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| 2. |
- Michaelsen, K F, et al.
(författare)
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The Copenhagen cohort study on infant nutrition and growth : duration of breast feeding and influencing factors.
- 1994
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Ingår i: Acta Paediatrica. - 0803-5253 .- 1651-2227. ; 83:6, s. 565-71
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Tidskriftsartikel (refereegranskat)abstract
- Duration of breast feeding was studied in 249 randomly chosen, healthy, term infants of Danish origin of which 80.7% participated. Breast feeding was initiated by 99.5% of the mothers. At 3, 6 and 9 months, 71%, 52% and 33%, respectively, were still breast feeding. Only 1 infant (0.5%) was exclusively breast fed beyond 7 months of age. In a Cox multiple regression analysis of factors influencing duration of breast feeding, we found a positive association with maternal education (p < 0.001) and age (p = 0.02) and a negative association with the amount of formula given at the maternity ward (p < 0.001). Six months after delivery, 79% of the mothers with higher school education (> or = 12 years) were still breast feeding, compared to 29% with a low school education (< or = 9 years). There is still a need for an increased effort to support mothers in breast feeding, focusing particularly on younger mothers with short school education. Formula supplements during the first days of life, given to 73% of the infants, were associated with a shorter duration of breast feeding and should be discouraged.
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| 4. |
- Chatterjee, M., et al.
(författare)
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Thermal barrier coatings from sol-gel-derived spray-grade Y2O3-ZrO2 microspheres
- 1993
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Ingår i: Journal of Materials Science. - : Kluwer Academic Publishers. ; 28:10, s. 2803-2807
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Tidskriftsartikel (refereegranskat)abstract
- For the development of ceramic thermal barrier coatings, spray-grade yttria-stabilized zirconia microspheres were prepared by the sol-gel technique. Oxide microspheres were obtained by calcination of the corresponding gel spheres at 1000 °C. Scanning electron microscopic and optical microscopic observations revealed the material thus obtained to have a predominantly spherical morphology and the requisite size distribution (5-50 μm). The dense, calcined microspheres showed good flowability. X-ray diffraction studies indicated the presence of the tetragonal polymorph of ZrO2 as the major phase, in addition to about 14% monoclinic ZrO2. The plasma-sprayed YSZ coatings made from the sol-gel-derived microspheres showed a further decrease in the monoclinic ZrO2 content (6%). The coatings survived 40-50 thermal cycles (30 min at 1200 °C followed by a water quench), indicating good thermal shock resistance. © 1993 Chapman & Hall.
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| 5. |
- Das, D. K., et al.
(författare)
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Scratch adhesion testing of plasma-sprayed yttria-stabilized zirconia coatings
- 1991
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Ingår i: Surface and Coatings Technology. ; 46:3, s. 331-345
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Tidskriftsartikel (refereegranskat)abstract
- The suitability of scratch adhesion testing, usually used for determining the critical load for thin hard coatings like TiC and TiN, in characterizing plasma-sprayed yttria-stabilized zirconia coatings is demonstrated. The effects of loading rate and scratching speed on the critical load of these sprayed coatings were studied. Although some peculiarities in acoustic signal-load plot were observed at high values of loading rate and scratching speed, it was found that these intrinsic parameters, at low and medium values, do not have any prominent effect on the critical load. © 1991.
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| 7. |
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| 8. |
- Grundén, Kerstin, 1952-
(författare)
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Människa, organisation, ADB-system : Mot en människoorienterad syn på systemutveckling
- 1992
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The background for this thesis is the author's experience of working as a system analyst during the years 1975-1081. During this period, the system development work can be characterized as expert-oriented, very often leading to the construction of large, integrated EDP-systems. The social consequences of the computerization were unplanned and unforeseen. In the first part of this thesis different system development approaches are presented and analyzed. These approaches are "traditional system development", "socio-technically oriented system development (e g Mumford's ETHICS-model), "a perspective of different interest groups", and finally, "modern system development". These approaches are analyzed from a human-oriented perspective emphasizing the consequences of each tradition regarding possibilities to develop human resources in the work situation. In the second part of the thesis the human-oriented perspective (the MOA-perspective) and the MOA-model are developed. Leavitt's well-known model is taken as a departure for the construction of the MOA-model (MOA= Människa (Human Being), Organisation (Organization), ADB-system (EDP-system). The human-oriented perspective is primarily a theoretical perspective in the field of sociology. Knowledge, mostly from literature studies, has been put together in a logical framework reflecting the interplay between the three levels of analysis "ideas of coordination and steering", "means for cooperation and steering" (e g EDP-systems and organization structure) and "possibilities of development in work for the employee's". The MOA-model illuminates this logic in a wider context of the enterprise. With the use of the MOA-perspective special parts of the MOA-model are focused upon. The theoretical starting-point has been the basis for the development of some practical applications: a structure for development of the enterprise, and a method for analyzing changes within work situations ("job analysis").
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| 9. |
- Hedgran, M, et al.
(författare)
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Barnundersökningen 1980-81
- 1991
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Ingår i: Vår föda. - 0042-2657. ; 43:1, s. 6-7
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 10. |
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