• Title/Summary/Keyword: receptacle

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Residue of Pesticides Carbendazim and Chlorpyrifos in Different Parts of Red Pepper (고추의 부위별 카벤다짐과 클로르피리포스의 잔류 양상)

  • Park, Hae-In;Hwang, Jae-Moon;Kim, Byung-Soo;Lee, Mi-Gyeong;Chol, Young-Wook;Lee, Min-Ho;Jeong, Jeong-Eun;Kim, Jeong-Han
    • The Korean Journal of Pesticide Science
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    • v.15 no.3
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    • pp.246-253
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    • 2011
  • This experiment was carried out to examine the residual amount variation of carbendazim and chlorpyrifos in fruit parts of red pepper according to the open field and/or the rain shelter house. It was shown higher residual amounts of agrochemicals in the field than the house condition at two hours (0 day) after chemical application, but it was shown higher residual amounts in the house at 5 days and 10 days. Although the residual amount in the field was higher than in the house at the beginning, the chemicals fast degraded in field condition. Carbendazim and chlorpyrifos remained as time passed in order of receptacle, but the residual amounts of two chemicals in leaf at $5^{th}$ day. Carbendazim and chlorpyrifos were lessened until 10 days after chemical application, and reduction rate were 19.1% and 66.4% in flesh, 45.2% and 62.3% in receptacle, and 41.6% and 72.0% in the stalk, respectively. The reduction rate at 15 days showed 31.1%, 75.3% in flesh, 43.5%, 81.7% in receptacle, and 47.7%, 82.8% in stalk, respectively. Therefore the reduction rate of carbendazim showed receptacle > stalk > flesh, and that of chlorpyrifos showed stalk > receptacle > flesh in order. The calculated half-life of carbendazim showed 29.6 days in flesh, 13.6 days in receptacle, and 16.0 days in stalk, but that of chlorpyrifos showed 8.3 days in flesh, 8.3 days in receptacle, and 6.3 days in stalk. In conclusion, the half-life of carbendazim was longer than that of chlorpyrifos in even part, and especially was longest in flesh part of fruit.

High-frequency Plant Regeneration from Cultured Flower Bud Receptacles of Allium hookeri L.

  • Koo, Ja Choon
    • Horticultural Science & Technology
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    • v.32 no.5
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    • pp.694-701
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    • 2014
  • Allium hookeri L. (Alliaceae family) is an important ethnomedicinal plant native to the Himalayan region of Asia. The aim of this research was to establish a high-frequency plant regeneration system for in vitro propagation of A. hookeri. Among the tissue types examined, receptacle explants derived from immature flower buds showed the highest regeneration rate of shoots ($93.33{\pm}4.63%$), roots ($76.67{\pm}7.85%$), and calli ($80.00{\pm}7.43%$) when cultured on Gamborg B5 (B5) medium containing $10{\mu}M$ 6-benzylaminopurine (BA) + $1{\mu}M$ naphthalene acetic acid (NAA), $0.5{\mu}M$ BA + $5{\mu}M$ NAA, and $1{\mu}M$ BA + $10{\mu}M$ NAA, respectively. Shoot multiplication was superior when cultured in liquid rather than on solid medium and relatively high concentrations of BA, ranging from 5 to $10{\mu}M$. Efficient bulblet formation following root induction from shoot clumps was achieved with culture in liquid B5 medium containing 7% (w/v) sucrose. Regenerated bulblets were successfully acclimatized to ex vitro conditions with a greater than 95% survival rate. By this method, a maximum of 62 plantlets per receptacle could be propagated within 9 weeks of initial culture. The in vitro propagation system established in this study will promote A. hookeri biotechnology, including large-scale production of healthy and aseptic clones, preserving parental genotypes with desirable traits, and genetic manipulation to enhance medicinal value.

A Field Study on the Standard of Electric Branch Circuit and Receptacle in Apartment (공동주택의 분기회로 및 콘센트 수 기준설정에 관한 조사연구)

  • 정지열;김채규;김호식
    • The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.5 no.2
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    • pp.67-76
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    • 1991
  • This study showes suitable number of branch circuit and receptacle in residential apartments and houses by surveying and analyzing using practic of consents and domestic electic machinery, layout of indoor furniture This results will offer optimum design of wiring equipment, increse saftety and convienience when residents use domestic electic machinery and interior wiring devices.

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Improvement of Power Consumption of Automatic Quiescent Power Cut-off Receptacle by Developing Latch Relay (래치릴레이 개발 및 적용을 통한 대기전력 자동 차단 콘센트의 효율 개선방안 고찰)

  • Kim, Ju-Chul;Lee, Joon-Ho;Kim, Jin-Tai;Kim, Sun-Gu;Lee, Sang-Joong
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.27 no.10
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    • pp.75-79
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    • 2013
  • The automatic quiescent power cut-off receptacles(QPCR from now on) have achieved a noticeable energy saving so far. The government is preparing a new code for wider promotion of the QPCRs. This paper presents a new QPCR that adopts the latch relay instead of the conventional coil-operated relay. Measurement results of the prototype have shown up to 0.22W improvement of quiescent power compared with existing products.

A study on the hazard of electric shock for 220V domestic receptacles (220V 가정용 콘센트에 대한 감전위험성 연구)

  • 한기붕;정세중;이대종
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.07a
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    • pp.671-674
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    • 2000
  • A children's electric shock accidents have broken out because children can easily insert sharp things in 220V receptacle holes. As the test result of pushing force, children's pushing force was about 2-4kg and the pushing force of sharp things was less than 2kg. Therefore, it is reason for electric shock that children's pushing force is large than pushing force of sharp things. We have measured insulation resistance for the receptacles of five companies during 50 weeks in humid condition. As these results, Insulation resistance for the receptacles of J. Co. had rapidly decreased with lapse of time. As the result for investigating the surface of receptacle by SEM and EDX, Al, Fe and Br, which weren't discovered at original form, were produced. Therefore, the receptacles of J. Co. should be the improved in the quality of insulating material because insulation resistance can be decreased in humid environment

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Somatic Embryogenesis from Various Parts of Muscari comosum var. plumosum

  • Xudong He;Ko Jeong-Ae;Choi Jeong-Ran;Kim Hyung-Moo;Kim Myung-Jun;Choi So-Ra;Kim Young-Gon;Kim Dong-Hee;Kim Hyun-Soon
    • Korean Journal of Plant Resources
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    • v.19 no.3
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    • pp.427-431
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    • 2006
  • In vitro high-frequency plant regeneration of Muscari comosum var. plumosum through somatic embryogenesis was obtained via two developmental pathways: direct embryos and multiple shoots regenerated from embryogenic callus. Flower bud with pedicel, receptacle, petal and ovary wall, floral stalk and leaf as explants were cultured in MS medium supplemented with various plant growth regulators. Embryos formed directly from pedicel, receptacle and floral stalk. Depending on explant sources, the optimal medium was MS medium supplemented with 0.2 mg/L IBA and 0.3 mg/L BA, 3.0 mg/L IBA and 3.0 mg/L BA, and MS-free medium for pedicel, receptacle, and floral stalk, respectively. Multiple shoots regenerated from embryogenic cal]i which was initiated from petal, ovary and leaf were observed in MS medium with different concentrations and combinations of hormone. The most suitable medium for each type of explant was 3.0 mg/L IBA and 3.0 mg/L BA(petal and ovary) and 5.0 mg/L IBA and 5.0 mg/L BA (leaf) Furthermore, the combination of 0.1 mg/L 2,4-D and 1.0 mg/L BA was also good for all sources of explants not only for direct embryo formation, but also, for embryogenic callus induction.

Chief Factors in the Quality of Western Food (서양요리 품질의 결정요인에 관한 연구)

  • 정진우
    • Culinary science and hospitality research
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    • v.7 no.3
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    • pp.275-294
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    • 2001
  • There have been many discussions on the importance and part of quality in the marketing field. It also has been an effort in the cooking field to understand how the quality, recognized by customers, influences customer satisfaction in the process of serving western food. This study is a theory about evaluation methods of western food. It can be summarized in three views as below especially with sensuous evaluation methods. First, it is decoration. Visual factors, such as a receptacle and the amount of food in it, the arrangement of food colors, gloss of food, steam arising of from food, additional garnishes on food should be harmonious. Second, it is a flavor. The factors like the taste and smell of food, and feeling of food in the mouth can be evaluated with the taste and the smell. Third, it is texture. It is considered with the sense of touch, the motor sensation in the mouth and the hearing sense. Especially the sense of touch involves feel of receptacle when it is hot or cold as well as feel of food. This study has been conducted for providing customers with higher-quality western food, which is based on a theoretical study about evaluation methods. During the study, the limit was found that there is no measuring instrument, since the study was restricted in a theoretical work. For more accurate research, the measuring instrument should be developed through the positive research.

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Characterization of the Intestinal Corynosoma strumosum (Phylum: Acanthocephala) from the Harbor Seal, Phoca largha, from the East Sea, Korea

  • Sangjin Ahn;Hyeon-Cheol Kim;Bae-keun Park
    • Journal of Veterinary Clinics
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    • v.40 no.4
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    • pp.314-320
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    • 2023
  • An acanthocephalan parasite, Corynosoma strumosum, was found in the intestine of harbor seal, Phoca largha, living in the East Sea, Korea. The probosci's hook and trunk spine patterns typical of the collected worms indicated it to be C. strumosum. The body lengths measured are 4.2-5.8 (4.9) mm in males and 5.3-6.8 (5.7) mm in females. The proboscis is bent ventrally, armed with 18 longitudinal rows of 9-13 hooks in males and 20 longitudinal rows of 11-13 hooks in females. The proboscis receptacle is double-walled with the robust trapezoidal neck being unarmed. The hind-trunk is pipe-shaped with posterior parallel sides. The characteristic hind trunk spines cover the anterior third of the ventral surface. The lemnisci are equal and slightly shorter than the double-walled proboscis receptacle, which is longer than the proboscis. This species is an acanthocephalan parasite reported for the first time in Korea.

달팽이(Acusta despecta sieboldiana) 정자낭의 미세구조

  • 정계헌
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.372-372
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    • 2003
  • 유폐류에서 자성생식기의 부속기관 중에는 정자낭(spermatheca) 또는 저정낭(seminal receptacle)이라고 부르는 특이한 구조물이 있다. 이는 질(vagina)로부터 시작한 긴 도관 즉 정자낭관(spermatheacal duct)을 가지고 있고 그 말단부에 구형의 주머니인 정자낭(spermatheaca)이 있어 마치 시계추처럼 생겼다. 본 연구는 국내에 가장 널리 서식하고 있는 달팽이의 정자낭과 그 도관의 미세구조를 밝혀 기능을 이해하기 위하여 수행되었다. (중략)

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