Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Ground-water flow and quality beneath sewage-sludge lagoons, and a comparison with the ground-water quality beneath a sludge-amended landfill, Marion County, Indiana
The groundwater beneath eight sewage sludge lagoons, was studied to characterize the flow regime and to determine whether leachate had infiltrated into the glacio-fluvial sediments. Groundwater quality beneath the lagoons was compared with the groundwater quality beneath a landfill where sludge had been applied. The lagoons and landfills overlie outwash sand and gravel deposits separated by discon
Authors
K.E. Bobay
U.S. Geological Survey ground-water studies in Pennsylvania
In Pennsylvania, large water demands generally are met from surface-water sources; small water demands generally are met from ground-water sources. Ground-water sources supply 6 percent of the total water used in Pennsylvania. Of the ground water used in 1984,55 percent was for industry, 23 percent for public supply, 15 percent for rural domestic supplies, 5 percent for livestock, and 2 percent fo
Authors
C. R. Wood
[Book review] A field guide to the birds of Hawaii and the tropical Pacific by H. Douglas Pratt, Phillip L. Bruner, and Delwyn G. Berrett
No abstract available.
Authors
R. B. Clapp
[Book review] The Tanagers: Natural History, Distribution, and Identification, by Morton L. Isler and Phyllis R. Isler
No abstract available.
Authors
C.S. Robbins
[Book review] A Field Guide to Seabirds of the World, by Peter Harrison
No abstract available.
Authors
C.S. Robbins
The eighty-eighth Christmas Bird Count: SD MD. Southern Dorchester County, MD
No abstract available.
Authors
C.S. Robbins
The eighty-eighth Christmas Bird Count: OC MD. Ocean City, MD
No abstract available.
Authors
C.S. Robbins
Population trends of the Purple Martin in North America, 1966-1986
No abstract available.
Authors
J.R. Sauer, M. K. Klimkiewicz, Sam Droege
Effects of zinc smelter emissions on farms and gardens at Palmerton, PA
In 1979, before the primary Zn smelter at Palmerton was closed due to excessive Zn and Cd emissions and change in the price of Zn, we were contacted by a local veterinarian regarding death of foals (young horses) on farms near the smelter. To examine whether Zn or Cd contamination of forage or soils could be providing potentially toxic levels of Zn or other elements in the diets of foals, we measu
Authors
R. L. Chaney, W. N. Beyer, C.H. Gifford, L. Sileo
Influence of the method of fluoride administration on toxicity and fluoride concentrations in Japanese quail
Young Japanese quail (Coturnix japonica) were administered NaF for 16 d either in their diet or by esophageal intubation. Based on the total fluoride ion (Σmg F−) intake over the 16-d experimental period, fluoride administered by intubation was at least six times more toxic than that fed in the diet. Dietary concentrations of 1,000 ppm F− (Σmg F− for 16 d = approx. 144) produced no mortality, wher
Authors
W. J. Fleming, C.A. Schuler
MARKOV: A methodology for the solution of infinite time horizon MARKOV decision processes
Algorithms are described for determining optimal policies for finite state, finite action, infinite discrete time horizon Markov decision processes. Both value-improvement and policy-improvement techniques are used in the algorithms. Computing procedures are also described. The algorithms are appropriate for processes that are either finite or infinite, deterministic or stochastic, discounted or u
Authors
B.K. Williams
Environmental contaminants in California condors
Five wild Califorinia condors (Gymnogyps californianus) that died in 1980-86 were necropsied and tissues were analyzed for environmental contaminants. Three died of lead (Pb) poisoning, 1 presumably of cyanide (CN) poisoning, and 1 nestling of handling shock. Organochlorine concentrations were low in 4 condors that were analyzed for these contaminants. Blood samples from 14 wild and 14 captive con
Authors
Stanley N. Wiemeyer, J. M. Scott, M.P. Anderson, P.H. Bloom, C. J. Stafford