Results 211 to 220 of about 15,088 (259)

SWCN characterization by neutron diffraction

Physica B: Condensed Matter, 2004
Single-wall carbon nanotube structure has been investigated by neutron diffraction using the SANDALS time of flight diffractometer (at R.A.L.). The Q range of the detector allows for the determination of single the tube diameter, diameter distribution, and mean number of tubes in the bundle. Results are compared to theoretical predictions.
A Giannasi ab, M Celli, JL Sauvajol, M Zoppi, DT Bowron   +4 more
openaire   +4 more sources

Need for Neutron Diffraction Instruments

Science, 1999
The News Focus article by Robert F. Service “Wiggling and undulating out of an x-ray shortage” (27 Aug., p. [1342][1]) highlights the shortage of hard x-ray sources that has occurred after an explosion in demand from structural biologists. A greater shortage for U.S. structural biologists,
P, Langan, B P, Schoenborn
openaire   +2 more sources

Neutron diffraction of interphase nuclei

Journal of Molecular Biology, 1982
Abstract The neutron small-angle diffraction patterns obtained with native interphase nuclei are quite featureless and difficult to interpret. However, the difference between two patterns which have been obtained before and after having induced a change in the packing of the more stable structural entities, e.g.
openaire   +2 more sources

Neutron-diffraction study of liquid iodine

Physical Review A, 1991
Accurate neutron-diffraction measurements on saturated liquid iodine, up to Q=16 Å −1, at T=409 K are presented. The intermolecular structure factor has been derived and a study performed on the presence of orientational correlations and their contribution to the intensity distribution.
Andreani, Carla, Bellissent Funel, Marie Claire, Ricci, Francesco Paolo, RICCI, Maria Antonietta   +3 more
openaire   +3 more sources

Neutron Diffraction Analysis of Myoglobin

Nature, 1969
A preliminary analysis of myoglobin proves that neutron diffraction analysis of proteins is feasible and should reveal the position of fixed hydrogen atoms.
openaire   +2 more sources

Neutron diffraction studies of digalactosyldiacylglycerol

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1988
The structure of the digalactosyldiacylglycerol bilayer is calculated using neutron diffraction data. The polar head group of this lipid is oriented parallel to the plane of the bilayer such that the galactose moieties are tightly packed at the bilayer surface into a 0.8 nm thick polar layer. The thickness of this layer is independent of water activity
openaire   +2 more sources

Polarized neutrons and magnetic neutron diffraction

2009
Abstract Atoms such as iron, cobalt, manganese and nickel, in the first transition series of elements, have incomplete 3d electronic shells with unpaired electrons. These unpaired electrons give rise to a resultant magnetic moment, and the interaction of this atomic moment with the magnetic moment of the neutron gives rise to magnetic ...
B T M Willis, C J Carlile
openaire   +1 more source

Neutron Powder Diffraction and Oxide Superconductors

Materials Science Forum, 1990
Neutron powder diffraction has been essential for understanding the structures of the new high temperature oxide superconductors because of the difficulty in locating oxygen with X-rays in the presence of heavy metals, especially when single crystals are usually not available. This understanding lead to the discovery of new materials. In this paper we
openaire   +1 more source

Neutron Diffraction by Gases

Physical Review, 1956
Zemach, A. C., Glauber, R. J.
openaire   +2 more sources

Neutron Diffraction

Annual Review of Nuclear Science, 1961
M K Wilkinson, E O Wollan, W C Koehler
openaire   +1 more source