Small-Size Eight-Element MIMO Metamaterial Antenna with High Isolation Using Modal Significance Method.

This article presents a symmetrical reduced-size eight-element MIMO antenna array with high electromagnetic isolation among radiators. The array utilizes easy-to-build techniques to cover the n77 and n78 new radio (NR) bands. It is based on an octagonal double-negative metamaterial split-ring resonator (SRR), which enables a size reduction of over 50% for the radiators compared to a conventional disc monopole antenna by increasing the slow-wave factor.

Trivalent inactivated influenza virus vaccine given to two-month-old children: an off-season pilot study.

Background: Although children less than 6 months of age have the highest risk for hospitalization related to influenza infection, influenza vaccine is not approved for these children.

Methods: In an open-label, off-season study, healthy 6 to 12 week and 6-month-old children received 2 doses of the 2004 to 2005 trivalent inactivated influenza vaccine (TIV) administered 1 month apart along with other routine pediatric vaccines. Safety was assessed by parental diaries (n = 393).

Safety and immunogenicity of trivalent inactivated influenza vaccine in infants: a randomized double-blind placebo-controlled study.

Background: Infants less than 6 months of age are at high risk for influenza disease and influenza-related complications, but no vaccine is licensed for this population.

Methods: A double-blind, randomized, placebo-controlled trial was conducted in 1375 healthy US infants 6 to 12 weeks of age. Subjects received 2 doses of trivalent inactivated influenza vaccine (TIV, Fluzone, sanofi pasteur; N = 915) or placebo (N = 460) 1 month apart in combination with indicated concomitant vaccines.

β-Lactamases in the biochemistry and molecular biology laboratory.

β-lactamases are hydrolytic enzymes that inactivate the β-lactam ring of antibiotics such as penicillins and cephalosporins. The major diversity of studies carried out until now have mainly focused on the characterization of β-lactamases recovered among clinical isolates of Gram-positive staphylococci and Gram-negative enterobacteria, amongst others. However, only some studies refer to the detection and development of β-lactamases carriers in healthy humans, sick animals, or even in strains isolated from environmental stocks such as food, water, or soils.