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  2. List of β-lactam antibiotics - Wikipedia

    en.wikipedia.org/wiki/List_of_β-lactam_antibiotics

    The β-lactam core structures. (A) A penam.(B) A carbapenam.(C) An oxapenam.(D) A penem.(E) A carbapenem.(F) A monobactam.(G) A cephem.(H) A carbacephem.(I) An oxacephem. This is a list of common β-lactam antibiotics—both administered drugs and those not in clinical use—organized by structural class.

  3. Clef - Wikipedia

    en.wikipedia.org/wiki/Clef

    The only F-clef still in use is the bass clef, with the clef placed on the fourth line. Since it is the only F-clef commonly encountered, the terms "F-clef" and "bass clef" are often regarded as synonymous. Bass clef is used for the cello, double bass and bass guitar, bassoon and contrabassoon, bass recorder, trombone, tuba, and timpani.

  4. β-Lactam antibiotic - Wikipedia

    en.wikipedia.org/wiki/Β-Lactam_antibiotic

    β-Lactam antibiotics are indicated for the prevention and treatment of bacterial infections caused by susceptible organisms. At first, β-lactam antibiotics were mainly active only against gram-positive bacteria, yet the recent development of broad-spectrum β-lactam antibiotics active against various gram-negative organisms has increased their usefulness.

  5. List of musical symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_symbols

    Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...

  6. β-Lactam - Wikipedia

    en.wikipedia.org/wiki/Β-Lactam

    A lactam is a cyclic amide, and beta-lactams are named so because the nitrogen atom is attached to the β-carbon atom relative to the carbonyl. The simplest β-lactam possible is 2-azetidinone. β-lactams are significant structural units of medicines as manifested in many β-lactam antibiotics. [2]

  7. Manuscript paper - Wikipedia

    en.wikipedia.org/wiki/Manuscript_paper

    Manuscript paper (sometimes staff paper in U.S. English, or just music paper) is paper preprinted with staves ready for musical notation. [1] A manuscript is made up of lines and spaces, and these lines and space have their names depending on the staves (bass or treble). Manuscript paper is also available for drum notation and guitar tabulature ...

  8. Luke Bryan Explains His 'Red' Eyes, Denies He Smokes Pot - AOL

    www.aol.com/entertainment/luke-bryan-explains...

    Luke Bryan wants fans to know that his red eyes are not from smoking marijuana — but from catching fish. The country singer, 47, opened up about his bass allergy on Tuesday, April 16, telling ...

  9. Percussion notation - Wikipedia

    en.wikipedia.org/wiki/Percussion_notation

    Non-pitched percussion notation on a conventional staff once commonly employed the bass clef, but the neutral clef (or "percussion clef"), consisting of two parallel vertical lines, is usually preferred now. It is usual to label each instrument and technique the first time it is introduced, or to add an explanatory footnote, to clarify this.