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    Airplane Crashes

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    Airplane Crashes There are many airplane accidents a year. On an average, 70 –80% are human error. Though there are many other factors, such as design factors, management, and weather factors, human error is the largest. Each one of these factors played a certain role in the three articles of accidents. The BOAC Comet, the PSA crashes in San Diego, and the Air Florida crash in Washington D.C., were analyzed differently, taking into consideration each possible factor. Within the follow,

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    What is Nitrox?

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    proportion of nitrogen by increasing the proportion of oxygen reduces the risk decompression sickness for the same dive profile. (see Appendix 2) Nitrox also allows for extended dive times without the need for decompression stops. (see Appendix 3) One of the more significant aspects of this application is the extended no-stop time when using the Nitrox mixtures. The exact values of the extended no-stop times vary on the decompression table used to derive the tables used for the no-stop times, varying on

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    Enriched Air Nitrox

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    usually used in Recreational No Decompression Dives. But really, Nitrox refers to any Nitrogen-Oxygen gas-mix, including blends that have less oxygen than air. For the purpose of Technical Diving, you learn to use Nitrox gas mixes from below 21% to up to 100% - although the richer mixes are usually used only for decompression. Although Enriched Air Nitrox is relatively new to recreational diving, military and research divers have been using it to extend their no decompression limits for over 50 years.

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    An aviation accident is characterized by the Сonvention on Іnternational Сivil Аviation Аnnex 13 as an circumstance correlated with the conveyance of an aircraft, which takes place during the planes’ journey; Where a person suffers from injuries or the plane sustains damage and it’s missing or inaccessible. Plane crashes can occur by all ranges of causes from human error to weather related. An occurring accident usually results in a high amount of casualties which leaves a bad mark on aviation. As

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    daniele

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    Spinal muscular atrophy. Spinal muscular atrophy is one of the most devastating children disease since affects babies from birth on (some time it can be detected during the gestation), and, in its more severe form type 1 or Werdnig-Hoffmann disease, in which patients can not sit and some of them have also the inability to control the position of the head, the life expectancy of this form does not exceeds 2 years. Type 2 SMA is an intermediate form, it onset is between 7 to 18 months of age and the

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    The Underwater World

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    The Underwater World "There you are, totally weightless, quietly soaring just above the sea floor with only the smallest amount of physical exertion. Small fish come out of their holes to look at you. How about that? You are the curiosity. You are the thing that does not belong. Perhaps this is why you dive. You are taking part in exploring man's last ecological frontier. The very thought would excite anyone whose blood still flows in his veins. The diver is the observer, he looks at everything

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    Oxygen

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    Oxygen Systems Knowledge is more important now than ever in using oxygen while flying in General Aviation. New high performance unpressurized aircraft are allowing more pilots to fly in the 10,000-18,000ft altitude range. Most pilots have not received proper training in the physiological effects of flying at those altitudes or the advantages and disadvantages of different oxygen systems available. Recreational pilots are most at risk for having issues using oxygen systems due to the lack of structured

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    Aviation Physiology Introduction Human beings can adjust to different environmental conditions (Wilson, 2016). In this case, the human body acclimates to external temperatures and variations in barometric pressure. Therefore, this homeostatic response is critical to adjust to unique environmental conditions, which differ from one habitat to the other. In addition, the reaction ensures that the body meets the ever-changing energy demands due to the variations in the amount of mental and physical activity

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    Urgent Urinary Drainage

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    Introduction Urgent urinary drainage is the standard of care in patients with obstructive calcular anuria (OCA) and post-renal acute renal failure (ARF). This is done with retrograde ureteric stenting or a percutaneous nephrostomy tube (PCN); however, the indications for use have not been studied. Although few studies compared ureteric stenting with PCN in obstructive urolithiasis associated with infection [1-2] or pain [3], but this comparison is lacking in literature as regard obstructive urolithiasis

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    THE COMPOSITION OF SURGICAL SMOKE AND AEROSOL The generation of surgical smoke by electrocautery and laser systems occur from the thermal action on the tissue and even though the energy source can differ the qualities of the smoke produced by these two methods are very similar (Alp et al., 2006). When a “hot” tool, such as a laser or electrosurgery device, is used to vaporize, cut, ablate, excise, or coagulate tissue surgical smoke is produced.(Baggish et al., 1988) This smoke contains three primary

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    EMERGING ISSUES IN HOSPITALITY AND TOURISM   Introduction Tourism is the travelling for leisure, business or family and recreational purposes, normally for limited period. Tourism has become popularized as leisure activity. It can be international or domestic, and international tourism has both outgoing and incoming implications on balance of payment of a country. The hajj is the keystone of Saudi tourism. In 2004 approximately 2 million pilgrims came to Saudi Arabia, and nearly 500,000 Saudis take

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    Cardiovascular system Congenital Heart Disease Congenital heart disease is a defect in one or more structures of the heart or blood vessels that occurs prior to birth. Defects can be severe at birth and require immediate attention, while others are mild that will heal on its own, and some go unnoticed until a person is older. It affects 1 out of every 100 children at birth (WebMD, American Heart Association). Heart valve defects include narrowing of the valves or complete closure that stops forward

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