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2017년 제주시 대기 중 PM<sub>2.5</sub>의 화학적 조성과 오염원 추정
김수미 ( Su-mi Kim ),김길성 ( Kil-seong Kim ),현성수 ( Sung-su Hyun ),김정하 ( Jeong-ha Kim ),김명찬 ( Myeong-chan Kim ),김봉진 ( Bong-jin Kim ),이기호 ( Ki-ho Lee ) 한국환경분석학회 2018 환경분석과 독성보건 Vol.21 No.2
In this study, to characterize chemical compositions and identify the sources of PM<sub>2.5</sub> in the urban area of Jeju, Korea, PM<sub>2.5</sub>-bound concentrations of 8 ionic species and 12 elements were measured from samples collected at the downtown area from January to December 2017. Positive matrix factorization (PMF) was applied to these PM<sub>2.5</sub> data-sets to identify the diverse sources in Jeju City. The average PM<sub>2.5</sub> mass concentration for the study period was 18.31±9.72 μg/m<sup>3</sup>. The contributions of water-soluble ionic species, elements and unknown components to PM<sub>2.5</sub> mass were 55.8%, 2.1%, and 42.0%, respectively. PMF analysis showed that a total of six source types were identified to be important. These sources are the industry related source, secondary sulfate and oil combustion, soil, biomass burning and vehicles, secondary nitrate, and sea salt.
우리나라 양식 흰다리새우, Litopenaeus vannamei에 대한 법정전염병 모니터링 (2010~2013)
김수미 ( Su Mi Kim ),최민지 ( Min Ji Choi ),김석렬 ( Seok Ryel Kim ),강서경 ( Seo Kyeong Kang ),황혜연 ( Hye Yeon Hwang ),장인권 ( In Kwon Jang ),김진우 ( Jin Woo Kim ),지보영 ( Bo Young Jee ),신기원 ( Ki Won Shin ),박명애 ( Myoun 한국어병학회 2014 한국어병학회지 Vol.27 No.2
수산생물질병관리법이 제정·시행 (2009)된 이후 매년 우리나라 양식산 흰다리새우에 대한 국내미발생 법정전염병을 모니터링하고 있다. 최근 외래질병의 유입가능성이 증가함에 따라 질병 감시를 강화하고자 조사대상 법정전염병을 2종 (YHD, IMN)에서 5종 (YHD, IMN, IHHN, TS, WTD)으로 확대하고 조사지역과 양식장 개소를 매년 상향 조절하여 실시하였다. 2013년에는 지정 법정전염병5종에 대해 흰다리새우 종묘생산장 및 양식장 29개소에서 총 2,650마리의 샘플을 조사한 결과, 검사한 모든 시료에서 바이러스가 검출되지 않았다. 새우 양식장에서의 향후 새로운 질병 유입에 대한 위험성을 낮추고 국가적 질병관리 및 차단 방역을 위해서는 지속적인 질병 예찰 및 질병 감시가 필수적일 것이다. Since the "Aquatic life disease control act" was established in 2009, we have monitored OIE notifiable and legally designated diseases which are associated with white shrimp Litopenaeus vannamei but are as yet outbreak in South Korea. We had monitored only two viral diseases of YHD and IMN, but further added IHHN, TS and WTD in an attempt to reinforce monitoring as a countermeasure against the increasing possibility of imported diseases led by continuous growth in global fisheries trade. We also increased the number of monitoring areas, and shrimp farms. In 2013, we examined a total of 2,650 white shrimp from 29 hatcheries and farms to check whether they were infected with any of the 5 diseases (YHD, IMN, IHHN, TS, WTD). The result showed that none of the samples contained the viruses. To regulation of the exotic diseases from landing in our country and to strengthen prevention, management and control of the diseases on a national level, we must continue the surveillance monitoring of the diseases.
표준화 환자를 활용한 수혈 간호 실습교육이 간호대학생의 문제해결능력과 학습만족도에 미치는 효과
김수미(Kim, Su Mi),박민정(Park, Min Jung),양야기(Yang, Ya Ki) 기본간호학회 2015 기본간호학회지 Vol.22 No.4
Purpose: This study was conducted to investigate the effects on problem solving ability and learning satisfaction in nursing students using a teaching method with a standardized patient (SP) receiving blood transfusion. Method: The research design was a quasi-experimental pre-and-post-test control and experimental group for the methodological comparison study. Participants were 43 (Exp.=22, Cont.=21) nursing students in G city. The experimental group participated in the teaching class using SP. The control group received conventional education using a simple model. Data were collected between June 5 and July 15, 2015, through self-report structured questionnaires and data were analyzed using the SPSS/WIN 21.0 program. Results: There were significant differences in the level of problem solving ability (t=-2.75, p=.009), and learning satisfaction (t=-2.53, p=.016) between the experimental and control groups. Conclusion: The research findings indicate that, the teaching method using an SP is more effective in improving nursing students’ problem solving ability and learning satisfaction compared to conventional education using a simple model. In the future it is necessary to develop scenarios of various cases and content, and to test their effectiveness.
이기호,김수미,김길성,허철구,Lee, Ki-Ho,Kim, Su-Mi,Kim, Kil-Seong,Hu, Chul-Goo 한국환경과학회 2020 한국환경과학회지 Vol.29 No.5
This study investigated the nitrate formation process, and mass closure of Particulate Matter (PM) were calculated over the urbanized area of Jeju Island. The data for eight water-soluble inorganic ions and nineteen elements in PM<sub>2.5</sub> and PM<sub>10</sub> were used. The results show that the nitrate concentration increased as excess ammonium increased in ammonium-rich samples. Furthermore, nitrate formation was not as important in ammonium-poor samples as it was in previous studies. According to the sum of the measured species, approximately 45~53% of gravimetric mass of PM remained unidentified. To calculate the mass closure for both PM<sub>2.5</sub> and PM<sub>10</sub>, PM chemical components were categorized into secondary inorganic aerosol, crustal matter, sea salt, trace matter and unidentified matter. The results by the mass reconstruction of PM components show that the portion of unidentified matter was decreased from 52.7% to 44.0% in PM<sub>2.5</sub> and from 45.1% to 29.1% in PM<sub>10</sub>, despite the exclusion of organic matter and elemental carbon.
허철구,김수미,이기호,Hu, Chul-Goo,Kim, Su-Mi,Lee, Ki-Ho 한국환경과학회 2020 한국환경과학회지 Vol.29 No.1
To determine the size distributions of water-soluble inorganic ionic species (WSIS) in roadside aerosols, sampling experiments were carried out in the urban roadside area of Jeju City on August 2018 and January 2019 by using the eight-stage cascade impactor sampler. The mass of roadside aerosols were partitioned at 57% in fine fraction, 36-37% in coarse fraction, and 6-7% in giant fraction, regardless of summer and winter. The mass concentrations of WSIS except for Na+ and SO42- in roadside aerosols were higher in winter than in summer. The size distributions of Na<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup> and Cl<sup>-</sup> were characterized by bimodal types with coarse particle mode peaking around 3.3-4.7 ㎛ and 5.8-9.0 ㎛. The size distributions of NO<sub>3</sub><sup>-</sup> and K<sup>+</sup> shifted from a single fine mode peaking around 0.7-1.1 ㎛ in winter to bimodal and/or trimodal types with peaks around coarse mode in summer. SO<sub>4</sub><sup>2-</sup> and NH<sub>4</sub><sup>+</sup> showed a single fine mode peaking around 0.7-1.1 ㎛. The MMAD of roadside aerosols was lower than that of Na<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup> and Cl-. Based on the marine enrichment factors and the ratio values of WSIS and the corresponding value for sea water, the composition of roadside aerosols in Jeju City may be practically affected by terrestrial sources rather than marine source.
이기호,김수미,허철구,Lee, Ki-Ho,Kim, Su-Mi,Hu, Chul-Goo 한국환경과학회 2021 한국환경과학회지 Vol.30 No.9
Measurements on mass size distribution of roadside aerosols were obtained in downtown Jeju City from July 2018 to May 2020 using an 8-stage cascade impactor sampler and the compositions of aerosols were analyzed. The mass size distribution of total aerosols was bimodal with aerosols existing in both the fine and coarse modes. The mass size distributions of Na<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup>, Cl<sup>-</sup>, NH<sub>4</sub><sup>+</sup> and SO<sub>4</sub><sup>2-</sup> were unimodal, whereas that of K<sup>+</sup> was bimodal. For NO<sub>3</sub><sup>-</sup>, the size distribution in winter and spring was bimodal with the peaks in both fine and coarse modes, whereas for summer and autumn the distribution was unimodal with a peak in the coarse mode. NH<sub>4</sub><sup>+</sup> was found to co-exist with SO<sub>4</sub><sup>2-</sup> in the fine mode with an average molar ratio of [NH<sub>4</sub><sup>+</sup>]/[SO<sub>4</sub><sup>2-</sup>] equal to 2.05. Good correlation was observed between NO<sub>3</sub><sup>-</sup> and NH<sub>4</sub><sup>+</sup> in the fine mode particles in spring and winter. Based on the value of the marine enrichment factor for Cl<sup>-</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, Ca<sup>2+</sup> and SO<sub>4</sub><sup>2-</sup>, it may be inferred that a major part of the roadside aerosols in downtown Jeju City was largely contributed by terrigenous sources, although the influence of sea salt was normally present.
제주시 도심지역에서 여름철과 겨울철의 미세먼지 중 수용성 이온 조성
이기호 ( Ki-ho Lee ),김수미 ( Su-mi Kim ),허철구 ( Chul-goo Hu ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.5
This study was carried out to elucidate the chemical compositions of water-soluble inorganic ions in PM<sub>10</sub> and PM<sub>2.5</sub> aerosols collected during summer and winter in downtown Jejusi city. The ratios of NO<sub>3</sub> <sup>-</sup> to the total mass of ionic species in PM<sub>10</sub> and PM<sub>2.5</sub> aerosols largely increase in winter compared to summer, while SO<sub>4</sub> <sup>2-</sup> ratios in both aerosols appear to follow the opposite trend. Moreover, concentrations of Na<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup> and Cl<sup>-</sup> in PM<sub>10</sub> and PM<sub>2.5-10</sub> aerosols are higher in winter than in summer. The nitrate concentrations in PM<sub>10</sub> and PM<sub>2.5</sub> aerosols increase with an identical increase in excess ammonium during winter, however, nitrate formation during summer is not important owing to ammonium-poor conditions.
길기철 ( Ki Cheol Kil ),남선영 ( Sun Young Nam ),김수미 ( Su Mi Kim ),하재은 ( Jae Eun Ha ),류기성 ( Ki Sung Ryu ),이영 ( Young Lee ) 대한주산의학회 2009 Perinatology Vol.20 No.4
Fetal cardiac tumors are a rare condition and are histologically benign. Cardiac rabdomyoma is the most common cardiac tumor and may be associated with tuberous sclerosis. Clinical follow-up including monitoring of fetal well-being is warranted as long as the fetus remains asymptomatic and there is no evidence for hydrops fetalis. If obstruction to blood flow and/or early fetal compromise is noted, then the decision of whether to deliver early must be made. We report a case of fetal cardiac tumor diagnosed by antenatal ultrasonography and diagnosed as tuberous sclerosis with brain MRI scanning after birth.