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CO₂고정을 위한 화학독립영양미생물 Aeromonas sp. strain JS-1의 분리 및 특성
배상옥,곽경오,이용운,김성준,정선용 전남대학교 촉매연구소 2000 觸媒硏究 論文集 Vol.21 No.-
The increase of CO2 in the atmosphere by fossil-fuel combustion has been recognized as a major cause of global warming. Thus many studies on CO2 removal from the combustion gas have been performed, and recently the techniques for biological CO2 fixation by photoautotrophs have also been developed, In this study, extensive screening was conducted to obtain micoorganism with high capability in fixing CO2, and its characteristics was investigated. As a result, a chemoautotrophs identified as a Aeromonas sp. strain JS-1 was isolated from the fresh water. The isolated strain used the molecular hydrogen and CO2 as an energy and a carbon source, respectively. Growth characteristics, which will be used in the development of a continuous culture system related in CO2 fixation, were examined in batch cultivation under conditions of various CO2 and NaCl concentrations, temperature, and pH. The results of the examination showed that the isolated strain had a good growth to high CO2 concentration(40%), indicating applicable in removing CO2 discharged from industries.
환기정도에 따른 수술실용 신발 종류가 수술실 오염에 미치는 영향 : How to Choose Suitable Shoes?
남경동,정혜선,박영신,원진희,주미자,성화신,이지혜,이병희,조경숙,배재춘 한국의료QA학회 2000 한국의료질향상학회지 Vol.7 No.1
Background : Various types of protective footwear have been used to minimize bacterial contamination in operating rooms. In recent years, debate has arisen concerning the need for use of such protective footwear. This study was designed to provide useful data about choosing shoes most suitable for the surgical environment. Methods : Between November, 1999 and January, 2000, we performed this experimental study by comparing effect of three types of shoes (i.e., disposable shoescover, operating room-restricted shoes, and ordinary shoes) on bacterial contamination of operating rooms equipped with two different ventilation systems (i.e., high air-change, low air-change) respectively. Data were collected during two-hour sham operations in which subjects and their activities were strictly standardized. Bacterial flora were sampled from the study area floor and air colony-counts were measured. Results : In experiments involving high air-change ventilation system, there was a significant difference of floor contamination between three types of shoes, but no difference of air contamination. Under low air-change system, there was a significant difference of both floor and air contamination between three types of shoes. Conclusion : The results show that protective footwear would be unnecessary in the operating room with high air-change ventilation system, but it is important to choose suitable shoes carefully under low air-change system. Therefore, the use of outdoor shoes can be considered under high air-change system, but it would seem sensible to apply their first use in less bloody operations at the day surgery center or out-patient department to prevent transfer of body fluid into the outside environment.
백종현,소창배,이은영,이지숙,신은경,박은호,서정아,양재홍,송준영,박선자,박요한,최영식 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2
Familial adenomatous polyposis (FAP) is an autosomal dominant syndrome, typically characterized by multiple colorectal adenomas and increased incidence of colorectal carcinomas if it is not treated. Moreover, a variety of extracolonic manifestation are seen. The prevalence of thyroid tumors developing in patients with FAP is about 1∼2%. Generally, papillary thyroid cancer indicates low mortality but ,however, as people get older, the cancer becomes more aggressive. So, the operation is required. Recently we experienced a case of FAP, presenting with papillary thyroid carcinoma, and reported with a brief review of literatures.
김재민,김성완,양수진,김선영,배경열,조준영,윤탁,신일선,윤진상 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.5
Objectives : This study aimed to investigate the associations between physical disorders and prevalent/incident insomnia m a community dwelling older population. Methods : 1,204 people aged 65 or over evaluated at baseline. Insomnia was defined as difficulty in initiation or maintenance of sleep on at least three nights per week over the last month. Reported physical disorders covering 11 common and generally chronic health problems were ascertained. Covariates included were age, gender, education, housing, Past occupation, current employment, and depression. Of 879 without insomnia at baseline, 651 (74%) were followed 2 years later, and incident insomnia was evaluated. Results : Prevalent insomnia was significantly associated with 10 of 11 physical disorders. Incident insomnia was associated with 2 physical disorders : eyesight problems and hearing difficulty. Both prevalent and incident insomnia were significantly associated with increased number of physical disorders. Conclusion : Certain physical disorders were comorbid and precipitating factors of insomnia in elders.
Bae, Soo Hyeon,Kwon, Min Jo,Park, Jung Bae,Kim, Doyun,Kim, Dong-Hee,Kang, Jae-Seon,Kim, Chun-Gyu,Oh, Euichaul,Bae, Soo Kyung American Society for Microbiology 2014 Antimicrobial Agents and Chemotherapy Vol.58 No.9
<P>Macrolactin A (MA) and 7-<I>O</I>-succinyl macrolactin A (SMA), polyene macrolides containing a 24-membered lactone ring, show antibiotic effects superior to those of teicoplanin against vancomycin-resistant enterococci and methicillin-resistant <I>Staphylococcus aureus</I>. MA and SMA are currently being evaluated as antitumor agents in preclinical studies in Korea. We evaluated the potential of MA and SMA for the inhibition or induction of human liver cytochrome P450 (CYP) enzymes and UDP-glucuronosyltransferases (UGTs) <I>in vitro</I> to assess their safety as new molecular entities. We demonstrated that MA and SMA are potent competitive inhibitors of CYP2C9, with <I>K<SUB>i</SUB></I> values of 4.06 μM and 10.6 μM, respectively. MA and SMA also weakly inhibited UGT1A1 activity, with <I>K<SUB>i</SUB></I> values of 40.1 μM and 65.3 μM, respectively. However, these macrolactins showed no time-dependent inactivation of the nine CYPs studied. In addition, MA and SMA did not induce CYP1A2, CYP2B6, or CYP3A4/5. On the basis of an <I>in vitro-in vivo</I> extrapolation, our data strongly suggested that MA and SMA are unlikely to cause clinically significant drug-drug interactions mediated via inhibition or induction of most of the CYPs involved in drug metabolism <I>in vivo</I>, except for the inhibition of CYP2C9 by MA. Similarly, MA and SMA are unlikely to inhibit the activity of UGT1A1, UGT1A4, UGT1A6, UGT1A9, and UGT2B7 enzymes <I>in vivo</I>. Although further investigations will be required to clarify the <I>in vivo</I> interactions of MA with CYP2C9-targeted drugs, our findings offer a clearer understanding and prediction of drug-drug interactions for the safe use of MA and SMA in clinical practice.</P>
Inactivation of various bacteriophages by different ultraviolet technologies
Kyung Seon Bae,Gwy-Am Shin 대한환경공학회 2016 Environmental Engineering Research Vol.21 No.4
There is an urgent need to identify more reliable indicator systems for human pathogenic viruses in water reuse practice. In this study, we determined the response of different bacteriophages representing various bacteriophage groups to different ultraviolet (UV) technologies in real wastewater in order to identify more reliable bacteriophage indicator systems for UV disinfection in wastewater. Bacteriophage φX174, PRD1, and MS2 in two different real wastewaters were irradiated with several doses of both low pressure (LP) and medium pressure (MP) UV irradiation through bench-scale UV collimated apparatus. The inactivation rate of φX174 by both LP and MP UV was rapid and reached ∼4 log10 within a UV dose of 20 mJ/㎠. However, the inactivation rates of bacteriophage PRD1 and MS2 were much slower than the one for φX174 and only ~1 log10 inactivation was achieved by the same UV dose of 20 mJ/㎠. Overall, the results of this study suggest that bacteriophage MS2 could be a reliable indicator for human pathogenic viruses for both LP and MP UV disinfection in wastewater treatment processes and water reuse practice.
18세 원발성 고혈압 환자에서 발생한 비Q파 심근 경색 1례
배경임,이재호,서우선,허민영,정수룡,조길현,이영민,김대경,김두일,김동수 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.3
Myocardial infarction in persons under the age of 45 years accounts for 6% to 10% of all myocardial infarction in the United states. In this age group, it is predominantly a disease of men. Important risk factors include a family history of myocardial infarction before age 55 years, hyperlipidemia, smoking, and obesity. Unlike older patients, approximately half of young patients have single-vessel coronary disease, and in up to 20%. The cause is not related to atherosclerosis. Coronary angiography may be warrannnnted in young patients with myocardial infarction to define the anatomy of the disease and to permit optimal management. We report case that was diagnosed non Q myocardial infarction with history of hypertension in the young women.
Microfluidic Generation of Graphene Bubbles for Ultralight, Strong, and Superelastic Materials
Seon Ju Yeo(여선주),Min Jun Oh(오민준),Hyun Min Jun(전현민),Minhwan Lee(이민환),Jung Gun Bae(배중건),Yeseul Kim(김예슬),Kyung Jin Park(박경진),Seungwoo Lee(이승우),Daeyeon Lee(이대연),Byung Mook Weon(원병묵),Won Bo Lee(이원보),Seok J 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.8