곁순의 화학적 방제가 연초식물의 생장량에 미치는 영향

이재흥,석영선,신주식,정찬문 충북대학교 엽연초연구소 2001 煙草硏究 Vol.18 No.-

This study was carried out to compare the effects of suckercides - Fatty alcohol(FA), Maleic hydrazide(MH) and Butralin - on the sucker control and growing characters of flue-cured tobacco leaves. Among the three suckercides, Butralin was treated at three different times, one day before topping, topping day and one day after topping, and at two different concentration, 1/30 and 1/60 water solution. The results are summarized as follows. Suckercide treated plot showed higher growth and weight of upper leaves than not-treated plots did. MH treated plot decreased numbers, fresh weight and dry weight of suckers compared to the other treated plots, and made the leaves shape narrow. The effect of Butralin on sucker control was lower than that of MH, but higher than that of FA. The yields when treated Butralin decreased compared to the yields when treated MH. Though there were no significant differences of yields and growing characters of leaves among the plots of three concentrations and two times of treating Butralin, it is recommended to apply 1/60 water solution of Butralin at topping time.

페넴계 항생제 faropenem의 주요 임상분리세균에 대한 항균력

김재석,심영숙,김의종 대한화학요법학회 2001 대한화학요법학회지 Vol.19 No.4

목적 : Faropenem에 대한 국내 임상 분리 균주의 감수성 여부를 파악하기 위하여 임상 환자에서 흔히 분리되는 통성 혐기성 세균을 대상으로 최소억제농도(MIC_)를 측정하였으며, 대조항생제로는 amoxicillin과 cefaclor를 사용하여 그 결과와 서로 비교하였다. 방법 : 시험 균종은 2000년과 2001년 서울대학교병원 임상병리과로 세균배양이 의뢰된 혈액, 객담, 소변 등 임상검체에서 분리된 균주로서 임상환자에서 흔히 분리되는 통성 혐기성 세균 총 523주를 대상으로 하였다. 미국 임상검사표준화협회(NCCLS)에서 권장하는 방법에 따라 S. pneumoniae를 제외한 모든 균종은 한천희석법으로 MIC를 측정하였으며, S. pneumoniae는 microdilution broth법으로 MIC를 측정하였다. 결과 : Faropenem의 MIC는 전반적으로 비교약제에 비해 전반적으로 낮았다. E. coli, K. pneumoniae에 대한 MIC_(90)는 각각 1㎍/mL, 2㎍/mL이었으며, E. aerogenes, C. freundii, M. morganii는 4㎍/mL, E. cloacae는 8㎍/mL의 결과를 보였다. S. marcescens, A. baumanni의 MIC_(90)은 16㎍/mL, 32㎍/mL를 보였으며, P. aeruginosa와 S. maltophilia에서는 64㎍/mL 이상으로서 항균력이 없었다. S. aureus와 S. epidermidis에서는 메티실린 내성인 경우는 MIC_(90)이 64㎍/mL이상, 8㎍/mL이었다. 메티실린 감수성인 경우 0.125㎍/mL와 0.125㎍/mL이었다. E. faecalis와 E. faecium의 경우 MIC_(90)은 모두 64㎍/mL 이상을 보였으나, E. faecalis의 경우 MIC_(90)이 1㎍/mL로서 항생제 내성인 균주가 일부 포함되어 MIC_(90)이 높아진 것으로 보인다. S. pneumoniae의 경우 MIC_(90)은 0.5㎍/mL이었다. 결론 : Faropenem은 E. coli, K. pneumoniae에 대해서도 우수한 항균력을 보였다. 대조항생제에 비해 faropenem의 Enterobacteriacae에 대한 항균력은 높았다. 앞으로 faropenem에 대한 추가 연구가 필요하며, 특히 경구용 제재로 사용할 경우 약력학적 연구가 필요할 것으로 생각한다. Background : Minimal inhibitory concentrations (MICs) of facultative anaerobic bacteria isolated from several kinds of specimens of patients were determined for the in vitro susceptibility against the new oral penem, faropenern and compared with MICs of amoxicillin and cefaclor in Korea. Methods : Total 523 strains isolated from blood, sputum, or urine of patients at Seoul National University Hospital in 2000 and 2001 were examined by agar dilution or microdilution broth method according to the recommendations of National Committee for Clinical Laboratory Standards. Results : In general, the MICs of faropenem against major clinical isolates were lower than those of amoxicillin and cefaclor. MIC data showed that faropenern was active against Escherichia coli (MIC_(90)= 1㎍/mL) and Klebsiella pneumoniae (MIC_(90) = 2㎍/mL). The MICwS of Enterobacter aerogenes, Citrobacter freundii, Morganella morganii were 4 ㎍/mL. The MIC_(90)s of Enterobacter cloacae, Serratia marcescens, and Acinetobacter baumannii were relatively raised, 8 ㎍/mL, 16 ㎍/mL, and 32 ㎍/mL, respectively. Faropenem was not active against P. aeniginosa and S. maltophilia (MIC≥64 ㎍/mL). Although for MRSA MICs were high (MIC_(90)>64 ㎍/mL) compared with those for MRSE (MIC_(90) = 8 ㎍/mL), faropenern was active against methicillin-susceptible staphylococci (MIC_(90) = 0.125 ug/nmL). For Enterococcus faecalis and Enterococcus faecium, the MIC_(90)s were > 64 ㎍/mL. However, MICs of E. faecalis (MIC_(90) = 1 ㎍/mL) seems to be overestimated by including some resistant strains. The MIC_(90) of faropenern against S. pneumoniae was 0.5 ㎍/mL Conclusions : Faropenem was more active against E. coli, K. pneumoniae, and S. pneumoniae than reference drugs. The in vitro activity of faropenern was in many cases superior to those of amoxicillin and cefaclor. Pharmacokinetic study is needed, especially for the use of faropenern as an oral drug.

벼 乾沓直播栽培時 播種期가 乾物生産에 미치는 影響

朴栽成,朴成圭,李尙榮,洪性澤,池在浚,趙東三,孫錫龍 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

This experiment was carried out to obtain indispensable information to establish comprehensive cultural method of rice in direct seeding on dry paddy at Chungbuk Agricultural Research and Extension Services. Effect of seeding date on dry matter production, yield components and yield were studied. Seeding on May 5 ensured the highest maximum number of tillers, while transplanting on May 20 gave the highest rate of effective tillers. Number of effective tillers was greater in the order of Hwajinbyeo, Hwaseongbyeo, Daekwanbyeo. Lengths of upper three leaves were increased at later seeding, but leaf width was not affected by seeding date. Ratio of leaf blade weight was higher in earlier seeding during 30 days before heading but was higher in later seeding during 30 days after seeding, and was higher in the order of Hwajinbyeo, Hwaseongbyeo, Daekwanbyeo. CGR, RGR and NAR were not significantly different among seeding dates during 30 days before heading, but were lower in later seeding during 30 days after seeding. LAR was not affected by seeding date during 30 days before heading, but was higher at seeding on May 5 in heading date and during 30 days after heading. Dry weight of leaf blade, leaf sheath and culm, ear and total biomass during 30 days before heading and heading were highest in May 5 seeding. Daekwanbyeo and Hwaseongbyeo in May 5 seeding and Hwajinbyeo in April 20 seeding brought the highest yield with greater number of spikelets, higher ripening ratio and greater 1,000 grain weight, and harvest index and grain/straw ratio were Increased at earlier seeding. There were significantly positive correlations between number of panicles per m2 and LAI at 30 days before heading and heading, dry matter weight of leaf blade and total mass at heading. On the other hand, there were significantly negative correlations between seeding date and ripened grain ratio. 1,000 grain weight and yield, and between 1,000 grain weight and leaf length of 2nd, respectively.

Rotary type과 linear type 자동흡연 장치에 따른 담배연기 중 타르, 니코틴 및 일산화탄소의 함량 비교

정재훈,김영신,임흥빈,석영선,신주식,이학수 충북대학교 연초연구소 2004 煙草硏究 Vol.19 No.-

본 실험은 type별 흡연 장치의 담배 주류연 포집에 대한 차이를 비교하고자 주류연 중 일반적인 다량의 성분을 측정하였다. 1. 니코틴 함량은 대체로 linear-type 흡연 장치에서 높은 경향 이였으나 유의한 차이는 없었다. 2. 수분 함량은 두 가지 type 간에 유의한 차이는 없었다. 3. tar 함량은 저 농도에서 linear-type 보다 otary-type 흡연 장치가 높은 경향 이였으나 유의한 차이는 없었다. 4. 일산화탄소는 rotary-type과 linear-type 모두 유의한 차이는 없었다. 본 실험결과 ISO 표준 흡연 조건에서 담배 주류연의 tar, 니코틴, 일산화탄소 함량의 측정은 흡연 장치의 type별 통계적으로 유의한 차이는 없는 것으로 판단된다. This study was conducted to compare rotary-type with linear-type automatic smoking machine referred to ISO 3308 in the determination of tar, nicotine and CO in cigarette smoke. Sample were used with 4 kinds of domestic branded cigarettes(tar ; 1, 3, 6, 10 mg/cig) and CORESTA Monitor 4 cigarettes(tar ; 14 mg/cig). Tar and nicotine contents were analysed by gas-chromatograph methods in accordance with ISO 4387 and 10315-1. Determination of carbon monoxide in the vapour phase of cigarette smoke was meaured by NDIR method in ISO 8454. Sample preparation were performed in conditioning room at 22℃, 60 % for 48 hours according to ISO 3402. There was no significant difference between two smoking machine from 1 mg/cig to 14 mg/cig tar cigarettes, but, the contents of three components measured by rotary type showed higher tendency than those by linear type in the case of hight tar cigarettes. The results were the opposite in low tar cigarettes.

벼 무논골뿌림裁培時 播種期가 生育 및 收量에 미치는 影響

池在浚,朴裁成,朴成圭,李尙榮,洪性澤,孫錫龍 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

This study was carried out to determine the optimum seeding date for the rice(Oryza sativa L.) cultivation of the puddled-soil drill seeding, which is one of the efficient labor saving cultural methods, at the central part of Korea. Namweonbyeo, Anjungbyeo and Ilpumbyeo were seeded on four dates from April 10 to May 25, 1994 with the 15 day interval in the paddy field. In order to examine the adequate seeding date, the growth characters, yield components and yields were investigated. The coleoptile emerged 1 or 2 days earlier in Namweonbyeo than in Anjungbyeo and Ilpumbyeo, and later seeding resulted earlier coleoptile emergence. The number of seedling stands were higher in the order of Namweonbyeo, Anjungbyeo and Ilpumbyeo, was increased at the later seeding and was 81 to 88 seedlings on April 10 seeding. The plant height, number of leaves, number of tillers and dry weight at 50 days after seeding of all three cultivars were higher at later seeding. Leaf area index(LAI) were higher in the order of Ilpumbyeo, Anjungbyeo and Namweonbyeo. LAIs at the heading stage, at 30 days after heading and at 30 days before heading were higher in that order. The dry matter weight at the 30 days before heading was higher in sheath and stem than that in leaf blade, while, at heading stage, it was higher in the order of sheath and stem, leaf blade and panicle. On the other hand, at 30 days after heading, it was higher in the order of panicle, sheath and stem and leaf blade. The number of panicles per m2 was greater in the order of Ilpumbyeo, Anjungbyeo and Namweonbyeo. The ratio of ripened grain was reduced as the later seeding date. Its ratio was higher in Namweonbyeo than in Anjungbyeo and Ilpumbyeo. Yield of Namweonbyeo was lower than those of Anjungbyeo and Ilpumbyeo. Yield was decreased as the seeding date was delayed. Namweonbyeo showed the highest yield at seeding on May 10, while Anjungbyeo and Ilpumbyeo showed at seeding on April 25. The seeding date was negatively correlated with the ratio of ripened grain. while the number of seedling stands was positively correlated with the number of panicle per m2.

생물계면활성제를 이용한 중금속 및 유기물 오염 토양의 정화

홍석정,현재혁,김영철 한국공업화학회 2002 응용화학 Vol.6 No.1

A study on the soil remediation was performed by using a biosurfactant. The surfactant solutions were applied to the soil flushing of the artificially contaminated soil with copper ion, cadmium ion and phenol. The optimal concentration of the surfactant was determined by the lab.-scale column tests using the solutions of various concentrations. The characteristic behavior of the contaminant removal was studied and the efficiencies of the soil flushing were determined for the contaminants.

구강저에 발생한 단독형 신경섬유종

김용각,유현석,곽재근,김규영,정붕희 大韓顎顔面成形再建外科學會 1990 Maxillofacial Plastic Reconstructive Surgery Vol.12 No.3

Benign neural sheath neoplasms are not common in the maxillofacial region. These lesions can occur as solitary tumors, or they can affect many sites in the form of multiple neurofibromatosis. A solitary neurofibroma is seldom undergo sarcomatous transformation, since solitary neurofibroma is relatively radioresistant and its recurrence rate seems to be low, the treatment of choice is surgical excision. This case showed a solitary neurofibroma in the left side of the floor of mouth which occurred in a 33 - year -old female. The tumor was excised. And there is no evidence of disease. She is satisfied in function and esthetic aspect.

벼 무논골뿌림栽培時 播種期 및 立毛數가 生育 및 收量에 미치는 影響

洪性澤,朴栽成,朴成圭,李尙榮,池在浚,孫錫龍 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

This study was conducted to establish the cultural techniques of the puddled-soil drill seeding of race (Oryza sativa L.), which is one of the efficient labor saving cultural methods, in the central part of Korea. Seoanbyeo was seeded at three times from April 10 to May 20 with the 20 day interval in 1994. The number of seedling stands per m2 at each seeding date were 50, 90, 130 and 170. The tillering characteristics, lodging characters, dry matter production, yield components and yield were investigated. The number of days to the maximum tillering stage was reduced at the later seeding date. It was 70, 55 and 25 days in seedings on April 10, April 30 and May 20, respectively. The critical effective tillering stage was also shortened at the delayed seeding. The higher the number of seedling stands was, the higher number of tillers, the shorter duration to the maximum tillering stage and the earlier critical effective tillering stage were resulted. The number of tillers was higher at the earlier seeding date. The number of tillers was increased in the order of 50, 90, 130 and 170 seedling stands per m2. The ratios of effective tillers were 53, 61 and 63% at seeding on April 10, April 30 and May 20, respectively. The ratios were not significantly different at April 10. But the ratios in seeding on April 30 and May 20 were reduced as the number of seedling stands was increased. The weight of stem base related to lodging was the highest with 2.01g/10 plants in the optimum seeding on April 30, while it was 1.59g/10 plants in the late seeding on May 20. It was also decreased as the number of seedling stands was increased. The dry weights at 30 days before the heading stage were increased at the later seeding, while the dry weight at the heading stage was the highest at seeding on April 30 which is considered as the adequate seeding time. The dry weights at 30 days before the heading stage were increased as the number of seedling stands was increased and they were increased up to 130 seedling stands per m2 at the heading stage. The length of panicle exsertion was shortened at the later seeding. The length of panicle exsertion was increased up to 130 seedling stands. but it was shorter at 170 seedling stands. The heading dates were later at seeding on April 30 and May 20 than at seeding on April 10. They were not remarkedly different among seeding dates at 50 seedling stands, it was earlier at the higher number of seedling stands over 90. The number of spikelets per panicle was decreased at the higher number of seedling stands. The ratio of ripened grains was higher at earlier seeding than at later seeding. It was not significantly different among the number of seedling stands at the same seeding time. Yields at seeding on April 30, April 10 and May 20 were 644, 624 and 551kg/10a, respectively. The seeding on April 30, the optimum seeding time, resulted the highest yield. Rice quality was decreased due to the increase of the green kerneled rice as the seeding date was delayed.

통계분석법을 이용한 영산강 유역의 수질평가

정희정 ( Hee Jeong Jeong ),허유정 ( Yu Jeong Huh ),이영재 ( Yeong Jae Lee ),김갑순 ( Kap Soon Kim ),유창석 ( Chang Seok Yoo ),임병진 ( Byung Jin Lim ) 한국물환경학회 ( 구 한국수질보전학회 ) 2010 공동 추계학술발표회 Vol.2010 No.-

The Early Science Results from the Galaxy Evolution Explorer

Lee, Yeong-Uk,Son, Yeong-Jong,Lee, Su-Chang,Lee, Jae-Hyeon,Lee, Chang-Hui,Lee, Seok-Yeong,Yun, Seok-Jin,Le, Jae-U,Ki, Seok-Hwan 한국우주과학회 2004 한국우주과학회보 Vol.13 No.1