• Title/Summary/Keyword: 피해율

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여성 흡연

  • KOREA ASSOCIATION OF HEALTH PROMOTION
    • 건강소식
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    • v.28 no.4 s.305
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    • pp.28-29
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    • 2004
  • 과거 담배가 남성의 전유물로 여겨지던 시절에는 여성의 흡연율이 전반적으로 대단히 낮았다. 그러나 담배로 인한 폐해가 늘어나고, 담배의 해로움에 대한 연구결과들이 보고되면서 남성의 흡연율은 선진국을 시작으로 감소추세에 있지만, 여성의 흡연율은 세계적으로 급속한 증가추세에 있다. 유교 문화권에 속해 있는 우리나라의 경우, 여성 흡연율이 아직 그렇게 높은 편은 아니지만, 1990년대에 들어서면서 젊은 여성으로부터 급속하게 증가하고 있기 때문에 이에 대해서 심각한 고민과 적극적인 금연운동이 필요한 상황이다. 여성은 같은 양의 담배를 피워도 남성보다 건강상의 피해를 보는 정도가 더 심하다는 연구 결과 들이 많다. 여기에 덧붙여서 최근의 연구 또한 흡연하는 여성이 담배를 끊으려고 할 때 남성보다 더 끊기 어렵다고 보고하고 있다. 금연이라는 것이 원래 쉬운 것은 아니지만, 여성에게 특히 더 어려운 이유가 무엇일까?

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한국의 육계질병 발생현황과 대책

  • 김선중
    • Korean Journal of Poultry Science
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    • v.13 no.1
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    • pp.131-140
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    • 1986
  • 브로일러 계군에서 질병으로 인한 피해를 파악하는데는 어느 분야보다도 자료의 부족을 절감하게 된다. 필자가 파악하기로는 몇개 사료회사에서 사료의 질을 파악하는 방편의 일환으로 생존율을 조사하고 있으나 자료를 얻기가 쉽지 않고 또한 자료를 구한다 치더라도 조사대상 농장의 전반적인 사양관리상의 수준 등을 고려할 때 그것이 국내에서의 브로일러의 생존율을 대표하기보다 왜곡된 자료일 가능성이 많다. 그래도 유일하게 신빙성이 있는 자료는 가축위생연구소와 대학에서 실시하고 있는 가금질병 진단써비스 자료이다. (중략)

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담배와 건강 - 흡연과 청소년

  • Jeong, Yu-Seok
    • The Science & Technology
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    • v.35 no.5 s.396
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    • pp.66-69
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    • 2002
  • 남고 3년생 흡연율 미국, 일본보다 크게 높아 세포 분열 왕성한 성장기여서 피해 심각

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아플라톡신(Aflatoxin)의 독성에 대하여

  • 황원식
    • KOREAN POULTRY JOURNAL
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    • v.20 no.2 s.220
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    • pp.58-60
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    • 1988
  • '아플라톡신의 보편적인 중독증상으로는 가축의 성장율과 사료효율이 떨어지다가 심하면 폐사하게 되는데 어린 가축일수록 피해가 크다'

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Influence of Rice Water Weevil (Lissorhoptrus oryzophilus) Damage on Growth and Grain Quality in Rice (벼물바구미 피해정도가 벼 생육 및 미질에 미치는 영향)

  • 박경배;손길만
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.35 no.4
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    • pp.370-374
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    • 1990
  • A field experiment was conducted to investigate the influence of water weevil damage on growth and grain guality in rice. Plant height was shortened, number of tillers per hill decreased and maximum tillering stage delayed in damaged field by rice water weevil. Heading date was delayed by 1-2days, culm lenght shortened, panicle lengthened, number of panicles decreaced, number of panicles per spikelet increased, ripened grain ratio decreased in damaged field by rice water weevil. Yield per 10a was decreased 4-22% in damaged field compared with that in undamaged field by rice water weevil, yield loss in late transplanting (June 23) was larger than that in early transplanting (May 20). Imperfect kerml rice, especially green kernel rice, was increased in damaged field by rice water weevil.

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Relationships between Damaged Bite of Ears and Heading Time and Position of Punctured Leaves by the Rice Stem Maggot, Chlorops oryzae Matsumura, in the Second Generation (벼줄기굴파리의 제 2화기에 있어서 이삭의 피해위치와 출수기 및 공흔엽위와의 관계)

  • Kim Ki Whang
    • Korean journal of applied entomology
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    • v.21 no.4 s.53
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    • pp.175-178
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    • 1982
  • Field studies on the damage type of rice plants by the rice stem maggot in the second generation were conducted at Yong-in, Gyonggi Province, in 1982. Rate of damaged ears and the number of punctured leaves were higher in Tongil line than Japonica line. Early heading cultivars usually had bottom-damaged ears and on the contrary late heading cultivars had upper?damaged ears. In Tongil line, many of the upper-damaged or middle-damaged ears had punctured-flag leaves and less first leaves with punctures, but most of the bottom-damaged ears had not punctured-leaves. When matured, the larvae moved up to the upper part of stem and pupated on the upper and inner part of leaf-sheath of flag or first leaves.

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Effects of Submergency due to Heavy Rains on the Yield of Paddy (수도의 관수피해에 관한 조사연구)

  • Min-Shin Cho;Won-Sik Kim;Hoo-Seok Cheon;Jin-Gu Lee
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.12
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    • pp.63-69
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    • 1972
  • There was a concentrated heavy rain resulted in 450mm of precipitation from Aug. 18 and 19, 1972. Almost all the paddy grown in the main plain areas of KimPo, Bu Cheon and Pyong Taek(N. L. $37^{\circ}$00'98'$-37^{\circ}$30'56", Long. $126^{\circ}$45'99"$-127^{\circ}$55'92"E) have been damaged of submergency. The effects of the different degrees of submergency in different growth stages of paddy, on the yield of paddy, rates of fertilization, maturity and degree of heading have been observed, and may be summarized as follows. (1) When the paddy was damaged due to submergency at the heading stage, a) on the basis of normal paddy, the yield of paddy may be expected about 67,57,40,9 and 6% with the submerged periods of 0.5, 1. 0, 2.0, 3.0 and 4.0 days, respectively, and a significant-negative correlation was found between the periods of submergency and the yields. b) As in the yield of paddy, rapid decreases in the rates of fertilizations and maturities of paddy were found as the submerged periods are increased. When the submerged periods are 0.5, 1.0, 2.0, 3.0 and 4.0 days, the corresponding rates of fertilizations and maturities observed are 89 and 88,83 and 78,52 and 40,24 and 19, and 12 and 9%, respectively, showing significant negrative correlations. c) Considerable decreases of the degree of heading were found as the submerged periods are increased. resulted in a significant negative correlation at 1% level between the degree of heading and submerged periods. (2) When the paddy plants were under submergency just before heading, the damage was found to be less than that at heading stage. The yields were 86,82,60,36 and 10%, as compared with the normal yield, with 0.5, 1.0, 2.0, 3.0 and 4.0 days of the submerged periods. (3) When the paddy was under the submergency at the mid-stage of head sprouting, its damage was severer than that of just before heading stage. The yields of paddy under the different submerged periods, 0.5, 1.0, 2.0, 3.0 and 4.0 days, were 79, 64, 34 and 6%, respectively, of the normal yields. normal yields.

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