The viral haemorrhagic fevers (VHF) are a growing public health threat in the Eastern Mediterranean Region. Nearly all of them are of zoonotic origin. VHF often cause outbreaks with high fatalities and, except for yellow fever, currently there are no specific treatment or vaccination options available. In response to this growing threat, the Regional Office for the Eastern Mediterranean of the ...

Technical investigations suggest that DRM+ is a suitable candidate for the transition from analogue FM to digital broadcasting in VHF band II (87.5 108.0 MHz) in Europe [2]. Unfortunately, there are mainly three major problems to solve: 1. VHF band II is historically defined for the use of analogue FM sound broadcasting, and, it is – as such – extensively used in Europe; 2. the lack of agreed c...

U radu je provedena analiza postojećeg širokopojasnog i alternativnog uskopojasnog komunikacijskog sustava pomorskih VHF radiotelefonskih komunikacija, zasnovanih na simulacijskom modelu. Alternativni sustav predložen je od strane ITU organizacije kao jedno od mogućih rješenja problema nedostatka komunikacijskih kanala u pomorskom VHF području. Pomoću računalnih simulacijskih modela ispitan je ...

The method of superposing the standing waves is the idea to generate VHF excited plasmas with excellent uniformity for large area processing. To get such plasmas, we generate two standing waves on the electrode, control the places of their own antinodes, and then, we superpose them. By using this method, VHF pure hydrogen plasmas are produced for various conditions. According to the photographs...

This article deals with OFDM transmission associated with turbo codes, in order to realize a software radio modem with several waveforms. Except for the frequency transposition, we show that all the functions can be implemented as software. This modem is adapted for HF, VHF and UHF transmission, depending on the chosen waveform. Simulations and tests in real condition achieve a bit error rate o...

Background and Objectives: In this paper, a new design strategy was proposed in order to enhance bandwidth and efficiency of power amplifier. Methods: To realize the introduced design strategy, a power amplifier was designed using TSMC CMOS 0.18um technology for operating in the Ka band, i.e. the frequency range of 26.5-40GHz. To design the power amplifier, first a power divider (PD) with a ver...

Traditional neuropsychology employs visual half-field (VHF) experiments to assess cerebral language dominance. This approach is based on the assumption that left cerebral dominance for language leads to faster and more accurate recognition of words in the right visual half-field (RVF) than in the left visual half-field (LVF) during tachistoscopic presentation. Information in the RVF is directly...

Abst ract:-The South African Sythetic Aperture Radar System (SASAR) was conceived of as a fully polarimetric, multifrequency, airborne SAR. System design work was carried out at the Radar Remote Sensing Group of the Department of Electrical Engineering, University of Cape Town, starting in 1993. Construction of flight hardware was contracted out to Industry and on board integration was given to...

The best established lateralized cerebral function is speech production, with the majority of the population having left hemisphere dominance. An important question is how to best assess the laterality of this function. Neuroimaging techniques such as functional Magnetic Resonance Imaging (fMRI) are increasingly used in clinical settings to replace the invasive Wada-test. We evaluated the usefu...

OBJECTIVE To assess the level of knowledge regarding viral hemorrhagic fever (VHF) among healthcare personnel at two largest tertiary care hospitals in Karachi, Pakistan. METHODS A cross sectional convenience survey was conducted in February 2001 among doctors, nurses, laboratory technicians and janitors/orderlies of Jinnah Postgraduate Medical Centre and Civil Hospital, Karachi. The question...