937 resultados para dry gel
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Aluminosilicate catalysts containing supported ZnCl2 and metal fluoride salts have been prepared using a sol-gel based route, tested and characterized. The activities of these ZnCl2 + metal fluoride catalysts, while greater than "Clayzic" (ZnCI2 supported on montmorillonite KIO) are not as good as supported ZnCl2 only supported on aluminosilicate. Alumina supports have also been prepared via a sol-gel route using various chemical additives to generate a mesoporous structure, loaded with ZnCl2 and tested for activity. The activities for these alumina-supported catalysts are also significantly higher than that of "Clayzic", an effective Friedel-Crafts catalyst. Characterizations of these two types of catalysts were done by magic angle spinning (MAS) NMR, diffuse reflectance infrared (DRIFT) spectroscopy and additionally for the alumina nitrogen adsorption studies were done. Supported aluminum trichloride was also investigated as an alternative to the traditional use of aluminum trichloride.
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This archive contains materials relating to the Port Weller Dry Docks Limited. The bulk of the materials are correspondence. The collection also includes biographical information, photographs and media releases. The materials have been kept in original order, except where noted. The fonds contains materials relating to Port Weller Dry Docks Limited. The materials included correspondence, photographs, media releases including clippings, photographs and some biographical information. Also included are brochures and programs from ship christenings.
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Port Weller Dry Docks Limited was officially established on April 25, 1946, near Lock 1 of the Welland Canal. Charles A. Ansell was the company’s first President and General Manager. Initially, the company focused on repairing ships, but in June, 1951, built their first ship, the Scott Misener. In 1956, the Upper Lakes and St. Lawrence Transportation Co. purchased all of the shares of Port Weller Dry Docks Limited. In the mid-eighties, ULS (Upper Lakes Shipping) International (which owned the Port Weller dry docks), and Canada Steamship Lines, merged their operations. As a result, the Port Weller Dry Docks became a division of this newly formed company, known as Canadian Shipbuilding and Engineering Limited. In 2007, Seaway Marine & Industrial Inc. took over ownership of the Port Weller Dry Docks, but declared bankruptcy in July 2013.
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Letter with the letterhead “John I. Mackenzie and Co. Importers of Dry Goods” to S.D. Woodruff from John I. Mackenzie stating that he omitted to consult with Mr. Woodruff regarding funds to pay some of the contractors (2 pages, handwritten), July 8, 1875.
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Receipt from McLaren and Co., St. Catharines, Importers of Dry Goods, Millinery etc., for clothing and repairs to clothing, Aug. 14, 1886.
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Receipt from Adam, Meldrum and Anderson Dry Goods and Carpets, Buffalo, New York for curtains, materials and hooks, Sept. 6, 1886.
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Receipt from Henry Carlisle, Importer of Dry Goods and Millinery, St. Catharines for hats, Dec. 31, 1886.
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Receipt from The Big 22, Dry Goods, Millinery and Mantles, St. Catharines for payment on account, Jan26, 1887.
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Tesis (Maestría en Ciencias, con especialidad en Química Analítica) U.A.N.L.
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Tesis (Maestría en Ciencias con Especialidad en Ingeniería Cerámica) U.A.N.L.
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Tesis (Maestría en Ciencias con Especialidad en Ingeniería Cerámica) U.A.N.L.
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[Tesis] ( Maestría en Ciencias con Orientación a Ingeniería Cerámica ) U.A.N.L.
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Tesis (Maestría en Ciencias de la Ingeniería Mecánica con Especialidad en Materiales) UANL, 2010.
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Tesis (Maestría en Ciencias de la Ingeniería Mecánica con Orientación en Procesos Sustentables) UANL, 2012.
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Tesis (Maestría en Ciencias con Orientación en Farmacia) UANL, 2011.