F. Kueppers

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Neuronal remodeling with increased sympathetic innervation density has been implicated in the pathogenesis of atrial fibrillation (AF). Recently, increased transcardiac nerve growth factor (NGF) levels were observed in a canine model of AF. Whether atrial myocytes or cardiac sympathetic neurons are the source of neurotrophins, and whether NGF is the main(More)
—Polarization-mode dispersion (PMD) compensation by low-density parity-check (LDPC) coded turbo equalization is experimentally demonstrated for a nonreturn-to-zero (NRZ) system operating at 10 Gb/s. This technique provides significant improvement of bit-error rate compared to the optimum threshold receiver. The channel capacity loss due to PMD and(More)
Alpha-1-antitrypsin-Pittsburgh is a human variant that resulted from a point mutation in the plasma protease inhibitor, alpha 1-antitrypsin (358 Met----Arg). This defect in the alpha 1-antitrypsin molecule causes it to have greatly diminished anti-elastase activity but markedly increased antithrombin activity. In this report, we demonstrate that this(More)
We present a new TDM/WDM PON scheme utilizing PSK (phase shift-keying) at 10 Gbit/s per λ-channel as the modulation format along the feeder line and an SOA (semiconductor optical amplifier) as the amplifying component at the remote node. One single DLI (Delay Line Interferometer) converts all λ-channels from PSK to OOK (on-off keying), the modulation format(More)
Red blood cells (RBC) possess strong antioxidant activity. We tested whether this activity was sufficient to prevent the oxidative inactivation of alpha 1-antitrypsin (alpha 1-AT) by cigarette smoke. We found that RBC in physiological concentrations completely prevented the inactivation of alpha 1-AT. The major erythrocytic antioxidants, catalase,(More)
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