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시설복숭아에서 호박벌(Bombus ignitus Smith)의 화분매개활동 특성
이기열,이상범,안기수,박성규,윤형주,Lee, Ki-Yeol,Lee, Sang-Beom,Ahn, Ki-Su,Park, Seong-Kyu,Yoon, Hyung-Joo 한국응용곤충학회 2007 한국응용곤충학회지 Vol.46 No.2
시설복숭아에서 호박별의 회분매개활동과 효과에 대하여 조사하였다. 2002년 2월 하순경 시설복숭아에서 호박벌의 방화활동은 오전 8시부터 오후 5시까지이며, 활동최성기는 오전 11시였다. 착과율은 호박벌방사구 73.4%, 인공수분구 73.1% 로서 차이가 없었으나, 무처리구는 33.9%로 매우 낮았다. 상품과 율은 호박벌방사구가 90.0% 로서 인공수분구 83.3% 보다 높았으며, 무처리구는 53.8% 로서 매우 낮았다. 호박벌 방사구가 인공수분구에 비해 착과율과 상품과율이 좋았으며, 노동력도 93% 절감되어 호박별 방사에 의한 효과가 뚜렷하였다. The pollinating activity of bumblebee, Bombus ignitus was investigated at the blossom of Peach [Prunus persica (L.) Batsch] planted in vinyl house. The major time of foraging activity by B. ignitus was between 08:00 and 7:00, and the peak time of pollinating activity by B. ignitus was 11 :00 in the peach vinyl house from February 28 to March 5 in 2002. The rate of fruit set and the rate of marketable fruit by foraging activity of B. ignitus were much better than artificial pollination, and the effect of labor reduction by the pollinating activities of B. ignitus released against th ε artificial pollination was took remarkable profits over 93%. Therefore, the foraging activity of B. ignitus in peach vinyl house brought satisfactory results among the rate of fruit set, the rate of marketable fruit and the effect of labor reduction against the artificial pollination.
벼먹노린재(Scotinophara lurida)의 월동처와 본답발생
이기열,박성규,안기수,최병렬,Lee Ki-Yeol,Park Sung-Kyu,Ahn Ki-Su,Choi Byeong-Reol 한국응용곤충학회 2004 한국응용곤충학회지 Vol.43 No.4
Overwintering sites and Seasonal occurrence of various growth stage of the rice black bug, Scotinophara lurida BURMEISTER were studied at the rice paddy field in Chungbuk area, from 1999 to 2001. Attraction by light trap from overwintering site of overwintering adults occurred from early June to mid July and its peak was shown on late June. Eggs were oviposited from early July to early August and its peak appeared in late July. Nymphs were observed from mid July to late September with its peak on mid August. The newly eclosed rice black bugs were found in late August and its peak on mid September. The rice black bug overwintered as adult at mountain foot, banks, and rice paddy levee. 충북지역에서 벼먹노린재(Scotinophara lurida)에 대한 월동처와 본논발생에 대하여 1999년부터 2001년에 걸쳐 조사하였다. 벼먹노린재 월동성충은 월동처에서 6월 상순부터 7월 상순까지 유아등에 포획되었으며, 이동최성기는 6월 하순이었다. 본논에서 각 태별 발생 피크는 월동성충이 7월 중순, 알이 7월 하순, 약충은 8월 중순에 가장 높은 밀도를 보였으며, 제 1대 성충은 9월 중순에 가장 높은 밀도 피크를 보였다. 월동태는 성충이며, 월동충은 산기슭, 제방, 논뚝에서 발견되었다.
애반딧불이(Luciola lateralis)에 대한 살충제와 비료의 독성평가
이기열,김영호,이재웅,송명규,남상호,Lee, Ki-Yeol,Kim, Young-Ho,Lee, Jae-Wung,Song, Myung-Kyu,Nam, Sang-Ho 한국응용곤충학회 2008 한국응용곤충학회지 Vol.47 No.3
시판되는 살충제 10종과 비료 6종에 대하여 애반딧불이 각 태별(유충, 성충, 알) 독성평가를 실내실험을 수행하였다. 3령유충에 대한 독성은 MEP, PAP, Assit, Fenthion, Diazinon, Burofezin fenobucarb, Cartap Buprofezin, Thiamethoxam, Fipronil은 80.0%이상 사망율률 보인 반면, IGR(곤충성장 저해제)계통인 Tebufenozide은 33,3%의 낮은 사망률을 보였다. 공시약제인 Assit, Cartap Buprofezin, Fenthion, PAP에 대한 3령 유충의 $LC_{50}$값(반수치사량)은 각각 1.03 ppm, 1.90 ppm, 10.26 ppm, 0.98 ppm이었다. 알에 대한 영향은 매우 높은 독성을 보였다. 반면에 Tebufenozide은 100%의 부화율을 보였다. 공시비료인 요소, 유안, 염화가리, 용성인비, 복합비료(17-21-17), 규산질비료에 유충을 72시간 노출시켰을 경우 각각 27.3%, 56.7%, 73.3%, 0.0%, 0.0%, 0.0%의 독성을 보였다. Toxicity of 10 registered insecticides and 6 fertilizers were tested against $3^{rd}$ larva and adults of Korean firefly, Luciola lateralis Motschulsky(Coleoptera: Lampyridae). All experiments were tested at the recommended concentration of each inescticides by producer. MEP, PAP, Acephate, Fenthion, and Diazinon, which were organophates, a mixtures combined with Burofezin fenobucarb, Cartap buprofezin, and Thiamethoxam(Neonicotinoids), Fipronil(Phenylpyrazoles) showed more 80.0% mortality on larva and adults of L. lateralis. However, tebufenozide(I.G.R) showed low mortality of 33.3%. $LC_{50}$ (ppm) value of Assit, Cartap buprofezin, Fenthion and PAP were showed 1.03 ppm, 1.90 ppm, 10.26 ppm, 0.98 ppm, respectively, against $3^{rd}$ larva of L. lateralis. Effects against eggs showed very high toxicity. Otherwise, tebufenozide(I.G.R) was showed hatchability of 100%. Toxicity of Urea fertilizer, Ammonium sulfate, Potassium chloride, Fused phosphate, Complex fertilizer and Silicate fertilizer were showed the mortality with 27.3%, 56.7%, 73.3%, 0.0%, 0.0%, 0.0%, respectively, when exposed 72 hrs after treatment.
Midazolam에 의해 유발된 약물 유발성 과민 증후군
이기열 ( Ki Yeol Lee ),홍진우 ( Jin Woo Hong ),이채영 ( Chae Young Lee ),김기호 ( Ki Ho Kim ),김영훈 ( Young Hun Kim ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.10
Drug hypersensitivity syndrome is defined by various combinations of severe skin eruption and systemic signs. The symptoms of this syndrome usually begin in two to six weeks after the exposure to the offending drug, but if a patient is re-challenged with the drug, then the symptoms occur within a day. Midazolam is a short-acting benzodiazepine that`s commonly used for conscious sedation for a variety of procedures and also for premedication. Midazolam is capable of causing adverse effects such as nausea, vomiting, difficulty of breathing, cardiac arrest and signs of an allergic reaction. A 56-year-old man was prescribed Midazolam to prepare him for colonoscopy. Shortly after, he developed diffuse erythematous macules and patches with an itching sensation on all the skin of his body. The laboratory studies showed leukocytosis with eosinophilia and abnormal liver transaminase values. The skin biopsy showed vacuolar degeneration in the basal layer and a perivascular lymphocytic infiltration with eosinophils in the upper dermis. He was diagnosed as suffering with Midazolam-induced drug hypersensitivity syndrome and he was treated with systemic steroid and antihistamines for 2 weeks. This resulted in an improvement of the skin lesions and normalization of the liver transaminase values. To the best of our knowledge, no case of drug hypersensitivity syndrome associated with Midazolam has ever been published. Herein, we report that Midazolam, which is a widely used drug, may induce drug hypersensitivity syndrome. (Korean J Dermatol 2009;47(10):1158∼1161)
건선 병변부에서의 가지세포 및 효과기 T세포와 연관된 염증성 싸이토카인 및 케모카인의 발현
이기열 ( Ki Yeol Lee ),전수영 ( Su Young Jeon ),고동엽 ( Dong Yeob Ko ),송기훈 ( Ki Hoon Song ),김기호 ( Ki Ho Kim ) 대한피부과학회 2012 대한피부과학회지 Vol.50 No.7
Background: T cells and dendritic cells (DCs) are more observed in the psoriatic lesion. Inflammatory DCs stimulate T cell differentiation (Th1 or Th17 cells) by producing IL-12 and IL-23 in psoriasis. Th1 expresses CCR5, while CCR6 is expressed by Th17. CCL20, the ligand of CCR6, is expressed mostly in keratinocytes to play an important role in the migration of Th17 cells. Transforming growth factor (TGF)β inhibits the inflammatory cytokines and induces fibrosis. But, there are still controversies about the role of TGFβ1 in psoriasis. Objective: The purpose of this study is to clarify the pathogenesis of psoriasis by comparing the expression patterns of CD11c/IL-23, CCR5/CCR6, CCR6/CCL20, CD11c, IFN-γ, and TGFβ1 among overall lesional assessment (OLA) 1, 3, 5, and the control group. Methods: We performed CD11c/IL-23, CCR5/CCR6, CCR6/CCL20 double-immunofluorecence and immunohistochemistry of CD11c, IFN-γ, and TGFβ1 after classifying the severity of the lesion in 1, 3, 5 with OLA score. Results: As OLA score increased, the infiltration of CD11c+IL-23+ cells, CCR5+ cells, and CCR6+ cells and the expression of CCL20 also showed a significant increase. While IFN-γ+ cells also increased with the OLA score, TGFβ1 showed positivity usually in the increased vascular endothelial cells and the number of TGFβ1+ vascular endothelial cells increased with OLA score. Conclusion: From the results, the interaction among the dendritic cell-effector T cell, and cytokine derived from the cells, and chemokine/chemokine receptor was confirmed to be important in pathogenesis of psoriasis. It was also confirmed that TGFβ1 is not only important at neoangiogenesis, but at inflammatory angiogenesis in psoriasis. (Korean J Dermatol 2012;50(7):599∼608)
강재 탄성보로 보강된 철근콘크리트 연속슬래브의 구조적 거동
이기열 ( Lee Ki-yeol ),정제평 ( Jeong Jae-pyung ),김봉환 ( Kim Bong-hwan ),김우 ( Kim Woo ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
This paper presents the experimental investigation and structural behavior of reinforced concrete continuous slabs strengthened by steel elasticity beam. Reinforcement type and position were included as a major experimental parameter together with bolting method. The results showed that if continuous flexural structures were strengthened by positive moment area, diagonal crack appeared negative region instantly brittle failures although ultimate strength were increased. Based on these observations, a negative moment region required reinforcement as same strength and additional inclined bolt prevent for diagonal crack.