86,682 research outputs found

    Fracking in Pennsylvania: A Spatial Analysis of Impacts on Land Cover and Land Use, the Viewshed, and the Audioshed

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    Hydraulic fracturing is the process of extracting natural gas from layers of shale rock beneath the surface of the Earth. The largest source of natural gas in the US is the Marcellus Shale, largely located in Pennsylvania, and it is believed to hold about 141 trillion cubic feet of natural gas in its shale deposits. My study examined the impacts of well sites on land cover and land use, the viewshed, and the audioshed. To study the effect of wellpads on land use and land cover, we overlaid a layer of wellpads over land cover data as well as a layer of Pennsylvania natural resources. To study the visual and sound impacts of wellpads and compressor stations, we generated viewsheds and audiosheds and then calculated the percent of land, road, and trails impacted within different environment types. We found that the majority of producing wells are currently found in forested areas and within 1320 feet of a stream or wetland. However, we found that there is also seemingly a bias against placing wellpads near wetland areas. Additionally, rural land cover areas were found to have a disproportionate number of wellpads in relation to their area within the Marcellus shale region. Rural environments were also found to be impacted the highest in regards to the viewshed, having over 20% of the tile within the fracking viewshed for tiles with at least 2 wellpads. In regards to noise impacts, high road density areas and state forest areas were found to have similar percentages within the audioshed for tiles with at least one compressor station. So overall, in areas with at least 2 wellpads, rural areas have the most potential impacts due to fracking for both land cover and land use as well as the viewshed

    Reliance Remedies at the International Centre for the Settlement of Investment Disputes

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    Examines situations in which the International Centre for the Settlement of Investment Disputes has awarded damages for the cost of the investment, which may be compared to the contract law concept of reliance damages. Notes that this measure of damages is often used where lost profits are difficult to calculate because of the speculative nature of the future investment

    Cruise Report 70-S-5: Big Game Fish

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    ā€œA Considerable Surgical Operationā€: Article III, Equity, and Judge-Made Law in the Federal Courts

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    This Article examines the history of judge-made law in the federal courts through the lens of the early-nineteenth-century federal courtsā€™ equity powers. In a series of equity cases, and in the Federal Equity Rules promulgated by the Court in 1822 and 1842, the Supreme Court vehemently insisted that lower federal courts employ a uniform corpus of nonstate equity principles with respect to procedure, remedies, and - in certain instances - primary rights and liabilities. Careful attention to the historical sources suggests that the uniform equity doctrine was not simply the product of an overreaching, consolidationist Supreme Court, but is best understood in the context of important and surprisingly underappreciated early-nineteenth-century debates concerning judicial reform. During this period, both Congress and the Court were preoccupied with the disuniformity in the administration of the federal judicial system, especially in the farther reaches of the republic. When reform was not forthcoming through legislation, the Supreme Court achieved a modicum of uniformity in the federal courts through the application of a single body of equity principles drawn from federal and English sources. But the Court did not act unilaterally. Congressā€™s repeated acquiescence to, and extension of, the Courtā€™s uniform equity doctrine reveals a complex, interbranch dynamic at work. Retelling the story of nonstate, judge-made law in the federal courts through the lens of equity is not intended to demonstrate that such a formulation of federal judicial power was (or is) correct. Rather, by recuperating the history of federal equity power, this Article illuminates the significant metamorphosis of the meaning of Article IIIā€™s grant of judicial power. This change has been elided in modern accounts of federal judge-made law in an effort to bolster the legitimacy of a modern vision of federal judicial power

    Molecular potential energy surfaces constructed from interpolation of systematic fragment surfaces

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    A systematic method for approximating the ab initio electronic energy of molecules from the energies of molecular fragments has previously been presented. Here it is shown that this approach provides a feasible, systematic method for constructing a global molecular potential energy surface (PES) for reactions of a moderate-sized molecule from the corresponding surfaces for small molecular fragments. The method is demonstrated by construction of PESs for the reactions of a hydrogen atom with propane and n-pentane
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