We report a dichorionic twin gestation with diffuse placental mesenchymal dysplasia (PMD) and androgenetic biparental mosaicism (ABM) involving one twin's placenta with complete absence of fetal development for that twin. To our knowledge, this is the 1st reported case of PMD without fetal development. We discuss the gross, histologic, and genetic hallmarks of PMD and the spectrum of variabilit...

We propose and experimentally demonstrate a chromatic dispersion (CD)-insensitive first-order polarization mode dispersion (PMD) monitoring method based on radio-frequency (RF) power measurement. In high-speed (>10-GSym/s) transmission systems, a narrowband fiber Bragg grating (FBG) notch filter filters out the optical components at 10GHz away from the carrier. After square-law detection, the 1...

A short recirculating fiber loop (-100 km) that can emulate PMD with Maxwellianstatistics is realized by loop-synchronous polarization scrambling inside the loop. Theperformance of our distribution-correct PMD loop is compared both experimentally andnumerically to that of a distribution-incorrect PMD loop.©2000 Optical Society of AmericaOCIS codes: (060.2330) Fiber optics co...

TGF-β plays a critical role in normal mammary development and morphogenesis. Decreased TGF-β signaling has been associated with increased mammographic density. Percent mammographic density (PMD) adjusted for age and body mass index (BMI) is a strong risk factor and predictor of breast cancer risk. PMD is highly heritable, but few genetic determinants have been identified. We investigated the as...

Two object-oriented programming language paradigms— dynamic, prototype-based languages and multi-method languages— provide orthogonal benefits to software engineers. These two paradigms appear to be in conflict, however, preventing engineers from realizing the benefits of both technologies in one system. This paper introduces a novel object model, prototypes with multiple dispatch (PMD), which ...

Dieser Beitrag beschäftigt sich mit dem Aufbau eines Mehrkamerasystems bestehend aus 3D-PMD Kameras zur Überwachung eines Operationssaals in der roboterunterstützten Chirurgie. Der Einsatz mehrerer PMD-Kameras ermöglicht eine schnelle und robuste Positionserkennung aller sich im Raum befindlichen Personen sowie die Erkennung des Robotersystems. Auf diese Weise ist es möglich Sicherheitskonzepte...

BACKGROUND AND PURPOSE Patients with acute ischemic stroke and intracranial arterial obstructions have a poor prognosis and a high probability of deteriorating at 24 hours. We aimed to evaluate the diagnostic accuracy of power motion mode Doppler (PMD-TCD) compared with CT angiography as standard in diagnosing intracranial arterial obstructions in patients presenting with ischemic stroke of <24...

We examined neuronal activity in the dorsal and ventral premotor cortex (PMd and PMv, respectively) to explore the role of each motor area in processing visual signals for action planning. We recorded neuronal activity while monkeys performed a behavioral task during which two visual instruction cues were given successively with an intervening delay. One cue instructed the location of the targe...