منابع مشابه
Tailored low-power cross-polarization under fast magic-angle spinning.
High static magnetic fields and very fast magic-angle spinning (MAS) promise to improve resolution and sensitivity of solid-state NMR experiments. The fast MAS regime has permitted the development of low-power cross-polarization schemes, such as second-order cross-polarization (SOCP), which prevent heat deposition in the sample. Those schemes are however limited in bandwidth, as weak radio-freq...
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Nanothread with a diameter as small as one hundred nanometers was manufactured under a scanning electron microscope. Made directly from carbon nanotubes, and inheriting their superior electrical and mechanical properties, nanothread may be the world's smallest man-made fiber. The smallest thread that can be spun using a bench-top spinning machine is about 5 microns in diameter. Nanothread is a ...
متن کاملSolid-state single-scan 2D NMR under magic-angle-spinning
Article history: Received 16 January 2008 In final form 15 May 2008 Available online 21 May 2008 0009-2614/$ see front matter 2008 Elsevier B.V. A doi:10.1016/j.cplett.2008.05.045 * Corresponding author. Fax: +972 8 9344123. E-mail address: [email protected] (L Few analytical techniques rival the capabilities of two-dimensional nuclear magnetic resonance. A scheme enabling 2D NMR acq...
متن کاملNMR correlation techniques under fast magic-angle spinning
The N· · ·H distance within the unusual hydrogen-bonding arrangement adopted by a pair of methylsubstituted benzoxazine dimers (C6H3(OH)2CH2)2N(CH3) has been determined by solid-state NMR to be 194 ± 5 pm. This indicates that the proton is shared between the nitrogen and oxygen atoms, with a preference for an O–H rather than an N–H bond character. It is to be noted that a previous X-ray single ...
متن کاملKnot spinning
This exposition is intended to provide some introduction to higher-dimensional knots embeddings of Sn−2 in S through spinning constructions. Once our shoe laces, those archetypical hand tools of knot theory, have been turned into spheres, how can we construct and visualize concrete examples of such knots? There are many important ways to construct higher-dimensional knots. If we are interested ...
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ژورنال
عنوان ژورنال: Tidsskrift for Den norske legeforening
سال: 2017
ISSN: 0029-2001
DOI: 10.4045/tidsskr.17.0177