971 resultados para Labour movement--Ontario--St. Catharines Region--History
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Receipt from N.R. Macgregor, St. Catharines for groceries, Dec. 10, 1887.
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Receipt from James Mills, St. Catharines for prescriptions, Dec. 1, 1887.
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Receipt from McSloy Bros., St. Catharines for baked goods, Dec. 2, 1887.
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Receipt from E.D. Radcliffe, St. Catharines for ice, Dec. 5, 1887.
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Receipt from McLaren and Co., St. Catharines for pants, Dec. 23, 1887.
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Receipt from M.Y. Keating, Books, Stationary and Newspapers, St. Catharines for books, Dec. 23, 1887.
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Receipt from St. Catharines and Welland Canal Gas Light Company for gas rent, Dec. 31, 1887.
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Receipt from H. Carlisle and Co., St. Catharines for fabric, Jan. 3, 1888.
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Receipt from W.H. Eckhardt, Star Music Store, St. Catharines for rent of machine, Feb. 1, 1888.
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Letter to T. H. Wiley from J.J. Nichols and Sons, Mason Contractors and Plasterers, St. Catharines regarding tenders for the proposed lily pond, May 12, 1916.
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Letter to Mr. Welland D. Woodruff from Thos. Wiley, Architect, St. Catharines regarding tenders for the proposed lily pond, May 17, 1916.
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Political science is both a generalizing and an anchored, nationally defined, discipline. Too often, the first perspective tends to crowd out the latter, because it appears more prestigious, objective, or scientific. Behind the international/national dichotomy, there are indeed rival conceptions of social science, and important ontological, epistemological and methodological assumptions. This article discusses these assumptions and stresses the critical contribution of idiographic, single-outcome studies, the importance of producing relevant, usable knowledge, and the distinctive implications of studying one’s own country, where a scholar is also a citizen, involved in more encompassing national conversations. The aim is not to reject the generalizing, international perspective, or even the comparative approach, but rather to reaffirm the importance of maintaining as well, and in fact celebrating, the production of social scientific knowledge directly relevant for our own times and places.
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Biogeochemical processes in the coastal region, including the coastal area of the Great Lakes, are of great importance due to the complex physical, chemical and biological characteristics that differ from those on either the adjoining land or open water systems. Particle-reactive radioisotopes, both naturally occurring (210Pb, 210Po and 7Be) and man-made (137Cs), have proven to be useful tracers for these processes in many systems. However, a systematic isotope study on the northwest coast of the Keweenaw Peninsula in Lake Superior has not yet been performed. In this dissertation research, field sampling, laboratory measurements and numerical modeling were conducted to understand the biogeochemistry of the radioisotope tracers and some particulate-related coastal processes. In the first part of the dissertation, radioisotope activities of 210Po and 210Pb in a variability of samples (dissolved, suspended particle, sediment trap materials, surficial sediment) were measured. A completed picture of the distribution and disequilibrium of this pair of isotopes was drawn. The application of a simple box model utilizing these field observations reveals short isotope residence times in the water column and a significant contribution of sediment resuspension (for both particles and isotopes). The results imply a highly dynamic coastal region. In the second part of this dissertation, this conclusion is examined further. Based on intensive sediment coring, the spatial distribution of isotope inventories (mainly 210Pb, 137Cs and 7Be) in the nearshore region was determined. Isotope-based focusing factors categorized most of the sampling sites as non- or temporary depositional zones. A twodimensional steady-state box-in-series model was developed and applied to individual transects with the 210Pb inventories as model input. The modeling framework included both water column and upper sediments down to the depth of unsupported 210Pb penetration. The model was used to predict isotope residence times and cross-margin fluxes of sediments and isotopes at different locations along each transect. The time scale for sediment focusing from the nearshore to offshore regions of the transect was on the order of 10 years. The possibility of sediment longshore movement was indicated by high inventory ratios of 137Cs: 210Pb. Local deposition of fine particles, including fresh organic carbon, may explain the observed distribution of benthic organisms such as Diporeia. In the last part of this dissertation, isotope tracers, 210Pb and 210Po, were coupled into a hydrodynamic model for Lake Superior. The model was modified from an existing 2-D finite difference physical-biological model which has previously been successfully applied on Lake Superior. Using the field results from part one of this dissertation as initial conditions, the model was used to predict the isotope distribution in the water column; reasonable results were achieved. The modeling experiments demonstrated the potential for using a hydrodynamic model to study radioisotope biogeochemistry in the lake, although further refinements are necessary.