| 1. |
- Brunsell, P., et al.
(författare)
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Extrap L-1 Experimental Stability
- 1990
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Ingår i: XVII European Conference on Controlled Fusion and Plasma Heating, Amsterdam, Netherlands, June 25-29, 1990. ; , s. 610-
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Konferensbidrag (refereegranskat)
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| 2. |
- Karlsson, Anders, et al.
(författare)
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Transient wave propagation in gyrotropic media
- 1992
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Ingår i: Invariant inbedding and inverse problems. - 0898713056 ; , s. 77-89
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- In this paper transient electromagnetic wave propagation in an inhomogeneous, cold plasma is considered. It is assumed that a constant magnetic induction is present and that the plasma is spatially inhomogeneous in the direction of the magnetic induction. Losses in the plasma are modeled with a collision frequency ν. The direct problem, which is to calculate the reflected and transmitted responses of the plasma, is considered in this paper. Special attention is paid to the precursor effects in the plasma and several examples of precursor effects in an inhomogeneous plasma are showed.
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| 3. |
- Karlsson, Anders, et al.
(författare)
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Wave splitting and imbedding equations for a spherically symmetric dispersive medium
- 1992
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Ingår i: Invariant inbedding and inverse problems. - 0898713056 ; , s. 103-113
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The direct problem of time dependent electromagnetic scattering in the dispersive sphere is solved by a wave splitting technique. The electric field is expanded in a series involving vector spherical harmonics, leading to a system of wave equations for each term. These systems are reduced to scalar wave equations for each term, which are solved via reflection operators. Some preliminary numerical results are presented.
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| 4. |
- Karlsson, BW, et al.
(författare)
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Prognosis in suspected acute myocardial infarction in relation to delay time between onset of symptoms and arrival in hospital
- 1991
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Ingår i: Cardiology. - : S. Karger AG. - 0008-6312 .- 1421-9751. ; 78:2, s. 131-137
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Tidskriftsartikel (refereegranskat)abstract
- During a 21-month period, the prognosis in all patients admitted to a hospital ward from the emergency room with suspected acute myocardial infarction (AMI) was prospectively recorded and related to the time between onset of symptoms and arrival in hospital. They were classified as early arrivers (less than or equal to 2 h), intermediate arrivers (2-8 h) and late arrivers (greater than 8 h). Among patients developing a confirmed AMI (n = 909) the 1-year mortality rate was 26.0% in early arrivers, 28.1% in intermediate arrivers and 32.6% in late arrivers. The corresponding figures for patients in whom AMI was ruled out (n = 2,035) were 15.2, 15.1 and 17.6%, respectively. In AMI patients, various morbidity aspects during hospitalization and 1 year of follow-up appeared mainly independent of delay time, whereas among those in whom AMI was ruled out congestive heart failure during hospitalization was most common in early arrivers. We conclude that patients with suspected AMI who do not arrive early in hospital have a high 1-year mortality rate regardless of whether they develop AMI or not. Whether their prognosis can be improved by shortening of delay time remains to be clarified.
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| 5. |
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| 6. |
- Chauhan, H. S., et al.
(författare)
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Direct- and inverse-photoemission investigations of the electronic structure of Cd(0001)
- 1993
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Ingår i: Physical Review B Condensed Matter. - : American Physical Society. - 0163-1829 .- 1095-3795. ; 48:7, s. 4729-4734
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Tidskriftsartikel (refereegranskat)abstract
- Photoemission and inverse angle-resolved photoemission spectra are presented for Cd(0001). The data are interpreted in terms of interband transitions, density-of-states effects, and excitations of surface states.
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| 7. |
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| 8. |
- Fransson, L Å, et al.
(författare)
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Effects of cycloheximide, brefeldin A, suramin, heparin and primaquine on proteoglycan and glycosaminoglycan biosynthesis in human embryonic skin fibroblasts
- 1992
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Ingår i: Biochimica et Biophysica Acta. - 0006-3002. ; 1137:3, s. 287-297
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Tidskriftsartikel (refereegranskat)abstract
- (1) We have isolated radiolabelled proteoglycans and glycosaminoglycans produced by human embryonic skin fibroblasts in the presence of (a) cycloheximide to inhibit protein synthesis or (b) brefeldin A to impede transport between the endoplasmic reticulum and the Golgi complex or (c) suramin, heparin or primaquine to interfere with internalization, recycling and degradation. Effects on glycosaminoglycan synthesis were assayed separately by using exogenous p-nitrophenyl beta-D-xylopyranoside (and [3H]galactose) or 125I-labelled p-hydroxyphenyl beta-D-xylopyranoside as initiators. (2) Inhibition of protein synthesis or blocking of transport to the Golgi complex prevented production of most of the proteoglycans with one exception: Cell-associated heparan sulphate-proteoglycan was still produced at 20% of the control level. (3) Treatment with suramin or heparin resulted in decreased deposition of proteoglycan in the pericellular matrix but increased accumulation of cell-associated proteoglycan. Primaquine blocked all proteoglycan synthesis. (4) In the presence of cycloheximide, exogenous beta-D-xyloside initiated galactosaminoglycan production. In contrast, in brefeldin A-treated cells, synthesis was completely abolished. Not even formation of the linkage-region trisaccharide could be detected. (5) These results suggest that exogenous xyloside enters the endoplasmic reticulum and is subsequently transported to the trans-Golgi complex where all further steps involved in glycosaminoglycan assembly takes place. (6) Heparan sulphate proteoglycan produced by brefeldin A-treated cells could be derived from (a) an intracellular pool of preformed core protein located to the trans-Golgi complex, or (b) resident proteoglycan that was either deglycanated/reglycanated or chain-extended. As combined treatment with suramin and brefeldin A markedly reduced cell-associated proteoglycan production, the latter possibility is favoured.
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| 9. |
- Gaillard, Marie-Jose, et al.
(författare)
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Application of modern pollen/land-use relationships to the interpretation of pollen diagrams - reconstructions of land-use history in South Sweden 3000-0 BP
- 1994
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Ingår i: Review of Palaeobotany and Palynology. - : Elsevier BV. - 0034-6667 .- 1879-0615. ; 82:1-2, s. 47-73
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Tidskriftsartikel (refereegranskat)abstract
- A modem pollen/land-use data-set of 124 surface samples (moss polsters) from different vegetation and land-use types in south Sweden is presented. The samples are from non-fertilized grazed areas, burned and grazed heaths, traditionally managed fodder-producing meadows and cultivated fields, and deciduous forests. Twenty nine environmental (e.g. management type, soil chemistry) variables are available for the 124 samples. Patterns of modern local pollen variation in relation to these environmental variables are explored by canonical correspondence analysis (CCA) and tested by associated statistical procedures. The modem data-set is used to aid interpretation of extra-local pollen sequences from two small lakes and one mire in south Sweden, using CCA as a means of comparing modem and fossil spectra. The resulting land-use reconstructions are compared to earlier interpretations of the same pollen-stratigraphical data using the more traditional ''indicator-species'' approach. Emphasis is placed on the history of mowing and grazing in south Sweden as an example of the potential uses of the comparative approach for interpretating fossil pollen data in terms of past land-use.
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| 10. |
- HARTMANN, O, et al.
(författare)
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MU-SR STUDY OF CHARGE NEUTRALLY DOPED Y1-2XCAXTHXBA2CU3O7-DELTA
- 1994
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Ingår i: PHYSICA C. - : ELSEVIER SCIENCE BV. - 0921-4534. ; 235, s. 1695-1696
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Muon spin relaxation measurements were performed on the Y1-2xCaxThxBa2Cu3O7-delta system covering the solubility range for doping in the orthorhombic phase. The low temperature relaxation rate was found to decrease with CaTh concentration in the dilute ra
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