The tangram (Chinese: ä¸å·§æ¿; pinyin: qÄ«qiÇobÇn; literally: seven boards of skill) is a dissection puzzle consisting of seven flat shapes, called tans, which are put together to form shapes.he first Tangram book to be published in America was based on the pair brought by Donnaldson. The puzzle was originally popularized by The Eighth Book Of Tan, a fictitious history of Tangram, which claimed that the game was invented 4,000 years prior by a god named Tan.
Get the facts on the misuse and abuse of prescription opioids such as hydrocodone, oxycodone, morphine, and codeine, and the illegal opioid, heroin. Opioids are a class of drugs chemically similar to alkaloids found in opium poppies. Historically they have been used as painkillers, but they also have great potential for misuse. Repeated use of opioids greatly increases the risk of developing an opioid use disorder.
2) Semi-synthetic opioid's-these drugs are NOT naturally occurring substances and are NOT opiates. Examples include hydrocodone, oxycodone, oxymorphone, hydromorphone, and diacetylmorphine (heroin).These drugs are built on opiates and have similar chemical structures.) Semi-synthetic opioid's-these drugs are NOT naturally occurring substances and are NOT opiates. Examples include hydrocodone, oxycodone, oxymorphone, hydromorphone, and diacetylmorphine (heroin).