Browsing by Discipline
Now showing items 101-120 of 298
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The effects of climate change on the growth and spawning phenology of fishes in aquatic boreal environments
(2022)Global climate change is occurring and observed warming patterns have had significant impacts on aquatic environments as trends in water temperature are closely related to trends in air temperature. In ectothermic organisms ... -
Effects of copper, zinc and cadmium on the pigments and photosynthesis of black spruce (Picea mariana (Mill.) B.S.P) seedlings
(1995)The purpose of this study was to quantify the effects of heavy metals on pigments and photosynthesis in four and a half month old black spruce (Picea mariana (Mill.) B.S.P.) seedlings. Photosynthetic pigment analysis by ... -
Effects of depressed pH on reproduction, growth and survival of flagfish, Jordanella floridae (Good and Bean)
(1978)Breeding communities of flagflsh {Jordanella floridae) were exposed to adjusted pH levels of 6.0, 5.5, 5.0, 4.5 and 4.0 for 21 days. Control water (pH 7.5) received no acid treatment. Egg production was significantly ... -
Effects of depressed pH on survival, growth and reproduction of brook trout, Salvelinus fontinalis (Mitchill)
(1977)Brook trout were continuously exposed to depressed pH values from 4.0 to 6.0, at 0.5 unit Intervals during a nine-month partial-chronic bloassay. At all pH levels above 4.0, Juvenile fish exhibited greater than 96 per ... -
Effects of different forms of prostate specific antigen on prostate cancer cell invasion / by Andrew Philip Cumming
(2007, c200)Prostate cancer (PCa) is one of the most common cancers in males around the world. Prostate-specific antigen (PSA) is a serine protease that is secreted at high levels by prostate epithelial cells and most prostate cancer ... -
Effects of electrial stimulation and isokinetic exercise on serum enzymes and electrolytes
(1986)The purpose of this study was to determine the effects of short-term electrical stimulation of the quadriceps muscle, isokinetic leg extension and flexion exercise, and combined electrical stimulation and isokinetic ... -
Effects of flavopiridol on Cdk2 activity in cultured cell lines
(2005)Flavopiradol reduced cyclin-dependent kinase activity by competititve inhibition with ATP by binding to the ATP-binding pocket of these cell cycle regulators ... it was thought that flavopiradol would be an excllent inhibitor ... -
The effects of invasive dreissenid mussels on the offshore food web of Lake Simcoe, Ontario
(2019)Dreissenid mussels have successfully invaded North America, including the Great Lakes and their surrounding waterbodies. With their establishment, there have been many notable impacts including the rerouting of energy flow ... -
Effects of macrophyte cutting on a whole lake ecosystem
(2023)Macrophytes are of significant importance to aquatic ecosystems, generating primary production in nearshore environments and providing physical structure and habitat for organisms in the littoral zone of lakes. Macrophyte ... -
Effects of manual, mechanical, and aerial herbicide conifer release on songbird numbers in regenerating spruce plantations in Northwestern Ontario
(1997)This study examined the effects of conifer release with herbicides [Vision® (glyphosate) ], [Release® (triclopyr) ] , and proposed alternatives to herbicides with manual brush saws and mechanical brushsaws, on breeding ... -
The effects of naturally-derived plant compounds on pseudomonas aeruginosa pathogenicity
(2014-12-12)Pseudomonas aeruginosa has risen as one of the most resistant bacterial pathogens affecting people worldwide. Inefficacy of current antimicrobial treatments to relieve P. aeruginosa infections demands the need for novel ... -
Effects of regular long term hemodialysis on serum electrolytes and parathyroid hormone levels
(1978)Regular long term hemodialysis is the accepted method of treatment for patients with advanced renal failure. While it is effective in maintaining a patient in reasonably good health for long periods of time many problems ... -
Effects of selected biotic and abiotic factors on growth and survival of young crayfish, Orconectes virilis (Hagen)
(1988)The growth and survival of Orconectes virilis young was studied in 50 x 50 x 50 cm lake enclosures during the summer seasons of 1986 and 1987. The effects of density (12/m2, 40/m2, 160/m2), substrate (mud, sand, ... -
Effects of timber management practices on the use of aquatic feeding areas by moose (Alces alces) in the Great Lakes-St. Lawrence and boreal transition forests of Central Ontario
(2003)During spring and summer in Ontario, moose are commonly observed at sites known as moose aquatic feeding areas. Feeding on aquatic vegetation is thought to be an important source of sodium for moose at this time of year. ... -
Effects of ultra violet and visible light on bacterial survival / by Natasha Vermeulen.
(2006)The optical dose in mJ/cm[superscript]2 for causing mortality of Escherichia coli, using wavelengths between 230-375 nm in the UV and 400-532 nm in the mid-visible spectral regions, has been determined in this study. ... -
Effects of water depth increases on the production and growth of wild rice, Zinzania aquatica L.
(1987)Wild rice, grown in plastic buckets suspended from specially designed rafts, was subjected to increases in water depth during the submerged-leaf, first floating-leaf, second floating-leaf, and the first aerial-leaf ... -
Efficacy and optimization of molecular techniques for sexing skeletonized human remains
(2003)Forensic anthropologists and bioarchaeologists are often confronted with the problem of sex determination in poorly preserved, skeletonized, adult, human remains. This thesis tests the ability o f newly developed DNA ... -
Efficacy of a multimolecular extraction from formalin-fixed paraffin-embedded tissue
(2021)As the genetic basis and gene expression components are being discovered for an increasing number of diseases and disorders there is a rising interest in using multiomic approaches to better understand these conditions. ... -
Efficacy of bacteria and caffeine as indicators of anthropogenic waste in freshwater systems
(2018)With urban sprawl and intensified agriculture, nutrient loading of waterways has become a pressing issue across southern Ontario. Domestic wastes are more likely than other wastewater sources to be associated with the ... -
Efficacy of various Hypholoma spp. and Phlebiopsis gigantea as biocontrol agents against root rotting fungi Armillaria ostoyae
(2019)Conifer plantations are thinned to maximise production of high-quality timber for lumber, fire wood, and utility poles. However, thinning increases susceptibility to pathogens such as Armillaria ostoyae, a native basidiomycete ...