토양 방선균 N-29 배양 여액의 생태계교란 식물 돼지풀 방제효과

김재덕,김영숙,곽화숙,김혜진,이윤미,고영관,박기웅,최정섭,Kim, Jae-Deok,Kim, Young-Sook,Kwak, Hwa-Sook,Kim, Hye-Jin,Lee, Youn-Me,Ko, Young-Kwan,Park, Kee-Woong,Choi, Jung-Sup 한국잡초학회한국잔디학회 2018 Weed & Turfgrass Science Vol.7 No.3

토양 방선균 Streptomyces scopuliridis KR-001의 개량 균주인 N-29 균주 배양 여액의 돼지풀에 대한 방제효과를 온실 및 포장조건에서 수행하여 돼지풀 방제제 후보소재로서의 가능성을 검토하였다. N-29 균주 배양 여액은 온실조건에서 돼지풀초 중 후기 경엽처리 시 처리된 농도범위에서 대부분 완전 방제되었으며, 자연상태에서 발생한 돼지풀에 대해서도 매우 탁월한 방제효과를 나타내었다. 선발 균주 N-29 배양 여액의 돼지풀에 대한 살초특성은 매우 속효성일 뿐만 아니라 약효지속기간도 매우 길게 유지되었으며, 외형적으로 발현되는 주요 증상으로는 처리 초기에 황화 증상이 발현되었다가 고사로 진행되어 궁극적으로 낙엽화되어 사멸되었다. 토양 방선균 N-29 균주는 친환경적인 생태계교란 광엽잡초 돼지풀 방제제로서 유용하게 활용할 수 있을 것으로 기대된다. We isolated Streptomyces scopuliridis KR-001 that produced herbicidal active metabolite(s) against several grass and broad leaf weeds. In this study, potential as natural herbicide of mutant N-29 broth filtrate of S. scopuliridis KR-001 was investigated to Ambrosia artemisiifilia in a greenhouse and field condition. The broth filtrate of mutant N-29 by foliar application showed a strong herbicidal activity to A. artemisiifilia with leaf stage in a greenhouse condition. Also, field trial of foliar application within treatment range had effectively controlled with early and middle stage of A. artemisiifilia at the natural habitats. Phytotoxic symptoms of mutant N-29 broth filtrate by foliar application were wilting and discoloration, and burn-down of leaves and finally plant death. These results suggest that mutant N-29 broth filtrate is considered possible as a natural herbicide for controlling environmentally friend to invasive alien plant such as A. artemisiifilia and may provide a new lead molecule for a more efficient herbicide.

치아회분과 석고혼합제제 매식후 Digital Subtraction Radiography에 의한 골량 변화의 평가

김재덕,김광원,조영곤,김동기,최의환,Kim Jae-Duk,Kim Kwang-Won,Cho Yaung-Gon,Kim Dong-Kie,Choi Eui-Hwan 대한영상치의학회 1999 Imaging Science in Dentistry Vol.29 No.2

Purpose : To assess the methods for the clinical evaluation of the longitudinal bone changes after implantation of tooth ash-plaster mixture into the defect area of human jaws. Materials and methods : Tooth ash-plaster mixtures were implanted into the defects of 8 human jaws. 48 intraoral radiograms taken with copper step wedge as reference at soon, 1st, 2nd, 4th, and 6th week after implantation of mixture were used. X-ray taking was standardized by using Rinn XCP device customized directly to the individual dentition with resin bite block. The images inputted by Quick scanner were digitized and analyzed by NIH image program. Cu­equivalent values were measured at the implanted sites from the periodic digital images. Analysis was performed by the bidirectional subtraction with color enhancement and the surface plot of resliced contiguous image. The obtained results by the two methods were compared with Cu­equivalent value changes. Results : The average determination coefficient of Cu-equivalent equations was 0.9988 and the coefficient of variation of measured Cu values ranged from 0.08~0.10. The coefficient of variation of Cu-equivalent values measured at the areas of the mixture and the bone by the conversion equation ranged from 0.06 ~0.09. The analyzed results by the bidirectional subtraction with color enhancement were coincident with the changes of Cu-equivalent values. The surface plot of the resliced contiguous image showed the three dimensional view of the longitudinal bone changes on one image and also coincident with Cu-equivalent value changes after implantation. Conclusion : The bidirectional subtraction with color enhancement and the surface plot of the resliced contiguous image was very effective and reasonable to analyze clinically and qualitatively the longitudinal bone change. These methods are expected to be applicable to the non-destructive test in other fields.

파노라마방사선사진에서 골형태 계측과 구내표준필름에서 구리당량치의 상관관계

김재덕,Kim Jae-Duk 대한영상치의학회 2003 Imaging Science in Dentistry Vol.33 No.3

Purpose: To determine whether the mandibular radiomorphometric indices in panoramic radiography are correlated with the bone mineral density of Cu-equivalent images in intraoral film. Materials and Methods: The bone mineral density (BMD) of the mandibular premolar area was measured in the Cu-equivalent image of intraoral film. The Panoramic Mandibular Index (PMI) and Mandibular Cortical Width (MCW) were measured in panoramic radiographs of six dry mandibles, and the Pearson correlation between PMI, MCW, and BMD were tested. Results: There were no significant correlations between PMI and BMD (r = 0.280), nor between MCW and BMD (r =0.237). Conclusion: The results show that PMI and MCW were poor diagnostic indicators of mandibular BMD in the six dry mandibles used in this study. The correlationship between the mandibular radiomorphometric indices (PMI and MCW) and mandibular BMD needs to be researched further using large in vivo patient samples.

초임계 이산화탄소 용매하의 요소부가법에 의한 어유지방산으로부터 EPA 와 DHA 의 분리

김재덕,임종성,이윤우 ( Jae Duck Kim,Jong Sung Lim,Youn Woo Lee ) 한국유화학회 1997 한국응용과학기술학회지 Vol.14 No.2

Separation of EPA and DHA from fish oil fatty acid ethyl ester (FAFE) by urea adductive crystallization method was carried out in the supercritical carbon dioxide (SC CO₂) as a solvent. Our results showed that SC CO₂is a good candidate as a solvent in the adductive crystallization to separate FAFF by the number of unsaturated bohds. Compared to the separation process using methanol, SC CO₂yielded better performance in the overall selectivity of EPA and DHA. The effect of process variables on separation of EPA and DHA was discussed in detailed. A hybrid technology of SC CO₂fractionation and urea adductive crystallization with SC CO₂was conformed as a viable process to separate and concentrate EPA and DHA from fish oil.

파노라마촬영장치의 협설선형단층상에 의한 상악동과 치조골 평가

김재덕,Kim Jae-Duk 대한영상치의학회 2003 Imaging Science in Dentistry Vol.33 No.3

Purpose: To evaluate the precision of measurements taken of dental implants in bucco-lingually sectioned views of the maxilla by linear tomograms of the panorama and to assess the visibility of the inferior wall of the maxillary sinus. Materials and Methods : Eighty sites prepared with implants of gutta percha cone in the sockets of the upper premolars and molars of 10 dry skulls were radiographically examined using linear tomograms of panorama, and scanned coronally and axially by computed tomography. The differences in mm between the measurements in bucco-lingually sectioned images of maxillary alveolar bone and the true length and width of the implanted gutta percha cones were compared as mean values (mean) and standard deviations (SD) for each radiographic technique. Linear tomography of panorama was compared with computed tomography for visualization of the relationship between the inferior wall of maxillary sinus and the end of each implant. Results: The deviations between the actual implant length and the measured values taken from the linear tomograms (0.44±0.39 mm) was significantly less than the measured values from the multiplanar reconstructed images of the axially scanned computed tomogram (1.21 ± 0.90 mm). There was statistically significant difference (p < 0.05) between two techniques in the differences between the measurements and true implant length. The relationship of the inferior border of maxillary sinus with end of implant was worse identified with the linear tomogram of panorama (68%) than the multiplanar reconstructed image of axially scanned computed tomogram (99%). Conclusion: We could not find any differences in the accuracy of length measurement between the linear tomogram of panorama and computed tomogram, but computed tomogram allowed for a better visualization of the inferior wall of the maxillary sinus than the linear tomogram.

한의학 기초 고론

김재덕,Kim, Jae-Deok 대한한약협회 1998 大韓漢藥 Vol.2 No.-

초임계유체 정류법에 의한 어유지방산으로부터 EPA 와 DHA 의 분리

김재덕,임종성,이윤우 ( Jae Duck Kim,Jong Sung Lim,Youn Woo Lee ) 한국유화학회 1997 한국응용과학기술학회지 Vol.14 No.2

It was tested the possibility that EPA and DHA could be separated from fish oil fatty acid ethylester(FAEE) in the supercritical carbon dioxide rectification method. Experiments were carried out in the 1800㎜ tall and temperature gradient packed rectification column at the pressure of 100bar and carbon dioxide flow rate of 52.43NL/min. Experimental results showed that this method was useful to separate the FAEE by the relative volatility of the components. The maximum attainable concentration of EPA, DHA and both of them in product were 41%, 43% and 57% respectively in this rectification column wsing raw fish oil feed.

연구발표논문초록 : 젖은 벽탑에서 브롬화수소의 흡수에 관한 연구

김재덕,전해수,이윤용 ( JAE DUCK KIM,HAE SOO CHUN,YOON YONG LEE ) 한국화학공학회 1981 추계총회초록집 Vol.- No.-

할론대체 소화약제의 요건

김재덕,이윤용,Kim, Jae-Deok,Lee, Yun-Yong 한국화재보험협회 1995 防災와 保險 Vol.65 No.-

골판톰을 이용한 골밀도측정 참조체의 결정

김재덕,Kim Jae-Duk 대한영상치의학회 2002 Imaging Science in Dentistry Vol.32 No.3

Purpose: To determine the proper reference step wedge for digital Cu-Equivalent Image analyzing systems for measurement of bone density. Meterials and Methods : Radiograms of lumbar vertebrae phantom (1g/㎠) with 3 test copper step wedges of 0.03, 0.05 and, 0.1 mm thickness unit were taken and analyzed using NIH image software on a Macintosh personal computer. Measured densities of the lumbar areas in the Cu-Equivalent images made by utilizing 3 different copper stepwedges were compared with a known bone density. Results: The values of r2 for all copper equivalent images were over 0.99. The mean Cu-Eq value of lumbar in copper equivalent image made by a 0.1 mm copper stepwedge was 0.22 ± 0.06 mm and converted to hydroxyapatite density of 1.03 g/㎠. The stepwedges of 0.03 and 0.05 mm produced results having higher values than the actual known bone density. They did not show the blue and green color level that appeared in lumbar on color enhanced image. Conclusion : A copper stepwedge of adequate thickness and range of steps which can express the range of density of bone being measured should be used.