http://netvouz.com/narky/tag/injection?feed=rss narky's bookmarks tagged "injection" on Netvouz http://en.wikipedia.org/wiki/Bijection%2C_injection_and_surjection In mathematics, injections, surjections and bijections are classes of functions distinguished by the manner in which arguments (input expressions from the domain) and images (output expressions from the codomain) are related or mapped to each other. Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups narky Tue, 01 May 2007 02:47:52 GMT http://en.wikipedia.org/wiki/Dimethyltryptamine Dimethyltryptamine, also known as DMT and N,N-dimethyltryptamine, is a hallucinogenic tryptamine, similar in structure to the neurotransmitter serotonin. DMT is created in small amounts by the human body during normal metabolism. Pure DMT at room temperature is a colorless waxy or crystalline solid. DMT was first chemically synthesized in 1931. Lifestyle > Drugs narky Thu, 01 Jun 2006 06:44:56 GMT http://en.wikipedia.org/wiki/Methamphetamine Methamphetamine is a synthetic stimulant drug used for both medicinal and recreational purposes. Like most stimulants, methamphetamine can cause a strong feeling of euphoria, thus creating the potential for addiction. Lifestyle > Drugs narky Wed, 31 May 2006 10:49:56 GMT http://en.wikipedia.org/wiki/MDMA MDMA (3,4-methylenedioxymethamphetamine), most commonly known today by the street name ecstasy or XTC, is a synthetic entactogen of the phenethylamine family whose primary effect is to stimulate the secretion of and inhibit the re-uptake of large amounts of serotonin as well as dopamine and norepinephrine in the brain, inducing a general sense of openness, empathy, energy, euphoria, and well-being. Lifestyle > Drugs narky Thu, 01 Jun 2006 06:38:10 GMT