نتایج جستجو برای: nuclear magnetic resonance

تعداد نتایج: 613743  

1999
Ximing Fang Xiwen Zhu Mang Feng

Quantum dense coding has been demonstrated experimentally in terms of quantum logic gates and circuits in quantum computation and NMR technique. Two bits of information has been transmitted through manipulating one of the maximally entangled two-state quantum pair, which is completely consistent with the original ideal of Bennett-Wiesner proposal. Although information transmission happens betwe...

2013

Hydrogen is present (IbundanLly in biological tis~uc. Protons posse~s two fundamental physical properlie~, (i) spin (L) LInd (ii) a small magnetic movement ( 11). Therefore the ,Homic nuclei or hydrogcn behave like tiny spi nn ing magnets. Our eart h is al~o (l n examplt: of such a magnet ic spinning top. When they a re placed in a sIalic magnetic Ilcld (Fig. I), the nudcl align themselves para...

1999
G. Neyens N. Coulier S. Teughels G. Georgiev B. A. Brown W. F. Rogers D. L. Balabanski R. Coussement A. Lépine-Szily M. Lewitowicz W. Mittig F. de Oliveira Santos P. Roussel-Chomaz S. Ternier K. Vyvey D. Cortina-Gil

G. Neyens,1 N. Coulier,1 S. Teughels,1 G. Georgiev,1 B. A. Brown,2,3 W. F. Rogers,4 D. L. Balabanski,1,* R. Coussement,1 A. Lépine-Szily,5 M. Lewitowicz,6 W. Mittig,6 F. de Oliveira Santos,6 P. Roussel-Chomaz,6 S. Ternier,1 K. Vyvey,1 and D. Cortina-Gil7 1University of Leuven, Instituut voor Kern-en Stralingsfysika, Celestijnenlaan 200 D, B-3001 Leuven, Belgium 2Department of Physics and Astron...

2013

What we call “nuclear magnetic resonance” (NMR) was developed simultaneously but independently by Edward Purcell and Felix Bloch in 1946. The experimental method and theoretical interpretation they developed is now called “continuous-wave NMR” (CWNMR). A different experimental technique, called “pulsed NMR” (PNMR), was introduced in 1950 by Erwin Hahn. Pulsed NMR is used in magnetic resonance i...

2008
J. Mitchell Beau W. Webber J. H. Strange

Nuclear Magnetic Resonance (NMR) cryoporometry is a technique for non-destructively determining pore size distributions in porous media through the observation of the depressed melting point of a confined liquid. It is suitable for measuring pore diameters in the range 2 nm – 1 μm, depending on the absorbate. Whilst NMR cryoporometry is a pertabative measurement, the results are independent of ...

2006
Tokuko Watanabe

This review covers the progress in the field of NMR imaging (NMRI), NMR microimaging, NMR microscopy or MR (micro) tomography as well as MRI (Magnetic Resonance Imaging) over a period from June 2005 to may 2006 and is a continuation of the report from last year. The word ‘‘MRI’’ was used mostly in the medical or clinical field, but recently many authors in non-medical field uses ‘‘MRI’’ instead...

2012
Miguel Feliz Maria Antònia Molins Margarida Gairí Victòria Muñoz Teresa Gonzalez

This article reviews the principles and methods of nuclear magnetic resonance spectroscopy, and gives examples of applications carried out at our Facility, which illustrate the capabilities of the technique. Handbook of instrumental techniques from CCiTUB Nuclear Magnetic Resonance 1 ChT.4

2006
Pieter Zeeman

Pieter Zeeman observed in 1896 the splitting of optical spectral lines in the field of an electromagnet. Since then, the splitting of energy levels proportional to an external magnetic field has been called the "Zeeman effect". The "Zeeman resonance effect" causes magnetic resonances which are classified under radio frequency spectroscopy (rf spectroscopy). In these resonances, the transitions ...

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