Do trills always go up?

Do trills always go up? Trills provide the flutes and other woodwinds the opportunity to add brilliance and excitement to a score. Forgive me for stating the obvious, but a trill is a rapid alternation between adjacent pitches, up either a half step or whole step from the notated pitch Read more…

How does PBP2a work?

How does PBP2a work? PBP2a is a unique transpeptidase that is not inhibited well by β-lactam antibiotics. Hence, it is able to continue peptidoglycan crosslinking in the face of the challenge by these antibiotics, when other PBPs with transpeptidase activity are inhibited. Crosslinking of peptidoglycan strands in cell-wall synthesis. Does Read more…

What is Citadel securities known for?

What is Citadel securities known for? Citadel Securities was formed in 2001, and is a market maker, providing liquidity and trade execution to retail and institutional clients. Citadel Securities automation has resulted in more reliable trading at lower costs and with tighter spreads. Are Citadel Securities prestigious? NEW YORK–(BUSINESS WIRE)–Citadel Read more…