Über Cocarboxylase-Wirkung der Triphosphorsäureester eines niedrigeren und eines höheren Thiaminhomologen
作者:P. Karrer、R. Schwyzer、K. Kostić
DOI:10.1002/hlca.19500330612
日期:——
die entsprechenden Triphosphorsäureester III bzw. IV dargestellt und auf Cocarboxylase Wirkung geprüft. DerTriphosphorsäureester des Homothiaminchlorids war ungefähr 4mal weniger wirksam als Cocarboxylase bzw. Thiamin-triphosphorsäureester, derTriphosphorsäureester des 2′-Desmethyl-thiaminchlorids zeigte nur unbedeutende Cocarboxylase-Wirksamkeit. Die Cocarboxylase-Aktivität der genannten drei Verbindungen
Matsukawa, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1942, vol. 62, p. 417,443;dtsch.Ref.S.122,125
作者:Matsukawa
DOI:——
日期:——
Does Age Change the Distribution of Visual Attention? A Comment on McCalley, Bouwhuis, and Juola (1995)
作者:F. W. Cornelissen、A. C. Kooijman
DOI:10.1093/geronb/55.3.p187
日期:2000.5.1
A paper, by McCalley, Bouwhuis, and Juola (1995) suggested differences between younger and older adults in the use of visual cues. Furthermore, they reported these differences could largely be attributed to diminished (peripheral al) visual proressing capacities of elderly adults. I-It re, we reanalyze the data of McCalley and colleagues emphasizing relative rather than absolute differences. We find that when doing so, the data do not reveal differences in the way older and younger adults transiently allocate attention during visual search. Contrary to the conclusions of McCalley and colleagues, the similarity between the younger and older observers is therefore independent of the characteristics of the visual information. Furthermore, in our view the data suggest that older adults have foveal rather than peripheral visual processing difficulties. The results reemphasize the importance of the analytical approach taken in aging research, We discuss the difficulties and relevance of controlling and separating visual and attentional factors in age-related studies.
Some Analogs of Thiamin and their Physiological Activity<sup>1</sup>
作者:Gustav A. Stein、W. L. Sampson、J. K. Cline、Joseph R. Stevens