Early studies on the biosynthesis of Sarubicin A, 1, had suggested the
intermediacy of the novel aromatic amino acid 6-hydroxyanthranilic acid,
17. To investigate the biosynthetic steps beyond 17, [¹³C-¹⁵N carboxamide]
6-hydroxyanthranilamide, 27a, was synthesized, and fed to fermentations
of Streptomyces helicus. Incorporation of 27a into 1 provided suggestive
evidence...
Over the past 10 years there has been much research
on various aspects of gender-role orientation.
Specifically, many studies have explored gender-role
orientation as a predictor of psychological adjustment.
Findings suggest that masculine and androgynous
individuals are high on psychological adjustment whereas,
feminine and undifferentiated individuals score lower on
adjustment....
Food webs consist of a combination of bottom-up (resource-driven) and top-down (predator-driven) effects. The strength of these effects depends on the context in which they occur. I investigated food web (trophic) relationships between wolf (Canis lupus) predation, elk (Cervus elaphus) herbivory, aspen (Populus tremuloides Michaux) recruitment, and fire. The study...
Sustainable elk (Cervus canadensis) habitat management on U.S. Forest Service (USFS) lands involves a complex relationship between management practices and ecological processes. A relatively novel Rocky Mountain elk population (Cervus canadensis nelsoni) on the Plumas National Forest (PNF) in northeastern California became established in the early 2000s, but there is...
This thesis deals with a modification to an existing mathematical
ppogramming algorithm called Beale's method. This method is
designed to solve only quadratic or linear programming problems.
The modification proposed aims to solve some of the problems this
method encounters and to shorten the time required for solution by
examining...
There were two viable theories of generation, preformation
and epigenesis, existing in the Seventeenth and
Eighteenth Centuries. Due to their irreconcilable nature,
they were often at loggerheads during this time interval.
The status of these generation theories can be effectively
understood in terms of Thomas Kuhn's conception of preparadigm
science....
Fifty-four premarital couples were interviewed in an attempt to:
(a) delineate pathways of premarital involvement; (b) investigate
differences in the relationships of individuals who follow different
pathways; and (c) examine which background variables predispose individuals
to follow a specific pathway. Four sexual pathway types were
established using a cluster analytic...
The purpose of the present study was to describe the process
of marital dissolution. This description entailed collecting information
about the process itself and then typologizing divorces
on the basis of their trajectories to dissolution. One hundred
and seven divorced individuals were interviewed. This interview
consisted of three parts. First,...
It has been proposed that individuals develop models
of premarital relationships based on their preferred ways of
experiencing love with another person. This study attempted
to operationalize the concept of relationship models to
determine if individuals differ in how they expect their
feelings of love to develop over the course...
The purpose of the present study was to describe the process of
premarital relationship dissolution. This description entailed
typologizing relationships on the basis of their trajectories to
involvement and eventual dissolution. One hundred individuals who had
been involved in a serious relationship that had broken up within the
past 12...