À§ ±×¸²À» Ŭ¸¯ÇϽøé BBC 6 minute English site·Î ¿¬°áµË´Ï´Ù.
À̹ø ÁÖ ÁÖÁ¦´Â cancer -sniffing dogs (Dogs being used in cancer detection) ÀÔ´Ï´Ù.
The UK¡¯s National Health Service is currently assessing whether dogs can be used to detect early stage prostate cancer.
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https://www.youtube.com/embed/e5iFoA3eyE8 (ȸé°ú Á¤¸® ÀÚ¸·ÀÌ ÀÖ¾î ÀÌÇØ°¡ ´õ Àߵǿä)
https://www.youtube.com/embed/ElRTwz3VNDc (ȸé°ú ¿µ¾îÀ½¼ºÀÌ ÀÖ¾î¿ä)
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A wet nose, four paws, which is what we call the feet of certain animals, a fluffy coat and a waggy tail?
°³°¡ ¾ÏÀ» ¹ß°ßÇÒ ¼ö Àִ Ưº°ÇÑ ´É·ÂÀ» °¡Áú ¼ö ÀÖ´Â °ÍÀº °³ÀÇ ¶Ù¾î³ ÈÄ°¢¶§¹®ÀÔ´Ï´Ù.
dog is in fact a highly sophisticated bio-sensor.
highly sensitive nose, going down to parts per trillion.
°³´Â ¼ûÀ» µéÀ̽¯ ¶§ ÄÚ ¾ÕÂÊÀÎ Ä౸¸ÛÀ¸·Î °ø±â¿Í ÇÔ²² ³¿»õ ºÐÀÚ°¡ ÇÔ²² µé¾î¿À°í À̶§ ³¿»õ¸¦ Áö°¢ÇÕ´Ï´Ù. °³Ã³·³ ´Ù¸®°¡ ³ÝÀÎ µ¿¹°Àº ¸Ó¸®°¡ ¶¥¿¡ °¡±õ°í µû¶ó¼ ½Ã°¢º¸´Ù´Â ÈÄ°¢ÀÌ ¿ÜºÎÁ¤º¸¸¦ ¹Þ¾ÆµéÀÌ´Â ÁÖ °¨°¢ÀÌ´Ù. µû¶ó¼ ¸Ó¸®ÀÇ ÇغÎÇÐÀû ±¸Á¶µµ ³¿»õ¸¦ Àß ¸ÃÀ» ¼ö ÀÖ°Ô ÃÖÀûȵǾî ÀÖ½À´Ï´Ù.
¹Ý¸é »ç¶÷Àº ¹Ý¸é µÎ ´Ù¸®·Î ¼±â 떄¹®¿¡ ½Ã¾ß°¡ ³Ð¾îÁö¸é¼ ½Ã°¢¿¡ ´õ ¸¹ÀÌ ÀÇÁ¸ÇÏ°Ô µÇ¾ú°í ¿ÜºÎÁ¤º¸·Î¼ Á߿伺Àº ¶³¾îÁö°Ô µÇ¸é¼ ¾ó±¼ Çüŵµ ÁÖµÕÀÌ°¡ ¾ø¾îÁö°í ´«ÀÌ ¾ÕÀ¸·Î ³ª¿À°Ô µÇ¾ú´Ù´Â ÁøÈ·ÐÀûÀÎ ¼³¸íµµ ÀÖ½À´Ï´Ù.
¿©±â¼ Àá±ñ~ ½ºÅ©¸³Æ®¿¡ ¼Ò°³µÈ ´ÜÀ§¸¦ »ìÆ캼±î¿ä?
ppmÀ̶ó´Â ´ÜÀ§´Â ¸¹ÀÌ µé¾îºÃÁö¿ä?
º¸Åë ppmÀº ¼öÁú ¿À¿°µµ³ª ´ë±â ¿À¿°µµ¸¦ Ç¥½ÃÇÒ ¶§ ¾²ÀÌ´Â ´ÜÀ§ÀÔ´Ï´Ù.
¿¹¸¦ µé¾î ¹° 1KgÀº 1000g ÀÌ´Ù. 1gÀº 1000mgÀÌÁÒ. µû¶ó¼ ¹° 1KgÀº 1000,000mgÀÌ´Ù.
Áï ¹°¿¡ ¾î¶² ¿À¿° ¹°ÁúÀÌ 1mg Æ÷ÇԵǾî ÀÖ´Ù¸é ÀÌ°ÍÀ» 1ppmÀ̶ó°í ÇÕ´Ï´Ù.
À̺¸´Ù ´õ ±Ø¹Ì·®À» ³ªÅ¸³¾ ¶§ ppb, ppt¸¦ »ç¿ëÇÏ°Ô µË´Ï´Ù.
ppb(parts per billion)´Â ¿À¿°¹°Áú ³óµµ°¡ 10¾ïºÐÀÇ ¸îÀΰ¡¸¦ ³ªÅ¸³À´Ï´Ù.
¹° 1L¿¡ ¸î §¶(¸¶ÀÌÅ©·Î±×·¥, 1000ºÐÀÇ 1 §·)ÀÌ µé¾î ÀÖ´À³Ä¸¦ ³ªÅ¸³»´Â ´ÜÀ§ÀÌÁÒ.
¶Ç ¾ÆÁÖ ¹Ì¼¼ÇÑ ³óµµ¸¦ µûÁú ¶§¿¡´Â ppt (parts per trillion)À» »ç¿ëÇϱ⵵ ÇÕ´Ï´Ù.
³óµµ°¡ 1Á¶ ºÐÀÇ ¸îÀΰ¡¸¦ ³ªÅ¸³¾ ¶§ »ç¿ëµÇ¸ç ¹° 1L¿¡ ¸î ng(³ª³ë±×·¥, 1000ºÐÀÇ 1§¶)ÀÌ µé¾îÀÖ´À³Ä¸¦ ³ªÅ¸³»´Â ´ÜÀ§ÀÔ´Ï´Ù.
one part per hundred (%) - 1/100 (¹éºÐÀÇ ÀÏ) = 1/102
one part per thousand (¢¶) - 1/1,000 (õºÐÀÇ ÀÏ) = 1/103^3
one part per million (ppm) - 1/1,000,000 (¹é¸¸ºÐÀÇ ÀÏ) = 1/106^6
one part per billion (ppb) - 1/1,000,000,000 (½Ê¾ïºÐÀÇ ÀÏ) = 1/109^9
one part per trillion (ppt) - 1/1,000,000,000,000 (ÀÏÁ¶ºÐÀÇ ÀÏ) = 1/1012^12
ppb = ppm¡¿103
ppt = ppm¡¿106
Dog is Man¡¯s best friend?
°³´Â Àΰ£ÀÇ best friendÀÌÀÚ Àΰ£À» ¿©·¯¸é¿¡¼ µ½´Â ¿ªÇÒÀ» ÇÕ´Ï´Ù.
(1) have a highly-developed sense of smell
to act as a bio-sensor, a sensor which uses a living thing to detect chemicals.
security to screen, or examine for suitability, for explosives and bombs.
(2) support human
1) guide dogs(seeing-eye dogs) : help people who are blind to avoid danger
2) guard dogs: keeps a house or place safe from burglary, theft or trespassing)
3) rescue dogs : be trained to search and find victims of natural disasters such as avalanches or earthquakes.
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Vocabulary
1) as sick as a dog : very sick
: ¡®very ill¡¯.
(ex) When was the last time you were as sick as a dog
2) paws
: the feet of certain animals which have pads and claws
pads and claws(¹ß¹Ù´Ú°ú ¹ßÅé) ÀÖ´Â µ¿¹°µé : dogs, cats, rabbits, bears and mice µîµî
hooves(hoof: ¹ß±Á) : horses, sheep or pigs
3) biosensor
: a sensor which uses a living thing to detect chemicals
combination of the words biology and sensor.
uses a living thing to detect chemicals.
famous historical example of biosensor : canary
( Miners in danger of a highly toxic but invisible gas called methane used to carry a in a cage down the mine with them. If the canary became ill or died, they knew that the air was toxic. )
4) to screen
: to examine something for its suitability
(such as luggage going through an airport – where they would screen for explosives)
screen out
: to not include somebody/something, or not allow somebody to join an organization, enter a country, etc. because you think they may not be suitable or may cause trouble
to prevent something that is dangerous or unsuitable from coming in
(ex) These days you can get an ad-blocker on your computer that will screen out those annoying pop-up adverts
5) deterrent
: a thing which stops a person from doing something such as the fear of punishment for a crime
6) orthodoxy
: a generally accepted way of doing things
Its adjective is orthodox
Its opposite word – unorthodox (unusual)