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Bibliografie tematiche / Ontario – Hamilton

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Letteratura scientifica selezionata sul tema "Ontario – Hamilton"

Autore: Grafiati

Pubblicato: 25 luglio 2024

Ultima modifica: 31 luglio 2024

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Articoli di riviste sul tema "Ontario – Hamilton"

1

Purcell, John. "Hamilton, Ontario." Raven: A Journal of Vexillology 18 (2011): 70–71. http://dx.doi.org/10.5840/raven20111838.

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2

Barker, H. W. "Isolating the Industrial Contribution of PM2.5 in Hamilton and Burlington, Ontario." Journal of Applied Meteorology and Climatology 52, no. 3 (2013): 660–67. http://dx.doi.org/10.1175/jamc-d-12-0163.1.

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Abstract (sommario):

AbstractHourly measurements of particulate matter that is smaller than 2.5 μm in diameter (PM2.5) have been made at air-monitoring sites in Hamilton and Burlington, Ontario, Canada, since 2003. These sites are separated by ~6 km; Burlington is right on Lake Ontario while Hamilton has, directly to the east, very heavy industry between it and Lake Ontario. Hence, by taking the difference between measurements at Hamilton and Burlington, it is possible to isolate, during east-wind conditions, PM2.5 that result from emissions from the industrial sectors (primarily steel mills) located in Hamilton’s northeast end. After screening the data for east winds off Lake Ontario, it was found that median background values of PM2.5, of 5–10 μg m−3 are increased by an additional 5–10 μg m−3 by emissions from local sources. On the contrary, however, industrial contributions to PM2.5 in Burlington during south winds are much smaller at ~3 μg m−3 (industrial sectors are due south of Burlington). This difference is likely due either to wind direction–dependent local circulation patterns or to alignment of sources that can concentrate PM2.5 into Hamilton. It was also found that throughout much of 2009, but especially during spring and early summer, the industrial contribution of PM2.5 at Hamilton was reduced relative to other years by amounts that are statistically significant at the 95% confidence level, even when measurements are augmented with large amounts of Gaussian noise. These reductions are consistent with documented reductions in steel production during the global economic crisis that peaked in the first half of 2009.

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3

Barica, J., M. N. Charlton, D. J. Poulton, and R. Kohli. "Water Exchange Between Lake Ontario and Hamilton Harbour: Water Quality Implications." Water Quality Research Journal 23, no. 2 (1988): 213–26. http://dx.doi.org/10.2166/wqrj.1988.014.

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Abstract Hamilton Harbour is an enclosed body of water situated at the western end of Lake Ontario and containing about 2.8 x 108 m3 of water, polluted by municipal and industrial effluents. It is connected to Lake Ontario by a ship canal, which facilitates a substantial exchange of water between the two water bodies. Exchange of harbour and lake water through the canal reduces the theoretical hydraulic residence time of the harbour and contributes to improvement of the harbour water quality through dilution and oxygenation. Without it, the Hamilton Harbour water quality situation would be more critical. The beneficial effect of dilution by Lake Ontario far exceeds contamination of western Lake Ontario by Hamilton Harbour water.

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4

Kitchen, Peter, Allison Williams, and Dylan Simone. "Measuring Social Capital in Hamilton, Ontario." Social Indicators Research 108, no. 2 (2012): 215–38. http://dx.doi.org/10.1007/s11205-012-0063-3.

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5

Bain, Alison L. "Neighbourhood artistic disaffiliation in Hamilton, Ontario, Canada." Urban Studies 54, no. 13 (2016): 2935–54. http://dx.doi.org/10.1177/0042098016658390.

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This article argues that the creative drive of cultural workers to envision alternative urban futures and to make real changes in neighbourhoods in the urban present, while politically powerful and imaginatively seductive to urban decision-makers, contains destructive impulses. Such a drive can challenge, but also reinforce, the established social order and unequal power relations. This article critically examines the spatial politics of creative destruction that can unfold in the place-making wake of cultural workers. A case study is used from the mid-sized, industrial city of Hamilton of a deprived inner-city neighbourhood that is informally being reimagined as an arts district. In this neighbourhood, some cultural workers selectively practice middle-class disaffiliation. Individual acts of avoidance, control and destruction function as withdrawal strategies to help minimise the negative externalities of crime and social disorder and to realise a vision of this neighbourhood in their own image.

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6

Editorial Office, CUAJ. "Laparoscopic Urology Fellowship, McMaster University, Hamilton, Ontario." Canadian Urological Association Journal 7, no. 7-8 (2013): 286. http://dx.doi.org/10.5489/cuaj.1607.

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7

Lobo, D., C. DeBenedet, C. Fehlner-Gardiner, et al. "Épidémie de rage du raton laveur à Hamilton, en Ontario : rapport sur l’évolution du cas." Relevé des maladies transmissibles au Canada 44, no. 5 (2018): 130–36. http://dx.doi.org/10.14745/ccdr.v44i05a05f.

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8

Ho, K. M., W. L. Seaman, T. M. Choo, and R. A. Martin. "AC Hamilton barley." Canadian Journal of Plant Science 75, no. 3 (1995): 697–98. http://dx.doi.org/10.4141/cjps95-118.

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AC Hamilton is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar bred at the Plant Research Centre, Agriculture and Agri-Food Canada, and evaluated by the Eastern Canada Barley Breeding Group. It was selected from a Leger/OAC Kippen cross and is suitable for growing in Ontario, where it outyielded the check cultivars AC Stephen and Chapais. AC Hamilton is moderately resistant to powdery mildew (Erysiphe graminis f. sp. hordei) and is resistant to septoria leaf blotch (Septoria passerinii). Key words:Hordeum vulgare L., six-rowed barley, feed barley, high yield, powdery mildew

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9

Fox, M. E., R. M. Khan, and P. A. Thiessen. "Loadings of PCBs and PAHs from Hamilton Harbour to Lake Ontario." Water Quality Research Journal 31, no. 3 (1996): 593–608. http://dx.doi.org/10.2166/wqrj.1996.033.

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Abstract (sommario):

Abstract Large-volume water samples were collected from the ship canal connecting Hamilton Harbour and Lake Ontario while detailed simultaneous measurements of water speed and direction were made. The 10-day sampling period in July 1989 and a 14-day sampling period in March 1991 were considered representative of typical stratified summer and unstratified winter flow regimes. The water samples were analysed for PCBs and PAHs, which are known major organic contaminants in Hamilton Harbour. Supporting physicochemical measurements were also made. The water movement data were combined with the contaminant concentrations and the uniform channel dimensions to calculate annual loadings of 2.8 kg/ year PCBs and 37.5 kg/ year PAHs from Hamilton Harbour to Lake Ontario. These estimates were compared to other published estimates of loadings of these compounds from Hamilton Harbour and also from the atmosphere and the Niagara River. It was concluded that Hamilton Harbour is not a significant source of these compounds in comparison to the atmosphere and the Niagara River. The PAH export estimate was found to be small when compared to in situ sediment burdens of PAHs and also present day discharges to the harbour.

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10

Barica, J. "Ammonia and Nitrite Contamination of Hamilton Harbour, Lake Ontario." Water Quality Research Journal 25, no. 3 (1990): 359–86. http://dx.doi.org/10.2166/wqrj.1990.019.

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Abstract (sommario):

Abstract The temporal and spatial distribution of total and toxic unionized ammonia, nitrite, nitrate and total dissolved nitrogen concentrations in Hamilton Harbour, Lake Ontario, were investigated during 1987–1988. The concentrations of toxic un-ionized ammonia in vertical and horizontal profiles depended on ammonia loadings from the Hamilton and Burlington municipal sewage treatment plants, the seasonal nitrogen cycle, pH and water temperature. Toxic ammonia levels in the Harbour exceeded the International Joint Commission objective of 20 μg/L at all sampling sites for about half of the year (spring and summer). For extended periods in the late spring and mid-summer, concentrations frequently exceeded the chronic toxicity threshold of 300 μg/L. Toxic un-ionized ammonia concentrations were distributed unevenly over the Harbour with a distinct areal zonation and patchiness. Volatilization of ammonia, estimated at 6.8 tonnes per summer, reduced the toxic effect but was insignificant in the overall NH3-N budget. The nitrite concentrations exceeded the chronic toxicity thresholds of 30 μg/L for most of the summer and frequently surpassed the cold-water fish toxic levels of 250 μg/L. Near the outfall from the Hamilton sewage treatment plant, nitrite levels were 600–1,200 μg/L. The frequency of nitrite toxic episodes was however lower than those of un-ionized ammonia. Nitrite was less abundant than total ammonia and can be considered as a less serious contaminant. Nitrification in Hamilton Harbour appeared to be inhibited by high toxic un-ionized ammonia levels.

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