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Dibenzopyrenes are a group of high molecular weight polycyclic aromatic hydrocarbons with the molecular formula C 24 H 14.There are five isomers of dibenzopyrene which differ by the arrangement of aromatic rings: dibenzo[a,e]pyrene, dibenzo[a,h]pyrene, dibenzo[a,i]pyrene, dibenzo[a,l]pyrene, and dibenzo[e,l]pyrene.
The ubiquitous compound can be found in coal tar, tobacco smoke and many foods, especially grilled meats. The substance with the formula C 20 H 12 is one of the benzopyrenes, formed by a benzene ring fused to pyrene. Its diol epoxide metabolites, more commonly known as BPDE, react with and bind to DNA, resulting in mutations and eventually cancer.
Liesegang rings usually cut across layers of stratification and occur in many types of rock, some of which more commonly include sandstone and chert. [3] Though there is a high occurrence of Liesegang rings in sedimentary rocks, [6] relatively few scientists have studied their mineralogy and texture in enough detail to write more about them. [12]
Titanium rings are jewelry rings or bands which have been primarily constructed from titanium. The actual compositions of titanium can vary, such as "commercial pure" (99.2% titanium) or "aircraft grade" (primarily, 90% titanium, 6% aluminum, 4% vanadium), and titanium rings are often crafted in combination with other materials, such as gemstones and traditional jewelry metals.
A Voice for Men, also known as AVfM, AVFM, or AV4M, is a United States–based for-profit limited liability company and online publication founded in 2009 by Paul Elam. [1] It is the largest [ citation needed ] and most influential [ citation needed ] site of the men's rights movement .
"Single Ladies (Put a Ring on It)" is a song recorded by American singer and songwriter Beyoncé, from her third studio album, I Am... Sasha Fierce (2008). Columbia Records released "Single Ladies" as a single on October 8, 2008, as a double A-side alongside "If I Were a Boy", showcasing the contrast between Beyoncé and her aggressive onstage alter ego Sasha Fierce.
John Wick is an American neo-noir crime action film series and media franchise created by Derek Kolstad.It centers on the titular character portrayed by actor Keanu Reeves.Wick is a legendary hitman who is reluctantly drawn back into the criminal underworld after retiring.
The Big Brass Ring is a 1999 drama film, starring William Hurt, Nigel Hawthorne, Irene Jacob, Jefferson Mays and Miranda Richardson (who was nominated for a Golden Globe Award for her performance). The film's script was heavily rewritten by George Hickenlooper and F. X. Feeney from a previous screenplay written by Orson Welles and Oja Kodar in ...
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