The composition, environmental fate, and effects of the polybrominated biphenyls (Firemaster BP-6 or FF-1) involved in the accidental contamination of cattle feed in Michigan in 1973 are reviewed. Toxic effects referred to in this report are limited to those occurring in domestic and laboratory animals and include general toxicity, neurobehavioral toxicity, immunotoxicity, reproductive toxicity...

An accurate tool for viral typing is important for management of patients with human papillomavirus (HPV) infection and to monitor HPV vaccine efficacy. This study evaluated the performance of the HPV sign® Genotyping Test by analyzing 87 archival cervical specimens and compared results with historical data by INNO-LiPA HPV Genotyping Extra assay. There was a substantial concordance for HPV det...

aInstituto Federal de Educação, Ciência e Tecnologia do Amazonas – IFAM, Campus Manaus Centro – CMC, Avenida Sete de Setembro, 1975, CEP 69020-120, Manaus, AM, Brazil bInstituto Federal de Educação, Ciência e Tecnologia do Amazonas – IFAM, Campus Coari, Estrada Coari Itapéua, Km 2, s/n, Itamaraty, CEP 69460-000, Coari, AM, Brazil cInstituto Federal de Educação, Ciência e Tecnologia do Amazonas ...

Plasmonic nanostructures with a negative Poisson ratio are demonstrated, having the unusual mechanical property of auxetics to expand laterally when being stretched. Using nanomembrane technology, auxetics are shrunk by orders of magnitude, giving simultaneous access to optical properties of plasmonic metamaterials, as well as auxetic mechanical properties on the nanoscale.

Rapid controlled self-assembly makes DNA ideal for building nanostructures. A problem using hybridized intermediates in hierarchic assembly is their thermodynamic lability. We demonstrate a click-fixation technology by which robust hexagonal DNA modules can be made. This principle is applicable to a wide variety of DNA nanoconstructs.