3,221 research outputs found
Trade Liberalization and Trade Performance of Environmental Goods: Evidence from Asia-Pacific Economic Cooperation Members
In this article, we study the impact of trade liberalization, including reductions in both tariff and nontariff trade barriers, on environmental goods (EGs) exports. Using bilateral trade data from 20 Asia-Pacific Economic Cooperation members, we find that tariff reduction in an exporting country has a larger positive impact on its exports of EGs than tariff reduction in an importing country. Our results also show that a lower nontariff barrier in an importing country increases its imports of EGs. A considerable amount of heterogeneity also exists in subsample results based on countries’ income levels
Enhancing Hydrogen Generation Through Nanoconfinement of Sensitizers and Catalysts in a Homogeneous Supramolecular Organic Framework.
Enrichment of molecular photosensitizers and catalysts in a confined nanospace is conducive for photocatalytic reactions due to improved photoexcited electron transfer from photosensitizers to catalysts. Herein, the self-assembly of a highly stable 3D supramolecular organic framework from a rigid bipyridine-derived tetrahedral monomer and cucurbit[8]uril in water, and its efficient and simultaneous intake of both [Ru(bpy)3 ]2+ -based photosensitizers and various polyoxometalates, that can take place at very low loading, are reported. The enrichment substantially increases the apparent concentration of both photosensitizer and catalyst in the interior of the framework, which leads to a recyclable, homogeneous, visible light-driven photocatalytic system with 110-fold increase of the turnover number for the hydrogen evolution reaction
Probing dynamics of dark energy with latest observations
We examine the validity of the CDM model, and probe for the dynamics
of dark energy using latest astronomical observations. Using the
diagnosis, we find that different kinds of observational data are in tension
within the CDM framework. We then allow for dynamics of dark energy
and investigate the constraint on dark energy parameters. We find that for two
different kinds of parametrisations of the equation of state parameter , a
combination of current data mildly favours an evolving , although the
significance is not sufficient for it to be supported by the Bayesian evidence.
A forecast of the DESI survey shows that the dynamics of dark energy could be
detected at confidence level, and will be decisively supported by the
Bayesian evidence, if the best fit model of derived from current data is
the true model.Comment: 4.5 pages, 3 figures, 1 table; references adde
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