1,668 Works

Delayed recovery and chronic disability in patients with whiplash-associated disorders

John Andrew Dufton
Whiplash is a common injury after a motor vehicle collision resulting in significant pain and disability for those injured. The prognosis of these disorders is highly variable and difficult to predict and evidence suggests that both medical and external non-injury related factors are important in determining recovery. This study is an extensive exploratory analysis investigating the association between a number of personal, clinical, and non-injury related factors and delayed clinical improvement after soft-tissue injuries sustained...
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Cluster-based information retrieval modeling

Richard Sze
Cluster-based information retrieval, an extension of information retrieval strategy, is based on the assumption that a document collection can be organized into a set of topics so that a user can enhance retrieval effectiveness. The cluster-based IR model assumes that queries can be associated with clusters that contain high concentrations of relevant documents, and that such association can lead to gains in retrieval effectiveness. Earlier studies, however, have provided negative to mixed results for the...
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Comparative analysis of the Northern and Southern Athapaskan "Slayer of Monsters" Myth

Robert James Stewart Tyhurst
This thesis examines the distribution of three portions of narrative action, or motifs, which are found in the mythology of the Northern and Southern Athapaskan peoples. In the Eagle motif, a man enters an eagles' nest, in the Bull motif, a man slays a large monster with the help of a rodent or small rodent-like animal, and in the Cliff Ogre motif, a man pushes a monster off a cliff to its death. These motifs,...
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Molecular modulation of the lymphohaemopoietic system

Amanda Tomlinson Jones
The immune system has evolved to enable recognition of a huge variety of antigens with high specificity via the production of large quantities of reactive antibody. The ability to direct both the specifities and the quantity of antibody production to derive antibodies with high affinities and pre-determined specificities has been an important advance in our exploration of the functions of the lymphohaemopoietic system. This thesis details two separate projects which have as their common theme...
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An investigation of in-vessel composting process control strategies

Bud S. Fraser
Composting provides environmental benefits including an alternative method for organic waste disposal, as well as improving soil fertility. However poor compost quality and odour emission are often significant problems in the composting industry. Composting process control can potentially help reduce both of these problems. In spite of the recent development of a number of process control strategies, very few direct comparisons have been made between these, particularly in terms of compost quality and odour emission....
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The Chinese people’s liberation army in the 1960’s : ideal and reality

Randolph Vincent Craig Louis
The subject of the paper is the nature of the Chinese People's Liberation Army (PLA) during the 1960s. The primary aim is to analyze the basic characteristics of this complex bureaucratic institution, especially its internal nature and its relationship to society. The principal problem explored is whether the PLA in the 1960s developed into a distinct, professionalized military organization (as is the common pattern in the West) or whether it remained relatively close to its...
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Studies on pyridine : thiourea and substituted thiourea complexes of cobalt (II) arylcarboxylates

Chun Tong Wong
A number of new thiourea and substituted thiourea complexes of cobalt(II) carboxylates, Co(RCO₂)₂•L₂ (where RCO₂ is acetate or arylcarboxylate and L is thiourea, ethylenethiourea or N,N'-dimethylthiourea), have been prepared and characterized, mainly by spectral studies in the infrared, near-infrared and visible regions and by magnetic susceptibility studies over the temperature range 80 - 320 ⁰K. These studies have shown that, the molecular structures involve a pseudo-tetrahedral ligand environment about cobalt with two oxygen and two...
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Flash photolysis of intermediates in hydrated electron reactions

Suinil Kumar Vidyarthi
A triple flash photolysis apparatus is described. Hydrated electrons (e[sup - / sub aq]) produced by U.V. flash photolysis of some common inorganic anions (OH⁻, SO[sup = / sub 4]) were monitored at 633 nm. This species was identified by its absorption spectrum and by the effect of well known electron scavengers. In the absence of an electron scavenger, e[sup - / sub aq] decayed largely by a second order process to form a comparatively...
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Study of molecular motion on main group III and V addition complexes by broadline and pulse NMR.

Tian Tse Ang
The proton magnetic resonance absorption and spin-lattice relaxation measurements have been carried out on Me₃N-BMe₃, Me₃N-AℓMe₃, Me₃P-BMe₃, Me₃P,Me₃B, Me₂NH-BMe₃, Me₂NH- AℓMe₃, Me₃NBBr₃, Me^NBB^, and trimethylamine-halogen complexes in order to study the molecular motion and phase transitions of these complexes in the solid state between 77 K to their melting points. The activation energies and rate parameters associated with these motional processes are reported. The second moment data of all the trimethyl amine addition complexes indicate...
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Studies in 57Fe and 121Sb Mossbauer spectorscopy

James Charles Stewart Scott
A number of iron carbonyl complexes of the general formula LFe₂(CO)₆ (L = fluoroalicyclic-bridged di (tertiary arsine or phosphine)) have been investigated by Mossbauer spectroscopy and the results are consistent with the known structure of f₄farsFe₂(CO)₆. As well, a number of derivatives of the general formulae L[sup m]LFe₂(CO)₅ (L[sup m] = monodentate ligand), L[sup c]LFe₂(CO)₄ (L[sup c] = bidentate ligand, chelating), and L[sup b]LFe₂(CO)₄ (L[sup b] = bidentate ligand, bridging) have been examined. The Mossbauer...
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Mainline railway electrification : an economic feasibility model

William David Johnston
The projected growth in demand for intercity freight transportation, growth in rail transit in urban areas, the requirements of intercity rail passenger service, and sensitivity to depletion of natural and environmental resources, particularly fuels and air quality, is spurring the evaluation of electric locomotives as an alternative to the diesel-electric. Of all the modes of transportation, only rail can be feasibly converted from petroleum fuel to hydro, coal, or nuclear-fueled electric energy. The technology of...
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Using swimming speed and morphological attributes of fish derived from video image analysis to assess grilse proportion and segregation in mixed population of maturing and non-maturing Atlantic salmon (Salmo salar L.) reared in sea cage

Eric Louis Boucher
More effective ways to manage mixed populations of maturing and non-maturing Atlantic salmon are needed, and a method to predict the percentage of maturing salmon would be ideal. Maturing fish are known to swim slower and have a larger condition factor (K) than non-maturing fish, and if differences are large, bimodality could be evident in swimming speed and K factor data collected from mixed populations, and used to predict the grilse (maturing salmon) percentage. To...
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Treatment acceptability of choice-making interventions for adults with developmental disabilities

Francesca Marie Barth
The lives of people with developmental disabilities are often characterized by few opportunities to make choices. Increasing choice-making opportunities for people with developmental disabilities is important because research has shown that choice-making is related to both improved quality of life and reductions in challenging behaviour. Direct-care service providers who work in residential group home settings may lack the skills and/or knowledge about how to increase choice-making opportunities for the people with whom they work. Thus,...
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Branched-chain nucleosides : synthesis of structural analogs of the polyoxin complex and of puromycin

Colin Maxwell Richards
The synthesis of a number of 3-C-cyanomethyl-2,3-dideoxy-hexo-pyranosides, pentofuranosides and pentopyranosides and the conversion of these compounds to their respective purine nucleosides are reported. Methyl 4,6-0-benzylidene-2-deoxy-α-D-erythro-hexopyranosid-3-ulose (127) was condensed with the carbanion formed from diethylcyano-methylphosphonate and sodium hydride to afford the unsaturated compounds methyl 4,6-0-benzylidene-E-(and Z)-3-C-cyanomethylene-2, 3-dideoxy-α-D-erythro-hexopyranoside (128 and 129). Acid hydrolysis of 128 gave the unblocked α,β-unsaturated nitrile 141. Hydrogenation of 128 afforded methyl 4,6-0-benzylidene-3-C-cyanomethyl-2, 3-dideoxy-α-D-ribo-hexo-pyranoside (140) which was subsequently debenzylidenated, p-chlorobenzoylated, and fused directly...
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Electrical properties and defect structure of cuprous chloride

Mahendra Prasad
Measurements of electrical conductivity (σ), thermoelectric power (θ) and transport numbers in the temperature range 24 - 240°C have been made on CuCl in the pure state and after reaction with chlorine to varying extents. Attempts to measure the Hall Effect gave negative results for all samples. Data for pure CuCl confirm earlier reports that conduction is electronic (positive hole) at low temperatures and ionic (cation inter- stitials) at higher temperatures (above 160°C, for our...
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Microwave spectroscopic studies of chloryl fluoride and acetaldehyde-D1

Charles Robert Parent
The microwave spectra of three isotopic species of chloryl fluoride, ³⁵Cl¹⁶O₂F, ³⁷Cl¹⁶O₂F, and ³⁵Cl¹⁶O¹⁸OF, have been measured and the transitions fit to Watson's nonrigid rotor reduced Hamiltonian. The resulting rotational constants have allowed the calculation of a molecular structure that features an anomalously long Cl-F bond and unusually short Cl-O bonds. The nuclear quadrupole coupling constants and electric dipole moment have also been determined and both suggest the withdrawal of considerable electron density from the...
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Comparison of computer-based terrain storage methods with respect to the evaluation of certain geomorphometric measures

David Michael Mark
Topographic information can be digitized in several ways. Sampling may be surface-random (points selected according to partially or completely arbitrary criteria) or surface-specific (points selected according to their topographic significance). Surface-random sampling includes grids, contours, and randomly-located points. In this study, grid sampling and surface-specific sampling are compared. Surface behavior between sampled points is assumed to be linear. All aspects of surface form can be considered to reflect surface roughness. Horizontal variation includes the concepts...
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Synthetic studies in salamander alkaloids

Joseph Kenneth Paisley
Part I, describes an efficient four step method to effect an unsymmetric ring cleavage between carbons 2 and 3 in the A ring of 17β-acetoxy-5β-androstan-3-one (81b). Bromination of 81b followed by treatment with sodium acetate in refluxing acetic acid gave 2β,17β-diacetoxy-5β-androstan-3-one (159) in good yield. Subjecting 159 to hydroxylamine hydrochloride-sodium acetate in refluxing methanol afforded anti 17β-acetoxy-2β-hydroxy-58-androstan-3-one oxime (187) in 75-85% crude yield. Beckmann fragmentation of 187 by employing thionyl chloride furnished 17β-acetoxy-2-oxo-2,3-seco-5β-androstane-3-nitrile (195) in...
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Transannular cyclisations ot 6-substituted cyclodecynes and attempted synthesis of samanine

R. Balaji Rao
Part I The transannular cyclisation reaction of cyclodecyn-6-one (21), cyclodecyn-6-ol (38) and 6-methyl cyclodecyn-6-ol (39) were investigated, with the view of synthesising bicycle[5.3.0] decane system ( 1 ). Compound 21 when treated with several proton acids in a variety of solvents ranging in polarity from hexane to methanol, yielded only octalin, which is a bicyclo[4.4. 0] decane system ( 2 ) . Treatment of 21 with lithium in ammonia-THF followed by oxidation, yielded Δ[sup 1,7]bicycle[5.3.0]...
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Summer growth near salmon sea cages and nitrogen uptake of kelp

Ok-Hyun Ahn
The purpose of this study was to test the hypothesis: a fish farm can fertilize kelp during summer when only nitrogen is a limiting factor for the growth of kelp. Temperature (10.0-14.7°C), salinity (22.3-30.0%o), water visibility (3.5-9.5 m) and daytime-irradiance data at 2 m depth in summers of 1995 and 1996 indicated suitable levels for the growth of kelp. Three kelp species, Laminaria saccharina, L. groenlandica and Nereocystis luetkeana, were collected from salmon fish farm...
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U.H.F. radio echo sounding of Yukon glaciers

Brian Barry Narod
A high-resolution radio echo sounder operating at a frequency of 840 MHz has been developed for sounding of small and medium-sized polar glaciers and ice caps. The sounder uses a compact, high-gain antenna which improves the system performance, suppresses valley wall echoes and simplifies operation from light aircraft. Successful field trials were carried out on the Rusty, Trapridge and Hazard Glaciers, Yukon Territory, Canada. Results of airborne surveys compare well with ice depths obtained from...
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Secondary dispersion of transition metals through a copper-rich bog in the Cascade Mountains, British Columbia

Raymond Ernest Wingrove Lett
Horizontal and vertical variations of copper, cobalt, iron, manganese, molybdenum, nickel, zinc, organic carbon and pH were studied in a small bog close to a known copper-mineral occurrence in the foothills of the Cascade Mountains, British Columbia This bog consists of up to 3 m thickness of moderately decomposed, water saturated, fetid organic material underlain by glacial till that almost completely covers the contact between copper-mineralized Nicola Group volcanic rocks and porphyry dykes. Soils with...
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Circular dichroism of nitrate esters

Richard Edgar Barton
The circular dichroism of optically active alkyl cyclo-hexyl-, bicyclo [2.2.1] heptyl-, and oxolanyl nitrates was measured. A chirality rule is proposed which correlates the stereochemistry of the nitrate esters with the sign of their 230 nm CD bands: when the planar nitrato chromophore is oriented in right-handed rectangular cartesian coordinates with the alkoxyl oxygen at the origin, the C-O bond on the z axis, and the nitro moiety in the positive yz plane, the sign...
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McDougall’s conception of the group mind

Stanley Fyfe Middleton Moodie
[Abstract not available]
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Modern theories of instinct

Herbert Baxter King
[Abstract not available]
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  • 2015
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