Water Absorptiveness of Paper Labels

D 1584 Test Method for Water Absorptiveness of Paper Labels (Intent to Withdraw)... [Pg.512]

Volume Resistivity Water Absorptiveness (of Paper Labels) Weathering Wedge Test Working Life... [Pg.851]

Photosynthetic water oxidation to dioxygen takes place in a Mn-containing protein in PSH via Kok s intermediates, labeled Sq-S [1]. These S-states probably reflect different redox states of some or all of four Mn ions involved in the enz3rme-substrate(H20) complex. The molecular structure and oxidation states of this Mn-cluster in each S-state has been the subject of considerable recent spectroscopic studies involving EPR[2-5]and X-ray absorption[6,7]. In this paper, we present high-quality Mn K-edge XANES spectra measured for spinach PSH membranes in Si and S2 states, which exhibit informative pre-edge feature due to Is to 3d transition as well as four fine structures superimposed on the principal absorption band. These features are semi-empirically analized in comparison with those of authentic Mn complexes. Based on the results obtained, we propose a hypothetical model for the Mn-cluster which is compatible with EPR data[2-5] in S2-state. [Pg.801]

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