JaLCDOI 10.18926/15542
FullText URL Mem_Sch_Eng_OU_1_37.pdf
Author Takahashi Katsuaki| Tanioka Mamoru| Yoshio Tetsuo|
Abstract Studies were carried out in order to know in some detail the transport phenomena through the interface in the viscous liquid moving in laminar flow. Experiments were carried out using ca. 88% glycerin solution, one added with an acid, and the other with alkali together with a small amount of phenolphthalein. Acidic glycerin solution was supplied to a long transparent cuvette of rectangular cross section through which the liquid was made to move slowly enough to establish the laminar flow, thin cords of coloured basic solution were introduced in the direction normal to the axis of flow at regular time intervals. The so obtained patterns of bending cords shortening in regular succession were photographed also at regular time intervals. The authors attribute the origin of the changing patterns of the cords to the velocity gradient existing in the acidic solution which accelerates the diffusion by increasing the concentration gradient near the cords as well as the increase of the interfacial area, and also the decrease of the thickness of the cords. Based on these idea a mathematical analysis was carried out and was obtained an equation which gives the change of the concentration distribution of two dimensional cords. Fair agreement was obtained between the results of mathematical analysis and those of experiments. Furthermore, the influence of the thickness of the cords, and that of the velocity gradient as well as of the diffusion coefficient on the concentration at the center of the cords were discussed.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1966-03-31
Volume volume1
Issue issue1
Start Page 37
End Page 43
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307624
JaLCDOI 10.18926/15541
Title Alternative CHEMICAL STUDIES ON MISASA HOT SPRING (16) ON SINTER DEPOSITS.
FullText URL 006_004_011.pdf
Author Ashizawa, Takashi|
Abstract A calcareous sinter, siliceous sinter, flowers of sulfur, mangan wad, and ferric oxide were found as thermal deposits in Misasa. And the most strongly radioactive sinter deposit in Japan, mangan as its chief constituent, occured in Misasa. A mechanism of its biological production was investigated, but proved negligible. The color of deposits was described with the degree of hue, luminosity and saturation. No simple relationship was recognized between the color, content of iron or mangan, and radioactivity. The soluble silica in thermal waters does not coprecipitate with iron and aluminum at room temperature, but it coprecipitates with aluminum at high temperature. Magnesium ion in spring waters is effective on the coprecipitation of aluminum. A colloidal silica does not exist in the thermal waters of Misasa, but in the thermal sinter deposit an alkalin soluble colloidal silica was contained less than 0.1 per cent. Coexisting bicarbonate ion is proved to be effective on the production of calcareous sinter. Fluorine and arsenic were found concentrated in the sinter deposit.
Publication Title 岡山大学温泉研究所報告
Published Date 1952-03
Volume volume6
Start Page 4
End Page 11
ISSN 0369-7142
language 日本語
File Version publisher
NAID 120002307393
JaLCDOI 10.18926/15540
FullText URL Mem_Sch_Eng_OU_1_29.pdf
Author Takahashi Teruo|
Abstract In this report, gas absorption by a rotating cylindrical liquid jet, whose water traveling length is short, is considered experimentally. Experiments of absorption are proceeded in pure C0(2) gas and water at 20℃: C0(2) gas is cross-currently contacted with a liquid jet. From experimental results, absorption rate was observed to be large immediately after liquid was spouted from small hole drilled through rotating cylinder.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1966-03-31
Volume volume1
Issue issue1
Start Page 29
End Page 36
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307556
JaLCDOI 10.18926/15539
FullText URL Mem_Sch_Eng_OU_1_23.pdf
Author Yamada Toshiro| Kitagawa Shigeru|
Abstract For assessing the qualities of sheet metal for deep-drawing by the tension test, γ value is adopted generally. However, it is difficult and complicated to obtain the precise value of it. In order to obtain the value precisely and easily, the authors have made trialy the devices to measure directly the elongation and the reductions of width and thickness; these devices are transducers to which the electrical resistance strain gauges are applied. By using these devices, precise, continuous, multipoint and quick measurement can be done. It has been clarified by the continuous measurements that γ values are not the same relating to the elongations. It is recommended that one uses γ value obtained at about 25% elongation.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1966-03-31
Volume volume1
Issue issue1
Start Page 23
End Page 28
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307551
JaLCDOI 10.18926/15538
FullText URL Mem_Sch_Eng_OU_1_13.pdf
Author Kashiwada Yukio| Akiyama Koichi|
Abstract In order to make clear how the efflux angle changes in a small crankcase scavenged engine cylinder and in a large loop scavenged engine cylinder, the inlet flow pattern in the single cycle model cylinder has been observed by a high speed motion camera. In general, the scavenging air stream is not effluent in the designed direction of the scavenging port at comparatively slight opening, and the efflux angle changes in proportion to port opening advance. In a small crankcase scavenged engine cylinder, to keep the scavenging air stream in the direction of the scavenging port it is effective to incline the scavenging air passage between the crankcase and the cylinder, and to make thicker the cylinder wall where located scavenging port. In a large loop scavenged engine cylinder to coincide the scavenging air stream with the direction of the scavenging port in the early stage of the scavenging, it has an effect to set the guide plate the position of 1/2 at port height.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1966-03-31
Volume volume1
Issue issue1
Start Page 13
End Page 22
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307846
JaLCDOI 10.18926/15537
FullText URL Mem_Sch_Eng_OU_1_1.pdf
Author Honda Kazuo| Konaga Tetsuro|
Abstract In the field of mechanical engineering, the need for a simple but effective way of evaluating the fatigue strength and lifetime of structural materials is an important problem with which the design engineers have faced. Accordingly, a cunsiderable amount of investigations have been made in this field. However, the basic nature of fatigue damage and the conditions which lead to the initiation and propagation of fatigue cracks are not sufficiently understood. Nor any satisfactory method of assessing the exact state of fatigue damage has yet been found. X-ray diffraction technique is not a new as the method of experimental study, but has often been adopted for direct and non-destructive observations of change in the local structures of crystalline materials at fundamental research. X-ray technique is one of the most powerful means to investigate the changes of microscopic- structure due to external forces, considering the fatigue phenomena occur on the surface of materials. Accordingly, one of the authors have studied the relations of half-value breadth of X-ray diffraction lines, residual stresses and hardness and number of cycles of fatigue stresses in detail for various sorts of engineering metallic materials. In the results of a number of experiments, it has been found that the variation in half-value breadth showed very regular relation with number of stress cycles, the authors have reported that the lifetime of materials in fatigue could be predicted. Consequently, it needs to investigate whether or not this predicting method is fitted for alloy containg α and β phase, moreover, it is interesting to make clear the fatigue mechanism of such materials which are present two phases having the different yield stress and type of crystal structure.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1966-03-31
Volume volume1
Issue issue1
Start Page 1
End Page 12
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307488
JaLCDOI 10.18926/15536
Title Alternative A STUDY ON THE PHOSPHOR CONTENT IN MISASA SPA
FullText URL 006_001_003.pdf
Author Umemoto, Shunji|
Abstract The phosphor contents of well-water,spring-water and soil were measured semiquantitatively. The phosphor content is relatively high in the sampls from the thermal spring district than in that from the surrounding.
Publication Title 岡山大学温泉研究所報告
Published Date 1952-03
Volume volume6
Start Page 1
End Page 3
ISSN 0369-7142
language 日本語
File Version publisher
NAID 120002307782
JaLCDOI 10.18926/15535
Title Alternative FLOCCULATION VALUE OF MINERAL WATERS.
FullText URL 005_082_083.pdf
Author Ashizawa, Takashi|
Abstract Flocculation value of 24 mineral waters was measured with colloidal solution of iron hydroxide. There exists a negative correlation (r=-0.72, Fo=(r(2)(N-2))/(1-r(2)) =21.6 >F=8.10 n1=1 n2=20 α=0.01) between the logarithms of sulfate ion concentration of the mineral waters and their Flocculation value.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 82
End Page 83
ISSN 0369-7142
language 日本語
File Version publisher
NAID 120002307827
JaLCDOI 10.18926/15534
Title Alternative MICROANALYSIS OF ALUMINUM AND IRON.
FullText URL 005_076_081.pdf
Author Ashizawa, Takashi|
Abstract アルミニウムと鉄の満足な分離定量法は,現在知られていない.微量のアルミニウムの定量法としては,各種色素のレーキ生成による比色法もあるが,最も優れた方法はオキシン法である.鉄定量は専ら各種の比色法又は容量法に依っているが,微量の場合は実際にはロダン法が用いられている.食塩泉に存在 する様な,1l中数mg以下の,アルミニウム及び鉄の実用的な分析方法を確立する必要を感じ,従来法を改良し,満足な結果に到達した.鉄はロダン法又はサリチル酸法,アルミニウムはヘマトキシリン,又はアルミノン,オキシン法が用いられた.本法の特徴は,鉄をロダン錯塩としてアミルアルコールで完全に抽出し定量し,残液でアルミニウムをアルミノン,オキシン等で定量する一貫した方法であることにある.現在のアルミノン法は鉄の妨害のために実用化されていない.鉄の定量の際の弗素の影響は余り関心を持たれていないが,温泉水には著量の弗素を含むものがある.それでこの妨害を避けて,サリチル酸法に硝酸トリウムを用い,正確に,比色する方法を考案した.
Abstract Alternative To avoid the interference of iron in the determination of aluminum by oxin or aluminon the author extract the iron with amyl alcohol as complex thiocyanate. Then iron was determined by salycylic acid metbod. And by adding thorium nitrate the author succeeded to exclude the obstraction of fluorine. After the determination of iron, copper, zinc, nickel and cobalt can be estimated with Dithizone chromatographic method using the same sample extract.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 76
End Page 81
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307272
JaLCDOI 10.18926/15533
Title Alternative RELATION BETWEEN THE MOTTLED TOOTH, STRUMA AND FLUORINE CONTENT OF DRINKING WATER INVESTIGATION ON BOYS AND GIRLSLIVIING IN YOSIOKA HOT SPRING AND ITS VICINITY,TOTTORI PREFECTURE, JAPAN
FullText URL 005_064_075.pdf
Author Onda, Sakue|
Abstract In order to stady the relation between the mottled tooth, struma and fluorine content of drinking water, the author investigated the teeth and thyroid glands of school-boys and girls living in Yoshioka Hot Spring and its vicinity, Tottori Plefectue. Yoshioka Hot Spring is a simple thermal with high fluorine content (max. 5mg. per liter). The incidence of the mottled tooth was 51.5 per cent in average. A close relationship was observed between the morbidity of the mottled tooth and high fluorine content of drinking water. But the author noticed also the occurrence of the mottled tooth among the school-children living in the regions where the fluorine content of drinking water proved to be even less than o.1ppm., and the author emphasizes the possibility of the causal factors other tham fluoline. The palpability of thyroid gland was 78.4 per cent in average, but no significant relation was recognized between the struma and fluorine. Between the mottled tooth and struma, no relation was proved as significant, too.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 64
End Page 75
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307214
JaLCDOI 10.18926/15532
Title Alternative STUDIES OF THE RADIOACTIVE SPRINGS (XXIX) THE EFFECT OF FREQUENT THERMAL BATH ON BLOOD CATALASE
FullText URL 005_059_063.pdf
Author Morinaga, Hiroshi|
Abstract The author investigated the effect of frequent thermal bath on blood catalase in healthy persons, liver injured patients and rabbits. The blood catalase level of rabbits tends to increrease after a radioative thermal bath at a temperature of 42°-43℃ in " YAMADA-KU KYODO-YU " . but it tends to decrease after a thermal bath in the Labolatory, which Radon content is about one tenth of the former, namely 40-70×10(-10) Curie units per liter. By the repeated thermal baths of daily three times the blood catalase level of rabbit tends to fall lower after each bath. In healthy persons no remarkable change was shown in the initial blood catalase level by the frequent thermal baths of daily three times at 42°-43℃for 5 minutes. But in liver injured patients a gradual fall of initial level and a slow recovery were seen after each thermal bath.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 59
End Page 63
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 40017532397
JaLCDOI 10.18926/15531
Title Alternative STUDIES ON VITRIOL SPRINGS,(8) BLOOD CATALASE LEVEL AFTER THE INTERNAL USE oF VITRIOL WATERS.
FullText URL 005_057_058.pdf
Author Oshima, Yoshio|
Abstract After the internal use of 20-40 cc of Fujino or Yanahara mineral waters a rise in the iron, copper, nickel and cobalt content in blood and a slight fall in the bloodcatalase level were observed. No significant difference was proved between the effects of two vitriol waters.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 57
End Page 58
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307329
JaLCDOI 10.18926/15530
Title Alternative STUDIES ON VITRIOL SPRINGS,(7) IN-VITRO EFFECT OF VIIRIOl WATERS ON OXIDOREDUCTASE.
FullText URL 005_055_056.pdf
Author Oshima, Yoshio|
Abstract Fujino and Yanahara spring waters were used. The latter, is the strongest copper spring in Japan. Iron ion in Fujino mineral water is mainly ferric and in Yanahara mineral water mainly ferrous. Yanahara spring water promotes the action of oxidoreductase in milk and liver extract. It also promotes the action of succinic dehydrase in albino rat muscle. And this promoting action of spring water is inhibited by cyanide. Fujino is less active than Yanahara and Mitsuishi proved to be almost inactive.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 55
End Page 56
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307811
JaLCDOI 10.18926/15529
Title Alternative STUDIES ON THE VITRIOL SPRINGS. (6)
FullText URL 005_051_054.pdf
Author Ashizawa, Takashi|
Abstract a) Colorimetoric determnation of the minute amount of antimony and antimony contend of Yanahara Hot Spring. To 5cc of sample soln., not containing the second family other than antimony. add 0.2 cc of 10% polyvinyl alcohol aqueous solution. Adjast HCI eoncentration to approximately I. N. Add I cc of hydrogene sulfide solution and sbake. Then measure the reruting yellow or orange color by photometer. Antimony content of Yanahara Hot Spring was 0.1±0.03 g per liter by the above mentioned method. b) Quantitative determination of the free mineral acid. Precipitate iron and aluminium as complex fluorine salts and change the sulfate ion into alkali sulfate, so that it can not liberate free acid. Then titrate with alkali using phenol red as an indicator. c) Iron and coprer in thermal waters and minerals of Yanahara Hot Spring. Ferous ion content of Yanahara Hot Spring (60℃) was 14.6g per liter and its copper content was 0.44g per liter. both being the highest record in Japan. A green and a bluish green minerals ware found, crystalyzed near the Hot Sprig. The latter was apisanite (Cu(0.25) Fe(0.75) S0(4・8.8) H(2)O) and the former proved to be a pure melanterite (Fe S0(4).7H(2)O). d) A modified method to detect sulfides of the second family. Using zinc-amalgam the author succeeded to avoid the liberation of sulphur and to detect the yellowish or orange colored sulfides, such as ausenic, antimony or tin sulfide. e) Paper chromatography applied to the analysis of heavy metals in vitriol waters. 4 kinds of vitiol waters were investigated. Paper chromatography proved to be excellent in detecting the metals of the second family, such as tin, antimony, and ansenic.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 51
End Page 54
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307813
JaLCDOI 10.18926/15528
Title Alternative COLORIMETRIC DETERMINATION OF MAGNESIUM IN NATURAL WATERS
FullText URL 005_047_050.pdf
Author Ashizawa, Takashi|
Abstract Using dye reagents of Magneson Series, the author Succeeded to determine minute amount of magnesium in natural waters (0.0001-0.01g periiter) Colorimetrically. And with Complex salts of Cobalt and copper as Substitutive Standard color series a Simple, rapid and exact method Suitable for field work was devised.
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 47
End Page 50
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307507
JaLCDOI 10.18926/15527
FullText URL 005_044_046.pdf
Author Ashizawa, Takashi|
Publication Title 岡山大学温泉研究所報告
Published Date 1951-08
Volume volume5
Start Page 44
End Page 46
ISSN 0369-7142
Related Url http://eprints.lib.okayama-u.ac.jp/15926
language 日本語
File Version publisher
NAID 120002307521
JaLCDOI 10.18926/15525
Title Alternative THE MEMBRANE POTENTlAL OF THE LIVING HUMAN SKIN AND THE MINERALWATERS
FullText URL 004_049_053.pdf
Author Oshima, Yoshio|
Abstract The membrane potential difference with the living human skin between the physiological saline and the mineral waters was measured. The hypotonic mineral waters, that have a pH higher than the isoelectric point of human epidermis, showed a positive potential against the physiological saline. The membrane potential difference of these mineral waters against the physiological saline at the same temperature tends to increase by raising the water temperature. The acid waters showed either a positive or a negative potential against the physiological saline. The membrane potential difference between the mineral wates at room temperature and at the temperature raised above it is increased according to their temperature difference,
Publication Title 放射能泉研究所報告
Published Date 1951-03
Volume volume4
Start Page 49
End Page 53
language 日本語
File Version publisher
NAID 120002307611
JaLCDOI 10.18926/15524
Title Alternative A STUDY ON THE INCIDENCE OF STRUMA IN THE CENTRAL DISTRICT OF TOTTORI PREFECTURE, JAPAN
FullText URL 004_039_048.pdf
Author Onda, Sakue|
Publication Title 放射能泉研究所報告
Published Date 1951-03
Volume volume4
Start Page 39
End Page 48
language 日本語
File Version publisher
NAID 120002307541
JaLCDOI 10.18926/15523
Title Alternative STUDIES OF THE RAD10-ACTIVE SPRINGS (XXVIII). EFFECTS OF THE RADIO-ACTIVE THERMAL BATH ON CIRCULATION SYSTEM (1).
FullText URL 004_023_039.pdf
Author Onoda, Susumu|
Abstract The author investigated the changes in skin temperature, oral temperature, blood pressure, pulse rate, respiration rate and weight of body before and after a radio-active thermal bath in Misaswa, and compared the results with the corresponding changes after a plain water bath at a same temperature (43℃) with same duration (5min.). A rise in skin temperature after the thermal bath durated longer than after the control plain water bath. Changes in oral temperature did not correspond to the changes in skin temperature and to the suhjective warm feeling. Changes in the pulse pressure showed no significant difference between the radio-active thermal bath and plain water hath. But a more prolonged lowering of the minimal blood pressure was proved after a radio-active thermal bath than after a plain water bath at same temperature with same duration. The response in blood pressure to thermal bath was more marked in winter than in summer. A rise in pulse rate was recognized after all kinds of hot baths, but no difference was proved between them. A slight acceleration of respiration rate and a loss in weight were observed after hot bath at 43℃ for 5 minutes. But these effects were slighter after radio-active thermal bath than after plain water bath at same temperature and same duration.
Publication Title 放射能泉研究所報告
Published Date 1951-03
Volume volume4
Start Page 23
End Page 39
language 日本語
File Version publisher
NAID 120002307268
JaLCDOI 10.18926/15522
Title Alternative STUDIES OF THE RADIO-ACTIVE SPRINGS (XXV-XXVII)
FullText URL 004_013_023.pdf
Author Oshima, Yoshio|
Publication Title 放射能泉研究所報告
Published Date 1951-03
Volume volume4
Start Page 13
End Page 23
language 日本語
File Version publisher
NAID 120002307917