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91.
Yoshihide Fujisaki Hiroto Sato Tatsuya Takei Toshihiro Yamamoto Hideo Fujikake Shizuo Tokito Taiichiro Kurita 《Journal of the Society for Information Display》2008,16(12):1251-1257
Abstract— An organic thin‐film‐transistor (OTFT) driven color flexible ferroelectric‐liquid‐crystal (FLC) display with 160 × 120 pixels and a resolution of 50 ppi has been developed. The flexible FLC was fabricated on a pentacene‐OTFT array using printing and lamination techniques. To drive the display at a fast driving speed, an OTFT was developed with a short channel length having a large current output. The fabricated OTFT array with a channel length of 5 μm exhibits a carrier mobility of 0.3 cm2/V‐sec and an ON/OFF ratio of over 107 at a low drain voltage of ?6 V. A field‐sequential‐color system with a flexible backlight unit was also developed and used to drive the display. Color moving images were successively shown on the 5‐in. display using an active‐matrix driving technique of the OTFT. 相似文献
92.
Satoko Honda Ryuki Tanaka Guren Matsumura Naruhito Seimiya Kuniharu Takei 《Advanced functional materials》2023,33(44):2306516
Flexible sensors that can be attached to the body to collect vital data wirelessly enable real-time, early-stage diagnosis for human health management. Wearable sweat sensors have received considerable attention for real-time physiological monitoring. Unlike conventional methods that require blood-drawing in a clinic, sweat analyses may enable noninvasive tracking of health conditions for early-stage diagnosis. Even though a variety of studies to monitor metabolites and other substances have been conducted, automatic, continuous, long-term, simultaneous monitoring of perspiration rate and electrolytes, which are important parameters in dehydration, has yet to be achieved because of challenges related to sensor design. Here a wireless, wearable, integrated, microfluidic sensor system that can continuously measure these parameters in real-time for prolonged periods are presented. The proposed sensors are systematically characterized, and machine learning is used to predict device tilt angle to calibrate sensor output signals. Using the sensor design to form a water droplet in a fluidic channel, high-volume perspiration rate is continuously monitored for more than 7000 s (total sweat volume >170 µL). By testing 10 subjects, physiological responses to ingestion of a sports drink are confirmed by measuring perspiration rhythm changes extracted from real-time, continuous sweat impedance and rate. 相似文献
93.
A. Rinoshika M. Takei Y. Tomita Y. Saito K. Horii 《Particulate Science and Technology》2004,22(2):107-118
A wavelet multi-resolution cross-correlation analysis was developed and applied to experimental pressure-time signals in order to analyze the characteristics of swirling gas-solid flow in both Fourier and physical spaces. The experiment was carried out in a horizontal pipe with a length of 7.5 m and an inner diameter of 76 mm. The initial swirl number based on the total inflow was varied from 0.0 to 0.61, the mean gas velocity was varied from 6 to 28 m/s, and the solid mass flow rate was varied from 0.08 to 0.5. From the wavelet multi-resolution correlation analysis of the fluctuating pressure in the range of low air velocity, the characteristics of swirling gas-solid two-phase flows were extracted at various frequencies. Much stronger correlations were found in the range of low frequency, which implied periodic motion of dunes and sliding clusters. Additionally, it was revealed that the motion of a large cluster sliding flow contains two smaller clusters and the moving velocities of dunes were 1 m/s and 2 m/s, respectively. However, no correlation existed at smaller scales of correlation features, which indicated heterogeneous suspension flow. 相似文献
94.
Futoshi Furuta Hiroshi Kageyama Ken Takei Mutsuko Hatano Katsumi Matsumoto Masahiro Maki Toshio Miyazawa 《Journal of the Society for Information Display》2010,18(6):454-460
Abstract— A flexible‐printed‐cable (FPC) free liquid‐crystal‐display (LCD) panel by using a capacitive‐coupling technique has been developed. A QQVGAeight‐color image was successfully displayed for the first time without attaching any signal or power cables to the panel. The receiving circuitry and capacitive‐coupling electrodes were integrated on the LCD panel using a low‐temperature polysilicon (LTPS) fabrication process. In the proposed digital coding method, the receiving circuit converts derivative waveform signals via the capacitive coupling to conventional logic‐level signals. The maximum data rate of 2.4‐Mbps × 3ch (RGB) was achieved. In addition, LTPS low‐capacitance diode bridge and regulator enabled us to obtain stable DC power of 2.4 mW on the panel from the AC‐power signal. This study is the first step towards integrating the wireless‐communication function on the display panel to achieve a high‐value‐added flat‐panel display (FPD). 相似文献
95.
Naoki Kobayashi Kenichi Tanomura Akihisa Takei Tsukushi Hara Kaoru Koyanagi 《Electrical Engineering in Japan》1999,128(3):31-42
Application of controlled series capacitors with antiparallel thyristor combination across the capacitor segment is a new and promising countermeasure for enhancement of power system stability. The line reactance can be directly controlled by the controlled series capacitors; hence, it is very effective to apply the capacitors for damping power system disturbances. However, the segmented series capacitors may cause subsynchronous resonance (SSR) that can lead to turbine‐generator shaft failure and electrical instability at oscillation frequencies lower than normal system frequency as well as the conventional capacitor may cause. In this paper, we describe the following. (1) The response of turbine‐generator shaft torque is analytically discussed when the number of inserted series capacitors in the power system is changed. (2) It is proposed for SSR countermeasure that the control system will be designed to avoid the number of series capacitor segments which may cause SSR in addition to selecting better on‐off timing of series capacitors. (3) The effects of the proposed countermeasures are confirmed by the results of EMTP simulations using both simplified two‐mass shaft model and detailed five‐mass shaft model of turbine‐generator. © 1999 Scripta Technica, Electr Eng Jpn, 128(3): 31–42, 1999 相似文献
96.
Y. Ozawa N. Takeda T. Miyakawa M. Takei N. Hirayama N. Takegawa 《Aerosol science and technology》2016,50(2):173-186
A particle trap laser desorption mass spectrometer (PT-LDMS) has been developed for the online measurements of the chemical composition of submicron aerosol particles. The PT-LDMS was evaluated by both laboratory and ambient measurements, with the focus being the quantification of sulfate aerosols. Ammonium sulfate ((NH4)2SO4) is generally the predominant form of sulfate aerosols in urban air; hence, it is used as a material for laboratory experiments and calibration. Major fragments of (NH4)2SO4 were observed at mass-to-charge ratios (m/z) of 48 (SO+) and 64 (SO2+). The dependence of sensitivity (expressed as the ratio of m/z 48 signal to sulfate mass) on laser power and cell temperature was investigated. An intercomparison of PT-LDMS with a commercial sulfate particle analyzer (SPA) and filter sampling was performed in Tokyo. Good agreement was observed between SPA and filter analysis (slope = 0.98, r2 = 0.99). Although the mass concentration of sulfate measured by PT-LDMS exhibited a tight correlation with that measured by SPA, the mass concentration measured by PT-LDMS tended to underestimate that measured by SPA (slope = 0.70, r2 = 0.96). While the discrepancy can be mainly attributed to the difference in size cut between PT-LDMS (approximately PM1) and SPA (PM2.5), differences in vaporization efficiency were also found to be important.
Copyright © 2016 American Association for Aerosol Research 相似文献
97.
Takayuki Takei Masahiro Yoshida Yasuo Hatate Kouichiro Shiomori Shiro Kiyoyama Toshio Tsutsui Kei Mizuta 《应用聚合物科学杂志》2008,109(2):763-766
Concern for the environment has increased interest in reducing the amount of pesticides applied to agricultural land. This can be accomplished by immobilization of the pesticides in polymer supports, which prevents volatilization, degradation and leaching losses, and provides controlled release of the pesticides. In the present study, acetamiprid, a novel pesticide, was enclosed in polylactide (PLA)-based microspheres using solvent evaporation method via oil-in-oil (O/O) emulsion. Amount of acetamiprid released from PLA microspheres was less than 5% in phosphate buffered saline. On the other hand, incorporation of water-soluble polymer, such as poly(ethylene glycol) (PEG) and poly(oxyethylene) diglycolic acid, into the PLA microspheres resulted in increased amount of released acetamiprid (∼70%). Planting hole application by greenhouse pot test demonstrated that the efficacy of the PLA/PEG microspheres enclosing acetamiprid against cotton aphids was superior to that of PLA microspheres enclosing acetamiprid. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 相似文献
98.
99.
100.
Y Oyama KS Hirata T Kajita T Kifune K Kihara M Nakahata K Nakamura S Ohara N Sato M Takita Y Totsuka Y Yaginuma M Mori A Suzuki K Takahashi T Tanimori M Yamada M Koshiba T Suda K Miyano H Miyata H Takei K Kaneyuki Y Nagashima Y Suzuki EW Beier LR Feldscher ED Frank W Frati SB Kim AK Mann FM Newcomer Van Berg R W Zhang 《Canadian Metallurgical Quarterly》1989,39(6):1481-1491