• Title/Summary/Keyword: 감염율

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Relationship between Entomopathogenic Nematode and Entomopathogenic Fungus, Beauveria brongniartii

  • 추호렬;김형환;이동운;하판정;이상명;이태우
    • Asian Journal of Turfgrass Science
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    • v.12 no.2
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    • pp.127-140
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    • 1998
  • 곤충병원성 선충의 이용 효율을 높이기 위하여 곤충병원성 선충 상호간 또는 선충과 곤충병원성 곰팡이와의 상호관계를 알아보았다. Steinernema glaseri는 기주의 무게에 따라 성충수에서는 차이가 없었으나 침입태 유충수에서는 차이가 있었다. 선충의 접종 농도에 따른 침입 발육된 성충수는 기주당 20마리 이하의 접종에서는 차이를 보였으나 40마리 이상 1,000마리 접종구에서는 차이가 없었고, 증식된 유충수도 기주당 1,000마리 접종구에서 현저히 적은 것을 제외하고는 차이가 없었다. 동일 기주에서의 선충 상호간 관계에서는 steinernematid 선충에 의한 기주 치사율이 heterorhabditid 선충에 의한 것보다 높았다. 즉, 서로 다른 종의 곤충병원성 선충을 동일 기주에 접종하였을 때, S. carpocapsae 포천에 의한 기주 치사율은 $76.2\pm$4.8%였고 Heterorhabditis bacteriophora 함양에 의한 치사율은 $23.8\pm$4.8%였다. 또한 S. carpocapsae 포천에 의한 기주치사율이 각각 $90.5\pm$4.8%와 $80.9\pm$4.8%, H. bacteriophora NC 1에 의한 것은 9.5$\pm$4.8%였다. S. glaseri NC와 H. bacteriophora 함양 및 H. bacteriophora NC 1을 동시 접종하였을 때는 S. glaseri NC에 의한 것이 각각 $61.9\pm$9.65%와 $80.9\pm$4.8%, H. bacteriophora 함양에 의한 것이 $38.1\pm$9.5%, H. bacteriophora NC 1에 의한 것이 $19.1\pm$4.8%였다. 그러나 두 선충의 동시 감염은 관찰되지 않았다. 그리고 S. carpocapsae All과 곤충병원성 곰팡이인 Beauveria brongniartii를 동시 또는 곰팡이를 먼저 처리했을 때는 곰팡이 12시간 전 처리부터 선충과 곰팡이의 동시 감염이 관찰되었고, H. bacteriophora NC 1는 곰팡이 6시간 전 처리부터 동시 감염이 관찰되었다. 선충에 의한 감염과, 곰팡이에 의한 감염, 선충과 곰팡이 동시 감염은 곰팡이 48시간 전 처리부터 관찰되었다. 그러나 유충 증식수는 선충 단독 감염보다 동시 감염충에서 현저히 떨어졌다.

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Urinalysis and Imaging Studies in Children with Urinary Tract Infection (소아 요로감염증으로 진단된 환아에서 요분석 검사와 신영상 검사)

  • Kim Il-Kyung;Seong Ho;Choi Chang-Hee;Kim Kyong-Il
    • Childhood Kidney Diseases
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    • v.3 no.2
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    • pp.117-122
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    • 1999
  • Purpose : We studied the correlation between urinalysis and radiologic findings in infants and children with urinary tract infection. Method : Urine Dipstick test and unstained urine microscopic examination were carried out in 56 infants and children who were hospitallized with the diagnosis of urinary infection by pocitive urine culture at Seoul Adventist from September 1996 through August 1998. Urine was collected by midsream, catheter, urine bag after cleansing or bladder puncture. Renal sonography and $^{99m}Tc-DMSA$ renal scan or voiding cystoureterography were studied. Results : 1)In dipstick analysis, leukocyte esterase(LE) were positive in 30 cases of 56 patients(54%) and Nitrite were positive in 20 cases of 56 patients(36%) and LE or Nitrite were positive in 38 cases of 56 children with UTI(68%). 2)In microscopic analysis, WBC were positive in 38 cases of patients(68%) and bacteria were positive in 23 cases of 56 patients(41%) and WBC or bacteria were positive in 41 cases of 56 children with UTI(71%). 3)Ten cases of 56 UTI patients(18%) showed negative finding in Dipstick and microscopic analysis. 4)There was no significant difference in positive rate of dipstick(71% vs 66%) and microscopia analysis(83% vs 66%) between two group with or without renal scar on $^{99m}Tc-DMSA$ scan (P=0.117). 5)There was no significnt difference in positive rate of dipstick(100% vs 91%) and microscopic analysis(100% vs 100%) between two groups with or without vesicoureteral reflux on VCUG. Conclusion : There was no specific relationships between the abnormal urinalysis and the abnormal findings on $^{99m}Tc-DMSA$ scan or VCUG.

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Efficient Inoculation Method of Beauveria bassiana for Production of Bombycis corpus and Evaluation of Its Liver Protection Activity (백강잠(白彊蠶) 생산을 위한 Beauveria bassiana의 효율적인 접종법 및 백장잠의 간보호 활성 검정)

  • Jung, I-Yeon;Hong, In-Pyo;Kang, Pil-Don;Nam, Sung-Hee;Kim, Mi-Ja
    • Journal of Sericultural and Entomological Science
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    • v.47 no.1
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    • pp.5-11
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    • 2005
  • When inoculating with B. bassiana 101A for the mass production of B. corpus, the infection ratio was high with regardless of the treating time with highly-humidity if the concentration of spore was 1.0${\times}$$10^8$ spores/m/, but that was low if the concentration was 1.0${\times}$$10^7$ spores/m/. In the study of the activities according to the coserving temperature or days of the B. bassiana spawn, the infection ratio of 90% was maintained for 12 days in the temperature of $4^{\circ}C$. However, the infection ratio was rapidly dropped to the below of 5% after conserved for 48 hours in the temperature of $25^{\circ}C$. Besides, the activities of the original isolate had no difference after conserved for 12 months in the temperature of $4^{\circ}C$, so that the infection ratio 90% could be mintatined. In the measure of liver-protecting activities of B. bassiana 101A, the recovering effect was 43.5% and 65.7% respectively in the poisonous treatment induced with galactosamine, compared with liver-protecting activities of Silymarin and DDB in the $H_2O$ fraction. In the poisonous treatment induced with $CCl_4$ the recovering effect was 100% and 69.3% respectively, compared with liver-protecting activities of Silymarin and DDB in the EtOAc fraction.

Mapping of the Damaged Forest by Oak Wilt Disease in Bukhansan National Park (북한산국립공원 참나무시들음병 피해지 맵핑 연구)

  • Yeum, Jung-Hun;Han, Bong-Ho;Choi, Jin-Woo;Jeong, Hee-Un
    • Korean Journal of Environment and Ecology
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    • v.27 no.6
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    • pp.704-717
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    • 2013
  • This study aims to provide basic data for management and prevention of infection damage by Oak wilt disease through mapping method of status with infected level in damaged area of Bukhansan National Park. Survey was carried out in the distributed area of oak trees with mapping unit of polygon of actual vegetation and mapped of infection ratio and infection index applying weight according to infected level. Infection ratio of oak trees in Bukhansan National Park was 58.5%, and lightly damaged ratio was 29.6%, half of the damaged ratio was 16.1%, seriously damaged ratio was 8.8% and withered ratio was 4.1%. It was serious to be infected from Beomgol ridge in Wondobong district to Hyeongjaebong in Jeongrung district. Although the infected ratio of the western part of Songchu district, Sanseong district and Gugi district centering main ridge of Bukhansan National Park was low, it of ridge and main valley was high. Infection index of hardly damaged area was 39.1% of whole area, and slightly damaged area was 41.0%, half of the damaged area was 16.1%, seriously damaged area was 3.3% and alarmed withering area was 0.4%. Infection index was high around Musugol valley in Dobong district and Jaunbong, and it of Bohyunbong of Jeongrung district and the part of Hyojari valley of Sanseong district was serious. Predicted numbers of the trees affected Oak wilt disease compared to the distributed area of oak trees was 1,585,937 trees among 2,709,147 trees of Quercus spp. 352,931 trees among the 306,161 trees of oak were infected in Woi district, the most seriously infected area and 53,141 trees among the 145,747 trees of oak was infected in Gugi district, the most slightly infected area.

병원환자식의 감염예방관리

  • Lee, Yeong-Nam
    • Journal of the Korean hospital association
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    • v.13 no.11 s.119
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    • pp.48-51
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    • 1984
  • 심신이 허약한 환자의 위생적인 식사관리가 병원에서 주요한 관심사가 되고있다. 이는 음식물에 대한 병원균의 감염이 건장한 사람보다 환자에 대해 감염율이 높기 때문이다. 따라서 환자의 위생적인 문제에 보다 많은 배려와 함께 환자의 식이를 담당하는 책임자의 철저한 관리가 요망되고 있다.

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HIV감염인 6천명 시대 도래

  • 대한에이즈예방협회
    • RED RIBBON
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    • s.82
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    • pp.6-7
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    • 2009
  • 우리나라에 처음으로 에이즈 감염인이 나타난 것은 1985년이다. 그로부터 23년이 지난 올해 에이즈 감염인구는 6,000명으로 훌쩍 증가했다. 아시아의 감염인구 증가 추세에 비춰볼 때는 아직까지 우리나라의 에이즈 증가 양상이 낙관적이라고 속단하기는 이르다. 성문화의 이중성이 두드러지고, 콘돔 사용율이 낮은 우리나라의 현실을 잊어서는 곤란하다. 에이즈가 잘 관리되고 있다고 자만하는 순간 에이즈 문제는 다시 우리 사회의 핵심으로 급부상할 수도 있기 때문이다.

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조류인플루엔자(1)

  • Song, Deok-Jin
    • KOREAN POULTRY JOURNAL
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    • v.38 no.8 s.442
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    • pp.142-143
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    • 2006
  • 조류 인플루엔자(Avian influenza, 이하 AI)는 때로는 돼지에서 나타나기도 하지만 주로 가금류에만 감염되는 바이러스성 질병이다 . 본래 “ influenza”는 라 틴 어 의“influential “(영어: influence), “영향을 주다”에서 유래된 말로 옛날 서양인들이 전염병이 돌면 별자리의 영향에 의한 것으로 믿은 것에서 유래됐다 한다. AI는 매우 종특이적(species- specific)이나, 드물게 종을 넘어 인간에게까지도 감염력을 나타내는 것들도 있다. 야생이 아닌 인간이 사육하는 가금류에서는 약독성과 맹독성의 두 종류가 발견되는데 이들은 아주 극단적인 결과를 나타낸다. 약독성은 깃이 곤두서거나 산란율이 저하되는 정도로 미미하게 경과되는 반면, 맹독성은 계군 간의 전파속도가 빠르고 각종 장기들에 감염되어 48시간 이내에 100% 치사율을 보이기도 한다.

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