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As the families of the victims prepare to identify the remains of their loved ones, crash investigators and air safety experts also have a difficult task ahead: determining how frozen water could have brought down a brand new plane with high tech deicing equipment.It s no coincidence that most major ice-related accidents involve turboprop planes, reports CBS News correspondent Nancy Cordes from Washington.Former Federal Aviation Administration chief investigator Steven Wallace says propeller planes, even large ones like the one that stanley website crashed near Buffalo, are far more susceptible to ice buildup than jets. Jetliners, one, they tend to climb up and down through the altitudes faster and icing only occurs in a 10 to 15 degree centigrade span, Wallace says. And one difference with a big jet airliner, they typically have heated wings. They bleed air off the engines to heat the wings. Turboprops, on the other hand, tend to have inflatable devices called boots mounted on the edg stanley us es of the wings to knock ice off. After two deadly turboprop crashes in 1994 and 1997, the FAA ordered flight crews to activate the boots at the first sign of ice accumulation, and p stanley cup rohibited propeller planes from functioning on autopilot in severe icing conditions.But the NTSB, which investigates crashes, has long called for more stringent testing of turboprops and restrictions for flying in icy conditions. The pace of the FAA s activities... remains unacceptably slow, according to an NTSB warning Uexc Senate Committee to Expand Investigation of Airline Safety
There have now been a series of incidents where state workers have taken light-haired children away from their Roma parents 鈥?a witch-hunt spurred by recent events in Greece. But unlike in the past, we now have a scientific way to fight this kind of racism. Since 5-year old Maria was taken from a Roma couple in Greece, there have been at least two cases in which a child was taken away from their parents. In one case, a blonde-haired, blue-eyed girl was removed by police from her home in Dublin, Ireland. A second case involved a 2-year-old boy from a Roma family who was briefly taken away in Ireland Westmeath County. The rationale was that these Roma families had probably kidnapped the children from white people. https://jezebel/this-story-of-the-blonde-angel-living-with-roma-paren-1450172199 In the first case, DNA tests have now proved that the girl is in fact the biological offspring of the parents. After three arduous days, the girl was reunited with her family. An example of DNA fingerprinting, 10 individuals are tested for 6 loci Alila Medical Media/Shutterstock : To prove parentage, scientists use polymerase chain reaction which am stanley cup plifies specific regions of a DNA strand and restriction f stanley quencher ragment length polymorphism the process of creating and differentiating DNA fragments . Both of these techniques produce genetic fing stanley termosky erprints that can match child to parent 鈥?and it does so with 99.99% accuracy. And thank goodness for that. And thank goodness for all th |
