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Article type: Cover
2007 Volume 42 Pages
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Article type: Index
2007 Volume 42 Pages
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Article type: Index
2007 Volume 42 Pages
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Tadateru KUROSAWA, Hiroshi NARUMI, Yoshitaka NAKAMURA, Kumiko SATO, Na ...
Article type: Article
2007 Volume 42 Pages
1-5
Published: December 20, 2007
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In this paper we deal with YG Personality Inventory (YGPI) in case of Heisei 18 third grader in Hachinohe National College of Technology. YGPI consists of 120 questions which are quite useful and also quite valuable to many companies, department to obtain information for their personnel. At school the YGPI helps teachers counsel students for their direction in seeking a profession. As a result, it turned out that distribution of a candidate is average.
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Mitsuhiro ITOH, Hideko SHIMODATE, Jun-ichi HOSOGOE
Article type: Article
2007 Volume 42 Pages
7-10
Published: December 20, 2007
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Takashi NONAKA, Norimasa KUDO, Yukio TSUCHIYA, Norio KUJI, Takao KUDO, ...
Article type: Article
2007 Volume 42 Pages
11-14
Published: December 20, 2007
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Jun SATO
Article type: Article
2007 Volume 42 Pages
15-18
Published: December 20, 2007
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Yasunori TOKI, Akio BABA
Article type: Article
2007 Volume 42 Pages
19-27
Published: December 20, 2007
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Kazuhiro MURAYAMA, Jyunpei KADONO, Isamu KUMAGAI
Article type: Article
2007 Volume 42 Pages
29-35
Published: December 20, 2007
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Choko KAMATA, Tomoya OKOSHI
Article type: Article
2007 Volume 42 Pages
37-42
Published: December 20, 2007
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Kazuo URANISHI, Takesi SHIKAHARA
Article type: Article
2007 Volume 42 Pages
43-46
Published: December 20, 2007
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For the useful application of cavitation, experiment was carried to make clear the effect of inlet position of a centrifugal pump impeller on cavitation intensity. The inlet pipe size of the tested centrifugal pump is 20mm and the specific speed is 100 (m.m^3/min.min^<-1>). The number of the impeller blade is 4 and the shape is two-dimensional. The intensity of cavitation was measured by the acceleration on the pump casing and the occurrence region of cavitation was observed by the painted method. The larger inlet radius is, the higher casing vibration caused by cavitation is. A guideline of the impeller design was confirmed by the series of experiments.
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Tomoharu AKAGAKI, Masahiko KAWABATA
Article type: Article
2007 Volume 42 Pages
47-51
Published: December 20, 2007
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Friction and wear behaviors of PEEK composite material in contaminated oil containing white-fused alumina particles were studied. For the comparison, white metal and un-filled PEEK material were also studied. Wear debris and worn surfaces were observed with a scanning electron microscope (SEM) and the wear mechanism was discussed. It was found that only large contaminant had the evil influence on the friction and wear behaviors for all tested materials. The friction coefficient for the PEEK materials became much higher than that for the white metal. On the worn surfaces of the PEEK materials, clear evidences showing cutting action due to sliding and rolling of contaminant were commonly observed. In contrast, on the white metal, long and continuous plowing grooves probably caused by sliding of contaminant were commonly observed.
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Fumio TAKEO
Article type: Article
2007 Volume 42 Pages
53-56
Published: December 20, 2007
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Norio KUJI, Masaaki ITO, Yuya AKASAKA
Article type: Article
2007 Volume 42 Pages
57-63
Published: December 20, 2007
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It is often required to match men to articles on various aspects in medical facilities. Such matching work must be performed without any mistakes for medical safety. So far, these works have been performed through human-eye checks, but has become difficult, because medical articles increase in number and the matching work become more complicated. This paper describes a new medical management system, which provides with biometrics certifications for reliable identification of patients and safe treatment of medical articles and surgical instruments using radio-frequency identification (RFID) tags. When this system is introduced into actual medical facilities, medical environment will become more securable.
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Hiroyuki KAMAYA, Kenichi ABE
Article type: Article
2007 Volume 42 Pages
65-68
Published: December 20, 2007
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The most widely used reinforcement learning algorithms, such as TD-learning and Q-learning represent action-value function using a table. Therefore, these algorithms are limited to tasks with small numbers of states and actions. In this paper, we propose a new reinforcement learning algorithm for continuous state spaces, which represents action-value function using Radial Basis Function Network. The algorithm is applied to a mountain-car control task. The results of extensive simulations demonstrate that proposed algorithm can find good solutions.
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Takayuki SAITO, Sayaka NUMADATE
Article type: Article
2007 Volume 42 Pages
69-72
Published: December 20, 2007
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Supercritical fluid extraction of oil from dried Chinese chrysanthemum (hang-bai-ju) flowers was studied using carbon dioxide as a solvent The effect of the operation parameters was examined in a series of experiments at temperature between 308 K and 318 K and pressure between 12.5 MPa and 20.0 MPa. The components of the extracted oil were analyzed by GC/MS. The results indicated that the extraction rate of Chrysanthemum oil increased at higher temperatures and pressures, and the optimal conditions for the extraction were 318 K and 20.0 MPa. The main components of the extracted oil were several saturated hydrocarbons, comprising about 80%. Fatty acids, fat-soluble vitamins, plant sterols, and triterpenes were also present in small amounts.
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Yasuo SUZUKI
Article type: Article
2007 Volume 42 Pages
73-79
Published: December 20, 2007
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In a system of pipeline liquid transportation, liquid column separation occurs when the difference of pipeline elevations between the highest and the lowest becomes larger than 10 m. If a liquid is forced to flow in the pipeline under this condition, the cavity formed due to the liquid column separation collapses, and as a result, an extraordinary large pressure rise can occur. This phenomenon is very harmful for the liquid transportation system. In this paper, the behavior of liquid column separation collapse, is clarified and the velocity of liquid column collapses was derived from the macroscopic mechanical energy balance equations. As a result, experimental values of maximum pressure rise and required time for liquid column collapses were in good agreement with those obtained using the derived quations mentioned above.
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Yasuo SUZUKI, Hirotaka KAMATA, Isao DAIMARU
Article type: Article
2007 Volume 42 Pages
81-86
Published: December 20, 2007
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Experiments on draining of a high-viscosity Bingham fluid from a cylindrical tank were conducted. The experimental methods are the same as those reported previously. In the experiments for a Bingham fluid, tomato catsup was used, and the time required for draining of the test fluids was measured. The measured drain time was generally well correlated by the equations derived from the macroscopic mechanical energy balance equations. However, it became clear that the drain time became longer than the one calculated by the correlation equations, if the yield share stress of the fluid becomes greater than the shear stress at drain pipe wall of which is calculated based on the pressure drop value. On the other hand, in case of a pseudoplastic fluid, CMC solution was used, it turned out that the drain time depends on flow behavior index n of the power-law model fluid. As a result, experimental results were well correlated in the n range of 1.1 to 1.72 by the equations derived from the macroscopic mechanical energy balance equations.
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Tatsunori YAMAGISHI, Kazuo SHIBASAKI
Article type: Article
2007 Volume 42 Pages
87-91
Published: December 20, 2007
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The interactions between conglycinin and surfactants at pH 7.6 have been studied by nuclear magnetic resonance technique. When a surfactant binds to a protein and the molecular motion of all the alkyl groups of the surfactant is restricted, this effect being greater for the CH_3 in trimethylammonium residue than for the terminal CH_3 group. The head group, trimethylammonium residue is in a more polar environment than the other CH_2 groups and terminal CH_3 group. Hence although hydrophobic bonding may account for a significant portion of the binding free energy, electrostatic forces are also important and may determine the site of the interaction. The interactions may cause physical properties of soybean protein to change on heating followed by freezing.
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Tatsunori YAMAGISHI, Kazuo SHIBASAKI
Article type: Article
2007 Volume 42 Pages
93-98
Published: December 20, 2007
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In order to investigate their interactions, state of aromatic amino acid residues was qualitatively monitored by using of derivative ultra-violet (UV) absorption spectrophotometry. Choline and cetyltrimethylammonium bromide (CTAB) did not have an effect on the conformation of native soybean protein, but did on their heating. Difference derivative absorption spectra indicated that CTAB caused not only blue shift but also red shift on heating of conglycinin or glycinin. Transition of blue shift to red shift occurred at 10^<-4>M CTAB concentration, which may be suitable for promoting ionization of sulphydryl residue (SH) followed by inducing intermolecular reaction through sulphydryl - sulphide (SH-SS) exchange.
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Tetsuo HONMA, Masatoshi HAKAMADA, Hiroshi INOMATA
Article type: Article
2007 Volume 42 Pages
99-103
Published: December 20, 2007
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Glyceraldehyde conversion in terms of dehydration, keto-enol tautomerism, and retro-aldol reaction has been discussed by means of ab initio density functional theory calculation to elucidate catalytic water molecule influence on the pathway. The optimized structures of reactants, products, and transition state structure on the glyceraldehyde conversion pathways were fully optimized with the B3LYP/AUG-cc-pVDZ level At first, retro-aldol reaction through a six-membered ring-like transition state structure reduced threshold energy, which was preferred pathway in the absence of water. The presence of water on dehydration and tautomerism pathways reduces threshold energies, but dehydration is consistently more favorable than tautomerism and retro-aldol reaction. Water molecule can enhance glucose conversion by directly participating in the transition state by forming ring-like water bridge and lowering the threshold energy. In the future study, the discrete solvation model simulation in terms of the solvation effect will be investigated on the glyceraldehyde conversion in supercritical water by means of quantum mechanics/molecular mechanics (QM/MM) simulation.
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Tetsuo HONMA, Hidekazu FUTAMATA, Yoshio SATO
Article type: Article
2007 Volume 42 Pages
105-109
Published: December 20, 2007
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Direct conversion of benzene to phenol in high-temperature and high-pressure water was performed using batch-type and continuous flow-type reactor. Batch-type experiments were carried out at temperature 400℃ and pressures of 10 to 40 MPa. The amounts of benzene ranged from 0.1 to 0.6 g, and EbCte / benzene ratio ranged from 1/8 to 1. The identification and quantification of liquid products were conducted by GC/MS and GC/FID with internal standard method. Gas product distribution was determined by GC/TCD. As a result of qualitative analysis phenol and biphenyl were mainly observed. At higher pressure condition, increasing phenol selectivity indicates the phenol production might be dominated by ionic reaction mechanism. Phenol selectivity increased with higher pressure and shorter reaction time. Benzene conversion increased with longer reaction time, however the phenol selectivity decreased. This phenomenon was considered that produced phenol was decomposed to the gas products such as carbon monoxide or carbon dioxide. To avoid phenol decomposition, flow-type experiments were operated at pressure 40 MPa, temperatures 100 to 400℃ and residence time 2.4 to 95.7 s. According to quantitative analysis, carbon balance generally exceeded around 85 %. Regarding the gas analysis, carbon monoxide and carbon dioxide were mainly observed. But the amounts of the gas product had a minor contribution on the mass balances. Phenol formation increased between 250 to 300℃, the maximum phenol yield was obtained 5.14 % at 40 MPa, 250℃ and residence time 44.5 s. Because of similar temperature dependence between phenol yield and ionic product, we confirmed that phenol synthesis was ionic reaction.
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Yasutaka YAMAMICHI, Junichi YAGUCHI
Article type: Article
2007 Volume 42 Pages
111-117
Published: December 20, 2007
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The characteristics of Microlunatus phosphovorus and Tetrasphaera elongata, which were reported to be polyphosphate accumulating bacteria, were investigated with respect to phosphate uptake rate, effect of organic substance, substrate utilization, denitrifying ability and mixture effect with activated sludge. Phosphorus removal experiments were performed in 3 cycles of anaerobic/aerobic phases, alternating anaerobic incubation followed by aerobic incubation. The specific phosphorus removal rate of M. phosphovorus reached 1.4〜12.2 (mgP/g cell/hr) and that of T. elongata was 0.96〜3.89 (mgP/g cell/hr). M. phosphovorus could not exercise phosphate accumulating activity in the absence of organic substance in the anaerobic phase. On the contrary, T. elongata could remove phosphate without organic substance. The addition of glucose, casamino acids, glutamate in the anaerobic phase led to phosphate removal, but the addition of acetate and leucine had little effect in phosphate removal. Each of two microorganisms didn't show phosphate accumulating ability in the anoxic phase containing nitrate. When two microorganisms were mixed with activated sludge, M. phosphovorus and T. elongata could accumulate phosphate in activated sludge. Especially, M. phosphovorus exhibited an excellent phosphate removal activity. Mixing M. phosphovorus into activated sludge in biological phosphate treatment processes may improve phosphate removal ability.
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Hiroshi NARUMI, Ken-ichi EBINA, Takeshi YAMAUCHI, Kazuhiko OGASAWARA
Article type: Article
2007 Volume 42 Pages
119-122
Published: December 20, 2007
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Yasushi HOSOKAWA, Norimasa KUDOH
Article type: Article
2007 Volume 42 Pages
123-128
Published: December 20, 2007
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Mitsuhiro ITOH, Jun-ichi HOSOGOE
Article type: Article
2007 Volume 42 Pages
129-132
Published: December 20, 2007
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Article type: Appendix
2007 Volume 42 Pages
App1-
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Article type: Appendix
2007 Volume 42 Pages
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Article type: Cover
2007 Volume 42 Pages
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