Tris

Tris or Tris(hydroxymethyl)aminomethane or THAM is an organic compound with the formula (HOCH₂)₃CNH₂. Tris is extensively used in biochemistry and molecular biology. In biochemistry, Tris is widely used as a component of buffer solutions, such as in TAE and TBE buffer, especially for solutions of nucleic acids. It contains a primary amine and thus undergoes the reactions associated with typical amines, e.g. condensations with aldehydes.

Buffering features

Tris has a pK_a of 8.07 at 25 °C, which implies that the buffer has an effective pH range between 7.5 and 9.0.

Buffer details

Tris (disambiguation)

Tris may refer to:

Tri

Tri or TRI may refer to:

Grammy Award

A Grammy Award (originally called Gramophone Award), or Grammy, is an accolade by the National Academy of Recording Arts and Sciences (NARAS) of the United States to recognize outstanding achievement in the music industry. The annual presentation ceremony features performances by prominent artists, and the presentation of those awards that have a more popular interest. It shares recognition of the music industry as that of the other performance arts: Emmy Awards (television), the Tony Awards (stage performance), and the Academy Awards (motion pictures).

The first Grammy Awards ceremony was held on May 4, 1959, to honor the musical accomplishments by performers for the year 1958. Following the 2011 ceremony, NARAS overhauled many Grammy Award categories for 2012. The 57th Grammy Awards was held on February 8, 2015, at the Staples Center in Los Angeles.

History

The Grammys had their origin in the Hollywood Walk of Fame project in the 1950s. As the recording executives chosen for the Walk of Fame committee worked at compiling a list of important recording industry people who might qualify for a Walk of Fame star, they realized there were many more people who were leaders in their business who would never earn a star on Hollywood Boulevard. The music executives decided to rectify this by creating an award given by their industry similar to the Oscars and the Emmys. This was the beginning of the National Academy of Recording Arts and Sciences. After it was decided to create such an award, there was still a question of what to call it; one working title was the Eddie, to honor the inventor of the phonograph, Thomas Edison. They finally settled on using the name of the invention of Emile Berliner, the gramophone, for the awards, which were first given for the year 1958.