915 resultados para cold cracking
Realizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking
Resumo:
Many approaches to mesoporous zeolites have been reported. The preparation of mesoporous zeolite Y, as the most widely used zeolite in catalysis, its properties, and its application in fluid catalytic cracking (FCC) and hydrocracking are reviewed. Finally, the scale-up and use of mesostrutured zeolite Y on an industrial scale are described, as the first commercial application of hierarchical zeolites.
Resumo:
This layer is a georeferenced raster image of the untitled historic paper manuscript map: [Map of the Battle of Cold Harbor, Virginia and vicinity]. Scale not given. Covers a portion of Hanover County, Virginia, showing features in the region surrounding the Cold Harbor Battlefield, Virginia, 1864. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Virginia State Plane South Coordinate System (in Meters) (Fipszone 4502). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, towns and villages, drainage, dwellings with names of inhabitants, troop locations with dates, and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of the Civil War from the Harvard Map Collection. Many items from this selection are from a collection of maps deposited by the Military Order of the Loyal Legion of the United States Commandery of the State of Massachusetts (MOLLUS) in the Harvard Map Collection in 1938. These maps typically portray both natural and manmade features, in particular showing places of military importance. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
Resumo:
Tese de mestrado em Física, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2016
Resumo:
Recent opinion polls suggest that most Icelanders are against joining the EU. By the same token, however, a majority of those polled are in favour of continuing accession talks. These results show that Iceland’s relationship with the EU is a deeply divisive issue within the country. Although no date for the referendum has been set, the new centre-right coalition may thus want to settle this matter as soon as possible. Should there indeed be a majority in support of continuing negotiations, then Iceland’s accession process will become a complicated and cool affair in the hands of an anti-EU membership coalition government.
Resumo:
The end of the Cold War twenty-five years ago brought about a difficult but manageable world in which Russia, the US, and European countries cooperated to manage common problems. There have been difficult times, with the break up of former Yugoslavia, the NATO intervention for Kosovo, and in 2008 when Russia’s intervention in Georgia’s breakaway regions of South Ossetia and Abkahzia nearly led to a head to head with the West. On the whole, the cooperation between old foes which framed the end of the Cold War, resisted these tests. The Helsinki Final Act of 1975 and the agreement not to redraw the map of Europe was never so evidently ignored as today.
Resumo:
Early on the morning of December 13, 1981, General Wojciech Jaruzelski, the leader of the communist Polish United Workers' Party (PZPR), declared martial law, ending the so-called "Polish Crisis," which began with the creation of the Independent Free Trade Union "Solidamosc" in August 1980. Over the next eight years, the Communist government and the opposition struggled over power, culminating in 1989 with the creation of a Solidamosc-led government which ended fifty years of Communist rule in Poland and led the way to further democratic revolutions throughout Eastern Europe. The purpose of this dissertation is to utilize newly available and underutilized archival sources as well as oral history interviews, from both international and American perspectives, to fully chronicle American policy toward Poland from the declaration of martial law until the creation of the Solidarnosc government. Rather than explaining Polish-American relations in bilateral terms, the dissertation illuminates the complex web of influences that determined American policy in Washington and affected its implementation within Poland. This includes descriptions of internal tensions within the Reagan administration, differences between American decisions in Washington and implementation in Warsaw, lobbying from Polish-American groups, clashes between Capitol Hill and the White House, coordination with American labor organizations to support Solidarnosc, disagreements with West European allies in NATO and international financial organizations, cooperation with the Vatican and the Polish Catholic Church, synchronization with American humanitarian organizations working in Poland, limitations caused by the realities of Soviet power in Eastern Europe, and complications caused by domestic Polish concerns. By taking a broad view of American policy and highlighting internal Polish decisions, with both the Communist government and the democratic opposition, the dissertation provides concrete examples of America's role in Poland's transformation, arguing, however, that this role was very limited. These conclusions are relevant to arguments about the end of the Cold War, the nature of American power, as well as current discussions about possibilities to promote democracy within hostile regimes.