Development of Cutting Condition Monitoring System for ID-blade Saw Slicing Machine

1 Introduction There are two ways ,the multi-wire sawslicing method and the inner-diameter blade slicing method,re-cently used for cutting wafers froma single crystal ingot . Multi-wire sawbecomes more popular iningot slicingprocesses ,because it has an advantage for slicinglarge diameter or long siliconingot and has efficiency for massproduction.However ,this method is difficult to control the wire cutting the ingot along its crystal orientationandit is less correspond to the request of some …     

Thermochromism in Reduced Phosphate Glasses

Coloring and bleaching of reduced phosphate glasses in the systems K₂O-B₂O_r Al₂O₃-P₂O₅ and K₂O-Al₂O₃-P₂O₅, containing no silver halide, were studied. The as-cast glasses, which are colorless and transparent, become tinged with red when they are reheated at high temperatures for long times. The bleached specimens (PTC-RP glass) are obtained by heating at >600°C, then quenching. The PTC-RP glasses exhibit coloring phenomena by irradiation of light or by heating above 200°C; the colored glasses are again bleached thermally. Coloring of the glasses by heating is described in this paper in terms of phase change within the colloidal phosphorus formed in the glasses. The apparent activation energy for the thermocoloring is estimated to be ∼15×10⁴ J/mol (35 kcal/mol).     

考虑土、上部结构和桥台相互作用的桥台抗震性能研究

 在以往的桥梁设计中并不考虑基础提离和地基土屈服等土与桥台相互作用对桥台地震反应的影响。因此,为了研究桥台在地震中的抗震性能,采用Newmark时程分析方法对考虑土、上部结构和桥台相互作用的由扩展基础支撑的桥台进行分析。采用离散的质点–弹簧模型对土、上部结构和桥台系统进行建模。利用非线性模型,模拟上部结构和桥台的碰撞反应、桥台背部填土及地基土的弹塑性反应,并采用Winkler地基梁模型模拟地基土与桥台基础的相互作用。分析结果表明,桥台基础的提离作用可以减弱桥梁上部结构及桥台在强烈地震中的反应,减小桥台墙身底部在强震作用下发生的塑性变形,起到一定的减震隔震效果。同时,桥台底部土的屈服减小了传递到桥台底部塑性铰处的弯矩,进一步增强了桥台基础提离的效果。然而,由地基土屈服引起的永久性沉降也造成桥台基础的倾斜。因此,在桥梁的抗震设计中,必须考虑桥台基础的提离和地基土的屈服等土与结构相互作用对桥台抗震性能的影响。     

Activities of Enzymes of Sugar Metabolism in Gamma-Irradiated Potato Tubers

The sucrose content of potato tubers was increased by gamma-irradiation. The activities of enzymes responsible for sugar metabolism in irradiated potato tubers were measured during storage after irradiation. The activities of phosphorylase, sucrose synthase and sucrose phosphate synthase were significantly enhanced by irradiation and remained at a high level while sucrose was accumulated in irradiated tubers. The activities of phosphoglucomutase and phosphoglucose isomerase were little influenced by irradiation. The activity of UDP-glucose pyrophosphorylase was enhanced slightly by irradiation and decreased to a level lower than unirradiated tubers depending upon irradiation dose.     

Modelling of Edge Plasma on JT-60U Tokamak by Using SOLPS5.0 code

The edge plasma transport code SOLPS5.0 is used for modelling edge plasmas in the experimental shots on JT-60U tokamak and the proles of the radial particle and heat transport coecients D, e and i along the outer midplane have been obtained by tting the code results to the experimental measurement in L-mode shot 39090 and H-mode shots 37851, 37856. The experimental measurement used for tting includes the proles of electron temperature and density along the outer midplane, the pumping speed, the total particle ux from the core boundary to the computational region and the ux density of neutrals near the outer wall. The modelling and tting results show within the pedestal region in H-mode shots 37851 and 37856 the radial particle transport coecient D has larger drop, but, for L-mode shot 39090, the obvious drop of D and e has not been found.     

Fixed-interval smoothing for a linear distributed parameter system

The fixed-interval smoothing estimator for a linear distributed parameter system with a noisy observation at discrete points on the spatial domain or its boundary is derived from the Wiener-Hopf theoretical viewpoint. The present derivation of the smoothing estimator is based on the Wiener-Hopf theory. Thus, using the Wiener-Hopf equations both for the optimal smoothing problem and for the optimal filtering problem, the optimal fixed-interval smoothing estimator which corresponds to the results obtained by using Kalman's limiting procedure is derived. Finally, for the convenience of the numerical computation, we rewrite the results for the optimal fixed-interval smoothing estimator and the error covariance function by using the Fourier expansion method.     

超级电容器驱动小型电动车的车辆运动稳定性控制研究

近年来随着双电荷层式超级电容器(Electric DoubleLayer Capacitor:EDLC)能量密度的迅速增加,其应用受到了广泛的关注.与一般电动车采用的蓄电池相比,EDLC具有使用中不进行化学反应、可进行大电流充电,并且能够正确把握剩余能量等优点,非常适合现代电动汽车的使用要求.本文介绍了Hori研究室进行的EDLC驱动电动汽车(EV)—"Capaciror-COMS"(C-COMS)的开发工作及相关的稳定性控制研究.利用EDLC的快速充电特性及电机控制的优势,Hori研究室在该小型电动车上更方便地开展了各种车辆稳定性方法的试验研究.     

Accumulation of Sucrose in Gamma-Irradiated Sweet Potato Roots

The effect of storage conditions on the sucrose content of gamma-irradiated sweet potato roots was studied. The sucrose content was influenced mainly by the temperature and oxygen content of the atmosphere. The degree of sucrose accumulation decreased, as the oxygen content of the atmosphere was reduced, while it increased with increase of temperature. The best conditions for the accumulation of sucrose were an irradiation dose of 1 kGy and a storage temperature of 30°C. The sucrose content of the roots which were irradiated and stored under the above conditions exceeded 12% on a fresh weight basis.     

High-Pressure Synthesis of Perovskites Pb(Li1/4Nb3/4)O3 and Pb(Li1/4Ta3/4)O3

Complex perovskite-type compounds with the general formula Pb(B⁺_1/4B⁵⁺_3/4)O₃, where B⁺= Li⁺ and B⁵⁺= Nb⁵⁺ or Ta⁵⁺, were synthesized using a high-pressure technique and studied by X-ray powder diffraction. The X-ray patterns were indexed on the basis of a cubic cell with a ₀= 4.071 Å for Pb(Li_1/4 Nb_3/4)O₃ and a ₀= 4.052 Å for Pb(Li_1/4Ta_3/4)O₃. Electrical properties of the new perovskites were also studied.