result 13642 件
| JaLCDOI | 10.18926/15129 |
|---|---|
| FullText URL | 066_085_091.pdf |
| Author | Chowdhury Riaz| Ochi, Koji| Harada, Hideo| Tanaka, Juntaro| Mizushima, Takaaki| Matsumoto, Shuji| Seno, Toshinobu| Ichimura, Mitsuko| Akiyama, Tsuneo| Yokota, Satoshi| |
| Abstract | Experimental model of pancreatitis is mandatory for elucidating the pathobiology of the disease and also to see the response of a novel treatment. In addition, the need for an animal model of chronic pancreatitis is further strengthened by the relative inaccessibility and paucity of the human pancreatitis tissue. Whereas various models of acute pancreatitis and also of exocrine pancreatic tumor have been described, chronic pancr-eatitis has not been consistently reproduced in experimental animals. Many researchers attempted to establish an experimental model of chronic pancreatitis either by partially obstructing the drainage of pancreatic secretion in dogs and cats or by feeding alcohol to dogs and rats with and without temporary occlusion of the biliopancreatic duct or by surgically inducing ischaemia in the pancreas of the dogs. But, none of these models is identical with human disease. A consistently reproducible model of human chronic pancr-eatitis probably does not exist. In this expanding era of molecular biology which promises us to enhance greatly our understanding of this disease, a right experimental model of chronic pancreatitis is still in progress. |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1995-09 |
| Volume | volume66 |
| Start Page | 85 |
| End Page | 91 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307190 |
| JaLCDOI | 10.18926/15121 |
|---|---|
| Title Alternative | 気管支喘息患者の血清コーチゾール値について. 副腎皮質ホルモン投与および年齢との関連 |
| FullText URL | 066_030_036.pdf |
| Author | Hosaki, Yasuhiro| Mifune, Takashi| Mitsunobu, Fumihiro| Kajimoto, Kazuhiro| Yokota, Satoshi| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| Ikeda, Satoru| Taketa, Kazuhisa| |
| Abstract | Serum cortisol levels were examined in 94 patients with bronchial asthma in relation to dose of glucocorticoids and age. 1. The level of serum cortisol was significantly lower in group A patients, treated with glucocorticoids (prednisolone of 5mg/day or more) for more than 2 years, (2.4±1.2mcg/㎗) than in group B, treated with glucocorticoids (prednisolone of 5mg or less) for less than 2 years, (6.8±3.7mcg/㎗) (p<0.001) and in group C, treated without glucocorticoids, (12.6±3.9mcg/㎗) (p<0.001). The serum cortisol level was also significantly lower in group B than in group C (p<0.001). 2. The level of serum cortisol was significantly lower in patients over the age of 70 compared to that in those aged between 0 and 39 years (p<0.01) and those between 40 and 49 (p<0.05), and those between 50 and 59 (p<0.02). The level was also lower in patients between 60 and 69 compared to that in those between 0 and 39, however, this was not significant. These results demonstrate that the level of serum cortisol decreases by long-term glucocorticoid regimen and with aging. |
| Keywords | serum cortisol level (血清コーチゾール) bronchial asthma (気管支喘息) clinical asthma type (臨床病型) glucocorticoids (副腎皮質ホルモン) aging (加齢) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1995-09 |
| Volume | volume66 |
| Start Page | 30 |
| End Page | 36 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307345 |
| JaLCDOI | 10.18926/15120 |
|---|---|
| Title Alternative | 老年者気管支喘息の各臨床病型における換気機能の特徴 |
| FullText URL | 066_021_029.pdf |
| Author | Hosaki, Yasuhiro| Mifune, Takashi| Mitsunobu, Fumihiro| Kajimoto, Kazuhiro| Yokota, Satoshi| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| Ikeda, Satoru| Taketa, Kazuhisa| |
| Abstract | Ventilatory function was examined in 55 patients with asthma (25 older patients over the age of 60 and 30 younger patients under the age of 59) in relation to four clinical types classified by clinical symptoms and signs. 1. Regarding cellular composition of bronchoalveolar lavage (BAL) fluid, number of BAL neutrophils was significantly increased in type II, bronchiolar obstruction type, of older and younger patients compared to that in type la-1 and type la-2 of same patients. In contrast, BAL eosinophilia was observed in type la-2 of both older and younger patients and in type Ib of younger patients. 2. The values of % FVC, FEV(1.0%) and % PEFR were not significantly different among four clinical types of asthma and between older and younger patients, although the values of these ventilatory parameters in type II asthma showed a tendency to be lower compared to other clinical types. 3. The values of % MMF, % V(50), and % V(25), showing ventilatory dysfunction of small airways, were lowest in type II asthma of both older and younger patients among four clinical types. A significant difference in these ventilatory parameters of type II asthma compared to type la-1 asthma was observed in younger patients, but not in older patients. These results show that ventilatory dysfunction of small airways is related to clinical asthma types in younger patients, and to aging rather than asthma types in older patients. |
| Keywords | Ventilatory function (換気機能) Clinical asthma type (臨床病型) BAL cells (BAL細胞) aging (加齢) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1995-09 |
| Volume | volume66 |
| Start Page | 21 |
| End Page | 29 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002308008 |
| JaLCDOI | 10.18926/15119 |
|---|---|
| Title Alternative | 気管支喘息患者の気管支肺胞細胞からのヒスタミンとロイコトリエンC4遊離 ―アトピー性喘息におけるヒスタミンの役割について― |
| FullText URL | 066_014_020.pdf |
| Author | Mitsunobu, Fumihiro| Mifune, Takashi| Kajimoto, Kazuhiro| Hosaki, Yasuhiro| Yokota, Satoshi| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| |
| Abstract | To clarify the main humoral triggering factor (histamine and/or leukotriene) of the early stage of asthma attacks, the release of histamine and leukotriene C4 (LTC4) from bronchoalveolar lavage (BAL) cells stimulated with Ca ionophore A23187 was examined in 7 patients with atopic asthma, and the results were compared to those in 7 nonatopic asthma patients. 1. The proportion of BAL basophilic cells was significantly higher in atopic patients than in nonatopic patients (p<0.05). 2. The content of histamine in BAL fluid was significantly higher in atopic (2.3mcg/mℓ) comparted to that in nonatopic patients (0mcg/mℓ)(p<0.001). The content of LTC4 was high in nonatopic (2.4ng/mℓ) than in atopic patients (0.5ng/ mℓ), however, this was not significant. 3. The release of histamine from BAL cells was 32.6% in atopic and 0% in nonatopic patients, and this was significant (p<0.001). The release of LTC4 from BAL cells was significantly higher in nonatopic (11.3ng/10(6)cell) than in atopic (3.5ng/10(6)cell)(p<0.02). The results demonstrate that histamine play more important role in atopic patients as a main triggering factor of attacks than LTC4. In contrast, in nonatopic patients, LTC4 is more predominant than histamine during early stage of asthma attacks. |
| Keywords | Histamine LTC4 BAL cells atopic asthma |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1995-09 |
| Volume | volume66 |
| Start Page | 14 |
| End Page | 20 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307251 |
| JaLCDOI | 10.18926/15118 |
|---|---|
| Title Alternative | ステロイド依存性重症難治性気管支喘息患者の血清コルチゾールに対する温泉療法の影響 |
| FullText URL | 066_008_013.pdf |
| Author | Mifune, Takashi| Mitsunobu, Fumihiro| Kajimoto, Kazuhiro| Hosaki, Yasuhiro| Yokota, Satoshi| Tanizaki, Yoshiro| |
| Abstract | Serum cortisol levels before and after spa therapy were compared in 30 patients with steroid-dependent intractable asthma (SDIA) in relation to clinical asthma types. 1. The mean level of serum cortisol in patients with type la-1 asthma was 2.0±0.7mcg/dℓ before spa therapy, and significantly increased to 9.0±3.1mcg/dℓ (p<0.001). The serum cortisol level of patients with type la-2 also significantly increased from 3.3±1.5mcg/dℓ before spa therapy to 5.9±3.1 mcg/dℓ after the therapy (p<0.05). 2. The level of serum cortisol in patients with type Ib increased from 4.0±1.6mcg/dℓ to 7.8±1.4mcg/ dℓ after spa therapy (p<0.001). In contrast, the serum cortisol levels in patients with type II were not significantly different before (2.7±1.3mcg/dℓ) and after spa therapy (3.5±3.0mcg/dℓ). The results showed that an increase in the levels of serum cortisol by spa therapy was more clearly observed in patients with type la-1 asthma compared to that in type la-2 or type Ib, and that, in contrast, the serum cortisol levels in patients with type II asthma did not significantly increase by spa therapy, since their asthma attacks were always severe and chronic in spite of long-term glucocorticoid regimen. |
| Keywords | Serum cortisol level (血清コルチゾール値) SDIA (ステロイド依存性重症難治性気管支喘息) clinical asthma type (気管支喘息臨床病型) spa therapy (温泉療法) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1995-09 |
| Volume | volume66 |
| Start Page | 8 |
| End Page | 13 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307485 |
| JaLCDOI | 10.18926/15117 |
|---|---|
| Title Alternative | ダニ喘息における気道遊走細胞からのヒスタミン遊離の加齢による減少 |
| FullText URL | 066_001_007.pdf |
| Author | Tanizaki, Yoshiro| Mifune, Takashi| Mitsunobu, Fumihiro| Kajimoto, Kazuhiro| Hosaki, Yasuhiro| Yokota, Satoshi| Ochi, Koji| Harada, Hideo| Ikeda, Satoru| Taketa, Kazuhisa| |
| Abstract | Histamine release from bronchoalveolar cells induced by house dust mite (HDm) was compared in patients with atopic asthma sensitive to HDm in relation to age. 1. Total cell number in bronchoalveolar lavage (BAL) fluid was larger in patients over the age of 40 years (9.10×10(6)) than in those aged between 20 and 39 years (6.25×10(6)), however, this was not significant. 2. Number of BAL eosinophils was not significantly different between the two age groups. 3. Number of BAL basophilic cells was significantly higher in younger patients (20-39 years) (1.85±1.03×10(2)/mℓ) than in older patients (40+ years) (0.39±0.24×10(2)/mℓ) (p<0.001). 4. Histamine release from BAL cells induced by HDm was significantly higher in younger patients (38.1±24.8%) than in older patients (0%) (p<0.001). These results suggest that histamine release from BAL cells in patients with HDm allergy decreases with aging. |
| Keywords | Bronchial asthma House dust allergy Histamine release Bronchoalveolar cells |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1995-09 |
| Volume | volume66 |
| Start Page | 1 |
| End Page | 7 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307845 |
| JaLCDOI | 10.18926/15096 |
|---|---|
| Title Alternative | 気管支喘息に対する複合温泉療法の作用機序 3.気道炎症反応との関連 |
| FullText URL | 067_099_106.pdf |
| Author | Hosaki, Yasuhiro| Mifune, Takashi| Mitsunobu, Fumihiro| Ashida, Kozo| Yokota, Satoshi| Tsugeno, Hirofumi| Takeuchi, Kazuaki| Nawa, Yuichiro| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| |
| Abstract | The degree and characteristic of airway inflammation were evaluated by the proportions of bronchoalveolar lavage (BAL) cells. Clinical asthma types such as Ia. simple bronchoconstriction, Ib. bronchoconstriction + hypersecretion, and Ⅱ. bronchiolar obstruction correlate with airway inflammation. The increased proportion BAL neutrophils is characteristic of type Ⅱ asthma, and increase in BAL eosinophil count is often observed in type Ib asthma. Bronchial hyperresponsiveness also correlates with airway inflammation. Action of spa therapy has been speculated to be related to airway inflammation, since the therapy has no action inhibiting IgE-mediated allergic reaction. In fact, spa therapy is more effective in patients with type Ib and type Ⅱ than in those with type Ia showing slight degree of airway inflammation. Bronchial hyperresponsiveness is also improved by spa therapy. From a point of view, the direct action of spa therapy may be to clean airways and improve damaged mucous membrane of the airways, leading to suppression of airway inflammation. |
| Keywords | Spa therapy (温泉療法) Airway inflammation (気道炎症反応) BAL eosinophilia (BAL好酸球増多) BAL neutrophilia (BAL好中球増多) Bronchial asthma (気管支喘息) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1996-11 |
| Volume | volume67 |
| Start Page | 99 |
| End Page | 106 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307894 |
| JaLCDOI | 10.18926/15094 |
|---|---|
| Title Alternative | 気管支喘息に対する複合温泉療法の作用機序 2.内分泌･自律神経系および心因的要素に対する効果 |
| FullText URL | 067_092_098.pdf |
| Author | Mifune, Takashi| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Yokota, Satoshi| Tsugeno, Hirofumi| Takeuchi, Kazuaki| Nawa, Yuichiro| Tanizaki, Yoshiro| Saito, Katsuyoshi| |
| Abstract | Actions of spa therapy on endocrine-autonomic nerve system and psychological factors were analyzed in patients with bronchial asthma. In endocrine function, serum levels of cortisol and ACTH tended to increase after spa therapy. In autonomic nerve system, decrease in concentrations of serum adrenalin and noradrenalin was observed after spa therapy, and the difference between the initial levels before spa therapy and the levels after the therapy was significant in serum levels of adrenalin. However, serum levels of substance P and Bradykinin were not affected by spa therapy. To evaluate the action of spa therapy on mental condition in patients with asthma, four kinds of psychological tests, CMI, SDS, CAl and SD, were carried out. Improvement of mental disorders in patients with asthma is observed after spa therapy in all psychological tests. These results suggest that spa therapy acts effectively on endocrine-autonomic nerve system and improve psychological conditions. |
| Keywords | Bronchial asthma (気管支喘息) Spa therapy (温泉療法) Endocrine-autonomic nerve system (内分泌・自律神経系) Psychological disorders (心的要素) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1996-11 |
| Volume | volume67 |
| Start Page | 92 |
| End Page | 98 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307879 |
| JaLCDOI | 10.18926/15093 |
|---|---|
| Title Alternative | 気管支喘息に対する複合温泉療法の作用機序 1.温泉療法の評価方法との関連 |
| FullText URL | 067_085_091.pdf |
| Author | Mitsunobu, Fumihiro| Mifune, Takashi| Hosaki, Yasuhiro| Ashida, Kozo| Yokota, Satoshi| Tsugeno, Hirofumi| Takeuchi, Kazuaki| Nawa, Yuichiro| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| |
| Abstract | Action mechanisms of complex spa therapy (swimming training in a hot spring pool, inhalation with iodine salt solution, and fango therapy) were studied in relation to patient age, clinical asthma type, and airway inflammation. Actions of spa therapy were observed by two clinical effects : direct and indirect effects. Improvement of subjective symptoms, ventilatory function, and bronchial hyperresponsiveness was observed as direct effects of spa therapy, and improvement of suppressed function of adrenocortical glands as indirect effects of the therapy. The clinical effects of spa therapy were higher in patients over the age of 40. Regarding clinical asthma type, the effects were larger in patients with type Ib and type II asthma than in those with type Ia. The efficacy of spa therapy was closely related with airway inflammation in patients with type Ib and type II asthma. |
| Keywords | complex spa therapy (複合温泉療法) clinical asthma type (臨床病型) ventilatory function (換気機能) bronchial hyperresponsiveness (気道過敏性) adrenocortical glands (副腎皮質) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1996-11 |
| Volume | volume67 |
| Start Page | 85 |
| End Page | 91 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307192 |
| JaLCDOI | 10.18926/15091 |
|---|---|
| Title Alternative | Ⅱ型喘息(細気管支閉塞型)と気管支肺胞洗浄液の好中球数 |
| FullText URL | 067_079_084.pdf |
| Author | Tanizaki, Yoshiro| Mifune, Takashi| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Yokota, Satoshi| Tsugeno, Hirofumi| Takeuchi, Kazuaki| Nawa, Yuichiro| Ochi, Koji| Harada, Hideo| Ikeda, Satoru| Taketa, Kazuhisa| |
| Abstract | Bronchial asthma is classified into three types ; type Ia (Ia-1 and Ia-2), type Ib, and type Ⅱ, by clinical symptoms (clinical diagnosis). Asthma is also classified by clinical findings and examinations (score diagnosis). Both classification systems show that markedly increased proportion of BAL neutrophils and marked decrease in % V25 value are characteristic of type Ⅱ, bronchiolar obstruction, asthma. However, there are some type Ⅱ asthma patients without BAL neutrophilia. In these patients, age is higher compared to those with BAL enutrophlia. Decrease in FEV1.0% value and decrease in the proportion of BAL lympocytes and serum IgG level, are not so remarkable as decrease in those with BAL neutrophilia. It has been suggested that type Ⅱ asthma with BAL neutrophilia correlates with suppression of humoral and cellular immunity, and same type of astma without BAL neutrophilia is in part caused by aging. |
| Keywords | Asthma classification (喘息分類) BAL lymphocytes (BALリンパ球) BAL neutrophils (BAL好中球) % V25 value Ⅱ型喘息 |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1996-11 |
| Volume | volume67 |
| Start Page | 79 |
| End Page | 84 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307924 |
| JaLCDOI | 10.18926/15088 |
|---|---|
| Title Alternative | サーモグラフィーによる体表面温度の測定 |
| FullText URL | 067_063_070.pdf |
| Author | Hosaki, Yasuhiro| Nawa, Yuichiro| Takeuchi, Kazuaki| Tsugeno, Hirofumi| Ashida, Kozo| Yokota, Satoshi| Mitsunobu, Fumihiro| Mifune, Takashi| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| Ikeda, Satoru| Taketa, Kazuhisa| |
| Abstract | Body Surface Temperature was observed by thermography. The surface temperature of a healthy person's lower limbs, after being cooled in a water bath, increased in parallel with time. Patients with Diabetes Mellitus had different patterns in the rate of increase of the surface temperature. After cold loading, one patient had a 99% recovery ratio of surface temperature, the same level as healthy volunteers (83%, and 88%), as calculated by a picture processing program with the computerized thermotracer. However, the recovery ratio of other patients was poorer, ranging from 56% to under 6% recovery. This measurement of elevation of body temperature is useful for the estimation of peripheral blood flow in patients with lower limbcirculation failure. |
| Keywords | Thermography (サーモグラフィー) Diabetes Mellitus (糖尿病) Peripheral Circulation (末梢循環) Cold Loading (冷水負荷) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1996-11 |
| Volume | volume67 |
| Start Page | 63 |
| End Page | 70 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307566 |
| JaLCDOI | 10.18926/15087 |
|---|---|
| Title Alternative | 気管支喘息症例に対する鼻腔内ステロイド療法 |
| FullText URL | 067_057_062.pdf |
| Author | Mifune, Takashi| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Yokota, Satoshi| Tsugeno, Hirofumi| Takeuchi, Kazuaki| Nawa, Yuichiro| Tanizaki, Yoshiro| Ochi, Koji| Harada, Hideo| |
| Abstract | Bronchial asthma is often accompanied with allergic rhinitis or chronic sinusitis. Mucosal abnormalities of sinonasal cavity may influence lower respiratory responses in patients with asthma. We experienced a case of 72-year-old woman with asthma, who had dyspnea on exertion and a large volume of expectoration of more than 100mℓ a day. Furthermore she had nasal symptoms (nasal obstruction and rhinorrea) with prominent post-nasal discharge. Computed tomography (CT) scans of sinonasal cavity revealed marked thickness of nasal mucosa. Although her asthma symptoms such as wheezing and dyspnea improved by administration of bronchodialators, antiallergic agent, and beclomethason di isocyanate (BDI) accompanied with spa therapy after admission, the volume of expectoration revealed no decrease and her peak expiratory flow (PEF) didn't increase. The volume of expectoration and the PEF showed marked improvement after starting of intranasal glucocorticoid therapy. It is suggested from her clinical course that treatment with intranasal glucocorticoids is very important in asthmatic patients with mucosal abnormalities of sinonasal cavity. |
| Keywords | bronchial asthma (気管支喘息) rhinitis (鼻炎) intranasal steroid therapy (鼻腔内吸入ステロイド療法) expectoration (喀痰排出) peak expiratory flow (ピークフロー) |
| Publication Title | 岡大三朝分院研究報告 |
| Published Date | 1996-11 |
| Volume | volume67 |
| Start Page | 57 |
| End Page | 62 |
| ISSN | 0918-7839 |
| language | English |
| File Version | publisher |
| NAID | 120002307814 |
| JaLCDOI | 10.18926/15056 |
|---|---|
| FullText URL | 027_161_172.pdf |
| Author | Nasu, Masako| |
| Publication Title | 岡山大学大学院社会文化科学研究科紀要 |
| Published Date | 2009-03-26 |
| Volume | volume27 |
| Issue | issue1 |
| Start Page | 161 |
| End Page | 172 |
| ISSN | 1881-1671 |
| language | English |
| Copyright Holders | 岡山大学大学院社会文化科学研究科 |
| File Version | publisher |
| NAID | 120002307908 |
| JaLCDOI | 10.18926/15053 |
|---|---|
| FullText URL | 027_103_121.pdf |
| Author | ZAW SOE MIN| |
| Publication Title | 岡山大学大学院社会文化科学研究科紀要 |
| Published Date | 2009-03-26 |
| Volume | volume27 |
| Issue | issue1 |
| Start Page | 103 |
| End Page | 121 |
| ISSN | 1881-1671 |
| language | English |
| Copyright Holders | 岡山大学大学院社会文化科学研究科 |
| File Version | publisher |
| NAID | 120002307304 |
| JaLCDOI | 10.18926/fest/15045 |
|---|---|
| FullText URL | 014_023_028.pdf |
| Author | Chegbeleh Larry Pax| Nishigaki, Makoto| Akudago John Apambilla| Alim Md. Abdul| Komatsu, Mitsuru| |
| Abstract | During underground space development, groundwater seepage mostly occurs which may seriously affect the stability of deep excavations as well as retard progress of construction. For smooth progress of work, effective construction and operation of a disposal facility for high level radioactive waste (HLW), it is important to control seepage into excavations by sealing off fractures or fissures and excavation disturbed zones (EDZ) to control groundwater inflow during the construction phase of such a facility. In this study, a series of experiments were conducted on ethanol/bentonite slurries in the laboratory with the aim of determining the effect of a hydrophilic solvent such as ethanol on the hydraulic and injection characteristic of bentonite slurry for the sealing of fissures to control ground water seepage during the construction phase of a repository. Preliminary results revealed ethanol/bentonite slurry as an effective grouting material capable of penetrating micro fractures (100μm or less) and with the permeability of the grouted medium being as low as 10E-7cm/s. The results also show that the effectiveness and efficiency of grouting is dependent on the type of injection and fissure size. Dynamic injection was observed to be efficient as it was able to inject high dense slurry. |
| Keywords | Dynamic injection permeability swelling bentonite clay |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2009-03-16 |
| Volume | volume14 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 28 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002307422 |
| JaLCDOI | 10.18926/fest/15044 |
|---|---|
| FullText URL | 014_017_022.pdf |
| Author | Akudago John Apambilla| Nishigaki, Makoto| Chegbeleh Larry Pax| Komatsu, Mitsuru| Alim Md. Abdul| |
| Abstract | Soil-groundwater salinity issues have assumed a worldwide dimension. It is believed that when groundwater level is less than 2 m there is the possibility of salinity transfer between the soil and groundwater due to factors such as capillary forces. One-dimensional column tests were conducted in the laboratory to find a suitable capillary cut design. The capillary cut material comprised a 20 cm thick 2–4.7 mm and a combination of 2–4.7 mm and 9.5–19 mm gravel material. In all, four different designs were tested by compacting Oji sand in the various columns. Groundwater level of 0.75 m from the top was maintained while salt solution of 10% concentration was allowed to flow under capillary forces through the columns. The water content in the columns were monitored using frequency domain reflectrometry-vector analyzer (FDR-V) after which soil samples from 10 m interval in each column was taken for electrical conductivity measurements. The results showed that 5 cm thick, 2–4.7 mm gravel sandwiching coarser material (e.g. 5 cm thick 9.5–19 mm or 10 cm thick 9.5–19 mm gravel material) proved to be very useful design to cut capillarity. |
| Keywords | soil-groundwater salinity capillary cut filter media design |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2009-03-16 |
| Volume | volume14 |
| Issue | issue1 |
| Start Page | 17 |
| End Page | 22 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002308001 |
| JaLCDOI | 10.18926/fest/15043 |
|---|---|
| FullText URL | 014_013_016.pdf |
| Author | Alim Md. Abdul| Nishigaki, Makoto| Chegbeleh Larry Pax| Akudago John Apambilla| Komatsu, Mitsuru| |
| Abstract | Soil-water characteristic curve (SWCC) is an important soil function in an unsaturated soil mechanics field for design and analyses of any unsaturated earth structures. Determination of SWCC is not easy and more so time consuming. Generally, ceramic disc with high air-entry value has been used in the pressure plate apparatus for this purpose by many people. Now-a-days membrane filter is being used as a suitable alternative to ceramic disc. However, experience shows, it has disadvantage of breakage after one time use especially with coarse grain soils (sandy soils). In this study, membrane filter with stainless wire mesh was used to solve this problem and the SWWC was compared with the results obtained without wire mesh. Results showed that membrane filter with stainless wire mesh can be used to determine the SWCC for coarse grain soils. |
| Keywords | SWCC Unsaturated sandy soils Membrane filter Stainless wire mesh |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2009-03-16 |
| Volume | volume14 |
| Issue | issue1 |
| Start Page | 13 |
| End Page | 16 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002307956 |
| JaLCDOI | 10.18926/fest/15042 |
|---|---|
| FullText URL | 014_001_012.pdf |
| Author | Morimoto, Tomoko| Zenihana, Tomohiro| Maitani, Yusuke| Ishikawa, Hirofumi| |
| Abstract | The spread of the highly pathogenic avian influenza (H5N1) among domestic poultry and wild birds has caused global concern over the outbreak of an influenza pandemic of H5N1. The "Pandemic Influenza Preparedness Action Plan" determines the strategy against an influenza pandemic in Japan. Simulations were carried out using an individual based model (IBM). The IBM targeted a virtual area with a population of 100,000 using the demographic data of Sapporo-city, Hokkaido. The effectiveness of targeted antiviral prophylaxis (TAP), geographical targeted antiviral prophylaxis (GTAP), school closure, and pre-pandemic vaccination were explored. Moreover, this study focused on infections among children, who have a high attack rate, and analyzed the effectiveness of interventions for school-age targeted antiviral prophylaxis (STAP). Consequently, TAP, which is recommended by the "Pandemic Influenza Preparedness Action Plan", was found to have high effectiveness in the suppression of the outbreak. Moreover, this study showed the importance of intervention among children, such as STAP and school closure, to prevent the spread of H5N1 influenza. |
| Keywords | Influenza Pandemic H5N1 Individual Based Model (IBM) Sapporo |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2009-03-16 |
| Volume | volume14 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 11 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002307373 |
| JaLCDOI | 10.18926/ESR/15034 |
|---|---|
| Title Alternative | 中国寧夏地域における日照時間から日積算日射量の推定 |
| FullText URL | 015_079_086.pdf |
| Author | Yang, Qin| Tsukamoto, Osamu| |
| Abstract | For the estimation of daily solar radiation from sunshine duration, observation data of Yinchuan station in Ningxia, China was used. Using a linear relationship between solar radiation and extraterrestrial radiation including relative sunshine duration and daylength, we obtained local coefficients s a =0.18, s b =0.62 from past five years data(1981-1985). Using the same method, coefficients for Guyuan region were confirmed too as a representative of south part of Ningxia province. Applying the local coefficients and calculation formula of solar radiation, we validated daily solar radiation of two years(1986-1987) of Yinchuan station and four years(1991-1994) of Guyuan station. The results showed high correlation coefficients of R2=0.94 in Yinchuan and R2=0.85 in Guyuan. Error analysis was applied using mean bias error(MBE), mean absolute bias error(MABE), root mean square error(RMSE)，mean absolute percentage error(MAPE) on solar radiation of Yinchuan(1973-2006) and Guyuan(1986-2006) stations. Results showed that mean absolute bias error(MABE) was less than 13% and 17% in Yinchuan station and Guyuan station respectively. Then we have applied this method to the estimation of daily solar radiation at ‘Yongning’ station(near Yinchan) with the sunshine duration data at ‘Yongning’. The estimated values were compared with observed daily solar radiation at Yinchuan as past twelve years data(1989-2000). The results showed good linear relationship with high correlation coefficient of R2= 0.88. |
| Keywords | Daily solar radiation Extraterrestrial radiation Relative sunshine duration Local coefficient |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2009-03-31 |
| Volume | volume15 |
| Issue | issue1 |
| Start Page | 79 |
| End Page | 86 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002307142 |
| Author | Meltem OKUR DINCSOY| |
|---|---|
| Published Date | 2009-03-26 |
| Publication Title | 北東アジア経済研究 |
| Volume | volume7 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/15013 |
