C. Alexandre

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BACKGROUND The Drosophila segment polarity gene hedgehog encodes a member of a family of secreted proteins that are involved in a variety of patterning processes, in both vertebrates and invertebrates. Some of these processes depend upon short-range or contact-dependent interactions, whereas others seem to involve long-range signalling. Two different models(More)
Quantitative histology of bone changes, using undecalcified transiliac bone biopsies (UTBB), was performed blindly in 46 individuals with monoclonal gammopathy (MG), including 17 with MG of undetermined significance (MGUS) and 29 with overt multiple myeloma (MM). Three MGUS presented an excess of osteoclastic resorption (OR) in the vicinity of clusters of(More)
Cooperative diversity and orthogonal frequency division multiplex-ing (OFDM) are two key technologies for future wireless communication systems. One of the main problems of OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitted signals , which may cause the introduction of intercarrier interference due to the presence of nonlinear(More)
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