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151.
Takuya Oyaidu 《Thin solid films》2008,516(5):604-606
Silicon nitride (SiNx) and silicon oxynitride (SiOxNy) films have been formed by catalytic chemical vapor deposition (Cat-CVD) method using hexamethyldisilazane (HMDS). Addition of NH3 gas and increase in gas pressure can prevent carbonization of tungsten (W) catalyzer. These SiOxNy films have high gas barrier ability compare to the case of SiOxNy films using SiH4 and thus are expected for novel sealing films. 相似文献
152.
Takuya Niikawa Chika Hagino Eri Nishi Ryosuke Kawachi Kotaro Minato Yoshinobu Takada 《IEEJ Transactions on Electrical and Electronic Engineering》2012,7(2):190-196
To clarify the motor function of the infant tongue during sucking, we developed an artificial nipple that contained multiple small built‐in force sensors integrated with a PC‐based system which is capable of measuring tongue–artificial nipple contact pressures in real time. The force sensor is a cantilever structure with a small, thin stainless steel beam where an all‐purpose foil strain gauge is attached to the surface of the beam. An artificial nipple made of an elastomer containing these sensors is connected through an amplifier and an A/D converter to a PC via a USB port. Using this system, measurements were taken in three infants whose oral feeding was well established and in one infant of low birth weight. The results from each force sensor showed a pressure waveform of a nearly simple harmonic motion that indicated a peristalsis‐like movement of the tongue; the sucking frequency was found to be about two times per second. In addition, in the low‐birth‐weight infant, the pressure changed as the infant grew. © 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. 相似文献
153.
ET Sayed Y Saito T Tsujiguchi N Nakagawa 《Journal of Bioscience and Bioengineering》2012,114(5):521-525
It was revealed that the dry powder yeast extract (YE) has the ability to act as a biocatalyst as well as a mediator in a biofuel cell. The yeast extract, from Nihon Pharmaceutical Co., Ltd., was used as a biocatalyst in an open air cathode biofuel cell containing phosphate buffer for glucose oxidation. The anode medium with only the YE showed an immediate activity by producing a current and delivering power depending on its concentration. By adding glucose to the anode medium, the anode potential decreased with time to -0.2?V vs. normal hydrogen electrode (NHE), and produced a higher power compared to that without glucose. The biofuel cell produced an open circuit voltage (OCV) as high as 1?V. 相似文献
154.
Koseki T Okuda M Sudoh S Kizaki Y Iwano K Aramaki I Matsuzawa H 《Journal of Bioscience and Bioengineering》2003,96(3):232-241
155.
Gustavo M. do Nascimento Taige Hou Yoong Ahm Kim Hiroyuki Muramatsu Takuya Hayashi Morinobu Endo Noboru Akuzawa Mildred S. Dresselhaus 《Carbon》2011,(11):3585-3596
The effects of two different halogen dopants (bromine and iodine) at different concentrations on the higher frequency modes (the so-called G and G′ bands) of the Raman spectra of double-wall carbon nanotube (DWCNT) “buckypaper” are investigated. The effects of dopants on different DWCNT configurations (metallic inner/semiconducting outer and vice versa) are studied by changing the laser excitation energy. The doping causes the loss of the Breit–Wigner–Fano line shape and the appearance of less metallic behavior. An increase of the relative intensity of the G+ band, which is more sensitive for the outer metallic tubes, is clearly observed with increasing Br2 concentration in the sample. By analysis of the G+ band and the G′ band it is possible to measure the changes in the electron–phonon coupling, due to the charge-transfer between the dopant (Br2 or I2) and the tubes in the DWCNT. The doping effect causes an upshift of the G+ band and a suppression of the contribution of the inner tubes to the G′ band signal and as a consequence, the observed G′ band is dominated by the contribution from the outer tubes. 相似文献
156.
Seiichi Deguchi Toshinori Takeichi Shoji Shimasaki Muneaki Ogawa Norifumi Isu 《American Institute of Chemical Engineers》2011,57(8):2237-2243
To enhance photocatalytic water splitting, various oxidizing sacrifice agents (OSA) have been added to the system in order to scavenge the coproduced O2, and, thus, to hinder the reverse reactions. In the aim of achieving carbon‐neutral photocatalytic water splitting, nonfood hydrocarbons of castor‐ and jojoba‐oils were evaluated as OSA. Moreover, various surfactants were tested as emulsifiers for W/O binary solution for promoting photocatalytic water splitting rate. Among the OSA used, the castor‐oil was found to be more suitable candidate compared to jojoba‐oil, which was attributed to its smaller carbon chain numbers of mainly 18. Without surfactants, around 20 vol %‐castor‐oil aqueous binary solution with TiO2/Pt(0.10 wt %) provided the highest water splitting rate of about 30 mL‐H2/(m2·h). Among tested surfactants, liquid‐detergent was the best due to its optical transparency. 40 vol %‐ or 60 vol %‐castor‐oil emulsion with a drop of liquid‐detergent resulted in a water splitting rate of 125 mL‐H2/(m2·h), which was four times greater that the aforementioned highest value. © 2010 American Institute of Chemical Engineers AIChE J, 2011 相似文献
157.
Polyynes were prepared from pellets of a perylene derivative, 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA), and graphite by liquid-phase laser ablation, using solvents of methanol, ethanol, 1-propanol, 1-butanol, t-butyl alcohol, n-hexane, and decalin. The amounts of polyynes produced from PTCDA strongly depended on the polarity of the solvent, while those from graphite did not. Polar functional groups of acid-anhydride side chains in PTCDA are believed to influence the amounts of C2 radicals produced by laser ablation. The long-chain polyyne C28H2 was detected in a chromatogram of a solution obtained from a graphite pellet and solvent decalin. 相似文献
158.
Tokihiro Ikeda Yasuyuki KanaiYoshio Iwai Takao M. KojimaKazuhiro Maeshima Walter MeisslTomohiro Kobayashi Takuya Nebiki So MiyamotoGrigory P. Pokhil Tadashi NarusawaNaoko Imamoto Yasunori Yamazaki 《Surface & coatings technology》2011,206(5):859-863
We have developed a method to produce micro/nano meter sized beams of keV energy highly charged ions (HCIs) and MeV energy protons/He ions with tapered glass capillary optics for application of surface modifications and a biological tool called “cell surgery”, respectively. The transmission through the tapered glass capillaries with inlet diameter of 0.8 mm?, outlet diameter from 900 nm? to several tens of microns and length of about 50 mm was performed using 8/64 keV Ar8+ beams. The transmitted beams had a density enhancement of about 10 and were guided through a capillary tilted by as large as ±100 mrad. The charge state of the beams was kept during the transmission. The combination of MeV proton/He ion beams and the capillary with a thin end window at its outlet can realize pinpoint energy deposition and three-dimensional selection of the bombarding point in an arbitrary position of a living cell or in any liquid object. We demonstrated that a real biological cell, HeLa cell with the nucleus labeled by green fluorescent protein (GFP), was irradiated with the microbeam, which was prepared by 4 MeV He2+ entering a capillary with an end window of 7.3 μm in thickness and outlet diameter of 9.6 μm?. The transmitted MeV ion beams had density enhancement up to 1000 according to the capillary outlet sizes, which are applicable to various material analyses employing microbeams. 相似文献
159.
Takuya Yokokita Yoshitaka Kasamatsu Takashi Yoshimura Naruto Takahashi Atsushi Shinohara 《溶剂提取与离子交换》2013,31(5):472-495
Detailed chemical studies on transactinide elements will clarify their characteristic properties caused by strong relativistic effect. In this work, to realize chemical study on transactinide element 105Db, cation exchange, and solid-liquid and liquid-liquid extractions of micro amounts of Nb, Ta (homologues of Db), and Pa (pseudo homologue) by Aliquat 336 were performed employing hydrochloric acid. Clearly different chloride complex formations and distribution reaction kinetics were observed among these elements, and the present results are useful for studying the chemical properties of Db. Based on these results, we propose suitable experimental conditions for Db. 相似文献
160.
Sarawut Rimdusit Nuttiwan Thamprasom Nitinat Suppakarn Chanchira Jubsilp Tsutomu Takeichi Sunan Tiptipakorn 《应用聚合物科学杂志》2013,130(2):1074-1083
Three types of arylamine‐based benzoxazine resins modified with both condensed‐phase and gas‐phase action flame retardant, i.e. triphenyl phosphate (TPP) at various weight ratios were investigated. From rheological study, it was found that the viscosity of benzoxazines/TPP mixtures were significantly lower than that of the neat benzoxazine monomers suggesting flow property enhancement. Furthermore, differential scanning calorimetry results revealed that the onset and the maximum temperatures of the exothermic peak, due to the ring opening polymerization of benzoxazine resins, shifted to lower temperatures with increasing TPP. In addition, all polybenzoxazines possessed relatively high char yield, which increased as the TPP content increased thus enhancing their flame retardancy. The limiting oxygen index values of the flame retarded polybenzoxazines also increased with TPP addition. The maximum flame retardancy of UL94 V‐0 class was obtained with an addition of only few percents of TPP in the polybenzoxazines. Flexural strength, flexural modulus, and glass transition temperature of those polybenzoxazines tended to decrease with an addition of TPP mainly due to its plasticizing effect. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1074‐1083, 2013 相似文献