検索結果 1266 件
| JaLCDOI | 10.18926/11759 |
|---|---|
| タイトル（別表記） | 長期ホルマリン固定により失活したProliferating Cell Nuclear Antigen (PCNA) の免疫反応性回復条件の基礎的検討 ―マイクロウェーブ、オートクレーブの影響について― |
| フルテキストURL | 007_1_009_015.pdf |
| 著者 | 崎山 順子| 一村 光子| 唐下 博子| 遠藤 浩| 川上 香利| 河谷 友紀| |
| 抄録 | Using paraffin-embedded tissue sections of liver cancer obtained from autopsy which had been preserved in 10% buffered formalin solution for 6 months while PCNA immunoreactivity was lost, we examined the effects of heat processing by either microwave(MW) and autoclave(AC) in the presence of various processing solution. It appeared that AC processing took shorter time period than MW irradiation to restore equal immunoreactivity. With regard to immunoreactivity retrieval by MW irradiation,however, variation of the degree of retrieval depending on processing time was smaller than in AC, and so the stable consequences were obtained. Although AC processed tissues tended to be stained deep, prolonged processing time presented strong background staining and blurred nuclear margins which made it difficult to estimate the positive cell count. As for the effects of processing solution, there was little difference in retrieval of PCNA among 0.01 M citrate buffer (pH 6.0), saturated solution of lead thiocyanate and distilled water, but the least background staining was observed with distilled water. These observations suggest that MW irradiation of which effect of retrieval is less dependent of processing time and with the least background stainability, is superior to AC processing for PCNA immunoreactivity retrieval on formalin-fixed tissues. |
| キーワード | PCNA microwave (マイクロウェーブ) autoclave (オートクレーブ) immunohistological staining (免疫組織染色) formalin fixation (ホルマリン固定) |
| 出版物タイトル | 岡山大学医療技術短期大学部紀要 |
| 発行日 | 1996-09-30 |
| 巻 | 7巻 |
| 号 | 1号 |
| 開始ページ | 9 |
| 終了ページ | 15 |
| ISSN | 0917-4494 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313519 |
| JaLCDOI | 10.18926/11708 |
|---|---|
| タイトル（別表記） | Re-evaluation of spa-drink therapy for digestive diseases |
| フルテキストURL | 061_073_078.pdf |
| 著者 | 田中 淳太郎| 妹尾 敏伸| 松本 秀次| 越智 浩二| 原田 英雄| |
| 抄録 | 従来飲泉などの温泉治療は経験的知識にもとづいて行われる部分が多かったが，今後は科学的検査法を用いて有用性，適応疾患，適応病態，などを決定する必要がある。筆者らは，最近紹介された簡便な消化器検査法を用いて消化器疾患に対する飲泉療法の適応を再吟味しているので，これまでに得られた成績を中心に概説した。すなわち，(1)飲泉は1回でも連日の飲用でも，胃粘膜血流を改善する作用がある。(2)胃排出機能に対しては調整的効果を有する。(3)連日の飲泉は膵外分泌機能を改善する。したがって慢性の胃，膵疾患において粘膜血流障害，胃運動機能異常あるいは膵外分泌機能低下に起因する病気・病態に対しては積極的に飲泉療法を試みるべきである。温泉水の温度は40℃前後，飲泉の量は150～200ml，タイミングは食間空腹時がよい。 |
| キーワード | 飲泉療法 (Spa-drink therapy) 消化器機能 (Digestive function) 胃粘膜血流 胃排出能 膵外分泌 胆嚢機能 |
| 出版物タイトル | 環境病態研報告 |
| 発行日 | 1990-09 |
| 巻 | 61巻 |
| 開始ページ | 73 |
| 終了ページ | 78 |
| ISSN | 0913-3771 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313368 |
| JaLCDOI | 10.18926/11694 |
|---|---|
| タイトル（別表記） | 低線量放射線による抗酸化系の誘導と活性酸素病治療への応用の可能性 |
| フルテキストURL | 011_1_001_015.pdf |
| 著者 | 山岡 聖典| |
| 抄録 | We clarified that adequate oxygen stress induced by low dose radiation activates not only chemical biological protective function, such as induction of the synthesis of SOD, GPX and HSP70, but also the biomembrane function, such as enhanced membrane fluidity and ATPase activity. It is possible that activation of these mechanisms alleviates in vivo oxidation injuries resulting in alleviation of pathologic condition, such as symptoms of hepatopathy and diabetes mellitus. Namely, adequate activation of the functions of the living body by low dose radiation can contribute to suppressing aging and to preventing or reducing active oxygen species related diseases which are thought to involve peroxidation and have been regarded as the diseases for which radon spring water is an effective treatment. Clarification in detail of the mechanisms of these phenomena is required to understand the effects of low dose radiation on the functions of the living body, including adaptive response. |
| キーワード | antioxidant system (抗酸化系) low dose radiation (低線量放射線) radon inhalation (ラドン) active oxygen species related diseases (活性酸素病) adaptive response (適応応答 ) |
| 出版物タイトル | 岡山大学医学部保健学科紀要 |
| 発行日 | 2000-11-16 |
| 巻 | 11巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 15 |
| ISSN | 1345-0948 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002314000 |
| JaLCDOI | 10.18926/11685 |
|---|---|
| タイトル（別表記） | 日本に於ける二酸化炭素泉療法の現況 |
| フルテキストURL | 061_068_072.pdf |
| 著者 | 古元 嘉昭| 曽田 益弘| 平井 俊一| 森末 真八| 鈴鹿 伊智雄| 萬 秀憲| |
| 抄録 | Natural CO(2) springs have been scarcely utilized in Japan, whereas artificial CO(2) bathing has become popular by the introduction of CO(2) tablets and other apparatus for CO(2) water supply. Artificial CO(2) bathing is indicated for degenerative connective tissue disorders such as scleroderma, common stiff and painful shoulders, chronic joint pain, lumbago, and trophic changes due to insufficient peripheral circulation by virtue of the increase of tissue pO(2) and the improvement of tissue perfusion. Artificial CO(2) bathing promotes recovery from fatigue and is beneficial in women whose health has been adversely affected by cold. |
| キーワード | CO(2) -balneotherapy Artificial CO(2) -bathing Tissue pO(2) |
| 出版物タイトル | 環境病態研報告 |
| 発行日 | 1990-09 |
| 巻 | 61巻 |
| 開始ページ | 68 |
| 終了ページ | 72 |
| ISSN | 0913-3771 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313982 |
| JaLCDOI | 10.18926/fest/11636 |
|---|---|
| フルテキストURL | 001_181_192.pdf |
| 著者 | 藤井 弘章| 成田 睦也| Cheng Chin Thai| 島田 清| 西村 伸一| Ofori Emanual| |
| 抄録 | This paper describes the prediction of seepage in the impervious zones of six embankment dams by seepage analysis. In addition, by making use of the available monitored pore water pressure data of the first filling of reservoir, back analysis was carried out to estimate the best fit seepage parameters. The estimated parameters were used for further prediction of pore water pressures in subsequent monitored durations with reasonable accuracy. The accuracy of prediction was evaluated quantitatively by the prediction difference and error index. The results show that the error indices in the upstream sides of the impervious zones are smaller than those in the downstream sides. |
| キーワード | Unsaturated soils fill dams pore water pressure back analysis FEM |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 181 |
| 終了ページ | 192 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313591 |
| JaLCDOI | 10.18926/fest/11635 |
|---|---|
| フルテキストURL | 001_169_179.pdf |
| 著者 | Abenney-Mickson Stephen| 三浦 健志| |
| 抄録 | The SWAP93 model was used to predict how much capillary rise would occur in cropped fields. The experimental fields were located in a humid climate and it was thought that contribution from groundwater sources to total water use could be significant. In one field planted with soybean, the model predicted an average daily uptake of 1.3 mm; in another field planted with pumpkin, there was average daily uptake of 0.3 mm; and yet in a third field located in a vinyl house there was average daily uptake of 0.03 mm. These predictions represent about 38,7 and 1% contribution to total water use respectively. Even though there were no measured data to compare with, the results lie within the range of other works reported in the literature. |
| キーワード | Crop water use capillary rise SWAP93 model groundwater |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 169 |
| 終了ページ | 179 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313364 |
| JaLCDOI | 10.18926/fest/11630 |
|---|---|
| タイトル（別表記） | Process of Acid Sulfate Soil Formation from the Viewpoint of Moisture Conditions on Coastal Muddy Soil and a trial of it's Amelioration |
| フルテキストURL | 001_135_141.pdf |
| 著者 | 足立 忠司| |
| 抄録 | According to recent soil survey data, it has been reported that acid sulfate soils cover areas of about 11,670,000 hectares all over the world and about 40% of those are in South-East Asia. Most of crops could not be grown on those areas without any amelioration due to low soil pH. This report consists of two parts. One is on acid sulfate soil formation in laboratory experiment. Another is on a trial of acid sulfate soil amelioration in field experiment. The results obtained on acid sulfate soil formation, in order to make clear the relationships between the process of oxidation of sulfur compounds and the moisture conditions (moisture suction) in coastal muddy soils, in laboratory experiment are summarized as follows; The concentration of sulfuric ions increase as oxidation of sulfur compounds contained in pyrite, etc. occurs, and as a consequence, the soil pH decreases in the coastal muddy soil (Fig.1). Especially, the soil pH decreased remarkably in the range of pF 2.3~3.4. The activity of soil microorganism takes part in this reaction by helping out with bringing about sulfur oxidation and formation of sulfuric ions. The pH decrease in the soil with autoclaved treatment was only slight at pF values lower than pF 3.0. Accordingly, it is concluded that the decrease of pH in coastal muddy soil occurred mainly due to soil microorganisms which oxidize sulfur compounds under the condition of higher-water than pF 3.0. The results of field experiment is summarized as follows; As a general rule, it is able to remedy the surface acidification of peat/acid sulfate soils by mixing lime dust with plough layer. However, the effect of mixed lime dust is easily disappeared in the area where the acidic ground water table is always high and moves up over the surface in rainy season. Therefore, it was carried out that several experiments for seeking protection against surface acidification due to capillary upward movement of acidic ground water by means of inserting a buffering layer of lime gravel (thickness of lime gravel layer =5㎝) between the top soil and the acidic subsoil (20 ㎝ depth) in the fields, Munoh series which is young acid sulfate soil, at the Narathiwat Land Development Center in South Thailand. The results of soil pH measurement carried out in the field in November of 1985, August of 1987 and September of 1990, it coincides with 2,4 and 7 years respectively after the beginning of the experiments, are shown in Table 3. In the plot of P2 and U1, application of lime dust to the plough layer can increase soil pH rapidly but it's residual effect is not so long. Within a 5 year period, the soil pH is likely to return to below 4. On the other hand, an underlaid lime gravel layer tends to improve the soil around the lime gravel only slight but steadily with time. Therefore, it is concluded that surface soil acidification caused by the upward movement of acidified ground water would be protected against, rapidly and continuously, by both mixing lime dust with plough layer and underlying lime gravel below plough layer. If acid sulfate soil areas would be used as upland fields, much of organic matters in soil are easily decomposed by drying. Therefore, it is suggested that it would be better for these areas to be used as paddy fields, also from the above results. |
| キーワード | Acid sulfate soil Soil microorganisms Moisture conditions Amelioration pH Sustainable effect |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 135 |
| 終了ページ | 141 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313380 |
| JaLCDOI | 10.18926/fest/11626 |
|---|---|
| フルテキストURL | 001_151_162.pdf |
| 著者 | Ndegwa George Maina| 四方田 穆| |
| 抄録 | Actual irrigation situation in a typical upland irrigation district was estimated by the water balance method during the 1993 rainy and the 1994 dry year periods. Soil moisture conditions were analysed for cases where daily district water use was supplied to all the cropped upland farms, and to reduced irrigation area percentages. Consumptive use was obtained through monthly weighted crop coefficients used to reduce penman's potential evapotranspiration. The moisture budget was examined at three levels of total readily available moisture, TRAM, i.e., 20,30 and 40 mm; the effect of upward capillary rise was also considered. The results of this study indicated that the actual moisture conditions in upland irrigated farms is influenced by irrigation area, cropping pattern, stage of crop growth and upward capillary rise in the farms. Actual irrigated area was within the range of about 44 to 100% of cropped area while upward capillary rise was between 0.1 and 1 mm day-1, TRAM level of 30 to 40 mm was considered most appropriate for the district. Monthly effective rainfall percentages from the water balance method were fairly close to that determined by the basic irrigation requirement method for some months. Basic irrigation requirement may therefore be considered to incorporate capillary water contribution. |
| キーワード | Upland irrigation TRAM Water balance Capillary water Effective rainfall |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 151 |
| 終了ページ | 162 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313861 |
| JaLCDOI | 10.18926/fest/11623 |
|---|---|
| タイトル（別表記） | Rain-water Retention of a Small-scale Upland Field in a Rainy Year and a Droughty Year |
| フルテキストURL | 001_143_149.pdf |
| 著者 | 四方田 穆| |
| 抄録 | From the standpoint of water resources development and environmental preservation, rain water retentivity of agricultural and forest lands are evaluated. Measurement of rainfall and runoff has been carried out at the reclaimed upland field of 4.55 ha since 1981. In this article, water retention characteristics of this study basin is compared in a rainy year of 1993 and a droughty year of 1994. In cases of rainfall less than 20mm, most of the rain water infiltrates into the soil layer. On the other hand, about 75% of a heavy rain, such as 300 mm in 1993, runs off the soil surface. Within the infiltrating rain water, the ratio of water which is kept by capillary action and can be used by crops is estimated to be less than 40% in months of rainfall more than 150 mm, but in months of rainfall less than 50 mm, it is estimated that more than 80% of rainfall can be used by crops. The ratio of monthly rainfall which contributes to base flow recharge is 0 to 12% regardless of rainfall amount. |
| キーワード | upland field monthly rainfall rain water retention effective rainfall base flow recharge |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 143 |
| 終了ページ | 149 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313677 |
| JaLCDOI | 10.18926/fest/11622 |
|---|---|
| フルテキストURL | 001_121_133.pdf |
| 著者 | 前野 詩朗| 山本 哲雄| 名合 宏之| |
| 抄録 | In this paper the theoretical procedure to analyze the dynamic behavior of highly saturated sand bed around a cylindrical block under the cyclic loading of water pressure is developed. The fundamental equations were derived for the axially symmetric coordinates. Then, the finite element equations were developed to solve these fundamental equations numerically. Finally, the numerical method was verified by experiments. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 121 |
| 終了ページ | 133 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313416 |
| JaLCDOI | 10.18926/fest/11616 |
|---|---|
| タイトル（別表記） | Corrosion Behavior of Silica Glass in High-Pressure Water Vapor at 300℃ |
| フルテキストURL | 002_131_135.pdf |
| 著者 | 小田 耕平| 高田 勝美| 吉尾 哲夫| |
| 抄録 | Corrosion behavior of silica glass was investigated in high-pressure water vapor and water at 300℃. A linear weight loss in water vapor and a parabolic weight loss in water were observed. The weight loss for the former was larger than that for the later. The fracture strength of the corroded silica glass increased with the content of molecular water in the glass. The strength reduction was observed for the corroded silica glass after dehydration at 400℃ for 1 day. |
| キーワード | Autoclave FT-IR Fracture strength Hydrothermal treatment Dehydration |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1997-01-10 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 131 |
| 終了ページ | 135 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002314038 |
| JaLCDOI | 10.18926/fest/11610 |
|---|---|
| フルテキストURL | 001_047_053.pdf |
| 著者 | 佐々木 徹| 石川 洋文| 梶原 毅| 渡辺 雅二| |
| 抄録 | We treat the problem of water pollution by the method of a mathematical model. We illustrate the method of analysis with Kojima Lake. We analyze in-flow and out-flow of the lake, compute numerical solutions of the governing equations of the water flow and the pollutant. The simulation leads to the conclusion concerning the figure of Kojima Lake. |
| キーワード | Kojima lake Water analysis Finite element 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 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 47 |
| 終了ページ | 53 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313787 |
| JaLCDOI | 10.18926/fest/11599 |
|---|---|
| フルテキストURL | 002_051_058.pdf |
| 著者 | 岸田 巧| 渡辺 桂一郎| 大滝 英治| |
| 抄録 | The Measuring instrument of carbon dioxide concentration in seawater (pCO(2)) is developed. The instrument consists of an equilibrator, a non-dispersive infrared gas analyzer (NDIR), a carrier gas generator and a processing signal generator. The equilibrator has a cross section of 3 c㎡ and is 15 cm tall. The principle of pCO(2) measurement is based on the equilibration of a carrier gas phase with a seawater sample and subsequent determination of the carbon dioxide concentration in the carrier gas. The carrier gas circuit of the NDIR is opened to the atmosphere to maintain the carrier gas line at a barometric pressure. The present instrument can measure pCO(2) within the measuring error of about 2 ppm with sample water of about 180ml every 20 min. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1997-01-10 |
| 巻 | 2巻 |
| 号 | 1号 |
| 開始ページ | 51 |
| 終了ページ | 58 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313348 |
| JaLCDOI | 10.18926/fest/11577 |
|---|---|
| フルテキストURL | 005_107_112.pdf |
| 著者 | Tohari Adrin| 西垣 誠| 小松 満| |
| 抄録 | Failures of railway embankments in Japan usually occur during rainfall period due to the rise of water level in the embankments. Laboratory experiments were carried out to elucidate the initiation of failure of embankment under the rise of water level. The changes in pore-water pressure were monitored during the rise of water table and at the initiation of failures. The experiment results showed that main failure of embankment was initiated by development of localized unstable area at the toe of the embankment models during the rise of water level. This indicates that failure of embankments was a consequence of instability of the toe of the slope induced by saturation process under drained condition. |
| キーワード | embankment failure process seepage face toe failure overall instability |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 107 |
| 終了ページ | 112 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313411 |
| JaLCDOI | 10.18926/fest/11572 |
|---|---|
| タイトル（別表記） | Comparison of micrometeorological environments inside and outside a watermelon plastic greenhouse |
| フルテキストURL | 003_121_126.pdf |
| 著者 | 森田 昇| 三浦 健志| |
| 抄録 | The use of glass and plastic greenhouses have rapidly increased in recent years. Meteorological 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 evapotranspiraton inside a greenhouse which play impotrant roles in the design of any irrigation system. This study aims to estimate the micrometeorological conditions inside a watermelon plastic 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 about 70% of that of outside it. (2) Net radiation during the daytime inside the greenhouse was almost the same as the absorbed total short-wave radiation. (3) The difference of air temperature inside and outside the greenhouse was very large during the daytime whereas not much difference was observed during the nighttime. (4) Both relative humidity and saturation deficit inside the greenhouse were higher than outside in case of highly vegetative land. (5) Wind speed inside the greenhouse was almost zero, while outside the average value was 1.8m/s. |
| キーワード | plastic greenhouse micrometeorology watermelon |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1998-01-14 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 121 |
| 終了ページ | 126 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313884 |
| JaLCDOI | 10.18926/fest/11571 |
|---|---|
| フルテキストURL | 005_081_098.pdf |
| 著者 | Magda Waldemar| 前野 詩朗| 名合 宏之| |
| 抄録 | A dynamic response of a submarine pipeline buried in sandy seabed sediments to water loading generated by harmonically oscillating water-table vertical movements is examined in the present report experimentally and numerically. The aim of small-scale laboratory experiments was: (1) to record time-histories of pipeline vertical displacements, and (2) to observe a shape of slip surface of an overburden sand body involved in breakout together with the pipeline. A parametric study was carried out in order to investigate the influence of two meaningful factors, that is the depth of burial and the specific gravity of pipeline, on a gradual upward displacement of the pipeline. Based on a numerical finite-element 2D-analysis of the hydrodynamic pore pressure and effective stresses oscillations in the pipeline vicinity, an analysis of the pipeline stability potential is presented, in which all the experimental cases tested are verified. All important component forces (e.g., hydrodynamic uplift force) associated with floatation phenomenon of the buried submarine pipeline are considered and quantified. |
| キーワード | submarine pipeline surface waves pore pressure floatation stability |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 81 |
| 終了ページ | 98 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313700 |
| JaLCDOI | 10.18926/fest/11570 |
|---|---|
| フルテキストURL | 003_105_120.pdf |
| 著者 | Kidtimonton Surasri| 三野 徹| |
| 抄録 | Two optimization models are formulated based on different objectives for assisting the irrigation planner in making decision on agricultural planning during drought year. The sensitive degree of water shortage area in the irrigation project are classified by those models. They are solved by simplex method. Firstly, the Two-phase method is applied to analyze the artificial variables in the formulated model. Then, the formulated model is modified after getting rid of the artificial variables to obtain the feasible solution. The agricultural planning is planned by considering the classified area with social equity and economic improvement. Crop diversification is introduced to conduct in the very sensitive water shortage area and intermittent irrigation system is introduced to operate in the moderately sensitive water shortage area. The integrated farming system, the separation of land owner and cultivator and the disposition of substitute lots system are also suggested to conduct in this study project. |
| キーワード | agricultural planning Two-phase method integrated farming sensitive water shortage disposition of substitute lots system |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1998-01-14 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 105 |
| 終了ページ | 120 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313819 |
| JaLCDOI | 10.18926/fest/11567 |
|---|---|
| フルテキストURL | 003_075_095.pdf |
| 著者 | Magda Waldemar| 前野 詩朗| 名合 宏之| |
| 抄録 | The response on sandy seabed sediments to a harmonically oscillating water-table, with a special consideration of the wave-induced pore-pressure oscillations around a pipeline buried in seabed sediments, is studied in the present work experimentally and numerically. The aim of the analysis was: (1) to observe a true distribution pattern of the wave-induced pore-pressure oscillations acting on the pipeline outer surface, and (2) to verify small-scale test results using numerical computations performed for a wide range of saturation conditions of seabed sediments, under the assumption of a compressible two-phase medium compound of the pore-fluid and soil skeleton, as well as a finite thickness of a permeable seabed layer. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1998-01-14 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 75 |
| 終了ページ | 95 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313821 |
| JaLCDOI | 10.18926/fest/11559 |
|---|---|
| フルテキストURL | 005_031_034.pdf |
| 著者 | 渡辺 雅二| |
| 抄録 | We study unsteady flow that models lake flow in Kojima Lake. We assume that a lake is connected to another area with gates, and that those gates are opened when the water level outside the gates is lower than the water level of the lake. We study unsteady flow due to the opening of the gates. We analyze the problem with the finite element method, and take detailed structures of the gates into account. |
| キーワード | unsteady flow lake flow finite element 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 | 2000-02-29 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 31 |
| 終了ページ | 34 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313848 |
| JaLCDOI | 10.18926/fest/11543 |
|---|---|
| タイトル（別表記） | Fertilizer Microencapsulated with Biodegradable Polymer |
| フルテキストURL | 007_127_131.pdf |
| 著者 | 二木 栄| 吉澤 秀和| 松尾 充記| 楠本 昌彦| 北村 吉朗| |
| 抄録 | Many fertilizers are soluble in water, therefore their effect does not last for long time after fertilizing in soils. The nitrogenous fertilizers such as urea transported to groundwater cause serious agricultural contamination and health problems. To solve these problems, sustained release of fertilizer has attracted much attention. In this study, we attempted to prepare polylactide microcapsules with fertilizer by phase separation technique, which was a method of microencapsulation. Polylactide (PLA) was used as a biodegradable polymer bacause the biodegradable polymer has no influence on the soil and the ecosystem. The effect of preparation conditions such as stirring time and fertilizer concentration on morphology of microcapsule and on cumulative percentage released of enclosed urea was also investigated. |
| キーワード | fertilizer polylactide microcapsule controlled release 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 | 2002-03-22 |
| 巻 | 7巻 |
| 号 | 1号 |
| 開始ページ | 127 |
| 終了ページ | 131 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313894 |