The Cygnus Loop is one of the largest and nearest supernova remnants. It was observed by the PSPC detector of the Röntgen-Satellite ROSAT during the survey phase of the ROSAT mission. This has resulted in the highest–sensitivity complete x-ray image of the Cygnus Loop. It also has the high spatial resolution of one arcmin and contains spectral information. It is thus the best map of the Cygnus ...

A study of rational maps of the real or complex projective plane of degree two or more, concentrating on those which map a genus one curve onto itself, necessarily by an expanding map. We describe relatively simple examples with a rich variety of interesting dynamical behaviors which are perhaps familiar to the applied dynamics community but not to specialists in several complex variables. For ...

A 40-year-old woman with no history of trauma or prior surgery presented to the emergency department with headache and left eye pain after nose blowing. Noncontrast maxillofacial computed tomography examination revealed an orbital floor fracture that ultimately required surgical repair. There are nontraumatic causes of orbital blowout fractures, and imaging should be obtained irrespective of tr...

In response to the urgent need for estimates of the oil and gas flow rate from the Macondo well MC252-1 blowout, we assembled a small team and carried out oil and gas flow simulations using the TOUGH2 codes over two weeks in mid-2010. The conceptual model included the oil reservoir and the well with a top boundary condition located at the bottom of the blowout preventer. We developed a fluid pr...