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The 4th Pacific Rim Conference on Rheology

作者： Youji Satoh shigeru kagami Sheiichi Kawahara Yoshinobu Isono Department of Chemistry Nagaoka University of Technology 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan The Yokohama Rubber Co. Ltd Hiratsuka Kanagawa 254-8601 Japan Department of Chemistry Nagaoka University of Technology 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan Department of Chemistry Nagaoka University of Technology 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan

＜正＞ Uncured, filled rubbers show remarkable nonlinear viscoelasticity as well as cured, filled rubbers. The nonlinearity may come from change in entanglement and filler network structures. Many people use dynamic modulus to characterize rubber materials. However, dynamic modulus cannot be defined at large strain amplitude. Hence we must study a viscoelastic function to be defined at large strain. In addition, we need another information to separate the effects of the change in entanglement and filler network structures on nonlinear viscoelasticity. In this work, we have measured relaxation modulus G（γ,t） and electrical resistivity p（γ,t） simultaneously for carbon black （CB）-filled, uncured SBRs in a wide range of strain. Electrical resistivity at equilibrium, p（0,t）, showed step-off like change at the threshold of CB loading based on particle size. The threshold of N330 CB exists between 20 and 35phr, indicating threshold for filler network formation should exist in the range of values in CB loading. Both G（γ,t） and p（γ,t） for the samples having CB loading to be higher than the threshold showed nonlinearity at the strain larger than shear strain γ=0.1, indicating rupture in filler network at large strain. The threshold shifted to lower CB content for fine CB（N220）, and no threshold was observed for coarse CB（N660） in the range measured from 20 to 50phr, indicating that the threshold depends on primary particle size. Moreover it has been found that filler network structures rupture easily when the CB content close to the threshold. Furthermore, recovery rate in filler network has been found to be very slow in comparison with that in entanglement structure.

关键词： uncured styrene-butadiene rubber filler-network nonlinear viscoelasticity electrical resistivity.

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The Effect of Umami Stimulation on Salivary Secretion Rate and Duration

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Health 2024年第1期16卷 52-59页

作者： Eri Sambuichi Rumi Nishimura Shiho Morishita shigeru Watanabe Department of Oral Health Sciences School of Health Sciences Meikai University Urayasu Japan Department of Oral Epidemiology Graduate School of Biomedical and Health Sciences Hiroshima University Hiroshima Japan

Purpose: Umami reportedly promotes salivation. We aimed to investigate the effects of taste stimuli on slow and fast salivary secretion in humans using umami, sweet, and sour stimuli. Methods: Eight healthy women participated between 14:00 and 15:00, taking the circadian rhythm of salivary secretion into account. The types and concentrations of the taste solutions were glutamic acid (1.7 × 10−3 M), inosinic acid (9.8 × 10−3 M), and guanylic acid (9.8 × 10−3 M) for umami stimulation, citric acid (6.5 × 10−3 M) for acidity stimulation, and sucrose (1.6 × 10−2 M) for sweetness stimulation. First, the unstimulated salivary flow rate was measured. Then, 3 ml of a flavor solution was dropped under the tongue using a syringe. The saliva was expelled into an aluminum cup every minute and weighed. The first minute’s value minus 3 ml flavor solution was the stimulated salivary secretion rate produced by each flavor. The time-to-return to the initial unstimulated salivary flow rate was the duration of the stimulated saliva secretion rate. Results: The mean unstimulated salivary flow rate across participants was 0.64 ± 0.25 ml/min (range: 0.23 - 1.03 ml/min). The highest amount of saliva was induced by citric acid. There were significant differences between citric acid and the other flavor solutions (p < 0.05 for glutamic acid, inosinic acid, and sucrose;p < 0.01 for guanylic acid). There were no significant differences in duration of salivation between the flavor solutions. When the participants were divided into slow (0.45 ± 0.16 ml/min) and fast groups (0.83 ± 0.15 ml/min) based on their median resting salivary secretion rate, there were no significant differences between the two groups in the amount of saliva secreted at 1 minute after stimulation and the duration of the salivary secretion rate. Conclusion: Umami stimulation was effective in slowing salivary secretion and sustaining salivary secretion after stimulation.

关键词： Salivary Secretion Umami Flavor Oral Health Stimulated Salivary Secretion

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An Experimental Study of Carbon Dioxide Condensation in Mini Channels

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Journal of Thermal Science 2004年第4期13卷 358-365页

作者： shigeru KOYAMA Institute of Advanced Material Study Kyushu University Kasuga-koen 6-1 Kasuga-shi Fukuoka 816-8580Japan

In this study, the local characteristics of pressure drop and heat transfer were investigated experimentally for carbon dioxide condensation in a multi-port extruded aluminum test section, which had 10 circular channels each with 1.31 mm inner diameter. The CO2 was cooled with cooling water flow inside the copper blocks that were attached at both sides of the test section. The temperatures at the outer surface of the test section were measured with 24 K-type thermocouples embedded in the upper and lower surfaces along the length. Local heat fluxes were measured with 12 heat flux sensors to estimate the local enthalpies, temperatures and heat transfer coefficients. Bulk mean temperatures of CO2 at the inlet and outlet of the test section were measured with 2 K-type thermocouples. The measurements were performed for the pressure ranged from 6.48 to 7.3 MPa, inlet temperature of CO2 from 21.63 to 31.33℃, heat flux from 1.10 to 8.12 kW/m2, mass velocity from 123.2 to 315.2 kg/m2s, and vapor quality from 0 to 1. The results indicate that pressure drop is very small along the test section, heat transfer coefficient in the two-phase region is higher than that in the single-phase, and mass velocity has important effect on condensation heat transfer characteristics. In addition, experimental data were compared with previous correlations and large discrepancies were observed.

关键词： carbon dioxide condensation heat transfer pressure drop mini channels.

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Mitochondrial haplogroups associated with Japanese centenarians, Alzheimer's patients, Parkinson's patients, type 2 diabetic patients and healthy non-obese young males

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Journal of Genetics and Genomics 2009年第7期36卷 425-434页

作者： shigeru Takasaki Toyo University Izumino 1-1-1 Ouragun Itakuracho Gunma 374-0193 Japan

The relationships between five classes of Japanese people （i.e., 96 centenarians, 96 Alzheimer＇s disease （AD） patients, 96 Parkinson＇s disease （PD） patients, 96 type 2 diabetic （T2D） patients, and 96 healthy non-obese young males） and their mitochondrial single nucleotide polymorphism （mtSNP） frequencies at individual mtDNA positions of the entire mitochondrial genome were examined using the radial basis function （RBF） network and the modified method. New findings of mitochondrial haplogroups were obtained for individual classes. The five classes of people were associated with the following haplogroups： Japanese centenarians-M7b2, D4b2a, and B5b; Japanese AD patients-G2a, B4cl, and N9b1; Japanese PD patients-M7b2, B4e, and B5b; Japanese T2D patients-B5b, M8al, G, D4, and F1; and Japanese healthy non-obese young males-D4g and D4b1b. From the points of common haplogroups among the five classes, the cente- narians have the common haplogroups M7b2 and B5b with the PD patients and common haplogroup B5b with the T2D patients. In addition, the 112 Japanese semi-supercentenarians （over 105 years old） recently reported were also examined by the method proposed. The results obtained were the haplogroups D4a, B4c1a, M7b2, F1, M1, and B5b. These results are different from the previously reported haplogroup classifications. As the proposed analysis method can predict a person＇s mtSNP constitution and the probabilities of becoming a centenarian, AD patient, PD patient, or T2D patient, it may be useful in initial diagnosis of various diseases.

关键词： mtSNPs haplogroup semi-supercentenarians centenarians Alzheimer's disease Parkinson's disease type 2 diabetic patients healthy non-obese young males radial basis function (RBF)

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Photocatalytic single electron transfer reactions on TiO2 semiconductor

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Science China Chemistry 2019年第11期62卷 1439-1449页

作者： Hideto Miyabe shigeru Kohtani School of Pharmacy Hyogo University of Health Sciences

The use of inorganic semiconductor particles such as titanium dioxide(TiO2)has received relatively less attention in organic chemistry,although semiconductor particles have been widely used as a single electron transfer photocatalyst in waterpurification,air-cleaning,and *** recent years,the photocatalysis on semiconductor particles has become an active area of research even in organic chemistry,since the heterogeneous semiconductor photocatalysis leads to the unique redox organic *** an early stage,the semiconductor photocatalysis was applied to the oxidation of organic *** particles have also the potential to induce the reductive chemical transformations in the absence of oxygen(O2),by using the suitable sacrificial hole *** this review,we summarize the representative examples of the reductive and oxidative organic reactions using semiconductor particles and the recent applications to the stereoselective reactions.

关键词： photocatalyst semiconductor titanium dioxide oxidation reduction radical

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Ageing Society and Assistive Products

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稀有金属材料与工程 2006年第A3期35卷 67-70页

作者： shigeru Yamauchi Department of Health Science and Social Welfare Faculty of Human Sciences Waseda UniversityMikajima 2-579-15TokorozawaSaitama 359-1192Japan

North East Asian countries are facing to rapid increase in aged population *** most recent values of aged population ratios are 19.5%,8.7%,and 6.9%,for Japan,Korea and China,*** of the welfare services in the aged society is provision of assistive *** control systems are commonly adopted in modern assistive products and sensors are indispensable for control *** systems,such as fire alarm,smoke detectors,and gas leak detectors,have been regarded as indispensable to safety of elderly persons and persons with *** application of chemical sensors in home care of elderly persons is in the field of personal care and personal medical *** for personal medical treatment include that for medical treatment in home care and that to keep elderly persons *** market is expected in the latter one.

关键词： population ageing assistive products long term care personal mental treatment

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The structural elucidation of Eisenstein's formula

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Science China Mathematics 2010年第9期53卷 2341-2350页

作者： HASHIMOTO Masahiro KANEMITSU shigeru Department of Mathematics Wakayama College of TechnologyNoda-machi Gobo-shi 649-15Japan Graduate School of Advanced Technology Kinki University IizukaFukuoka 820-8555Japan

In this paper,we shall give a complete structural description of generalizations of the classical Eisenstein formula that expresses the first periodic Bernoulli polynomial as a finite combination of cotangent values,as a relation between two bases of the vector space of periodic Dirichlet *** shall also determine the limiting behavior of them,giving rise to Gauss' famous closed formula for the values of the digamma function at rational points on the one hand and elucidation of Eisenstein-Wang's formulas in the context of Kubert functions on the other.W shall reveal that most of the relevant previous results are the combinations of the generalized Eisenstein formula and the functional equation.

关键词： Eisenstein formula Hurwitz zeta-function polylogarithm function Gauss formula

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The Effect of Umami Stimulation on Salivary Secretion Rate and Duration

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Health（健康） 2024年第1期

作者： Eri Sambuichi Rumi Nishimura Shiho Morishita shigeru Watanabe

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Square-Free Integers as Ideal Norms

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Acta Mathematica Sinica,English Series 2010年第4期26卷 621-628页

作者： shigeru KANEMITSU Antanas LAURINCIKAS Jing MA Graduate School of Advanced Technology Kinki University Iizuka Fukuoka 820-8555 Japan Department of Mathematics and Informatics Vilnius University Naugarduko 24 LT 03225 Vilnius Lithuania Department of Mathematics Jilin University Changchun 130012 P. R. China School of Mathematics and System Sciences Shandong University Jinan 250100 P. R. China

Elaborating on Katzel＇s result, Zhai obtained a sharp short interval result for the number of ways of expressing a square-free integer as sums of two squares. In this note we view Zhai＇s decom- position as one by de... 详细信息

关键词： square-free integer ideal norm quadratic field

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New approach to resolve the amount of Quaternary uplift and associated denudation of the mountain ranges in the Japanese Islands

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Geoscience Frontiers 2016年第2期7卷 197-210页

作者： shigeru Sueoka Hiroyuki Tsutsumi Takahiro Tagami Japan Atomic Energy Agency 2-1 Shiraki Tsuruga Fukui 919-1279 Japan Department of Geophysics Division of Earth and Planetary Sciences Kyoto University Oiwake-cho Kitashirakawa Sakyo-ku Kyoto 606-8502 Japan Department of Geology and Mineralogy Division of Earth and Planetary Sciences Kyoto University Oiwake-cho Kitashirakawa Sakyo-ku Kyoto 606-8502 Japan

Low-temperature thermochronology is a widely used tool for revealing denudation histories of mountain ranges. Although this technique has been applied mainly to continental orogens, such as the European Alps, Himalayas, and Andes, recent technological development of low-temperature thermochronology has made it applicable to a wider variety of mountain ranges with various sizes and tectonic histories. The Japanese Islands comprise young and active island arcs, where an early stage of mountain range formation is observed. Numerous attempts have been made to constrain the uplift and denudation histories of the mountains in the Japanese Islands using geologic, geomorphologic, or geodetic methods. However, the number of thermochronometric attempts has been limited primarily due to the small amount of total denudation since the initiation of the uplift. In this review paper, we introduce the tectonic and geomorphic settings of the mountain ranges in the Japanese Islands, and discuss previous attempts to estimate uplift or denudation of the Japanese mountains using methods other than ther- mochronology. Furthermore, we discuss problems of the thermochronometric applications in revealing denudation histories of the Japanese mountains. Finally, we present a case study of the Kiso Range in central Japan and discuss the current effectiveness and applicability of low-temperature thermochronology to the Japanese mountainous areas.

关键词： Low-temperature thermochronology Denudation Japanese Islands Fault-block mountain T-d relationships

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