Evaluation of High Power Light Emitting Diodes (HPLEDs) as Potential Attractants for Adult Spodoptera exigua (Hübner)

Min-Seok Oh,Sang-Guei Lee,Ju-Hyun Jeon,Hoi-Seon Lee 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.10

To response evaluation of high power light emitting diodes (HPLEDs) as potential attractants to the Spodoptera exigua adults, we investigated the attractiveness of specific wavelength, illuminance intensity and light-exposure time, and compared them to the fluorescent. The all light treatments with the 40 lux intensity attracted the significantly highest number of S. exigua. The optimal light-exposure time exhibited the highest attraction rate at the 60 min. When the attraction and repellent rate in the optimal conditions to the S. exigua was surveyed, the white HPLED exhibited the highest attraction rate (91.1%), whereas the red HPLED exhibited the most repellent rate (33.3%). When evatuated of illuminance efficiency with fluorescent as control, white and red HPLED were found to be 9.14 and 10.34 times more efficient than fluorescent. These data clearly show that both the 40 lux intensity and the 60 min light-exposure time by using the white HPLED was the most suitable for attraction of the S. exigua.

일개 대학병원에 내원한 원발성 폐암 환자의 인구학적 및 병리학적 특성

주혜원,강경필,김민근,박민석,임현민,이현경,이성순,이영민,김주인,염호기,최수전,이혁표 인제대학교 2006 仁濟醫學 Vol.27 No.-

Background : Recently, the lung cancer mortality rank first in Korea. The prognosis of lung cancer is not good enough with current treatments and multimodality treatments are required. So we are interested in the characteristics of lung cancer patients for better treatment. Methods : We searched lung cancer patients since 1994. Then we collected the data of primary lung cancer patients about the demographic features, histologic types and diagnotic methods. We divided the total period into 2 haves and specific analysis was tried. Results : 1) Total 850 patients were included. 633 (74.5%) were male and 217 (25.5%) were female. 2) The mean age was 65 ± 11 years old. and the peak age was 7th decades. 3) Squamous cell carcinoma(334/850, 39.3%) was slightly more prevalent than adenocarcinoma(302/850, 35.5%). Conclusion : From these results, we expected that older persons will be diagnosed to have lung cancer and adenocarcinoma will be more dominant histologic type with time.

지지막을 이용하는 액막 추출기 내에서 아연 이온의 이동

주창식,이석희,이민규,홍성수,하홍두,정석기 한국환경과학회 2000 한국환경과학회지 Vol.9 No.2

For the purpose of development of a liquid membrane permeator which separates metal ions from aqueous solutions continuously and effectively, a continuous membrane permeator with the membrane solution trapped between extraction and stripping phases by two micro-porous hydrophilic films was manufactured. Experimental researches on the separation of zinc ion from aqueous solutions were performed in the liquid membrane permeator with 30 vol % D_2EHPA solution in kerosine as liquid membrane. As results, the liquid membrane permeator separates zinc ion from aqueous solutions continuously and effectively in the wide range of operating conditions. A simple mass transfer rate model using equilibrium constant of the extraction reaction for the system used were proposed, and the model was compared with experimental results of separation of zinc ion in the permeator. And the effects of operating factors, such as space time, pH of extraction solution, extraction temperature, on the separation rate of zinc ion in the permeator were experimentally examined.

Antioxidant Activity and Whitening Effect of Lindera erythrocarpa Extract

Min ?Chul Kang,Ryeo Kyeoung Ko,Ju-Yeop Lee,Haeng-Bum Kim,Bong-Seok Kim,Jong-Heon Han,Seong-Hyun An,Gi-Ok Kim 한국생물공학회 2008 한국생물공학회 학술대회 Vol.2008 No.10

유치 탈락 전 상아전질의 흡수에 관한 형태학적 연구

김민석,이은주 전남대학교 치과대학 1996 전남치대논문집 Vol.8 No.1

It is generally believed that hard tissues such as bone or dentine is resorbed by multinucleated giant cells called clastic cells. However, resorption of the nonmineralized superficial layers of mineralized tissue such as osteoid tissue and predentine is still debated. Therefore, the fate of these superficial nonmineralized layers in the initial events involved in tooth resorption and characteristics of the associated cells were studied. The results obtained were as follows. Before multinucleated giant cells appeared, nonmineralized predentine layer appeared to be intact and was covered with an odontoblastic layer. Concomitantly with beginning of resorption, odontoblasts began to degenerate, becoming atrophied or flattened. Multinucleated giant cells appeared on the predentine surface had ruffled border and clear zone. It formed typical resotption lacunae on the predentine surface. Completion of predentine resorption followed by dentine resorption by multinucleated cells. These results suggest that superficial nonmineralized layers, such as predentine, also can be resorbed by multinucleated odontoclasts, probably in much the same way as dentine resorption.

ZigBee를 이용한 저전력 텔레매트리 연구

서민석,이호응,박현주 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

This paper presents the method to apply ZigBee communication technologies to existing telemetry. ZigBee communications aim at low power consumption wireless communication. Telemetry is become more efficient by taking advantage of ZigBee communication. We measured the basic capacity of battery. And through the study of using more efficient electric power we study the implementation methods of telemetry to be able to communicate based on ZigBee for a long time.

관상동맥색전증에 의한 급성심근경색증 4예

김민근,주혜원,강경필,최병돈,박민석,변영섭,고충원,이건주,김병옥 인제대학교 2006 仁濟醫學 Vol.27 No.-

Acute myocardial infarction(AMI) due to coronary embolism can occur in patients with normal coronary artery. Coronary embolism is believed to be a cause of acute myocardial infarction when emergent coronary angiography shows perfectly normal coronary trees, except for the finding of coronary artery occlusion. In this report, we describe four patients with AMI due to coronary embolism who were successfully treated using a thrombus aspiration device and anticoagulation, and those patients had intracardial thrombus arising from the left atrium due to chronic atrial fibrillation and valvular heart disease. Patients with chronic or paroxysmal atrial fibrillation can present with AMI due to coronary embolism, and thrombus aspiration with percutaneous aspiration device is a feasible treatment option for these patients along with anticoagulation the rapy.

직장에 발생한 원발성 악성 흑색종 1예

이석주,김광일,김동호,김홍성,우상민,최덕례,정현용 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1

An extremely rare case of primary melanoma involving only rectum is reported. This 59 year-old male patient was admitted to the hospital because of hematochezia, difficulty of defection. Endoscopic examination and radical excision showed polypoid lesion with ulceration which measured 6x6x3cm in 2cm from the anal verge. Histopathologic, H&E stain and electron microscopic examination(EM) were performed from endoscopic biopsies and excisional mass. We are reporting a case primary rectal melanoma with brief review of literature.

수중식물과 침전물에 의한 용존산소 변화량 결정 : 하천모델 이용법;a Stream Model Approach

이용석,최은주,박민대,박석순 江原大學校 附設 環境硏究所 1993 環境硏究 Vol.10 No.-

하천모델을 이용하여 한강 지류인 탄천에서 수초와 침전물에 의한 용존산소 변화량을 측정하였다. 수질자료에 따르면 탄천은 상류의 부영양화 지역 (Eutrophic Zone)과 하류의 강부수성 지역 (Polysaprobic Zone)으로 구분되며 상류는 수초의 광합성과 호흡이, 하류는 침전물 산소요구량이 수중 용존산소 농도 결정에 주 역할을 하고 있다. 하천조사는 1990년5월과 10월 2회에 걸쳐 2일간 연속적으로 실시되었다. 조사 결과 상류의 경우 수초 광합성과 호흡에 의한 매우 큰 용존산소 일주변화가 관찰되었다. 그러나 하류의 경우 침전물 산소요구량이 크고 수초 성장이 없기 때문에 일주변화가 거의 나타나지 않는 매우 낮은 농도가 측정되었다. 1차 조사시 상류에서 수중식물의 광합성량과 호흡양은 각각 55~100g 0₂/m²/day, 30~70g 0₂/m²/day으로 측정되었으며, 2차 조사시 각각 40~80g 0₂/m²/day, 25~55g 0₂/m²/day으로 측정되었다. 하류에서는 침전물 산소요구량이 1차 및 2차 조사시 동일하게 4~100g 0₂/m²/day로 측정되었다. The dissolved oxygen changes caused by aquatic plants and sediments were comput-ed in the Tancheon, a tributary of the HanRiver, by utilizing a stream model. According to the collected water quality conditions, the Tancheon was classified into two distinc-tive zones which were eutrophic zone in upstream area and polysaprobic zone in downstream area. The dissolved oxygen levels of the stream were determined mainly by the photosynthesis and respiration of the macrophytes in upstream area and by the sediment oxygen demand in downstream. Field data were obtained from two synoptic stream surveys performed during May and October, 1990 for two consecutive days The high diurnal dissolved oxygen variation was observed in upstream area due to an excessive growth of aquatic plants. In downstream area, however, little diurnal varia-tion with low dissolved oxygen level was observed, which would be attributed to high sediment oxygen demand and no discernible aquatic plant growth. In upstream area, the dissolved oxygen changes caused by the photosynthesis and respiration were ranged from 55g 100g 0₂/m²/day from 30 to 70 g 0₂/m²/day, respectively, during the first survey. The changes were ranged from 40 to 80g 0₂/m²/day for the photosynthesis and from 25 to 55g 0₂/m²/day for the respiration during the second survey, In downstream area, the sediment oxygen demands were measured from 4 to 100g o₂/m²/day during both surveys.

Prevotella nigrescens의 용혈특성에 관한 연구

곽주석,장훈상,장석우,이수종,유용욱,민경산 大韓齒科保存學會 2005 Restorative Dentistry & Endodontics Vol.30 No.4

세균의 용혈활성은 세균이 숙주 내에서 생존하기 위해 필요한 철을 획득하기위한 특성이며 기능면에서 볼 때 숙주에 대한 중요한 독력인자로 간주될 수 있다. 본 연구에서는 괴사치수 및 치근단 치주염으로 진단된 환자의 근관에서 분리한 Prevotella nigrescens의 용혈활성을 다양한 조건 하에서 측정하여 그 특성을 규명하는 것을 목적으로 한다. 1. 임상에서 분리한 P. nigrescers와 표준균주인 P. nigrescers ATCC 33563에서 모두 용혈활성이 나타났다. 2. 사람, 면양 및 말 세 가지 종에 대해 용혈활성을 비교한 결과 사람의 적혈구에서 가장 강한 용혈활성을 나타내었다. 3. 용혈소 억제제인 NaN₃와 dithiothreitol (DTT)는 농도의존적으로 P.nigrescers의 용혈활성을 감소시켰다 (p<0.05). 4. P. nigrescers가 최대 용혈활성을 나타내는 최적의 pH는 4이었으며, 50℃이하의 온도에서는 용혈활성을 보였으나 95℃에서 급격히 감소하였다. 5.배양조건에 따른 P. nigrescens의 용혈활성을비교한 결과 10% CO₂배양기에 배양한 경우혐기성 조건에서 배양한 것보다 더 높은 용혈활성을 보였다. Hemolytic property is a specific feature of bacteria to obtain iron which is essential for its survival in host tissues. Therefore, it is thought to be one of several factors of virulence. The purpose of this study was to investigate the hemolytic properties of Prevotella nigrescens isolated from the teeth diagnosed as pulp necrosis and apical periodontitis under the presence of hemolysin inhibitors such as NaN3 and dithiothreitol, heat, various pH and cultural conditions. The results were as follows; 1. Clinically isolated P. nigrescens strains and standard P. nigrscens ATCC 33563 showed hemolytic activity. 2. P. nigrescens showed higher hemolytic activity against human erythrocytes than sheep or horse erythrocytes. 3. NaN₃ and dithiothreitol (DTT) reduced the hemolytic activity of P. nigrescens in a dose dependent manner (p<0.05). 4. Optimal pH for the maximum hemolytic activity of P. nigrescens was 4.0 and the hemolysin was stable under the 50℃, but the hemolytic activity was significantly decreased at 95℃. 5. P. nigrescens cultured in 10% CO₂ condition showed higher hemolytic activity than the bacteria cultured in the anaerobic condition.[J Kor Acad Cons Dent 30(4):335-343,2005]