Browsing Faculty of Science by Title
Now showing items 1476-1495 of 2564
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A Meta-Analysis of Community Response Predictability to Anthropogenic Disturbances
(2012-09)Disturbances often lead to changes in average values of community properties; however, disturbances can also affect the predictability of a community's response. We performed a meta-analysis to determine how response ... -
A Meta-Analysis of Probiotic Efficacy for Gastrointestinal Diseases
(2012-04)Background: Meta-analyses on the effects of probiotics on specific gastrointestinal diseases have generally shown positive effects on disease prevention and treatment; however, the relative efficacy of probiotic use for ... -
Metabolism of dietary cetoleic acid (22 : 1n-11) in mink (Mustela vison) and gray seals (Halichoerus grypus) studied using radiolabeled fatty acids
(2006-07)Cetoleic acid (22:1n-11) is a good indicator of diet in marine predators and has proven to be an important fatty acid (FA) when using adipose tissue FA composition to study diet in marine mammals and seabirds. Feeding ... -
The metabolism of histamine in the Drosophila optic lobe involves an ommatidial pathway: beta-alanine recycles through the retina
(2012-04)Flies recycle the photoreceptor neurotransmitter histamine by conjugating it to beta-alanine to form beta-alanyl-histamine (carcinine). The conjugation is regulated by Ebony, while Tan hydrolyses carcinine, releasing ... -
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Metamorphism of Metabasites from Parry Island, Georgian Bay, Ontario
(1992-04-15)A garnet amphibolite body in the Parry Island shear zone, Central Gneiss Belt, Grenville Province, shows textural and mineralogical evidence of retrograde metamorphism to amphibolite facies. Garnets with plagioclase coronas, ... -
Metamorphism of the George River Group; Gold Brooks, Victoria County, Cape Breton Island, Nova Scotia.
(1979-03-15)The Precambrian George River Group of Cape Breton Island, Nova Scotia is characterized by metasediments and metavolcanic rock types. A sequence of predominantly feldspathic quartzites slates and quartzites at Gold Brooks ... -
A Method for Assessing Coastal Vulnerabilities to Climate Change within an Arctic Community: The Example of Tuktoyaktuk, Northwest Territories
(2013-10-03)Climate change is posing problems to people throughout the world, but due to the biophysical and socioeconomic characteristics of indigenous Arctic communities, they are some of the most vulnerable in the world. Vulnerability ... -
Methodological Underestimation of Oceanic Nitrogen Fixation Rates
(2010-09)The two commonly applied methods to assess dinitrogen (N(2)) fixation rates are the (15)N(2)-tracer addition and the acetylene reduction assay (ARA). Discrepancies between the two methods as well as inconsistencies between ... -
Methods for selecting fixed-effect models for heterogeneous codon evolution, with comments on their application to gene and genome data
(2007)Background: Models of codon evolution have proven useful for investigating the strength and direction of natural selection. In some cases, a priori biological knowledge has been used successfully to model heterogeneous ... -
Methyl iodide distribution in the ocean and fluxes to the atmosphere
(1999-05)Methyl iodide concentrations have been measured in air samples, surface, and subsurface waters of the NW Atlantic, NE Atlantic, and Pacific Oceans. They are shown to be substantially oversaturated in all surface waters. ... -
Methyl iodide in the NW Atlantic: Spatial and seasonal variation
(2009-07)While the global ocean is an important source of atmospheric methyl iodide (CH(3)I), the major producers of CH(3)I within the ocean remain unclear. During a seasonal study in the NW Atlantic, the relationship between CH(3)I ... -
Methyl iodide in the NW Atlantic; spatial and seasonal variation
(American Geophysical Union, Washington, DC, 2009)While the global ocean is an important source of atmospheric methyl iodide (CH (sub 3) I), the major producers of CH (sub 3) I within the ocean remain unclear. During a seasonal study in the NW Atlantic, the relationship ... -
Methyl-Chloride (Ch3cl) Production in Phytoplankton Cultures
(1995-01)Unialgal nonaxenic cultures of seven species of phytoplankton, including both warm- and cold-water organisms, were examined under halocarbon-clean conditions for the production of CH3Cl. Incubations of all species showed ... -
Micro-petrological Analysis of Shergottite Meteorite North West Africa 4468
(2019-04-15)This study investigates the chemical variations within mineral phases in the Martian meteorite sample North West Africa (NWA) 4468. Meteorites are the only samples of Martian rocks that can be studied directly. Their ... -
Microsatellite and allozyme analyses reveal few genetic differences among spatially distinct aggregations of geoduck clams (Panopea abrupta, Conrad 1849)
(2004-12)The genetic population structure of geoduck clams (Panopea abrupta) in inland waters of Washington may affect fishery management and aquacultural practices involving this species. To investigate genetic differentiation ... -
Microwave-accelerated synthesis of benzyl 3,5-dimethyl-pyrrole-2-carboxylate
(2006-12)Benzyl 3,5-dimethyl-pyrrole-2-carboxylate, a very useful pyrrole in porphyrin and dipyrromethene synthesis, can be synthesized via the Knorr-type reaction, but in low yield. Alternative routes to benzyl 3,5-dimethyl-pyrr ...