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Y.Uchihori,Y.Kawamura,S.Morita,A.Kojina,J.M.Sun,Y.J.Kim,T.Izumi,M.Nakaoka 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10
This paper presents a novel prototype of a new concepttonal electromagnetic induction fluid heating appliance with eddy current-based flow-through thin metallic heater assembly, which is composed of the voltage source-fed type phase-shifted PWM series-load resonant high-frequency inverter using IGBT modules and thek driver modules in addition to a temperature sensor, and an auto-tuning PID gain controller for precise and stable temperature regulation scheme.<br/> In particular, the efficient series capacitor-compensated load resonant high-frequency inverter system with a power factor correction and active sinewave line current shaping functions is introduced as this induction-heated fluid heating appliance in pipeline used for industrial, medical, chemical, consumer power processing apphca-tions.<br/> Its operating characteristics in steady-state are illustrated and evaluated in experiment and its computer simulation results. The promising cost effective applications of this induction-heated fluid-heating appliance are mentioned from a practical point of view.
Hydrothermally deposited PbTiO3 epitaxial thin film
T. Morita,Y. Cho 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
A hydrothermal method is a unique method to deposit ferroelectric thin lms by utilizing chemical reaction in solutions. In addition to the low reaction temperature below 200 C, its simple process procedure, automatically aligned polarization and three-dimensional deposition are advantages. In this study, a lead titanate epitaxial thin lm was obtained on a strontium ruthenate bottom electrode sputterd on strontium titanate (100). High-resolution X-ray diraction mapping showed that the lm was perfectly c-axis-oriented. Transmission electron microscope observation revealed that the lm had no lattice dislocation at the interface between lead titanate and strontium ruthenate. A remanent polarization of 96.5 C/cm2 was measured with a single-crystal-like DE hysteresis curve. Observation by scanning nonlinear dielectric microscopy indicated that this lm did not contain any defect such as an a-domain or a grain boundary, even on the nano scale. With various pulse parameters, nano-domain dots were patterned and the minimum dot radius of an inverted domain was 12 nm, corresponding to a data storage density of 1 Tbit/inch2.
THE EFFICIENCY OF UTILIZATION OF METABOLIZABLE ENERGY OF MILK-REPLACER-FED CALVES AT WEANING PERIOD
Sekine, J.,Morita, Z.,Oura, R.,Morooka, T.,Asahida, Y. Asian Australasian Association of Animal Productio 1988 Animal Bioscience Vol.1 No.4
A total of 22 energy balance trials were done for calves fed a liquid milk replacer, calf starter and second cut mixed hay during weaning period. Milk replacer supplied 50% of the total dietary energy, calf starter 42% and hay 8% Live weight of calves averaged 64.6 ($S.D.{\pm}7.8$) kg and daily gain 0.54 (${\pm}0.22$) kg. The metabolizability of gross energy averaged 0.751. A regression was calculated relating energy retention (ER, $kJ/kg^{0.75}$) to the intake of metabolizable energy (IME, $kJ/kg^{0.75}$): $$ER=0.69({\pm}0.09)IME-395,\;r=0.888,\;P<0.01,\;S.E.{\pm}7.1$$. Metabolizable energy for maintenance (MEm) was calculated to be $572kJ/kg^{0.75}$ when ER = 0. The amount of IME over MEm for an individual animal (MEg, $kJ/kg^{0.75}$) was regressed on average daily gain (ADG, kg) by the method of regression through the origin: $$MEg=364({\pm}55)ADG,\;r=0.634,\;P<0.01,\;S.E.{\pm}12$$. The amount of ME required for maintenance and growth was estimated to be $936kJ/kg^{0.75}$.
WATER TURNOVER OF GROWING CATTLE FED FRESH CUT GRASS OR HAY AND GRAZED ON PASTURE
Sekine, J.,Morita, Z.,Asahida, Y. Asian Australasian Association of Animal Productio 1988 Animal Bioscience Vol.1 No.3
Water turnover and consumption of steers fed either fresh cut grass or hay and water turnover of steers grazed in summer or in fall were determined using 18 Holstein steers weighing 226 to 382 kg. Steers consumed 7.0 or 7.5 kg of dry-matter from hay or fresh cut grass. Animals fed hay drank significantly more water than those given fresh cut grass (P<0.01). Total water consumption, however, was greater in steers fed fresh cut grass than those given hay (P<0.05). Water turnover was about the same as total water consumption with a tendency for slightly higher values in water turnover irrespective of feeding regimes. Steers grazed in summer had greater water turnover than those grazed in fall. Water turnover was about the same in steers fed fresh cut grass and grazed in summer but decreased in steers on the dry ration or grazing in a cool season of the year.