| 1. |
- Jones, Ian S, et al.
(author)
-
Vehicle and driver factors in relation to crash involvement of heavy trucks
- 1990
-
In: Proceedings of Strategic Highway Research Program and Traffic Safety on Two Continents. Conference in Gothenburg, Sweden, September 27-29, 1989. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 87-114
-
Conference paper (other academic/artistic)
|
|
| 2. |
- BERTOLOTTO, L, et al.
(author)
-
RESULTS FROM (P)OVER-BAR-P-]PHI-PHI
- 1994
-
In: NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS. - : EDITRICE COMPOSITORI BOLOGNA. ; , s. 2329-2337
-
Conference paper (peer-reviewed)abstract
- The reaction ($) over bar pp --> phi phi is investigated in the JETSET (PS202) experiment using an internal target in LEAR. Data have been analysed at a variety of beam momenta from 1.2 GeV/c to 2.0 GeV/c, corresponding to centre-of-mass energies between
|
|
| 3. |
- Estreicher, S.K., et al.
(author)
-
Stable and metastable states of C60H: buckminsterfullerene monohydride
- 1992
-
In: Chemical Physics Letters. - 0009-2614 .- 1873-4448. ; 196:3-4, s. 311-316
-
Journal article (peer-reviewed)abstract
- Approximate ab initio Hartree-Fock and first-principles density functional calculations of potential energy surfaces and electronic structures of C60H show that the stable state has H attached to one C atom, outside the buckyball. This C atom is displaced radially outward and is close to being sp3 hybridized. The unpaired electron of C60H is delocalized. The calculated Fermi contact density at the proton is in good agreement with recent low-temperature μSR data. A metastable configuration has atomic H at the center of the ball (H@C60). Once trapped there, H must overcome a large barrier to go through the surface of C60. Other configurations we considered include H attached to one C atom but inside the buckyball, and H bridging one of the two inequivalent CC bonds. The barrier for diffusion of H from outside to the center of C60 have also been calculated. The results are compared to recent muon spin rotation studies in solid C60 and to the states of hydrogen in other forms of carbon.
|
|
| 4. |
- Holbech, J. D., et al.
(author)
-
H2* defect in crystalline silicon
- 1993
-
In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 71:6, s. 875-878
-
Journal article (peer-reviewed)abstract
- Detailed infrared studies have been carried out on proton- and deuteron-implanted Si. A dominant trigonal defect involving a pair of inequivalent hydrogen atoms has been identified, with local modes at 2061.5, 1838.3, 1599.1, and 817.2 cm-1. The structure, the local modes, and the isotopic shifts of the H2* defect have been calculated using ab initio pseudopotential cluster theory. The structure is consistent with channeling and uniaxial stress experiments. The calculated frequencies and isotopic shifts are in close agreement with those observed.
|
|
| 5. |
- I. Sinning, G.J. Kleywegt, S.W. Cowan, P. Reinemer, H.W. Dirr, R. Huber, G.L. Gilliland, R.N. Armstrong, X. Ji, P.G. Board, B. Olin, B. Mannervik & T.A. Jones
(author)
-
Structure determination and refinement of human alpha class glutathione transferase A1-1, and a comparison with the mu and pi class enzymes
- 1993
-
In: Journal of Molecular Biology. ; 232, s. 192-212
-
Journal article (peer-reviewed)
|
|
| 6. |
- Jones, R, et al.
(author)
-
Ab initio calculations of the structure and dynamics of C60 and C3- 60
- 1992
-
In: Philosophical Magazine Letters. - : Informa UK Limited. - 0950-0839 .- 1362-3036. ; 65:6, s. 291-298
-
Journal article (peer-reviewed)abstract
- A local-density-functional cluster method is used to calculate the structure and vibrational modes of C60. We find C–C lengths in good agreement with observed values. The effect of doping the molecule with three extra electrons is investigated and shown to result in a surprising shortening of the longer bonds. The second derivatives of the energy are evaluated and have enabled, for the first time, all the normal modes of the molecule to be found. We find these to be in fair agreement with the available experimental results.
|
|
| 7. |
- Liu, H.K., et al.
(author)
-
Cu valence states in superconducting BiPbSrCaCuO system
- 1990
-
In: Journal of Solid State Chemistry. - 0022-4596 .- 1095-726X. ; 87:2, s. 289-297
-
Journal article (peer-reviewed)abstract
- The oxidation states of Bi, Pb, and Cu in the BiPbSrCaCuO (BPSCCO) system have been determined by a combination of volumetric measurement technique and iodometric titration. It was found that, in contrast to previous reports, the concentration of the Cu3+ ions decreased with increasing Pb content, and Cu3+ ions were absent in samples of Bi1.6Pb0.4Sr1.6Ca2Cu3O9.8, while a Tc at 108 K and a Jc of greater than 12,000 A/cm2 at 77 K were observed. The 110 K phase in BPSCCO was stabilized and showed a high tolerance to change in oxygen partial pressure during sintering. In Pb-doped materials, Bi appears to be trivalent while Pb was determined to be mixed-valence Pb4+ Pb2+. It is suggested that superconductivity in BPSCCO may result from a dynamic transfer of holes from Bi PbO layers toward CuO2 planes
|
|
| 8. |
- Sinning, I, et al.
(author)
-
Structure determination and refinement of human alpha class glutathione transferase A1-1, and a comparison with the Mu and Pi class enzymes.
- 1993
-
In: J Mol Biol. - 0022-2836. ; 232:1, s. 192-212
-
Journal article (peer-reviewed)abstract
- The crystal structure of human alpha class glutathione transferase A1-1 has been determined and refined to a resolution of 2.6 A. There are two copies of the dimeric enzyme in the asymmetric unit. Each monomer is built from two domains. A bound inhibitor, S-benzyl-glutathione, is primarily associated with one of these domains via a network of hydrogen bonds and salt-links. In particular, the sulphur atom of the inhibitor forms a hydrogen bond to the hydroxyl group of Tyr9 and the guanido group of Arg15. The benzyl group of the inhibitor is completely buried in a hydrophobic pocket. The structure shows an overall similarity to the mu and pi class enzymes particularly in the glutathione-binding domain". The main difference concerns the extended C terminus of the alpha class enzyme which forms an extra alpha-helix that blocks one entrance to the active site and makes up part of the substrate binding site.
|
|
| 9. |
|
|
