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OpenCore NMR comments
Takeda has a site for his [url=http://kuchem.kyoto-u.ac.jp/bun/indiv/takezo/opencorenmr/index.html]O ... |
26-9-2010 at 08:46
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
Chemical shift describes how much a particular nucleus' magnetic
precessional frequency (or Larmor ... |
25-9-2010 at 21:36
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
A byte is still a byte irrespective of the processor's word granularity.
645Hz is the 15ppm chemi ... |
25-9-2010 at 19:06
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[quote]The amount of binary data that can be stored in 32K of memory is HUGE[/quote]
10 or 12 bit e ... |
25-9-2010 at 17:37
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[b]Pay Dirt![/b]
The MIT junior level physics experiments include a benchtop 10MHz NMR
spin rela ... |
25-9-2010 at 16:07
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[quote]And although it's not fully fair, the new Arduino UNO came out yesterday, replacing the old F ... |
25-9-2010 at 13:08
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[rquote=188297&tid=14365&author=watson.fawkes]Standard Arduino will do SPI at either 2 MHz o ... |
25-9-2010 at 11:38
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[b]@12AX7[/b]
I agree that the johnson noise for a 500Hz window is quite low,
but neither the init ... |
25-9-2010 at 10:22
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[rquote=188193&tid=14365&author=un0me2]Ok, well for the home-hobbyist, we really don't want ... |
24-9-2010 at 10:58
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[rquote=188125&tid=14365&author=12AX7]Can't be too bad. The FCC would shit themselves if th ... |
23-9-2010 at 13:13
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[rquote=188089&tid=14365&author=un0me2]The biggest difficulty I am having is the amount of p ... |
23-9-2010 at 08:38
by: arsphenamine |
NMR process control thots
As an unregenerate embedded systems geek, I've given the controller some thought.
A 10 bit ADC ge ... |
22-9-2010 at 12:58
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[b]Filtering a downconverted FID:[/b]
I had in mind a low-pass filter since you [b]want to see the ... |
22-9-2010 at 08:55
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[rquote=188009&tid=14365&author=un0me2]
But I'm interested in how the SoundCard (and Direct ... |
21-9-2010 at 20:53
by: arsphenamine |
Stelter Magnet array
Stelter arrays are a simplified derivative of Hallbach arrays, and are
described in US patent 5,635 ... |
21-9-2010 at 16:15
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
[rquote=187935&tid=14365&author=12AX7]
And under much more reasonable circumstances, like a ... |
21-9-2010 at 07:37
by: arsphenamine |
Yet More NMR history
The history of NMR is also the history of Varian Associates.
This draws from Stan's NMR blog at htt ... |
20-9-2010 at 18:34
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
Texas A&M magnetic resonance lab made a DIY MRI for 1 cu.in. samples
in a 0.22T field == ~9.3MH ... |
20-9-2010 at 10:31
by: arsphenamine |
Nitromethane, nitroethane, nitropropane synthesis via industrial route
[rquote=182245&tid=13633&author=zed]IF Shulgins procedure for de-constructing the B-Nitro- ... |
19-9-2010 at 17:10
by: arsphenamine |
$9k USD
I wondered what acquiring a "cheep" NMR system would involve, before
and after purchase. In summary ... |
19-9-2010 at 12:07
by: arsphenamine |
Capsaicin extraction and isolation
Within the wikipedia entry,
http://en.wikipedia.org/wiki/Capsaicin
...They list 6 capsaicinoids, ... |
17-9-2010 at 09:02
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
My point was that an incautiously designed EM shield distorts
the magnet field homogeneity because ... |
17-9-2010 at 08:06
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
The magnetic field can induce eddy currents in adjacent shielding.
It may be more useful to shiel ... |
16-9-2010 at 23:47
by: arsphenamine |
do-it-yourself nuclear magnetic resonance spectroscopy
Historical notes:
The first production NMR for chemists was the swept scan Varian A-60.
My univers ... |
16-9-2010 at 16:37
by: arsphenamine |
Why, indeed.
The money shot:
A spinning band column permits separation of compounds with close boiling points. ... |
14-9-2010 at 13:36
by: arsphenamine |
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