Seismic refraction, reflection and gravity data obtained
across the Peru continental margin and Nazca Plate
at 9° S. permit a detailed determination of crustal structure.
Complex structures normal to the profile require the
development of a ray trace technique to analyze first and
later arrivals for eleven overlapping refraction lines....
Interactions and feedbacks among climate change effects and continued human impacts will exacerbate impacts to water resources in complex ways. An urgent imperative of the hydrologic community is to understand the response of hydrologic systems to these perturbations, thus contributing to long-term sustainability of water resources in an uncertain future....
Ten helminth-free sheep were given two doses of 10,000,
X-irradiated, H. contortus, third stage larvae 30 days apart. These
animals and a group of ten non-vaccinated sheep were challenged
with 50,000, normal, H. contortus, third stage larvae 60 days
following the second vaccination. Antibody levels were measured
in both groups...
With the advent of more powerful, less expensive computing
resources, more and more attention is being given to Monte Carlo
techniques in design application. In many circles, stochastic
solutions are considered the next best thing to experimental data.
Statistical uncertainties in Monte Carlo calculations are typically
determined by the first...
Heterostylum robustum (Osten Sacken) is the principal parasite
of the alkali bee, Nomia melanderi Ckll., one of the most efficient
pollinators of alfalfa in the western United States.
The purpose of the study was to determine the incidence of
parasitism and to investigate the biology of H. robustum.
The fly...
The counting of delayed neutrons emitted by fission is presented
as a valuable technique for the measurement of uranium concentrations
in a variety of matrices. The concentrations successfully
analyzed can vary from well under one part per million to the high
concentrations found in uranium ores. In a sample analysis,...
The seismic performance of port structures has been well documented following
recent earthquakes, and indicates that port structures are highly susceptible to earthquake-induced
damages. These damages are primarily due to soil liquefaction and the associated
ground failures. Sheet pile bulkheads provide vital intermodal and lifeline transportation
links between water-side and...
Rates of sediment transport were determined using tracer gravel and a RFID antenna array at Oak Creek (Oregon) to compare a new method with an existing transport relation created from data previously collected in the same study reach. Close to 3,000 tracers were deployed throughout the study reach and were...
In this study the ability of establishing time standards using the
technique of regression analysis is demonstrated. Numerical standards
are developed for fish filleting operations which are satisfactory for
practical use by the seafood processing management.
For the analysis non-experimental or historical fillet data was
obtained from two seafood processors...
The cyclic resistance of predominantly fine-grained soils has received considerable attention following ground and foundation failures at sites underlain by silt-rich soils during recent earthquakes. In several cases substantial ground deformation and reduced bearing capacity of silt soils has been attributed to excess pore pressure generation during cyclic loading. These...