로봇 매니퓰레이터의 LQG 시각 서보제어

임태헌,전향식,최영규,김성신 제어로봇시스템학회 1999 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.10

Ag촉매를 이용한 NOx의 탄화수소 선택적촉매환원 반응 특성

임태헌,현영진,목영선 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1

발전소, 디젤엔진, 소각에서 발생하는 NOx, HC, PM, SOx, CO, CO₂, 분진 등 대기오염 물질로 이루어진 배기가스가 배출되고 있고 그 중 NOx는 광학스모그, 오존, 산성비를 유발시킨다. 따라서 전세계적으로 대기오염에 관심이 증가되면서 NOx의 규제도 강화되는 추세이다. 본 연구는 NOx를 제거 하기 위해 선택적촉매 환원법을 이용 하였다. 촉매로는 Ag/r-Al₂O₃으로 선정하였으며, 입자 크기(20, 50, 80 nm) 에 따른 물리적 특성을 조사 하였으며, 환원제의 비율에 따른 NOx 제거율을 알아보았다. 환원제는 안전성, 촉매의 수명에 있어서 유리한 Alkane께 탄화수소 n-heptane을 사용 하였으며 산소 10% 조건에서 실험을 수행하였다. 촉매 전체적으로 300~400℃에서 NOx제거율이 90% 이상이며, 촉매의 크기가 작을수록 250℃에서 제거율이 높은 것을 확인 할 수 있었다. BET, FE-SEM를 이용하여 촉매의 표면특성을 조사 하였으며, H₂-TPR 실험을 통해 촉매의 환원특성을 조사하였다.

Responses of Peach Blossom Blight and Brown Rot Fungus Monilinia fructicolato Benzimidazole and Diethofencarb in Korea

임태헌,김진호,차병진 한국식물병리학회 2006 Plant Pathology Journal Vol.22 No.1

were investigated in four regions of Korea from 1998 to 2000. The isolation frequency of benzimidazole-resistant isolates ranged from 18.8% to 29.6% in Chongdo and from 22.0% to 26.8% in Gyeongsan during the same period. However, the frequency of benzimidazoleresistant isolates was less than 4.0% in Chochiwon and Youngduk during the same period. Benzimidazoleresistant isolates showed cross-resistance among benzimidazoles. On the other hand, none of the isolates showed cross-resistance to diethofencarb and carbendazim. Regardless of the year, the benzimidazole-resistant isolates of EC50 higher than 500 μg a.i./ml were isolated more frequently in mid and late season than in early season. In an orchard of Gyeongsan that had not been exposed to any fungicides for several years, the population of benzimidazole-resistant isolate had persisted without much fluctuation for three years. These results suggest that benzimidazole resistance of M. fructicola is becoming a problem in controlling brown rot and blossom blight of peach in regions like Chongdo and Gyeongsan.

Effects of Streptomyces griseofuscus 200401 on Melon Powdery Mildew inGreenhouse

임태헌,조정상,강상재,Iruthayasamy Johnson,차병진,최용화 한국식물병리학회 2008 Plant Pathology Journal Vol.24 No.1

The fermentation broth (FB) of Streptomyces griseofuscus 200401 isolated from non-farming soil showed antagonistic activity against powdery mildew fungus both in melon leaf/seedling assay and in field trials. The FB of S. griseofuscus 200401 was tested at different concentrations. In primary test, the control value of 2- fold diluted FB of S. griseofuscus 200401, compared to control, reached to 82.8%. The protective activity recorded 80.5% in 2-fold dilution of FB. The effect was reduced to 28.9% in high dilution (100-fold) treatment. The curative effect was relatively lower than protective activity. In field test, the antifungal activities of S. griseofuscus 200401 remained low in blocks sprayed with 100-fold diluted FB and the control values were 15.2 and 15.9% in 2005 and 2006, respectively. However, the activities were as high as 65% and 67.3% in the blocks treated with 2-fold dilution of FB during the same period.

금속 촉매의 형태에 의한 질소산화물 HC-SCR 특성

임태헌,목영선,현영진 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1

질소산화물(NOx)은 대기오염원 중 하나로서 광학스모그, 산성비로 인한 토양의 pH저하의 원인이다. 그렇기 때문에 전세계적으로 질소산화물 배출에 관한 환경법규는 강화되고 있다. 선행 연구에 의하면 질소산화물의 배출을 저감하기 위해 선택적 촉매환원법을 이용하였으며, 암모니아를 환원제로 사용 할 경우, 미 반응한 암모니아가 설비를 부식시켜 장비수명을 단축하는 단점이 있지만, 알칸족 탄화수소를 사용 할 경우 이런 문제를 해결 할 수 있으며, 안전성 촉매의 수명에 있어서 유리하다. 본 연구에서는 Ag, Cu, RuO₂ 촉매를 선정하였으며 r-Al₂O₃를 지지체로 사용하였다. 환원제로는 알칸족 n-heptane를 이용하였으며, 반응 온도조건은 200~500°C로 50°C간격으로 측정하였다. 금속 촉매의 형태에 의한 NOx제거율은 Ag, RuO₂는 입자형태의 촉매가 좋았으며, Cu 경우 선형형태에 촉매가 입자형태 촉매보다 NOx제거율이 높은 것을 확인 할 수 있었다. 촉매의 활성을 알아보기 위해 TPR 분석을 하였으며, BET, FE-SEM를 이용하여 촉매의 물리화학적 표면특성을 조사하였다.

포도 수출단지 과원과 수출포도의 병 발생현황

임태헌,이석준,이채민,송진선,한상섭,이동운 경상대학교 농업생명과학연구원 2017 농업생명과학연구 Vol.51 No.2

From 2010 to 2012, this study conducted to survey occurrence of quarantine diseases occurrence on cultivation, harvest period of grapevine, and sorting places for export grapevine in export complex areas(domestic vs. export; Hwaseong in Gyeonggii, Sangju and Yeongcheon in Kyeongbuk, Namwon in Jeonbuk and Yeongdong in Chungbuk). Diagnosed diseases in this study were gray mold by Botrytis cinerea, blact rot by Botryosphaeria dothidea, anthracnose by Colletotrichum gloeosporioides, bird,s eye rot by Elsinoe ampelina, Phomopsis cane by Phomopsis viticola, downy mildew by Plasmopara viticol, leaf blight by Pseudocercospora vitis, and powdery mildew by Uncinula necator. The leaf blight disease incidence and severity showed the highest infection rate in all surveyed fields. Occurrence rate of investigated all diseases was different depending on individual farmer and occurrence rate of disease was lower in export farms than that of domestic sale farms. Disease infested grapes were eliminated during selection process and ratio of removed the infection fruit is relatively well-performed in export facilities than domestic packing facilities.

토양 분리 방선균 Streptomyces griseofuscus 200401의고추 생육 촉진과 역병 발생 억제 효과

임태헌,김진호,권순열 한국식물병리학회 2006 식물병연구 Vol.12 No.1

The microorganisms with the antifungal activity against Phytophthora capsici and Colletotrichum acutatum and the plant growth-promoting activity were screened from a forest and natural fields of Gajang-Dong, Sangju-city. One of the isolates, Streptomyces griseofuscus 200401, was selected as a good plant growthpromoting strain in this study. In greenhouse test, the number of leaf, fresh weight, and dry weight of pepper plants, that were grown with treatment of culture suspension or powder containing S. griseofuscus 200401, were higher than those without the bacterial cells. Cultivation of S. griseofuscus 200401 strain for 7 days in a nutrient rich medium produced ammonium chloride up to 0.13 μg/ml in the culture solution of S. griseofuscus. Treatment of the selected strain significantly reduced the severity of the late blight of pepper plants to show the equivalent disease control activity to chemical fungicide. This study suggests that S. griseofuscus 200401 strain could be a potential biological agent with the biocontrol activity and the plant growth-promoting activity.

Antifungal Activity of Streptomyces pad anus isolate TH04 against Monilinia fructicola, Brown rot Fungus on Stone-fruits

임태헌,최용화,이동운,한상섭,차병진,Lim, Tae-Heon,Choi, Yong-Hwa,Lee, Dong-Woon,Han, Sang-Sub,Cha, Byeong-Jin The Korean Society of Pesticide Science 2008 농약과학회지 Vol.12 No.3

복숭아 미이라 과일로부터 복숭아 잿빛무늬병 Monilinia fructicola에 대하여 강한 항균활성을 보이는 방선균 Streptomyces padanus TH04를 분리하였다. TH04 균주의 배양 추출물 1%를 함유한 배지에서의 균사생육 및 포자발아는 시험한 M. fructicola의 strain에 따라 각각 $79.8{\sim}81%$와 $73.9{\sim}75.8%$ 억제되었다. 병원균과 TH04 균주 초기접종 밀도를 0.01%, 0.1% 및 1%로 달리하여 동시배양 한 결과, 항균활성은 선발 방선균의 밀도에 따라 $7.5%{\sim}94%$로 나타났다. 사과(품종; 후지)를 이용한 조추출물의 항균활성은 0.1% 처리구 85.9%, 1%처리구 100%로 나타났다. 항균활성 물질 생산, 안정성 및 제형화에 관한 연구가 이루어질 경우 선발한 Streptomyces padanus TH04는 생물학적 방제제로의 개발 가능성 있을 것으로 생각된다. The Streptomyces padanus isolate TH04, isolated from mummified peaches, showed strong antifungal activity to Monilinia fructicola. The inhibition activity of the isolate TH04 to mycelial growth and spore germination at 1% concentration of sub-antifungal powder made from culture suspension (CS) was ranged from 79.8% to 81.0% and from 73.9% to 75.8% to M. fructicola four strains, respectively. In the test of antifungal activity in mixed culture of the isolate and M. fructicola, inhibition rate was 7.5%, 86.8% and 94.0% in 0.01, 0.1, and 1% concentration of CS containing bacterial cell of the isolate, respectively. On apples (cultivar; Fuji), the control values of the isolate TH04 crude filtrates (0.1 and 1%) were 85.9% and 100%, respectively. The results suggest that the isolate TH04 indicate development possibility as biocontrol agent of brown rot caused by M. fructicola with the study on delivery method and fermentation condition to produce an antifungal compound.

잿빛무늬병균에 대한 Streptomyces padanus isolate TH04의 항균활성

임태헌,최용화,이동운,한상섭,차병진 한국농약과학회 2008 농약과학회지 Vol.12 No.3

The Streptomyces padanus isolate TH04, isolated from mummified peaches, showed strong antifungal activity to Monilinia fructicola. The inhibition activity of the isolate TH04 to mycelial growth and spore germination at 1% concentration of sub-antifungal powder made from culture suspension (CS) was ranged from 79.8% to 81.0% and from 73.9% to 75.8% to M. fructicola four strains, respectively. In the test of antifungal activity in mixed culture of the isolate and M. fructicola, inhibition rate was 7.5%, 86.8% and 94.0% in 0.01, 0.1, and 1% concentration of CS containing bacterial cell of the isolate, respectively. On apples (cultivar; Fuji), the control values of the isolate TH04 crude filtrates (0.1 and 1%) were 85.9% and 100%, respectively. The results suggest that the isolate TH04 indicate development possibility as biocontrol agent of brown rot caused by M. fructicola with the study on delivery method and fermentation condition to produce an antifungal compound.

토양 방선균 Streptomyces sp. MG 121의 항균활성 및 고추 생육에 미치는 효과

임태헌,김진호,조성현 한국식물병리학회 2007 식물병연구 Vol.13 No.2

The microorganisms with the antifungal activity against Phytophthora capsici and Colletotrichum acutatum and the plant growth promotion activity were screened from forest soils of Moon-gyeong (Juheul Mountain), Gyeongsangbuk-do. One of the isolates, strain MG 121 showed antifungal activity against P. capsici and C. acutatum and possessed phosphate solubilization activity was selected to development biocontrol agent. The strain MG 121 was identified as Streptomyces sp. by analysis of 16S rDNA. On the test with pepper fruits, the strain inhibited disease incidences of late blight and anthracnose over 80%. In greenhouse test, plant height, the number of leaf, fresh weight and roots length of pepper plants upon treatment of culture suspension of Streptomyces sp. MG 121 were significantly higher than those without the bacterial cells. In addition, strain MG 121 was capable to solublize rock-phosphate after incubation for 144 hours in potate dextrose broth. The concentration of soluble phosphate in PDB amended with 0.5% rock-phosphate was increased up to 765 μg/ml.