Thesis (Ph.D.)--Aberdeen University, 1988. / Title from web page (viewed on Mar. 4, 2010). Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.

Thesis (M.A.)--Ohio University, June, 2004. / Title from PDF t.p. Includes bibliographical references (p. 81-85)

Thesis (Ph. D.)--University of Washington, 1986. / Vita. Bibliography: leaves [111]-118.

An electrophoretic survey of sixteen enzyme loci in nine of the eleven British Nemouridae (Insecta: Plecoptera) was carried out in order to assess their systematic relationships and to determine the level of genetic variation in these primitive insects.

This study involved the determinations of the foliar levels of chlorophyll a and b and metal levels in the year 1, year 2 and year 3 needles of Sitka spruce. A survey was made of nineteen sites in the Afan 1 forest in South Wales. The results obtained indicates that there are two distinct types of site, namely good growth sites and poor growth sites. The poor growth sites were found to be at higher elevations. Further analyses of the results show that there is possibly an increased loss of nutrients from the trees at the poor growth sites. This may be due to increased pollution that may be present at the higher elevations. In 1987 a survey was made of the one year old epicormic tissues that were compared with the normal tissues at the 19 sites of the Afan 1 Forest There were no statistically significant differences in the levels of the chlorophylls or in any of the metals that were looked at. At the Afan 1 Forest there are observed pairs of trees that are growing quite close together, but they exhibit quite a marked difference in growth. One of the pair shows vigorous healthy growth, whilst the other is stunted and shows symptoms of decline. One such pair is found at Site 15. They are of the same age and from the same seed stock. It was found that over an eight month period, the stronger growing of the pair had significantly higher levels of chlorophyll a and b, potassium, calcium and magnesium. This may indicate increased leaching and foliar damage from the poorer growing of the pair. Three more pairs of trees together with their grafts were examined from sites' 1,5 and 6, for their levels of peroxidase enzymes. Peroxidase has been used to determine possible genetic differences in cultivars. The work yielded very little useful information. The SCOR-UNESCO equations have been widely used as a means of determining chlorophyll levels from plant extracts. A multivariate calibration method was used in conjunction with HPLC to determine the accuracy of these equations for determining the levels of chlorophyll and b. The results show revealed that the equations appear to be underestimating the chlorophyll a levels. Leading on from the HPLC work, a novel method for the separating a mixture of chlorophyll a and b was developed using packed column SFC. The method appears to be quite promising with its better resolution and faster analysis times as compared to FIPLC methods. Sitka spruce seedlings were grown in COIR (coconut husk) and were used in and were used in a central composite design to determine the effects of cadmium and copper, both singly and in combination would have upon their growth. Response surface methodology was used to determine the effects and it was found from the experiment that high levels of cadmium appeared to have an effect upon the elongation of the needles of the new shoots.

The Iban of Sarawak, East Malaysia, are the inhabitants of a vast equatorial rain forest which not only plays a crucial role in satisfying their material needs, but also provides them with a rich source of imagery for the portrayal of key cultural concerns and social values. That is to say, one finds that Iban collective representations are characterized by a profusion of floral and botanical forms, while the ritual use of plants features strongly in Iban religious life. Often these 'sacred' and 'profane' aspects of the plant world coincide, as in the case of Iban rice farming which both provides them with their staple diet, and at the same time is imbued with a deeply religious significance. The primary interest of this study, then, lies in its examination of the special relationship between man and plant in Iban culture. The research is based on library materials and takes, as its epistemological starting point, the idea that an understanding of metaphor can be usefully employed in the interpretation of symbolic phenomena. This approach works on two levels. On the one hand, there is the idea that a systematic examination of recurrent metaphorical forms - be they expressed in mythological narrative, ritual imagery, or everyday language - can be linked to dominant cultural values and social orientations. On the other hand, there is also the idea that a theory of metaphor - as developed in the field of literary criticism and semantics - can provide valuable insight into the way in which so-called 'symbolic phenomena' are 'actualized', or 'understood', by those for whom they operate. In the last instance, the study seeks to transcend the formal strictures of conventional structural analysis by suggesting ways in which the elaborate structures that are revealed by the latter are actually realized, or at least represented, in daily life - whether it be in the rarefied atmosphere of a religious ceremony or the more mundane setting at some commonplace activity. In doing so, the study raises a number of issues that are of a metaphysical nature - among them the question of indigenous notions of causation - thereby providing not just simply a re-evaluation of the existing ethnographic record, but also a point of departure for future inquiries in the field.

In recognition of the widespread deterioration of the natural environment, and the continual emergence of sudden catastrophic environmental changes resulting from complex interactions of theretofore apparently disparate phenomena, this research presents a complex systems approach to the modelling of such environmental catastrophes. Recognizing contemporary views of complexity and evolution, this research presents a dynamic complex systems model which displays emergent characteristics which can be directly related to the modelled phenomena - linking acid rain and eutrophication - and the study region, the Rutland Water catchment. This is achieved through the definition of a catastrophe indicator which indicates both the proximity and magnitude of catastrophe arising from the non-linear and discontinuous acid-phosphorus relationship within the soil domain which lies at the heart of this Chemical Time Bomb phenomenon. This facilitates assessment of the vulnerability of the Rutland Water catchment to potential propagation of this CTB given continued acidification and phosphate accumulation. The main contributions of this research may thus be found in the following areas: Development of a dynamic complex systems model - transferable to alternative catchments due to the minimal data requirements and its generic representation - which may be used to describe non-point sources of phosphates as part of assessments of potential eutrophication, overcoming such limitations found in existing models. * Definition of a catastrophe indicator( Re)- which highlights both the proximity and magnitude of catastrophe describing a specific Chemical Time Bomb phenomenon whereby the soil suddenly changes from being a sink to a source of phosphates; long-term accumulations of phosphate in the soil being released as a consequence of soil acidification in the short-term. Presentation of a complex systems approach - hinged upon this concept of a catastrophe indicator - to the representation of non-linearities and discontinuities between heretofore apparently disparate phenomena which are 'competing for a common resource.

This study of precipitation is based on data in the 1955 Climate of British Columbia concerning the network of 106 stations which have been operated in the Fraser River Basin, Emphasis is on the description of precipitation characteristics, with cartographic representation of the data forming the basis of the explanations and discussion in the The first portion of the study concerns the concentration of annual and seasonal precipitation throughout the Basin, followed by a similar examination of mean annual and seasonal snowfall with observations concerning the proportion of annual snowfall in each season and the proportion of seasonal precipitation which occurs as snow. A parallel discussion of proportions for total precipitation, with emphasis on seasons and months of maximum and minimum, is concluded by an analysis of precipitation regimes in various parts of the Basin. The effect of the gaps in the Coast Mountains resulting in continental or coastal characteristics of precipitation, dependent on station location, is noted repeatedly throughout the thesis. Considerations of variability as well as the value and methods of checking homogeneity of station records are included with observations concerning years in which heavy or light precipitation was general in large parts of the Basin. An examination of all topics as they affect the thirteen sub-basins of the Fraser concludes the study. / Arts, Faculty of / Geography, Department of / Graduate

-Ability to articulate the world of his own means, using post-production manipulation and mutual intervention. -Trying to phrase "without an accent," so that the recipient of the message (no longer subjectively) perceived the relationship between objectively defined entities. -all Redefines based on already recognized ... -Need of authorial manipulation and the presence of "alter ego", the second (submissive) I, in the role of uncritical recipient of my suggestions. -Koexistence And multiculturalism. -All Cats have four legs, my dog has four legs - hence my dog is a cat.