The betaine l,4-dim ethyl-3 ,6-dioxo-l,2 ,4 ,5-tetraz in -l-ium -5(4H )-id (1) im presses by its deep blue colour which is quite unusual for a simple six-membered ring betaine (in dioxane: Amax (log e) = 603 (3.49), 571 (3.50), 227 nm (4.23)) [1], In acidic solu­ tion 1 is p ro tonated ; it dissolves in weak acids, e. g. in H C O O H , with red colour (m onoprotonated form 2; 524 nm (3.56)) and...

Serotyping is one of the typing techniques used to classify strains within the same species. O-serogroup diversification shows a strong association with the genetic diversity of O-antigen biosynthesis genes. In a previous study, based on the O-antigen biosynthesis gene cluster (O-AGC) sequences of 184 known Escherichia coli O serogroups (from O1 to O187), we developed a comprehensive and practi...

Purpose Recent national public health agendas, such as Healthy People 2010, call for improved public health surveillance and health promotion programs for people with disabilities and their caregivers. The goal of this study was to understand the public health impact of caregiving on health-related quality of life (HRQoL) using population-level data. Design & Methods A cross-sectional study des...

molybdenum thin films with 50 and 150 nm thicknesses were deposited on silicon substrates, using dc magnetron sputtering system, then post-annealed at different temperatures (200, 325, 450, 575 and 700°c) with flow oxygen at 200 sccm (standard cubic centimeter per minute). the crystallographic structure of the films was obtained by means of x-ray diffraction (xrd) analysis. an atomic force micr...

A canola tem ganhado destaque no mercado em nível nacional e mundial. É utilizada principalmente como matéria-prima para extração de óleo, sendo destinado à alimentação humana, uso industrial produção biocombustível. O crescimento desta cultura está vinculado qualidade nutricional ao conteúdo óleo seus grãos, além do elevado teor proteico. Há necessidade informação sobre a composição química do...