Type III procollagen and collagen might be important extra-cellular matrix resulting in neointimal formation and vascular remodeling in the pathogenesis of portal hypertensive vasculopathy. The pathological changes in splenic arteries and veins exist in portal hypertension patients. There might be an interaction between portal hypertension, splanchnic hyperdynamic circulation and splanchnic vasculopathy.

Heterogeneous catalysis for Friedel-Crafts type benzylation has received much attention in recent years due to its characteristic of environmental benefits. In this paper, titanate nanotubes (TNTs) were employed as heterogeneous catalyst support, and a new kind of Fe3+-exchanged titanate nanotubes (Fe-TNTs) catalyst with highly dispersed ferric sites was constructed by an ion exchange technique. The obtained catalyst was systematically characterized by XRD, TEM, N2adsorption, XPS, and UV-vis spectra. As expected, Fe-TNTs showed excellent catalytic activities in the benzylation of benzene and benzene derivatives. The recycling tests for Fe-TNTs were also carried out, where the reason for the gradually decreased activity was carefully investigated. Superior to some reported catalysts, the catalytic ability of used Fe-TNTs could be easily recovered by ion exchange again, indicating that Fe-TNTs herein were a highly active and durable heterogeneous catalyst for Friedel-Crafts type benzylation. These results might be helpful for the design and preparation of novel heterogeneous catalysts by combining the structural advantages of titanate nanotubes and active metal ions.

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We have successfully obtained highly isolated Co 2+ active sites on the surface of titanate nanotubes (TNTs) by a simple ion-exchange process. The as-prepared Co-TNTs were applied in heterogeneous catalysis to generate powerful radicals from peroxymonosulfate (PMS) for the removal of recalcitrant pollutant. Under the same conditions, Co-TNTs exhibited better degradation efficiency of Rhodamine B (RhB) than conventional CoFe 2 O 4 and Co 3 O 4 . Some potential influential factors and recycling application were systematically investigated. We believe Co-TNTs may be an efficient and green heterogeneous catalyst for the degradation of organic pollutants, and this study provides insights into the rational design and development of alternative catalysts for wastewater treatment.

Measurements of thermal conductivity and electrical conductivity of Platinum-Iridium alloys at different compositions are performed. The thermal conductivities measured by the electrical-heating method and the cross-wire geometry agree well with each other. For the binary alloys with Ir compositions of 6 at.% to 15 at.%, the thermal conductivity varies linearly with temperature, which can be related to the electrical counterpart by using the classical Simth-Palmer formula. The lattice component of the thermal conductivity is found to be nearly composition-independent, contributing to about 20~25% of the total thermal conductivity.