検索結果 5704 件
| 著者 | 荒木 康之| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 岡﨑 悟| |
|---|---|
| 発行日 | 1987-06-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 5-6号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 小林 弘治| |
|---|---|
| 発行日 | 1987-04-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 松枝 秀樹| |
|---|---|
| 発行日 | 1987-04-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 有森 稔| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 坂本 裕治| |
|---|---|
| 発行日 | 1987-04-30 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 3-4号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 滝沢 正| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 宋 振嵐| 菊田 彰夫| 大谷 修| 大塚 愛二| 村上 宅郎| 佐能 正| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 渡辺 正博| |
|---|---|
| 発行日 | 1987-02-28 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 高橋 健二| |
|---|---|
| 発行日 | 1987-02-28 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 塩出 純二| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 脇谷 勇夫| |
|---|---|
| 発行日 | 1987-02-28 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 99巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 吉岡 孝| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 出宮 通孝| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 出宮 通孝| |
|---|---|
| 発行日 | 1988 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 100巻 |
| 号 | 1-2号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/15812 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_16_2_75.pdf |
| 著者 | Okamoto Takuji| |
| 抄録 | Some modifications of an asynchronous ring arbiter are proposed. This arbiter is composed of a chain of cells. Each cell has one to one correspondence to a device. In the chain, there exists only one privilege to arbitrate conflicts of requests from many devices. A class of modifications is high speed arbiters, obtained by increasing the number of connecting wires between two adjacent cells. As the results, the time required for the privilege to pass through a cell decreases by about one-half compared with the original arbiter. Another class of modifications is arbiters with priority rules. They are obtained by adding a few hardware to the original arbiter. The priority order of request acknowledgements in all the cells is specified. Using above modifications, conflicts of requests in many digital systems may be feasibly arbitrated. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1982-03-29 |
| 巻 | 16巻 |
| 号 | 2号 |
| 開始ページ | 75 |
| 終了ページ | 87 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307859 |
| JaLCDOI | 10.18926/15811 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_20_1_45.pdf |
| 著者 | Korenaga Takashi| Moriwake Tosio| Takahashi Teruo| |
| 抄録 | A simple system was developed for the fully automatic and continuous measurement of chemical oxygen demand (COD) in wastewater samples based on colorimetry of dichromate. A sample and a solution of sulfuric acid (1+1) containing 2mM potassium dichromate are continuously pumped with a double-reciprocating micro-pump at each flow rate of 0.3 ml/min. The wastewater sample is filtered at first with a 100-mesh stainless filter and then mixed with the dichromate solution in the mixing joint. The mixture is introduced into a reaction coil made of poly(tetrafluoroethylene) tubing (1 mm i.d., 3 mm o.d., and 20 m length), being placed in an oil bath (120℃). After reaction, the mixture passes into a quartz tubular flow-through cell (10 mm path length, 18 μl volume) in a spectrophotometer, and the absorbance is measured at 445 nm. The COD value of the sample is automatically estimated from the amount of decreased absorbance. The system was successfully applied to COD measurement of some waters, and to continuous monitoring of COD in wastewater of university laboratories. The system was also evaluated by comparing with the flow injection analyzer system previously developed by the authors. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1985-11-08 |
| 巻 | 20巻 |
| 号 | 1号 |
| 開始ページ | 45 |
| 終了ページ | 52 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307695 |
| JaLCDOI | 10.18926/15765 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_15_1_111.pdf |
| 著者 | Korenaga Takashi| Ikatsu Hisayoshi| Moriwake Tosio| Takahashi Teruo| |
| 抄録 | On the flow injection analysis (FIA) of chemical oxygen demand (COD), silver salt was added as an oxidation catalyst for COD substances and a masking agent for halide to improve operating conditions of the FIA apparatus. Both of a proper concentration of potassium permanganate solution and 6.0 % sulfuric acid solution containing 0.1 % silver nitrate are individually pumped up with respective flow rates of 0.51 ml min(-l) and merged into a carrier stream. A 20 μ1 of sample solution is injected into the flow of sulfuric acid solution at just before the merging place. The sample mixed with the carrier solutions in a reaction manifol(polytetrafluoroethylene tubing: 0.5 mm i.d. x 30 m), is passed through a thermostated bath at 100 °c and led to a flow cell for the absorbance measurements at 525 nm. The absorbances are continuously recorded with time. The peaks in the recordings showed good reproducibility and the calibration obtained at a linear concentration range of 0 - 170 mg 1(-1) COD with glucose as standard. The detection limit and precision confirmed with this method were 5 mg 1(-1) and 0.8 %, respectively. Chloride ion up to 200 mg 1(-1) did not interfere without elimination of a silver chloride precipitate. By the present FIA method, several industrial waste water samples were analyzed at a sampling rate of about 40 samples per hour, and their apparent COD values were compared with those found by the manual JIS method. Both of the methods gave the similar results within an error range from -35 to +5 %. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1980-11-29 |
| 巻 | 15巻 |
| 号 | 1号 |
| 開始ページ | 111 |
| 終了ページ | 121 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307490 |
| JaLCDOI | 10.18926/15752 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_14_2_119.pdf |
| 著者 | Korenaga Takashi| Ikatsu Hisayoshi| Moriwake Toshio| Takahashi Teruo| |
| 抄録 | A new method based on the principle of flow injection analysis is presented for the semiautomated determination of chemical oxygen demand (COD) in environmental water samples. The method is rapid and continuous, and suitable for the monitoring of COD in wastewaters. The apparatus used was simply constructed by parts commercially available for high performance liquid chromatography. Teflon tubing heated with a boiling water was used as a reactor and simultaneously used for mixing coils and transmission lines. The operating conditions were examined to apply the determination of COD in wastewaters by using glucose as a standard COD substance. The procedures recommended are as follows: Both 4.9x10(-4) M potassium permanganate and 6.7 % sulfuric acid solutions are individually pumped, 20 μl of a sample solution is injected into the flow of the sulfuric acid solution, and then mixed with a mixing joint. The mixed solution is transported to a flow cell situated in a spectrophotometer fixed at a wavelength of 525 nm, and decrements of absorbance are recorded. The peaks were reproducibly obtained at a concentration range of 10 - 200 mg-COD 1(-1). Chloride up to 1000 mg 1(-1) was not interfered at all. Various wastewater samples were analyzed by the proposed method at a sampling rate of 30 samples per hour, and the apparent COD values obtained were compared with the manual COD ones obtained by JIS method. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1980-03-01 |
| 巻 | 14巻 |
| 号 | 2号 |
| 開始ページ | 119 |
| 終了ページ | 129 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307775 |
| JaLCDOI | 10.18926/15697 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_5_61.pdf |
| 著者 | Misaki Takayoshi| Okamoto Takuji| Yamamoto Hideki| |
| 抄録 | An asynchronous delay line for PAM signal having controlled delay capability is proposed. The delay line in a cascaded chain of identical memory cells. Each sample of the sequence of the input PAM signals passes or is shifted in particular cell depending on whether the succeeding cell is empty or not. A cell is composed of two memory capacitors with the peripheral control circuits. In this paper, especially, an example of the circuit for cell is shown and its several characteristics are discussed. At the end, some experimental results are given. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1970-09-01 |
| 巻 | 5巻 |
| 号 | 1号 |
| 開始ページ | 61 |
| 終了ページ | 66 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307866 |