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Macrolide계 항생물질 동시분석법 확립 및 모니터링
박상욱(Sang-Ouk Park),이상호(Sang-Ho Lee),안종훈(Jong-Hoon Ahn),정영지(Young-Ji Jung),김성철(Seong-Cheol Kim),김지연(Ji-Yeon Kim),금은희(Eun-Hee Keum),성주현(Ju-Hyun Sung),김상엽(Sang-Yub Kim),장영미(Young-Mi Jang),강찬순(Chan-Soon K 한국식품과학회 2010 한국식품과학회지 Vol.42 No.3
축산물 중 macrolide계 항생물질 3종을 신속분석하기 위하여 효과적인 전처리법을 설정하고 고속액체크로마토그라피(HPLC)를 이용한 동시분석법을 제시하였다. 대상물질은 tilmicosin, tylosin, spiramycin이며, 확립된 분석법을 이용하여 모니터링을 실시하기 위하여 전국 6개 도시인 서울, 부산, 대전, 인천, 대구, 광주에서 수입원산지가 표시된 쇠고기와 돼지고기 및 그 가공품을 수거하여 분석하였다. 전처리법에 있어서 solid phase extraction(SPE)법에 비하여 액상추출법이 더 높은 회수율을 나타내었으며 전처리 단계도 간단하여 대상 항생물질을 분석하기에 적절하였다. 3종의 항생물질 분리를 위한 컬럼은 C18(250 ㎜×4.6 ㎜, 5 ㎛)을 사용하였으며, HPLC 이동상은 0.025M phosphate buffer(pH 2.5) 및 acetonitrile을 이용한 gradient 조건을 설정하였다. UV 검출파장은 spiramycin 경우 232 ㎚이고, tilmicosin과 tylosin은 288 ㎚을 이용하였다. 평균회수율은 83.0-90.2%이였으며, 검출한계는 각각 7(spiramycin), 12(tilmiconsin), 12(tylosin) ng/g으로 나타났다. 수입 축산물의 항생물질에 대한 안전성을 검토하기 위하여 국내 유통중인 수입축산물 및 그 가공품을 대상으로 하여 모니터링을 실시한 결과, 시료는 전국 6개 대도시에서 126건 구입하였으며 모든 시료에서 macrolide계 항생물질이 검출되지 않았다. In this study, a simple and rapid pre-treatment method based on liquid extraction was applied for the simultaneous determination of three macrolides (spiramycin, tylosin, and tilmicosin) residues. In these studies, the stock farm products was used as a matrix sample. When the liquid extraction method was compared with the solid phase extraction (SPE) method, the former showed higher recovery percentages and simpler steps than the latter. The macrolids were separated using a reverse-phase C18 (250 ㎜×4.6 ㎜, 5 ㎛) column and a gradient elution with mobile phases consisting of phosphate buffer (pH 2.5) and acetonitrile. Tylosin and tilmicosin were detected at 288 ㎚ and spiramycin was detected at 232 ㎚. The average recovery percentage ranged between 83.0-90.2% for samples spiked with the three macrolids at 50 and 100 ng/g The validation results showed that the limit of detection (7 (spiramycin), 12 (tilmiconsin), 12 (tylosin) ng/g)) was under the regulatory tolerances and the linearity from calibration curves was satisfactory for determining the multi-residue of three macrolids in farm products. Monitoring samples were collected at the main cities in Korea as Seoul, Busan, Deajeon, Incheon, Deagu, and Gwangju. Microlide antibiotics were not detected in most samples.
최두림 ( Doo-rim Choi ),성주현 ( Ju-hyun Sung ),이정식 ( Jung-sic Lee ) 한국정보처리학회 2020 한국정보처리학회 학술대회논문집 Vol.27 No.2
가상환경 홈 트레이닝 시스템은 바이러스, 날씨, 환경 등으로 인해 외부활동이 제한된 경우 실내에서도 실외에서 운동하는 것과 같은 효과를 얻기 위하여 구성하였다. 사용자는 실내에서도 vr 기기를 사용함으로써 가상환경을 통해 보다 실감나는 환경으로 운동을 할 수 있다
Aggressive 비호즈킨 림프종의 예후인자 분석과 고위험군 환자 선별을 위한 International Prognostic Index Model
김경태(Kyung Tae Kim),김태유(Tae You Kim),임영혁(Young Hyuck Im),강윤구(Yoon Koo Kang),이창희(Chang Hee Lee),곽영임(Young Im Kwak),류백렬(Baek Yeol Ryoo),성주병(Ju Byeung Sung),이영우(Young Wo Lee),장은정(Eun Jung Jang),김재학(Jae Ha 대한내과학회 1997 대한내과학회지 Vol.53 No.3
N/A Objective: Although the therapeutic outcome of aggressive non-Hodgkin's lymphoma (NHL) has been considerably improved by the introduction of combination chemotherapy, many patients still fail to achieve complete response(CR) and/or long-term survival. Because the outcome appears to depend on certain prognostic factors, long term prognosis can be predicted by identification of risk group. And also, the patients in high risk group may benefit from new therapeutic modality. In 1993, the international prognostic index model for aggressive NHL as developed far the purpose of predicting outcome and designing of therapeutic trial. Thus, analysis of prognostic factors was performed to identify independent factors for the end points of CR, overall survival, and disease-free survival. Methods : From 1989 to 1994, total 340 patients were treated with combination chemotherapy and/or radiotherapy for NHL in Korea Cancer Center Hospital. Among 340, informations on eleven prognostic factors(sex, age, performance status, Ann Arbor stage, serum LDH level, tumor size, number of extranodal disease sites, bone marrow involvement, presence of B symptom, sex, time to CR, and histologic grade) were avaliable for 273 patients. Among these, 221 patients with aggressive NHL(NCI clinical schema) were eligible for the prognostic factor analysis for the response and survival. Also, 186 patients were eligible to determine whether International Prognostic Index Model could be applicable for Korean NHL. Results: One hundred fifty patients(68%, 95% CI 62-74%) achieved a complete remission, 43 patients (20%) a partial remission. With a median follow-up of 3,5 years, overall 3 year survival rate was 6396, and 3 year DFS for the 150 CRs was 72%. In a univariate analysis for the CR and survival, Ann Arbor stage, number of extranadal disease, performance status, presence of B symptoms, presence of BM involvement, serum LDH level and histologic grade were found to be statistically significant prognostic factors. Among them, by multivariate analysis, number of extranodal disease(RR 0.2, 95% CI 0.1-0.7), B Symptoms (RR 0.4, 95% CI 0.2-0.9), and histologic grade(RR 0.2, 95% CI 0.08-0.7) showed to be independent adverse prognostic factors for CR. For disease-free survival, Ann Arbor stage(RR 2.6, 95% CI 1.1-6.4) was independent risk factor. For overall survival, number of extranodal involvement(RR 2, 95% CI 1.3-4) and histologic grade(RR 2, 95% CI 1.2-3.7) were independently significant prognostic factors. With these 2 independent prognostic factors for survival, we could establish a prognastic index model which could separate the high risk patients. However, the usefulness of this model should be confirmed in a larger patient population. The dose intensity of cyclophosphamide, during initial 3 months of treatment, was significantly associated with CR rate and overall survival(p=0.01 & 0.03, respectively). When International Prognostic Index Model was applied to our patients, patients in the lower risk groups had significantly better outcome than patients in the higher risk groups(3 year survival and RR: 77% & 1 for low risk group, 61% & 1.9 for low-intermediate risk group, 50% & 2.2 for high-intermediate risk group, and 25% & 6 for high risk group). Conclusion: In this study, we confirmed that features other than the Ann Arbor stage were independently associated with CR and survival, and the International Prognostic Index Model would be an useful tool for the selection of high-risk patients who could be benefited from more aggressive chemotherapy.
광도가 내음성이 서로 다른 3 수종의 광합성 생리에 미치는 영향
김판기(Pan Gi Kim),이용섭(Yong Sub Yi),정동준(Dong Jun Chung),우수영(Su Young Woo),성주한(Joo Han Sung),이은주(Eun Ju Lee) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.4
In this study, three tree species (Populus euramericana, Kalopanax pictus and Quercus serrata) exhibiting different levels of shade tolerance were employed to investigate photosynthetic responses to the lower light condition on forest floors. Chlorophyll contents, spectral properties and photosynthetic characteristics were examined by using the tree species grown under high light intensity (PPFD 920μmol m^(-2) s^(-1)) or low light intensity (PPFD 80μmol m^(-2) S^(-1)) . Plants grown under the low light intensity tended to have reduced leaf area, chlorophyll content per unit leaf area, light absorption and respiration in the shade intolerant tree species of P. euramericana. However, the shade tolerant species K. pictus and Q. serrata showed increased leaf area, chlorophyll content and net apparent quantum yield. Therefore, light absorption and light utilization efficiency were improved under the low light intensity. Also shade tolerant species maintained activities of photosystems and CO₂ fixation systems with little changes in low light intensity condition.
수정-IPA를 통한 푸드카빙교육 효용성의 품질속성 분류에 관한 연구
이성주(Lee, Sung-Ju),임현철(Lim, Hyun-Cheo),김상미(Kim, Sang-Mi) 한국외식경영학회 2022 외식경영연구 Vol.25 No.2
본 연구는 푸드카빙 교육을 받은 수강생들이 지각하는 푸드카빙 효용성은 어떠한지 살펴보고, 어떠한 효용성들이 있고, 효용성의 품질 속성은 어떠한지 살펴보고자 하였다. 이러한 연구목적을 규명하기 위하여 푸드카빙 교육을 받은 경험이 있는 수강생을 모집단으로 설정하였고, 설문조사는 2020년 7월 20일부터 8월 20일까지 한 달간 진행되었다. 설문지는 총 500부를 배부하였고, 435부가 회수되었고, 불성실한 설문지 38부를 제외하고 397부가 최종 분석에 사용되었다. 분석결과, 중요 실행 요소로는 푸드카빙 교육은 지루하지 않고, 남녀노소 할 수 있고, 잡생각이 사라지고, 자존감이 높아지고, 자신의 가치가 높아지고, 마음이 편해지고, 우울함이 사라지는 등의 수업 자체에서 오는 만족감의 속성들이 포함되었다. 매력적 요소에는 푸드카빙 기술이 수익으로 연결되고, 강좌를 개설하고, 적은 금액으로 공방을 오픈하는 등의 수익 측면과 관련된 항목들이 포함되었다. 아울러, 기본적 요소에는 집중할 수 있고, 기분이 좋아지고, 자격증을 취득하고, 전문가가 될 수 있다는 측면의 항목들이 포함되었다. 이는 대체로 푸드카빙을 처음 배우는 수강생들이 기본적으로 가지는 목적들이 포함되었다. This study aims to examine the food carving utility perceived by students who received food carving education, the types of the utility, and its quality attributes. To investigate this research purpose, students who had received food carving education were set as a population, and the survey was conducted for one month from July 20 through August 20, 2020. 500 copies of the questionnaire were distributed in total, and 435 copies were collected. 397 copies were used in the final analysis, excluding 38 unreliable copies. As a result of the analysis, important execution factors included the attributes of satisfaction with the class itself, e.g., Food carving education was not boring; it could be done by men and women of all ages; it made cockeyed ideas disappear; it promoted their self-esteem; it enhanced their value; it comforted their hearts; and it made their depression disappear. Attractive elements included revenue-related items, such as food carving skills connected to profits; they could open lectures; and they could open a workshop with little money. Along with this, the basic elements included the following: They could concentrate; they could feel better; they could get a certificate; and they could become an expert. They usually included the purposes the students who would learn food carving for the first time had basically.