Stopping Our Coal Leaks
نویسندگان
چکیده
منابع مشابه
[Management of cerebrospinal fluid leaks according to size. Our experience].
OBJECTIVE We present our experience in the reconstruction of cerebrospinal fluid (CSF) leaks according to their size and location. MATERIAL AND METHODS Fifty-four patients who underwent advanced skull base surgery (large defects) and 62 patients with CSF leaks of different origin (small and medium-sized defects) were included. Large defects were reconstructed with a nasoseptal pedicled flap p...
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Natural gas is the largest source of anthropogenic emissions of methane (CH(4)) in the United States. To assess pipeline emissions across a major city, we mapped CH(4) leaks across all 785 road miles in the city of Boston using a cavity-ring-down mobile CH(4) analyzer. We identified 3356 CH(4) leaks with concentrations exceeding up to 15 times the global background level. Separately, we measure...
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Given a random time, we give some characterizations of the set of martingales for which the stopping theorems still hold. We also investigate how the stopping theorems are modified when we consider arbitrary random times. To this end, we introduce some families of martingales with remarkable properties. DOI: https://doi.org/10.1016/j.spa.2006.06.005 Posted at the Zurich Open Repository and Arch...
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OBJECTIVE: Esophageal anastomotic leaks are associated with significant morbidity and mortality. The purpose of this study was to retrospectively assess the role of the anastomotic positioning (thoracic or cervical) on the incindence of the anastomotic leak and its severity. METHODS: In the period 2002-07, we have performed extended esophagectomy with a curative-intent in 63 patients with esoph...
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There are presently wide disagreements among experts concerning the future availability and price of petroleum and natural gas both domestically and worldwide. If these resources are to be available to future generations at affordable prices, then the technological challenge is to use these resources in ways that offer the greatest economic benefit and the minimum environmental damage. Petroleu...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1921
ISSN: 0036-8733
DOI: 10.1038/scientificamerican04231921-325a