Channel maintenance operations in the rivers and harbors of the
United States annually require the disposal of over 320 million cubic
meters of dredge spoils. As the availability of suitable land sites
diminishes, open water disposal presents an attractive yet controversial
alternative method. For open water disposal to be acceptable,...
Waters of various salinities were secured from the Umpqua
estuary, the Umpqua River, and the open ocean near the mouth of the
estuary. The rate of oxidation of sulfides in these various waters
was investigated to assess the potential longevity of free sulfides in
estuarine waters.
The rate of disappearance...
This is a fundamental study of the mechanism of protein particle
removal during flow through sandy soil. Mathematical models for
diffusion-adsorption and diffusion-convection-adsorption processes
were developed and compared with experimental data. An attempt was
made to calculate the distance over which the adsorption forces act.
The differential equation for the...
Computer oriented techniques and procedures are presented for the analysis of single and multiple cable systems. Application is made to a two-point mooring system influenced by surface and subsurface hydrodynamic loading. The effects of the various parameters are presented and the numerical method is compared to exact solutions obtained from...
A study to determine the effect of certain synthetic organic
insecticides on the Biochemical Oxygen Demand (BOD) Test was
performed. BOD tests on a standard glucose-glutamic acid substrate
were conducted while in the presence of dieldrin, dichlorodiphenyltrichloroethane
(DDT), or diazinon. From the BOD data, the following
parameters were obtained:
1....
Aerial photography provides a method of analyzing dispersion
of wastes that are discharged into the ocean. This method is more
comprehensive than conventional boat sampling in dispersion studies.
The photographic technique permits waste concentrations to be
measured throughout the plume in one instant; thereby allowing the
diffusion analysis to be...
Resistance of reinforced concrete beams to diagonal tension
was studied in a series of papers which included beams without
web reinforcement and beams with various types of web reinforcement.
The magnitude of the loading causing the formation of initial
diagonal tension cracks depended primarily on the dimensions of
the cross...
The torsion test was evaluated as a method for determining the shear
strength of full-size structural lumber. The evaluation involved an experimental
length study, an experimental depth study, and a finite element study.
The length study consisted of fifty nominal 2x4 specimens, ten specimens
for each length, and ten American...