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Volume 51, Issue 1
Displaying 1-9 of 9 articles from this issue
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Hideo TOGANO1997 Volume 51 Issue 1 Pages 3-11
Published: 1997
Released on J-STAGE: February 19, 2013
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Hitoshi SHINDO1997 Volume 51 Issue 1 Pages 12-19
Published: 1997
Released on J-STAGE: February 19, 2013
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Takanobu SUGO1997 Volume 51 Issue 1 Pages 20-27
Published: 1997
Released on J-STAGE: February 19, 2013
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Silke NIEHÖRSTER, Marco MATTOS, Joachim ULRICH1997 Volume 51 Issue 1 Pages 28-33
Published: 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSA modelling procedure is presented to predict the habit change of organic crystals influenced by additives. It is illustrated for a structurally rather simple host molecule, caprolactam. The modelling procedure gives good results compared to experiments. The experimental section shows that the additive concentration needed to achieve the predicted habit change is far below 10wt%.View full abstractDownload PDF (4339K) -
Haruo UEHARA, Yasuyuki IKEGAMI, Tsutomu NAKAOKA, Toshiharu HIROTA1997 Volume 51 Issue 1 Pages 34-42
Published: 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSIn this paper, an experimental study of spray flash evaporation is carried out for the OTEC plant using an integrated hybrid OTEC cycle and desalination. Superheated water at temperatues of 24, 30, 40°C are injected into a low pressure chamber through cylindrical nozzles.
The nozzles used are made of stainless tubing with internal diameters of 10.0, 15.0, 20.0mm and a length of 81.3mm. The temperature of the superheated water in the flash chamber is measured by 26 thermistors. The mean velocity of the superheated water varies from 0.89 to 4.46m/s. An empirical equation for predicting the non-equilibrium temperature difference is obtained. By using this equation, designers will be able to obtain easily the non-equilibrium temperature difference and the rate of fresh water.View full abstractDownload PDF (6473K) -
Toshinori KOJIMA, Kunio HORIUCHI1997 Volume 51 Issue 1 Pages 43-50
Published: 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSOceanic fertilization is one countermeasure against the global warming problem. Fertilizing the ocean with nutrients, such as nitrate and phosphate, is expected to promote the propagation of plant biota, leading to a decrease in the surface ocean partial pressure of CO2, thus drawing CO2 from the atmosphere.
In the present study, we evaluated the effective fraction of the nutrients sprinkled on to the ocean by means of a diffusion model that takes into consideration the horizontal diffusion of nutrients and organic matter in the ocean, and nutrient assimilation by plant biota. We also evaluated energy of transporting fertilizers of N and P by ship to optimize the fertilization of the ocean. The nutrients distributed by ship are diffused in the surface of the sea with assimilation by plant biota. When nutrients equivalent to 1/500 of the accumulated amount of CO2 in the atmosphere were distributed within a rudius of 7.1-100 km less than 0.01%of the nutrients were found to be transferred to the deep ocean without assimilation. The energy study also indicated that the amount of CO2 produced from the transportation process was about 0.23% of the amount expected to be absorbed by the ocean from the atmosphere.View full abstractDownload PDF (5961K) -
Izuru KAKUTA, Toshio SATO, Akihiro KAWAGUCHI1997 Volume 51 Issue 1 Pages 51-57
Published: 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSThe effect of bovine lactoferrin (0.2mg, 2mg, 20mg, 200mg/kg boby weight/day) on promoting the amount of mucus secreted on the body epidermis of several species of juvenile marine fish, such as yellowtail (Seriola quinqueradiata), red sea bream (Pagrus major), the Japanese flounder (Paralichthys olivaceus), rockfish (Sebastes inermis), and common goby (Acanthogobius flavimanus) was studied at 20°C for a period of 12 days. In the lactoferrin-treated groups (2mg and 200mg/kg body weight/day), mortality decreased slightly. The amount of protein secreted on the epidermis was measured as the index of the amount of skin mucus. The amount of protein secreted on the epidermis of the fish at the start of the experiment (initial control) was as follows: 1.47±0.25μg/mm2 for yellowtail, 1.73±0.24μg/mm2 for red sea bream, 1.54±0.27μg/mm2 for Japanese flounder, 1.69±0.34μg/mm2 for rockfish and 1.45±0.31μg/mm2 for common goby. Oral administration of lactoferrin at 20mg and 200mg/kg body weight/day resulted in increased mucus production within 6days. The amount of skin mucus increased significantly in the fish fed with lactoferrin at 2mg/kg body weight/day after 9 or 12days. Increased secretion of mucus on the epidermis was also observed in the red sea bream that was administrated lactoferrin at 0.2mg/kg body weight/day after 12days. In the red sea bream and other four species, the maximum values for the amount of skin mucus for the fish that were administrated lactoferrin were about 2times and 1.4 to 1.7times of those of the control, respectively. Among the species used in this experiment, the promotive effect of lactoferrin on the amount of mucus secreted on the body epidermis was most remarkable for the red sea bream, followed by Japanese flounder, common goby, yellowtail, and rockfish in that orderView full abstractDownload PDF (6511K) -
K. Ishihara, M. Kimura, T. Shibayama, Y. Horibe, K. Matsunaga1997 Volume 51 Issue 1 Pages 58-60
Published: 1997
Released on J-STAGE: February 19, 2013
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Principle and Feature of BiosensorsShunichi UCHIYAMA1997 Volume 51 Issue 1 Pages 61-65
Published: 1997
Released on J-STAGE: February 19, 2013
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