ASBESTOS |
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Asbestos (a misapplication of Latin: asbestos "quicklime" from Greek ἄσβεστος: a-, "not"; sbestos, "extinguishable") describes any of a group of fibrous metamorphic minerals of the hydrous magnesium silicate variety. The name is derived for its historical use in lamp wicks; the resistance of asbestos to fire has long been exploited for a variety of purposes. It was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth, which, according to legend, he threw in a fire to clean. Asbestos occurs naturally in many forms (see below); it is mined from metamorphic deposits.
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DROWNING |
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Drowning is death caused by the filling of the lungs by a liquid, usually water, rendering breathing ineffective and leading to death due to asphyxia. Near drowning is initial survival of a drowning event, and can lead to serious secondary complications including death later on; cases of near drowning therefore also require attention by medical professionals. Secondary drowning is death due to chemical and biological changes in the lungs after a near drowning incident or exposure to chemicals. In many countries, drowning is one of the leading causes of death for children under 14 years old.
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DRUG TESTING |
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A Drug test is a process using some kind of biological matter taken from an individual to determine previous drug use. Drug testing is a subject of much controversy. Many have argued that it is an invasion of privacy. The accuracy and effectiveness of some tests are also in question, however, if proper steps are followed, including a GC/MS quantitative laboratory confirmation test, drug testing technology is highly reliable.
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ENGINEERING - ELECTRICAL |
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Electrical engineering (sometimes referred to as electrical and electronics engineering) is a professional engineering discipline that deals with the study and application of electricity, electronics and electromagnetism. The field first became an identifiable occupation in the late nineteenth century with the commercialization of the electric telegraph and electrical power supply. The field now covers a range of sub-disciplines including those that deal with power, control systems, electronics and telecommunications.
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LEAD |
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Lead is a chemical element in the periodic table that has the symbol Pb (L. plumbum) and atomic number 82. A soft, heavy, toxic and malleable poor metal, lead is bluish white when freshly cut but tarnishes to dull gray when exposed to air. Lead is used in building construction, lead-acid batteries, bullets and shot, and is part of solder, pewter, and fusible alloys. Lead has the highest atomic number of all stable elements. (But see the article on Bismuth, which has a half life so long it can be considered stable.)
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MEDICAL PHYSICS |
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Medical physics is a branch of applied physics concerning the application of physics to medicine. It generally concerns physics as applied to medical imaging and radiotherapy, although a medical physicist may also work in many other areas of healthcare. A medical physics department may be based in either a hospital or a university and its work is likely to include research, technical development and clinical healthcare.
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PACKAGING and LABELLING |
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Packaging is the enclosing of a physical object, typically a product that will be offered for sale. Labelling refers to any written or graphic communications on the packaging or on a separate label.
The purpose of packaging and labels
Packaging and labeling have five objectives:
Physical protection of the object - The objects enclosed in the package can be protected from damage caused by physical force, rain, heat, sunlight, cold, pressure, airborne contamination, and automated handling devices.
Agglomeration - Small objects are typically grouped together in one package for reasons of efficiency. For example, a single box of 1000 pencils requires less physical handling than 1000 single pencils. Alternatively, bulk commodities (such as salt) can be divided into packages that are a more suitable size for individual households.
Information transmission - Information on how to use, transport, or dispose of the product is often contained on the package or label. An example is pharmaceutical products, where some types of information are required by governments.
Marketing - The packaging and labels can be used by marketers to encourage potential buyers to purchase the product. Package design has been an important and constantly evolving phenomenon for dozens of years.
Reducing theft - Some packages are made larger than they need to be so as to make theft more difficult. An example is software packages that typically contain only a single disc even though they are large enough to contain dozens of discs.
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