Element Material Exposure Experiment by EFFU

The National Space Development Agency of Japan (NASDA) is planning to perform an 'Element Material Exposure Experiment' using the Exposed Facility Flyer Unit (EFFU). This paper presents an initial design of experiments proposed for this project by our company. The EFFU is installed on the Space Flyer Unit (SFU) as a partial model of the Space Station JEM exposed facility. The SFU is scheduled to be launched by H-2 rocket in January or February of 1994, then various tests will be performed for three months, on orbit of 500 km altitude, and it will be retrieved by the U.S. Space Shuttle and returned to the ground. The mission sequence is shown

Effect of Dietary Protein Restriction and Nutritional Assessment on Early-Stage Diabetic Nephropathy.

We evaluated the effects of a protein-limited diet on renal function, urinary albumin excretion and nutritional status of 16 patients with non-insulin dependent diabetes mellitus (11 males and 5 females, mean age 60.5 years) had a urinary albumin excretion rate of between 15 and 200μg/min and were c1assified into two groups : group Ⅰ patients were placed on a protein-limited diet (0.77g/kg/day), and group Ⅱ followed a conventional diabetic diet (1.33g/kg/day). After six months, the value of creatinine c1earance was significantly reduced in group Ⅰ, but urinary albumin excretion did not change in either group. Anthropometric measurements revealed no significant change in body weight, body mass index, arm circumference or triceps skinfold thickness in either group during the study period, but the arm musc1ec ircumference significantly increased in group Ⅰ. No significant differences were observed in either group with regard to serum level of protein, in c1uding total protein, albumin, prealbumin or transferrin, In conc1usion, a protein-limited diet was useful for prevention of diabetic nephropathy in patients with early-stage diabetic nephropathy

Asymptotic behavior of solutions for damped wave equations with non-convex convection term on the half line

We study the asymptotic stability of nonlinear waves for damped wave equations with a convection term on the half line. In the case where the convection term satisfies the convex and sub-characteristic conditions, it is known by the work of Ueda [7] and Ueda-Nakamura-Kawashima [10] that the solution tends toward a stationary solution. In this paper, we prove that even for a quite wide class of the convection term, such a linear superposition of the stationary solution and the rarefaction wave is asymptotically stable. Moreover, in the case where the solution tends to the non-degenerate stationary wave, we derive that the time convergence rate is polynomially (resp. exponentially) fast if the initial perturbation decays polynomially (resp. exponentially) as x → ∞. Our proofs are based on a technical L 2 weighted energy method

Effects of fluctuated salinity under sea ice on growth rates of some microalgae

第3回極域科学シンポジウム/第34回極域生物シンポジウム 11月26日（月） 国立極地研究所 ３階ラウン

Modified inverse square sensitometry for the determination of the characteristic curve of radiographic screen/film systems.

To determine the characteristic curve of the radiographic screen/film systems in a short focal spot-film distance, the inverse square sensitometric method was modified by changing the radiation intensity with two kinds of filters. The characteristic curves obtained in the two exposure series with these two kinds of filters were overlapped to obtain a complete one. The characteristic curve thus obtained was almost the same as the one obtained by the original inverse square sensitometric method. The accuracy of the characteristic curves obtained by the modified method was well-reflected in the clinical radiographs.</p

Individual and combined effects of noise-like whole-body vibration and parathyroid hormone treatment on bone defect repair in ovariectomized mice

The effectiveness of intermittent administration of parathyroid hormone (iPTH) and exposure to whole body vibration (WBV) on osteoporotic fracture healing has been previously investigated, but data on their concurrent use are lacking. Thus, we evaluated the effects of iPTH, WBV, and their combination on bone repair in osteoporotic mice. Noise-like WBV with a broad frequency range was used instead of conventional sine-wave WBV at a specific frequency. Mice were ovariectomized at 9 weeks of age, and subjected to drill-hole surgery in the right tibial diaphysis at 11 weeks. The animals were divided into four groups (n=12 each): a control group (C), and groups treated with iPTH (P), noise-like WBV (W), and both (PW). From postoperative day 2, the P and PW groups were subcutaneously administered PTH at a dose of 30 µg/kg/day. The W and PW groups were exposed to noise-like WBV at a root mean squared acceleration of 0.3 g and frequency components of 45 to 100 Hz for 20 min/day. Following 18 days of interventions, the right tibiae were harvested, and the regenerated bone was analyzed by micro-computed tomography and nanoindentation testing. Compared with C, callus volume fraction was 40% higher in P and 73% higher in PW and callus thickness was 35% wider in PW. Indentation modulus was 46% higher in W and 43% higher in PW, and hardness was 31% higher in PW compared with C. There was no interaction between the two treatments for both structure and mechanical indexes. The main effects of iPTH and noise-like WBV on bone repair included increased bone formation and enhanced mechanical function of regenerated bone, respectively. The combined treatment resulted in further regeneration of bone with high indentation modulus and hardness, suggesting the therapeutic potential of the combined use of noise-like WBV and iPTH for enhancing osteoporotic bone healing