• Title/Summary/Keyword: One-pot

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Fishing Mechanism of Pots and their Modification 1. Behavior of Conger Eel, Astroconger myriaster, to the Bamboo and Plastic Pots (통발어구의 어획기구 및 개량에 관한 연구 1. 대통발과 플라스틱통발에 대한 붕장어의 행동)

  • KIM Dae-An;KO Kwan-Soh
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.20 no.4
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    • pp.341-347
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    • 1987

  • The behavior of conger eel, Astroconger myriaster (Brevoort), to the bamboo and plastic pots with baits was investigated alternately in two experimental water tanks. One of the pots being dropped on the tank bottom, the eels touched it to obtain the bait probably by their sense of smell, and increased rapidly in the number of touch to show a maximum within 30 minutes. But the touch was made mainly to the pot wall at which the bait was located and quite accidentally to the pot mouth. The eels touched the pot mouth retreated frequently without attempting to enter the pot and their entering was very hampered by the bamboo funnel constituting the pot mouth. However, a entering, if made, encouraged other touches and the touches ascribed other enterings. But, if 30 minutes elapsed, the number of touch decreased gradually and so the enterings were little made. The ability of pots attracting the eels into them was varied with their inclination to the tank bottom and the bait position in them. That is, the pot which was laid horizontally showed high ability of attracting in case in which the bait was fixed in the vicinity of its mouth. The pot, inclined by $30^{\circ}$ by lifting its tail and had a bait left free, showed almost equal ability to the horizontal pot with a bait in the vicinity of mouth. But the pot, inclined by $30^{\circ}$ by lifting its mouth and had a bait left free, showed a very low attracting. A comparison between the bamboo and plastic pots gave only that the entering of the eels became later several minutes in the latter.

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Influence of paper Mill Sludge Compost to Corn(Zea may L.) cultivated Soil(Incase of Inorganic Phosphorus) (옥수수(Zea may L.)재배 토양에서 제지슬러지퇴비의 시용효과: 무기태인산을 중심으로(II))

  • Lim, Hyun-Taek;Chang, Ki-Woon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.9 no.1
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    • pp.99-108
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    • 2001

  • The study was carried out to evaluate characteristics of inorganic phosphate fractions in cultivating soil with paper mill sludge comport(PMSC). The experiment were conducted in cultivating corn by a pot test. The place of the pot test was a plastic house. The pot size was 1/5000a and PMSC was added at rates of 0, 30, and 100 Mg/ha. The pot experiment was divided to two treatments, one in which corn was cultivated and the other which was not. The items of measurement was pH and inorganic phosphate fractions which were determined for the pot tests for 80 days. The results can be concluded as follows, pH increased depending on the higher rates of PMSC application to the soil during the Pot tests, because calcium content was high and contents of nutrient were high. When the application rates of PMSC were increased, Saloid-P and Fe-P decreased, while Al-P and Ca-P in soil increased during the pot tests. According to the increase of PMSC application rates, the growth and the yield of com significantly increased Such results seem to be associated with the higher nutrient level from PMSC application. Although uptake of phosphorus in corn decreased in the corn with increased application of the PMSC, phosphate deficiency didn't appear in the pot test.

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