Poison dart frog Dart frog Dart frogs lives in central and south America, in tropical rain forests. This specie belongs to Dendrobatidae family of frogs. Poison dart frogs eat insects, ants, termites, and beetles. Appearance The size of the frog may vary from 1.5 centimeters to 6 centimeters. Some poison dart frogs weigh as less as 2 grams and are about the size of a paper clip. Their colouring can be yellow, gold, copper, red, green, blue or black. Colourful skin is very appealing yet venomous. Dart frog venom These frogs some species are absolutely lethal. Poison dart frogs keep their poison in their skin and this can kill anyone that touches them. The golden poison dart frog has enough venom to kill 10 adult humans. Only two micrograms of all dart frogs venom is enough to kill a large mammal. Other facts Only some predators like certain spiders and the Amazon ground snake seem immune to the poison dart frog toxins. Frogs get poi...
Patented in 1961 by the research arm of Boots company and led by Stewart Adams Aim was to find safer product instead of Aspirin Industrial production follows Boots ` synthesis procedure Ibuprofen in body It acts on compounds called prostaglandins: Physiologically active lipid compounds having diverse hormone Found in almost every tissue in human They are derived enzymatically from fatty acids They bring out inflammatory response Ibuprofen's action as a painkiller and fever-reducing compound is due to its ability to inhibit the synthesis of prostaglandins It does this by interfering with the action of an enzyme called cyclooxygenase which catalyzes the conversion of a compound called arachidonic acid into prostaglandins 4 step Ibuprofen synthesis First step: Nucleophilic addition Reduction of the carbonyl group C=O by sodium tetrahydridoborate produces a secondary alcohol group CHOH. Second step: Sn1 nucleophilic substitution of the
olnud praktiliselt mingisugust efekti marijuana üldisele kasutamisele ja uskumuste ning suhtumise muutumisele marijuana tarvitamises Ameerika noorukite hulgas. Weed is not actually as bad as everyone thinks. It is like it is because every people has their own point of view on all topics, everyone can't have the same views because then we would not be different from anyone. Weed is a drug but not only a drug it is also a medicine it's like a painkiller. Even the USA-s presidents have grown weed and they did not take it like a drug but they took it as a medicine so it only is a drug when you want it to be a drug Siit sain infot: 1. Merit Kopli, "Euroopa arutab uimastite üle", Eesti Päevaleht, 01.10.1997 2. Costa Rican Study, 1980; Jamaican Study, 1975; Nixon Blue Ribbon Report, 1977 3. John Stuart Mill, "Vabadusest" lk. 47, 1995 4. Allan Kiik, "Kanep - moraali ja teaduse igipõline konflikt" internet http://www.kirmus
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