9 research outputs found
Dietary factors and their associations with socioeconomic background in Finnish girls and boys 6–8 years of age: the PANIC Study
Full text linkAusfall und Selektivitäten in den NEPS Startkohorten: ein Überblick über die letzten 8 Jahre
No full textReceptive vocabulary of preschool children with migration backgrounds: the effect of home literacy activities
No full textNonparametric Multiple Imputation for Questionnaires with Individual Skip Patterns and Constraints: The Case of Income Imputation in the National Educational Panel Study
No full textFretting behaviour of self-piercing riveted aluminium alloy joints under different interfacial conditions
No full textThe fretting behaviour of self-piercing riveted aluminium alloy joints with three different interfacial conditions has been investigated in this study, The fatigue life of the joints was observed to be dependent on the fretting behaviour under different interfacial conditions. The presence of a wax-based solid surface lubricant on the surface of the aluminium alloy sheet could delay the onset of fretting damage leading to longer fatigue life. Inserting PTFE tape at the interface between the two riveted sheets led to the reduction and even elimination of fretting damage in a self-piercing riveted joint. However, the presence of PTFE tape at the interface resulted in a significant reduction in the fatigue life and led to a change in the failure mode. The effect of the frictional force during the fretting fatigue process of a self-piercing riveted joint is also discussed. (c) 2004 Elsevier Ltd. All rights reserved
Effects of lunch on children’s short-term cognitive functioning: a randomized crossover study
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