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- 저자 : Lee Unhee (검색결과 5 건)
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Lee Unhee,김성은,Lee Seung Yeob,Wi Hang Nam,Choi Okja,Park Ji-Won,Kim Dahee,Kim You Jung,Shin Hwa Young,Kim Mihee,Kim Eun Ji,Kang Seung-Ji,Jung Sook-In,Park Kyung-Hwa 대한의학회 2021 Journal of Korean medical science Vol.36 No.24
Background: South Korea has been experiencing a third wave of coronavirus disease 2019 (COVID-19) since mid-November 2020. Our hospital in Gwangju metropolitan city experienced a healthcare-associated COVID-19 outbreak early in the third wave. The first confirmed COVID-19 patient was a symptomatic neurosurgery resident with high mobility throughout the hospital. We analyzed the transmission routes of nosocomial COVID-19 and discussed infection control strategies. Methods: We retrospectively analyzed the severe acute respiratory syndrome coronavirus 2 reverse transcription-polymerase chain reaction (RT-PCR) testing results according to time point and evaluated transmission routes. Results: Since COVID-19 was first confirmed in a healthcare worker (HCW) on 11/13/2020, we performed RT-PCR tests for all patients and caregivers and four complete enumeration surveys for all HCWs. We detected three clusters of nosocomial spread and several sporadic cases. The first cluster originated from the community outbreak spot, where an asymptomatic HCW visited, which led to a total of 22 cases. The second cluster, which included patient-to-patient transmission, originated from a COVID-19 positive caregiver before diagnosis and the third cluster involved a radiologist and a banker. We took measures to isolate Building 1 of the hospital for 17 days and controlled the outbreak during a period of increasing community COVID-19 prevalence. Universal screening of all inpatients upon admission and resident caregivers was made mandatory and hospital-related employees are now screened monthly. Conclusion: Infection control strategies to prevent the nosocomial transmission of emerging infectious diseases must correspond with community disease prevalence. Our data reinforce the importance of multi-time point surveillance of asymptomatic HCWs and routine surveillance of patients and caregivers during an epidemic.
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Kim Chang Seong,Kim Uh Jin,Lee Yoonjung,Lee Unhee,Choi Okja,Kim Sun-Hee,Lee Kwangho,Chung Yoon-Seok,Choi Hong Sang,Bae Eun Hui,Ma Seong Kwon,Kim Seong Eun,Kang Seung-Ji,Jung Sook-In,Kim Soo Wan,Park K 대한감염학회 2023 Infection and Chemotherapy Vol.55 No.1
Background: Determination of the release from isolation for coronavirus disease 2019 (COVID-19) in immunocompromised patients who need additional hospitalization for treatment of non-COVID-19 related disease is important to prevent nosocomial transmission. However, there is insufficient evidence for an extended isolation period. Materials and Methods: In September 2021, when the Delta variant was dominant, a nosocomial outbreak of COVID-19 occurred in the nephrology ward of a tertiary hospital in Gwangju, Korea. We conducted epidemiological investigations and whole-genome sequencing (WGS) of this virus. Results: A man who underwent kidney transplantation was admitted to our hospital for the treatment of acute kidney injury. He was diagnosed with asymptomatic COVID-19 infection during a pre-admission screening test on September 1, 2021 and underwent isolation. After 10 days of isolation in the COVID-19-designated ward, he was transferred to the general nephrology ward. He underwent steroid pulse therapy (September 17 to September 23, >60 mg/day prednisolone) due to acute T-cell rejection. On September 28, 2021, the first patient with COVID-19 was identified in the nephrology ward, and a rapid-response team was activated to identify additional patients with COVID-19 and prevent the spread of COVID-19. Epidemiological investigations revealed that 12 patients, two caregivers, and three healthcare workers from the nephrology ward were diagnosed with COVID-19. The WGS of specimens from 14 nosocomial outbreak samples and released an index patient exhibited the same Delta variant originating from the B.1.617.2 lineage. This hospital-acquired COVID-19 outbreak in the nephrology ward resulted in two (11.7%) deaths in patients who underwent kidney transplantation. Conclusion: We demonstrated that an immunocompromised patient can cause a nosocomial outbreak due to the prolonged shedding of infectious viruses. Prolonged isolation in patients under active immunosuppressive therapy may be necessary to prevent transmission, especially in the hospital setting.
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상온재생아스콘을 활용한 기계화경작로 포장 적용 가능성 평가
공길용 ( Kilyong Kong ),이형근 ( Hyung Keun Lee ),백재석 ( Jaesuk Baik ),강문성 ( Munsung Kang ),최호철 ( Hochul Choi ),김운희 ( Unhee Kim ) 한국농공학회 2010 한국농공학회 학술대회초록집 Vol.2010 No.-
석유가 나지 않고 부존자원이 없는 우리나라는 그 동안 석유 위주의 경제성장으로 오늘의 기반을 이루었지만, 그 한계는 이미 고정되어 있다. 또한 갈수록 지구 온난화로 인해 세계 경제강국은 탄소배출을 적게 하고 환경규제를 거친 제품이어야만 세계시장에서 경쟁력을 갖출 수 있는 구도로 세계경제 메카니즘을 변화시키고 있다. 또한 부존자원이 천연골재인 국내자원 고갈시한이 20년 앞으로 도래하였으며, 연간 약 20%씩 급증하는 건설폐기물의 자원 재활용 및 활용이 절실한 상황이며, 저비용 고효율의 친환경 순환골재를 개발해야할 시점에 와 있다. 여기에서 소개되는 상온재생아스콘은 가열공정 없이 상온에서 생산, 시공할 수 있고, 따라서 외부의 심한 온도변화에도 영향을 받지 않으며 특히 상온재생 아스콘을 제조하는 과정에서 온실가스를 배출하지 않는 환경친화적인 도로포장공법이다. 일정 과정을 거쳐 재생된 아스콘을 대상으로 품질시험을 실시한 결과 마샬안정도 28kN 이상, 안정도 손실율 16% 이하, 공극율 13.1%로 현재 국토해양부 ‘도로포장지침’의 품질기준을 상회하는 결과를 얻었다. 기계화경작로에 적용 가능성을 평가하기 위하여 경기 김포시에 시험포장(L:130m, B:3.0m, T;0.1m)을 실시하였으며, 경제성을 평가한 결과 기존 기계화경작로 포장 시공비 대비 약 80%의 시공비로 가능할 것으로 판단되었다. 시공현장에서 코어를 채취하여 품질시험(마샬안정도, 안정도 손실율 등)을 실시한 결과 품질기준을 만족시키는 것으로 나타났으며, 시공 후 약 2일 후부터 교통개방도 가능하였다. 이와 같이 재활용골재를 이용하여 기계화경작로 포장을 실시하게 될 경우 재료에 대한 품질관리가 확보된다면 경제성은 물론 시공성도 확보될 것으로 판단되었으며, 교통개방시기도 줄일 수 있어 농번기에도 시공이 가능하며, 더 나아가 골재부족현상 해소 및 환경훼손 방지에도 기여할 수 있을 것으로 판단된다.
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대학로 공연장 집적의 장소성과 관람 행동에 따른 공연성과에 관한 연구: 공연예술통합전산망(KOPIS)과 K-MEANS 군집 알고리즘에 기반으로
왕연주(Yeunju Wang),이승현(Seunghyun Lee),최언희(Unhee Choi) 한국디지털콘텐츠학회 2024 한국디지털콘텐츠학회논문지 Vol.25 No.1
This study utilized KOPIS data to examine performance outcomes and pattern changes based on the behavior of ticket buyers, with a specific focus on the placeness of a performance theater agglomeration in Daehakro. To this end, we extended the theory of planned behavior to conceptualize the relationship between the placeness of Daehakro and the behavioral attitudes of ticket-buying audiences and developed a framework that incorporates the characteristics of performing arts products. Through exploratory data analysis of KOPIS aggregate extracts and k-means cluster analysis, we identified that the characteristics of ticket purchasers and performing arts products exert varying expected effects on the placeness of the university district. This finding provides important insights, serving as a predictor and determinant of attendance behavior.
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