They act in broadly the same way as MAOIs - to increase levels of noradrenaline - but do not have the same dangerous side effects They can, however, take weeks to work. At present, they are the most widely prescribed antidepressant, as well as being used to relieve anxiety symptoms.The newest type of antidepressant are the selective serotonin re-uptake inhibitors (SSRIs) - the best-known (some might say notorious) being Prozac. MAOIs block the enzyme involved in the breakdown of the neurotransmitter noradrenaline - which means that they increase the brain's noradrenaline level. Depression can be triggered by bereavement, unemployment, divorce or separation, loneliness, after childbirth and even after viral infections.
Depressed people get tired easily, cannot concentrate, sleep badly and lose their appetite. Doctors therefore believed that stimulating the brain's natural activity might cure depression, and this is what all of the three main classes of anti-depressant drug attempt to do. Monoamine oxidase inhibitors (MAOIs) were the first breakthrough in antidepressant treatment. Be wary of "rustproof" treatments which challenge you to "paint a nail with this and then put it in a jar of water - it won't rust!" If you do this, try immersing an untreated nail too - that won't rust either. .Why are grandfather clocks so tall?The longer the pendulum, the longer the swing. To take one second to swing from one side to the other and one second to swing back, a pendulum needs to be almost exactly one metre long - a remarkable coincidence of natural ratios between the Earth's gravity and pi, the circular ratio.You can visit the Technoquest site at http:// www.campus.bt /CampusWorld/pub/ScienceNet. Questions and answers provided by Science Line's Dial-a-Scientist, 0345 600444.. IT IS ESTIMATED that up to 70 per cent of adults have clinical depression at some time in their lives.
The material recovered can easily be reused depending on how contaminated it is. For example, fridge companies can just filter and remove moisture from the gas before using it again. But if it is taken by local councils, it might need to be distilled to separate out the different CFCs so that it can be used in different applications.The material extracted by local councils is controlled by several central organisations, and fines are imposed on those who let the gases out uncontrolled.Where were dinosaurs discovered?Dinosaurs were first found in the Western world in Britain in 1817, when quarrymen in the village of Stonesfield, in north Oxfordshire, discovered some megalosaurus bones. Those bones were unearthed near Cuckfield in Sussex.How do things rust?To create rust you need water, air and (of course) iron.
