Browsing University of Manitoba Scholarship (login required) by Issue Date
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Hydraulic conductivity of clays in confined tests under low hydraulic gradients
(1999-10-31)Clay barriers normally function at hydraulic gradients much lower than are commonly used in laboratory tests for hydraulic conductivity. This paper describes low-gradient tests on compacted illite, Na-bentonite, and ... -
Geoelectric response and crustal electrical-conductivity structure of the Flin Flon Belt, Trans-Hudson Orogen, Canada
(1999-11-31)A Lithoprobe magnetotelluric survey across the Palaeoproterozoic Trans-Hudson Orogen included 34 sites within the Flin Flon Belt and adjacent geological domains. The magnetotelluric impedance tensors and geomagnetic induction ... -
Multiple environmental factors regulate the expression of the carbohydrate-selective OprB porin of Pseudomonas aeruginosa
(1999-12-31)In response to low extracellular glucose concentration, Pseudomonas aeruginosa induces the expression of the outer membrane carbohydrate-selective OprB porin. The promoter region of the oprB gene was cloned into a lacZ ... -
Nitric oxide inhibits norepinephrine-induced hepatic vascular responses but potentiates hepatic glucose output
(2000-01-31)We previously reported that sympathetic nerve-induced vasoconstriction in the intestine resulted in shear stress induced release of nitric oxide (NO) that led to presynaptic inhibition of transmitter release. In contrast, ... -
Hormonal manipulations of growth rate and its influence on predator avoidance - foraging trade-offs
(2000-01-31)Theoretical investigations into the impact that predators exert on prey species suggest that two parameters, growth rate and mortality rate, should be the most influential in determining when animals should risk exposure ... -
Dual-band dual-polarized perforated microstrip antennas for SAR applications
(2000-01-31)For dual-band dual-polarized synthetic aperture radar (SAR) applications a compact low-profile design is investigated. The operating frequencies are at the L and C-bands, centered about 1.275 and 5.3 GHz, respectively. ... -
Phylogenetic analysis of the small subunit ribosomal RNA gene of the hyphochytrid Rhizidiomyces apophysatus
(2000-01-31)The potential relationship of the uniflagellate hyphochytrids with biflagellate stramenopiles is still not clearly resolved. Thus, we have expanded the number of isolates and taxa of hyphochytrids compared. The phylogenetic ... -
External field coupling to MTL networks with nonlinear junctions: Numerical modeling and experimental validation
(2000-02-29)The problem of predicting the voltages and currents induced on a printed circuit multiconductor transmission line (MTL) network by an impinging transient plane wave electromagnetic field is considered, The MTL network ... -
Modelling the early age behaviour of a low heat concrete bulkhead sealing an underground tunnel
(2000-02-29)A major experiment - the tunnel sealing experiment, related to the disposal of heat generating radioactive wastes in geological formations and supported by government organizations from Japan, France, U.S.A., and Canada, ... -
Acoustic discharge measurements for the performance testing of low-head hydroelectric turbines under disturbed flow conditions
(2000-02-29)The detection, measurement, and characterization of frazil ice particles is a necessary first step in advancing our understanding of frazil ice processes as well as improving models. The detection of frazil ice has been ... -
Helminth communities of yellow perch (Perca flavescens (Mitchill)): determinants of pattern
(2000-04-30)Twenty-eight parasite species were recorded from 504 yellow perch (Perca flavescens) collected from Dauphin Lake and Beaufort Lake, Manitoba, and Lake Winnebago, Green Bay, and Lake Michigan, Wisconsin. Four parasite ... -
Dispersion characteristics of grooved microstrip line (GMSL)
(2000-04-30)In this paper, the method of lines and finite-difference time-domain numerical methods are used to investigate the field distribution, dispersion, and impedance characteristics of the grooved microstrip line (GMSL) structure. ... -
Predictors of Torsades de Pointes in rabbit ventricles perfused with sedating and nonsedating histamine H-1-receptor antagonists
(2000-05-31)Several nonsedating histamine H-1-receptor antagonists are associated with torsades de pointes ventricular tachycardia. The objectives of this study were to: (i) compare electrocardiographic, monophasic action potential, ... -
On the phylogeny of members of Ceratocystis s.s. and Ophiostoma that possess different anamorphic states, with emphasis on the anamorph genus Leptographium, based on partial ribosomal DNA sequences
(2000-07-31)Phylogenetic analysis of partial ribosomal DNA sequences was undertaken to assess the phylogenetic distribution of ophiostomatoid anamorphs with an emphasis on members of Leptographium and the generic limits of Ceratocystis ... -
Analysis of restriction fragment length polymorphisms in the ribosomal DNA of a selection of anaerobic chytrids
(2000-07-31)Anaerobic chytrid strains (representing four genera and seven species based on morphological characters), obtained from a variety of hosts, were analysed for variability within the 5' terminal segment of the ribosomal large ... -
The complex photochemistry of 2,3-dibenzylidenesuccinates
(2000-08-31)The photochemistry of diethyl E,E-2,3-(3,4,5-trimethoxybenzylidene)succinate (8) is solvent dependent. In both protic and aprotic solvents, there is a photoequilibrium established between 8 and its E,Z-isomer (9). In ... -
Glucose disposal by insulin, but not IGF-1, is dependent on the hepatic parasympathetic nerves
(2000-10-31)Insulin-like growth factor-1 (IGF-1) has many insulin-like activities, including stimulation of glucose uptake in skeletal muscle. However, those with diabetes or chronic liver disease are insulin resistant but show a ... -
Development of glass fiber reinforced plastic poles for transmission and distribution lines
(2000-10-31)An extensive research project is currently being carried out at The University of Manitoba, Canada, to develop lightweight glass fiber reinforced plastic (GFRP) poles for use in transmission and distribution networks. In ... -
Purification of the NADP(+): F-420 oxidoreductase of Methanosphaera stadtmanae
(2000-11-30)Methanosphaera stadtmanae (DSM 3091) is a methanogen that requires H-2 and CH3OH for methanogenesis. The organism does not possess an F-420-dependent hydrogenase and only low levels of F-420. It does however possess ... -
Artificial inoculation with Armillaria ostoyae in established conifers stressed by defoliation, planting, and thinning in Newfoundland
(2000-11-30)Armillaria ostoyae (Romagnesi) Herink causes root disease in conifers of the northern hemisphere. Pathogenicity tests of established conifer trees with A. ostoyae, has never been done in the boreal forest. Seven forest ...