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- Kjellgren, Karin I, 1950, et al.
(författare)
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Antihypertensive treatment and patient autonomy--the follow-up appointment as a resource for care.
- 2000
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Ingår i: Patient education and counseling. - 0738-3991 .- 1873-5134. ; 40:1, s. 39-49
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Tidskriftsartikel (refereegranskat)abstract
- Since hypertension is a chronic condition which generally requires long-term commitment to pharmacological therapy as well as alterations of patient lifestyle, the patient-physician communication in the clinical setting is an important determinant of the quality of care and health outcome. The aim of the present study was to explore the structure and content of the communication between the patient and the physician, and the process of decision-making at a routine follow-up appointment for hypertension. The study was based on 51 audio-recordings of authentic consultations. Most patients had a passive role in the consultations, and initiated few topics of conversation. The few topics that the patients initiated were usually not about hypertension. Patients' questions about medication mainly referred to unwanted effects of the drugs. Little time was invested in discussing risks related to hypertension. A collaborative shared decision-making was seldom observed in the consultations.
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- Andersson, Jan, et al.
(författare)
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Oxygen saturation and cognitive performance.
- 2002
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Ingår i: Psychopharmacology. - : Springer Science and Business Media LLC. - 0033-3158 .- 1432-2072. ; 162:2, s. 119-128
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of the experiments was to investigate how inhalation of 100% oxygen affected cognitive performance. A test battery was developed that was designed to capture different aspects of cognitive processes, i.e., perception, attention, working memory, long-term memory and prospective memory. All tests were verbally based, thus reducing cognitive spatial processes to a minimum. In experiment 1, 48 participants volunteered in a complete factorial within-participant design. Two different conditions for type of gas were used, inhalation of 100% oxygen and inhalation of breathing air (approximately 21% oxygen balanced with nitrogen). The inhalation was performed during the 1 min prior to starting each separate test. The instructions for each test were given during the inhalation period. All participants inhaled oxygen or breathing air through a Swedish military pilot mask. Physiological (heartbeats per minute and blood oxygen saturation level) reactions were recorded continuously throughout the session. Participants also completed a mood-state questionnaire before and after the test battery. The results revealed that cognitive performance were not affected by inhalation. Hence, this experiment does not replicate previous findings that suggest that inhalation of 100% oxygen could increase cognitive performance. Another experiment was performed to control for methodological issues. Experiment 2 revealed exactly the same pattern, i.e., inhalation of oxygen did not affect cognitive functioning.
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- Andersson, Per, 1964-
(författare)
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Att studera och bli bedömd : Empiriska och teoretiska perspektiv på gymnasie- och vuxenstuderandes sätt att erfara studier och bedömningar
- 2000
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This dissertation is focussing on students’ experiences of assessments, which means that the assessments are related to studying. The assessments particularly investigated are the main types of assessments used in the application and selection for higher education in Sweden – the grading in schools on secondary level, and the Swedish Scholastic Aptitude Test (SweSAT).The literature review is an analysis of previous knowledge, resulting in a model of orientations to studying.The empirical investigation consists of interviews with 100 students in upper secondary school, municipal adult education and folk high schools. The interviews are analysed with a phenomenographic approach, and the analysis results in categories describing ways of experiencing what it means to study, ways of experiencing the grades, and the SweSAT. In addition to this, the analysis gives a description of relations between components within categories, relations between categories, and relations between phenomena.The main patterns in the students’ experiences of the assessments are the following: The different categories, describing the experiences of the assessments per se, are focussing on assessment of performance, assessment of personal qualities (including developed knowledge), or uncertainty in relation to the assessment. There are four main aspects of the students’ experiences of the value of assessments, i.e., the relation to future plans, the relation to the student’s personal context, the possibility to influence your result, and the relation to other assessments used in the selection.The final result of the empirical investigation is a reconstructed model of five orientations to studying, where the empirical results are integrated with previous knowledge. The five categories are the knowledge orientation, the duty orientation, the participation orientation, the qualification orientation, and the resistance orientation. These orientations are also described as adaptive and/or non-adaptive in relation to the demands of the education.A further analysis in relation to three social science perspectives shows how assessments can contribute to the colonization of the educational lifeworld, how assessments can be seen as instruments of discipline, and how assessments can be seen as disembedding mechanisms.
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- Dittmer, Staffan, 1970, et al.
(författare)
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Electric field aligned growth of single-walled nanotubes
- 2004
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Ingår i: Current Applied Physics. - : Elsevier BV. - 1567-1739. ; 4, s. 595-598
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Tidskriftsartikel (refereegranskat)abstract
- Electric field aligned, single-walled carbon nanotubes are grown between electrodes using thermal chemical vapour deposition (CVD) of methane. The growth occurs on a thin film layered catalyst of aluminium, iron and molybdenum patterned on top of electrodes. The nanotubes bridge 10 μm sized electrode gaps and have a typical diameter of less than 2 nm as measured by Raman spectroscopy and atomic force microscopy. We present electrical transport measurements on a directly grown nanotube which shows p-type semiconducting behaviour.
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- Escobar, Matthew, et al.
(författare)
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Light regulation of the Arabidopsis respiratory chain. Multiple discrete photoreceptor responses contribute to induction of type II NAD(P)H dehydrogenase genes
- 2004
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Ingår i: Plant Physiology. - : Oxford University Press (OUP). - 1532-2548 .- 0032-0889. ; 136:1, s. 2710-2721
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Tidskriftsartikel (refereegranskat)abstract
- Controlled oxidation reactions catalyzed by the large, proton-pumping complexes of the respiratory chain generate an electrochemical gradient across the mitochondrial inner membrane that is harnessed for ATP production. However, several alternative respiratory pathways in plants allow the maintenance of substrate oxidation while minimizing the production of ATE We have investigated the role of light in the regulation of these energy-dissipating pathways by transcriptional profiling of the alternative oxidase, uncoupling protein, and type II NAD(P)H dehydrogenase gene families in etiolated Arabidopsis seedlings. Expression of the nda1 and ndc1 NAD(P)H dehydrogenase genes was rapidly up-regulated by a broad range of light intensities and qualities. For both genes, light induction appears to be a direct transcriptional effect that is independent of carbon status. Mutant analyses demonstrated the involvement of two separate photoreceptor families in nda1 and ndc1 light regulation: the phytochromes (phyA and phyB) and an undetermined blue light photoreceptor. In the case of the nda1 gene, the different photoreceptor systems generate distinct kinetic induction profiles that are integrated in white light response. Primary transcriptional control of light response was localized to a 99-bp region of the nda1 promoter, which contains an 1-box flanked by two GT-1 elements, an arrangement prevalent in the promoters of photosynthesis-associated genes. Light induction was specific to nda1 and ndc1. The only other substantial light effect observed was a decrease in aox2 expression. Overall, these results suggest that light directly influences the respiratory electron transport chain via photoreceptor-mediated transcriptional control, likely for supporting photosynthetic metabolism.
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- Geisler, Daniela, et al.
(författare)
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Antimycin A treatment decreasees respiratory internal rotenone-insensitive NADH oxidation capacity in potato leaves
- 2004
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Ingår i: BMC Plant Biology. - : Springer Science and Business Media LLC. - 1471-2229. ; 4:8, s. 1-10
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Tidskriftsartikel (refereegranskat)abstract
- Background The plant respiratory chain contains several energy-dissipating enzymes, these being type II NAD(P)H dehydrogenases and the alternative oxidase, not present in mammals. The physiological functions of type II NAD(P)H dehydrogenases are largely unclear and little is known about their responses to stress. In this investigation, potato plants (Solanum tuberosum L., cv. Desiree) were sprayed with antimycin A, an inhibitor of the cytochrome pathway. Enzyme capacities of NAD(P)H dehydrogenases (EC 1.6.5.3) and the alternative oxidase were then analysed in isolated leaf mitochondria. Results We report a specific decrease in internal rotenone-insensitive NADH dehydrogenase capacity in mitochondria from antimycin A-treated leaves. External NADPH dehydrogenase and alternative oxidase capacities remained unaffected by the treatment. Western blotting revealed no change in protein abundance for two characterised NAD(P)H dehydrogenase homologues, NDA1 and NDB1, nor for two subunits of complex I. The alternative oxidase was at most only slightly increased. Transcript levels of nda1, as well as an expressed sequence tag derived from a previously uninvestigated closely related potato homologue, remained unchanged by the treatment. As compared to the daily rhythm-regulated nda1, the novel homologue displayed steady transcript levels over the time investigated. Conclusions The internal rotenone-insensitive NADH oxidation decreases after antimycin A treatment of potato leaves. However, the decrease is not due to changes in expression of known nda genes. One consequence of the lower NADH dehydrogenase capacity may be a stabilisation of the respiratory chain reduction level, should the overall capacity of the cytochrome and the alternative pathway be restricted.
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