検索結果 3823 件
| JaLCDOI | 10.18926/21334 |
|---|---|
| タイトル（別表記） | The Geochemistry of Rocks from Asama Volcano, Japan. New Approaches in the Quantitative Interpretation of the Chemical Composition of Volcanic Rocks |
| フルテキストURL | pitsr_032_001_085.pdf |
| 著者 | 松井 義人| |
| 抄録 | In dealing with the geochemistry of volcanic rocks, it appears imperative, first, to refine the procedure of rock analysis with respect to both major and minor components, and second, to improve present methods of interpreting analytical data on common rock suites such as basalts, andesites and dacites. In regard to the first problem, the rapid method of silicate analysis as described by Shapiro and Brannock (1956) and by Riley (1958) deserves special attention. With such a method it is possible to estimate the accuracy and precision of data with far greater ease than is possible with a classical one, yet without any loss of quality. For the determination of some components, however, it is felt that the procedures recommended previously lack precision and/or simplicity. In Part I of this paper, new methods are suggested for these components. The sum of Mg, Ca and Mn is titrated with EDTA in the presence of Al, Fe and other metals, using thymolphthalein complexone as indicator at pH 10-10.5. The sum of Al and Fe is determined by the back-titration of excess EDTA with the standard Cu solution. PAN is used as indicator at pH about 4, and tartrate is added as the masking agent of Ti. Na and K are determined by flame photometry using very dilute solutions (1-5ppm Na or K), without the separation of other metals and without the use of the internal standard. Sr is included in the scheme of analysis, and is determined by flame photometry according to the standard addition technique. These procedures are tested for their accuracy using the standard samples G-1 and W-1 (Tables 3, 5, 9, 12 and 15). Procedures for other components are also described in the text in full detail. The system of analytical procedures recommended is shown in Table 16. To investigate the problem of the interpretation of compositional variation, typical rocks from Asama volcano and the surrounding area were selected, namely, andesites and dacites of calc-alkaline type. Twenty-one samples, described in Tables 18 and 19, are analyzed according to the above procedures. Results are shown in Table 20. Variation diagrams are presented in Figs. 3 to 5. Since it may be questioned whether the "trend" seen in the diagrams implies a genetic relationship, a least squares approximation technique has been introduced in order to determine whether the composition of the main components of a rock (F) can be expressed by the linear combination of a selected set of compositions of a magma and the phenocrysts crystallized from it : F(o)=F(1)x(1)+F(2)x(2)+······+F(m)x(m) ······(1) where F(1), F(2), ... denote the compositions of a magma and minerals, and F(o) is the calculated composition of F. These calculations lead to the conclusion that there are at least two series of rocks in Asama (Tables 25 to 30 and Fig. 9), distinguished from each other mainly by their K(2)O content. Those rocks showing features of assimilation (Aramaki, 1963) all belong to the K(2)O-rich series. Contents of minor components such as TiO(2), MnO, P(2)O(5) and SrO are analyzed by the linear regression technique in two ways, for example : TiO(2)(o)=C(1)x(1)+C(2)x(2)+ ······(2) and TiO(2)(o)=aMgO+bFe(o) +cK(2)O ······(3) These methods are found useful in discriminating rocks of different ongm and in distinguishing the characteristic behavior of each component. Results of calculations (Tables 31 to 34) support the conclusion reached by calculations based on the contents of major components. |
| 出版物タイトル | 岡山大学温泉研究所報告 |
| 発行日 | 1963-10-25 |
| 巻 | 32巻 |
| 開始ページ | 1 |
| 終了ページ | 85 |
| ISSN | 0369-7142 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002310984 |
| JaLCDOI | 10.18926/21158 |
|---|---|
| タイトル（別表記） | Experimental study of sulfur isotope exchange between S0(4)(2-) and H(2)S (aqueous) at 400℃ and 1000 bars water pressure |
| フルテキストURL | pitsr_050_001_015.pdf |
| 著者 | 鎌田 恵美| 酒井 均| 木島 宣明| |
| 抄録 | Experimental procedures used in this study are the same as those developed by Sakai and Dickson (1978). 0.005 M Na(2)S(2)O(3) solutions were heated to 400℃ under 1000 bar water pressure in a gold bag of Dickson gold-bag equipment (Fig. 1). At an elevated temperature Na(2)S(2)O(3) quickly and completely decomposed into 1:1 mixture of SO(4)(2-) and H(2)S (eq. (1)) and subsequent isotope exchange (eq. (2)) was monitored by consecutively withdrawing aliquots of solution for chemical and isotopic analyses at desired time intervals. For the preparation of SO(2) for isotope analyses, 2 to 5 mg BaSO(4) was thoroughly mixed with silica glass powder of 10 times the BaSO(4) in weight and heated to 1400℃ or so in sealed, evacuated silica glass tubings (see Fig. 2 and equation (4)). The technique is a modification of Holt and Engelkemeir (1971). The (18)O/(16)O ratios of SO(2) thus formed stayed constant by exchange with silica glass powder (Fig. 3). Numerical data of the three runs performed in this study are summarized in Tables 1 to 3. In runs 2 and 3, a small aliquot of (34)S- enriched H(2)SO(4) was added into the starting solution and thus equilibrium was approached from above the quilibrium value (see Fig. 4). When isotope exchange occurs between two molecules, X and Y, the reaction rate, r, is related to the extent of exchange, F, at given time, t, by equation (17), where X and Y indicate concentrations of given species, α(e), α(o) and α denote the fractionation factor at equilibrium, at time t=0 and at an arbitrary time t, and F = (α - α(o))/(α(e) - α(0)) or the extent of isotope exchange. Assuming the exchange rate is of the first order with respect to both X and Y and to the β'th power of hydrogen ion activity, a(H)(+), eq. (17) reduces to eq. (19), where k(1) denotes the rate constant. If X, Y and pH of solution stayed constant during the run, the half-time, t(1/2), of the exchange reaction can be obtained graphically as shown in Fig. 5. The t(1/2) for runs 1, 2, and 3 are determined to be 5.8, 5.5 and 6.1 hrs, respectively. Introducing F=0.5 and t=t(1/2) into eq. (19), we obtain eq. (20) which is graphically shown in Fig. 6 using the data by the present work and those by Sakai and Dickson(1978). The numerical values of log k(1) + 0.16 may be obtained by extrapolating the lines to pH=0 and, from these values, the rate constant, k(1) , may be calculated for temperatures of 300° and 400℃. From these two values of k(1) and from the Arrhenius plot, the activation energy of the exchange reaction was calculated to be 22 kcal/mole, a much smaller value than 55 kcal/mole obtained by Igumnov (1977). The value of β is found to be 0.29 at 300℃ and 0.075 at 400℃, although the physico-chemical nature of β is not clear to the present authors. Using these values, eq. (24), where C is a constant, is derived which would enable us to calculate the t(1/2) of any system of known ΣS and pH. However, as we do not know yet how β varies with different systems, eq. (24) is applicable only to limited systems in which temperature, total sulfur contents and pH are similar to those of the present study. Fig. 7 illustrates how t(1/2) varies with pH and total sulfur content at 300° and 400℃ and predicts t(1/2) for some solutions obtainable by hydrothermal reactions of seawater with various igneous rocks. The average equilibrium fractionation factor at 400℃ obtained by this study is 1.0153, in good accord with 1.0151 given by Igumnov et al. (1977). Theoretical fractionation factors between SO(4)(2-) and H(2)S have been calculated by Sakai (1968) , who gives too high values compared to the experimental data obtained by this and other researchers (Fig. 9). In the present study, the reduced partition function ratio (R.P.F.R.) of SO(4)(2-) was recalculated using two sets of the vibrational frequencies of SO(4)(2-) (shown in Table 5) and the valence force fields of Heath and Linnett (1947), which reproduces the observed frequencies of SO(4)(2-) better than Urey-Bradley force field used by Sakai (1968). The results of new calculation are shown in Table 6. This table also includes the R.P.F.R. of H(2)S which was calculated by Thode et al. (1971). Using these new R.P.F.R. of SO(4)(2-) and H(2)S, the fractionation factors between SO(4)(2-) and H(2)S were calculated and are listed in the last column of Table 6 and plotted in Fig. 9. Fig. 9 indicates that the new calculation gives values more shifted from the experimental values than before. The major sulfate ions in our solution at 300° and 400℃ exist as NaSO(4)(-) (Sakai and Dickson, 1978; see also Table 4 of this paper) and, therefore, the measured fractionation factors are those between NaSO(4)(-) and H(2)S. The discrepancy between the theory and experiments may, at least, be partially explained by this fact, although other more important reasons, which are not known to us at the moment, may also exist. |
| 出版物タイトル | 岡山大学温泉研究所報告 |
| 発行日 | 1980-03-25 |
| 巻 | 50巻 |
| 開始ページ | 1 |
| 終了ページ | 15 |
| ISSN | 0369-7142 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002310990 |
| JaLCDOI | 10.18926/21122 |
|---|---|
| タイトル（別表記） | Clinical problems of long-term steroid regimen for bronchial asthma, with reference to steroid-dependent cases |
| フルテキストURL | pitsr_053_051_055.pdf |
| 著者 | 周藤 真康| 駒越 春樹| 村嶋 誠| 岡田 千春| 谷崎 勝朗| 森永 寛| 塩田 雄太郎| 木村 郁郎| |
| 抄録 | Adverse side effects of steroid therapy were investigated in 32 asthmatic patients. Thirty-two patients were classified into three groups according to steroid therapy for the past five years; group 1 has been treated with continuous steroid therapy, group 2 with occasional steroid therapy and group 3 without steroid therapy. The results were as follows. 1. Group 1 showed a low level of serum cortisol at 8-9 a. m. The serum concentration of cortisol in patients with daily steroid regimen was lower as compared to that in patients with alternateday steroid therapy. 2. The daily profile of serum cortisol was low in the steroid dependent asthmatic patients, and little increase of serum cortisol level after the administration of prednisolone was shown in group 1. 3. Serum IgG and IgM levels were significantly low in steroid dependent asthmatic patients. 4. The level of serum potassium was low in group 1. |
| 出版物タイトル | 岡山大学温泉研究所報告 |
| 発行日 | 1983-03-25 |
| 巻 | 53巻 |
| 開始ページ | 51 |
| 終了ページ | 55 |
| ISSN | 0369-7142 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002310967 |
| JaLCDOI | 10.18926/21121 |
|---|---|
| タイトル（別表記） | Clinical problems of long-term steroid regimen for bronchial asthma, with reference to steroid-dependent cases |
| フルテキストURL | pitsr_053_045_049.pdf |
| 著者 | 駒越 春樹| 周藤 真康| 岡田 千春| 谷崎 勝朗| 森永 寛| 貴谷 光| 合田 吉徳| 多田 慎也| 高橋 清| 木村 郁郎| |
| 抄録 | Adverse side effects of steroid therapy were investigated in 32 asthmatic patients. Thirty-two patients were classified into three groups according to steroid therapy for the past five years; group 1 has been treated with continuous steroid therapy, group 2 with occasional steroid therapy and group 3 without steroid therapy. The results were as follows. 1. Group 1 showed a low level of serum cortisol at 8-9 a. m. The serum concentration of cortisol in patients with daily steroid regimen was lower as compared to that in patients with alternateday steroid therapy. 2. The daily profile of serum cortisol was low in the steroid dependent asthmatic patients, and little increase of serum cortisol level after the administration of prednisolone was shown in group 1. 3. Serum IgG and IgM levels were significantly low in steroid dependent asthmatic patients. 4. The level of serum potassium was low in group 1. |
| 出版物タイトル | 岡山大学温泉研究所報告 |
| 発行日 | 1983-03-25 |
| 巻 | 53巻 |
| 開始ページ | 45 |
| 終了ページ | 49 |
| ISSN | 0369-7142 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002311040 |
| JaLCDOI | 10.18926/21109 |
|---|---|
| タイトル（別表記） | Properties of materials under hydrothermal conditions. I. Permeation of hydrogen through gold membrane |
| フルテキストURL | pitsr_054_055_060.pdf |
| 著者 | 木島 宣明| |
| 抄録 | Permeation rate of hydrogen through a gold cell made as a reaction vessel for a Dickson-type hydrothermal apparatus was measured at 50°intervals from 300°to 450℃ under a hydrothermal condition. The gold cell chosen for the measurement had a shape and size illustrated in Fig. 1 when it was fully expanded, and was a typical one in the meaning that it had been used several times for hydrothermal experiments (its total history may be equivalent to one month at 490℃) and that it had a body enlarged by about 8% in diameter from the original size as a result of pinhole check made by applying a gas pressure to the inside. The cell was filled with an appropriate amount of pure water, placed in a pressure vessel made of Ni-base alloy, pressurized by injecting water to the outside of the cell and kept under predetermined temperatures and pressure (=1 kbar). Meanwhile, small fractions of the waters inside and outside the cell were sampled at times and analyzed for H(2) gas-chromatographically as described in ref. (5). H(2) concentrations in the samples (CH(2)) were converted to H(2) fugacity values by using the conversion factors (Y) given in ref. (6). At each temperature, the permeation rate (k) of H(2) through the cell is evaluated by correlating the measured fH(2) values with time (t) according to eq. (2), where fo is the fH(2) in the outer water and is a constant, and fi and m are the fH(2) in and the mass of the inner water, respectively. The relevant data and results are shown in Table 1. The present data for the permeation rate φ, expressed in c㎥ H(2) at STP per 1c㎡ surface area, 1 mm wall thickness, 1 (bar)(1/2) of (fH(2))(1/2) difference and 1 hour, are plotted in Fig. 2 in relation to 1/T (K) and compared with one available data, which is a combination of reported solubility and diffusion coefficient data for hydrogen into gold at higher temperatures. The present data can be fitted into eq. (3). The present result may be of importance for hydrothermal experimental studies of geochemical redox reactions and of hydrogen isotope exchange reactions, and the technique used may also be important as a new, simple method of measuring hydrogen permeability through noble metals. |
| 出版物タイトル | 岡山大学温泉研究所報告 |
| 発行日 | 1984-03-25 |
| 巻 | 54巻 |
| 開始ページ | 55 |
| 終了ページ | 60 |
| ISSN | 0369-7142 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002310991 |
| 著者 | 斎藤 正信| 大城 匡豊| 銀 一之| 橋詰 俊雄| 倉林 譲| |
|---|---|
| 発行日 | 1999-09 |
| 出版物タイトル | 岡山実験動物研究会報 |
| 巻 | 16巻 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 佐藤 康晴| 吉野 正| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 河崎 陽一| 松永 尚| 千堂 年昭| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 田中 雅人| 杉本 佳久| 三澤 治夫| 高畑 智宏| 尾﨑 敏文| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 小橋 春彦| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 三村 秀文| 藤原 寛康| 平木 隆夫| 郷原 英夫| 芝本 健太郎| 木股 敬裕| 尾﨑 敏文| 佐々木 了| 金澤 右| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 濱野 亮輔| 稲垣 優| 西江 学| 徳永 尚之| 常光 洋輔| 大塚 眞哉| 岩川 和秀| 岩垣 博巳| 園部 宏| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 難波 正義| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 大谷 寛之| 大塚 文男| 槇野 博史| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 渡辺 信之| 髙岡 宗徳| 櫻間 一史| 友野 靖子| 畠山 慎二| 大森 修| 元木 崇之| 白川 靖博| 山辻 知樹| 羽井佐 実| 松岡 順治| Beer, David G.| 長塚 仁| 田中 紀章| 猶本 良夫| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 有海 康雄| 黒木 美沙緒| 團迫 浩方| 阿部 健一| 池田 正徳| 脇田 隆字| 加藤 宣之| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 安原 章浩| 和田 淳| 江口 潤| 中司 敦子| 村上 和敏| 神崎 資子| 勅使川原 早苗| 槇野 博史| |
|---|---|
| 発行日 | 2010-04-01 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 122巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 本水 昌二| Hazaki, Yoshito| 大島 光子| 桐栄 恭二| |
|---|---|
| 発行日 | 1987-06-10 |
| 出版物タイトル | Analytical Sciences |
| 巻 | 3巻 |
| 号 | 3号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Kubota Hiroki| Katsuki Miki| 本水 昌二| |
|---|---|
| 発行日 | 1990-10-10 |
| 出版物タイトル | Analytical Sciences |
| 巻 | 6巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 本水 昌二| 大島 光子| 米田 直生| 岩知道 正| |
|---|---|
| 発行日 | 1990-04-10 |
| 出版物タイトル | Analytical Sciences |
| 巻 | 6巻 |
| 号 | 2号 |
| 資料タイプ | 学術雑誌論文 |