Product quality plays a vital role in international trade flows, but the measurement of quality remains to be a challenge because true quality is usually unobserved in trade data. In this study, we propose a straightforward measurement of quality--the weighted-income index--and compare it with...

We researched the structural effect of titania photocatalysts on the yield of hydrogen gas from water splitting. We synthesized mesoporous titania thin films (MTTFs) with two different structures (that is, pillar structure and tube structure, denoted as P-MTTFs and T-MTTFs, respectively) through...