Phosphate glasses dissociating hydrogen from water vapor were prepared and their performance was evaluated. Glasses with compositions of 30Na 2 O-10BaO-30P 2 O 5 -(30Kx)Nb 2 O 5 -xWO 3 (5!x!25) dissociated water vapor into hydrogen and oxygen around 500 8C. The best dissociation performance was observed on a specimen with the tungsten composition of xZ15. The result suggests that the coexistence of Nb 2 O 5 and WO 3 is important in obtaining a high performance of hydrogen dissociation. When Nb 2 O 5 was replaced by other transition metal oxides such as MoO 3 , the amount of hydrogen dissociation decreased by one-third. q

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Resting-state (rs) fMRI has been widely used to examine brain-wide large-scale spatiotemporal architectures, known as resting-state networks (RSNs). Recent studies have focused on the temporally evolving characteristics of RSNs, but it is unclear what temporal characteristics are reflected in the networks. To address this issue, we devised a novel method for voxel-based visualization of spatiotemporal characteristics of rs-fMRI with a time scale of tens of seconds. We first extracted clusters of dominant activity-patterns using a region-of-interest approach and then used these temporal patterns of the clusters to obtain voxel-based activation patterns related to the clusters. We found that activation patterns related to the clusters temporally evolved with a characteristic temporal structure and showed mutual temporal alternations over minutes. The voxel-based representation allowed the decoding of activation patterns of the clusters in rs-fMRI using a meta-analysis of functional activations. The activation patterns of the clusters were correlated with behavioral measures. Taken together, our analysis highlights a novel approach to examine brain activity dynamics during rest.

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