An index suitable for measurement of the
diversity of agricultural land use is developed. This
index is based on a principle of measuring the deviation
of a distribution from an even distribution and is similar
to indexes employed to measure diversity in manufacturing
The index is applied to the thirty-six...
Seven one-square-mile areas were selected to test the notion
that there is a general intensification of agriculture as farm land
becomes more valuable. The Tualatin Valley adjacent to a large expanding
population center was selected because the land values in this
valley are increasing faster than are those of average...
The Upper Napa Valley land use system is presently
agricultural and epitomized by vineyards of quality wine grapes. As
the San Francisco Bay Urban Area continues to expand the Upper
Napa Valley is brought into closer proximity to the urban margin,
and its agricultural usefulness is being threatened. Whether the...
This research is an effort to appraise the results of the 1963
legislation, especially in terms of the spatial aspect. Has it achieved
the desired purpose? How many, and what size of farms are involved?
Where are these farms located?
The research field work resulted in a definitive map showing...
Pesticide chemists have recognized since the 1940's that ultraviolet light was deleterious to the insecticidal properties of certain compounds. However, it has been only within the last 15 years that a number of photodecomposition products of the chlorinated hydrocarbon
insecticides have been isolated and identified. The degradation of insecticides by...
An attempt is made to determine whether
or not property value appreciation on land adjacent to an
expanding urban center is related to distance from the
city and to identify the temporal variation in this relationship.
The results of simple linear regression strongly
suggest that property value appreciation and distance...
The relationships between infant mortality
and four socio-economic factors were determined for
the United States using visual comparisons of isopleth
maps and linear regression analysis. The four socioeconomic factors were per capita income, the percent of the population that is Negro, the per cent of the population that has a...
Moisture has long been identified as one of the major
limiting factors in the distribution of agricultural land use practices.
However, the importance of any environmental element can only be
determined by considering how it is affected by its relationship with
other elements of the environment. Thornthwaite's moisture index
attempts...
Dimethyl sulfide, acetaldehyde, isobutyraldehyde, furan, 2-furaldehyde, 2-acetyl furan, and ethyl furoate were produced when pureed strawberries were heated to 120° C. for 30 minutes. Shorter heating periods were sufficient to produce the first three compounds. With the exception of acetaldehyde, none of the heat-induced compounds were detected in unheated, pureed...
Thermal oxidation of methyl oleate was studied over a range of temperatures from 50 C to 150 C for periods of time up to 30 min. Degradation was quantitatively followed by gas liquid chromatography (GLC) and liquid scintillation counting of the products of methyl oleate-U-14C heated under a stream of...