감염근관에서 분리 배양한 세균의 수종 항생제에 대한 감수성 조사

임상수,김미광,민정범,김민정,박순낭,황호길,국중기,Lim, Sang-Soo,Kim, Mi-Kwang,Min, Jeong-Beom,Kim, Min-Jung,Park, Soon-Nang,Hwang, Ho-Keel,Kook, Joong-Ki 한국미생물학회 2006 미생물학회지 Vol.42 No.3

The aim of this study was to identify the bacteria isolated from endodontic lesions by cell culture and to determine the antimicrobial susceptibility of them against 8 antibiotics. The necrotic pulpal tissues were collected from 27 infected root canals, which were diagnosed as endodontic infection. Samples were collected aseptically from the infected pulpal tissue of the infected root canals using a barbed broach and a paper point. The cut barbed broaches and paper points were transferred to an eppendorf tube containing $500{\mu}l\;of\;1{\times}PBS$. The sample solution was briefly mixed and plated onto a BHI-agar plate containing 5% sheep blood. The agar plates were incubated in a $37^{\circ}C$ anaerobic chamber for 2 to 5 days. The bacteria grown on the agar plates were identified by comparison of 16S rRNA gene (rDNA) sequencing method at the species level. To test the sensitivity of the bacteria isolated from the infected root canals against 8 antibiotics, minimum inhibitory concentrations (MIC) were determined using broth dilution assay. The data showed that 101 bacterial strains were isolated and were identified. Streptococcus spp. (29.7%) and Actinomyces spp. (21.8%) were predominantly isolated. The 9 strains were excluded in antimicrobial susceptibility test because they were lost during the experiment or were not grown in broth culture. The percentage of bacteria susceptible for each antibiotic in this study was clindamycin, 87.0% (80 of 92); tetracycline, 75.0% (69 of 92); cefuroxime axetil, 75.0% (69 of 92); amoxicillin + clavulanic acid (5:1), 71.7% (66 of 92); penicillin G, 66.3% (61 of 92); erythromycin, 66.3% (61 of 92); amoxicillin, 44.6% (41 of 92); and ciprofloxacin, 31.5% (29 of 92). The susceptibility pattern of 8 antibiotics was dependent on the host of the bacteria strains rather than the kinds of bacterial species. These results indicate that antibiotic susceptibility test should be performed when antibiotics are needed for the treatment of infected root canals.

폐 소결절 환자를 대상으로 한 CT-guided Wire Marking Procedure에 대한 유용성 평가

임상수(Sang Soo Lim),신상보(Sang Bo Shin),김문찬(Moon Chan Kim) 대한CT영상기술학회 2010 대한CT영상기술학회지 Vol.12 No.1

Purpose To prospectively assess the safety and effectiveness of computed tomography(CT)-guided marking using a wire before video-assisted thoracoscopic surgery for small pulmonary nodules, with characteristics and excision methods of pulmonary nodule suspicious to primary lung cancer. Materials and methods For June 2008 to July 2009, 35 patients(13 men, 22 women; range 34-75, mean age, 56 years) with Surgical removal for small pulmonary nodules were included in prospective study. With 4 channel CT scanner, the guided material was used 10 mm long, 21 gauge spring-hook type wire. Results The average CTDIVOL, effective close for each procedure were 7.80⊕3.16 mGy, 3.71⊕1.4 mSv respectively. Needle tip were completely targeted in nodule at 12(34.3%) out of 33 persons, at 13 persons(37%) into the direction of pleura and at 10 persons(28.6%) into the parenchyma rather than nodule. The mean diameter of the nodules, measured by CT scans, was 10.2⊕4.9 mm and ranged 0.3 mm to 2.8 mm. The distance of the nodules to visceral of pleura was 16.3⊕7.7 mm and ranged 4mm to 35 mm. From lesion characteristics of ground-glass opacity, pathological findings of adenocarcinoma was 29(82.8%). Metastatic cancer and immflamation were 3 persons (8.6%) respectively. In the procedure there was no complication in 19 persons(57.1%). tiny pneumothorax and hemorrhage were 13 persons(37.1%) and 2 persons(5.8%) respectively. And additional intervention was not required. Conclusion CT-guided marking wire procedure was very efficient with low radiation close, and minimizing to patients unrest in terms of low complications and simple procedure. Also it was useful study which could help minimizing resection of lung parenchyma including the nodule.

환율이 항공 화물 수송량에 미치는 영향

임상수 ( Sang Soo Lim ) 한국항공경영학회 2009 한국항공경영학회지 Vol.7 No.3

This paper explains if the relationship between the air cargo and exchange rate is proportional or not. Two explanatory variables(real exchange rate and U.S. Industrial Production Index) are used to estimate the Korea air cargo function. At first, the cointegration test derives a long-term equilibrium relationship among these three variables. So the model to be estimated has to be the Error Correction Model to represent this cointegration relationship. The result shows that the U.S. Industrial Production Index has the proportional relationship with the air cargo in the short-and long-term. But it is proven that the air cargo decreases if the exchange rate increases in the short-and long-term.

신성장 서비스업으로서의 녹색서비스 육성을 위한 정책 방안에 관한 연구

임상수 ( Sang Soo Lim ) 전북대학교 사회과학연구소 2011 지역과 세계 Vol.35 No.2

This study is trying to analyze why the service industry is important. The service industry can change the structure of manufacture-oriented industry and accomplish the green growth in Korea. It explained how the change of domestic and foreign environment has the effect on the service and manufacture industry. And the Climate Change is likely to have the negative effects on the korean companies. Some of the service industries can help those companies minimizing risk caused by Climate Change. Those service industries are defined as green service industry including consulting service, financial service, IT service and meteorological service. But the policy about consulting service, financial service, IT service and meteorological service is still not enough despite they are important in minimizing the corporate risk related to climate change. The government has to make the policy to foster those green service industries as soon as possible.

취득세 감면이 주택 수요에 미치는 영향에 관한 연구

임상수(Sang Soo Lim) 서울연구원 2013 서울도시연구 Vol.14 No.2

주요 도시별 전기 소비 특성에 관한 연구

임상수(Sang-Soo Lim) 서울연구원 2009 서울도시연구 Vol.10 No.2

자치구 복지지출 부담 분석

임상수(Sang Soo Lim) 한국재무행정학회 2022 재무행정연구 Vol.2 No.1

원유 가격에 대한 휘발유 가격의 비대칭성

임상수(Sang-Soo Lim) 에너지경제연구원 2007 에너지경제연구 Vol.6 No.2

중소기업의 주요 경영 지표로 살펴본 제조업 업종 간 수렴성 분석

임상수(Sang-Soo Lim),최항석(Hang-Seok Choi) 한국자료분석학회 2020 Journal of the Korean Data Analysis Society Vol.22 No.4

본 연구는 중소기업 제조업 부문에 대한 주요 경영 지표를 분석하여. 업종별로 균형 발전하는지를 분석하는 것을 목적으로 한다. 특히, 본 연구에서 경영 지표는 성장성, 생산성, 효율성으로 구분하다. 성장성 지표로는 매출액과 매출액 증가율을 활용하고, 생산성 지표로는 연구개발비 대비 매출액과 인건비 대비 매출액을 활용하며, 효율성 지표로는 부가가치율과 총자본투자효율을 활용한다. 이를 바탕으로 각 지표별로 중소기업의 업종을 상위, 중위, 하위 그룹으로 구분한다. 또한 본 연구가 관심을 두는 가설인 중위 그룹의 경영 지표는 상위 그룹의 경영 지표에 수렴하는지와 하위 그룹의 경영 지표는 중위 그룹의 경영 지표에 수렴하는지를 검정한다. 이러한 가설을 검정하기 위한 분석 방법으로는 추세 검정, 군집 분석, 클럽 수렴성 검정을 활용한다. 분석결과, 모든 지표에 대해 중위 그룹은 상위 그룹에 수렴하지 않는 것으로 나타났다. 또한 하위 그룹 역시 모든 지표에 대해 중위 그룹에 수렴하지 않는 것으로 나타났다. 이는 중소기업 역시 대기업과 마찬가지로 일부 상위 그룹에 포함되는 업종을 중심으로 발전하고 있다는 것을 의미한다. This study aims to analyze key management indicators for SMEs in the manufacturing sector. In particular, this study divides key management indicators into growth, productivity and efficiency. This paper use sales and sales growth as indicators for growth, sales to R&D(Research and Development) and sales to labor cost as indicators for productivity, and value-added rate and total capital investment efficiency as indicators for efficiency. Based on this, the sectors of SMEs are classified into upper, middle, and lower groups. In addition, the hypotheses that this study is interested in, are whether the upper group and the middle group converge and the middle group and the lower group converge. To test these hypotheses, this study carries out trend tests, cluster analysis, and club convergence tests. As a result of the analysis, for all indicators, the middle group does not converge on the upper group. In addition, lower group does not converge on the middle group for all indicators. This means that small and medium-sized enterprises are also developing mainly in the industries included in some upper groups.

금융위기가 KOSPI 수익률과 거래량 변화율에 미친 영향

임상수(Sang-Soo Lim) 한국산업경제학회 2016 산업경제연구 Vol.29 No.3

본 연구는 수익률과 거래량 변화율의 변동성 간 관계 및 수익률 변동성과 거래량 변화율 간 관계를 분석했고, 글로벌 금융 위기가 수익률과 거래량 변화율에 어떠한 영향을 미쳤는지를 살펴보는 것을 목적으로 한다. 분석을 위해 Granger 인과성 검정과 함께 TGARCH 모형이 활용되었다. 먼저 수익률과 거래량 변화율 간 관계를 분석한 결과, 수익률은 거래량 변화율에 대해 Granger 인과관계가 성립하지만, 거래량 변화율은 수익률에 대해 Granger 인과관계가 성립하지 않았다. 또한 수익률은 혼합분포가설이 성립한 반면 거래량 변화율은 순차적 정보도착가설이 성립한 것으로 나타났다. 이는 거래량 변화율은 수익률 변동성에 영향을 미치지 못하지만, 수익률은 거래량 변화율의 변동성에 영향을 미쳤다는 사실에서 알 수 있다. 그리고 글로벌 금융 위기는 수익률 및 거래량 변화율을 하락시킨 반면 투자 위험을 나타내는 수익률의 변동성과 거래량 변화율의 변동성을 증가시켰다. 이는 글로벌 금융 위기가 투자 위험을 증가시킨 반면 수익률을 하락시켰다는 것을 의미한다. 마지막으로 악재와 호재에 대한 비대칭성을 검정한 결과, 수익률 변동성은 호재보다 악재에 더 민감한 반면 거래량 변화율의 변동성은 악재와 호재에 대해 대칭적으로 반응했다. This paper is trying to explain the relationship between the return and the trading volume in Korea‘s stock market. Especially, the relationship between the volatility of return and the trading volume, the relationship between return and the volatility of trading volume, and the effect of the global economic crisis on the return and the trading volume are analyzed. Granger"s causality test and TGARCH model are used to analyze these relationships. First of all, the return has Granger causality with the trade volume but the trade volume does not have Granger causality with the return. And the mixture of distributions hypothesis is accepted in the return but the sequential information arrival hypothesis is accepted in the trade volume. This means that the trading volume can not affect the return but the previous return can affect the trading volume. In addition, the return and the trading volume are decreased but the volatility of the return and the volatility of the trading volume are increased by the global economic crisis. Finally, the response of the volatility of the return to the bad news is greater than the good news. But the volatility of the trading volume responds to the good news and the bad news symmetrically. These results can give a lot of information to investors in the stock market.