The purpose of this study was to compare the number and
type of physical disorders of two hundred educable mentally retarded students and two hundred normal intelligence students. The relationship of physical disorders to sex and age was also investigated.
The descriptive survey method was chosen for the study.
Data...
This investigation was undertaken to provide a chemical
description of an actinophage for Streptomyces griseus, and to
determine the base composition of the phage DNA moiety. It was
believed of interest to learn whether the actinophage for the
filamentous S. griseus host would be different in its chemical
properties from...
To determine whether some bacteria are more susceptible
than others to quaternary ammonium compounds, the following bacteria
were grown on agar slants containing various concentrations of
alkyl dimethyl ethyl benzyl ammonium chloride (ADEBAC), and alkyl
dimethyl benzyl ammonium chloride (ADBAC): Aerobacter aerogenes
12658, Alcaligenes metalcaligenes, Brevibacterium linens, Chromobacterium
lividum, Escherichia...
The objective of this paper is to describe the design of a real-time system to control two hydroelectric power plants by a digital
computer. The two controlling relations are stated as the continuity
of water flow and the inequality of power generation requirements.
It contains the logical sequence in finding...
Nine experiments were conducted during 1964 and 1965 to study
the methods of reproduction and mode of spread of sago pondweed
(Potamogeton pectinatus) in irrigation systems.
Frequent treatments of sago pondweed foliage with aromatic
solvent greatly reduced the number of tubers in the substratum of
an irrigation canal. However, complete...
This thesis brings together under one cover a survey of the
history of the real number pi along with a study of the present state
of its theory, application, and calculation.
Voltage calibration methods used with X-ray tubes are either
electrical procedures requiring direct electrical connection or
ionization techniques which require no electrical connection to the
generating system. One major restriction on the use of electrical
methods for measuring the voltage applied to X-ray tubes is that
special electrical adaptors are...
Diffusion coefficients were determined for the chloroform-air
system at 50°C and for the methanol-air system at 55°C by the Arnold cell
technique. The effect of concentration was studied by varying the
concentration of the gas stream passing across the top of the Arnold
cell.
The chloroform-air system exhibited a strong...
Twelve sites of uniform topography and soils were selected in
the Pinus ponderosa/Purshia tridentata/Festuca idahoensis Association.
These sites were located in the rain shadow on the east flank
of the Oregon Cascades. A fire history in the form of fire scars on
ponderosa pine was available for nine of these...