The Gandghar Range and Kherimar Hills, located in the Hill Ranges of northern
Pakistan, contain rocks that are transitional between unmetarnorphosed foreland-basin
strata to the south and high-grade metamorphic and plutonic rocks to the north. The
southern Gandghar Range is composed of a succession of marine strata of probable
Proterozoic...
Cellulolytic enzymes capable of efficiently degrading crystalline cellulose are a
complex mixture of endo- (endoglucanases) and exo-acting (cellobiohydrolases)
enzymes. One approach to separating these enzymes is affinity chromatography. A new
ligand, p-aminophenyl l-thio-β-D-cellobioside (APTC), is introduced for this purpose.
The property of APTC in affinity chromatography is demonstrated using Trichoderma...
Aspects concerning the bionomics of the parasitic honey bee brood mite, Varroa
jacobsoni Oudemans were investigated. Mite mortality is great during the winter season
when the host colony is not rearing brood, appearing to be independent of the mortality of
its host. In winter period, no significant association between the...
Studies are currently underway to determine the suitability of Yucca Mountain
in Nevada as the nation's first high-level nuclear waste repository. Values of net
infiltration are required to determine pre-waste emplacement groundwater travel times
and the performance of the repository as a waste containment system. The objective of
this study...
More efficient methods are needed for the in-situ evaluation of mass transfer parameters which describe the movement of solutes through aquifer material. The objective of this study was to develop a method for estimating diffusion rate and capacity coefficients using a single-well, "push-pull" tracer test. The method consists of the...
This thesis investigates the dynamic efficiency of emission standards and
Pigouvian taxes in the regulation of pollution where research and development (R&D)
and the technology level are endogenous. A key element of the analysis is a comparison
of the efficiency between instances in which the regulator can and cannot commnit...
Recent in vitro data provide evidence that estrogen may assist in the maintenance of
nervous tissue viability. Anecdotal reports suggest a lower prevalence of SDAT in
postmenopausal women who have received estrogen replacement therapy although
published data are conflicting. The purposes of this study are to determine whether the
incidence...
The effects of deforestation and biomass burning in tropical dry forests (TDF) remain a little studied phenomenon. We quantified total aboveground biomass (TAGB), carbon and nutrient (N,S,Ca,P,K) loss under two separate fire severity scenarios; one early when the fuels were higher in moisture content, one later when the slash fuels...