HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

settling rates of bacteria through the air. J. Bacteriol., 42, 321-344. ROSEBURY, T. 1947 Experimental airborne infection. In Microbiological Monographs. The Williams & Wilkins Co., Baltimore, Maryland. SHIPE, E. L., TYLER, M. E., AND CHAPMAN, D. M. 1959 Bacterial aerosol samplers. II. Development and evaluation of the Shipe sampler. Appl. Microbiol., 7, 349-354. SPENDLOVE, J. C. 1957 Productio...

settling rates of bacteria through the air. J. Bacteriol., 42, 321-344. ROSEBURY, T. 1947 Experimental airborne infection. In Microbiological Monographs. The Williams & Wilkins Co., Baltimore, Maryland. SHIPE, E. L., TYLER, M. E., AND CHAPMAN, D. M. 1959 Bacterial aerosol samplers. II. Development and evaluation of the Shipe sampler. Appl. Microbiol., 7, 349-354. SPENDLOVE, J. C. 1957 Productio...

Variability of the spectral energy distribution (SED) of active galactic nuclei (AGNs) can provide clues for understanding both the main emission processes and the origin of their variations. So far, multi-wavelength monitoring has been possible for a limited number of bright objects, thanks to large international cooperations (see Ulrich, Maraschi, & Urry 1997, and refs. therein). The “ensembl...

1Department of Electrical Engineering, Federal University of Rio Grande do Sul, 90035-190 Porto Alegre, RS, Brazil 2Dipartimento di Elettronica, Informazione e Bioingegneria (DEIB), Politecnico di Milano, 20133 Milano, Italy 3National Research Council of Italy (C.N.R.), Institute of Electronics, Computer and Telecommunication Engineering (IEIIT), 20133 Milano, Italy 4Department of Automation Sy...