| 21. |
- Lundberg, Bo, et al.
(författare)
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Resistivity of a composite conducting polymer as a function of temperature, pressure, and environment: Applications as a pressure and gas concentration transducer
- 1986
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Ingår i: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 60:3, s. 1074-1079
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Tidskriftsartikel (refereegranskat)abstract
- The resistivity of a commercial carbon-filled composite conducting polymer (ET-Semicon[large-closed-square]) has been measured as a function of temperature between 80 and 400 K and under pressure up to 1.5 GPa (15 kbar). Large changes in resistivity were observed. The resistivity was also very sensitive to the presence of certain solvents and hydrocarbons. The results are explained as percolation effects caused by changes in volume due to pressure, thermal expansion, or dissolved solvents. The material studied is found to have a wide range of potential applications for pressure measurements and as a transducer for gas or liquid concentration.
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| 22. |
- Lundberg, Bertil, et al.
(författare)
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Sociodemographic and clinical factors related to devaluation/discrimination and rejection experiences among users of mental health services.
- 2007
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Ingår i: Social psychiatry and psychiatric epidemiology. - : Springer Science and Business Media LLC. - 1433-9285 .- 0933-7954. ; 42:4, s. 295-300
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: A major goal in mental health research and policy is to identify ways to reduce stigma among persons with mental illness. AIMS: The aims of the present study were to (1) investigate the prevalence of rejection and devaluation/discrimination in a cross-sectional sample of 200 individuals with experiences of mental illness and (2) investigate the relationship between sociodemographic and clinical, client characteristics and perceived devaluation/discrimination and experiences of rejection. METHODS: A total of 200 subjects in current contact with mental health services or with earlier experiences of this were interviewed regarding beliefs about devaluation/discrimination and rejection experiences. RESULTS: The results showed that subjects with a higher degree of global functioning perceived less devaluation/discrimination. With regard to rejections experiences associations were found between rejection experiences and global functioning, number of admissions to inpatient psychiatric care and current contact with social services. CONCLUSION: Further research should investigate the causal relationship between stigma experiences and psychosocial functioning. To understand what consequences perceived devaluation/discrimination has for the afflicted, a psychological and social approach in the research must be taken into consideration.
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| 23. |
- Lundberg, Bertil, et al.
(författare)
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Stigma, discrimination, empowerment and social networks: A preliminary investigation of their influence on subjective quality of life in a Swedish sample
- 2008
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Ingår i: International Journal of Social Psychiatry. - : SAGE Publications. - 0020-7640 .- 1741-2854. ; 54:1, s. 47-55
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Tidskriftsartikel (refereegranskat)abstract
- Background: Studies investigating the importance of social network, empowerment and experiences of stigma on subjective quality of life among persons with mental illness are rare. Aim: This study aimed to investigate beliefs of devaluation/discrimination, actual rejection experiences, empowerment, social network and the relationship of these factors to subjective quality of life among subjects with mental illness. Methods: A cross-sectional study assessing beliefs of devaluation/discrimination, actual rejection experiences, empowerment, social network and subjective quality of life was performed on 150 subjects with mental illness. Results: The factors most prominently related to subjective quality of life were overall empowerment and overall social network. For a subgroup of subjects suffering from psychotic disorders there was a significant negative relationship between subjective quality of life and rejection experiences. This group also reported more frequent rejection experiences. Conclusion: The findings indicate that persons with mental illness are a heterogeneous group with regard to the influence of social network, stigma and empowerment on subjective quality of life. The negative impact of actual rejection experiences might express that, in order to increase subjective quality of life, stigma must be addressed as a separate and important factor in its own right.
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| 24. |
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| 25. |
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| 26. |
- Lundberg, Erik, et al.
(författare)
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Örebro stads kyrkor
- 1939
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Bok (övrigt vetenskapligt/konstnärligt)
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| 27. |
- Malm, Christer, et al.
(författare)
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Leukocytes, cytokines, growth factors and hormones in human skeletal muscle and blood after uphill or downhill running.
- 2004
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Ingår i: The Journal of physiology. - : Wiley. - 0022-3751 .- 1469-7793. ; 556:Pt 3, s. 983-1000
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Tidskriftsartikel (refereegranskat)abstract
- Muscular adaptation to physical exercise has previously been described as a repair process following tissue damage. Recently, evidence has been published to question this hypothesis. The purpose of this study was to investigate inflammatory processes in human skeletal muscle and epimysium after acute physical exercise with large eccentric components. Three groups of subjects (n= 19) performed 45 min treadmill running at either 4 deg (n= 5) or 8 deg (n= 9) downhill or 4 deg uphill (n= 5) and one group served as control (n= 9). One biopsy was taken from each subject 48 h post exercise. Blood samples were taken up to 7 days post exercise. Compared to the control group, none of the markers of inflammation in muscle and epimysium samples was different in any exercised group. Only subjects in the Downhill groups experienced delayed onset of muscle soreness (DOMS) and increased serum creatine kinase activity (CK). The detected levels of immunohistochemical markers for T cells (CD3), granulocytes (CD11b), leukaemia inhibitory factor (LIF) and hypoxia-inducible factor 1beta (HIF-1beta) were greater in epimysium from exercised subjects with DOMS ratings >3 (0-10 scale) compared to exercised subjects without DOMS but not higher than controls. Eccentric physical exercise (downhill running) did not result in skeletal muscle inflammation 48 h post exercise, despite DOMS and increased CK. It is suggested that exercise can induce DOMS by activating inflammatory factors present in the epimysium before exercise. Repeated physical training may alter the content of inflammatory factors in the epimysium and thus reduce DOMS.
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| 28. |
- Peleli, Maria, et al.
(författare)
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In adenosine A(2B) knockouts acute treatment with inorganic nitrate improves glucose disposal, oxidative stress, and AMPK signaling in the liver
- 2015
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Ingår i: Frontiers in Physiology. - : Frontiers Media SA. - 1664-042X. ; 6
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Tidskriftsartikel (refereegranskat)abstract
- Rationale: Accumulating studies suggest that nitric oxide (NO) deficiency and oxidative stress are central pathological mechanisms in type 2 diabetes (T2D). Recent findings demonstrate therapeutic effects by boosting the nitrate-nitrite-NO pathway, which is an alternative pathway for NO formation. This study aimed at investigating the acute effects of inorganic nitrate on glucose and insulin signaling in adenosine A2B receptor knockout mice (A(2B)(-/-), a genetic mouse model of impaired metabolic regulation. Methods: Acute effects of nitrate treatment were investigated in aged wild-type (WT) and A(2B)(-/-) mice. One hour after injection with nitrate (0.1 mmol/kg, i.p.) or placebo, metabolic regulation was evaluated by intraperitoneal glucose and insulin tolerance tests. NADPH oxidase-mediated superoxide production and AMPK phosphorylation were measured in livers obtained from non-treated or glucose-treated mice, with or without prior nitrate injection. Plasma was used to determine insulin resistance (HOMA-IR) and NO signaling. Results: A(2B)(-/-) displayed increased body weight, reduced glucose clearance, and attenuated overall insulin responses compared with age-matched WT mice. Nitrate treatment increased circulating levels of nitrate, nitrite and cGMP in the A(2B)(-/-), and improved glucose clearance. In WT mice, however, nitrate treatment did not influence glucose clearance. HOMA-IR increased following glucose injection in the A(2B)(-/-), but remained at basal levels in mice pretreated with nitrate. NADPH oxidase activity in livers from A(2B)(-/-), but not WT mice, was reduced by nitrate treatment. Livers from A(2B)(-/-) displayed reduced AMPK phosphorylation compared with WT mice, and this was increased by nitrate treatment. Finally, injection with the anti-diabetic agent metformin induced similar therapeutic effects in the A(2B)(-/-) as observed with nitrate. Conclusion: The A(2B)(-/-) mouse is a genetic mouse model of metabolic syndrome. Acute treatment with nitrate improved the metabolic profile in it, at least partly via reduction in oxidative stress and improved AMPK signaling in the liver.
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