• 제목/요약/키워드: survival extension

검색결과 191건 처리시간 0.02초

긴날개여치 실내 대량 사육을 위한 발육 및 산란특성 분석 (Analysis of the Developmental and Ovipositional Characteristics for Interior Mass-Rearing of Gampsocleis ussuriensis Adelung)

  • 임주락;문형철;박나영;이상식;유영진
    • 한국응용곤충학회지
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    • 제58권4호
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    • pp.381-387
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    • 2019
  • 2017년부터 2019년까지 전북 부안지역에서 채집한 긴날개여치의 발육 및 산란특성을 조사하였다. 긴날개여치(Gampsocleis ussuriensis Adelung)는 저수지 주변 잡초가 우거져 있는 곳에서 주로 발견되었고, 야외에서는 성충이 7월 중순 출현하여 9월 상순까지 나타났다. 알 상태로 겨울을 보내고 이듬해 4월 상순부터 7월 중순까지 약충이 출현하는 것으로 나타났다. 실내에서는 4월 상순 이후 부화한 약충은 5회 탈피를 하고, 성충이 되었다. 긴날개여치 산란기간은 약 58일 정도 소요되었다. 암컷 한 마리당 총평균산란수는 124개였으며, 성충수명은 암컷 95.6일, 수컷 84.8일이었다. 산란매트로는 마사토와 코코피트를 7:3으로 섞은 것이 가장 좋았다. 온도별 발육기간은 24℃에서 64.1일로 가장 길었고, 온도가 높을수록 발육기간이 짧아지고, 생충률은 32℃에서 77.8%로 가장 좋았다. 긴날개여치 약충 사육밀도는 사육밀도가 높을수록 생존율은 떨어지고, 발육속도가 빨라지며, 영기별 탈피속도가 빨라지는 경향이었다.

시설오이에서 미끌애꽃노린재의 천적유지식물로서 4종 식물의 평가 (Evaluation of Four Plant Species as Potential Banker Plants to Support Predatory Orius laevigatus (Fieber) (Hemiptera: Anthocoridae) in Cucumber Plant Systems)

  • 최용석;이건우;이경주;나한정;황인수
    • 한국응용곤충학회지
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    • 제63권1호
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    • pp.25-32
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    • 2024
  • 꽃노랑총채벌레(Frankliniella occidentalis)와 오이총채벌레(Thrips palmi)는 경제적으로 오이의 중요한 해충이며 이들의 방제를 위해 사용되는 화학약제는 효과적일 수 있으나 생식용으로 소비되는 오이에서 자주 사용하는 것은 바람직하지 않다. 따라서, 이들의 방제를 위해 화학농약을 대체할 수 있는 천적인 미끌애꽃노린재(Orius laevigatus)의 방제효율을 증대시킬 수 있는 방법으로 미끌애꽃노린재의 천적유지식물을 선발하였다. 실험실 조건에서 4가지 식물종에 대한 미끌애꽃노린재 부화율, 출현율, 생존률, 생식력을 조사하였고 오이 재배시설 내에서 선발된 2종의 천적유지식물에 대하여 미끌애꽃노린재 밀도를 조사하였다. 미끌애꽃노린재 알 부화율은 채송화가 92%로 가장 높았고 출현율은 바질이 81.4%로 가장 높았으며, 생존률은 채송화와 바질이 각각 70.8%와 69.1%로 통계적 차이를 보이지 않았다. 미끌애꽃노린재 생식력과 산란기간은 모두 채송화가 각각 209.8개와 20.2일로 가장 좋았고 바질은 각각 160.2개와 15.8일이었다. 식물체 꽃의 개화시기는 화밀을 대체먹이로 하는 미끌애꽃노린재의 생존에 중요한 요소이기 때문에 채송화와 바질의 개화시기를 조사한 결과 채송화는 7월에서 10월 개화하는 반면 바질은 4월부터 9월까지 개화하였다. 시설 오이에 미끌애꽃노린재의 천적유지식물로 바질과 채송화를 투입하고 미끌애꽃노린재 밀도를 조사한 결과 바질이 투입된 곳에서 밀도가 높게 조사된 반면 채송화를 투입한 곳에서는 거의 보이지 않았다. 따라서, 바질은 미끌애꽃노린재의 천적유지식물로서 잠재적 가치가 가장 높았으며 총채벌레 방제를 위해 미끌애꽃노린재를 이용할 경우 바질을 천적유지식물로 동시에 사용한다면 미끌애꽃노린재의 생물적 방제효과에 대한 효력을 증대시킬 수 있을 것으로 기대된다.

'노(老) '의 의미 확장 양상과 인지적 기제

  • 채춘옥
    • 중국학논총
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    • 제69호
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    • pp.121-143
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    • 2021
  • '老' refers to the old man with the characteristics of being aged in the original meaning 'to be aged' (adjective), which is a metonymy of 'substituting the whole with a part'. In combination with nouns, '老' uses a lot of metaphorical expressions that are understood through animals closest to the attributes of people with aged characteristics, plants and objects. '老' can be extended to the meaning of 'the survival time, duration, recognition time, and existence time of a person, animal, plant, or object are long', or 'the survival time is over', which can be said to be a metonymy of 'substituting cause with result'. An experienced target respected by people on a positive level and a target with banal thoughts, habits, nature, and personality on the negative level can also be conceptualized and expressed as '老'.

BDNF Promotes Neurite Growth and Survival of Antennal Lobe Neurons from the Silk Moth Bombyx mori in vitro

  • Kim, Jin-Hee;Sung, Dong-Kyung;Park, Chan-Woo;Kim, Kang-Min;Park, Hun-Hee;Kim, Hak-Ryul;Lee, Bong-Hee
    • 한국잠사학회:학술대회논문집
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    • 한국잠사학회 2003년도 International Symposium of Silkworm/Insect Biotechnology and Annual Meeting of Korea Society of Sericultural Science
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    • pp.99-99
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    • 2003
  • Brain-derived neurotrophic factor (BDNF) induced a significant neurite extension of antennal lobe (AL) neurons from the silk moth Bombyx mori in culture on lamini/ concanavalin A-coated dishes, in comparison with smaller effect of 20-hydroxyecdy-sone (20-HE). But the effect fur neurite extension by 5-hydroxytryptamine (5-HT) could not be found. A significant increase in the number of new primary branches from the principal neurites of AL neurons was also shown in culture with BDNF and 5-HT, but not with 20-HE. (omitted)

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Pycnogenol attenuates the symptoms of immune dysfunction through restoring a cellular antioxidant status in low micronutrient-induced immune deficient mice

  • Lee, Jeongmin;Nam, Da-Eun;Kim, Ok-Kyung;Lee, Myung-Yul
    • Nutrition Research and Practice
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    • 제8권5호
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    • pp.533-538
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    • 2014
  • BACKGROUND/OBJECTIVES: We investigated the effect of Pycnogenol (Pyc) on survival and immune dysfunction of C57BL/6 mice induced by low micronutrient supplementation. MATERIALS/METHODS: Female C57/BL/6 mice were fed a diet containing 7.5% of the recommended amount of micronutrients for a period of 12 wks (immunological assay) and 18 wks (survival test). For immunological assay, lymphocyte proliferation, cytokine regulation, and hepatic oxidative status were determined. RESLUTS: Pyc supplementation with 50 and $100mg{\cdot}kg^{-1}{\cdot}bw{\cdot}d^{-1}$ resulted in partial extension of the median survival time. Pyc supplementation led to increased T and B cell response against mitogens and recovery of an abnormal shift of cytokine pattern designated by the decreased secretion of Th1 cytokine and increased secretion of Th2 cytokine. Hepatic vitamin E level was significantly decreased by micronutrient deficiency, in accordance with increased hepatic lipid peroxidation level. However, Pyc supplementation resulted in a dose-dependent reduction of hepatic lipid peroxidation, which may result from restoration of hepatic vitamin E level. CONCLUSION: Findings of this study suggest that Pyc supplementation ameliorates premature death by restoring immune dysfunction, such as increasing lymphocyte proliferation and regulation of cytokine release from helper T cells, which may result from the antioxidative ability of Pyc.

인삼 전용 유기질 퇴비제조 및 시용효과 (Poduction of Organic Compost to Exclusive use in a Ginseng)

  • 남윤규;이진일;한규흥
    • 유기물자원화
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    • 제10권1호
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    • pp.139-147
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    • 2002
  • In order to the development of a new organic compost to exclusive use in a ginseng, we conducted the study of the preparation of organic fertilizer and the application effect of organic fertilizer in cultivation of ginseng. The new organic compost was composed of dryed broad leaves of acorn 40%, puffed husks of rice 40% and organic material mixture 20%. The chemical properties of the organic compost shown that the values of the total nitrogen, available phosphate, pottasium, calcium, magnesium, organic matter and C/N ratio were $17g\;kg^{-1}$, $8g\;kg^{-1}$, $11g\;kg^{-1}$, $14g\;kg^{-1}$, $4g\;kg^{-1}$, $794g\;kg^{-1}$, and 26.7, respectivly. The application effect of organic compost in the cultivation of ginseng shown that survival ratio of above ground plant of ginseng was shown the high value than control, and the ratio of root rot and red colored root were decreased. The optimal amount of organic fertilizer for ginseng seedling was $24M/T\;ha^{-1}$. The chemical properties of the ferilized soil were analyzed.

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분주 근경 크기와 배지 종류가 고추냉이 생육에 미치는 영향 (Effect of Divided Rhizome Size and Medium Type on Growth of Wasabia japonica Matsum.)

  • 이용범;최기영;배종향;김정만
    • 생물환경조절학회지
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    • 제18권2호
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    • pp.137-141
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    • 2009
  • 분주 크기와 배지 종류가 고추냉이 생존율과 생육에 미치는 영향을 알아보고자 환경이 조절된 생장상에서 60일간 재배하였다. 수태로 감싼 근경 크기(직경) 5mm 이상 분주 묘의 생존율은 100%였으며, 생육(초장 12cm 내외, 엽수 $3{\sim}4$장)은 양호하였다. 생육 60일의 분주 묘는 초장 20cm 이상, 엽수가 $1{\sim}2$장 증가하였다. 루톤 분의제 처리는 생존율과 생육에 효과가 없었다. 배지 종류(마사, 난석)에 따른 직경 $5{\sim}10$mm 크기의 분주 묘를 담액 수경으로 재배하였을 때 83% 이상의 생존율을 보였으며 배지 종류에 따른 생육 차이는 없었다. 따라서 근경 크기 5mm 이상의 고추냉이 분주를 환경이 조절된 생장상에서 30일간 수경재배 방식으로 순화하여 고추냉이 건전 묘를 생산할 수 있다.

귀밑샘 암종에서 생존 예측을 위한 임상병리 인자 분석 및 머신러닝 모델의 구축 (Clinico-pathologic Factors and Machine Learning Algorithm for Survival Prediction in Parotid Gland Cancer)

  • 곽승민;김세헌;최은창;임재열;고윤우;박영민
    • 대한두경부종양학회지
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    • 제38권1호
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    • pp.17-24
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    • 2022
  • Background/Objectives: This study analyzed the prognostic significance of clinico-pathologic factors including comprehensive nodal factors in parotid gland cancers (PGCs) patients and constructed a survival prediction model for PGCs patients using machine learning techniques. Materials & Methods: A total of 131 PGCs patients were enrolled in the study. Results: There were 19 cases (14.5%) of lymph nodes (LNs) at the lower neck level and 43 cases (32.8%) involved multiple level LNs metastases. There were 2 cases (1.5%) of metastases to the contralateral LNs. Intraparotid LNs metastasis was observed in 6 cases (4.6%) and extranodal extension (ENE) findings were observed in 35 cases (26.7%). Lymphovascular invasion (LVI) and perineural invasion findings were observed in 42 cases (32.1%) and 49 cases (37.4%), respectively. Machine learning prediction models were constructed using clinico-pathologic factors including comprehensive nodal factors and Decision Tree and Stacking model showed the highest accuracy at 74% and 70% for predicting patient's survival. Conclusion: Lower level LNs metastasis and LNR have important prognostic significance for predicting disease recurrence and survival in PGCs patients. These two factors were used as important features for constructing machine learning prediction model. Our machine learning model could predict PGCs patient's survival with a considerable level of accuracy.

영어 '보다(see)' 구문에 나타나는 통사와 의미의 상호관련성 연구 (On the Study of the Interaction between Syntax and Semantics in See Verb Construction in English)

  • 김미자
    • 비교문화연구
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    • 제39권
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    • pp.329-354
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    • 2015
  • The major goals of this paper are to identify the degree into which the meanings of 'see' verb can be extended, focusing on the extended meanings shown in the expressions that denote our instinctive actions for survival, such as eating or drinking, etc., and to clarify the doubt on whether any syntactic pattern can be associated with the meaning in the process of meaning extension of 'see' verb. For doing this task, this paper picked out 2,000 examples randomly from COCA (Corpus of Contemporary American English), in which the verb 'see' is used. This paper classified the sentences into thirteen different sentence types, according to the syntactic patterns. This research showed that these thirteen syntactic types lead us to figure out the process of the meaning extension of the verb 'see'. With this result, this paper made an attempt to provide the four steps toward the meaning extension of verb 'see'. The verb 'see' in the first step denotes the meaning of purely seeing the visualized objects. This verb in the second step expresses the shifted function, under which the agent in the subject position takes the seeing action as a secondary task in order to carry out other main task. The verb in the third step denotes the extended meanings irrelevant to the seeing action, because the sentences on this step do not contain any visualized objects. In the last step this verb functions as conventional implicature whose meaning does not contribute to the whole meaning of a sentence. In addition, this paper identified that the syntactic properties are deeply associated with the process of meaning extension of the verb 'see', and tried to formalize this relationship between the syntax and semantics within the framework of Construction Grammar based on A. Goldberg.

논토양에서 비닐하우스를 이용한 재배방법이 인삼의 수량 및 품질에 미치는 영향 (Effect of Cultivation Using Plastic-Film House on Yield and Quality of Ginseng in Paddy Field)

  • 김동원;김종엽;유동현;김창수;김희준;박종숙;김정만;최동칠;오남기
    • 한국약용작물학회지
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    • 제22권3호
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    • pp.210-216
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    • 2014
  • The average and maximum temperature were $29.5^{\circ}C$ and $33.2^{\circ}C$ at 2:00 p.m. respectively, in the plastic-film house covered with shade net, and both of temperature were lower $0.6^{\circ}C$ and $1.3^{\circ}C$ than those of conventional shade. Light transmittance was 14% in the plastic-film house, while 9.9% in conventional shade during growing season from May to October. Withering time of aboveground part was on October 3rd in conventional shade with 60% of withering leaf, while it was on November 10th with 3.7% of withering leaf in the plastic-film house, about 40 days longer survival. The main disease incidence were 15% of anthracnose, 17% of leaf spot, 5% of phytophthora blight and 3% of gray mold in the conventional shade, while 0 ~ 0.1% disease incidence and 95% of emergence rate in the plastic-film house. The growth in the aboveground and underground part of ginseng was totally better, particularly characteristics affecting yield such as root length, main root length and diameter in the plastic-film house. The fresh weight was increased by 128% compared to the conventional shade and harvested roots per $3.3m^2$ were 36 roots in the conventional shade and 58 roots in the plastic-film house and futhermore yield per $3.3m^2$ was increased by 216% compared to the conventional shade. As covering materials, the rice straw in the plastic-film house was excellent. The ginsenoside contents affecting the quality of ginseng were higher in the plastic-film house indicating 0.333% of Rg1, 0.672% of Rb1, 0.730% of Rc and rate of red rusty root was less than 4.0 ~ 6.1%. Above the results, the quality of ginseng grown in the plastic-film house covered with shade net was improved than that of the conventional shade.