منابع مشابه
Deep drilling moves ahead
Deep-water drilling in the Gulf of Mexico could resume within weeks under a policy by the US government, which has come under increasing criticism from the oil industry and politicians in the region over the impact of the drilling halt and worries from scientists that the full impact has not yet been assessed. Oil and gas exploration in the gulf’s deep waters has been stopped since May, when Ob...
متن کامل…while Melbourne moves ahead
UK higher education institutes are lobbying to get the commission to accept the idea of credits based on learning outcomes rather than length of study. But within the UK, Scottish and Welsh universities are already implementing credit systems compatible with the European Commission's system. The Bologna process objectives enthuse many people. George Winckler, president of the European Universit...
متن کاملWho Starts Ahead and Who Moves Ahead? Achievement, Social Adjustment and their Production in Children
A great deal of T. Paul Schultz’s professional career was spent looking at the forces behind economic development. As Adam Smith pointed out, the wealth of nations is in their inhabitants, making the development of children central to economic development and progress. Schultz made the case several times that there is a payoff to educating women in less developed countries. Many of the “gateway...
متن کاملFeasibility of Supercritical Carbon Dioxide as a Drilling Fluid for Deep Underbalanced Drilling Operations
Feasibility of drilling with supercritical carbon dioxide to serve the needs of deep underbalanced drilling operations has been analyzed. A case study involving underbalanced drilling to access a depleted gas reservoir is used to illustrate the need for such a research. For this well, nitrogen was initially considered as the drilling fluid. Dry nitrogen, due to its low density, was unable to ge...
متن کاملDeep drilling into the Chesapeake Bay impact structure.
Samples from a 1.76-kilometer-deep corehole drilled near the center of the late Eocene Chesapeake Bay impact structure (Virginia, USA) reveal its geologic, hydrologic, and biologic history. We conducted stratigraphic and petrologic analyses of the cores to elucidate the timing and results of impact-melt creation and distribution, transient-cavity collapse, and ocean-water resurge. Comparison of...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2011
ISSN: 0960-9822
DOI: 10.1016/j.cub.2011.01.020