sample of strong lens candidates. The sample is based on the Strong Lensing Legacy Survey (SL2S), a systematic search of strong lensing systems in the photometric Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). The SARCS sample focuses on arc-like features and is designed to contain mostly galaxy groups. We briefly present the weak lensing methodology that we use to estimate the mass of the SARCS objects. Among 126 candidates, we obtain a weak lensing detection for 89 objects with velocity dispersions of the Singular Isothermal Sphere mass model ranging from 350 to 1000 km/s with an average value of 600km/s, corresponding to a rich galaxy group (or poor cluster). From the galaxies belonging to the bright end of the group's red sequence (M_i<-21), we derive the optical properties of the SARCS candidates. We obtain typical richnesses of N=5-15 galaxies and optical luminosities of L=0.5-1.5e+12 Lsol (within a radius of 0.5 Mpc). We use these galaxies to compute luminosity density maps, from which a morphological classification reveals that a large fraction of the sample are groups with a complex light distribution, either elliptical or multimodal, suggesting that these objects are dynamically young structures. We finally combine the lensing and optical analyses to draw a sample of 80 most secure group candidates, i.e. weak lensing detection and over-density at the lens position in the luminosity map, to remove false detections and galaxy-scale systems from the initial sample. We use this reduced sample to probe the optical scaling relations in combination with a sample of massive galaxy clusters. We detect the expected correlations over the probed range in mass with a typical scatter of 25% in the SIS velocity dispersion at a given richness or luminosity, making these scaling laws interesting mass proxie