• Title/Summary/Keyword: 전염

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Transmissible Spongiform Encephalopathies (종설 : 동물의 전염성 해면형 뇌증)

  • 강영배;권창희;조상래;이재진
    • Journal of the korean veterinary medical association
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    • v.32 no.4
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    • pp.206-219
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    • 1996
  • 동물의 전염성 해면형 뇌증에는 양과 염소의 스크래피, 사슴과 엘크의 만성소모형, 밍크의 전염성 밍크 뇌증, 소 및 소과 야생동물의 소 해면형 뇌증 그리고 고양이의 고양이 해면형 뇌증등이 알려져 있다. 전염성 해면형 뇌증의 원인은 알려져 있지 않으며, 스트레인간의 차이는 숙주의 프리온 유전자에 있어서의 대립유전자의 차이에 의존되는 것으로 추정되고 있다. 이러한 동물의 전염성 해면형 뇌증들은 우리나라에서의 발생보고가 없는 해외 가축전염병이며 현재 영국에서 문제되고 있는 소 해면형 뇌증 즉 일명 광우병은 영국에서 1986년 최초로 확인된 새로운 가축전염병으로서 사람의 크로이츠휄트-야콥병과의 어떤 연관 가능성 때문에 수의학계의 관심의 대상이 되고 있는 질병이다. 영국정부 보건장관 스티픈 도렐은 최근(1996년 3월 20일)에 과거 10년 동안 영국의 소에 감염되어 온 소 해면형 뇌증이 사람의 희귀한 뇌 질환인 크로이츠휄트-야콥병의 새로운 스트레인과 관련성이 있는 증거가 있을 수 있는 것으로 과학자문위원회가 믿고 있다고, 영국하원에서 보고한 바 있다. 한편, 영국의 농업장관 더글러스 호그는 영국에서 30개월 이상된 소를 도살할 때에는 모든 뼈를 제거하여야 하며, 모든 포유동물의 조직은 농업용 사료로 사용해서는 아니된다는 새로운 규정을 공표하였다. 그러나 영국의 쇠고기는 안심하고 먹을 수 있다고 발표하면서 만일 문제가 된다면, 영국에서 사육하는 1천 1백만 마리의 소를 전부 도살할 용의가 있다고 하였다. 이러한 영국정부 견해는 다음 날 CNN News 등 세계 각 매스컴을 통하여 보도되었으며, 아직까지 과학적인 증거가 확립된 바는 없지만, 수의학이나 의학적인 사실 확인의 여부를 떠나, 사회 경제적인 문제로 큰 놀라움과 많은 의문사항을 남겨둔 채, 영국산 소와 쇠고기의 수입금지 조치 등 국제적인 문제로 확대되었다. 본편에서는 동물의 전염성 해면형 뇌증에 대하여 종합적으로 고찰해 보고자 한다.

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Active Video Watermarking Technique for Infectious Information Hiding System (전염성 정보은닉 시스템을 위한 능동형 비디오 워터마킹 기법)

  • Jang, Bong-Joo;Lee, Suk-Hwan;Kwon, Ki-Ryong
    • Journal of Korea Multimedia Society
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    • v.15 no.8
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    • pp.1017-1030
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    • 2012
  • Most watermarking schemes for video contents protection have been studied to increase watermark's robustness and invisibility against such compressions and many kinds of signal processing after embedding copyright information to the original contents. This paper proposes an active watermarking that infect watermark to contents in the video decoding process using embedded infectious watermark and control signals from a video encoder side. To achieve this algorithm, we design a kernel based watermarking in video encoder side that is possible to recover the original contents and watermark in watermark detection procedure perfectly. And then, by reversible de-watermarking in video decoder side, we design the active watermark infection method using detected watermark and control signal. This means that our system can provide secure re-distributions of video contents without any quality degration and watermark bit error against transcoding or re-encoding processing. By experimental results, we confirmed that the embedded watermark was infected by video contents and codec perfectly without any declines of compression ratio and video quality.

Field Spread of Soy bean Mosaic Virus Strains (콩모자익바이러스 계통의 포장전염)

  • Cho Eui Kyoo;Goodman Robert M.
    • Korean journal of applied entomology
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    • v.21 no.2 s.51
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    • pp.53-60
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    • 1982
  • Isolates of soybean mosaic virus (SMV) strains classified based on virulence in silt resistant soybean cultivars caused the same reactions in soybean cultivars used as differentials as those obtained by sap inoculations to the same cultivars. Five species of aphids (Myzus persicae SULZ., Aphis craccivora KOCH, Aphis citricola VAN., Rhopalosiphum maidis FIT., End R. padi L.) were able to transmit each of SMV strains. However, R. maidis and R. padi were inefficient vectors for transmission of SMV strain G3. Spread if four SMV strains (G2, G3, G6, and G7) was monitored in the field from sapinoculated plants in a one meter row of Williams soybeans (source plants) to plants in an adjacent row of Williams 80cm away (test plants). Test plants wert downwind from the source plants. A complete block design was used. Spread of strain G6 was significantly greater than that of other three strains. Two hundred six aphids were collected from June 27, 1979 to August 2, 1979 in the same field. A. citricola was the mist prevalent, comprising $68\%$ of the total aphids. Yields of Williams inoculated with each strain were also compared. Yields were the least from plants inoculated with strain G2 following G6, G3, and G7 in that order.

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MR Imaging Measurement of the Femoral Anteversional Angle as a PACS Image Viewer (MR 영상에서의 PACS Image Viewer를 이용한 대퇴골 전염각 측정)

  • Kweon, Dae-Cheol;Yang, Sung-Hwan;Park, Peom
    • Journal of radiological science and technology
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    • v.26 no.1
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    • pp.83-89
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    • 2003
  • The accurate measurement of the femoral anteversion is very important to the practice of orthopedic and osteotomy. It is measured by means of the axis of head and neck of the femur and the knee axis. At the present time, widely used computed tomography method of measuring anteversion on femoral necks of patients. Measurement by the manual method and image viewer of computed tomography to determine the anteversion of femoral head were carried out on both femurs. In September and October 2002, 5 patients 28 to 36 years of age were randomly selected from Seoul National University Hospital. The purpose of this paper was to introduce a new method to measure femoral anteversion angle utilizing PACS image viewer program in the MR imaging. Significant difference was observed between the right and left side the image viewer measurement of femoral anteversion. In conclusion, MR imaging very usefulness in the measured the angle of the femoral anteversion.

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Mosaic disease of black locust(Robinia pseudoacacia L.) I. Symptom and transmission by grafting (아까시나무모자이크병에 관한 연구 I. 병징 및 접목전염)

  • Kim Chong Jin
    • Korean journal of applied entomology
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    • v.3
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    • pp.1-5
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    • 1964
  • Symptom of the mosaic disease of black locust which is presently widespread in Korea was observed and transmission of the disease was investigated by means of grafting Since its symptom was typically mosaic and its transmission was easily accomplished, the disease was considered to be caused by a virus. In investigation of transmission by grafting, it was found out that the discase was easily transmitted in both of the following cases, i. e., healthy seedlings grafted with diseased scions and diseased roots with healthy scions. In the healthy seedlings plus diseased scions grafting, some grafted seedlings were purposedly deprived of the diseased scions after, a certain length of time(10∼30 days), while some were left grafted. The former case showed much higher transmission rate than the latter case, but no fluctuation in rate of transmission by the length of contact period(10-30 days) was recognized. And even when the union between stock and diseased scion by callusing was not successful, the transmission was withnesed. On the basis of the symptom, transmission by grafting, and possibility of transmission by sap inoculation(not published yet), it is supposed that the mosaic virus belongs to the group of the black locust mosaic virus that has been reported in southeastern Europe by Atanasoff(1935) and Milinko et al(1961). It is very likely that the witches' broom of black locust recorded by Myung-O Kim et al(1961) in Korea is the mosaic disease.

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Emotional Contagion as an Eliciting Factor of Altruistic Behavior: Moderating Effects by Culture (이타행동의 유발요인으로서 정서전염: 문화변인의 조절효과)

  • Jungsik Kim;Wan-Suk Gim
    • Korean Journal of Culture and Social Issue
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    • v.13 no.2
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    • pp.55-76
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    • 2007
  • This study investigated the relationship between emotional contagion and altruistic behaviors and also examined the moderating effect of self-construals(independent and interdependent self) in this relationship. It was hypothesized that the emotional expression of people in need would be caught by others through automatic mimicry, that emotional information would be internalized through the facial-feedback process and that the transferred emotion would eventually result in a motive to call for altruistic behaviors. In Study 1, participants watched a video clip about a disabled student reporting difficulties in school life but showing facial expression opposite to the contents of message to separate emotional contagion and empathy. Participants' decision to participate in voluntary works for the disabled student was measured. As a result, it was found that the more participants experienced emotional contagion, the more they participated in altruistic behaviors. Study 2 measured the vulnerability to emotional contagion, actual experiences of altruistic behaviors, and self-construals. The results of hierarchical regression showed that interdependent self moderated the influence of emotional contagion on altruistic behaviors whereas independent self moderated the relationship in an opposite direction. The implications of emotion and altruistic behaviors in human evolution process are discussed.

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벼 종자소득 어떤 병해를 막을수 있나 - 기계이앙 상자육묘 증가로 종자전염병 발생 늘어

  • 이두형
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.9 no.2
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    • pp.66-73
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    • 1988
  • 우리나라에서 조사된 벼의 종자전염성 곰팡이는 35종이나 된다. 벼의 종자는 이들 병원체에 의해 감염되어 있다. 종자소득을 실시하면 모잘록병은 물론 도열병, 깨씨무늬병, 키다리병, 이삭마름병등 종자전염성 병의 발생을 미리 막을 수 있다.

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가족과의 생활시 유의사항 -감염가족의 혈액이나 체액에 노출되지 않도록 해야-

  • 김경미
    • RED RIBBON
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    • s.58
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    • pp.8-11
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    • 2004
  • HIV는 주로 성접촉을 통해 전염된다는 사실을 대부분 알고 있지만 막상 가족 중 한 사람이 HIV에 감염되었다고 했을 때 어떻게 해야 하는지 당황하는 경우가 많다. 일상적인 접촉으로는 전염되지 않는다는 피상적인 정보는 알고 있지만 국을 같이 떠먹고 세탁물을 함께 넣고 빨아도 되는지, 감염된 가족의 식기는 항상 소독을 해두어야 하는지 모든 것이 궁금할 것이다.

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주의해야 할 가을철 질환

  • 김대현
    • 보건세계
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    • v.51 no.10 s.578
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    • pp.22-24
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    • 2004
  • 무더운 여름 뒤에 오는 쾌적한 가을철에는 전염성 질환이 줄어들고 건강 유지가 비교적 쉽다. 그러나 야외 나들이 기회가 많아져 뱀이나 벌, 해충에 물리는 일이 많고 마른풀이나 잡초를 통해 전염되는 신증후(유행성)출혈열, 쯔쯔가무시증, 렙토스피라증 같은 `급성 열성 풍토병`이 가을철에 드물지 않게 생긴다. 가을철에 주의해야 할 질환과 치료법을 알아본다.

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전염병 예방관리

  • Yang, Eun-Ju
    • 학교보건
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    • s.22
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    • pp.126-138
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    • 1999
  • 전염성 질환의 발생이 계속 감소되어 왔음에도 불구하고, 최근 우리나라 일부 지역에서 전염성 질환이 산발적으로 발생하고 있으며, 특히 학교 급식의 확대 실시에 따른 학교에서의 세균성 이질 등 집단 환자 발생의 빈도가 예년보다 증가되고 있는 실정을 감안할 때, 전염병 관리에 대한 각별한 주의가 요구된다. 따라서 학교보건 관계자가 전염병 발생의 역학적 특성을 이해하고, 이들 질환을 관리하는 데 도움을 주기 위해, 전염병 및 식중독 예방에 대해 간단히 기술하였다.

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