| 1. |
- Eriksson, Mats, 1963-, et al.
(författare)
-
The water-forming reaction on thin, SiO2 supported, palladium films
- 1990
-
Ingår i: Vacuum. - 0042-207X .- 1879-2715. ; 41:1-3, s. 137-138
-
Tidskriftsartikel (refereegranskat)abstract
- The water-forming reaction has been studied on thin Pd films, evaporated on planar SiO2 substrates. The nominal film thickness varied between 5 and 100 Å. The studies were performed in uhv by means of mass spectrometry, UPS and work function measurements in the temperature range 323–523 K. The film structure was also studied with TEM. The results are compared with previous measurements on 1000 Å, thick, homogeneous Pd films. The structure of the thin Pd films changed dramatically during cyclic H2 and O2 exposures, from that of a continuous film with cracks to that of drop-like metal particles. These structural changes are not observed on the thick (1000 Å) Pd films. Even though there are large structural changes, the water-forming reaction looks qualitatively the same as on a thick Pd film. The total water production however, decreases with decreasing film thickness. We believe that some minor qualitative differences in the water-forming reaction for different nominal Pd film thicknesses, are due to the increasing PdSiO2 boundary as the thickness is reduced.
|
|
| 2. |
- Erlandsson, Ragnar, et al.
(författare)
-
Gas-induced restructuring of palladium model catalysts studied with atomic force microscopy
- 1991
-
Ingår i: Journal of Vacuum Science & Technology B. - : American Vacuum Society. - 1071-1023 .- 1520-8567. ; 9:2, s. 825-828
-
Tidskriftsartikel (refereegranskat)abstract
- The structure of thin Pd films evaporated onto planar SiO2 substrates changes dramatically during oxygen/hydrogen exposures in ultrahigh vacuum. In this work we have used an atomic force microscope(AFM), operated in the attractive mode, to obtain the three‐dimensional morphology of the Pd surface for different film thicknesses and treatments, and compared the data with transmission electron microscopy(TEM) micrographs. During restructuring, a 100‐Å film changes from being a smooth continuous film with cracks into metal clusters dispersed on the SiO2 support. In the 5‐Å case the metal films are already well dispersed as fabricated. Here the gas exposure instead results in a clustering effect resulting in larger particles. The AFM gives results which are consistent with TEM micrographs but also gives additional information on metal particle shape which can lead to a further understanding of the restructuring process.
|
|
| 3. |
- Svensäter, Gunnel, et al.
(författare)
-
Risk, riskbedömning och prevention
- 2008
-
Ingår i: Tandläkartidningen. - 0039-6982. ; 100:9-10, s. 70-76
-
Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Biologiska markörer som baserar sig på egenskaper och aktivitet hos bakterier i dentala biofilmer skulle kunna användas för att identifiera patienter med hög risk för karies och parodontit. Genom att studera hur tandläkare gör riskbedömningar och tar beslut om åtgärder kan man få ett bra underlag för att förbättra praxis.
|
|
| 4. |
|
|
| 5. |
- André-Petersson, Lena, et al.
(författare)
-
Adaptive behavior in stressful situations and stroke incidence in hypertensive men: results from prospective cohort study "men born in 1914" in Malmo, Sweden
- 2001
-
Ingår i: Stroke: a journal of cerebral circulation. - 1524-4628. ; 32:8, s. 1712-1717
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND AND PURPOSE: Although hypertension is a major risk factor for stroke, many hypertensive persons remain healthy. The aim of the present study was to analyze whether adaptation in a stressful situation was associated with the incidence of stroke in hypertensive men. METHODS: Two hundred thirty-eight hypertensive men were followed from baseline in 1982/1983 until first stroke, death, or December 31, 1996. Adaptation to stress was studied with the serial Color-Word Test. In the Regression dimension, 4 patterns of adaptation could be distinguished according to mastering of the test. Successful mastering of the test was shown in stabilized patterns, increasing difficulty in cumulative patterns, fluctuating difficulty in dissociative patterns, and fluctuating difficulty that increased during testing in cumulative-dissociative patterns. The patterns were compared regarding stroke incidence. RESULTS: Forty-three men experienced a stroke during follow-up. Stroke rates per 1000 person-years were 12.6 for men with stabilized patterns, 14.3 for men with cumulative patterns, 16.2 for men with dissociative patterns, and 31.2 for men with cumulative-dissociative patterns. Multivariate analysis, adjusted for relevant cerebrovascular risk factors, showed that the cumulative-dissociative pattern of the Regression dimension was associated with an increased risk of stroke during follow-up (relative risk 3.00, 95% CI 1.32 to 6.81). CONCLUSIONS: The specific behavior pattern, characterized by the greatest difficulties in managing the test, was associated with incidence of stroke in hypertensive men. One interpretation is that hypertensive men who chronically fail to find successful strategies in stressful situations are vulnerable to the damaging effects of stress and thereby at an increased risk of a future stroke.
|
|
| 6. |
|
|
| 7. |
- André-Petersson, Lena, et al.
(författare)
-
Social support at work and the risk of myocardial infarction and stroke in women and men.
- 2007
-
Ingår i: Social Science and Medicine. - : Elsevier BV. - 1873-5347 .- 0277-9536. ; 64:4, s. 830-841
-
Tidskriftsartikel (refereegranskat)abstract
- It has been proposed that lack of social support in a work place characterized by high levels of stress, may increase the likelihood of future cardiovascular disease. The aim of this study was to analyze the prospective impact of social support at work in combination with self-reported work stress on incidence of myocardial infarction (MI) and stroke in a cohort of 4707 women (mean age: 54.2 years) and 3063 men (mean age: 55.5 years) in Malmo, Sweden. The results are based oil self-reports of work-related stress and social support collected at baseline examinations between the years 1992 and 1996. Work-stress was operationalized according to the Karasek job strain model. Data on incidence of NIL and stroke were obtained from national and regional registers. At the end of follow-up, December 31, 2001, 38 women had experienced an MI and 53 had had a stroke. Corresponding figures for men were 114 MIs and 81 strokes. The first finding was that social support at work was an independent predictor of an M I and stroke among women. The second finding was that there was no evidence to support the iso-strain model. The third finding was that low levels of social support at work together with a passive work situation indicated an increased risk of a future cardiovascular outcome (NI I or stroke) during follow-up in the female group. In men, no association was found between any psychosocial work conditions and incidence of MI or stroke during the same follow-up period. (c) 2006 Elsevier Ltd. All rights reserved.
|
|
| 8. |
- Eriksson, Mats, 1963-, et al.
(författare)
-
Spillover of hydrogen, oxygen and carbon monoxide in oxidation reactions on SiO2 supported Pd
- 1994
-
Ingår i: Surface Science. - : Elsevier BV. - 0039-6028 .- 1879-2758. ; 311:1-2, s. 139-152
-
Tidskriftsartikel (refereegranskat)abstract
- Oxidation of H2 and CO on large, oxygen preexposed Pd islands supported on SiO2, has been investigated in the temperature range 323 ⩽, T ⩽ 523 K. The results have been compared with the corresponding reactions on a polycrystalline Pd film. A maximum reactive sticking coefficient of 0.9 for H2 and an initial sticking coefficient for O2 of 0.8 on both structures is concluded. The maximum reactive sticking coefficient for CO is 0.85 on the film and apparently larger than unity on the island structure. The results obtained from the island structure can be rationalized if O2 and H2 dissociate on the Pd islands and have the possibility to spillover onto the oxide, while CO adsorbs and reacts both on the Pd islands and on the oxide. Spillover of oxygen occurs in a precursor state and is irreversible with an apparent activation energy of 0.1 eV for the forward reaction.
|
|
| 9. |
- Häggström, Henrik, et al.
(författare)
-
Framtidens säkerhetstjänst i totalförsvaret
- 2024
-
Bok (övrigt vetenskapligt/konstnärligt)abstract
- Mot bakgrund av en breddad och allt mer komplex hotbild mot Sverige och en ambition att stärka den svenska totalförsvarsförmågan har regeringen och Regeringskansliet på senare år skjutit till nya medel och försvarsanslag till det militära och civila försvaret, inklusive den militära Säkerhetstjänsten. De har även tagit fram ett antal nya lagar och regler som på olika sätt syftar till att vägleda säkerhetstjänstens verksamhet och stärka landets motståndskraft mot olika säkerhetshot inom ramen för totalförsvaret.Denna antologi har till uppgift att utifrån olika perspektiv analysera hur moderna hotbilder, ny teknik, lagstiftning, natomedlemskap och krav på samverkan med andra myndigheter och företag kommer påverka den militära säkerhetstjänstens och säkerhetsunderrättelsetjänstens verksamhet i framtiden. Antologin är skriven av några av Sveriges ledande experter på området i syfte att beskriva de utmaningar som den militära säkerhetstjänsten och säkerhetsunderrättelsetjänsten står inför samtidigt som totalförsvaret och krisberedskapen i Sverige återuppbyggs.Några av de frågor som ställs i antologin är hur och i vilken utsträckning det försämrade säkerhetsläget i vårt närområde, ny säkerhetsskyddslagstiftning, ambitionen att stärka det svenska totalförsvaret och Sveriges medlemskap i Nato kommer leda till att säkerhetstjänstens arbetsuppgifter förändras i framtiden? Slutsatserna från denna antologi är säkerhetstjänsten och säkerhetsunderrättelsetjänsterna i Sverige står inför ett paradigmskifte där det kommer vara nödvändigt att modernisera organisationen och implementera ny teknik för att anpassa sig till den digitala eran. Även vikten av intensifierad internationell samverkan kommer spela stor roll för säkerhetstjänstens möjligheter att bedriva ett effektivt arbete på nationell nivå i framtiden. Det multilaterala samarbetet är här för att stanna även om det är svårt och bygger på förtroenden mellan stater som inte alltid finns.
|
|
| 10. |
- Lundh, Lars-Gunnar, et al.
(författare)
-
The neglect of treatment-construct validity in psychotherapy research: A systematic review of comparative RCTs of psychotherapy for Borderline Personality Disorder
- 2016
-
Ingår i: BMC psychology. - : Springer Science and Business Media LLC. - 2050-7283. ; 4:1
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Randomized controlled trials (RCTs) are considered the best methodology for studying the efficacy of psychotherapy. Optimally an RCT design makes it possible to conclude that if one treatment has a better outcomethan another, this is due to the treatment package (TP) as it was implemented in this particular context, rather than other factors beyond the treatment (= high internal validity). Strong internal validity does not, however, provide evidence for the treatment model (TM) that provides the theoretical basis of the TP, because the TP that is tested may differ from the comparison condition in a number of other ways that suggest alternative explanations for the effects. These alternative treatment contrasts represent threats to construct validity of the conclusions. Maximal construct validity requires (1) that the treatments are clearly contrasted on the experimental factors (treatment integrity), and (2) that alternative treatment contrasts can be eliminated. The analysis of alternative explanations is a neglected topic in psychotherapy research. To approach this problem, a methodology for the analysis of treatment contrasts is suggested and tested.Methods: Two indexes were defined: (1) a Treatment Integrity Index (TII) and (2) an Alternative Treatment Contrast Index (ATCI). This methodological approach was applied to eight comparative RCTs of treatments for BorderlinePersonality Disorder (BPD), which were coded for a set of treatment contrasts independently by three coders.Results: The analysis of the RCTs of treatments for BPD showed that construct validity differed widely between the different studies but was generally low (low TII and ATCI), and that it is therefore difficult to draw causal conclusions from this research. The publication policies of scientific journals in this area seldom require the systematic data relevant to an analysis of alternative explanations of the effects, which is needed to provide evidence for a particular TM.Conclusions: Research on psychotherapy needs to be refocused from treatment packages (TP) to treatment models (TM). This requires an improved conceptualization of the methodological principles and skills involved,and the development of valid measures of these, but also improved reporting standards concerning treatment-construct validity in scientific journals.
|
|
| 11. |
- Neilands, Jessica, et al.
(författare)
-
Fluoride-supplemented milk inhibits acid tolerance in root caries biofilms
- 2012
-
Ingår i: Caries Research. - : S. Karger. - 0008-6568 .- 1421-976X. ; 46:2, s. 156-160
-
Tidskriftsartikel (refereegranskat)abstract
- In this study we investigated the effect of fluoride on plaque acid tolerance. The test group consumed 200 ml of milk supplemented with 5 mg F/l as NaF once a day, the milk control group drank 200 ml of unsupplemented milk, and the no-milk control group did not consume milk in this manner. Plaque samples were taken at baseline and after 15 months. The proportion of acid-tolerant bacteria in plaque was estimated using LIVE/DEAD® BacLight™ staining after exposure to pH 3.5 for 2 h. The fluoride group showed a statistically significant decrease in plaque acid tolerance compared to baseline. This study shows that daily intake of fluoride in milk reduces plaque acid tolerance.
|
|
| 12. |
- Nilsson, Gunnar, et al.
(författare)
-
Evaluation of three Swedish ICD-10 primary care versions : reliability and ease of use in diagnostic coding
- 2000
-
Ingår i: Methods of Information in Medicine. - 0026-1270. ; 39:4-5, s. 325-331
-
Tidskriftsartikel (refereegranskat)abstract
- If computer-stored information is to be useful for purposes other than patient care, reliability of the data is of utmost importance. In primary healthcare settings, however, it has been found to be poor. This paper presents a study on the influence of coding tools on reliability and user acceptance. Six general practitioners coded 152 medical problems each by means of three versions of ICD-10, one with a compositional structure. At code level the reliability was poor and was almost identical when the three versions were compared. At aggregated level the reliability was good and somewhat better in the compositional structure. Ideas for improved user acceptance arose, and the study explored the need for several different tools to retrieve diagnostic codes.
|
|
| 13. |
|
|
| 14. |
- Petersson, Håkan, 1972-, et al.
(författare)
-
The connection between terms used in medical records and coding system : a study on Swedish primary health care data
- 2001
-
Ingår i: Medical informatics and the Internet in medicine (Print). - : Informa UK Limited. - 1463-9238 .- 1464-5238. ; 26:2, s. 87-99
-
Tidskriftsartikel (refereegranskat)abstract
- Implementation of problem lists and their relation to standardized coding systems have been approached and analysed in different ways. Most evaluations concern quantitative aspects such as content coverage in a specific domain. In order to reveal the qualitative aspects of diagnostic coding, medical record texts from primary health care encounters were compared with terms from a coding system that was used for describing them statistically. The records were coded by six general practitioners, and in some cases, an applied diagnostic term was found within the text, while other record text-coding system relationships were categorized as synonyms, alternative terms, and interpretations. Thus, the categories roughly corresponded to a measure of semantic distance between the terms in the record text and the rubrics of the coding system, and there was a correlation between semantic distance and inter-rater agreement. The subcategories of this scheme corresponded fairly well to recently published desiderata for clinical terminology servers, including functionality such as word normalization and spelling correction. However, not all problems could have been automatically coded by means of lexical methods, which can be partly explained by the fact that diagnostic coding also relies on clinical knowledge. In addition, proper automation relies on context representation within the records.
|
|
| 15. |
- Sandin, Gunnar, et al.
(författare)
-
Aesthetic regulation of objectionable representations. : A semiotic approach to memorials and religious architectural space.
- 2012
-
Ingår i: Global Semiotics : Bridging Different Civilizations - Bridging Different Civilizations. - 9787563037438
-
Konferensbidrag (refereegranskat)abstract
- Whenever a material object is selected to represent a physically absent, but emotionally present referent, such as a religious figure or a deceased relative, we have a complex representation situation that involves what we could tentatively label “transgressive cognitive acts”. A transgressive cognitive act is here meant to involve a part that is experienced as present, and as having an effect, but not evidenced from a rationalist or scientific perspective on existence. Sometimes, the complexity of this type of representation is such that argumentation beside the theological, e.g. aesthetic, comes to stand as vicarious to theological or existential opinions about the matter. The semiotics of such vicarious representation have to consider a “leaking” communication model where one part in the trinity - of the sender, the receiver or the referent - escape a coherent or evidenced definition (God can be all three, depending on type of communication). The fact that empirically non-existing referents have been recognized and theorized in semiotics (Eco; Sonesson; and others) does not explain why certain cases of absent semiotic agents, linked to religious belief, or to sense of presence in grief of a deceased person, may give rise to such extreme degree of emotion or sense of existence.Departing from a narrated episode written by J M Coetzee, about the controversy brought up by a crucifix, turning into a quarrel about aesthetic preferences, this paper discusses a series of designed or spontaneously created spatial representations of physically absent, but indirectly and emotionally present referents, as they appear in memorials, cemeteries and funeral chapels. In public acts of memorialisation, the physical objects that represent the deceased – like gravestones or memorial objects placed at sites representing the dead – are often strictly regulated, differently in different cultures. When for instance they appear at unexpected places in the urban environment, or with unfamiliar looks, memorials and their material culture can become highly controversial or be regarded as objectionable.These materialisations with a relation to religion, or existential belief, may give rise to arguments where the aesthetic aspect is the last chance to state a principle order in the cultural scheme in which they are debated. Such arguments are actualised in the current debate about post-secular societies, where it is for instance stated (Habermas) that both religious and secular mentalities must be open to a complementary learning if we are to balance shared citizenship and cultural difference in the post-secular society. It is an objective of this paper to show that the recognition of a semiotics that involves the paradoxical presence of emotionally strong, but fundamentally absent parts in communication can contribute to the aesthetics of physically present, but existentially debated objects, as well as to the discussion about the confronting as well as conjoining elements of regulation of these issues in society.
|
|
| 16. |
- Sunesson, Sune, et al.
(författare)
-
The Flight from Universalism.
- 1998
-
Ingår i: European Journal of Social Work. - 1369-1457. ; 1
-
Tidskriftsartikel (refereegranskat)
|
|
