Nonextensive/dissipative correspondence in relativistic hydrodynamics

We argue that there is profound correspondence (the nonextensive/dissipative correspondence - NexDC) between the perfect nonextensive hydrodynamics and the usual dissipative hydrodynamics which leads to simple expression for dissipative entropy current.Comment: 4 pages, presented at Symposium NFQCD08 at Kyoto; will be published in Progress of Theoretical Physics (PTP) Supplemen

Bank-specific Determinants of Capital Structure : New Evidence from Japan

This paper is the first empirical research on the determinants of the capital structure of Japanese banks, using Japanese banks’ financial data for two decades from 2000 to 2017 and adding new evidence to previous literature on the banks’ capital structure. Previous researches show that the determinants of capital structure are different among countries or continents. We show that determinants vary and change in accordance with differences in business models among banks even within one country. By focusing on different business models between four sub-samples, “International banks before the Global Financial Crisis,” “Domestic banks before the GFC,” “International banks after the GFC,” and “Domestic banks after the GFC”, we analyze whether the determinants of capital structure differ among these sub-samples. The results are totally different and we find no determinants which can significantly and commonly explain all four sub-samples

Influence of processing sequence on the tribological properties of VGCF-X/PA6/SEBS composites

In order to develop the new tribomaterials for mechanical sliding parts with sufficient balance of mechanical and tribological properties, we investigated the influence of processing sequence on the tribological properties of the ternary nanocomposites: the polymer blends of polyamide 6 (PA6) and styrene-ethylene/butylene-styrene copolymer (SEBS) tilled with vapor grown carbon fiber (VGCF-X), which is one of carbon nanofiber (CNF) and has 15mn diameter and 3 mu m length. Five different processing sequences: (1) VGCF-X, PA6 and SEBS were mixed simultaneously (Process A), (2) Re-mixing (Second compounding) of the materials prepared by Process A (Process AR),(3) SEBS was blended with PA6 (PA6/SEBS blends) and then these blends were mixed with VGCF-X (Process B), (4) VGCF-X was mixed with PA6 (VGCF-X/PA6 composites) and then these composites were blended with SEBS (Process C), and (5) VGCF-X were mixed with SEBS (VGCF-X/SEBS composites) and then these composites were blended with PA6 (Process D) were attempted for preparing of the ternary nanocomposites (VGCF-X/PA6/SEBS composites). These ternary polymer nanocomposites were extruded by a twin screw extruder and injection-molded. Their tribological properties were evaluated by using a ring-on-plate type sliding wear tester under dry condition. The tribological properties such as the frictional coefficient and the specific wear rate were influenced by the processing sequence. These results may he attributed to the change of internal structure formation, which is a dispersibility of SEBS particle and VGCF-X in ternary nanocomposites (VGCF-X/PA6/SEBS) by different processing sequences. in particular, the processing sequences of AR, B and D, which are those of re-mixing of VGCF-X, have a good dispersibility of VGCF-X for the improvement of tribological properties