168 No início de 2009, uma epidemia causada por um novo vírus da influenza A da gripe suína (H1N1) foi detectada no México.1 Casos subsequentes foram detectados em todo o mundo e, em junho de 2009, a Organização Mundial da Saúde considerou a ocorrência uma pandemia em nível máximo de alerta. Neste ano, mais de 17.000 mortes relacionadas a esta infecção foram descritas.1,2 No Brasil, no período ...

In this issue of the Journal, Toyota et al5 report that a staged PCI strategy for angiographically significant nonculprit lesions arly reperfusion of the occluded infarct-related artery (IRA) using primary percutaneous coronary intervention (PCI) has been the primary goal of treatment for patients with acute ST-segment elevation myocardial infarction (STEMI).1 Concomitant atherosclerosis in cor...

In the present work, the effect of bed expansion on BSA adsorption on Amberlite IRA 410 ion-exchange resin was studied. The hydrodynamic behavior of an expanded bed adsorption column on effects of the biomolecules and salt addition and temperature were studied to optimize the conditions for BSA recovery on ion-exchange resin. Residence time distribution showed that HEPT, axial dispersion and th...

We define here a new symmetry operator called reciprocation. Apertures that remain unchanged afler reciprocation are called self-reciprocal, and have a number of unique properties. When excited suddenly by a voltage, a self-reciprocal aperture becomes an antenna. This antenna is an approximation to a TEM horn, to a lens IRA (TEM feed + lens), or to a reflector IRA (TEM feed + reflector). Becaus...

Irregular repeat-accumulate Root-Check LDPC codes based on Progressive Edge Growth (PEG) techniques for block-fading channels are proposed. The proposed Root-Check LDPC codes are both suitable for channels under F = 2, 3 independent fadings per codeword and for fast fading channels. An IRA(A) Root-Check structure is devised for F = 2, 3 independent fadings. The performance of the new codes is i...

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The removal of dissolved organic carbon (DOC) is a key factor in the control disinfection by-product (DBP) formation drinking water. Ion exchange process deals with naturally negatively charged matter. A fluidized bed column test has been chosen to parallel efficiency 4 different anionic resins (Purolite PPA860S, Dowex TAN-1, Amberlite IRA-958 and IRA-410) terms DOC fraction related DBP reducti...