A method for the determination of lactic acid concentration in blood by gas chromatography is described. Lactic acid in a protein-free filtrate is oxidized by ceric sulfate to acetaldehyde. The latter compound is introduced into the gas chromatographic column by vapor phase injection, and is quantitatively measured within 3 mm. The method is specific, precise, and not affected by compounds that...

Use of amine solutions for the removal of acid gases such as carbon dioxide (CO2) and hydrogen sulfide (H2S) from natural gas is the most common method, and, in this process, operational problems because of foaming are reported. Foaming can lead to the entrainment of liquid into downstream process equipment and might result in a situation in which the process specification...

UNLABELLED Group A streptococcus (GAS) causes human pharyngitis and invasive infections and frequently colonizes individuals asymptomatically. Many lines of evidence generated over decades have shown that the hyaluronic acid capsule is a major virulence factor contributing to these infections. While conducting a whole-genome analysis of the in vivo molecular genetic changes that occur in GAS du...