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오늘 본 자료
이효진,지주원,Lee, Hyo-Jin,Jee, Ju-Won 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.4
In this study, the comfort properties of bamboo knitted fabrics were evaluated and compared with those of cotton and bamboo-cotton blend knitted fabrics before and after loess dyeing. As a result, it was found that appearance density, air permeability, coefficient of thermal conductivity, and deodorization rate of bamboo knitted fabrics were greater than those of cotton knitted fabrics. After loess dyeing, W/T values of knitted fabrics increased due to adhesion of loess to the surface of fiber and pore filling. WC/W value of all knitted fabrics decreased representing that fabric become harder and less fullness. After loess dyeing, air permeability, warmth retaining property, and water absorption capacity of knitted fabrics were decreased and deodorization of knitted fabrics was improved. Overall, bamboo-cotton blends are good alternative for well-being textiles because they have the advantages of both cotton and bamboo fabrics.
급경사지 자연 및 인공 비탈면 평가표 개선에 관한 기초연구
이효진,윤홍식,이현지,김윤희 한국재난정보학회 2020 한국재난정보학회 학술대회 Vol.2020 No.11
2009년 이래로 11년간 총 7회에 걸쳐 평가표가 개정되었으나 현재까지 옹벽축대, 자연비탈면, 인공비탈면 3개 유형 모두 개 정 중에있다. 하지만 일부 명칭변경 및 추가, 삭제에 그친 개정과 2018년도에 조사자 보정점수의 항목 추가 정도만 이루어졌다. 따라서 본 논문에서는 자연 및 인공비탈면에 대한 평가표를 개정하기 위한 개선 방향의 기초연구를 수행하였다. 자연비탈면과 인공비탈면 모두 많은 강우로 인한 붕괴 가능성이 매우 높으며 지형과 토양, 임상에 따라서 같은 위험성을 가진다. 이로인해 자연 및 인공비탈면을 통합하여 공통지표와 선택지표로 나눈 후 표면보호공의 유무, 역할, 유지보수 상태에 대한 저감성을 고 려하고자 하였다. 평가표 개정을 위한 기초 연구로서 본 논문에서는 국내외 문헌 16개를 조사하여 242개의 지표를 분석하였으 며 기존의 평가표를 개정하고자 공통지표와 선택지표로 분류하였다. 추후에 점수형 평가 와 전문가 서술형 평가 2가지 방식을 이용해 평가를 진행하고자 하였으며 지표 분석을 통해 평가표의 신뢰성을 확보하고자 하였다.
이효진,배수명,최용금,곽선희,김현숙,김혜진,임근옥,임희정,장선옥,한양금,신보미 한국치위생학회 2020 한국치위생학회지 Vol.20 No.5
Objectives: The purpose of this study was to develop applicable standards for clinical dental hygiene practice in Korea and to evaluate their validity. Methods: Based on the standards for clinical dental hygiene practice developed in the United States and Canada, the standards were adapted to be applicable in Korea. The validity of the standards was evaluated by a self-writing questionnaire among 14 professors and 10 clinicians using a developed tool for evaluating the standards. A focus group interview was additionally conducted for clinicians to increase the validity of the standards. Descriptive statistics and Mann-Whitney test were performed using SPSS 25.0. To analyze the content of the focus group interviews, content analysis was conducted. Results: The standards for clinical dental hygiene practice consisted of five elements of professionalism for dental hygienists and a total of 28 items to perform the five stages of dental hygiene process of care (assessment, diagnosis, planning, implementation, and evaluation) and included conceptual meaning, clinical significance, and application methods with examples for each item. Conclusions: The standards for clinical dental hygiene practice developed in this study could contribute to standardizing dental clinical practices provided by dental hygienists. It is necessary to consistently improve the standards that are highly practical, to prevent oral diseases and maintain oral health of the public, based on the results of this validity evaluation.
이효진,김재호,이재구,박태준,김종진 한국에너지학회 1995 에너지공학 Vol.4 No.3
0.5 T/D 용량의 슬러리를 이용한 분류층가스화기에서의 인도네시아 탄인 Roto탄을 이용한 가스화 실험을 통하여 개발된 가스화기의 성능과 석탄가스화 특성을 파악하였다. 200 mesh 이하로 분쇄된 미분탄을 62.5%(H2O/coal=0.6)로 물과 혼합된 슬러리를 0.5%의 유도화제와 화재의 20%의 CaO를 화재의 융점강하를 위하여 첨가시켰다. 화재의 융점이 1511$^{\circ}C$에서 130$0^{\circ}C$까지 떨어진 것이 관측되었다. 생성된 슬래그는 Quenching 부위에서 물에 의한 급랭으로 인한 열 충격으로 1~2 cm의 크기로 분쇄되었다. 실험결과 생성된 가스는 CO는 O2/coal의 비가 증가할수록 감소하였고, H2 및 CO2는 증가하는 것으로 관찰되었다. 생성된 가스의 발열량은 천연가스의(10,000 Kcal/Nm3)/약 1/8인 1700~1300 Kcal/Nm3로 측정되었다.
이효진,최재기,조성연,김시현,박선희,최수미,이동건,최정현,유진홍 대한감염학회 2016 Infection and Chemotherapy Vol.48 No.3
Background: Carbapenemase-producing Enterobacteriaceae (CPE) are Gram-negative bacteria with increasing prevalence of infection worldwide. In Korea, 25 cases of CPE isolates were reported by the Korea Centers for Disease Control and Prevention in 2011. Most CPE cases were detected mainly at tertiary referral hospitals. We analyzed the prevalence and risk factors for carbapenem- resistant Enterobacteriaceae (CRE) in a mid-sized community-based hospital in Korea. Materials and Methods: We retrospectively analyzed all consecutive episodes of Enterobacteriaceae in a mid-sized community- based hospital from January 2013 to February 2014. CRE was defined as organisms of Enterobacteriaceae showing decreased susceptibility to carbapenems. Risk factors for CRE were evaluated by a case–double control design. Carbapenemase was confirmed for CRE using a combined disc test. Results: During 229,710 patient-days, 2,510 Enterobacteriaceae isolates were obtained. A total of 41 (1.6%) CRE isolates were enrolled in the study period. Thirteen species (31.7%) were Enterobacter aerogenes, 8 (19.5%) Klebsiella pneumoniae, 5 (12.2%) Enterobacter cloacae, and 15 other species of Enterobacteriaceae, respectively. Among the 41 isolates, only one (2.4%) E. aerogenes isolate belonged to CPE. For evaluation of risk factors, a total of 111 patients were enrolled and this included 37 patients in the CRE group, 37 in control group I (identical species), and 37 in control group II (different species). Based on multivariate analysis, regularly visiting the outpatient clinic was a risk factor for CRE acquisition in the control group I (P = 0.003), while vascular catheter and Charlson comorbidity index score ≥3 were risk factors in control group II (P = 0.010 and 0.011, each). Patients with CRE were more likely to experience a reduced level of consciousness, use a vasopressor, be under intensive care, and suffer from acute kidney injury. However, CRE was not an independent predictor of mortality compared with both control groups. Conclusion: In conclusion, the prevalence of CRE was higher than expected in a mid-sized community-based hospital in Korea. CRE should be considered when patients have a vascular catheter, high comorbidity score, and regular visits to the outpatient clinic. This study suggests the need for appropriate prevention efforts and constant attention to CRE infection control in a midsized community-based hospital.