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Now showing items 11-20 of 171
Tamarack response to salinity: effects of sodium chloride on growth and ion, pigment, and soluble carbohydrate levels
(2005-12-31)
The extraction of bitumen from oil sands can increase levels of sodium and chloride in boreal forest soils. A study was designed to test the effect of 30 and 60 mmol/L NaCl on 6-month-old tamarack (Larix laricina (Du Roi) ...
Response of red-osier dogwood (Cornus sericea) seedlings to NaCl during the onset of bud break
(2006-05-31)
A greenhouse study was designed to test the response of red-osier dogwood (Cornus sericea L.) to NaCl during the onset of bud break. Seedlings treated with 50 mmol center dot L-1 NaCl for 32 d had lower shoot dry mass and ...
Nitrifying bacteria addition into reactors operating near washout conditions for nitrification
(2005-07-31)
Sequencing batch reactors, at 10 degrees C, operating near the minimum solids retention time (washout conditions) for nitrification, were seeded daily with nitrifying biomass acclimated to 10 and 20 degrees C. Effluent ...
Windrow composting of municipal biosolids in a cold climate
(2005-09-30)
This work investigated the technical feasibility of composting digested municipal biosolids using outdoor windrows in an extremely cold climate. Common belief suggested this was not possible because of low ambient temperatures ...
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 ...
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, ...
Lichens from the Hudson Bay Lowlands: Northeastern coastal regions of Wapusk National Park in Manitoba
(2005-08-31)
Lichens are an important component of most terrestrial ecosystems including the subarctic tundra. A narrow band of raised calcareous beach ridges on the Hudson Bay Lowlands supports subarctic tundra alternating with incipient ...
Wastewater biosolids: an overview of processing, treatment, and management
(2001-01-31)
Treated as a valuable resource, municipal sludge, often today referred to as biosolids, is processed through a variety of novel unit operations leading to a safe, aesthetically pleasing, and sought-after product. The design ...
Influence of suction on the strength and stiffness of compacted sand-bentonite
(2002-08-30)
The paper proposes a new elastic-plastic framework for unsaturated, high-plasticity, clayey soils and sand-clay mixtures. The framework considers possible coupling of stress- and suction-induced hardening, leading to a ...
Phase shift bandwidth and scan range in microstrip arrays by the element frequency tuning
(2006-05-31)
In this paper, the far-field phase shift properties of microstrip patch antennas are investigated. It is shown that, similar to reflectarrays, the resonant nature of microstrip patches can be used to change the phase of ...