17 resultados para steam explosion

em Brock University, Canada


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This essay reviews the decision-making process that led to India exploding a nuclear device in May, 1974. An examination of the Analytic, Cybernetic and Cognitive Theories of decision, will enable a greater understanding of the events that led up to the 1974 test. While each theory is seen to be only partially useful, it is only by synthesising the three theories that a comprehensive account of the 1974 test can be given. To achieve this analysis, literature on decision-making in national security issues is reviewed, as well as the domestic and international environment in which involved decisionmakers operated. Finally, the rationale for the test in 1974 is examined. The conclusion revealed is that the explosion of a nuclear device by India in 1974 was primarily related to improving Indian international prestige among Third World countries and uniting a rapidly disintegrating Indian societal consensus. In themselves, individual decision-making theories were found to be of little use, but a combination of the various elements allowed a greater comprehension of the events leading up to the test than might otherwise have been the case.

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Receipt from Rolph Smith Lithographers by Steam Power and Co. of Toronto for a name plate, Aug. 23, 1886.

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Receipt from John Burrow, Steam and Gas Fitter and Plumber, St. Catharines for work done, March 31, 1887.

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Flyer for the Georgian Bay, Ontario Steam Show, 1983.

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Broadside, 47 cm. x 31 cm. with a coloured picture of a case engine and tender [steam engine] printed by Meyer-Rotier of Milwaukee. On the back is a sketch of a building. This has a stamp on the back which indicates that this is an exhibit in the High Court of Justice in Coburg in the case of Bigelow vs. Powers et al. This item has been torn down the middle and taped. This does not affect the text nor picture, Oct. 11, 1909.

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Early in his landmark ecocritical book The Comedy of Survival, Joseph Meeker develops an intriguing hypothesis about human behaviour. He remarks the species Homo sapiens tend to behave like an invasive or pioneering organism, entering a bio-geographical region and aggressively outcompeting all other species for space and resources. Moreover, he suggests, human cultural traditions, at least in the West, have reinforced such behaviour, continually insisting that the impulses he describes are both necessary and right. While Meeker's work goes on to assess a number of literary works in both the tragic and comic modes, his work never fully explores this hypothesis in the context of human pioneers; that is, there is no ~xploration o( how these themes manifest themselves within our culture and what role they might play in the culture of specific pioneering groups. This project is an attempt at just such an analysis, examining the validity of Meeker's hypothesis through a case study of settler literature in Upper Canada/Ontario between the . years 1800-1867. It explores Meeker's work within three main areas: first, Chapter Two situates his book historically within the field of ecocriticism, showing what came before and the explosion of ecocritical inquiry that followed its release. This chapter also delves into the rift between the natural sciences and humanities, arguing that a move towards deeper interdisciplinarity is r:tecessary for the future. Chapter Three examines the biological and ecological ground on which Meeker rests his hypothesis through exploring evolutionary biology as well as invasive and pioneer species behaviour. Lastly, Chapter Four examines how these ecological principles are manifested in the writings of early Canadian settlers, suggesting that Meeker's hypothesis indeed finds itself on stable footing.

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An efficient way of synthesizing the deuterium labelled analogues of three methoxypyrazine compounds: 2-d3-methoxy-3-isopropylpyrazine, 2-d3-methoxy-3- isobutylpyrazine, and 2-d3-methoxy-3-secbutylpyrazine, has been developed. To confirm that the deuterium labels had been incorporated into the expected positions in the molecules synthesized, the relevant characterization by NMR, HRMS and GC/MS analysis was conducted. Another part of this work involved quantitative determination of methoxypyrazines in water and wines. Solid-phase extraction (SPE) proved to be a suitable means for the sample separation and concentration prior to GC/MS analysis.Such factors as the presence of ethanol, salt, and acid have been investigated which can influence the recovery by SPE for the pyrazines from the water matrix. Significantly, in this work comparatively simple fractional distillation was attempted to replace the conventional steam distillation for pre-concentrating a sample with a relatively large volume prior to SPE. Finally, a real wine sample spiked with the relevant isotope-labelled methoxypyrazines was quantitatively analyzed, revealing that the wine with 10 beetles per litre contained 138 ppt of 2-methoxy-3-isopropylpyrazine. Interestingly, we have also found that 2-methoxy-3-secbutylpyrazine exhibits an extremely low detection limit in GC/MS analysis compared with the detection limit of the other two methoxypyrazines: 2- methoxy-3-isopropylpyrazine and 2-methoxy-3-isobutylpyrazine.

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Investigations of 2-alkyl-3-methoxypyrazines (2-isopropyl-3-methoxypyra2ine, 2- secbutyl-3-methoxypyrazine and 2-isobutyl-3-niethoxypyrazine) in ladybug species {Coleoptera: Coccinellidae) and wine samples have been conducted. Headspace sampling coupled with gas chromatography-mass spectrometry was used to determine amounts of 2-alkyl-3-methoxypyra2ines in the ladybug species. Hippodamia convergens had the highest amount of alkybnethoxypyrazines, followed by Harmoma axyridis and the least in Coccinella septempunctata. Using a solvent extraction method, the precoccinelline alkaloid was found present in Hippodamia convergens and Coccinella septempunctata but not Harmonia axyridis. Steam distillation followed by a soHd phase extraction method as a sample preparation technique, enhanced detection while the isotope dilution method afforded accurate quantitation of the alkyknethoxypyrazines in the wine samples. Both ladybug-tainted and commercial wine samples were found to contain the 2- alkyl-3-methoxypyrazines. Wine samples prepared in 2001 generally contained higher levels than the corresponding 2003 samples. Levels of the 2-alkyl-3-methoxypyrazines found in the commercial wines ranged from a minimum value of 6 ng/L to 260 ±10 ng/L. Analyses revealed that for both ladybug species and wine samples, the 2- isopropyl-3-methoxypyrazine had the highest concentration, followed by 2-isobutyl- 3-methoxypyrazine and the least being the 2-secbutyl-3-methoxypyrazine. Possible contamination of the wine samples by ladybugs is thoroughly discussed. Furthermore, attempts to remove or reduce the levels of the alkylmethoxypyrazines with molecularly imprinted polymers from wine samples are presented in detail.

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Manpower is a basic resource. It is the indispensable means of converting other resources to mankind '.s use and benefit. As a process· of increasing the knowledge, skills, and dexterity of the people of a society, manpower development is the most fundamental means of enabling a nation to acquire the capacities to bring about its desired future state of affairs -- a more mighty and wealthier nation. Singapore's brief nation-building history justifies the emphasis accorded to the importance of good quality human resources and manpower development in economic and socio-political developments. As a tiny island-state with a poor natural resource base, Singapore's long-term survival and development depend ultimately upon the quality and the creative energy of her people. In line with the nation-building goals and strategies of the Republic, as conditioned by her objective setting, Singapore's basic manpower development premise has been one of "quality and not quantity". While implementing the "stop-at-two" family planning and population control programs and the relevant immigration measures to guard against the prospect of a "population explosion", the Government has energetically fostered various educational programs, including vocational training schemes, adult education programs, the youth movement, and the national service scheme to improve the quality of Singaporeans. There is no denying that some of the manpower development measures taken by the Government have imposed sacrifice and hardship on the Singapore citizens. Nevertheless, they are the basic conditions for the island-Republic's long-term survival and development. It is essential iii to note that Singapore's continuing existence and phenomenal-success are largely attributable to the will, capacities and efforts of her leaders and people. In the final analysis, the wealth and the strength of a nation are based upon its ability to conserve, develop and utilize effectively the innate capacities of its people. This is true not only of Singapore but necessarily of other developing nations. It can be safely presumed that since most developing states' concerns about the quality of their human resources and the progress of their nation-building work are inextricably bound to those about the quantity of their population, the "quality and not quantity" motto of Singapore's manpower development programs can also be their guiding principle.

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To investigate the thennal effects of latent heat in hydrothennal settings, an extension was made to the existing finite-element numerical modelling software, Aquarius. The latent heat algorithm was validated using a series of column models, which analysed the effects of penneability (flow rate), thennal gradient, and position along the two-phase curve (pressure). Increasing the flow rate and pressure increases displacement of the liquid-steam boundary from an initial position detennined without accounting for latent heat while increasing the thennal gradient decreases that displacement. Application to a regional scale model of a caldera-hosted hydrothennal system based on a representative suite of calderas (e.g., Yellowstone, Creede, Valles Grande) led to oscillations in the model solution. Oscillations can be reduced or eliminated by mesh refinement, which requires greater computation effort. Results indicate that latent heat should be accounted for to accurately model phase change conditions in hydrothennal settings.

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Walter D’Arcy Ryan was born in 1870 in Kentville, Nova Scotia. He became the chief of the department of illumination at the General Electric Company of Schenectady, New York. He was a founder in the field of electrical illumination. He built the electric steam scintillator which had numerous nozzles and valves. The operator would release steam through the valves. The nozzles all had names which included: Niagara, fan, snake, plume, column, pinwheel and sunburst. The steam scintillator was combined with projectors, prismatic reflectors, flashers and filters to produce the desired effects. In 1920 a group of businessmen from Niagara Falls, New York formed a group who called themselves the “generators’. They lobbied the American and Canadian governments to improve the illumination of the Falls. They were able to raise $58, 000 for the purchase and installation of 24 arc lights to illuminate the Falls. On February 24th, 1925 the Niagara Falls Illumination Board was formed. Initially, the board had a budget of $28,000 for management, operation and maintenance of the lights. The power was supplied free by the Ontario Power Company. They had 24 lights installed in a row on the Ontario Power Company surge tank which was next to the Refectory in Victoria Park on the Canadian side. The official opening ceremony took place on June 8th, 1925 and included a light parade in Niagara Falls, New York and an international ceremony held in the middle of the Upper Steel Arch Bridge. Walter D’Arcy Ryan was the illuminating engineer and A.D. Dickerson who was his New York field assistant directed the scintillator. with information from American Technological Sublime by David E. Nye and the Niagara Falls info website Location: Brock University Archives Source Information: Subject Headings: Added Entries: 100 Ryan, W. D’A. |q (Walter D’Arcy), |d 1870-1934 610 General Electric Company 650 Lighting, Architectural and decorative 650 Lighting |z New York (State) |z Niagara Falls 700 Dickerson, A.F. 700 Schaffer, J.W. Related material held at other repositories: The Niagara Falls Museum in Niagara Falls, Ontario has a program (pamphlet) dedicating new lighting in 1958 and it has postcards depicting the illumination of the Falls. Some of Ryan’s accomplishments can be seen at The Virtual Museum of the City of San Francisco. Described by: Anne Adams Date: Sept 26,Upper Steel Arch Bridge. Walter D’Arcy Ryan was the illuminating engineer and A.D. Dickerson who was his New York field assistant directed the scintillator. with information from American Technological Sublime by David E. Nye and the Niagara Falls info website

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Volumes of interest were published between 1812 and 1815 with articles about the War of 1812. Issue for July 12, 1813 includes an account of the capture of the Chesapeake, report of explosion of the schooner Eagle off New London, report Com. Hardy had detained a smack, was determined to destroy all smacks and other small craft he found, reports of recent events at Malden, Fort George, head of the Lake, Sacketts Harbour, two reports of attack on Hampton, report of British attack near point of Nansemond River/Craney Island, second report of battle on/near Craney Island, additional report of attack at Hampton, marine news from Baltimore, report that sickness rampant throughout Army, many deaths reported, report that British were fortifying Brownstown, but deserters from British believe Michigan could be retaken by 3000 troops, report Gen. Boyd remained at Fort George to supervise repair of fortifications, report British reinforced from Kingston in Niagara and in Malden, report Gen. Hampton arrived at Albany on way to Burlington, report Gen. Parker left Albany, headed to Burlington, report of 400 men marching from Greenbush to the frontier, report of battles at Stoney Creek, 40 Mile Creek, report that Gen. Boyd lost an action with British in which 8 to 10 hundred men killed and taken from Americans, reports British had captured stores at Black Rock, Sodus, and Oswego, report of British victory in a battle 5 miles from Queenston, troop strength under Dearborn in Niagara reported between 2 and 3 thousand, additional reports of Battle of Beaverdams, reports Dearborn had resumed command, after lengthy illness, Gen. Boyd remained at Fort George, reports natives had been sieging Fort Wayne.

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In the early nineteenth century, a widespread outbreak of cholera occurred in continental Europe, eventually spreading to the British Isles. The disease subsequently spread to Canada as impoverished British immigrants seeking a better life arrived in the country. To help curb the spread of the disease, local Boards of Health were created.

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In the early nineteenth century, a widespread outbreak of cholera occurred in continental Europe, eventually spreading to the British Isles. The disease subsequently spread to Canada as impoverished British immigrants seeking a better life arrived in the country. To help curb the spread of the disease, local Boards of Health were created.

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A paperback "List of Voters for the Town of St. Catharines, 1874" by Journal Steam Print. Richard Woodruff is listed as an owner on St. Paul Street in St. Thomas' Ward (p.8) and Samuel D. Woodruff is also listed as an owner in St. Thomas' Ward (p.8). Richard Woodruff is listed as an owner in St. George's War (p.16). There is an extra front cover included which is badly wrinkled and stained. There is a handwritten list within the back of the book which tallies the number of people in each ward.