検索結果 1257 件
| JaLCDOI | 10.18926/fest/11431 |
|---|---|
| フルテキストURL | 011_051_055.pdf |
| 著者 | 西垣 誠| 小松 満| Akudago John Apambilla| Shinshi Yoshihide| Kawakami Kenji| Kumamaru Koji| |
| 抄録 | A laboratory validation of a proposed new method of determining the in-situ effective porosity of unsaturated soils was carried out on unsaturated river sand. The proposed method consists of boring a small diameter hole into the soil and inserting an Amplitude Domain Reflectometry (ADR) probe at the bottom part of the hole. Water is supplied into the hole till saturation and later de-saturated. The water content with time is determined from the ADR probe voltage potential readings. The effective porosity is determined from the difference between the saturated and de-saturated water contents. However, in the laboratory, the water is supplied through the top and bottom parts of the sample. From the experiments the obtained effective porosity ranged from 0.28 to 0.29 for wetting from the top with an average of 0.287 and 0.29 to 0.30 for wetting from the bottom with an average of 0.293. The determined effective porosity ranged from 71.7-73.3% of the real initial porosity of 0.40 of the river sand. The maximum attained degree of saturation during the experiment was 91%. The results indicated that the method will be suitable and useful in determining the effective porosity of medium grained unsaturated soils. |
| キーワード | Underground dam Effective porosity Storage capacity Freshwater development |
| 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 | 51 |
| 終了ページ | 55 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313335 |
| タイトル（別表記） | Measurements of Response of Barley and Wheat to Enviromental Factors with an Open System Porometer |
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| フルテキストURL | 005_001_011_021.pdf |
| 著者 | 米谷 俊彦| 柏木 良明| |
| 抄録 | The rates of photosynthesis and transpiration were measured in barley and wheat under various environmental conditions, with an open system porometer. The rates of photosynthesis and transpiration in the horizontal leaf and vertical leaf had different diurnal variations. The rate of photosynthesis in the vertical leaf was highest in the morning and in the afternoon, while that in the horizontal leaf was highest before noon. The rates of photosynthesis and transpiration and chlorophyll contents were measured for two species(c.v SARI and Akanmugi) of barley grown in submerged soil conditions. At the end of April, chlorophyll contents had decreased and the maintenance respiration acquired in spite of continuous transpiration. The rapid change of photosynthetically active radiation did not affect the rates of photosynthesis or stomatal conductance of SARI grown in submerged soil. The rates of photosynthesis and transpiration and chlorophyll contents were measured for two species(c.v. Hongmangmai and Haruhikari) of wheat grown under different soil water conditions. Chlorophyll content tended to increase in dry soil conditions. Hongmangmai had a higher chlorophyll content than Haruhikari, even at the beginning of May. Hongmangmai had large photosynthetic rate and small transpiration rates under dry soil conditions. These confirm that Hongmangmai has a prominent drought stress tolerance. The open system porometer and the chlorophyll meter may be very useful for comparing physiological characteristics of the plant's response to environmental factors and clarifying differences between plant species. |
| キーワード | Barley Hongmangmai Photosynthesis rate Chlorophyll content Submerged soil Dry soil |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1997 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 11 |
| 終了ページ | 21 |
| ISSN | 0916-930X |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | QTL Mapping for Water Sensitivity in Barley Seeds |
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| フルテキストURL | 006_001_021_028.pdf |
| 著者 | 岩佐 友彦| 高橋 秀和| 武田 和義| |
| 抄録 | Sensitivity to water condition during germination is an important character in malting barley because it affects malt poduction. Water sensitivity in malting barley is defined as the defference in germination percentage between the seeds in standard and excess-water conditions. Usually standard and excess-water condition means 4 and 8 ml water in a 90 mm perti dish, respectively. Takeda and Fukuyama (1983) examined more than 4,000 barley accessions and found 0～100% water sensitivity. This means complete to no suppression of germination by an excess-water condition. In this study, quantiative trait loci (QTL) analysis was applied to analize the inheritance of water sensitivity. Two sets of doubled haploid (DH) populations derived from Steptoe×Morex (S/M) and Harrington×TR306 (H/T) crosses,were grown in the experiment field of the Research Institute for Bioresources, Okayama University. Bulbosum method was adapted to develop DH lines (Chen and Hayes 1989). Water sensitivities of 150 (S/M) and (H/T) lines and their parents were evaluated using 50 seeds each and the germination test (25℃, 4 days) was repeated four times. Water sensitivity showed a large variation (Fig.1) and the heritability of the trait was 0.78 and 0.72 in S/M and H/T, respectively, indicating that about three-quarters of the phenotypic variance was genetic in origin. Three (S/M) and one (H/T) significant QTL were detected and 23% (S/M) and 25% (H/T) of the phenotypic variance was explained by the QTL. These QTL were located on chromosomes 2H,3H,6H and 7H (Table 1, Fig. 2). QTL relating to germination traits were lacated near the QTL controlling water sensitivity (Fig. 3). Interaction among the QTL was small (Table 2). Marker-assisted selection was effective (Table 3). |
| キーワード | barley water sensitivity QTL analysis |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1999 |
| 巻 | 6巻 |
| 号 | 1号 |
| 開始ページ | 21 |
| 終了ページ | 28 |
| ISSN | 0916-930X |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | Estimation of Turbulent Fluxes by Gradient Method with Surface Temperatures of Rice Plant Canopy |
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| フルテキストURL | 006_001_001_011.pdf |
| 著者 | 宮下 晃一| 米谷 俊彦| |
| 抄録 | Micrometeorological observations including turbulent fluxes and canopy surface temperatures were made in paddy in the summer of 1997. The sensible and latent heat fluxes were estimated by the gradient method under the assumption of similarity between the turbulent exchange coefficient for momentum and that for heat and water vapor. The surface temperatures measured by a thermal imager and water vapor pressures estimated from surface temperatures and relative humidity were used for temperature and water vapor at the height(d+z0) of U=0, where d is the displacement height, z0 the roughness length and U the mean wind velocity. The sensible and latent heat fluxes estimated by the gradient method depicted typical diurnal varietions. The turbulent fluxes by the present method and eddy correlation method showed fairly good agreement, especially for latent heat fluxes. These results confirmed that this method is a promising one. |
| キーワード | Surface temperature Rice plant canopy Thermal imager Turbulent fluxes |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1999 |
| 巻 | 6巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 11 |
| ISSN | 0916-930X |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | Vertical Structure of Temperatures of Tree's Leaves and Gate Wall at Rashomon Doline |
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| フルテキストURL | 005_002_169_181.pdf |
| 著者 | 宮下 晃一| 米谷 俊彦| |
| 抄録 | Temperatures of tree's leaves and gate wall were measured in the summer of 1996 at doline. Diurnal fluctuations of leaf temperatures were greater, the higher the position of leaf in the doline, and they showed maximum temperatures later, the deeper the leaf position. The leaf temperature of trees growing in the first collapse doline was uniform in the horizontal direction and had a stable thermal layer. The difference between leaf temperatures at a depth of 20 m and 11 m was about 12℃ around noon. The leaf temperature was always higher at the upper part than at the lower part of the doline throughout the day. Daily fluctuation of wall temperature was small,compared with that of leaf temperature. The vertical profile of wall temperature was similar to that of leaf temperature. The warm water flowing down from the upper part of the doline influenced the soil temperature in the lower part of the doline. The thermal imagery elucidated the peculiar vertical structure of leaf and wall temperature formed in the summer at Rashomon doline. |
| キーワード | Rashomon Doline Leaf temperature Wall temperature Thermal image |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1998 |
| 巻 | 5巻 |
| 号 | 2号 |
| 開始ページ | 169 |
| 終了ページ | 181 |
| ISSN | 0916-930X |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | メダカハネカクシの尾部分分泌物 |
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| フルテキストURL | 004_001_025_031.pdf |
| 著者 | 兼久 勝夫| 積木 久明| |
| 抄録 | Rove beetles have a pair of pygidial excretory organs, each group secretes characteristic substances in a peculiar manner. The genus Stenus has a pair of pygidial organs, eversible by immersion in diethyl-ether at both sides of the anus. S. anthoracinus, S. melanarius vercecundus and S. rufescens were collected at ponds and river shores, and S. alienus was collected at tobacco and vegetable fields. Excretory substances were secreted in the diethylether, and identified by gas chromatography and mass spectrometry. Stenusin [N-Ethyl-3-(2-methylbutyl) piperidine], 1,8-cineole, isopiperitenol and 6-Me-5-hepten-2-one were identified. These may probably act as defensive substances against small attacking animals and microorganisms, and act as water suface moving active agents. |
| キーワード | Rove beetles Stenus Excretory secretion Pygidial organ Defensive secretion |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1996 |
| 巻 | 4巻 |
| 号 | 1号 |
| 開始ページ | 25 |
| 終了ページ | 31 |
| ISSN | 0916-930X |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | Promotion of Drying of Leaves Detached from Plants after Rainfall Exposure |
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| フルテキストURL | 002_002_191_200.pdf |
| 著者 | 木村 和義| |
| 抄録 | The drying of leaves detached from 16 plants (mainly, vegetalbles) after artificial rainfall (mist)treatment was examined in a growth chamber(20℃,8 klux). Leaves detached from misted plants had a higher drying rate than those detached from non-misted plants. The promoting effect of mist on the dryint rate was increased with the increase in the duration of mist exposure. The degree of drying after mist exposure for 3 days or more was increased markedly. In almost all the plants,the weight of the leaves detached from the plants decreased to 10-20% of the initial weight 24 hours after a 5-day mist treatment, but 40-50% in cabbadge, chinese leek and welsh onion. In general, the degree of drying was greater in the young developing leaves or older leaves than in active young leaves. These findings suggested that the surface wax and cuticular of the leaf is injured by rainfall wetting, and that water discharge(transpitation) in the leaf is increased greatly. |
| キーワード | Rainfall Leaf Drying Vegetables |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1994 |
| 巻 | 2巻 |
| 号 | 2号 |
| 開始ページ | 191 |
| 終了ページ | 200 |
| ISSN | 0916-930X |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | Absorption of Iron by MuSty-Odor Producing Cyanobacteria (Anabaena macrospora, Phormidium tenue, Oscillatoria tenuis and Oscillatoria brevis) |
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| フルテキストURL | 001_001_035_050.pdf |
| 著者 | 中島 進| 青山 勲| 八木 正一| |
| 抄録 | 近年、琵琶湖の南湖をはじめ、霞々浦や相模湖など多くの湖沼や水道水源地において、人間活動に付随すると富栄養化問題となり、ラン藻類、特にかび臭物質を産生するラン藻の発生が憂慮されている。琵琶湖を水源とする大津、京都、大阪、神戸など関西の各都市の水道では、同湖で毎年発生するラン藻、すなわちAnabaena macrospora｛ジオスミン（geosmin）を産生｝やPhormidium tenue, Oscillatoria tenuis｛2-メチルイソボルネオール（2-methylisoborneol, MIB）を産生｝などが作り出すこれらのかび臭物質（ジオスミンまたはMIB）による水道水の異臭味が大きな問題となっている。こうした水圏環境における異臭味は世界各地でも問題となり、近年この問題に関する国際シンポジウム（International Symposium on Off-Flavors in the Aquatic Environment）が開かれるようになり、1982年6月には第1回（ヘルシンキ）、1987年10月には第2回（鹿児島）、そして1991年3月には第3回（ロサンゼルス）のシンポジウムがそれぞれ開催された。しかしこうしたラン藻が異常増殖する要因はまだ明らかではない。そのためかび臭物質を産生するラン藻類の発生を予測あるいは抑制する情報に関する研究は強い要請があるにもかかわらずあまり進展をみていない。 |
| 出版物タイトル | 岡山大学資源生物科学研究所報告 |
| 発行日 | 1992 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 35 |
| 終了ページ | 50 |
| ISSN | 0916-930X |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| 著者 | 稲葉 英男| 武谷 健吾| |
|---|---|
| 発行日 | 1994-10-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 60巻 |
| 号 | 578号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 森田 慎一| |
|---|---|
| 発行日 | 1994-04-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 60巻 |
| 号 | 572号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 武谷 健吾| |
|---|---|
| 発行日 | 1994-12-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 60巻 |
| 号 | 580号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 尾崎 公一| 金岡 伸一| |
|---|---|
| 発行日 | 1994-03-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 60巻 |
| 号 | 571号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 佐藤 憲二| |
|---|---|
| 発行日 | 1994-12-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 60巻 |
| 号 | 580号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 尾崎 公一| 金岡 伸一| |
|---|---|
| 発行日 | 1994-01-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 60巻 |
| 号 | 569号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 森田 慎一| |
|---|---|
| 発行日 | 1995-03-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 61巻 |
| 号 | 583号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 大竹 秀雄| |
|---|---|
| 発行日 | 1993-11-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 59巻 |
| 号 | 567号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 今井 誠士| |
|---|---|
| 発行日 | 1995-05-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 61巻 |
| 号 | 585号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 大竹 秀雄| 茂森 昭博| |
|---|---|
| 発行日 | 1993-11-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 59巻 |
| 号 | 567号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 武谷 健吾| |
|---|---|
| 発行日 | 1993-11-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 59巻 |
| 号 | 567号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 稲葉 英男| 今井 誠士| |
|---|---|
| 発行日 | 1995-06-25 |
| 出版物タイトル | 日本機械学會論文集 B編 |
| 巻 | 61巻 |
| 号 | 586号 |
| 資料タイプ | 学術雑誌論文 |