result 47822 件
| JaLCDOI | 10.18926/fest/11523 |
|---|---|
| FullText URL | 007_039_044.pdf |
| Author | Watanabe, Masaji| |
| Abstract | We present some results of a finite element analysis for an unsteady flow in Kojima Lake. We also present an experimental result. The global positioning system was utilized in the experiment in order to record the temporal and the spatial data of a float traveling with the driving force of the fluid resistance. The spatial and temporal data were recorded to examine their correspondence with analytical results. |
| Keywords | lake flow numerical simulation finite element method global positioning system |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 39 |
| End Page | 44 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313386 |
| JaLCDOI | 10.18926/fest/11522 |
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| FullText URL | 006_011_015.pdf |
| Author | Watanabe, Masaji| Kunisada, Shigeyuki| |
| Abstract | The global positioning system is utilized in lake flow analysis to facilitate experimental evaluation for numerical results of a lake flow simulation. In our lake flow experiment a float travels on the lake surface receiving the fluid resistance due to lake flow, while a global positioning system receiver keeps track of its position. A momentum equation is derived when the product of the float mass and its acceleration is set equal to the driving force. The temporal change in the position of the float can be simulated when numerical solutions of lake flow equations are given. A comparison of numerical results and experimental data leads to an evaluation of the numerical simulation of lake flow. |
| Keywords | lake flow numerical simulation GPS-float finite element method |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2001-02-28 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 11 |
| End Page | 15 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313583 |
| JaLCDOI | 10.18926/fest/11521 |
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| FullText URL | 007_031_038.pdf |
| Author | Zhang, Fanghong| Tanaka, Yutaka| |
| Abstract | Relationship has been discussed by Tanaka and Zhang(1999) between the sensitivity analyses based on influence functions and on Cook's local influence, and it has been shown that equivalent results are obtained under general conditions by these analyses in statistical modeling without/with equality constraints. However, a condition implicitly assumed in the proof in Tanaka and Zhang(1999) in the case with equality constraints does not necessarily hold. The present paper gives a complete proof without assuming the condition. Also a formula for the normal curvature is derived for the convenience of practical computation. |
| Keywords | Local influence influence function equality constraints |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 31 |
| End Page | 38 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313336 |
| Author | Hasegawa, Koichi| |
|---|---|
| Published Date | 2007-03-23 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| JaLCDOI | 10.18926/fest/11519 |
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| FullText URL | 007_023_029.pdf |
| Author | Sung, JiMin| Yang, WooSung| Tanaka, Yutaka| |
| Abstract | Analysis of covariance selection models is a useful multivariate method to analyze the covariance structure of a multivariate normal distribution. It is used to reveal cause-and-effect relationships. In the present paper we review the theory and study numerically how the stepwise procedure of covariance selection works in actual data analysis. Then we try to develop a method of influence analysis in covariance selection, and show a numerical example to illustrate the usefulness of the method of influence analysis. |
| Keywords | Covariance Selection Local Influence Influence Function Stepwise Procedure |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 29 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002314018 |
| Author | Chikamori, Ken-ichi| |
|---|---|
| Published Date | 2007-03-23 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | Uehara, Shinya| |
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| Published Date | 2007-03-23 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| JaLCDOI | 10.18926/fest/11516 |
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| FullText URL | 006_001_010.pdf |
| Author | Tomita, Makoto| Otake, Masanori| |
| Abstract | In many epidemiological and medical studies, a number of cancer motralities in catagorical classification may be considered as having Poisson distribution with person-years at risk depending upon time. The cancer mortalities have been evaluated by additive or multiplicative models with regard to background and excess risks based on several covariances such as sex, age at the time of bombings, time at exposure, or ionizing radiation, cigarette smoking habits, duration of smoking habits, etc. An interest herein to examine an additive, synergistic,or antagonistic relationship between radiation exposures and cigarette smoking habits for cancer mortalities. The results revealed a highly significant antagonistic influence for cancer mortalities from all nonhematologic findings, lung and respiratory system with negative interaction between radiation exposures and cigarette smoking amounts. |
| Keywords | Excess relative risks cancer mortalities antagonistic effects prospective studies atomic bomb survivors |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2001-02-28 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 10 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313814 |
| JaLCDOI | 10.18926/fest/11515 |
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| Title Alternative | Stability analysis of mathematical models of infectious disease |
| FullText URL | 007_017_021.pdf |
| Author | Murase, Akiko| Sasaki, Toru| Kajiwara, Tsuyoshi| |
| Abstract | Dynamics of infectious disease in vivo is described by coupled differential equations. Stability analysis of the complicated systems is difficult without computer calculation, while stability analysis is, in general, important to investigate qualitative behaviour of models. Liu analyzes stability of systems describing HIV dynamics in vivo with a symbolic calculation software. The same method is used for stability analysis of a mathematical model of malaria. |
| Keywords | mathematical model infectious disease dynamics in vivo stability analysis symbolic calculation |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 17 |
| End Page | 21 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313783 |
| JaLCDOI | 10.18926/fest/11514 |
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| Title Alternative | Preparation of Biodegradable Polymer Microcapsules Enclosing Anti-mite Agent |
| FullText URL | 008_103_106.pdf |
| Author | Minobe, Kouichi| Yoshizawa, Hidekazu| Kitamura, Yoshiro| |
| Abstract | Many kinds of mite was caused by allergy and sick house syndrome, so it has become one of the social problems. Farnesyl acetone is one of the most potent anti-mite agent. However the vapor pressure of farnesyl acetone is high even at room temperature. This indicates the anti-mite effect has not been sustained even though the agent has strong anti-mite effect. In this study, we attempted to prepare polylactide microcapsule with farnesyl acetone for the purpose of sustainable dosage form of anti-mite agent. Microcapsule was prepared by solvent evaporation, which was a method of microencapsulation. The effects of preparation conditions on the enclosing efficiency, the release of microcapsule and anti-mite effect of microcapsule were investigated. |
| Keywords | farnesyl acetone anti-mite effect polylactide microcapsule solvent evaporation |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2003-03 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 103 |
| End Page | 106 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002314003 |
| JaLCDOI | 10.18926/fest/11513 |
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| Title Alternative | Decontamination of Waste-water by Metal Phthalocyanines Encapsulated in Polymeric Microcapsules |
| FullText URL | 008_097_101.pdf |
| Author | Takami, Koji| Yoshizawa, Hidekazu| Sakata, Isao| Kitamura, Yoshiro| |
| Abstract | Polymeric microcapsules encapsulating iron phthalocyanine (Fe-Pc) and zinc phthalocyanine (Zn-Pc) were successfully prepared in this study. Absorption spectra of polymeric microcapsules encapsulating metal phthalocyanines were measured in visible light range. It was expected from the results that the polymeric microcapsules encapsulating metal phthalocyanines showed high photocatalytic activity upon irradiation with visible light such as sunlight. The catalytic and phtocatalytic activities of encapsulated Fe-Pc and Zn-Pc were investigated in the decomposition of methylene blue in water. The encapsulatedd Fe-Pc with H(2)O(2) exhibited a high catalytic activity. Methlene blue was efficiently decomposed by interaction of Fe-Pc with H(2)O(2). |
| Keywords | microcapsule decomposition metal phthalocyanine waste-water treatment suspension polymerizatio |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2003-03 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 97 |
| End Page | 101 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313830 |
| JaLCDOI | 10.18926/fest/11512 |
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| FullText URL | 007_007_016.pdf |
| Author | Ishii, Hiroyuki| Ishikawa, Hirofumi| Ohga, Yukio| |
| Abstract | We have constructed a stochastic transmission model for lymphatic filariasis caused by Wuchereria bancrofti, and have analyzed its prevalence using computer simulations. In Pondicherry, India, where Wuchereria bancrofti has been spreading, the Vector Control Research Centre has carried out an integrated vector control strategy against malaria and filariasis for five years (1981~1985) with good results reported. Our study was aimed at evaluating the effect of vector control in the context of Pondicherry, and in particular the continuous effect for the post-control period. In this paper, we have used the LYMFASIM model proposed by Plaisier et al., the carrying capacity model by Rochet and the population dynamics model by us. In the LYMFASIM model and the carrying capacity model, we have modified the quantities of parameters in order to fit the models to the parasitological, entomological and epidemiological data in Pondicherry. We have combined the improved LYMFASIM model with the other models. Through simulations of our combinated model, we have compared the prevalence rate in the human population as well as the mean number of L3-larvae in the mosquito population, with and without vector control. As a result, the simulations show that the prevalence rate would be restrained for a long time even if only a small continuous effect of the vector control remains in the post-control period. However, the mean number of L3-larvae would recovered within a short time comparatively. This is because of the differences in life spans between human and mosquito as well as the incubation periods between the adult worm in the human host and L3-larvae in the mosquito vector. |
| Keywords | Lymphatic filariasis mathematical model Pondicherry vector control Wuchereria bancrofti |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 7 |
| End Page | 16 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313471 |
| JaLCDOI | 10.18926/fest/11511 |
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| FullText URL | 008_093_096.pdf |
| Author | Nagamine, Shinsuke| Takahashi Shinsuke| Sasaoka, Eiji| |
| Abstract | Nanoporous TiO(2) were synthesized via hydrolysis of titanium tetraisopropoxide (TTIP) in HCl acidic conditions using sodium dodecylsulfate (SDS) as a templating agent. The order of the nanostructure of samples before calcination was improved with increasing the SDS/TTIP molar ratio. The calcined samples presented uniform mesopore structure with the average diameter of 4-5 nm and considerably large surface areas over 200m(2)/g, although the periodicity of the nanostructure was exceedingly reduced by the removal of the template. The prepared TiO(2) exhibited exceedingly higher activities on the catalytic oxidation of benzene compared to the commercial TiO(2), probably due to the difference of their pore suructures. |
| Keywords | template titania lamellar nanostructure nanopore structure catalyst |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2003-03 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 93 |
| End Page | 96 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313373 |
| JaLCDOI | 10.18926/fest/11510 |
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| FullText URL | 007_001_005.pdf |
| Author | Ohga, Yukio| Ishikawa, Hirofumi| Doi, Rikuo| Ishii, Hiroyuki| |
| Abstract | In our study, we have investigated the influence of the intermediate host population density on the prevalence of Echinococcus multilocularis in the definitive host using a mathematical model of transmission. For the vole population (intermediate host) in Hokkaido, a model of population dynamics has been constructed in this paper which follows the seasonal and annual fluctuations. In the northeastern area, the vole density appears to fluctuate periodically with a 4 year cycle. The prevalence of Echinococcus multilocularis in the fox population (definitive host) can be affected by the density of vole through the fox ingesting infectious voles. Therefore we have prepared a food habit function of foxes and the logistic distribution has been proposed. The simulations which have been carried out using the mathematical model for transmission of Echinococcus multilocularis together with the vole dynamics have indicated that the prevalence in foxes is correlated and synchronized with the population dynamics of vole. In addition they have also made us recognize that it is necessary to introduce a suitable food habit function into the transmission model. |
| Keywords | Echinococcus multilocularis food habit of foxes Hokkaido population dynamics vole |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2002-03-22 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 5 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| JaLCDOI | 10.18926/fest/11509 |
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| Title Alternative | The Outline of Totaling Result of The Class Evaluation Questionnaire by Students in 2001 |
| FullText URL | 008_087_092.pdf |
| Author | Oki, Yoko| |
| Abstract | The committee of academic affairs of the Faculty of Environmental Science and Technology in 2001 planned and carried out "the class evaluation questionnaire survey by students" with original one. The committee has announced the totaling result of this survey, especially concerning both of the class evaluation and the self-estimation of student by themselves, in this paper. It is expected that these contents become the aid of the class improvement in near future. |
| Keywords | The class evaluation questionnaire students 2001 committee of academic affairs outline of totaling result |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2003-03 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 87 |
| End Page | 92 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313803 |
| JaLCDOI | 10.18926/fest/11508 |
|---|---|
| FullText URL | 010_111_117.pdf |
| Author | Alam Ashraful| Takaguchi, Yutaka| Tsuboi, Sadao| |
| Abstract | Synthesis of ellagic acid and its 4,4'-di-Ο-alkyl derivatives from gallic acid is described. Ellagic acid is prepared by oxidative coupling of gallic acid with ο-chloranil. Functionalized methyl bormogallate underwent Ullmann coupling to give the biphenyl that upon lactonization resulted in the ellagic acid and its alkoxy derivatives. |
| Keywords | ellagic acid 4,4'-di-Ο-alkylellagic acid Ullmann coupling oxidative coupling |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2005-02-28 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 111 |
| End Page | 117 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313598 |
| JaLCDOI | 10.18926/fest/11507 |
|---|---|
| Title Alternative | Survey on Spatial Variability of Surface Soil Moisture and Soil Physical Properties in a Sloping Grassland Field |
| FullText URL | 008_081_085.pdf |
| Author | Moroizumi, Toshitsugu| |
| Abstract | Spatial variability of surface soil moisture, bulk density, satureted hydraulic conductivity, and penetration resistance (cone index) in a sloping grassland field were surveyed. The typical results were as follows: (1) The surface soil moisture and the bulk density were normally distributed at a significant level of 0.05. (2) The surface soil moistures were higher at low area than in high and slope area. The coefficients of variation were larger at slope area. (3) The coefficients of variation for bulk density were larger at slope area than in low area. (4) The distribution of saturated hydraulic conductivity can be considered to be log-normally distributed. (5) The cone index showed the normal distribution. |
| Keywords | Spatial variability Surface soil moisture Bulk density Saturated hydraulic conductivity Cone index |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2003-03 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 81 |
| End Page | 85 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313346 |
| JaLCDOI | 10.18926/fest/11506 |
|---|---|
| FullText URL | 010_105_109.pdf |
| Author | Alam Ashraful| Takaguchi, Yutaka| Tsuboi, Sadao| |
| Abstract | Ortho-monobromination of phenols and polyphenols by 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) is described. A simple addition of commercially available DBDMH to phenols and polyphenols in chloroform at room temperature resulted in a good to excellent yield of corresponding ortho-monobromo derivatives. |
| Keywords | ortho-monobromination phenol polyphenol DBDMH |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2005-02-28 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 105 |
| End Page | 109 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313473 |
| JaLCDOI | 10.18926/fest/11505 |
|---|---|
| Title Alternative | Illegally Parked Bicycles around the Okayama Station - Withdrawal, Storage and Return of Them - |
| FullText URL | 010_089_103.pdf |
| Author | Toyoki, Yosuke| Ichiminami, Fumikazu| |
| Abstract | In this paper, first it is investigated illegally parked bicycles around the Okayama station, withdrawal, storage and return of them. Second, there will be a questionnaire to understand citizen's consciousness and clarify how they have been grasped present condition. Furthermore, it is aimed that considering how to carry out an efficient activity for reducing number of illegally parked bicycles. The results are concluded as follows. It is much more required to strengthening in the criminal prohibition zone by applying withdrawal activities and regulations. Presumably, first it is required to change storage area in order to increase the rate of returned bicycles. Besides, it will be great improvement in rate of return, if definite proportion of area is confidentially secured on storage area near the Okayama station. Moreover, it was remarkable that a citizen was not known in detail about an illegally parked bicycle. On the other side, recognition of most of the suburbanite of Okayama-shi tends to be impervious and replied to affirm illegally parked bicycle. However, the residents who live an area near to station understood the present condition well, and they disapprove to the illegally parked bicycle. Finally, in order to improve present condition, to prevent completely and to decrease the number of illegally parked bicycles publicity work is required. |
| Keywords | Illegally Parked Bicycle Okayama Station Storage Area Publicity Work |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2005-02-28 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 89 |
| End Page | 103 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313985 |
| JaLCDOI | 10.18926/fest/11504 |
|---|---|
| Title Alternative | The Nature of Tsuyama Region based on Changing Chief Industries |
| FullText URL | 008_063_079.pdf |
| Author | Ichiminami, Fumikazu| |
| Abstract | In this paper, the nature of Tsuyama region was explained in terms of several changing features such as agricultural, industrial, commercial, and sight-seeing activities. Also, short history of mining sulfide ore at Yanahara Town was described and the population change of surrounding area was analyzed. Although the vitality of agriculture in general has gradually fallen mainly due to the decrease of number of farm household, of the rate of full-time farm household, of the area of farmland, and of the harvested area of rice, tobacco, and Japanese radish, the production of black syobean and the rate of vegetables, etc. have increased. After the highway of Chugoku line was opened to traffic, the number of industrial parks and establishments suddenly increased in and around Tsuyama City and they employed many workers. Within the industries of Tsuyama City, manufactures of genaral and electrical machineries, equipment and supplies developed, but the ones of textile mill products, apparel and other finished products made from fabrics and similar materials declined. In sight-seeing, tourists of Yunogou spa have increased in a satisfactory. Population of the municipalities except Tsuyama City have decreased since 1970 and a number of large-sized stores have come to be located in the suburbs of Tsuyama City. |
| Keywords | Tsuyama region Tsuyama City Agriculture Industrial Park Sight-seeing City |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2003-03 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 63 |
| End Page | 79 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313775 |
