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Now showing items 545-564 of 3542
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Comparison of methods to determine the carbonation depth in fly ash blended cement mortars
(2014-01-22)Carbonation negatively affects the durability of steel-reinforced concrete structures by causing a decrease in pore solution pH, thus facilitating corrosion which eventually leads to cracking and spalling. Different ... -
Comparison of oxygen consumption and selected kinematics between and within the 1-skate, 2-skate and offset techniques
(2001)The 1-skate, 2-skate and offset techniques are the three most prevalent skate-skiing techniques used during cross-country ski racing. Although kinematic differences at maximum velocity have been observed between techniques ... -
Comparison of Picea mariana, Abies balsamea, Betula papyrifera, Populus tremuloides for the production of wood pellets
(2023)Scientists and international organisations agree that wood pellets are a type of biofuel that is better for the environment than fossil fuels. Wood pellets are produced from the residues in sawmills, ground logs and is ... -
Comparison of policy and legislation to protect nature reserves in Canada and China
(2018)Many animals and plants are extinct because of human activities. The nature reserve is the most effective way to protect natural resources and wildlife. In this paper, I reviewed policies to protect nature reserves in ... -
Comparison of post-harvest sample designs to assess impact to organic forest soils in eastern Manitoba
(2001)Five sampling methods were developed, tested, and compared to assess soil impact from harvesting equipment on organic sites in unfrozen condition. This study pointed to the gap in the literature for such a sample design. ... -
Comparison of risk factors and criminogenic need among incarcerated young offender, probationary young offender and non offender samples
(1995)This research examined some of the risk/need factors that discriminate offending from non-offending youth employing three groups of adolescents at different points on the crime continuum. Non-offenders (n=30), probationary ... -
Comparison of spatial vegetation patterns following clearcuts and fires in Ontario's boreal forests
(2000)The goal of this study was to compare spatial vegetation patterns, based on Landsat TM data, within post-clearcut and post-fire disturbances. Landscapes disturbed during the four decades prior to the collection date of ... -
Comparison of stratification and scarification methods of Sorbus decora, Vitis riparia, and Rhus typhina
(2022)This thesis investigates the effectiveness of three methods in breaking seed dormancy of Sorbus decora, Vitis riparia, and Rhus typhina. The treatment methods studied were mechanical scarification with sandpaper, ... -
A comparison of the effectiveness of ground versus aerial chemical site preparation
(2020)Silviculture operations in northwestern Ontario can include the use of chemical site preparation to remove competing herbaceous vegetation to promote the establishment of conifer seedlings. Aerial and ground applications ... -
A comparison of the hydrothermal alteration systems around the Mo-hosting White Pine intrusion, Utah, and the Buckingham Porphyry, Nevada
(2015)The White Pine Fork Mo porphyry has an estimated resource of 16 Mt of Mo at 0.1% Mo. The host intrusions are K-feldspar- and quartz-porphyritic monzo- to syeno-granites characterised by LREE enrichment, fractionated HREEs ... -
Comparison of the late quaternary sedimentary sequence and paleomagnetic record of the North Bay outlet and a Baffin Island fiord
(1983)The lithology of the Late Quaternary lacustrine sequences of five lakes in the North Bay area differs from one lake to another. However, chronostratigraphically equivalent sections of cores taken from the same lake ... -
Comparison of the on-hand and off-hand straight spikes in volleyball
(1980)The purpose of this study was twofold: 1) to examine the differences between the on-hand side and off-hand side spikes in volleyball in terms of velocity and accuracy, and 2) to evaluate the relationship of the angle ... -
Comparison of the pre-settlement and present diversity of the forests of Central Ontario
(2000)Original Crown Survey notes were used to infer the European pre-settlement forest diversity condition in the management units of Algonquin Park, French-Severn, Nipissing and Temagami in central Ontario, Canada. This ... -
A comparison of the quality of farm and forest soils in the Emo-Rainy River District of Northwestern Ontario
(2020)This thesis explores different aspects of the qualities of soils found in a farmer’s hayfield and nearby forested areas on the West side of Emo, Ontario. Soil qualities of a forest and hayfield sites with multiple plots ... -
A comparison of the quality of hayfield and pasture soils on a Northwestern Ontario farm
(2019)This thesis examines aspects of soil quality between a hayfield and pasture site on a farm in Northwestern Ontario. Soil compaction, pH, and carbon were the main aspects looked at between the two sites. The purpose of this ... -
Comparison of the yellow perch, Perca flavescens Mitchell, populations in Henderson Lake and Savanne Lake, Ontario
(1984)Yellow perch (Perca flavescens) in Henderson Lake exhibit stunted growth and poor condition at all ages. In addition, they have lower fecundity, longer life span, slower maturation rate, and greater survival compared ... -
Comparison of two treatments for math anxiety : rational emotive therapy and relaxation therapy
(1984)The purpose of this study was to compare the effectiveness of two treatments for alleviating math anxiety, rational emotive therapy and relaxation therapy. Thirty-eight subjects were randomly assigned to three groups; ... -
A comparison of two ultra-brief treatments for generalized anxiety disorder symptoms
(2014-12-11)Worrying is a common experience that many people engage in occasionally without issue. However, some individuals are chronic worriers, and some develop generalized anxiety disorder (GAD) due to excessive worry (American ... -
A comparison: forest fires and clear-cut harvesting impacts as disturbances within the boreal forest
(2021)Clear-cut harvesting is often said to be an imitation of fires impact on the landscape when discussing how harvesting is thought out or planned. Clear-cut harvesting and fires have significantly different impacts on the ... -
Competition trials of Pinus banksiana and Populus tremuloides under a range of proportions and densities
(1986)This study was the -first study designed specifically to analyse the competitive effects of density and species mixture for both Pinus banksiana and Populus tremuloides seedlings during the initial stages of growth and ...