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Topic: NMR

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In the News (Tue 19 Mar 19)

  NMR: Information to Trust
NMR benchmark groups and 5 new KPIs now available in Herd Companion!
Herd Companion is an on-line management tool for herd fertility and health and we are pleased to announce the launch of 11 new NMR benchmark groups and 5 new KPI parameters...
NMR's versatile and highly accalaimed software for a PDA is now available to link with Interherd and ImpelPro.
www.nmr.co.uk   (302 words)

  Nuclear magnetic resonance - Wikipedia, the free encyclopedia
NMR studies a magnetic nucleus, like that of a hydrogen atom, by aligning it with an external magnetic field and perturbing this alignment using an electromagnetic field.
The sensitivity of NMR signals is also dependent, as noted above, on the presence of a magnetically-susceptible nuclide, and therefore either on the natural abundance of such nuclides, or on the ability of the experimentalist to artificially enrich the molecules under study with such nuclides.
A relatively recent example of NMR being used in the determination of a structure is that of buckminsterfullerene.
en.wikipedia.org /wiki/Nuclear_magnetic_resonance   (3839 words)

 Nuclear magnetic resonance - Wikipedia, the free encyclopedia
NMR spectroscopy is one of the principal techniques used to obtain physical, chemical, electronic and structural information about a molecule.
NMR was first described independently by Felix Bloch and Edward Mills Purcell in 1946, (both of whom shared the Nobel Prize in physics in 1952 for their discovery).
The development of NMR as a technique of analytical chemistry and biochemistry parallels the development of electromagnetic technology and its introduction into civilian use.
en.wikipedia.org /wiki/NMR   (3839 words)

 NMR Spectroscopy
Nmr spectroscopy is therefore the energetically mildest probe used to examine the structure of molecules.
The magnitude or intensity of nmr resonance signals is displayed along the vertical axis of a spectrum, and is proportional to the molar concentration of the sample.
C nmr spectroscopy is the use of high-field pulse technology coupled with broad-band heteronuclear decoupling of all protons.
www.cem.msu.edu /~reusch/VirtualText/Spectrpy/nmr/nmr1.htm   (5986 words)

 NMR Group Bijvoet Center Utrecht
The theoretical course is concerned with the quantum mechanical basis of NMR spectroscopy and is concluded with an examination.
X-ray crystallography and NMR spectroscopy are widely used to determine the structure of molecules up to the level of complex biological macromolecules such as proteins.
The NMR practical course gives an introduction to the methods of modern NMR spectroscopy (Nuclear Magnetic Resonance, kernspin resonantie) and of molecular modelling as used for the studies of biomolecules.
www.nmr.chem.uu.nl /Education.html   (1499 words)

 [No title]
B NMR chemical shifts is a selected compilation of representative organoborane and boron compounds that we believe would be of interest to the organoborane community and to my research group at San Diego State University.
There are a variety of types of borane compounds that are absent from this compilation, including the carboranes, metal complexes, etc. While we have made a reasonable effort to ensure the accuracy of this data, errors are probably inevitable.
B NMR spectra generally shows a B-H coupling, unless there is a fast exchange of the hydrogens on the NMR time scale.
www.chemistry.sdsu.edu /research/BNMR   (1095 words)

 NMR Spectroscopy - Theory
It is important to remember that, with NMR, we are performing experiments on the nuclei of atoms, not the electrons.
Nuclei in an NMR experiment are in a sample.
You should now be familiar with the basic principles of NMR spectroscopy, such as the splitting of nuclear energy levels in a magnetic field and how a transition between the levels can be induced.
www.shu.ac.uk /schools/sci/chem/tutorials/molspec/nmr1.htm   (1675 words)

 CABM NMR Software Page
NMR, 1995, 277-293) are automatically generated based on Pulse Sequence-dependent and Spectrometer-dependent information found in the tables.
Modern protein NMR spectroscopy laboratories have a rapidly growing need for an easily queried local archival system of raw experimental NMR datasets.
SPINS (Standardized ProteIn Nmr Storage) is an object-oriented relational database that provides facilities for high-volume NMR data archival, organization of analyses, and dissemination of results to the public domain by automatic preparation of the header files required for submission of data to the BioMagResBank (BMRB).
www-nmr.cabm.rutgers.edu /NMRsoftware/nmr_software.html   (1240 words)

 NMR & X-ray crystallography glossary
Because of the strength of NMR in studying protein structure and function, NMR techniques are receiving renewed interest in pressure studies of proteins.
Two methods are available for NMR studies at high pressure; one employs a thick wall NMR sample tube inside a commercial NMR probe and the other utilizes a dedicated NMR probe with sample and detection coils enclosed within an external pressure vessel.
NMR strategy in which the tube is rotated at very high speed and at a specific angle which cancels out the line broadening effects of inhomogeneities in the sample.
www.genomicglossaries.com /content/nmr_email.asp   (5585 words)

 Nuclear Magnetic Resonance Research (NMR)
At present, NMR spectroscopy is the only technique that can provide detailed solution structure of small proteins and polynucleotides.
The NMR experiment, when performed in a magnetic field with a controlled gradient, provides spatial distribution of observed spins, i.e.
The facility is staffed by experts in various fields of NMR experimentation who carry out core research and development, and spend part of their time consulting with and training users.
mayoresearch.mayo.edu /mayo/research/nmr   (419 words)

 Welcome to Acorn NMR
and operates an NMR spectroscopy service in Livermore, CA (in the San Francisco Bay area; see map).
This is a new "port" to OSX, under development.
General interest NMR topics, including shimming, probes, 2D experiments, baselines, filters, oversampling, copying spectra for pasting, and more.
rd.business.com /index.asp?epm=s.1&bdcq=NMR&bdcr=5&bdcu=http://www.acornnmr.com/&bdcp=&partner=2662601&bdcs=nwuuid-2662601-1F50A8CC-F53A-D5D6-D13B-ED85EB77E585-ym   (91 words)

 Dangers of NMR Magnet Quenches   (Site not responding. Last check: 2007-10-18)
The NMR Laboratory at SIUC is approximately 7m x 8m x 3m to the suspended ceiling, thus having an approximate volume of 168,000 liters.
To reduce the oxygen content of the room from 21% to 19.5% would require displacing 2520 L oxygen with gaseous helium.
The University of Cambridge also has a nice page of Safety Information for their NMR Facility.
opie.nmr.siu.edu /quenches.html   (582 words)

 NMR Software
XWIN Plot™ is an interactive graphical plot editor, which facilitates the manipulation of plot layouts directly on the display so that the user can quickly tailor the results.
NMR SIM™ is a spin dynamics simulation program which utilizes the standard 1D and 3D pulse sequences or appropriately modifies sequences to create a set of theoretical FIDs for user-defined spin systems.
Icon NMR™ utilizes an intuitive symbol and menu based operation mode, featuring a high level of automation to simplify the setup and execution of a range of NMR experiments.
www.bruker-biospin.com /nmr/products/software.html   (339 words)

 Open Directory - Science: Chemistry: Nuclear Magnetic Resonance   (Site not responding. Last check: 2007-10-18)
Calculator for NMR experiments - Calculate power levels versus pulse widths, temperature versus chemical shift, calculate coupling constants versus time for various delays and pulse length versus field stregth.
NMR - Link Lists - NUmerous links to NMR sites; educational as well as informative links are listed.
NMR Meets Musicians - Auditory presentation of Free Induction Decay (FID) signals generated by NMR spectrometers.
dmoz.org /Science/Chemistry/Nuclear_Magnetic_Resonance   (382 words)

 ACD/1D NMR Expert Software for High Throughput Processing and Anlaysis   (Site not responding. Last check: 2007-10-18)
Formerly known as ACD/Combi NMR, ACD/1D NMR Expert is a software tool that offers high-throughput processing, verification, and quantitation of 1D NMR data.
Because samples are submitted at a much higher rate than they can be analyzed and interpreted, specialized tools are required to ensure fast and efficient data processing, and also to assist in interpretation.
ACD/1D NMR Expert is an ideal tool for NMR spectroscopists who are required to process, analyze, and verify large amounts of NMR data.
www.acdlabs.com /products/spec_lab/complex_tasks/combinmr   (160 words)

 NMR Isotope Editing Using Gradient BIRDs   (Site not responding. Last check: 2007-10-18)
The gradient-BIRD, or G-BIRD pulse sequence is a way to edit, for example, NMR spectra so that only the 1% of the molecules containing a carbon-13 nucleus give a response.
The method uses a double pulsed field gradient spin echo (DPFGSE) in which the "refocusing" element is a BIRD sequence.
You can also see an example of the suppression that can be obtained in an HMQC experiment, using DPFGSE-HMQC.
chem.ps.uci.edu /~ajshaka/gbird.html   (191 words)

 NMR - Used Surplus Equipment
NMR Associates a full service NMR company is offering the following NMR/MRI magnet system 400Mhz 89mm magnet system.
Bruker 3 mm NMR MicroCryoprobe with 500 MHz Dual Inverse 1H 13C S/N 1101/004, manufacture date is 2002, cryoplatform assemble s/n 2001-18 with all necessary chillers and accessories.
Varian Unity 500 MHz NMR: 2001 Oxford magnet with type 4FB cryostat with 51mm room temperature bore, cryostat stand, liquid helium transfer tube, cryostat ancillary items, 3 channel broadband console with VNMR software v6.1A on CD-ROM with...
www.labx.com /v2/newad.cfm?adclass=NMR   (561 words)

 NMR Index   (Site not responding. Last check: 2007-10-18)
The JCAMP-DX working group meeting, held in Germany in September 1998, reiterated that the published specifications for NMR require spectra to be stored in Hz even though they are usually displayed in PPM.
Some interpreted NMR spectra (1H and 13C) have been produced as part of a demo to show how CHIME 2 can be used to display both spectrum and molecular display and establish links between the two.
MestRe-C NMR software will read and write NUTS and JCAMP-DX files and is useful for converting from proprietary instrument manufacturer file formats to NUTS or JCAMP-DX files.
wwwchem.uwimona.edu.jm:1104 /spectra/NMRIndex.html   (510 words)

 NMR Operating Procedures
Call for instructions using the telephone or pager numbers at the bottom of the page.
You must be certified by the NMR facilities manager to independently operate the spectrometers.
You are NOT allowed to touch the probe, connect or disconnect any electronic cables.
nmr-central.chem.uh.edu /operate_qe300.html   (950 words)

 NMR Links
Course Materials for NMR Relaxation and Dynamics (Palmer)
Small Molecules are Still Hot NMR Conference (SMASH)
The University of Minnesota is an equal opportunity educator and employer.
www1.umn.edu /nmr/other.html   (109 words)

 Acorn NMR Spectroscopy Service   (Site not responding. Last check: 2007-10-18)
Because QA requirements vary, GLP/GMP work must be arranged in advance.
Please contact Acorn NMR to discuss your GLP/GMP needs.
Example of a complete NMR analysis, including 2D experiments, using codeine
www.acornnmr.com /nmr_serv.htm   (51 words)

 Chemistry Resources Links   (Site not responding. Last check: 2007-10-18)
With I-Lab access, you can obtain NMR spectra, get systematic names and predict properties such as pKa or LogP for their chemical structures from both your Internet browser and from inside ChemSketch, the most powerful structure drawing tool that can be downloadedfrom our Web site for free
WebSpectra (H NMR and 13C NMR, DEPT, COSY and IR)
Application of 1D and 2D 1H NMR Spectroscopy to the Conformational Analysis of Small molecules, Oligonucleotides and Proteins.
matematicas.udea.edu.co /~carlopez/index2a.html   (1651 words)

 NMR for organic chemists
Overview of the NMR parameters of the individual elements.
Input the 1H NMR chemical shift of a signal and the program gives some possible substructures for this shift.
ACD/HNMR generates spectral Proton NMR plots with exact line numbers, intensities, locations and assignments.
www.organicworldwide.net /nmr.html   (125 words)

 Public Archive (NMR) : Learning & Resources : English Heritage   (Site not responding. Last check: 2007-10-18)
As well as our search room in Swindon where you can browse a huge collection of photographs and historic resources, the National Monuments Record (NMR) also provides many specialist services such as Developing Standards and Partnership Projects to help you find the resources you need.
These materials may be consulted in the NMR's offices: they are not available on-line.
The NMR offers education as part of the wider English Heritage education service.
www.english-heritage.org.uk /nmr   (128 words)

 NMR Program - Archive of Official Documents   (Site not responding. Last check: 2007-10-18)
Report prepared by the committee for "High Field NMR: A New Millennium Resource".
A report by the committee for High Field NMR: A New Millenium Resource.
— Archive of NMR related reports, press releases, and other more or less official documents.
nmr.magnet.fsu.edu /resources/archive/archive.htm   (197 words)

 nmr   (Site not responding. Last check: 2007-10-18)
This course provides a graduate level introduction to the use of modern multi-dimensional NMR techniques to the study of the structure and dynamics of biological polymers.
The intent of this course is to give the student a working knowledge of the applications of modern multi-dimensional NMR in Biology and Chemistry.
Nov 11(R) Practical Aspects of Acquiring and Processing 2D/3D NMR Data
stingray.bio.cmu.edu /~web/nmr/index_nmr.html   (236 words)

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