Results 321 to 330 of about 1,557,777 (375)

Nuclear Magnetic Resonance of Hemoglobins

2003
Nuclear magnetic resonance (NMR) spectroscopy detects the interaction of radiofrequency (rf) radiation with the nuclear spins of molecules placed in an applied magnetic field. Because the spins are sensitive to their environment, and may be coupled to one another both through chemical bonds and through space, NMR can provide a wealth of information on ...
Jonathan A. Lukin, Chien Ho
openaire   +3 more sources

Experimental realization of Shor's quantum factoring algorithm using nuclear magnetic resonance

Nature, 2001
The number of steps any classical computer requires in order to find the prime factors of an l-digit integer N increases exponentially with l, at least using algorithms known at present. Factoring large integers is therefore conjectured to be intractable
L. Vandersypen, M. Steffen, G. Breyta, C. S. Yannoni, M. Sherwood, I. Chuang   +5 more
semanticscholar   +1 more source

Nuclear magnetic resonance spectroscopy.

Analytical Chemistry, 1990
Fundamental Principles. L.W. Jelinsky, Experimental Methods. The Chemical Shift. Coupling of Nuclear Spins. Nuclear Relaxation and Chemical Rate Processes. P.A. Mirau and F.A. Bovey, Two-Dimensional Nuclear Magnetic Resonance Spectroscopy. Macromolecules.
L. Jelinski
semanticscholar   +1 more source

A comparison of models for calculating nuclear magnetic resonance shielding tensors

, 1996
The direct (recomputation of two‐electron integrals) implementation of the gauge‐including atomic orbital (GIAO) and the CSGT (continuous set of gauge transformations) methods for calculating nuclear magnetic shielding tensors at both the Hartree‐Fock ...
J. Cheeseman, G. Trucks, T. Keith, M. Frisch   +3 more
semanticscholar   +1 more source

ChemInform Abstract: Nuclear Magnetic Resonance Imaging

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
openaire   +2 more sources

Reaction Rates by Nuclear Magnetic Resonance

, 1958
The Bloch equations for nuclear magnetic resonance are modified to describe the magnetic resonance of a single nuclear species X which is transferred back and forth between two (or more) magnetic environments (A,B) by kinetic molecular processes.
H. Mcconnell
semanticscholar   +1 more source

Nuclear Magnetic Resonance of Alkaloids

1975
Publisher Summary This chapter describes characteristic features of the nuclear magnetic resonance (NMR) spectra of alkaloids, illustrated by examples taken predominantly from papers published during the period January 1969–June 1972. In many of these papers, alkaloid structures have been assigned using NMR structure correlations established prior to
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Nuclear Magnetic Resonance

1988
The behavior of compass needles in the Earth’s magnetic field was introduced in Chapter 1 to present the concept of magnetic resonance. A compass needle is actually a small bar magnet which oscillates at a particular frequency when driven from its resting state.
William Oldendorf, William OldendorfJr.
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Application of nuclear magnetic resonance (NMR) in coalbed methane and shale reservoirs: A review

International Journal of Coal Geology, 2020
Zhengshuai Liu, Dameng Liu, Yidong Cai, Yanbin Yao, Z. Pan, Yingfang Zhou   +5 more
semanticscholar   +1 more source

Nuclear Magnetic Resonance

1974
The nuclei of many atoms constitute spinning charges, whose oscillating electric fields induce localized magnetic moments, which can be oriented in an applied magnetic field. Absorption of electromagnetic radiation of appropriate frequency (range 1–220 MHz) can raise the potential energy of the nuclei, forcing realignment of their magnetic moments in ...
Richard J. Winzler, Donald F. H. Wallach
openaire   +2 more sources