Amoeba Music

Amoeba Music is an independent music chain with stores in Berkeley, San Francisco, and Hollywood, Los Angeles, California. Founded by former employees of nearby Rasputin Records, it opened on Telegraph Avenue in Berkeley in 1990. The stores are unusually large given their independent status. The San Francisco store, which opened in 1997 in the Haight-Ashbury district, is especially notable for its size. Occupying a 24,000 square foot (2,200 m²) former bowling alley, the store regularly stocks upwards of 100,000 CDs, vinyl records, and audio cassettes, both new and used.

The Southern California location was added on November 17, 2001 when the store opened a new branch on Sunset Boulevard (at Cahuenga Boulevard) in Hollywood. (See article.) At the time of its opening, the store planned to stock as many as 250,000 titles, which would place the store among the largest independent music stores in the world. According to Los Angeles Times writer Michael Hiltzik, the location "instantly became a Hollywood landmark."

Vinyl

In chemistry, vinyl or ethenyl is the functional group −CH=CH₂, namely the ethylene molecule (H₂C=CH₂) minus one hydrogen atom. The name is also used for any compound containing that group, namely R−CH=CH₂ where R is any other group of atoms.

An industrially important example is vinyl chloride, precursor to PVC, a plastic commonly known as vinyl.

Vinyl is one of the alkenyl functional groups. On a carbon skeleton, sp²-hybridized carbons or positions are often called vinylic. Allyls, acrylates and styrenics contain vinyl groups. (A styrenic crosslinker with two vinyl groups is called divinyl benzene.)

Etymology

The etymology of vinyl is the Latin vinum = "wine", because of its relationship with alcohol (in its original sense of ethyl alcohol). The term "vinyl" was coined by the German chemist Hermann Kolbe in 1851.

Vinyl polymers

Vinyl groups can polymerize with the aid of a radical initiator or a catalyst, forming vinyl polymers. In these polymers, the double bonds of the vinyl monomers turn into single bonds and the different monomers are joined by single bonds. Vinyl groups do not exist in vinyl polymer; the term refers to the precursor. It is sometimes important to ascertain the absence of unreacted vinyl monomer in the final product when the monomer is toxic or reduces the performance of the plastic. The following table gives some examples of vinyl polymers.

Record Store Day

Record Store Day is an annual event, founded in 2007, held on the third Saturday of April each year to celebrate the culture of the independently owned record store. The day brings together fans, artists, and thousands of independent record stores across the world. A number of records are pressed specifically for Record Store Day, and are only distributed to shops participating in the event.

Background

Sparked by a comment by Bull Moose employee Chris Brown that something could be done along the lines of Free Comic Book Day, and with inspiration from a brainstorming session during a record store owners' meeting in Baltimore, Record Store Day was officially founded in 2007 by Eric Levin, Michael Kurtz, Carrie Colliton, Amy Dorfman, Don Van Cleave and Brian Poehner, and is now celebrated at stores across the world, with hundreds of recording and other artists participating in the day by making special appearances, performances, meet and greets with their fans, the holding of art exhibits, and the issuing of special vinyl and CD releases along with other promotional products to mark the occasion.

Amoeba

An amoeba (/əˈmiːbə/; rarely spelled amœba, US English commonly ameba; plural am(o)ebas or am(o)ebae /əˈmiːbiː/), often called amoeboid, is a type of cell or organism which has the ability to alter its shape, primarily by extending and retracting pseudopods. Amoebas do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals.

Microbiologists often use the terms "amoeboid" and "amoeba" interchangeably for any organism that exhibits amoeboid movement.

In older classification systems, most amoebas were placed in the class or subphylum Sarcodina, a grouping of single-celled organisms that possess pseudopods or move by protoplasmic flow. However, molecular phylogenetic studies have shown that Sarcodina is not a monophyletic group whose members share common descent. Consequently, amoeboid organisms are no longer classified together in one group.

The best known amoeboid protists are the "Giant Amoebae" Chaos carolinense and Amoeba proteus, both of which are widely cultivated and studied in classrooms and laboratories. Other well known species include the so-called "brain-eating amoeba" Naegleria fowleri, the intestinal parasite Entamoeba histolytica, which causes amoebic dysentery, and the multicellular "social amoeba" Dictyostelium discoideum.

San Francisco

San Francisco (/sæn frənˈsɪskoʊ/), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California and the only consolidated city-county in California. San Francisco encompasses a land area of about 46.9 square miles (121 km²) on the northern end of the San Francisco Peninsula, which makes it the smallest county in the state. It has a density of about 18,187 people per square mile (7,022 people per km²), making it the most densely settled large city (population greater than 200,000) in the state of California and the second-most densely populated major city in the United States after New York City. San Francisco is the fourth-most populous city in California, after Los Angeles, San Diego and San Jose, and the 13th-most populous city in the United States—with a Census-estimated 2014 population of 852,469. The city and its surrounding areas are known as the San Francisco Bay Area, and are a part of the larger OMB designated San Jose-San Francisco-Oakland combined statistical area, the fifth most populous in the nation with an estimated population of 8.6 million.