Vanishing Next-to-Leading Corrections to the \beta-Function of the SUSY CP^{N-1} Model in Three Dimensions

We study the ultraviolet properties of the supersymmetric CP^{N-1} sigma model in three dimensions to next-to-leading order in the 1/N expansion. We calculate the \beta-function to this order and verify that it has no next-to-leading order corrections.Comment: 8 pages, 1 figure, the renormalization constant of the field alpha is correcte

Deformed Type 0A Matrix Model and Super-Liouville Theory for Fermionic Black Holes

We consider a ${\hat c}=1$ model in the fermionic black hole background. For this purpose we consider a model which contains both the N=1 and the N=2 super-Liouville interactions. We propose that this model is dual to a recently proposed type 0A matrix quantum mechanics model with vortex deformations. We support our conjecture by showing that non-perturbative corrections to the free energy computed by both the matrix model and the super-Liouville theories agree exactly by treating the N=2 interaction as a small perturbation. We also show that a two-point function on sphere calculated from the deformed type 0A matrix model is consistent with that of the N=2 super-Liouville theory when the N=1 interaction becomes small. This duality between the matrix model and super-Liouville theories leads to a conjecture for arbitrary $n$-point correlation functions of the N=1 super-Liouville theory on the sphere.Comment: 18 pages, no figur

Estimation of response of steel sheet plated with thin hard layer

Elastic and elastic-plastic responses were examined of cantilevers made from a cold rolled steel sheet and made from the same sheet plated with a thin hard layer. Tension test of these sheets showed a non-linear behaviour even in the area of small strain and conventional linear theory of cantilever had to be modified. By extending this theory to a sheet plated with a thin hard layer Young’s modulus of plated layer was estimated. The range of estimated Young’s modulus was similar to those in previous works but material non-linearity, especially on the compression side, must be measured more precisely

Prevention of downhill walking-induced muscle damage by non-damaging downhill walking

Purpose: Mountain trekking involves level, uphill, and downhill walking (DW). Prolonged DW induces damage to leg muscles, reducing force generating ability and muscle coordination. These increase risks for more serious injuries and accidents in mountain trekking, thus a strategy to minimize muscle damage is warranted. It has been shown that low-intensity eccentric contractions confer protective effect on muscle damage induced by high-intensity eccentric contractions. This study tested the hypothesis that 5-min non-damaging DW would attenuate muscle damage induced by 40-min DW, but 5-min level walking (LW) would not. Methods: Untrained young men were allocated (n = 12/group) to either a control or one of the two preconditioning groups (PRE-DW or PRE-LW). The PRE-DW and PRE-LW groups performed 5-min DW (-28%) and 5-min LW, respectively, at 5 km/h with a load of 10% body mass, 1 week before 40-min DW (-28%, 5 km/h, 10% load). The control group performed 40-min DW only. Maximal knee extension strength, plasma creatine kinase (CK) activity, and muscle soreness (0±100 mm visual analogue scale) were measured before and 24 h after 5-min DW and 5-min LW, and before and 24, 48, and 72 h after 40-min DW. Results: No significant changes in any variables were evident after 5-min DWand 5-min LW. After 40- min DW, the control and PRE-LW groups showed significant (PP Conclusions: The results supported the hypothesis and suggest that performing small volume of downhill walking is crucial in preparation for trekking

Plutonium concentration and 240Pu/239Pu atomic ratio in liver from

財団法人 日本分析センター元・金沢大学大学院自然科学研究科金沢大学環日本海域環境研究センター地球環境計測研究部門金沢大学理学部Plutonium isotopes, 239Pu and 240Pu, were measured in liver samples from Surume squid using a sector-field high resolution ICP-MS after radiochemical purification. Surume squid samples were obtained from nine landing ports in Japanese inshore during fishery season from September to December 2002. Concentrations of 239Pu and 240Pu ranged from 1.5 to 28 mBq kg-1 and 1.1 to 24 mBq kg-1, respectively. Plutonium (239,240Pu) concentrations in liver were several thousand times higher than levels found in seawater. The concentration factor (CF) compared to seawater for 239,240Pu and 13 other elements ranged from 100 to 107. The CF values for 239,240Pu, V and Th were 102-104. Pu had an intermediate CF between conservative and scavenged elements. 240Pu/239Pu atomic ratios in the squid liver ranged from 0.177 to 0.237 which were slightly higher than 0.178 ± 0.014 for global fallout. The variations of 240Pu/239Pu atomic ratios in ocean currents with different source functions are important for interpreting high 240Pu/239Pu atomic ratios in Surume squid liver. It seems likely that Pu with high 240Pu/239Pu atomic ratio is continuously transported through the solubilization and seawater transport from the North Equatorial Current to Kuroshio and its branch, Tsushima Current. By assuming that Pu found in Surume squid liver is a mixture of global fallout Pu (0.178) and close-in fallout Pu with high 240Pu/239Pu atomic ratio (0.30-0.36) around Bikini Atoll, Pu contribution from Bikini close-in fallout Pu accounts for close to 35% of the whole plutonium in Surume squid liver. These results highlight that Surume squid is a useful organism for evaluating environmental Pu levels of larger sea area and facilitate the development of models to understand oceanic transport of close-in fallout Pu from Bikini Atoll. © 2007 Elsevier Ltd. All rights reserve

Shear Box Tests with Measurement of Suction on Undisturbed Samples of Daisen Kurayoshi Pumice

Shear strength characteristics of a volcanic cohesive soil, Daisen Kurayoshi Pumice (DKP), which is a representative problematic soil in Japan, are complicated because of its partial saturation and inhomogeneous nature. A direct shear box testing machine was newly developed to measure the suction in both stages of consolidation and shearing. Direct shear tests were carried out under a normal stress lower than the consolidation yield stress pc. The results showed that: (1) shear strengths were different between specimens although they were tested under a particular normal stress; (2) however, the difference was rationally explained by using the variables of the suction and the normal stress measured below the base of the shear box that is fixed in the vertical direction; and (3) the relationship between the shear strength and the suction was non-linear