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#31
10-31-2007, 12:05 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
If you do it right, you don't even need a quake to see cool things with liquid helium. It'll crawl up the sides of the container it's sitting in and run down the sides as if it was defying gravity if you do it right.
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#32
10-31-2007, 12:10 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
[ QUOTE ]
Aaron- In addition to the other approaches you are considering you might want to consider backing away temporarily from trying to maximize small edge opportunities that bring variance to the table with them. At least until you rebuild your bankroll. You've got all the moves and I'm sure you know what I mean. Get a little more nitty in the close situations and grind it out till you are back up a little more. [/ QUOTE ] Once you go LAG, it's hard to go back. But yeah, that's also an option... I guess...
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#33
10-31-2007, 12:22 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
[ QUOTE ]
[ QUOTE ] Palo Alto, you try shimming an NMR when not even the room in cooperation [img]/images/graemlins/laugh.gif[/img] [/ QUOTE ] Hmm didn't know that... private lab or Uni? [/ QUOTE ] ya srsly. I'm guessing biotech company of some sort.
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#34
10-31-2007, 12:31 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
[ QUOTE ]
If you do it right, you don't even need a quake to see cool things with liquid helium. It'll crawl up the sides of the container it's sitting in and run down the sides as if it was defying gravity if you do it right. [/ QUOTE ] Yea, helium is funky. In NMR machines its used to cool the magnet because one needs a superconducting magnet to reach the fields for high-field NMR. The helium chamber is in turn surrounded by a chamber containing liquid nitrogen to keep it from evaporating to fast. So when one of them falls over there will be like 100l+ of liquid gas reaching room temperature in a few seconds in a formally closed vessel -> boom -> Xylocain gets frozen to -78 and suffocates -> No more spewmonkey at PS 0.5/1 The gases obv have to be 'open' to air in normal operation because liquid helium is only -270 at atomsphere pressure. If I pop down there and put a stopper in each machine we will need a new NMR facility tomorrow LDO [img]/images/graemlins/laugh.gif[/img] BTW In very advanced machines >800 MHz one actually uses small pumps to drive off helium to cool the magnet even further. -> more mobnies faster!
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#36
10-31-2007, 12:40 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
[ QUOTE ]
[ QUOTE ] If you do it right, you don't even need a quake to see cool things with liquid helium. It'll crawl up the sides of the container it's sitting in and run down the sides as if it was defying gravity if you do it right. [/ QUOTE ] Yea, helium is funky. In NMR machines its used to cool the magnet because one needs a superconducting magnet to reach the fields for high-field NMR. The helium chamber is in turn surrounded by a chamber containing liquid nitrogen to keep it from evaporating to fast. So when one of them falls over there will be like 100l+ of liquid gas reaching room temperature in a few seconds in a formally closed vessel -> boom -> Xylocain gets frozen to -78 and suffocates -> No more spewmonkey at PS 0.5/1 The gases obv have to be 'open' to air in normal operation because liquid helium is only -270 at atomsphere pressure. If I pop down there and put a stopper in each machine we will need a new NMR facility tomorrow LDO [img]/images/graemlins/laugh.gif[/img] BTW In very advanced machines >800 MHz one actually uses small pumps to drive off helium to cool the magnet even further. -> more mobnies faster! [/ QUOTE ] I guess in all the superconducting magnet systems I've worked with, they've had the helium compressor siphoning off the gaseous He and recondensing it. Considering the cost of liquid helium, it seems that the compressor pays for itself many times over in not much time.
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#37
10-31-2007, 01:22 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
Well, back from my elk hunting trip with nothing to show for it except a sliced thumb (tried to take it off with a Buck knife) and a nice peel going from a bad sunburn. Still a great trip and I hope to have some pictures and a TR in the not too distant future.
Meanwhile I'm hoping tyler's family and anyone else in the SD area got through the fires safely. I only found out about them on Tuesday when I came down the mountain for a few hours to resupply and my wife was having a mini-breakdown when I called. Then I was back out of civilization again until Sunday.
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#40
10-31-2007, 03:19 AM
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Re: Don\'t come home until u is sobern! (NC Thread)
[ QUOTE ]
I wsa going to bump the last NC thread for 1 final ban, but it was locked. I guess people won't be getting banned anymore. [/ QUOTE ] LOL cya in 12 hours!
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