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1.
K NOMURA H SHIOZAWA T TAKADA H REUTHER E RICHTER 《Journal of Materials Science: Materials in Electronics》1997,8(5):301-306
SnO2 gas-sensor films were modified by implantation of gold and iron ions. The change in electrical resistivity of the films caused
by inflammable gases, H2, CO, CH4 and C2H5OH, was measured in the temperature range 100–500°C, and compared to non-implanted films. The morphological changes caused
by gold and iron ion implantation were also investigated by atomic force microscopy. After ion implantation and annealing
at 600°C, the sensitivity to H2 and CO gas was found to increase, and the dynamic range of the sensitivity to ethanol was improved. The sensitivity to CH4 was low before and after ion implantation. Fe2O3 (3%SnO2) film was also modified by gold ion implantation for comparison.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
2.
The Si(001)surface has attracted much attention because of its practical importance in most LSI devices t11at are fabricated on this surface.However,recent STM studies performed at low temperatures(LT)questioned whether the c(4x2)phase is the most stable phase. 相似文献
3.
Muhammad AGUNG Shinfuku NOMURA Shinobu MUKASA Hiromichi TOYOTA Otsuka KAZUHIKO Hidekazu GOTO 《等离子体科学和技术》2017,19(5)
The objectives of this research were to understand the process of converting toluene into phenol in a one-step process directly from a water–toluene mixture using the plasma in-liquid method.Experiments were conducted using 27.12 MHz radio frequency(RF) in-liquid plasma to decompose a solution of 30% toluene. Based on the experimental results as evaluated using gas chromatography–mass spectrometry(GC–MS), along with additional analysis by the Gaussian calculation, density functional theory(DFT) hybrid exchange–correlational functional(B3LYP)and 6-311 G basis, the phenol generated from toluene was quantified including any by-products.In the experiment, it was found that OH radicals from water molecules produced using RF inliquid plasma play a significant role in the chemical reaction with toluene. The experimental results suggest that phenol can be directly produced from a water–toluene mixture. The maximum phenol yields were 0.0013% and 0.0038% for irradiation times of 30s and 60s,respectively, at 120 W. 相似文献
4.
ABSTRACT This paper summarizes the main results of our study carried out under the priority-area research “Energy Conversion and Utilization with High Efficiency” supported by the grant-in-aid of scientific research from the Ministry of Education, Science and Culture of Japan. In the research we focused on applications of solar energy utilization for industrial drying systems. In this paper a new concept of a closed drying system with superheated steam provided from a temperature boosting type heat pump (absorption type heat transformer) was proposed. The heat transformer is driven directly by heat from a solar collector. The performance for different three drying periods and a number of factors affecting it were predicted by a computer simulation. Furthermore the heat and mass transfer characteristics of water evaporation into superheated steam stream by radiative and convective heating were indicated experimentally. It was concluded that the system would be useful for industries where high temperature (over 100°C) drying is required. 相似文献
5.
S. J. JANG L. E. CROSS K. UCHINO S. NOMURA 《Journal of the American Ceramic Society》1981,64(4):209-212
Ceramic dielectrics which have been fabricated in the Pb(Mg1/3 Nb2/3 )O3 :PbTiO3 :Ba(Zn1/3 Nb2/3 )O3 composition system are shown to exhibit two distinct dielectric maxima, both of which show the characteristic loss spectra of ferroelectrics with diffuse phase transitions. The height of the individual maxima can be controlled by the Zn:Mg ratio in the starting material and, in suitably chosen compositions, a wide range of almost temperature-independent high dielectric permittivity is possible. These dielectrics show strong electrostrictive deformations under high electric fields but the electrostrictive strain is much less temperature-sensitive than in other relaxors. 相似文献
6.
This paper summarizes the main results of our study carried out under the priority-area research “Energy Conversion and Utilization with High Efficiency” supported by the grant-in-aid of scientific research from the Ministry of Education, Science and Culture of Japan. In the research we focused on applications of solar energy utilization for industrial drying systems. In this paper a new concept of a closed drying system with superheated steam provided from a temperature boosting type heat pump (absorption type heat transformer) was proposed. The heat transformer is driven directly by heat from a solar collector. The performance for different three drying periods and a number of factors affecting it were predicted by a computer simulation. Furthermore the heat and mass transfer characteristics of water evaporation into superheated steam stream by radiative and convective heating were indicated experimentally. It was concluded that the system would be useful for industries where high temperature (over 100°C) drying is required. 相似文献
7.
本文研究用还原法溶解毛发,回收具有再生成双硫键效力的可溶性蛋白质,建立一个衡量制革用动物毛发的标准。 相似文献
8.
MICHIKO FUCHIGAMI KOICHI MIYAZAKI NORIKO HYAKUMOTO TAKAKO NOMURA JUNZO SASAKI 《Journal of food science》1995,60(6):1260-1264
Differences were investigated in texture, drip and pectic composition of raw or blanched Chinese cabbage midribs and leaves after conventional (F) or program freezing (PF). Softening of tissues and amount of drip were least to greatest: PF-5°C/min < PF-2°C/min < F-35°C < F-20°C, respectively. Freezing-thawing accelerated release of pectin but the freezing rate did not affect pectin release much. Total pectin in raw midribs was less than in raw leaves. The leaves contained more low methoxyl pectin than midribs, but the high methoxyl pectin was almost the same. Cell damage in frozen-thawed midribs and leaves by light-and electron-microscopy appeared extensive. 相似文献
9.
Renaturation of α1 chains from shark skin collagen (1) was measured by the increase in optical rotation and viscosity. The rotation change of the α1(1) chains became constant after 18 hr, while the viscosity increased further with time. Size exclusion chromatographic patterns of renaturation products of α1 (I) chain gave similar results to that of native collagen. The renaturation products remelted with rising temperature in a similar way to the melting of native collagen as judged from the rotation-temperature curve. 相似文献
10.
HIROSHI?NOMURA SANDEEP?PAREKH J. ROBERT?SELMAN SAID?AL-HALLAJEmail author 《Journal of Applied Electrochemistry》2005,35(11):1121-1126
Electrostatic spray deposition (ESD) was applied to fabricate a thin-layer of yttria-stabilized zirconia (YSZ) electrolyte
on a solid oxide fuel cell (SOFC) anode substrate consisting of nickel-YSZ cermet. A colloidal solution of 8 mol% YSZ in ethanol
was sprayed onto the substrate anode surface at 250–300 °C by ESD. After sintering the deposited layer at 1250–1400 °C for
1–2 h depending on temperature, the cathode layer, consisting of lanthanum strontium manganate (LSM), was sprayed or brush
coated onto the electrolyte layer. Performance tests and AC impedance measurements of the complete cell were carried out at
800 °C to evaluate the density and conductance of the electrolyte layer formed by ESD. With a 97% H2/3% H2O mixture and air as fuel and oxidant gas, respectively, the open-circuit voltage (OCV) was close to theoretical and electrolyte
impedance was about 0.23Ω cm2. A power density of 0.45 W cm−2 at 0.62 V was obtained. No abnormal degradation was observed after 170 h operation. The electrolyte sintering temperature
and time did not significantly affect the electrolyte impedance.
on leave from 相似文献