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There are excellent guidelines for clinicians to manage venous diseases but few reviews to assess their hemodynamic background. Hemodynamic concepts that evolved in the past have largely remained unchallenged in recent decades, perhaps due to their often complicated nature and in part due to emergence of new diagnostic techniques. Duplex ultrasound scanning(More)
This work presents the performance of a 24-GHz transceiver for automotive short-range radar. Complying with the pulsed radar sensor requirements, this single-chip is the first silicon realization with this high-level of integration. The single-chip results were obtained at 24 GHz using a standard 0.13 mum BiCMOS SiGe 170 GHz f<sub>T</sub> featuring 1.7 V(More)
Governmental Transportation Authorities' interest in Car to Car and Car to Infrastructure has grown dramatically over the last few years in order to increase the road safety and reduce traffic emission. The achievement of these objectives is subject to development of three aspects: Transmission, Localization and Sensor Networks. New wireless technique(More)
BACKGROUND Venous disease presents an extremely complex problem with various clinical manifestations. This is an epidemiological study of venous disease as it occurs in an area of Brazil. For the first time in Brazil the CEAP classification is used. METHODS A total of 2104 people, were randomly recruited at the registration desks of the General Policlinic(More)
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