[Effect of planned dental treatment on the state of the dentition in workers of Lublin printing plants according to certain indices].
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By the year 2020, 25% of the American population will be fifty-five or older. As this population ages, changes within the aging eye will necessitate changes in the way we present text, since approximately 85% of all learning occurs through vision. Educators need to become aware of these changes and begin designing written materials that can communicate effectively with this population. This paper includes information about some of the problems associated with the aging eye and design strategies that can enable the older adult to continue learning, working, and enjoying the written word.
The efficacy of 4 commercial cleansing products was tested with 3 colouring agents widely used in the dyeing industry in a randomised double blind trail involving 8 workers each time. A between-detergents statistically significant difference was observed; the interaction (detergents x colouring agents) was significant. The efficacy of type A detergent was higher for type I-III dyers, while the efficacy of type C detergent, which widely used was lowest.
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