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| 3. |
- Albertsson, A-C., et al.
(author)
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Biodegradable polymers
- 1992
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In: Comprehensive Polymer Science, Supplement Series. - Midland, Michigan : Pergamon Press. ; , s. 285-
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Book chapter (peer-reviewed)
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| 6. |
- Albertsson, A-C., et al.
(author)
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Degradable polyethylene-starch complex
- 1991
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In: Makromolekulare Chemie, Macromolecular Symposia. ; 48-49:Eur. Polym. Fed. Symp. Polym. Mater., 3rd, 1990, s. 395-402
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Journal article (peer-reviewed)
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| 7. |
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| 8. |
- Albertsson, A-C., et al.
(author)
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Environment-adaptable polymers
- 1993
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In: Polymer degradation and stability. - 0141-3910 .- 1873-2321. ; 41:3, s. 345-349
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Journal article (peer-reviewed)
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| 15. |
- Andersson-Engels, Stefan, et al.
(author)
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Clinical recording of laser-induced fluorescence spectra for evaluation of tumour demarcation feasibility in selected clinical specialities
- 1991
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In: Lasers in Medical Science. - 0268-8921. ; 6:4, s. 415-424
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Journal article (peer-reviewed)abstract
- Laser-induced autofluorescence spectra from humans were recorded in vivo at three different clinics in a study aimed at investigating the capability of this method to discriminate between malignant tumours and normal surrounding tissues. For the recordings a mobile trolley with the necessary equipment was constructed for use in an examination room or in an operating theatre environment. Laser light was guided through a 600m optical fibre to the target tissue. The fluorescence from the excited tissue was collected with the same fibre and was fed to an optical multichannel analyser. Two excitation wavelengths were used (337 and 405 nm) in order to optimize the fluorescence signals in two interesting wavelength regions (380–500 and 550–700 nm). Oral and oropharyngeal tumours excited with 405 nm light contained detectable endogenous porphyrins and were in this way discriminated from the normal mucosa. Astrocytoma grade III–IV fluorescence different from that of normal brain tissue, while tumours in the bronchial tree were not detectable using the spectral shape of the pure tissue autofluorescence.
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| 16. |
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| 17. |
- Blohm, M, et al.
(author)
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Reaction to a media campaign focusing on delay in acute myocardial infarction
- 1991
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In: Heart & Lung. - : Elsevier. - 0147-9563 .- 1527-3288. ; 20:6, s. 661-666
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Journal article (peer-reviewed)abstract
- A media campaign conducted to reduce delay time and to increase the use of ambulance transport in acute myocardial infarction was performed in an urban area with about half a million inhabitants during 1 year. The main message was that chest pain lasting more than 15 minutes might indicate acute myocardial infarction; dial 90,000 immediately for ambulance transport to the hospital. The target population was the general public. After 6 and 12 months 400 and 610 randomly chosen persons, respectively, were contacted by telephone to evaluate the reaction of the general public to the campaign. Of these, 60% and 71%, respectively, had heard of the campaign, and all parts of the message were spontaneously remembered by 15% and 19%, respectively. The reaction to the campaign was generally positive. Among all patients admitted to the coronary care unit of one of the two city hospitals, 65% were aware of the campaign and 31% of them were of the opinion that they came to the hospital faster because of the campaign. In conclusion, a media campaign aimed at reducing patient delay time in acute myocardial infarction was shown to reach a majority of people in the community and patients with ischemic heart disease. The reaction was positive and about one fifth of interviewed people spontaneously remembered the total message.
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| 18. |
- Brunsell, P., et al.
(author)
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Extrap L-1 Experimental Stability
- 1990
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In: XVII European Conference on Controlled Fusion and Plasma Heating, Amsterdam, Netherlands, June 25-29, 1990. ; , s. 610-
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Conference paper (peer-reviewed)
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| 19. |
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| 20. |
- Chauhan, H. S., et al.
(author)
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Direct- and inverse-photoemission investigations of the electronic structure of Cd(0001)
- 1993
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In: Physical Review B Condensed Matter. - : American Physical Society. - 0163-1829 .- 1095-3795. ; 48:7, s. 4729-4734
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Journal article (peer-reviewed)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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| 21. |
- Elfgren, Lennart, et al.
(author)
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Forskning och forskarutbildning vid Tekniska högskolan i Luleå : Strategisk Plan 1991-1995
- 1990
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Reports (peer-reviewed)abstract
- Forskningen vid Tekniska högskolan i Luleå syftar till att vinna ny kunskap inom områden som är betydelsfulla för landet och regionen. Forskarutbildningen syftar till att utbilda licentiater och doktorer inom sådana områden.Under femårsperioden fram till och med 1995 bör den externfinansierade forskningen öka med 25 %. Vidare bör 5-10 europeiskla samarbetsprojekt etableras. För att uppmå dessa mål bör programarbete genomföras inom bland annat områdena datateknik, teknik för kallt klimat, material- konstruktions- och produktionsteknik, kvinnor och teknik samt miljöteknik.En plan bör även upprättas för ny- och återanskaffning av utrustning.En doktorsexamen och en licentiatexamen bör avläggas per tvåårsperid i varje professorsämne. För att klara detta bör varje ämne ha minst tre aktiva forskarstuderande. De forskarstuderande bör erbjudas god handledning, ett bra utbud av doktorandkurser och en god akademisk miljö.
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| 22. |
- Franzén, Lars, et al.
(author)
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Fractionated-irradiation and late changes in rat parotid-gland : effects on the number of acinar-cells, potassium efflux, and amylase secretion
- 1993
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In: International Journal of Radiation Biology. - : Informa UK Limited. - 0955-3002 .- 1362-3095. ; 64:1, s. 93-101
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Journal article (peer-reviewed)abstract
- Irradiation of head- and neck cancer commonly results in oral dryness and discomfort for the patients due to salivary gland damage. The exact mechanisms behind the inherent radiosensitivity of salivary glands remain to be elucidated. In the present study, we used different in vitro secretory models and quantitative morphological characterization of rat parotid gland following fractionated unilateral irradiation to one gland on a 5-day fraction schedule (Monday-Friday) with 6 MV photons (total dose 30, 35, 40 and 45 Gy) or a two-fractions regimen in 5 days (Monday and Friday) with total dose of 24 and 32 Gy. The contralateral shielded gland served as control, and parallel analyses of irradiated and control glands were performed 180 days following the last irradiation treatment. The relative noradrenaline stimulated electrolyte secretion (rubidium-86 tracer for potassium) was decreased in the irradiated compared with control glands. The noradrenaline-stimulated exocytotic amylase release was not significantly affected by irradiation, but the gland content of amylase was decreased dose-dependently. The quantitative morphological analysis revealed a dose-dependent decline in the number of acinar cells, whereas the other parenchymal cells (intercalated, striated- and excretory duct cells) were un-, affected by the irradiation compared with control glands.
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| 23. |
- Gaillard, Marie-Jose, et al.
(author)
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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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In: Review of Palaeobotany and Palynology. - : Elsevier BV. - 0034-6667 .- 1879-0615. ; 82:1-2, s. 47-73
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Journal article (peer-reviewed)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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| 24. |
- Göthelid, M., et al.
(author)
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Adatom and rest-atom contributions in Ge(111)c(2×8) and Ge(111)-Sn(7×7) core-level spectra
- 1993
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In: Physical Review B. - 0163-1829. ; 48:3, s. 2012-2015
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Journal article (peer-reviewed)abstract
- We have identified the adatom contribution in the Ge 3d core-level spectra from the clean Ge(111)c(2×8) surface, shifted 0.17 eV to higher binding energy compared to the bulk. This adatom component vanishes in the Ge(111)-Sn(7×7) surface core-level spectra where Sn occupies the adatom site. Moreover we report the observation of an earlier proposed difference between the rest atoms in the c(2×8) structure, and also a shift to lower binding energy for the rest atoms in both structures studied. © 1993 The American Physical Society.
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| 25. |
- Göthelid, M., et al.
(author)
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Sn-induced surface reconstructions on the Ge(111) surface studied with scanning tunneling microscopy
- 1992
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In: Surface Science. - 0039-6028. ; 271:3, s. L357-L361
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Journal article (peer-reviewed)abstract
- Scanning tunneling microscopy (STM) has been used to study different Sn induced reconstructions on the Ge(111) surface; namely the (7 × 7), (5 × 5) and ( 3 × 3) R30° structures. The first two have been confirmed to be of the dimer adatom stacking faults (DAS) type with adatoms mainly being Sn. The ( 3 × 3)R30° superstructure was found at different Sn depositions. At 0.4 monolayer (ML) Sn coverage a homogeneous Sn adatom layer is adsorbed on the(1 × 1) surface in threefold sites directly over second-layer atoms (T4), while at low coverage, 0.1 ML, the top layer is a mixture of Sn and Ge atoms. We also propose the chemical identities of the different atoms seen in the STM images as related to their apparent height. © 1992.
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