| 1. |
- Darmastuti, Zhafira, et al.
(författare)
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Hierarchical methods to improve the performance of the SiC - FET as SO2 sensors in flue gas desulphurization system
- 2015
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Ingår i: Sensors and actuators. B, Chemical. - : Elsevier. - 0925-4005 .- 1873-3077. ; 206, s. 609-616
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Tidskriftsartikel (refereegranskat)abstract
- Experiments were performed both in the laboratory and a desulfurization pilot unit in order to improve the SiC-FET sensor performance using two-step data evaluation. In both cases, a porous Pt-gate enhancement type SiC-FET was utilized in a temperature cycled operation (TCO). Liner Discriminant Analysis (LDA) was chosen as the method for multivariate data analysis. Hierarchical methods with two-step LDA worked quite well in the laboratory tests with SO2 concentrations varied from 25-200 ppm. The same data evaluation was also applied to tests in the desulfurization pilot unit, with higher gas flow and a larger SO2 concentration range (up to 5000 ppm). The results from the SO2 quantification showed a significantly improved fit to corresponding reference instrument (FTIR) values.
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| 2. |
- Lindqvist, Niclas, et al.
(författare)
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Aromatic L-amino acid decarboxylase in rhesus monkey spinal cord
- 2015
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Konferensbidrag (refereegranskat)abstract
- Spasticity is a locomotory disability that is common after injury to the spinal cord. Monoamines such as serotonin and dopamine controls the activation of motoneurons, which in turn affects muscle. Aromatic L-amino acid decarboxylase (AADC) catalyzes formation of serotonin from 5-hydroxytryptophan and dopamine from L-dihydroxyphenylalanine. To study if there are cells in the primate spinal cord that express AADC and thereby may produce monoamines, we performed immunohistochemistry with diaminobenzidine staining on normal spinal cord from Rhesus monkey (Macaca mulatta). Transversal sections revealed AADC-immunoreactive (IR) cells close to the central canal (CC) with processes passing the ependymal layer into the CC where they terminated with a bulbous ending. These AADC-IR cells were mainly found on the ventral side of CC with strongly stained cell bodies and processes whereas occasional bulbous endings immunostained for AADC were found on the dorsal side of CC. These AADC-IR cells were clearly cerebrospinal-fluid contacting and classified as belonging to the D1 category of AADC-cells. They were found in cervical, thoracic, lumbar and sacral spinal cord segments. In addition, AADC-IR cells with clearly labeled processes were found around and ventral of CC towards the ventral median fissure. These cells were sometimes situated close to blood vessels. Thus, AADC-IR cells were mainly found in gray matter and in gray matter bordering the white matter. Vascular walls were not clearly immunostained for AADC. Strong AADC-IR was seen in fibers, particularly in the dorsal horns and these were potentially descending monoamine fibers from the brain. In comparison with rat spinal cord (1) the AADC-IR cells in monkey spinal cord were overall less abundant. In conclusion, we have identified AADC-IR cells in monkey spinal cord and further studies will reveal if they may contribute to monoamine synthesis and control of motoneuron excitability after spinal cord injury. (1) Wienecke et al, J Neurosci, 34:36, 2014
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| 3. |
- Olofsson, Niclas, et al.
(författare)
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Higher Risk of Violence Exposure in Men and Women With Physical or Sensory Disabilities : Results From a Public Health Survey
- 2015
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Ingår i: Journal of Interpersonal Violence. - : SAGE Publications. - 0886-2605 .- 1552-6518. ; 30:10, s. 1671-1686
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Tidskriftsartikel (refereegranskat)abstract
- The World Health Organization has declared that violence is a global public health problem. The prevalence of violence exposure among adults with intellectual and unspecific disabilities has been demonstrated in several studies, whereas only a few articles on people with sensory disabilities have been published. The aim of this study was to investigate the prevalence and risk for exposure to physical violence, psychological offence, or threats of violence in people with physical and/or sensory disabilities, compared with people with no such disabilities, controlling for socioeconomic data. Data from a public health survey were analyzed. A nationally representative sample of women and men aged 16 to 84 years had answered a questionnaire. In the present study, the whole sample, comprised of 25,461 women and 21,545 men, was used. Women with auditory disabilities were generally more often violence exposed than non-disabled women, whereas men with physical disabilities were more often violence exposed than non-impaired men. Some age groups among both women and men with visual disabilities had higher prevalence rates than women and men without disabilities. The adjusted odds ratios (ORs) were significantly higher among the auditory impairment group for exposure to physical (OR = 1.4, confidence interval [CI] = [1.1, 1.9]) and psychological (OR = 1.4, CI = [1.1, 1.8]) violence among women. Men with physical disabilities had raised odds ratios for physical violence (OR = 1.7, CI = [1.2, 2.4]) and psychological violence (OR = 1.4, CI = [1.0, 2.0]) compared with the non-disabled group. Both men and women with a physical or sensory disability showed higher odds of being exposed to violence than men and women without a disability. The results indicated that socioeconomic situation, smoking, and hazardous drinking strengthened the association between impairment and violence.
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