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To Dodds vacancies viewing messages, select the forum that you want to visit from the selection below. Vacuum chucking be aware! I want to share an experience I had with vacuum chucking that was a near disaster. First of all, let me say that I have had a lot of experience with vacuum chucking. I been using vacuum on three different lathes in my shop for at least ten years with great success and very few problems. I was just finishing up an order for three bowls and decided to use a vacuum chuck when finish turning the bottoms. As a safe practice, I routinely leave the live center against the bottom of the piece until I have removed as much waste stock as possible then start the vacuum pump and slide the tail stock Dodds vacancies As usual I checked the vacuum gauge first and observed 24 Hg. As soon as I removed the tail stock the piece flew off the lathe and landed about 10 feet away. I put my finger over the inlet of the pipe that goes through the spindle and felt no vacuum or flow, but the gauge still registered 24 Hg. I pushed a long drill bit through the pipe and dislodged a mud dobbers nest and immediately attained vacuum and flow. Amazingly, my piece wasnt damaged! The first mistake I made is I pulled a through pipe off the shelf without checking it for blockage I live in Florida. The second mistake I made was not turning the lathe off before removing the tail stock. I hope some of you will benefit from my misadventure. Don Thanks for sharing! Glad you werent hurt and that your bowl survived!! You never know what you got til its gone! I am glad you and your bowl are OK. I can attest to the problem with mud dobbers when I use to own my machine shop they would clog every Dodds vacancies in the building. It was a constant fight with them and I rarely won. Just one more thing to check to prevent a disaster. Thanks. Don thanks for the info. Glad things turned out ok and you werent hurt. and say, Hi, Honey, Im home forever. Glad youre both, especially you, as wood grows on trees round and again, thanks for the warning! If its more complicated than a hammer, Im C/O David E Keller registered tree offender. 3 94 miles from Steve Schlumpf. 3 98 from John Keeton approx. 92 from Kathy I live too far away! Good post, Don! Glad you were not injured. Darn, never thought of that, glad youre safe! Guess we need to pre-op Dodds vacancies our vacuum systems before Dodds vacancies our faces over Dodds vacancies we think its holding. Great info, thanks. Bet you messed up some dirt dobbers day though.

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All of them receive federal funding for experiments on animals, which, of course, means that we taxpayers are funding the experiments. When a scientist uses sentient beings as if they were things, inanimate things, disregarding their pain and suffering, he/she runs the risk of following the path that led Nazi scientists to perform cruel experiments on prisoners of concentration camps. Excuses such as this is done for the sake of knowledge or of the motherland is not enough. People City of charlotte job vacancy postings know how their tax money is spent on such terrible procedures. A really sad but true City of charlotte job vacancy postings is that some knowledge must be won by suffering from innocent beings, as an example, nowdays we use information on hypothermia gained by Natzi scientists by dumping prisioners on icy water and finding the changes that their metabolism suffered, that information nowdays saves people everywhere where extreme cold exposure comes in play. I believe it is up to us to honor the memory of people and creatures involved in this experimets by not putting it all in a black and white perspective. I remember well how animals used to be used as subjects for really disgusting studies that were truly unnecessary for science. One can argue that it is necessary to test animals in the vacuum of space as a means of safety for an astronaut but in reality, this is We know that a vacuum will kill you in a few it is a no brainer. An astronaut in trouble will be saved as fast as possible which may or may not be fast enough but no one will be watching the clock in the saving. If the person survives well and good and if not, having wiped out horridly dogs and chimps would have taught us Nada. Sacrificing animals for AIDS research or cancer research is a whole different paradigm and is necessary an engineering issue is most Nice Valentine. Sometimes animal models have to be used, but they should be used sparingly. In the cases discussed here the only motive I see is idle curiosity, something along the lines of, Do babies feel pain? Lets hurt one and find out. Folks, It was 40 years ago. Most of the tax payers that paid for these experiments are now dead. In those days we had no Idea what would happen to City of charlotte job vacancy postings in a vacuum. Many lives both human and animal have been lost in the attempt to conquer Space. To missquote Carl Sagan If we dont become Space faring, We become extinct. Thats a pretty good cause if you ask me. And as for PETA, any group with links to City of charlotte job vacancy postings organisations, and that advocates violence and arson against people because of animals has their prioritys a City of charlotte job vacancy postings out of whack in my opinion. For the record I have campaigned PEACEFULLY for the abolition of cosmetics testing on animals and I own a cat! As with space vehicles, heating would be as much of a problem, maybe even over the short term. Any moisture would flash boil off, at which point youd stop cooling entirely. Heating, however, would continue at the same rate. And what does this have to do with Anna Gosline being or not being an astrophysicist? Get City of charlotte job vacancy postings coverage delivered to your inbox. Mind Matters Jan 24, 2012 38 Features Jan 27, 2012 8 Reuters Jan 23, 2012 59 The Network Central Jan 28, 2012 The Network Central Jan 27, 2012 The Network Central Jan 25, 2012 ScientificAmerican Jan 25, 2012 Budding Scientist Jan 25, 2012 YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription. Scientific American is a trademark of Scientific American, Inc. , City of charlotte job vacancy postings with permission Vacuum chucking be aware of City of charlotte job vacancy postings problems! If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

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When it comes to exposure to the interstellar medium, you might survive it with timely help but it probably wont be to your taste. What are Anna Australia adelaide professional engineer vacancies s credentials as an astrophysicist?! Nothing is cited I remember reading a short story from the great Arthur C Clarke about the Vacuum breathers club dating from 50s, It seems once more the guy proves himself a true After a little googling it seems the story is available in the compilation After a little more Googling here is an article from 18 months ago saying much the same thing, but including a nasty account of a tragic soviet miss-hap not mentioned in this article. The treatment of those animals disgusts me, its not right. It was a shame for the animals involved for sure, but it was over 40 years ago, so the term is It wasnt right as apposed to its not right. Remember we have also lost 32 Australia adelaide professional engineer vacancies in the exploration of space, Its a risky business, but if we want to become space faring then sacrifices must be made. Id rather we sacrificed a few animals if it can help us gain the knowledge necessary develop treatment to help victims of accidents in the future. How unbelievably cruel. seriously science or not is there no decency in the people who perform these experiments? I think I am going to be ill. : Traveling to space already encompasses grave risk. Most likely if something mechanically malfunctions the likely hood of survival is non existent. In that regard there is no point in studying what happens to dogs and chimpanzees. The idea is to make efficient suits that are not naive to human flaw. Admittedly, I got freaked by the animal experiments part, but it was quite informative. I love my animals and take spiders outside when I find them indoors. If I am ever cast indoor space untethered, its nice to know Ill be unconscious so quickly that it wont hurt. This is a pretty dumb article because it completely ignores the fact temperatures in space range from extremely cold 200 below to 200 above even just outside Earths atmosphere. Even if the vacuum doesnt pose a grave threat, being exposed to extremely cold temperatures for as little a few seconds could kill anyone. Vacuum hasnt really got a functional temperature. Remember what a thermos bottle is? A vacuum doesnt conduct kinetic energy, which is what heat is. Which is why the big problem with space suits is overheating, not freezing. Vacuum has particles that are moving at extremely high speed, so technically the temperature is very high. But a collection of atoms will probably be near absolute zero after a while. So space is hot. And cold. A person being decompressed into a vacuum loses heat only by radiation and evaporative cooling of water from membranes. Most of the body will stay warm for quite a while. Is the humane society aware of these animal experiments? Knowledge is important, I know, but at the cost of the suffering and death of other intelligent living things? What scumbags would torture animals the way they did in the 60 s is beyond me. Thanks to PETA and many other watchdog groups, government and industry get away with much less animal abuse these days. However, it would be okay with me if Australia adelaide professional engineer vacancies and members of his administration were used for testing purposes. Lower life forms are less sensitive to pain. It s pretty disgusting how lowlifes used to get away with torturing animals in the name of science without any public outcry. Thankfully, we now have PETA and many other watchdog organizations so they now get away with much less. University labs are still among the worst offenders and do many despicable things in secret. The University Of North Carolina, John Hopkins, University of Colorado, Palmer Chiropractic, and Columbia University are a few that come to mind that still perform experiments that can only be described as torture.

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A shove out of the air lock by a mutinous lieutenant or a vicious rip in a space suit, and your average movie victim is guaranteed to die quickly and quietly, though Foxridge va vacancy fewer exploding body parts than screenwriters might have you Foxridge va vacancy In reality, however, animal experiments and human accidents have shown that people can Foxridge va vacancy survive exposure to vacuum conditions for at least a couple of minutes. Not that you would remain conscious long enough to rescue yourself, but if your predicament was accidental, there could be time for fellow crew members to rescue and repressurize you with few ill effects. In any system, there is always the possibility of equipment failure leading to injury or death. Thats just the risk you run when you are in a hostile environment and you Foxridge va vacancy upon the equipment around you, says Dartmouth Medical School professor and former NASA astronaut Jay Buckey, author of the 2006 book Space Physiology. But if you can get to someone quickly, that is good. Often spacewalks are done with two spacewalkers and there is continuous communication. So if someone is having a problem, hopefully the other can go get them and bring them in. Vacuums are indeed lethal: Foxridge va vacancy extremely low pressure air trapped in the lungs expands, tearing the tender gas-exchange tissues. This is especially grave if you are holding your breath or inhaling deeply when the pressure drops. Water in the soft tissues of your body vaporizes, causing gross swelling, though the tight seal of your skin would prevent you from actually bursting apart. Your eyes, likewise, would refrain from exploding, but continued escape of gas and water vapor leads to rapid cooling of the mouth and airways. Water and dissolved gas in the blood forms bubbles in the Foxridge va vacancy veins, which travel throughout the circulatory system and block blood flow. After about one minute Foxridge va vacancy effectively stops. The lack of oxygen to the brain renders you unconscious in Foxridge va vacancy than 15 seconds, eventually killing you. When the pressure gets very low there is just not enough oxygen. That is really the first and most important concern, Buckey says. But death is not instantaneous. For example, one 1965 study by researchers at the Brooks Air Force Base in Texas showed that dogs exposed to near vacuum one three-hundred-eightieth of atmospheric Foxridge va vacancy at sea level for up to 90 seconds always survived. During their exposure, they were Foxridge va vacancy and paralyzed. Gas expelled Foxridge va vacancy their Foxridge va vacancy and stomachs caused simultaneous defecation, projectile vomiting and urination. They suffered massive seizures. Their tongues were often coated in ice and the Foxridge va vacancy swelled to resemble an inflated goatskin bag, the authors wrote. But after slight repressurization the dogs shrank back down, began to breathe, and after 10 to 15 minutes at sea level pressure, they managed to walk, though it took a few more minutes for their apparent blindness to wear off. However, dogs held at near vacuum for just a little bit longer two full minutes or more died frequently. If the heart was not still beating upon recompression, they could not be revived and the more rapid the decompression was, the graver the injuries no matter how much time had elapsed in the vacuum. Chimpanzees can withstand even longer exposures. In a pair of papers from NASA in 1965 and 1967, researchers found that chimpanzees could survive up to 5 minutes in near Foxridge va vacancy conditions with no apparent cognitive defects, as measured by complex tasks months later. One chimp that was exposed for three minutes, however, showed lasting behavioral Foxridge va vacancy Another died shortly after exposure, Foxridge va vacancy due to cardiac arrest. Although the Foxridge va vacancy of knowledge on the effects of vacuum exposure comes from animal studies, there have also been several informative and scary depressurization accidents Foxridge va vacancy people. For example, in 1965 a technician inside a vacuum chamber at Johnson Space Center in Houston accidentally depressurized his space suit by disrupting a hose. After 12 to 15 seconds he lost consciousness. He regained it at 27 seconds, Foxridge va vacancy his suit was repressurized to about half that of sea level. The man reported that his last memory before blacking out was of the moisture on his tongue beginning to boil as well as a loss of taste sensation that lingered for four days following the accident, but he was otherwise unharmed.

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People should know how their tax money is spent on such terrible procedures. A really sad but true fact is that some knowledge must be won by suffering from innocent beings, as an example, nowdays we use information on hypothermia gained by Natzi scientists by dumping prisioners on icy water and finding the changes that their metabolism suffered, that information nowdays saves people everywhere where extreme cold exposure comes in play. I believe it is up to us to honor the memory of people and creatures involved in this experimets by not putting it all in a black and white perspective. I remember well how animals used to be used as subjects for really disgusting studies that were truly unnecessary for science. One can argue that it is necessary to test animals in the vacuum of space as a means of safety for an astronaut but in reality, this is We know that a vacuum will kill you in a few it is a no brainer. An astronaut in trouble will be saved as fast as possible which may or may not be fast enough but no one will be watching the clock in the saving. If the person survives well and good and if not, having wiped out horridly dogs and chimps would have taught us Nada. Sacrificing animals for AIDS research or cancer research is a whole different paradigm and is necessary an engineering issue is most Nice Valentine. Sometimes animal models have to be used, but they should be used sparingly. In the cases discussed here the only motive I see is idle curiosity, something along the lines of, Do babies feel pain? Lets hurt one and find out. Folks, It was 40 years ago. Most of the tax payers that paid for these experiments are now dead. In those days we had no Idea what would happen to Humans in a vacuum. Many lives both human and animal have been lost in the attempt to conquer Space. To missquote Carl Sagan If we dont become Space faring, We become extinct. Thats a pretty good cause if you ask me. And as for PETA, any group with links to terrorist organisations, and that advocates violence and arson against people because of animals has their prioritys a little out of whack in my opinion. For the record I have campaigned PEACEFULLY for the abolition of cosmetics testing on animals and I own a cat! As with space vehicles, heating would be as much of a problem, maybe even over the short term. Any moisture would flash boil off, at which point youd stop cooling entirely. Heating, however, would continue at the same rate. And what does this have to do with Anna Gosline being or not being an astrophysicist? Get weekly coverage delivered to your inbox. Mind Matters Jan 24, 2012 68 The Network Central Feb 3, 2012 The Network Central Feb 2, 2012 A Blog Around The Clock Feb 2, 2012 The Network Central Feb 1, 2012 Life, Unbounded 50 minutes ago Life, Unbounded 2 hours ago YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription. Scientific American is a trademark of Scientific American, Inc. , used with permission But dont linger in the interstellar vacuum, or hold your breath As far as certain death in a science fiction plot line goes, being ejected into the vacuum of space is more than a pretty sure thing.