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| 3. |
- Agui, A, et al.
(författare)
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Direct observation of interface effects of thin AlAs(100) layers buried in GaAs
- 2000
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Ingår i: APPLIED SURFACE SCIENCE. - : ELSEVIER SCIENCE BV. - 0169-4332. ; 166:1-4, s. 309-312
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Tidskriftsartikel (refereegranskat)abstract
- A study of the electronic structure of ultrathin AlAs layers buried in GaAs(100) and their interfaces is presented. Al L-2,L-3 soft-X-ray-emission (SXE) spectra from the AlAs layers were measured. The spectra show distinct thickness-dependent features, wh
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| 4. |
- ANDERSSON, CBM, et al.
(författare)
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SPUTTERED AND ANNEALED INAS(111)OVER-BAR - AN UNRECONSTRUCTED SURFACE
- 1994
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Ingår i: Surface Science. - : Elsevier BV. - 0039-6028 .- 1879-2758. ; 307, s. 885-889
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Tidskriftsartikel (refereegranskat)abstract
- The electronic structure of the InAs(111BAR)1 X 1 surface has been investigated by angle resolved photoelectron spectroscopy along the symmetry lines GAMMAKBAR, GAMMAMBAR, and GAMMAMBAR of the surface Brillouin zone. The bulk valence band structure was calculated using a combination of the linear augmented plane-wave method and the relativistic augmented plane-wave method. We have projected the theoretical bulk band structure onto the surface Brillouin zone to separate surface states from surface resonances. Two surface related structures, S1 and S2, have been observed and their E(i)(k(parallel-to)) dispersions are established. Both S1 and S2 show the symmetry of the 1 X 1 surface Brillouin zone, which is consistent with the observed 1 X 1 LEED pattern. We identify S1 as the As-derived dangling bond state, and S2 is associated with the backbonds connecting the As atoms in the surface layer with the underlying In layer.
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| 5. |
- Andersson, JLR, et al.
(författare)
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Regional cerebral blood flow and oxygen metabolism during migraine with and without aura
- 1997
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Ingår i: CEPHALALGIA. - : SCANDINAVIAN UNIVERSITY PRESS. - 0333-1024. ; 17:5, s. 570-579
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Eleven cases of migraine with and without aura were investigated with positron emission tomography (PET). Regional cerebral blood flow (rCBF), oxygen metabolism (rCMRO(2)) and oxygen extraction (rOER) were measured during baseline (n = 11), aura (n = 6),
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| 8. |
- Andersson, PO, et al.
(författare)
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From a local and closed to an international and virtual library: a case report
- 1997
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Ingår i: ELECTRONIC LIBRARY. - : Emerald. - 0264-0473. ; 15:6, s. 475-484
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- One of the main challenges faced by libraries is to present their services and holdings to patrons in a truly professional and user‐friendly way. The standard library software available does not usually adapt to new technology as quickly as library users and staff would like. However, such limitations need not be accepted. By thinking in terms of small‐scale, incremental development and by using general computer software, an ambitious library can create a technologically up‐to‐date information browsing instrument even though finances and resources are limited. This paper describes the strategic and technological steps involved in such a process.
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| 9. |
- Andersson, SK, et al.
(författare)
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Infrared properties of beta-sialon as a function of composition
- 1998
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Ingår i: OPTICAL MATERIALS. - : ELSEVIER SCIENCE BV. - 0925-3467. ; 10:1, s. 85-93
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Tidskriftsartikel (refereegranskat)abstract
- The infrared properties of beta-sialons, Si6-zAlzOzN8-z, prepared by hot, isostatic pressing for nine z-values, as well as a corresponding set of samples containing 1 wt% of yttria have been studied. The samples all have densities over 99% of their theore
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| 10. |
- Andersson, Staffan, et al.
(författare)
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Twenty-four-hour electrocardiography in a healthy elderly population
- 1988
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Ingår i: Gerontology. - : S. Karger AG. - 0304-324X .- 1423-0003. ; 34:3, s. 139-144
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Tidskriftsartikel (refereegranskat)abstract
- Twenty-four hour electrocardiography was performed in fifteen 73-year-old and seventeen 82-year-old subjects without known cardiovascular disease. They were selected from a representative population of elderly people. All subjects showed supraventricular premature beats. Supraventricular tachycardia was seen in 63%. Eighty-four percent showed ventricular premature beats (VPBs), and more than two VPB configuration types were seen in 23% of the subjects. Episodes of intermittent atrial flutter and fibrillation, higher-degree atrioventricular blocks and ventricular tachycardia were absent or rare.
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