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Decomposition of Baby Pigs
Dr. Jerry Payne's time lapse movie of the decomposition of a baby pig. The technique of time-lapse photography is employed to illustrate the rapid removal of carrion (4 days reduced to approximately 6 minutes). The film demonstrates the sequence of tissue destruction and the role of insects in the ultimate dismemberment of the pig carcass and soil movement. The pink and purple beads were added to show the intense activities of the insects in moving the carcass and soil.
Payne writes..."My study was the first "detailed" study of succession in animal decomposition and the first with the pig as the model. The significance of the pig is that it closely approximates the human body (skin, body hair, size etc.) so the data generated could be used in modern forensic science to approximate the time of human deaths. At that time it was simply not possibly (moral/ethical/legal concerns) to perform decompositon studies with human corpses, I know because I tried and was denied. Even so there were many instances where some concerned person buried my research pigs."
The pigs used in the experiment were dead when Jerry Payne picked them up from local farmers. Mama pigs (sows) often lay down on their tiny piglets and crush them. This was very common on small farms and led to the invention and deployment of farrowing pens(birthing pens) where the sow is contained and the piglets have a heated space where they are not in danger of being crushed.
Flies have four life stages: adult (the fly), egg, larva (the maggot) and pupa. Maggots crawl into dark, secluded places to pupate (the stage where they undergo the transformation from maggot to adult). Since the maggots are white or cream colored they are easily seen and taken by predators. Going undergroundand away from the carcass offers protection from uv light and predators and allows them seclusion to pupate. This pupal stage is immobile. Maggots don't have to burrow into the soil as they could easily conceal themselves in leaf litter or any decayed organic material.
Length: 371
Rating: 4.10 (1470 ratings)
Tags: death forensic science CSI succession entomology Jerry Payne Clemson University folkstreams folkstreamer
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Rabbit decomposition (time-lapse video)
Time-lapse video clip of a rabbit decomposing over 8 days, compressed down to one minute. It was produced in the forest behind the Digital Frog International office, using a rabbit that was found by the road already dead.
We produced the video for a forest ecology program that was never completed as way of demonstrating natural decomposition in a manner that words alone could not describe. It can be a bit disturbing for some, but quite dramatically shows how quickly the process happens, the various insects and organisms who help in decomposition, and goes a long way to explaining why you don't often see the carcasses of dead animals in the woods--they don't last long.
For more information on this and other biology and ecology programs, visit our web site at http://www.digitalfrog.com
Length: 65
Rating: 4.70 (147 ratings)
Tags: decomposition decompose biology time-lapse nature
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Decomposition with music
Jerry Payne's made this film in the mid 1960s as part of his graduate work at Clemson University. Payne writes...My study was the first "detailed" study of succession in animal decomposition and the first with the pig as the model. The significance of the pig is that it closely approximates the human body (skin, body hair, size etc.) so the data generated could be used in modern forensic science to approximate the time of human deaths. At that time it was simply not possibly (moral/ethical/legal concerns) to perform decompositon studies with human corpses, I know because I tried and was denied. Even so there were many instances where some concerned person buried my research pigs. Music is by the Polish composer Goreck --his symphony #3 "Symphony of Sorrowful Songs". This song is based on a message written on the wall of a Gestapo prison during World War II.
Length: 344
Rating: 4.50 (285 ratings)
Tags: Time lapse Jerry Payne death dead pig decomposition forensic science art folkstreams folkstreamer
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Hydrogen Peroxide Decomposition
Associate Lecturer Adam van Wynsberghe, UW Madison, demonstrates the role of a catalyst, manganese dioxide, in the decomposition of hydrogen peroxide into water and oxygen.
Length: 11
Rating: 4.20 (10 ratings)
Tags: chemistry Madison demonstration
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time lapse decomposition
A time lapse experiment, using Francois Deux (a cooked pig head) as a subject. Francois was roasted (whole) at a pig roast on June 23rd, and kindly donated what was left of himself to this experiment. This video represents the first three days of the process. The original footage was shot at a rate of one frame every 5 minutes, at 1600 x 1200 pixel resolution.
While not a perfect scenario -- cooked remains aren't exactly found in the wild, and this certainly affected the process -- the resulting time lapse video shows how quickly nature reclaims organic matter and redistributes the resources to the lower end of the food chain. Not only did Francois provide food for several thousand maggots, they in turn were eaten by scores of birds as they left the head site to pupate.
See the setup photos here: http://flickr.com/photos/jmillerid/sets/72157600666862480/
Length: 28
Rating: 4.10 (76 ratings)
Tags: time lapse pig
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Factoring the hard trinomial by decomposition
How to factor a trinomial where the coefficient of the quadratic How to factor a trinomial where the coefficient of the quadratic term is not 1 and does not go into the other coefficient using the "decomposition method". This video is the 10th out of 16 in the Factoring series. The other three series are "Solving Equations", "Word Problems" and "Graphing".
Length: 257
Rating: 5.00 (57 ratings)
Tags: mathematics factoring series
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