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Self Assembly of Honeycomb TiO2 Coatings by Tea-Leaf Extracts as the Dispersoids  [PDF]
Masayuki Kamei
World Journal of Condensed Matter Physics (WJCMP) , 2011, DOI: 10.4236/wjcmp.2011.13010
Abstract: Photo catalytic TiO2 coatings with well defined honeycomb structure were successfully self-assembled on glass substrates by a simple “dip and burn solgel method“. The crux of this new method is that the starting material for the sol-gel coating (the water solution of ammonium titanium citrate) was “doped” with “tea-leaf extracts”. Tea-leaf extracts were completely dissolved in the water solution of ammonium titanium citrate and nucleate uniformly during the drying procedure of the coating precursor formation. This uniformly dispersed nucleation of the “tea-leaf extracts (tannin, catechin…)” were extracted during calcinations and leaving honeycomb-cell like nano-structure in the TiO2 coatings. Self-assembled cells were uniformly distributed in the TiO2 coatings and the diameter of the cells was in the range of 200 - 1000 nm. Fine honeycomb structures were clearly observed with microscopic observations.
Sensitive and Reproducible Photocatalytic Activity Evaluation Instrument for Transparent Coatings  [PDF]
Masayuki Kamei
World Journal of Condensed Matter Physics (WJCMP) , 2012, DOI: 10.4236/wjcmp.2012.21008
Abstract: A new photocatalytic activity (PC) measurement instrument based on the measurement of the photo-induced reduction of Ag ions was proposed. The feature of this system is to perform “ultraviolet irradiation for PC activation” and “Ag film thickness determination for PC evaluation” simultaneously and automatically. Realizing a PC measurement system with high sensitivity, wide dynamic range, easy operation and reproducibility, which is especially suited for the PC measurement of the coatings on transparent substrates.
Note on a Continuum Multi-Country and International Trade  [PDF]
Keita Kamei
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.22040
Abstract: We provide an analytical solution for the continuum multi-country two-sector Ricardian model of Yanagawa (1996) [1], and obtain additional results that are not observed in the standard two-country two-good Ricardian model. Increases in productivity in each sector results in an increase in the number of countries producing high technology goods and a de- crease in the number of countries producing low technology goods.
Recent Research of Thorium Molten-Salt Reactor from a Sustainability Viewpoint
Takashi Kamei
Sustainability , 2012, DOI: 10.3390/su4102399
Abstract: The most important target of the concept “sustainability” is to achieve fairness between generations. Its expanding interpolation leads to achieve fairness within a generation. Thus, it is necessary to discuss the role of nuclear power from the viewpoint of this definition. The history of nuclear power has been the control of the nuclear fission reaction. Once this is obtained, then the economy of the system is required. On the other hand, it is also necessary to consider the internalization of the external diseconomy to avoid damage to human society caused by the economic activity itself, due to its limited capacity. An extreme example is waste. Thus, reducing radioactive waste resulting from nuclear power is essential. Nuclear non-proliferation must be guaranteed. Moreover, the FUKUSHIMA accident revealed that it is still not enough that human beings control nuclear reaction. Further, the most essential issue for sustaining use of one technology is human resources in manufacturing, operation, policy-making and education. Nuclear power will be able to satisfy the requirements of sustainability only when these subjects are addressed. The author will review recent activities of a thorium molten-salt reactor (MSR) as a cornerstone for a sustainable society and describe its objectives and forecasts.
Deciding nonconstructibility of 3-balls with strict spanning edges
Satoshi Kamei
Mathematics , 2011,
Abstract: In this paper, we consider constructibility of simplicial 3-balls. In many cases, examining 1-dimensional subcomplexes of a simplicial 3-ball is efficient to solve the decision problem whether the simplicial 3-ball is constructible or not. From the point of view, we consider the case where a simplicial 3-ball has spanning edges and present a sufficient condition for nonconstructibility.
Automatic structures and growth functions for finitely generated abelian groups
Satoshi Kamei
Mathematics , 2011,
Abstract: In this paper, we consider the formal power series whose n-th coefficient is the number of copies of a given finite graph in the ball of radius n centred at the identity element in the Cayley graph of a finitely generated group and call it the growth function. Epstein, Iano-Fletcher and Uri Zwick proved that the growth function is a rational function if the group has a geodesic automatic structure. We compute the growth function in the case where the group is abelian and see that the denominator of the rational function is determined from the rank of the group.
1-Deoxynojirimycin Content and Alfa-Glucosidase Inhibitory Activity and Heat Stability of 1-Deoxynojirimycin in Silkworm Powder  [PDF]
Kazuhisa Yatsunami, Kohji Murata, Tsutomu Kamei
Food and Nutrition Sciences (FNS) , 2011, DOI: 10.4236/fns.2011.22011
Abstract: Silkworm powder containing 1-deoxynojirimycin (DNJ) has α-glucosidase inhibitory activity and is promising as a complementary and alternative medicine (CAM) agent in Japan. Silkworm powder produced in Korea was extracted with 75% ethanol. The extract was derivatized with 9-fluorenylmethyl chloroformate (FMOC-Cl), and DNJ-FMOC content was measured by HPLC. Then, alfa-glucosidase inhibition by silkworm and mulberry powder in pig liver crude enzyme was assayed using 4-nitrophenyl-alfa-D-glucopyranoside as a substrate. Silkworm powder DNJ content (0.39 to 0.58%) was higher than that in mulberry powder (0.08 to 0.12%). The alfa-glucosidase inhibitory activity of silkworm powder was more potent than that of mulberry leaves and green tea. Silkworm powder DNJ was stable upon heating to 121?C for up to 15 min.
Measurement of Rain Attenuation in Terahertz Wave Range  [PDF]
Seishiro Ishii, Syuji Sayama, Toshihisa Kamei
Wireless Engineering and Technology (WET) , 2011, DOI: 10.4236/wet.2011.23017
Abstract: Rain attenuation at 355.2 GHz in the terahertz wave range was measured with our new 355.2 GHz measuring system under rainfall intensities up to 25 mm/hr. Rain attenuation coefficients were also calculated using four raindrop-size distributions, e Marshall-Palmer (M-P), Best, Polyakova-Shifrin (P-S) and Weibull distributions, and using a specific rain attenuation model for prediction methods recommended by ITU-R. Measurements of a terahertz wave taken at 355.2 GHz were compared with our calculations. Results showed that the propagation experiment was in very good agreement with a calculation from a specific attenuation model for use in prediction method recommended by ITU-R.
Preface
Yasuaki Ito,Sayaka Kamei
International Journal of Networking and Computing , 2011,
Abstract: The first International Conference Networking and Computing (ICNC) on November 17-19, 2010, in Higashi-Hiroshima, Japan, – aims to provide a timely forum for exchange and discussion of the latest research findings in all aspects of networking and computing including parallel and distributed systems, architectures, and applications. Also, four workshops, 2nd Workshop on Ultra Performance and Dependable Acceleration Systems (UPDAS), 2nd International Workshop on Parallel and Distributed Algorithms and Applications (PDAA), International Workshop on Advances in Networking and Computing (WANC), and Workshop on Dependability of Network Software Applications (DNSA), were held in conjunction with ICNC. The program committee has encouraged the authors of selected papers including the workshops to submit full-versions of their manuscripts to the International Journal on Networking and Computing (IJNC) after the conference. After a thorough reviewing process, with extensive discussions, ten articles on various topics have been selected for publication on the IJNC special issue on ICNC. On behalf of the ICNC, we would like to express our appreciation for the large efforts of reviewers who reviewed papers submitted to the special issue. Likewise, we thank all the authors for submitting their excellent manuscripts to this special issue. We also express our sincere thanks to the editorial board of the International Journal on Networking and Computing, in particular, to the Editor-in-chief Professor Koji Nakano. This special issue would not have been possible without his support.
Preface
Yasuaki Ito,Sayaka Kamei
International Journal of Networking and Computing , 2012,
Abstract: The second International Conference on Networking and Computing (ICNC) on November 30-December 2, 2011, in Osaka, Japan, - aims to provide a timely forum for exchange and discussion of the latest research findings in all aspects of networking and computing including parallel and distributed systems, architectures, and applications. Also, five workshops, 3rd Workshop on Ultra Performance and Dependable Acceleration Systems (UPDAS), 3rd International Workshop on Parallel and Distributed Algorithms and Applications (PDAA), 2nd International Workshop on Advances in Networking and Computing (WANC), International Workshop on Challenges on Massively Parallel Processors (CMPP), and International Workshop on Networking, Computing, Systems, and Software (NCSS) were held in conjunction with ICNC. The program committee has encouraged the authors of selected papers including the workshops to submit full-versions of their manuscripts to the International Journal on Networking and Computing (IJNC) after the conference. After a thorough reviewing process, with extensive discussions, four articles on various topics have been selected for publication on the IJNC special issue on ICNC. On behalf of the ICNC, we would like to express our appreciation for the large efforts of reviewers who reviewed papers submitted to the special issue. Likewise, we thank all the authors for submitting their excellent manuscripts to this special issue. We also express our sincere thanks to the editorial board of the International Journal on Networking and Computing, in particular, to the Editor-in-chief Professor Koji Nakano. This special issue would not have been possible without his support.
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