Is this for standard crystals? I think people used to use "basic
beryllium acetate" for that application. A quick Google search got me
nowhere.
-Dan
On 4/1/19 2:07 PM, Alexandra Deaconescu wrote:
Hello,
Is anyone aware of a company that sells Beryllium chloride in the US?
Sigma does not ca
While working on PDB entries 1F0N and 1F0P, I aligned the side-chain
dipoles of 4 asparagines with the side-chain dipoles of tryptophans
(ring nitrogen is slightly negative, the rest of the 5-membered ring is
slightly positive). Aligning dipoles simultaneously optimized hydrogen
bonding for the
correction: www.hamiltoncompany.com
addition: The compression fittings at least used to be available from
us.vwr.com part number 89187-0002.
On 12/15/2014 11:48 AM, Daniel Anderson wrote:
Here's my addition to Jim Fairman's reply:
You could use a pair of RN compressio
Here's my addition to Jim Fairman's reply:
You could use a pair of RN compression fittings (www.hamilton dot com
part number 55751-01) and a segment of HPLC tubing. HPLC tubing within
my field of view can have an inside diameter as small as 0.005 inch.
hope that helps, Happy Merry, etc.,
Da
At hellma-analytics dot com, the closest match seems to be catalog
number 176-353-15-40, but, that's an HPLC flow cell.
Daniel Anderson wrote:
Hello, Gloria and everybody,
I'm typing most of this reply from memory.
When I tried to buy one, my recollection was that it was avail
Hello, Gloria and everybody,
I'm typing most of this reply from memory.
When I tried to buy one, my recollection was that it was available from
Hellma, but I couldn't (and still can't) find my Hellma paper catalog,
and for some reason I did not find the Hellma web site when I wanted to
buy a
Hi, Ho,
Your question has a lot of variables.
"HPLC" columns should not be used on the Akta within my field of view
because the Akta within my field of view does not have gradual pump
acceleration and deceleration. "HPLC" columns can be damaged by sudden
changes in pressure or composition.
In the Wyatt light scatter training class, they told us to set the
alignment parameters ONLY with a monodisperse peak, such as the monomer
peak from "monomeric BSA", formerly Sigma Chemical A-1900. The BSA
alignment parameters are then manually typed as inputs for the
scientifically interesting
The journal was Molecular Physics (1987) Vol 62(2), 451-459.
(my brain librates when I type)
Daniel Anderson wrote:
Maybe you should look at: "Rotation barriers in crystals from atomic
displacement parameters" Emily Maverick and Jack Dunitz (1987) Vol
62(2), 451-459.
They reporte
Maybe you should look at: "Rotation barriers in crystals from atomic
displacement parameters" Emily Maverick and Jack Dunitz (1987) Vol
62(2), 451-459.
They reported that the libration amplitude of one part of a crystalline
small molecule relative to another part is strongly correlated to bond
AVER DOMAIN 1 should be followed by ROTA MATRIX and TRAN. What does "NCS
2 1" do? Is that in the documentation? I never saw that before, and I
don't see it now in blah/ccp4-6.1.3/doc/dm.doc . If you intend to refine
the NCS matrices, the instructions for that should be on the same line
with "AV
The Fa" vector is always a 90 degree left turn from the Fa vector. For a
centrosymmetric heavy atom substructure such as 1 mercury site in P21,
the Fa" vector would point straight up or down.
hope that helps,
Citizen Dan
William Scott wrote:
Hi Citizens:
Try not to laugh.
I have an embar
Refinement with rigid-base TLS parameterization has been previously
explored:
Holbrook, Dickerson, Kim (1985) Acta Cryst B41, 255-262.
(the photocopy is located in the pile of dust that I maintain adjacent
to my desk)
Ethan Merritt wrote:
On Thursday 15 July 2010, Huw Jenkins wrote:
Hi,
(What is in the Hollywood district other than tourists looking for
"Hollywood"?)
I have a silly anecdote that does not answer Harry's question:
It must have been 1995 or 1996, the Beckman sales representative
appeared at my desk on a Friday afternoon without an appointment, but
carrying a bri
eliver maps with the wrong size.
Sincerely,
Filip Van Petegem
--
*******
Daniel Anderson, Ph.D.
Email: d...@mbi.ucla.edu
Phone: 310-206-3642 Fax: 310-206-3914
Howard Hughes Medical Institute at
University of California Los Angeles
Lab: Paul Boyer Hall Room
very deep, and the answer
depends strongly on the intended application.
--
***
Daniel Anderson, Ph.D.
Email: [EMAIL PROTECTED]
Phone: 310-206-3642 Fax: 310-206-3914
Howard Hughes Medical Institute at
University of California Los Angeles
Lab: Paul Boyer Hall Room 219
For US Postal Servi
COOT and CCP4mg ?
--
*******
Daniel Anderson, Ph.D.
Email: [EMAIL PROTECTED]
Phone: 310-206-3642 Fax: 310-206-3914
Howard Hughes Medical Institute at
University of California Los Angeles
Lab: Paul Boyer Hall Room 219
For US Postal Service and 2-dimensional, use:
Box 951662 MRL5-748
Los Angeles, CA 90095-1662
It still seems to me strange that Bio-Rad would build a machine that can
reach pressures suitable for reverse-phase chromatography, but then not
include software control for gradual pump acceleration. I tried to
communicate to BioRad corporate suits that many HPLC columns are too
fragile for abrupt
That was cryptic.
My point was that the BioRad pumps are very reliable given some basic
care. Its users quickly learn how to use it, as mentioned previously.
On Wed, 14 Feb 2007, Daniel Anderson wrote:
> My direct experience is with the old "HR" pumps, but my remarks apply t
My direct experience is with the old "HR" pumps, but my remarks apply to
the newer "DuoFlow".
On Day Zero, I disassemble the pump heads in the order specified in the
manual. I re-assemble with grease on the threads, thus preventing
expensive repairs due to corrosion of the bolts caused by salty bu
Are you sure that you want AKTA anything? They are so expensive.
We have had good service from the old style ("HR") Bio-Rad Bio-Logic
chromatography systems. The new ones are called "DuoFlow".
-Dan
On Tue, 13 Feb 2007, Frank Lee wrote:
>
> Dear all,
>
> I need to decide between buying an AKTA p
An IUCr nomenclature committee once recommended eradication of the
"B-factor". Trueblood, et al. Acta Cryst (1996) A52, 770-781.
Whether or not the factor of 8 pi squared can be eradicated,
the publication is worth reading because it discusses what is modeled
by Ueq (times 8 pi squared = B), and it
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