Today dogs are very reliable for detecting and finding the bodies of victims.Devastating earthquake struck the country again. In Sumatra and Jambi, shocks of 7.6 and 7 on the Richter scale devastated the buildings on the land and its inhabitants.To find the victims crushed by the ruins of iron, concrete, and other materials is not easy.Moreover, if the buildings are high rise buildings which collapsed ruins alone reached a dozen feet high.Recent times, there are several technologies that can help the team attempted to search or the medical team in finding the victim. Especially utilizing air media.For example, as quoted from Medindia, 5 October 2009, a group of researchers from the United States, at the National Meeting of the American Chemical Society, August 2009, revealed that they had been doing research to make portable devices that can detect the victim's body is buried. Their goal is to create an electronic device that can be found at the same time knowing how long the victim had died accurately.As is known, at this very reliable sniffer dogs to detect and find the bodies of victims from earthquakes, tornadoes, or other natural disasters."The dogs are very effective, but it takes time, cost, and effort to practice it a lot. If there is a tool that can do this effectively, this course should be attempted, "said Dr. Dan Sykes, scientists involved in such research.According to Sarah A Jones, a student who worked with Sykes, a tool like that could be developed to detect gases that are emitted when the human body begins to decompose in a variety of environmental conditions.From a series of tests, they managed to make a special sensor called Solid Phase Micro Extraction fiber (SPME) to capture the gas. Mentioned, specially coated fiber is a fiber that is used to take samples of air composition.Another with that conducted by researchers from the University of Georgia and U.S.Department of Agriculture (USDA). According to the researchers, who revealed his findings at the Biotechnology Review, January 2006 edition, a fly could someday be used to detect buried bodies, explosives, poisons, even cancer."The fly is an animal that is always busy to feel the environment," said Joe Lewis, USDA researchers involved in the project Wasp Hound. "They can detect the smell of what we want and then find the way to the source," he said.For that flies need to be trained to detect certain odors. For example, researchers gave sugar water on a fly that is hungry. After a few sessions, these flies can associate the smell of the sugar water with food and find the source of the smell when they find the smell in the air.When the attack on the World Trade Center, in New York, 11 September 2001, 300 trained dogs used to locate victims who tertimba ruins of the building. Although dogs are commonly used, but researchers say flies faster and cheaper to train."A sniffer dog takes 1 to 2 years to be properly trained, while flies only takes 5 minutes," said Lewis.Flies also proved to be more sensitive than artificial olfaction. For example, the Electronic Nose artificial NASA designed to detect ammonia leak in a spacecraft, can detect the concentration of ammonia to 1 per one million parts. While a fly can detect four per one billion parts.
On average, flies have similar sensitivity with a dog trained Bloodhound most, and 50 times more sensitive than the average human. However, still takes about 5 to 10 years to further explore what can be done flies.
"The fly probably will not replace sniffer dogs," said Lewis. "But in some ways, flies better. You can train more, easy, and inexpensive, complete search methods that we already have, "he said.
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