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Volume 50 (1996)
- Issue 6 Pages 389-
- Issue 5 Pages 299-
- Issue 4 Pages 211-
- Issue 3 Pages 149-
- Issue 2 Pages 51-
- Issue 1 Pages 3-
Volume 50, Issue 5
Displaying 1-11 of 11 articles from this issue
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Shunya ISO1996 Volume 50 Issue 5 Pages 299-304
Published: 1996
Released on J-STAGE: February 19, 2013
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Shigeoki NAKAMURA, Chisei MURAYAMA1996 Volume 50 Issue 5 Pages 305-311
Published: 1996
Released on J-STAGE: February 19, 2013
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Tateki OZAWA1996 Volume 50 Issue 5 Pages 312-321
Published: 1996
Released on J-STAGE: February 19, 2013
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Masashi ONO1996 Volume 50 Issue 5 Pages 322-326
Published: 1996
Released on J-STAGE: February 19, 2013
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Kazutaka ISOBE1996 Volume 50 Issue 5 Pages 327-333
Published: 1996
Released on J-STAGE: February 19, 2013
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Tsukasa IMAZU1996 Volume 50 Issue 5 Pages 334-343
Published: 1996
Released on J-STAGE: February 19, 2013
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Jin-Sik LEE, Katsuya UESUGI, Thoru NAGAHIRO, Won-Hyung CHOI, Do-Hoon K ...1996 Volume 50 Issue 5 Pages 344-348
Published: 1996
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSA rapid preconcentration method based on solvent extraction is described for the determination of zinc in sea water using flame atomic absorption spectrophotometry. Micro amounts of zinc in the form of a 5-methylthiophen-2-aldehyde-4-phenyl-3-thiosemicarbazone complex were extracted from sea water in diisobutyl ketone (DIBK). Zinc is quantitatively separated and then concentrated from the chief ingredients of sea water, and the value of the recovery was more than 101.2% when artificial sea water was used. The concentration of zinc in coastal sea water was found to be 5.6-22.9μgl-1 using the proposed method.View full abstractDownload PDF (2991K) -
Izuru KAKUTA1996 Volume 50 Issue 5 Pages 349-355
Published: 1996
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSThe effect of temperature on the elemental composition of sagittae (otoliths) taken from the juvenile Japanese flounder Paralichthys olivaceus, reared at constant temperatures (9, 12, 15, 19, 22 and 25°C) for one month, was studied using particle induced X-ray emissions (PIXE). Several elements were detected in the otoliths; not only calcium (Ca), chloride (Cl), strontium (Sr) and potassium (K), but also iron (Fe), zinc (Zn), manganese (Mn) and copper (Cu). The PIXE technique proved to be an effective tool for performing multielement analysis in small fish otolith. The strontium-calcium (Sr/Ca) concentration ratios of lab-reared juvenile flounder were inversely proportional to the respective cultivating temperatures (body growth rate) between 12°C and 22°C. The Cl concentrations and the chloride-calcium (Cl/Ca) concentration ratios were inversely proportional to the respective culfivation temperatures between 9°C and 25°C. On the other band, the Zn concentrations and the zinc-calcium (Zn/Ca) concentration ratios were directly proportional to the cultivation temperatures within the same range. No significant changes in other element concentrations and each of these/Ca concentration ratios in the otoliths were found. These results indicate that there is it may be possible to use the relationship between the elemental composition of otoliths and the ambient temperature as a means of reconstructing the life history of this fish.View full abstractDownload PDF (5898K) -
Hiroyuki TO, Kenichi KAGIWADA1996 Volume 50 Issue 5 Pages 356-362
Published: 1996
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSWe have stadied the inhibitive properties of sodium chloride dihydrate precipitation and established a preventive method for caking at freezing temperature using these additives.
1) The solubility of sodium chloride decreased in proportion to the increase in concentration of the additives. This effect was significant since the hydration enthalpy also increased.
2) Sodium chloride dihydrate precipitates increased in proportion to the decrease in temperature. In particular, it showed a rapid rate of increase below -5°C.
3) Sodium chloride dihydrate precipitates decreased in proportion to the increase in concentration of the additives. This effect was significant since the hydration enthalpy also increased.
4) Caking at freezing temperature was prevented by the additives whose hydration enthalpy was greater than that of the sodium ion. This effect was significant since the hydration enthalpy also increased.View full abstractDownload PDF (4209K) -
Shoji MOTOMIZU, Mitsuko OSHIMA1996 Volume 50 Issue 5 Pages 363-377
Published: 1996
Released on J-STAGE: February 19, 2013
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Development of Texture and FlavorMorihiko SAKAGUCHI1996 Volume 50 Issue 5 Pages 378-381
Published: 1996
Released on J-STAGE: February 19, 2013
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