Kazuma Shiraishi, Sho Ishii, A. Kasai, Shigehiro Inui, Y. Matsumura, Y. Nishi
A universal CFRTP/NiCF/Al joint method was suggested for the carbon fiber reinforced thermoplastic ABS polymer (CFRTP) and aluminum (Al) with extremely large friction force induced by broad interface of carbon fibers coated by nickel. The CFRTP/NiCF/Al joint part was strengthened by impregnated nickel-coated carbon fibers (NiCF) to prevent aluminum carbide formation, as well as to enhance the ability of fiber rapping by molten aluminum. The universal joint exhibited the extremely higher safety level of resistance to tensile stress and apparent hardening modulus at each strain than that of the joint without carbon fiber.
{"title":"Preparation of CFRTP/Al universal joint reinforced by high volume fraction of carbon fibers utilized for automobile","authors":"Kazuma Shiraishi, Sho Ishii, A. Kasai, Shigehiro Inui, Y. Matsumura, Y. Nishi","doi":"10.2978/JSAS.25.17","DOIUrl":"https://doi.org/10.2978/JSAS.25.17","url":null,"abstract":"A universal CFRTP/NiCF/Al joint method was suggested for the carbon fiber reinforced thermoplastic ABS polymer (CFRTP) and aluminum (Al) with extremely large friction force induced by broad interface of carbon fibers coated by nickel. The CFRTP/NiCF/Al joint part was strengthened by impregnated nickel-coated carbon fibers (NiCF) to prevent aluminum carbide formation, as well as to enhance the ability of fiber rapping by molten aluminum. The universal joint exhibited the extremely higher safety level of resistance to tensile stress and apparent hardening modulus at each strain than that of the joint without carbon fiber.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"84 1","pages":"17-20"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73670343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hiroyuki Nishikawa, M. Kuramoto, Shigeki Okino, F. Suda
Various chaos analyses have been applied for the time series of several human activities. As a result of recurrence plot and power spectrum analyses, three rough classes of the transactions between companies, those between companies and individuals, and those between individuals can be refined according to the geometrical structure of an attractor into three more accurate categories: non-stationary, periodic and stochastic changes. In a stochastic one, the slope of the approximate straight line of the log-log graph of power spectrum density: β ≥ 1.26, and the recurrence plot of its attractor shows non-contiguous diagonal lines; in a periodic one, 0.770 ≤ β ≤ 1.25, equally-spaced diagonals; and in a non-stationary one, 0.108 ≤ β ≤ 0.389, ambiguous boundaries of domain.
{"title":"Chaos analysis of the time series data derived from human activities","authors":"Hiroyuki Nishikawa, M. Kuramoto, Shigeki Okino, F. Suda","doi":"10.2978/JSAS.25.31","DOIUrl":"https://doi.org/10.2978/JSAS.25.31","url":null,"abstract":"Various chaos analyses have been applied for the time series of several human activities. As a result of recurrence plot and power spectrum analyses, three rough classes of the transactions between companies, those between companies and individuals, and those between individuals can be refined according to the geometrical structure of an attractor into three more accurate categories: non-stationary, periodic and stochastic changes. In a stochastic one, the slope of the approximate straight line of the log-log graph of power spectrum density: β ≥ 1.26, and the recurrence plot of its attractor shows non-contiguous diagonal lines; in a periodic one, 0.770 ≤ β ≤ 1.25, equally-spaced diagonals; and in a non-stationary one, 0.108 ≤ β ≤ 0.389, ambiguous boundaries of domain.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"8 1","pages":"31-37"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74307766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An experiment of hydrogen generation from organic materials using supercritical-water (SCW) was demonstrated using methanol as a monohydric alcohol. Addition of hydrogen peroxide to the solution exhibited higher yield of hydrogen generation depending on the amount of peroxide. Energy conversion efficiency was estimated from energy for heating and pressurizing, and reaction enthalpy of hydrogen oxidation.
{"title":"Study on effective hydrogen generation from organic compound using supercritical water","authors":"A. Matsui, T. Miura, H. Uchida","doi":"10.2978/JSAS.23.32","DOIUrl":"https://doi.org/10.2978/JSAS.23.32","url":null,"abstract":"An experiment of hydrogen generation from organic materials using supercritical-water (SCW) was demonstrated using methanol as a monohydric alcohol. Addition of hydrogen peroxide to the solution exhibited higher yield of hydrogen generation depending on the amount of peroxide. Energy conversion efficiency was estimated from energy for heating and pressurizing, and reaction enthalpy of hydrogen oxidation.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"36 1","pages":"32-35"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84707730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Umezu, Shigeto Kawata, A. Ishii, Y. Kunugi, H. Ohmori
Dye-Sensitized Solar Cell (DSC) is highly focused by many researchers because DSC has good merits those are flexible and colorful. However, efficiency of DSC is low. Many researches on chemical characteristics and shape of titania and dye to improve efficiency are carried out. We applied electrostatic inkjet technology for patterning titania layer of DSC because fabrication process should be developed to contribute to high efficiency. New machine that can print titania is essential to fabricate DSC on various surface of flexible electronics. The optimized thickness of titania layer is changed when the titania and dye are changed of type. Traditionally, doctor blade method and screen print method has been used to fabricate titania layer. However, these methods are not suitable to optimize thickness of titania layer. In this paper, we developed the machine to print titania layer. We demonstrated that thickness of titania layer depends on printing time and efficiency is changed when thickness of titania layer is changed.
染料敏化太阳能电池(Dye-Sensitized Solar Cell, DSC)以其灵活、色彩丰富等优点受到了广泛的关注。然而，DSC的效率较低。为了提高效率，对二氧化钛和染料的化学特性和形状进行了许多研究。采用静电喷墨技术对DSC的二氧化钛层进行图像化，是为了提高制作工艺的效率。为了在柔性电子产品的各种表面上制备DSC，新型的二氧化钛打印设备是必不可少的。随着钛和染料类型的改变，钛层的最佳厚度也随之改变。传统上制备氧化钛层的方法主要有刮刀法和丝网印刷法。然而，这些方法并不适用于优化氧化钛层的厚度。在本文中，我们研制了一种用于打印二氧化钛层的机器。结果表明，钛层厚度与打印时间有关，钛层厚度的变化会影响打印效率。
{"title":"Development of the dye-sensitized solar cell by micro digital fabrication","authors":"S. Umezu, Shigeto Kawata, A. Ishii, Y. Kunugi, H. Ohmori","doi":"10.2978/JSAS.24.16","DOIUrl":"https://doi.org/10.2978/JSAS.24.16","url":null,"abstract":"Dye-Sensitized Solar Cell (DSC) is highly focused by many researchers because DSC has good merits those are flexible and colorful. However, efficiency of DSC is low. Many researches on chemical characteristics and shape of titania and dye to improve efficiency are carried out. We applied electrostatic inkjet technology for patterning titania layer of DSC because fabrication process should be developed to contribute to high efficiency. New machine that can print titania is essential to fabricate DSC on various surface of flexible electronics. The optimized thickness of titania layer is changed when the titania and dye are changed of type. Traditionally, doctor blade method and screen print method has been used to fabricate titania layer. However, these methods are not suitable to optimize thickness of titania layer. In this paper, we developed the machine to print titania layer. We demonstrated that thickness of titania layer depends on printing time and efficiency is changed when thickness of titania layer is changed.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"111 1","pages":"16-20"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72877940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The goal of this study is to fabricate 3-dimensional living tissue utilizing our ink-jet technology. Our inkjet technology has two merits; those were high resolution to print and ability to eject highly viscous liquid. In this paper, collagen was used as a scaffold material of the cells. Alginate gel is used as supporting scaffolds. We developed basic technology to fabricate 3-dimensional living tissue.
{"title":"Patterning collagen for 3D cell structures","authors":"S. Umezu, T. Aoki, H. Ohmori","doi":"10.2978/JSAS.24.11","DOIUrl":"https://doi.org/10.2978/JSAS.24.11","url":null,"abstract":"The goal of this study is to fabricate 3-dimensional living tissue utilizing our ink-jet technology. Our inkjet technology has two merits; those were high resolution to print and ability to eject highly viscous liquid. In this paper, collagen was used as a scaffold material of the cells. Alginate gel is used as supporting scaffolds. We developed basic technology to fabricate 3-dimensional living tissue.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"49 1","pages":"11-15"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74291014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sasaki Norihito, O. Haruhiko, Amano Tadaaki, S. Toetsu, Yubuta Kunio
{"title":"微量のイットリウムを添加したFeCrAl合金の酸素－水蒸気（47vol%）中における耐高温酸化性","authors":"Sasaki Norihito, O. Haruhiko, Amano Tadaaki, S. Toetsu, Yubuta Kunio","doi":"10.2978/JSAS.24.8","DOIUrl":"https://doi.org/10.2978/JSAS.24.8","url":null,"abstract":"","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"97 1","pages":"8-10"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77338378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kaito Sasaki, Masahiko Miyara, R. Kita, N. Shinyashiki, S. Yagihara
Dielectric relaxation process of water was investigated for 30 wt% gelatin-water mixture at frequencies between 1 MHz and 50 GHz in subzero temperatures down to -50 C. Below the melting temperature Tm, part of water crystallized and another part of water, uncrystallized water (UCW) , remained in a liquid state with gelatin in an uncrystallized phase. At Tm, the relaxation strength, relaxation time, and relaxation time distribution change adruptly, and their subsequent changes with decreasing temperature are larger than those above Tm. These large temperature dependences below Tm can explained by the increase in gelatin concentration in the uncrystallized phase Cg,UCP with decreasing temperature.
{"title":"Dynamics of water in the partially crystallized gelatin water mixture","authors":"Kaito Sasaki, Masahiko Miyara, R. Kita, N. Shinyashiki, S. Yagihara","doi":"10.2978/JSAS.24.41","DOIUrl":"https://doi.org/10.2978/JSAS.24.41","url":null,"abstract":"Dielectric relaxation process of water was investigated for 30 wt% gelatin-water mixture at frequencies between 1 MHz and 50 GHz in subzero temperatures down to -50 C. Below the melting temperature Tm, part of water crystallized and another part of water, uncrystallized water (UCW) , remained in a liquid state with gelatin in an uncrystallized phase. At Tm, the relaxation strength, relaxation time, and relaxation time distribution change adruptly, and their subsequent changes with decreasing temperature are larger than those above Tm. These large temperature dependences below Tm can explained by the increase in gelatin concentration in the uncrystallized phase Cg,UCP with decreasing temperature.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"12 1","pages":"41-44"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78113079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fumitaka Aki, Takuya Kemmoku, Tatsuhiro Kimura, Y. Kageyama, H. Ohshima, N. Kanai, K. Okamoto, K. Yamazaki, Hiroyuki Tadokoro
As a basic experiment for the development of neuromotor prostheses (NMPs), movement related neural signals were measured using rats. The electrodes were surgically implanted in the motor cortex, spinal cord, sciatic, and femoral nerves. The measurements were carried out under two conditions, which were voluntary movement and involuntary motion evoked by startle auditory stimuli. Obtained signal waveforms under two separate conditions were compared and analyzed. In both conditions, a descending transmitting signal was observed. However, remarkable readiness activity of the motor cortex was not seen in both cases with a 5 times averaging. Using our experimental model, neurophysiological characteristics of motor generation were revealed. Based upon these findings, the possibility of new NMPs for the disabled was discussed.
{"title":"The electrophysiological relationships between motor cortex, spinal cord and leg peripheral nerves evoked by startle sound stimuli using rats","authors":"Fumitaka Aki, Takuya Kemmoku, Tatsuhiro Kimura, Y. Kageyama, H. Ohshima, N. Kanai, K. Okamoto, K. Yamazaki, Hiroyuki Tadokoro","doi":"10.2978/JSAS.23.26","DOIUrl":"https://doi.org/10.2978/JSAS.23.26","url":null,"abstract":"As a basic experiment for the development of neuromotor prostheses (NMPs), movement related neural signals were measured using rats. The electrodes were surgically implanted in the motor cortex, spinal cord, sciatic, and femoral nerves. The measurements were carried out under two conditions, which were voluntary movement and involuntary motion evoked by startle auditory stimuli. Obtained signal waveforms under two separate conditions were compared and analyzed. In both conditions, a descending transmitting signal was observed. However, remarkable readiness activity of the motor cortex was not seen in both cases with a 5 times averaging. Using our experimental model, neurophysiological characteristics of motor generation were revealed. Based upon these findings, the possibility of new NMPs for the disabled was discussed.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"65 1","pages":"26-31"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73842064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hiroyuki Nakamura, Tatsuhiro Kimura, K. Yazaki, H. Ohshima, N. Kanai, K. Okamoto, K. Yamazaki, Hiroyuki Tadokoro
{"title":"An analysis of the relationships between cognitive function and breath alcohol concentrations using Event Related Potentials (P300)","authors":"Hiroyuki Nakamura, Tatsuhiro Kimura, K. Yazaki, H. Ohshima, N. Kanai, K. Okamoto, K. Yamazaki, Hiroyuki Tadokoro","doi":"10.2978/JSAS.24.45","DOIUrl":"https://doi.org/10.2978/JSAS.24.45","url":null,"abstract":"","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"1 1","pages":"45-51"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88858637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saori Mera, Suguru Tanaka, A. Tonegawa, K. Kawamura, Kohnosuke Sato, Y. Matsumura, H. Uchida
Nuclear fusion is expected as one of the future energy source. Deuterium and Tritium are fuels. But most unreacted fuel is exhausted out of fusion reactor. Especially, Tritium is radioisotope and rarely exists in nature, so fuels recovery is necessary. Therefore, we propose a separation on divertor region by using hydrogen storage material. In this study, we have proposed fuel particles recovering on divertor with titanium in the type of a hydrogen storage material by using divertor simulator TPD-SheetIV via deuterium plasma. After deuterium plasma exposures, the samples were analyzed by thermal desorption spectroscopy (TDS). The temperatures of the samples were increased up to 1093K. As a result, the TDS measurement shows that deuterium is retained.
{"title":"Basic study on plasma facing materials by using hydrogen storage material","authors":"Saori Mera, Suguru Tanaka, A. Tonegawa, K. Kawamura, Kohnosuke Sato, Y. Matsumura, H. Uchida","doi":"10.2978/JSAS.24.37","DOIUrl":"https://doi.org/10.2978/JSAS.24.37","url":null,"abstract":"Nuclear fusion is expected as one of the future energy source. Deuterium and Tritium are fuels. But most unreacted fuel is exhausted out of fusion reactor. Especially, Tritium is radioisotope and rarely exists in nature, so fuels recovery is necessary. Therefore, we propose a separation on divertor region by using hydrogen storage material. In this study, we have proposed fuel particles recovering on divertor with titanium in the type of a hydrogen storage material by using divertor simulator TPD-SheetIV via deuterium plasma. After deuterium plasma exposures, the samples were analyzed by thermal desorption spectroscopy (TDS). The temperatures of the samples were increased up to 1093K. As a result, the TDS measurement shows that deuterium is retained.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"17 1","pages":"37-40"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87368798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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