地方中核都市圏における都市構造と軌道系路面公共交通システム事業性の総合評価モデルに関する研究

取得学位：博士(工学)，学位授与番号：博甲第1105号，学位授与年月日：平成21年3月23

Spatio-temporal structures in sheared polymer systems

We investigate spatio-temporal structures in sheared polymer systems by solving a time-dependent Ginzburg-Landau model in two dimensions. (i) In polymer solutions above the coexistence curve, crossover from linear to nonlinear regimes occurs with increasing the shear rate. In the nonlinear regime the solution behaves chaotically with large-amplitude composition fluctuations. A characteristic heterogeneity length is calculated in the nonlinear regime. (ii) We also study dynamics of shear-band structures in wormlike micellar solutions under the condition of fixed stress. The average shear rate exhibits large temporal fluctuations with occurrence of large disturbances in the spatial structures.Comment: 16pages, 10figures, to be published in Physica

MNCO3 ノ ネツ ブンカイ カテイ ニ オヨボス アツリョク ノ エイキョウ

The thermal decomposition process of manganous carbonate was studied by means or DTA under atmosphere of N_2,CO_2,and air. An endothermic peak appeared at 378℃ and an exothermic peak between 580 and 800℃ in atmospheric air were not reported till now. This endothermic peak became smaller with decreasing pressure and dissappeared at 100 mmHg.[chemical formula]Only one endothermic peak on the DTA curve under atmosphere of CO_2,and N_2 was observed

No Significant Differences Were Observed in the Amounts of DNA Strand Breaks Produced by Copper between Male and Female Liver Cells of Long-Evans Cinnamon（LEC) Strain Rats

肝炎を自然発症するLECラットの肝細胞に蓄積する銅による酸化損傷と考えられるDNA単鎖切断の量をコメット法で検出した。LECラットの肝臓では4週齢でコントロールとして用いたWKAHの30倍の銅が蓄積していた。4週齢から15週齢では雄、雌ともに週齢に依存して肝臓の銅の蓄積量は増加したが、WKAHラットでは週齢による増加は認められなかった。LECラットの肝臓でのDNA単鎖切断の量は10週齢から15週齢まで週齢に依存して急激に増加した。肝炎発症は雌が雄に比べて頻度が高いことが報告されているが、肝細胞における雌のDNA単鎖切断の量は雄に比べて大きな違いは認められなかった

スイサンカ ニッケル ノ ネツ ブンカイ カテイ

The thermal decomposition of nickel hydroxide was investigated. The decomposition of binary metal hydroxides of the brucite type is usually represented by the equation M (OH)_2=MO+H_2O. The decomposition of nickel hydroxide followed this equation. The effects of the kinetics of reactions, the type solid→solid+gas, on the corresponding differential thermal analysis pattern were explored. The activation energy of nickel hydroxide by differential thermal measurement was 59 Kcal/mole, and the reaction order was 0.9

Hepatic iron Accumulation Is Not Directly Associated with Induction of DNA Strand Breaks in the Liver Cells of Long-Evans Cinnamon（LEC) Rats

肝炎を自然発症するLECラットにおいてDNA単鎖切断に及ぼす銅の蓄積の影響を調べた。LECラットの肝臓において銅と鉄は4週齢から15週齢に蓄積した。低鉄食で飼育したラットでは鉄の蓄積は認められなかったが、銅の蓄積は普通食のラットと同様量認められた。肝細胞のDNA単鎖切断の量はcomet法を用いて検出した。テールが認められた細胞の頻度とテールの長さの平均値を求めたところ、低鉄食を与えたLECラットの肝細胞と普通食を与えたLECラットの間にほとんど違いは認められなかった。これらの結果からLECラットの肝細胞におけるDNA損傷の誘発には鉄の蓄積は関与していないことが示唆された

50-nm Gate Schottky Source/Drain p-MOSFETs With a SiGe Channel

Abstract-We propose new SiGe channel p-MOSFETs with germano-silicide Schottky source/drains (S/Ds). The Schottky barrier-height (SBH) for SiGe is expected to be low enough to improve the injection of carriers into the SiGe channel and, as a result, current drivability is also expected to improve. In this letter, we demonstrate the proposed Schottky S/D p-MOSFETs down to a 50-nm gate-length. The drain current and transconductance are 339 A m and 285 S m at GS = DS = 1 5 V, respectively. By increasing the Ge content in the SiGe channel from 30% to 35%, the drive current and transconductance can be improved up to 23% and 18%, respectively. This is partly due to the lower barrier-height for strained Si 0 65 Ge 0 35 channel than those for strained Si 0 7 Ge 0 3 channel device and partly due to the lower effective mass of the holes

Radioprotective Effect of Alk(en)yl Thiosulfates Derived from Allium Vegetables against DNA Damage Caused by X-Ray Irradiation in Cultured Cells: Antiradiation Potential of Onions and Garlic

To evaluate a radioprotective effect of sodium n-propyl thiosulfate (NPTS) and sodium 2-propenyl thiosulfate (2PTS) derived from onions and garlic, respectively, rat hepatoma H4IIE cells and mouse lymphoma L5178Y cells were preincubated with each of these compounds for 48 hours at 37°C before receiving 10 Gy of X-ray irradiation. Cell damage caused by the irradiation was quantified as comet tail moment, which represents the degree of DNA damage. X-ray-induced DNA damage was significantly decreased in both H4IIE and L5178Y cells by micromolar concentrations of NPTS and 2PTS compared with the control without the compounds. The protective effect was more potent with 2PTS than NPTS. Onions and garlic have antiradiation potential

CU(OH)2 ノ DTA ニヨル ダッスイ カテイ

The thermal dehydration of Cu(OH)_2 has been studied by many investigators. The reported DTA curves were not in good agreement and the dehydration process was not investigated in detail. In this study the thermal dehydration process of Cu(OH)_2 under CO_2,N_2,Air and reduced pressure has been investigated in ditail by means of DTA, TG, DSC, X-ray and surface area measurement. The heat of the dehydration and the activation energy on the dehydration of Cu(OH)_2 were calculated by various method and these values were compared each other. The dehydration temperature of Cu(OH)_2 was 157℃ under atmosphere N_2,760mmHg. The DTA of Cu(OH)_2 has not been studied under N_2,CO_2 and reduced pressure. The DTA of Cu(OH)_2 under various pressure (760mmHg→5mmHg) was measured and the dehydration temperature was gradually shifted to lower temperature with decreasing pressure. A new exothermic peak appeared at 230℃ after the endothermic peak. This exothermic peak has not been reported. This peak hight became to maximum under the pressure of 460mmHg and became smaller with decreasing pressure and then disappeared under the pressure of 5mmHg. This peak was considered to be due to the crystalization of CuO on the result of X-ray analysis. The activation energy on the dehydration of Cu(OH)_2 were calculated 11.1 kcal/mole by using the DTA method, 9. 9 kcal/mole by the TG method and the heat of the dehydration of Cu(OH)_2 were calculated 14.8 kcal/mole by the DTA method, 11.4 kcal/mole by the DSC method. The specific surface area and the particle size of Cu(OH)_2 mesuared by using the BET technique were 34m^2/g, 250Å respectively. The specific surface area was increased with proceeding the decomposition reaction. This specific surface area became to maximum value, 103m^2/g at decomposition rate 90% and decreased to 66 m^2/g at decomposition rate, 100%. The particle size was decreased with the proceeding decomposition rate and this particle size became to minimum value, 46 Å at decomposition rate, 90%