We present model calculations to the observed spectral variability in the γ-ray spectrum of the ultraluminous blazar-type quasar PKS 0528+134. We argue that the observed appearance of a spectral break between the COMPTEL and the EGRET energy range can plausibly be explained by a variation of the Doppler beaming factor in the framework of a relativistic jet model for AGNs, combining the ERC and ...

AIM To investigate bone mineral status in patients with cystic fibrosis (CF). PATIENTS AND METHODS Whole body bone mineral content (BMC), projected bone area, and bone mineral density (BMD) were determined by dual energy x ray absorptiometry in 134 patients with CF and compared with 396 healthy controls. RESULTS In patients </= 19 years of age, BMD for age was normal in boys and marginally ...

OBJECT There are frequent applications for endoscopy in neurosurgery. However, endoscopic surgery in children has peculiar characteristics and is associated with different rates of success. In this study, the authors report on their experience with 134 consecutive endoscopy procedures performed in 126 patients<18 years of age. METHODS Between April 1993 and October 2007, 134 endoscopic proced...

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Culture, Practice & Europeanization , Seite 112 - 134