Energy level statistics in weakly disordered systems: from quantum to diffusive regime

We calculate two-point energy level correlation function in weakly disorderd metallic grain with taking account of localization corrections to the universal random matrix result. Using supersymmetric nonlinear sigma model and exactly integrating out spatially homogeneous modes, we derive the expression valid for arbitrary energy differences from quantum to diffusive regime for the system with broken time reversal symmetry. Our result coincides with the one obtained by Andreev and Altshuler [Phys. Rev. Lett. 72, 902 (1995)] where homogeneous modes are perturbatively treated.Comment: 12 pages, no figure, REVTeX 3.1 with pLaTeX 2e; v2: minor grammatical change

Physical properties of the Dome Fuji deep ice core (review)

Recent results of physical analyses of the Dome Fuji ice core are summarized with special attention to new methods introduced in the present studies. Microphysical processes which affect the ice core records are reviewed to better understand the paleoclimatic and paleoenvironmental signals stored

Predictive factors of mortality of patients with fragility hip fractures at 1 year after discharge : A multicenter, retrospective study in the northern Kyushu district of Japan

Purpose: Fragility hip fractures (FHFs) are associated with a high risk of mortality, but the relative contribution of various factors remains controversial. This study aimed to evaluate predictive factors of mortality at 1 year after discharge in Japan. Methods: A total of 497 patients aged 60 years or older who sustained FHFs during follow-up were included in this study. Expected variables were finally assessed using multivariable Cox proportional hazards models. Results: The 1-year mortality rate was 9.1% (95% confidence interval: 6.8–12.0%, n = 45). Log-rank test revealed that previous fractures (p = 0.003), Barthel index (BI) at discharge (p = 0.011), and place-to-discharge (p = 0.004) were significantly associated with mortality for male patients. Meanwhile, body mass index (BMI; p = 0.023), total Charlson comorbidity index (TCCI; p = 0.005), smoking (p = 0.007), length of hospital stay (LOS; p = 0.009), and BI (p = 0.004) were the counterparts for females. By multivariate analyses, previous vertebral fractures (hazard ratio (HR) 3.33; p = 0.044), and BI <30 (HR 5.42, p = 0.013) were the predictive variables of mortality for male patients. BMI <18.5 kg/m2 (HR 2.70, p = 0.023), TCCI ≥5 (HR 2.61, p = 0.032), smoking history (HR 3.59, p = 0.018), LOS <14 days (HR 13.9; p = 0.007), and BI <30 (HR 2.76; p = 0.049) were the counterparts for females. Conclusions: Previous vertebral fractures and BI <30 were the predictive variables of mortality for male patients, and BMI <18.5 kg/m2, TCCI ≥5, smoking history, LOS <14 days, and BI <30 were those for females. Decreased BI is one of the independent and preventable risk factors. A comprehensive therapeutic approach should be considered to prevent deterioration of activities of daily living and a higher risk of mortality

The measurement of velocities of P and S waves in boreholes at Mizuho Station and Minami-Yamato Nunataks, East Antarctica

At Mizuho Station (70°42\u27S, 44°20\u27E) velocity profiles of P and S waves down to a depth of 208m were measured on 30 July and 1 August 1983,the waves were generated by hitting an iron block set on the snow surface and traveled waves were detected by geophones set in boreholes. It was revealed that the velocities of P and S waves continuously increased with depth. At Minami-Yamato Nunataks, velocities of both waves were obtained down to a depth of 100m in a bare ice region on 29 December 1983. The obtained velocities were constant from the surface to a depth of 100m, being 3.83km・s^ for P wave and 2.01km・s^ for S wave. P and S wave velocities at a depth of 100m at both sites were compared. It was found that the P wave velocity was almost the same at both sites, whereas the S wave velocity at Minami-Yamato Nunataks was larger than that at Mizuho Station, in spite of nearly identical ice density at both sites. The difference in the S wave velocity is discussed on the basis of difference in the crystal orientation

Temperature Profile in the Bare Ice Area Near the Yamato Mountains, Antarctica

The temperature profile of the ice sheet in the bare ice area (Meteorite Ice Field) near the Yamato Mountains (72°S, 36°E) was calculated on the basis of the heat conduction theory under the steady state condition. The effect of the geothermal heat flux, the vertical velocity of ice mass and the ice thickness on the temperature profile was examined. The analysis of the profile in the past stages of the ice sheet fluctuation showed that before the Fukushima ice stage (about (10)^4 years B.P.) the upward velocity and the ablation rate were approximately zero or the downward motion of ice mass and accumulation might have occurred. This result is completely different from the present state (upward velocity 5cm/year and ablation rate 5cm/year), which suggests that most of the Yamato meteorites collected in 1969-1975 were exposed on the surface of the area after the Fukushima stage

Some Information on Topographic Features and the Characteristics of the Ice Sheet around the Yamato Mountains

Some information and suggestions for future field and theoretical works for meteorite search and glaciology in the Yamato Mountains region, Antarctica are presented based on the preliminary mapping of surface features of the ice sheet by interpretation of aerial photographs and compilation of previous works. A considerably large extent of bare ice areas may be concerned with both regional and local topographies of the ice sheet. Several minor features are distinguished, mapped and described in connection with the movement of ice. The slope of marginal part of the ice sheet at its maximum stage is inferred from glacial topographies of the Yamato Mountains and coastal ice-free areas and from the continental shelf. The results are not conclusive but to be tested by future works. This, in its turn, may be useful as a kind of framework for future field works