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| 2. |
- Arvidsson, M, et al.
(författare)
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Identification of factors influencing dispersion in split-plot experiments
- 2001
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Ingår i: Journal of Applied Statistics. - 0266-4763 .- 1360-0532. ; 28:3-4, s. 269-283
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Tidskriftsartikel (refereegranskat)abstract
- As split-plot designs are commonly used in robust design it is important to identify factors in these designs that influence the dispersion of the response variable. In this article, the Bergman-Hynen method, developed for identification of dispersion effects in unreplicated experiments, is modified to be used in the context of split-plot experiments. The modification of the Bergman-Hynen method enables identification of factors that influence specific variance components in unreplicated two-level fractional factorial split-plot experiments. An industrial example is used to illustrate the proposed method.
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| 3. |
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| 4. |
- Hansson, B. T., et al.
(författare)
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Pump-mode influence on the performance of end-pumped passively Q-switched lasers
- 2002
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Ingår i: Journal of Optics. A, Pure and applied optics. - : IOP Publishing. - 1464-4258 .- 1741-3567. ; 4:1, s. 29-32
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Tidskriftsartikel (refereegranskat)abstract
- We present a simple way of adjusting the output performance of end-pumped passively Q-switched lasers. The method is based on changing the size of the pump mode within the active medium, and the approach is demonstrated both in theory and in practice. We show that it is possible to modify the repetition rate from 7 kHz to 1 MHz and the pulse length from 6 to 30 ns for the laser used in the experiments.
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| 5. |
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| 6. |
- Skedung, Lisa, et al.
(författare)
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Tribology, texture and touch
- 2014
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Ingår i: 5th World Tribology Congress, WTC 2013. - 9781634393522 ; , s. 2270-2273
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Konferensbidrag (refereegranskat)
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| 7. |
- Van Odijk, Jenny, 1969, et al.
(författare)
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The Use of DAO as a Marker for Histamine Intolerance: Measurements and Determinants in a Large Random Population-Based Survey
- 2023
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Ingår i: Nutrients. - 2072-6643. ; 15:13
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Tidskriftsartikel (refereegranskat)abstract
- Histamine intolerance (HIT) is a common adverse reaction to food where elimination and reintroduction of histamine-rich food is part of the investigation. Analysis of the enzyme diamine oxidase (DAO) is sometimes used as an additional tool for diagnosis. This study aimed to describe the distribution of DAO in a large representative cohort of adults and to determine the association between DAO activity and possible associated factors. The study is based on the population-based West Sweden Asthma Study and includes 1051 subjects. Subjects underwent structured interviews including questions on demography, asthma, allergy symptoms, and lifestyle factors. Subjects were assessed for specific-IgE-antibodies and measurement of DAO activity in serum. Previously suggested cut-off levels for low values (<3 U/mL), normal values (>10 U/mL), and median levels of DAO were used. In the group of 1051 subjects, only a few presented reactions upon histamine intake, whereas 44% presented DAO levels below the suggested normal cut-off levels. BMI and age were shown to have an impact on DAO activity among women with increasing activity of DAO with increasing BMI and age. Among men, only increasing age was seen to have an impact on DAO levels. There was no difference in DAO levels with different sensitization status to common foods or airborne allergens. No association between DAO levels and reported symptoms to histamine-rich foods could be found. In conclusion, the determination of the DAO enzyme needs to be re-evaluated and may not be used as a valuable tool for histamine intolerance using current cut-off values. Further studies are needed to improve the use of DAO as a biomarker for histamine intolerance.
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