検索結果 35246 件
| JaLCDOI | 10.18926/fest/11476 |
|---|---|
| タイトル（別表記） | Evaluation of Surface State of Ceramic Particles Suspended in Aqueous Solution by Potentiometric Titration Method |
| フルテキストURL | 009_153_162.pdf |
| 著者 | 三浦 嘉也| 難波 徳郎| 篠田 真克| |
| 抄録 | Surface states of ceramic particles such as SiO(2), Al(2)O(3), Si(3)N(4) and so on suspended in aqueous alkaline solutions were successfully and easily determined by a potentiometric titration method. Isoelctric point, iep and excess surface charge density were classified and evaluated for many ceramic particles from the view points of aggregation and dispersion of particles and solubility in aqueous solution. |
| キーワード | potentiometric titration method isoelctric point excess surface charge density ceramic particle suspension aqueous solution |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 153 |
| 終了ページ | 162 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313753 |
| JaLCDOI | 10.18926/fest/11475 |
|---|---|
| タイトル（別表記） | Material Recycling of Municipal Waste Slags by Using Phase Separation of Glass |
| フルテキストURL | 012_161_165.pdf |
| 著者 | 今岡 卓也| 崎田 真一| 難波 徳郎| 三浦 嘉也| |
| 抄録 | A novel recycling process of municipal waste slags obtaining Fe-free colorless materials was developed by using a phase separation of borosilicate glass. B(2)O(3) was added to a simulated waste slag to promote the phase separation. The slag glasses were heat-treated above glass transition temperatures, from which phase separation was successfully induced. The phase-separated slag glasses were still colored in black due to Fe ions, and after soaking in acid, they were successfully bleached, obtaining colorless solids. According to compositional analyses, no Fe ions were confirmed in the remaining insolubles, indicating that Fe ions were preferentially incorporated into the borate-rich phases soluble in acid. The main constituent of the colorless solids was SiO(2) and the end products obtained in the present process were expected as an alternative of pure silica glass. |
| キーワード | slag recycling colorless glass phase separation |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2007-03-15 |
| 巻 | 12巻 |
| 号 | 1号 |
| 開始ページ | 161 |
| 終了ページ | 165 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313957 |
| JaLCDOI | 10.18926/fest/11474 |
|---|---|
| タイトル（別表記） | Agricultural trend of Inner Mongolia And Policy of Replacing Agriculture by Afforestation A Case Study of Zhuo Zi Xian, Wu Lan Cha Bu Meng |
| フルテキストURL | 009_141_151.pdf |
| 著者 | 杜 富林| 品部 義博| |
| 抄録 | In this paper, Background of Policy of Replacing Agriculture by Afforestation is clarified by means of the relation of the local Agricultural trend due to performance of the policy, united it the influence in the living and agriculture production to farmer in Zhuo Zi Xian. The investigation to the feasibility of the policy is based on the statistics data and the investigation of the agriculture in Inner Mongolia of China. In progress of the Policy of Replacing Agriculture by Afforestation, change of crop structure and development of animal husbadry were mainly seen in local agriculture. It made "Replacing Agriculture by Afforestation" possible. In order to perform this policy, to prevent retrogradation and develop local Agriculture continuously, technological development and spread in the Sustainable Agriculture, Training of Products processing company and Exploitation of the Products market of Agriculture, Forestry and Stockbreeding should be considered in the future study. |
| キーワード | replacing agriculture by afforestation policy make one stop two Return three Agricultural trend Inner Mongolia China |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 141 |
| 終了ページ | 151 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313842 |
| JaLCDOI | 10.18926/fest/11473 |
|---|---|
| タイトル（別表記） | Acceleration of Formation of Shish under Flow by Addition of Irregular Shaped Particles |
| フルテキストURL | 012_157_160.pdf |
| 著者 | 山崎 慎一| 若林 完爾| 水間 健太| 木村 邦生| |
| 抄録 | We have shown that the shish was formed from the oriented melt composed of the elongated chains caused by dust particles within the melt via bundle typed nucleation under flow with low shear rate (γ=5s(-1)). This implies that dust particles effectively cause the elongation of chains within the melt. In this work, we observed the crystallization of polypropylene added with irregular shaped particles under shear flow by means of polarizing optical microscope. We prepared various shaped particles such as confetti-like, spherical and rock-like. We found that the size and asymmetric shape of additive particles play an important role for the acceleration of formation of shish. |
| キーワード | shish crystallization polypropylene shear flow elongation injection molding |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2007-03-15 |
| 巻 | 12巻 |
| 号 | 1号 |
| 開始ページ | 157 |
| 終了ページ | 160 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313610 |
| JaLCDOI | 10.18926/fest/11472 |
|---|---|
| タイトル（別表記） | Chemical Changes of Dredged Soil in Kojima Lake from the Viewpoint of Soil Reaction |
| フルテキストURL | 009_137_140.pdf |
| 著者 | 武村 光一郎| 足立 忠司| |
| 抄録 | While dredged soil is increasing, the processing problem isn't solved. So it is expected to use effectively as the soil material. Although, to use dredged soil, the chemical characteristic must be grasped. It is because acidification cause material (pyrite) can be contained in dredged soil. It causes sulfulic ions when it touches air and has the possibility to become acidification. In this experiment, dredged soil in Kojima Lake was made clear that it contained in pyrite and acidified under the oxidation condition. Accordingly, when using dredged soil as ground resources, it is necessary to use as the soil material such as filling-up reclamation under the deoxidization condition. |
| キーワード | dredged soil pyrite acidify soil moisture condition |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 137 |
| 終了ページ | 140 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313330 |
| JaLCDOI | 10.18926/fest/11470 |
|---|---|
| タイトル（別表記） | Diversity of Agricultural Production and Its Change in Tottori Prefecture |
| フルテキストURL | 009_121_135.pdf |
| 著者 | 市南 文一| |
| 抄録 | In this paper, diversity of agricultural production and its change was examined for some 45 years in Japan and for 1960, 1980, and 2000 in Tottori prefecture. The concept of entropy was used in order to measure the diversity of the agricultural production which consists of some sections. Agricultural production section in Japan has been diversified in the long run. The ratio of rice has been decreasing gradually for a policy of cutting back on the acreage under cultivation. Although the ratio of stock raising and fruits has increased, it tends in recent years to stagnate. The rate of vegetables has increased remarkably. Combination type for every municipalities was determined with the standard value A method, and complemented examination of agricultural diversity. |
| キーワード | Agricultural Production Diversity Entropy Sustainability Tottori Prefecture |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 121 |
| 終了ページ | 135 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313477 |
| JaLCDOI | 10.18926/fest/11469 |
|---|---|
| タイトル（別表記） | Measurement of thermal conductivity in soils and application of de Vries model |
| フルテキストURL | 009_117_120.pdf |
| 著者 | 諸泉 利嗣| 佐藤 裕一| 佐藤 幸一| 佐々木 長市| |
| 抄録 | Thermal conductivity of soil samples were measured using a twin transient-state cylindrical-probe method. The system of measurement consists of DC power supply, data logger, personal computer, 100cc soil sample, reference material sample, and two heat probes. The typical results were as follows: (1) Thermal conductivity of soils increased according to an increase of soil water content. (2) The thermal conductivity of Toyoura sand was larger than one of Kuroboku soil. (3) The thermal conductivity estimated by de Vries model had good agreement with the measured value. |
| キーワード | Thermal conductivity Twin transient-state cylindrical-probe method de Vries model Volumetric water content |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 117 |
| 終了ページ | 120 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313616 |
| JaLCDOI | 10.18926/fest/11467 |
|---|---|
| タイトル（別表記） | Rows-of-houses Preservation in Maniwa City of Katsuyama Area, Okayama Prefecture |
| フルテキストURL | 012_141_149.pdf |
| 著者 | 羅 燕娟| 市南 文一| |
| 抄録 | The aim of the study is to explain the present condition of the rows-of-houses preservation policy of Okayama Prefecture and to examine the samples in Maniwa city, Katsuyama area. Besides, the interview investigation was mainly conducted for residents in the rows-of-houses of preservation area in Katsuyama for giving the concluding remarks about the findings. The traditional private houses in Katsuyama preservation area were partially restored in the 1985-89 and 1993-97 fiscal years by the subsidy from the prefecture. Furthermore, Katsuyamacho at that time founded the subsidy system for maintaining rows-of-houses preservation area (about 25.3 ha) independently in 1993, restored 9 private houses, and made and updated the shop curtains; "Noren". In the point of the observable items, the ground warehouse of structures with gable tile-roofing is visible and it is also in use. Moreover, a latticed window structure, a white wall, and a sea cucumber wall constitute the charm of new rows-of-houses. A stone pavement follows on the riverside at the site facing the Asahi River. There are the remains of an arrival-and-departure place of a flat boat and a brewery, etc. According to our investigation in 2002, the residents were satisfied with "It is easy to live quietly", "the beauty of a natural landscape", "harmony of rows-of-houses and a shop curtain", and "a historical atmosphere", but the recognition of "the creation of active rows-of-houses" was unexpectedly low. Therefore, cooperation between residents and informational sharing are much more required. Consequently, since both the visitors and the residents are satisfied very much with each facilities, such as the whole rows-of-houses, a samurai residence, a brewery, and a restaurant etc., town planning is well organized and attained the priority targets. |
| キーワード | Rows-of-houses Preservation Katsuyama area Visitors Residents |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2007-03-15 |
| 巻 | 12巻 |
| 号 | 1号 |
| 開始ページ | 141 |
| 終了ページ | 149 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313778 |
| JaLCDOI | 10.18926/fest/11465 |
|---|---|
| タイトル（別表記） | A Survey Study of Residential Awareness on Utilization Function of Agricultural Water and Its Maintenance --A case study in Niwase and Natsukawa of Okayama City, Okayama Prefecture |
| フルテキストURL | 012_131_140.pdf |
| 著者 | 牧野 透太| 松岡 崇暢| 戚 智勇| 品部 義博| |
| 抄録 | The agricultural water has manifold functions for farming at community level. However, along with the difficulties to maintain the agriculture water path that are caused by the decreasing of farmers and the aging of the society, the agricultural water is losing its functions even that as water resource for local community. This paper presents a survey of the residential awareness on regional water utilization to find the possibility for the maintenance of agricultural water path. Economic evaluation is tried for the regional warter utilization function. This study is carried out at a regional level that covers both farming households and non farmers. Following three points can be confirmed based on the results of questionnaire survey. Firstly, local citizens admit that the agricultural water does have some values (3,037 Yen per household per year). Secondly, the higher the environmental awareness is, and the longer the citizen has lived there, the higher evaluation to function of the agricultural water can be observed. Thirdly, even within those who is holding high evaluation to the agricultural water, it is thought to be quite difficult to maintain the agricultural water path due to the aging of the society and uneven distribution of the participants. |
| キーワード | agricultural water manifold functions for farming at community level local citizens maintenance Contingent Valuation Method |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2007-03-15 |
| 巻 | 12巻 |
| 号 | 1号 |
| 開始ページ | 131 |
| 終了ページ | 140 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313592 |
| JaLCDOI | 10.18926/fest/11463 |
|---|---|
| タイトル（別表記） | Heat Budget on Rice Field |
| フルテキストURL | 009_081_085.pdf |
| 著者 | 楊 冬梅| 岩田 徹| 三浦 健志| 大滝 英治| |
| 抄録 | Experience of flux measurements over tall canopies has revealed that the eddy flux of sensible plus latent heat is about 30% smaller than the available radiant energy flux. A systematic observation was carried out to investigate the imbalance problem on rice field. The rice field represents a complex system consisting of rice plant, irrigated water and soil. Date obtained in this experiment show that appreciable understimations of sensible and latent heat fluxes are not recognized but understimations of 15 to 23% are counted in the soil heat flux. |
| キーワード | Heat budget Eddy correlation method Sensible heat flux Latent heat flux Soil heat flux |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 81 |
| 終了ページ | 85 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313468 |
| JaLCDOI | 10.18926/fest/11462 |
|---|---|
| タイトル（別表記） | Comparison of micrometeorological environments inside and outside an oriental pickling melon greenhouse. |
| フルテキストURL | 012_125_130.pdf |
| 著者 | 森本 祐二| 平野 絵美| 三浦 健志| |
| 抄録 | The use of greenhouses has rapidly increased after 1965, and the area became 11 times of 1965 as of 2001. Meteorological conditions and soil moisture environments inside a greenhouse are significantly different from those in the open field. These differences should be understandable to establish accurate predictions of water consumption and evapotranspiration inside a greenhouse which play important roles in the design of any irrigation system. This study aims to estimate the micrometeorological conditions inside an oriental pickling melon greenhouse which can be used for evapotranspiration calculations. Therefore, micrometeorological data were measured inside and outside the greenhouse for the comparison purposes. The results of this study may be summarized as: (1) Solar radiation inside the greenhouse was decreased about 30% of that of outside it by plastic film and frame. (2) Net radiation during the daytime inside the greenhouse was almost the same as the absorbed total short-wave radiation. (3) The difference of daytime mean air temperature inside and outside the greenhouse was between 3 and 4 degree Celsius in day average. (4) Both relative humidity and saturation deficit inside the greenhouse were higher than outside, and those were affected by ventilation. (5) Wind speed inside the greenhouse was greatly affected by opening rate of the house side. |
| キーワード | greenhouse micrometeorology oriental pickling melon |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2007-03-15 |
| 巻 | 12巻 |
| 号 | 1号 |
| 開始ページ | 125 |
| 終了ページ | 130 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313863 |
| JaLCDOI | 10.18926/fest/11461 |
|---|---|
| タイトル（別表記） | The Study of Monin-Obukhov Similarity of Vertical Wind Velocity and Scalar Quantities in the Atmospheric Surface Layer |
| フルテキストURL | 009_075_079.pdf |
| 著者 | 牛川 希望| 岩田 徹| 大滝 英治| |
| 抄録 | Standard deviations for vertical wind velocity and scalar quantities, such as carbon dioxide,c, and water vapor,q, were analyzed on the basis of Monin-Obukhov similarity theory in the atmospheric surface layer. The correlation coefficient between scalar quantities c and q ,|R(cq)|, was derived from the similarity functions and can be expressed as the ratio of B(q)/B(c)(B(q)≤B(c)), where parameter B is the value of the normalized standard deviation of carbon dioxide and water vapor at neutral conditions. |
| キーワード | Monin-Obukhov similarity theory Standard deviation Correlation coefficient Carbon dioxide Water vapor |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 75 |
| 終了ページ | 79 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313729 |
| JaLCDOI | 10.18926/fest/11460 |
|---|---|
| タイトル（別表記） | Measurement of root system with growth of oriental pickling melon. |
| フルテキストURL | 012_119_123.pdf |
| 著者 | 平野 絵美| 森本 祐二| 三浦 健志| |
| 抄録 | It is important to clarify how the soil moisture changes by irrigation and how moisture is consumed by absorption of root, to plan irrigation appropriately in upland field. And, it is thought that clarifying the growth of the root can be important information in the water management, because the amount and the pattern of root water uptake change depending on the growth stage. However, there are not too much a lot of researches that measure the root, in addition, the example intended for crops of 'Gourd family (scientific name:Cucurbitaceae)' is not found. Therefore, for oriental pickling melon, it measured how for the root system to grow up as crop grew every three weeks. The results of this study may be summarized as: 1) Root amount increased with the growth of crops, and the majority of the root existed to 20cm in depth. A lot of rootlets with the role of water uptake existed outside of from 10 to 20cm. 2) Root length has grown up in horizontal and vertical direction at a dash at the stage of growing initial. 3) It was able to be confirmed to the growth of the ground part and the root that the length and amount either also had implications. Moreover, root amount and plant caver ratio drew similar curve. |
| キーワード | root growth oriental pickling melon |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2007-03-15 |
| 巻 | 12巻 |
| 号 | 1号 |
| 開始ページ | 119 |
| 終了ページ | 123 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313695 |
| JaLCDOI | 10.18926/fest/11459 |
|---|---|
| タイトル（別表記） | CO(2) Fluxes Measured by Eddy Correlation and Aerodynamic Techniques |
| フルテキストURL | 009_069_073.pdf |
| 著者 | 猪原 幸子| 岩田 徹| 大滝 英治| |
| 抄録 | To elucidate the seasonal and inter-annual variation of CO(2) exchanges between the atmosphere and cultivated field in Japan, the CO(2) flux has been measured by the eddy correlation technique at the experimental farm of Agricultural Faculty, Okayama University since December in 1998. The CO(2) sensor, however, does not work under rainy conditions. The improved aerodynamic technique was developed and used to cover CO(2) flux data which were not collected. This technique gives reasonable CO(2) fluxes even in rainy days. The reliability of the technique was also confirmed by comparing CO(2) fluxes with those measured by the eddy correlation technique using data in fine weather conditions. |
| キーワード | CO(2) flux Eddy correlation technique Aerodynamic techniques Dimensionless profile |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 69 |
| 終了ページ | 73 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313999 |
| JaLCDOI | 10.18926/fest/11458 |
|---|---|
| タイトル（別表記） | Numerical Simulation of a Flow Induced by a Pumping-up Facilities in a Lake |
| フルテキストURL | 009_065_068.pdf |
| 著者 | 水藤 寛| 苗加 昌克| |
| 抄録 | The purpose of this research is solving the flow in a lake which caused by a fan who rotates at the low speed set on the water surface for the purpose of water quality purification of a lake. Although it is shown clearly by various experiments that the water quality in a lake improved by operation of this kind of equipment, the mechanism of the flow was not fully understood. In this research simulation of the flow which was caused by this equipment was carried out numerically, and the aspect of the flow corresponding to various conditions or the form of a lake was investigated. |
| キーワード | Fluid dynamics Numerical simulation |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 65 |
| 終了ページ | 68 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313524 |
| JaLCDOI | 10.18926/fest/11457 |
|---|---|
| タイトル（別表記） | Study on Effects of the Density Current Generator by Experiment and Measurement |
| フルテキストURL | 009_059_064.pdf |
| 著者 | 渡辺 雅二| 山磨 敏夫| |
| 抄録 | The density current generator (Manufacturer: Nakashima Propeller Co., Ltd., Patent owner: Hitachi Metals, Ltd.) is designed to generate vertical circulation over a wide water area harnessing the density current effect. We present some experimental results that we obtained using a float equipped with a GPS unit to study water flows generated by a density current generator unit set in S-Reservoir in Okayama Prefecture. We also present some measured results concerning the water temperature around the unit. We discuss its effects observing the experimental results and the measured results. |
| キーワード | density current stratification water environment |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 59 |
| 終了ページ | 64 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313754 |
| JaLCDOI | 10.18926/fest/11447 |
|---|---|
| タイトル（別表記） | Development of the Mesh Data Analysis System |
| フルテキストURL | 009_001_007.pdf |
| 著者 | 牛 冬慧| 垂水 共之| |
| 抄録 | Area mesh statistics is a kind of small area statistics. The area mesh data of Japan can be created in a lot of way and many of them can be downloaded, for example, from the land's value information service which is provided by Ministry of Land, Infrastructure and Transport of Japan. We developed database of these area mesh data. By using mesh navigator software (Makita Naoki, 1997), which needs to run on ProAtlas2000 and Microsoft Access2000, we displayed the mesh data on the map. What visualized on the map is very convenient. For extending the advantages of area mesh data to spatial geographical statistics, we used PostgreSQL to develop a new database of mesh data. We also develop some programs in Delphi for the analysis of area mesh data, such as Histogram, Echelon analysis, and etc. |
| キーワード | Area mesh data PostgreSQL PQCompo ProAtlas2000 |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2004-02-27 |
| 巻 | 9巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 7 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313385 |
| JaLCDOI | 10.18926/fest/11445 |
|---|---|
| タイトル（別表記） | Emulsification Properties of Poly(lactide-block-ethylene glycol-block-lacticide) Block Polymers |
| フルテキストURL | 011_107_110.pdf |
| 著者 | 松本 康夫| 北村 吉朗| 吉澤 秀和| |
| 抄録 | Homo-and copolymers of poly(lactic acid) have gathered much attention because of their biodegradability and biocompatibility. They have numerous applications in the biomedical field due to their potential. In their polymers, we are interested in poly(lactic acid)-poly(ethylene glycol) block polymers. The amphiphilic triblock copolymers, poly(DL-lactic acid)-poly(ethylene glycol)-poly(DL-lactic acid)(PLEL), have known to be surface-active ability. Therefore, we have studied emulsification properties with the polymers. PLEL were prepared by ring-opening copolymerization of DL-lactide and poly(ethylene glycol) catalyzed by stannous 2-ethylhexanoate. We prepared ethyl acetate-water-PLEL emulsion and applied this emulsion to biodegradable polymer scaffolds. PLA scaffolds were prepared by an emulsion freeze-drying method. These scaffolds were made by varying water weight fraction. Their surface pore size became larger with increasing water weight fraction. |
| キーワード | Poly(lactic acid) Poly(ethylene glycol) Biodegradable polymer Tissue Engineering Surfactant |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2006-03-15 |
| 巻 | 11巻 |
| 号 | 1号 |
| 開始ページ | 107 |
| 終了ページ | 110 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002314040 |
| JaLCDOI | 10.18926/fest/11444 |
|---|---|
| タイトル（別表記） | Synthesis of Novel Temperature-responsive Polymer Gel of Poly(aspartic acid)s |
| フルテキストURL | 011_103_106.pdf |
| 著者 | 上原 広樹| 谷元 史明| 北村 吉朗| 吉澤 秀和| |
| 抄録 | Recently, thermo-responsive polymer gels have been studied in various research fields such as drug delivery system. One of represetative thermo-responsive polymer gels is poly(N-isopropylacrylamide) gel (PNIPAAm) that has a rapid and reversible volume phase transition. However, PNIPAAm is not biodegradable, resulting in limitation of its use in medical fields. Novel thermo-responsive polymer gel was prepared by closslinking of isopropylamine modified poly(succinimide) (IPA-PSI) (Poly[α,β -(DL-aspartate isopropyl amide)-co-(succinimide)]) with hexamethylenediamine. Because of peptide bonds in backbone, therefore, it is expected to possess biodegradability and biocompatibility. These gels changed their volume in response to change of environment such as temperature, pH and concentration of salt in water. Crosslinkage density and substitution degree of IPA-PSI affected volume phase transition bahavior of the gel. |
| キーワード | Thermo-responsive polymer gel Biodegradable polymer Poly(aspartic acid) Lower Critical Solution Temperature(LCST) Drug delivery system(DDS) |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2006-03-15 |
| 巻 | 11巻 |
| 号 | 1号 |
| 開始ページ | 103 |
| 終了ページ | 106 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313620 |
| JaLCDOI | 10.18926/fest/11440 |
|---|---|
| タイトル（別表記） | Measurement of thermal conductivity in the soils of Shirakami Mountains |
| フルテキストURL | 011_089_092.pdf |
| 著者 | 繁澤 和佳子| 諸泉 利嗣| 佐々木 長市| |
| 抄録 | Thermal conductivity of soils in Shirakami Mountains that was registered on UNESCO's World Natural Heritage in 1993 were measured using a twin transient-state cylindrical-probe method. The typical results were as follows:(1) Thermal conductivity of the soils in Shirakami Mountains increased according to an increase of soil water content, which was the same tendency as the other soils. (2) The thermal conductivity of the soils was about 0.2～0.3 Wm(-1)K(-1) smaller than volcanic ash soils, and it showed the same tendency as leaf mold. |
| キーワード | Shirakami Mountains Thermal conductivity Twin transient-state cylindrical-probe method Volumetric water content |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2006-03-15 |
| 巻 | 11巻 |
| 号 | 1号 |
| 開始ページ | 89 |
| 終了ページ | 92 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313628 |