Tuesday, November 25, 2014

Luminescent Bacteria, Black footed ferret, Hagfish, Baggage handling system

Luminescent Bacteria  


-Luminescent bacteria are divided into two genera: Photobacterium and Vibrio

-Chemical energy is turned into light energy in a chemical reaction, making luminescent bacteria glow (the pigment luciferin is oxidised by the enzyme luciferase)

-Luminescent bacteria are symbiotic, existing within larger organisms such as the Angler fish, the Lantern fish, and certain jellyfish

-Luminescent bacteria can be found outside of the sea. A Canadian man once found some when he decided to have some imitation crab meat as a midnight snack. The bacteria has also been found to grow in seawater flush lavatories on cruise ships    


Black footed ferret

-Black footed ferrets are an endangered species native to central North America (they have been reintroduced in Wyoming, South Dakota, Montana, Colorado, Arizona, etc)
-They are about the size of a mink 
-They are most active above ground from dusk to midnight and 4 a.m. to mid-morning
-They were discovered in 1851 and their population declined steadily through the 20th century due to a decrease in the prairie dog population (up to 91% of their diet consists of prairie dogs) and the sylvatic plague
-They were declared extinct in 1979, but a woman's dog found a dead one in 1981, which then changed their status to endangered
http://media-cache-ec0.pinimg.com/236x/06/ab/62/06ab62c703da927137aa7cc7c3222956.jpg          http://voices.nationalgeographic.com/files/2011/09/ML_16011-950x633.jpg



-Hagfish are jaw-less, boneless, creatures that live in the depths of the Atlantic, Pacific, and Indian Oceans
-They do not have eyes, so they use the six short tentacles around their mouths to pick up scents and grab prey (worms, fish, crustaceans)
-The Hagfish has large glands on the sides of its body that secrete huge amounts of slime, discouraging predators from biting into it, and also helping them slip into the bodies of larger creatures, allowing them to feed on their insides
-Fossil records show that they are over 300 million years old and have changed very little over time




Baggage handling system

the goal of the system is to have the bags keep up with the passengers

There are three main parts to the baggage handling system:
     1.  Move the bags from the check-in area to the departure gate
     2.  Move the bags from one gate to another during transfers
     3.  Move the bags from the arrival gate to the baggage-claim area

-The system is similar to roads in a city. The bags are placed onto conveyer belts (local roads) and DVC or destination-coded vehicle tracks (highways)
-Hundreds of computers keep track of the location of every bag, every traveler's itinerary and the schedules of all the planes
-The computers control the conveyor junctions and switches in the DCV tracks to make sure that each bag ends up exactly where it needs to go

-When you check in, your bag is given a tag that contains all of your information, and from there, it goes to the conveyor belts, DCVs, is loaded onto the plane, makes a transfer if necessary, and goes to the baggage claim at the airport of the passengers final destination

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