Anomalous momentum dependence of the multiband electronic structure of FeSe_1-xTe_x superconductors induced by atomic disorder

When periodicity of crystal is disturbed by atomic disorder, its electronic state becomes inhomogeneous and band dispersion is obscured. In case of Fe-based superconductors, disorder of chalcogen/pnictogen height causes disorder of Fe 3d level splitting. Here, we report an angle-resolved photoemission spectroscopy study on FeSe_1-xTe_x with the chalcogen height disorder, showing that the disorder affects the Fe 3d band dispersions in an orbital-selective way instead of simple obscuring effect. The reverse of the Fe 3d level splitting due to the chalcogen height difference causes the splitting of the hole band with Fe 3d x^2-y^2 character around the Gamma point.Comment: 5 pages, 4 figure

Endothelin-1 Production by Normal Human Cultured Keratinocytes and its Regulation

The possibility that cultured keratinocytes produce endothelins were investigated. The results showed that cultured keratinocytes derived from normal human skin produce endothelin-1. Moreover, keratinocyte endothelin-1 production was completely inhibited by the presence of actinomycin D in the medium. As in the case of endothelial cells, recombinant interleukin-1β was capable of promoting endothelin-1 production in keratinocytes, whereas herapin inhibited it. Thrombin also inhibited endothelin-1 production. These results indicate that the mechanism of endothelin-1 production in keratinocytes is slightly different from the mechanism in vascular endothelial cells

An educational program for the unit of "Function of Running Water" in Science at the fifth grade using a transparent round shape water tank

We devised the science class using the transparent round shape water tank in the unit of "the function of running water" for the fifth grade of elementary school and practiced it. From a point of view that we control a condition and examine, the aim that we introduced a transparent round shape water tank into the unit is to observe the movement of sand grains carefully and to consider the change of the sand bed form in connecting with the number of times of stir to make water flow. This experiment can be carried out easily without special preparations. The children were able to perform experiments with interests, and to aware of the change in sand bed. Significance to introduce the experiment into the unit rises more by devising consideration of contents