EARTHQUAKES |
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An earthquake is a sudden and sometimes catastrophic movement of a part of the Earth's surface. Earthquakes result from the dynamic release of elastic strain energy that radiates seismic waves. Earthquakes typically result from the movement of faults, planar zones of deformation within the Earth's upper crust. The word earthquake is also widely used to indicate the source region itself. The Earth's lithosphere is a patch work of plates in slow but constant motion (see plate tectonics). Earthquakes occur where the stress resulting from the differential motion of these plates exceeds the strength of the crust. The highest stress (and possible weakest zones) are most often found at the boundaries of the tectonic plates and hence these locations are where the majority of earthquakes occur. Events located at plate boundaries are called interplate earthquakes; the less frequent events that occur in the interior of the lithospheric plates are called intraplate earthquakes (see, for example, New Madrid Seismic Zone). Earthquakes related to plate tectonics are called tectonic earthquakes. Most earthquakes are tectonic, but they also occur in volcanic regions and as the result of a number of anthropogenic sources, such as reservoir induced seismicity, mining and the removal or injection of fluids into the crust. Seismic waves including some strong enough to be felt by humans can also be caused by explosions (chemical or nuclear), landslides, and collapse of old mine shafts, though these sources are not strictly earthquakes. These sources will also show a different seismogram than earthquakes
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PSYCHIATRY |
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Psychiatry is the branch of medicine that studies, diagnoses, and treats mental illness and behavioral disorders. While all physicians will encounter patients with mental illnesses and any of them may treat it, psychiatrists specialize in these areas. They are more extensively trained in the differential diagnosis (the distinguishing of various forms) and treatment of mental illness. Given the advantage of the preliminary medical training as well as further specialist training, psychiatry when practised properly offers a truly holistic approach to patient care. Many other professionals also provide mental health care, such as psychologists, nurse practitioners, counselors, physician assistants, and social workers. In general only doctors, nurse practitioners, or physician assistants may prescribe mental health medication in the United States[1]. In some countries, mental health medication may only be prescribed by medical doctors.
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TRADEMARK |
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A trademark is a distinctive sign of some kind which is used by a business to uniquely identify itself and its products and services to consumers, and to distinguish the business and its products or services from those of other businesses. A trademark is a type of industrial property which is distinct from other forms of intellectual property.
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