There are many phrases in English that use two words connected with 'and'. For example, peace and quiet, fish and chips.
Lawnmowers, snow-blowers and other yard equipment Automobiles The Consumer Products Safety Commission CPSC reports that approximately people per year are killed by accidental CO poisoning with an additional people injured. A more recent review claims CO as the leading cause of more than 15, accidental poisoning deaths in the United States each year and another 10, injuries according to the Carbon Monoxide Medical Association These deaths and injuries are typically caused by improperly used or malfunctioning equipment aggravated by improvements in building construction which limit the amount of fresh air flowing in to homes and other structures.
While regular maintenance and inspection of gas burning equipment in the home can minimize the potential for exposure to CO gas, the possibility for some type of sudden failure resulting in a potentially life threatening build up of gas always exists. What are the medical effects of carbon monoxide and how do I recognize them?
When CO is inhaled, it combines with the oxygen carrying hemoglobin of the blood to form carboxyhemoglobin. Once combined with the hemoglobin, that hemoglobin is no longer available for transporting oxygen.
How quickly the carboxyhemoglobin builds up is a factor of the concentration of the gas being inhaled measured in parts per million or PPM and the duration of the exposure. Compounding the effects of the exposure is the long half-life of carboxyhemoglobin in the blood.
Half-life is a measure of how quickly levels return to normal. The half-life of carboxyhemoglobin is approximately 5 hours. This means that for a given exposure level, it will take about 5 hours for the level of carboxyhemoglobin in the blood to drop to half its current level after the exposure is terminated.
The following table describes the symptoms associated with a given concentration of COHb: Potential for long term effects especially in the case of infants, children, the elderly, victims of heart disease and pregnant women.
Expressed in this way, symptoms of exposure can be stated as follows: Life threatening after 3 hours. Unconscious within 2 hours. Death within hours. Death within 1 hour.
Death within minutes. As can be seen from the above information, the symptoms vary widely based on exposure level, duration and the general health and age on an individual. Also note the one recurrent theme that is most significant in the recognition of carbon monoxide poisoning- headache, dizziness and nausea.
When experienced in conjunction with a the sounding of a carbon monoxide these symptoms are the best indicator that a potentially serious buildup of carbon monoxide exists. This comment will be returned to later. What are the different types of carbon monoxide detectors and how do they work?
There are a number of different types and brands of carbon monoxide detectors on the market today; They can be most easily characterized by whether they operate on household current or batteries. Underlying this, in most cases, is the type of sensor employed in the detectors operation.
Detectors using household current typically employ some type of solid-state sensor which purges itself and re-samples for CO on a periodic basis. This cycling of the sensor is the source of its increased power demands. Detectors powered by batteries typically use a passive sensor technology which reacts to the prolonged exposure to carbon monoxide gas.
Are some types of detectors better than others? How do I select the best detector for me? Regardless of the type of sensor used all detectors sold on the market today should conform to minimum sensitivity and alarm characteristics. These characteristics have been defined and are verified by Underwriters Laboratory in their standard for carbon monoxide detectors UL This revision specified additional requirements regarding identification of detector type, low-level nuisance alarm sensitivity and alarm silencing.
Under no circumstances should one purchase a detector that is not UL listed.We spend on average 26 years of our lives fast asleep. The average person needs at least 7 to 8 hours of sleep per day to live a happy and productive life. These questions are for practice purposes only طـــقف بٝردتلا ر ـغل ٜه ةلئسلأا هذـه 8 8.
In paragraph 3, drawbacks means _____. A. advantages B. disadvantages C. things D. questions 9.
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Many binomials combine grammar words such as prepositions and conjunctions. ups and downs: the good and bad times in life The ups and downs of life are similar all over the world, but people react.