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- Andersson, Mats R., et al.
(författare)
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Electroluminescence from Substituted Poly(thiophenes) : From Blue to Near-Infrared
- 1995
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Ingår i: Macromolecules. - : American Chemical Society. - 0024-9297 .- 1520-5835. ; 28:22, s. 7525-7529
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Tidskriftsartikel (refereegranskat)abstract
- We report a systematic approach to the control of the conjugation length along the poly(thiophene) backbone. The planarity of the main chain can be permanently modified by altering the pattern of substitution and character of the substituents on the poly(thiophene) chain, and the conjugation length is thus modified. We obtain blue, green, orange, red, and near-infrared electroluminescence from four chemically distinct poly(thiophenes). The external quantum efficiencies are in the range of 0.01-0.6%.
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| 8. |
- Carlsson, A., et al.
(författare)
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Prevalence of coeliac disease in Turner syndrome
- 1999
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Ingår i: Acta Pædiatrica. - 1651-2227 .- 0803-5253. ; 88, s. 933-
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Tidskriftsartikel (refereegranskat)abstract
- This study was undertaken to investigate the prevalence of coeliac disease in children and adolescents with Turner syndrome. Eighty-seven children and adolescents with Turner syndrome were screened for IgA- antiendomysium antibodies (EMA) and IgA-antigliadin antibodies (AGA), 5% (4/87) being found to be EMA-positive, and 15% (13/87) to have AGA levels above normal. Of the 10 patients who were either AGA- or EMA-positive and further investigated with intestinal biopsy, four manifested villous atrophy (i.e. all three of the EMA-positive patients, but only one of the seven AGA- positive patients). The results suggest EMA-positivity to be a good immunological marker for use in screening for coeliac disease, and such screening to be justified in patients with Turner syndrome.
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- Nilsson, K O, et al.
(författare)
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Improved final height in girls with Turner's syndrome treated with growth hormone and oxandrolone.
- 1996
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Ingår i: Journal of Clinical Endocrinology and Metabolism. - : The Endocrine Society. - 0021-972X .- 1945-7197. ; 81, s. 635-
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Tidskriftsartikel (refereegranskat)abstract
- The spontaneous growth process in Turner's syndrome is characterized by a progressive decline in height velocity during childhood and no pubertal growth spurt. Therefore, therapy aimed at improving height during childhood as well as increasing final height is desirable for most girls with Turner's syndrome. Forty-five girls with Turner's syndrome, 9-16 yr of age (mean age, 12.2 yr), were allocated to three study groups. Group 1 (n = 13) was initially treated with oxandrolone alone; after 1 yr of treatment, GH without (group 1a; n = 6) or with (group 1b; n = 7) ethinyl estradiol was added. Group 2 (n = 17) was treated with GH plus oxandrolone. Group 3 (n = 15) was treated with GH, oxandrolone, and ethinyl estradiol. The dosage were: GH, 0.1 IU/kg.day; oxandrolone, 0.05 mg/kg.day; and ethinyl estradiol, 100 ng/kg.day. A height of 150 cm or more was achieved in 61%, 75%, and 60% of the girls in groups 1, 2, and 3, respectively. The most impressive increase in height was seen in group 2. In this group the mean final height was 154.2 cm (SD = 6.6), which is equivalent to a mean net gain of 8.5 cm (SD = 4.6) over the projected final height. In group 3, in which ethinyl estradiol was included from the start of therapy, the initially good height velocity decelerated after 1-2 yr of treatment. Their mean final height was 151.1 (SD = 4.6) cm, equivalent to a mean net gain of 3.0 cm (SD = 3.8). A similar growth-decelerating effect of ethinyl estradiol was seen in group 1b. We conclude that in girls with Turner's syndrome who are older than 9 yr of age, treatment with GH in combination with oxandrolone results in significant growth acceleration, imitating that in normal puberty, leading to a more favorable height during childhood. This mode of treatment also results in a significantly increased final height, permitting a great number of the girls to attain a final height of more than 150 cm. However, early addition of estrogen decelerates the height velocity and reduces the gain in height.
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- Akner, Gunnar, 1953-, et al.
(författare)
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Glucocorticoid receptor inhibits microtubule assembly in vitro.
- 1995
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Ingår i: Molecular and cellular endocrinology. - : Elsevier BV. - 0303-7207 .- 1872-8057. ; 110:1-2, s. 49-54
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Tidskriftsartikel (refereegranskat)abstract
- The effect of glucocorticoid hormones, purified glucocorticoid receptor (GR) and purified heat shock protein M(r) 90,000 (hsp90) on microtubule (MT) assembly in vitro was tested by a spectrophotometric MT assembly assay and electron microscopy. GR significantly prolonged the nucleation phase, slowed down the assembly rate and reduced the maximal amplitude of MT assembly compared with control. The effects were partially reversed by the addition of glucocorticoid hormone. GR associated with MTs. These results indicate that GR affects MT assembly in vitro, which may be a functional correlate to the structural association of GR with MTs. This implies that factors affecting GR may affect MT assembly in vivo.
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- Andersson, Mats R., et al.
(författare)
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Synthesis of poly(alkylthiophenes) for light-emitting diodes
- 1995
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Ingår i: Synthetic metals. - : Elsevier. - 0379-6779 .- 1879-3290. ; 71:1-3, s. 2183-2184
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Tidskriftsartikel (refereegranskat)abstract
- We have demonstrated a general way to tune the emission of poly(alkylthiophenes) by using steric interaction between the repeating units. Light-emitting diodes prepared of the polymers have blue to near-infrared emission.
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- Becker, Wulf, et al.
(författare)
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Precoded food records compared with weighed food records for measuring dietary habits in a population of Swedish adults
- 1998
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Ingår i: Scandinavian Journal of Nutrition/Næringsforskning. - : Informa UK Limited. - 1102-6480 .- 1651-2359. ; 42:1, s. 145-149
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Tidskriftsartikel (refereegranskat)abstract
- In a cross-over design, 82 women and men recorded their food intake by a precoded 7-day record book (PR) including both standard portions in household measures and photographs, and a weighed 7-day record (WR), respectively. Single 24-h urine samples, for determination of nitrogen excretion, were collected for 39 subjects during the WR period. Comparing the PR to the WR method, the mean intake of some foods, as cheese, was higher, and bread and vegetables lower. For energy and nutrients, the fat energy percent (E%) was higher, and protein E%, dietary fibre, iron, thiamin, folate, carotene and α-tocopherol were all lower. Protein intake registered by the PR method was 20% lower compared to 24-h urine samples, and 11% lower for the WR method. The results indicate that some of the standard portion sizes, used by the PR method, contributed to the observed differences in food and nutrient intakes. The subjects found it easier and less time-consuming to record their food intake with the PR than with the WR method. The time spent on processing data was reduced by 50% when using the PR method. The results of the study will be used for improvements in the design of the PR for use in large-scale dietary surveys for monitoring dietary habits.
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| 25. |
- Blomqvist, O., et al.
(författare)
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Non-geometric Plackett-Burman Designs in Conjoint Analysis - A Way to Improve Predictions
- 1998
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Ingår i: INFORMS.
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Bokkapitel (refereegranskat)abstract
- In their paper they use a non-geometric design to generate the concepts. Non-geometric designs represents a class of orthogonal designs that when the assumption of effect sparsity is valid, i.e. that only a few of the attributes actually influence the respondents' preferences, provide an opportunity to analyze interactions between attributes as well as the attributes themselves. In this article the use of non-geometric Plackett-Burman designs for conjoint analysis is advocated. Also, a procedure based on restricted all subsets regression for taking advantage of the special characteristics of the non-geometric designs is proposed and demonstrated using data from a conjoint study performed on cellular phone antennas in Sweden. Blomkvist, Ekdahl and Gustafsson also conducted a Monte Carlo simulation to further illustrate the properties of the proposed procedure and the use of non-geometric Plackett-Burman designs for conjoint analysis
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