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Associations of night shift status during pregnancy with birth outcomes
Se Jin Lee(Se Jin Lee),Chorong Kim(Chorong Kim),Eun Ju Lee(Eun Ju Lee),Myoung-Nam Lim(Myoung-Nam Lim),Jeeyoung Kim(Jeeyoung Kim),Sunghun Na(Sunghun Na),Woo Jin Kim(Woo Jin Kim),Ko-CHENS study group(Ko 한국환경보건학회 2022 한국환경보건학회 학술대회 자료집 Vol.2022 No.5
Chorong Lee,Soohwan Kim,Jaehyeong Shin,Min-Gi Kim,Buddhi E. Gunathilaka,Sung Hun Kim,Ji Eun Kim,Seung-Cheol Ji,Jee Eun Han,Kyeong-Jun Lee 제주대학교 해양과학연구소 2021 해양과환경연구소 연구논문집 Vol.45 No.-
This study was conducted to evaluate the dietary supplementation of two Bacillus spp. on digestibility, growth performance, innate immunity, and water ammonia level of Litopenaeus vannamei. A control diet was made without the probiotic supplementation, and four other diets were prepared by including B. subtilis (BS) alone (0.1 × 1010 and 0.2 × 1010) or a mixture of BS and B. pumilus (BP) (0.1 × 1010 and 0.2 × 1010). Quadruplicate groups of shrimp (0.14 g) were hand-fed one of the diets for 8 weeks. Shrimp fed diets containing Bacillus spp. showed significantly higher apparent digestibility coefficient of protein and dry matter than shrimp fed the control diet. The growth performance was significantly improved in shrimp fed higher dose (0.2 × 1010) of the Bacillus spp. compared to the control group. Innate immunity of shrimp fed the probiotic diets was significantly enhanced compared to the control group. In a water ammonia test, culture water of the probiotic diets had lower total ammonia concentration than that of the control diet. The results in this study suggest that Bacillus spp. can positively affect digestibility, growth performance, feed efficiency, innate immunity, and water quality for L. vannamei.
김정은 시대 북한의 습지 보전·이용 현황과 남북협력에 대한 시사점
김성환 ( Kim Seonghwan ),김민하 ( Kim Minha ),강초롱 ( Kang Chorong ) 평화문제연구소 2022 統一問題硏究 Vol.34 No.2
Since Supreme Leader Kim Jong-un took power, North Korea has recognized the importance of the wetland ecosystem, which is a major component of the natural ecosystem, and has been attempting to systematically manage, preserve, and use wetlands. North Korea's interest stands out in establishing foundation for the wetland management system, a cooperative system for wetland conservation and sustainable use, a wetland conservation system, and promoting wetlands. The change in North Korea's perception of wetland space is largely due to the re-recognition of ecosystem services provided by wetlands. In addition, changes of circumstance faced by North Korea, such as fostering tourism industry and need to participate in the implementation of sustainable development, served as a strong driving force behind the re-recognition of ecosystem services provided by wetlands. The North Korean authorities' interest in the preservation and use of wetlands is a welcome issue for the establishment of a community of life on the Korean Peninsula; and for the establishment of community of human. This is because the nature of wetlands inevitably requires cooperation and solidarity from the international community. It is necessary to elicit North Korea's demand for cooperation reflected in the change of wetland space perception and to gradually promote inter-Korean wetland cooperation based on the results.
김초롱(Chorong Kim),김수미(Sumi Kim),이소은(Soeun Lee),박선주(Sunju Park),정은미(Eunmi Jung),김현기(Hyenki Kim) 한국정보기술학회 2018 Proceedings of KIIT Conference Vol.2018 No.6
본 논문에서는 IoT 기술을 이용하여 전기, 수도, 가스의 양을 실시간으로 모니터링하고, 누적 사용량도 확인할 수 있는 시스템을 설계하였다. 상시 모니터링을 통해 누진세 예방 및 사용량을 조절하여 에너지를 절약하고, 환경을 보존할 수 있을 것이다. In this paper, IOT technology was used to monitor the amount of electricity, water, and gas in real time and design a system that can check cumulative usage. Through continuous monitoring, it will be possible to save energy and to preserve the environment by controlling the progressive tax and controlling the usage amount.
Chorong Kim,Haksoo Kim 한국방사성폐기물학회 2019 방사성폐기물학회지 Vol.17 No.1
고리 1호기는 원전해체 계획에 따라 영구정지 이후 가능한 한 빠른 시일 내에 원자로냉각재계통의 화학제염을 수행할 계획으로, 계통제염 기술 확보를 위해 한수원에서는 2014년부터‘원전 해체설계를 위한 냉각재계통 및 기기제염 상용기술 개발’연구과제를 통해 화학제염기술을 개발하고 있다. 본 연구를 위해 Lab. 규모 계통제염 공정장치를 제작하였으며, 계통제염 대상의 주요재료인 STS304, 316, 410, Alloy600, SA508을 사용하여 화학제염 공정실험을 수행하였다. 화학제염 공정실험의 목적은 산화-환원공정의 최적시간, 최적제염제 및 공정횟수를 도출하기 위함이다. 화학제염 공정실험은 과망간산-옥살산 기반의 단위공정 및 연속공정 실험, 과망간산+질산-옥살산 기반의 연속공정 실험으로 나누어 수행하였다. 그 결과 단위공정실험을 통해 최적공정 시간인 산화공정 5시간, 환원공정 4시간을 도출하였으며, 연속공정실험을 통해 최적제 염제와 공정횟수를 도출하였다. 최적제염제는 산화제의 경우 200 mg·L-1 과망간산 + 200 mg·L-1 질산이고, 환원제는 2000 mg·L-1 옥살산이며, 공정횟수는 STS304와 SA508의 경우 2 cycle, Alloy600의 경우 3 cycle 이상 수행하는 것이 적절할 것 으로 평가되었다. In accordance with the decommissioning plan for the Kori Unit 1 NPP, the reactor coolant system will be chemically decontaminated as soon as possible after permanent shutdown. This study developed the chemical decontamination process though the development project of decontamination technology of reactor coolant system and dismantled equipment for NPP decommissioning, which has been carried out since 2014. In this study, Oxidation/reduction process was conducted using system decontamination process development equipment of lab scale and was divided into unit and continuous processes. The optimal process time was derived from the unit process, and decontamination agent and the number of process were derived through the continuous processes. Through the unit process, the oxidation process took 5 hours and the reduction process took 4 hours. As optimum decontamination agent, the oxidizing agent was 200 mg·L-1 Permanganic acid + 200 mg·L-1 Nitric acid and the reducing agent was 2000 mg·L-1 Oxalic acid. In the case of the number of processes, all oxide films were removed during the two-cycle chemical decontamination process of STS304 and SA508. In the case of Alloy600, all oxide films were removed when chemical decontamination was performed for three cycles or more.
Kim, Sujin,Lee, Seonyeong,Shin, Chorong,Lee, Jangwoo,Kim, Sunmi,Lee, Aram,Park, Jeongim,Kho, Younglim,Moos, Rebecca K.,Koch, Holger M.,Kim, Sungkyoon,Choi, Kyungho Elsevier 2018 International journal of hygiene and environmental Vol.221 No.4
<P><B>Abstract</B></P> <P>Parabens and triclosan have been widely used in many personal care products and cosmetics. The endocrine disrupting potential of these compounds is of increasing public health concern. The aim of this study is to understand the current exposure profile of these chemicals in last void before bedtime (night-time) and first-morning void (first-morning) urines among a Korean population and to characterize their exposure sources and pathways.</P> <P>A total of 261 people, including infants (0–2 years), toddlers (3–6 years), children (7–12 years), adolescents (13–18 years), and adults (≥19 years), were recruited, and sampled for night-time urine and first-morning urine of the following day. Methyl (MeP), ethyl (EtP), propyl (PrP) and butyl paraben (BuP), and triclosan were measured in urine. The demographic characteristics, use of personal care products, and food consumption were obtained through a questionnaire.</P> <P>Among the target compounds, EtP and MeP were most frequently detected at the highest concentrations. The median concentration of EtP in night-time urine was 32.4 μg/L (interquartile range: 8.37–82.8 μg/L), which is higher than previously reported worldwide. Unlike other test compounds, compared to those measured from first-morning urine, the EtP concentrations were significantly higher in night-time urine, suggesting the presence of different exposure sources. Among adults, the MeP and PrP concentrations in night-time urine were associated with frequent use of skin care products, colored cosmetics, bath products, toothpaste, vinyl food packaging, or consumption of canned food. The MeP and PrP concentrations were higher in females than in males, especially in night-time urine. The results of this study also show that multiple urine samples are necessary to capture the diurnal variation of non-occupational exposure to environmental chemicals, such as parabens.</P>
( Chorong Ahn ),( Minkyeong Kim ),( Changmu Kim ) 한국균학회 2021 Mycobiology Vol.49 No.5
Three isolates belonging to the ascomycetous genus Zygotorulaspora were obtained from the fruits of Cornus officinalis and Smilax china, and flowers of Dendranthema zawadskii var. latilobum in Gongju-si, Korea. Phylogenetic Analyses of the LSU D1/D2 domain and ITS region sequences supported the recognition of two new species: Zygotorulaspora cornina sp. nov. (type strain NIBRFGC000500475 ¼ KACC93346P<sup>PP</sup>) and Zygotorulaspora smilacis sp. nov. (type strain NIBRFGC000500476 ¼ KACC93347P<sup>PP</sup>). The two novel species revealed no growth on D-Galactose, unlike the other six species in the genus Zygotorulaspora. They are distinguished from each other by their phylogenetic differences and phenotypic characteristics such as assimilation of xylitol, 5-keto-D-gluconate, and ethanol. All species in the genus Zygotorulaspora including the two novel species have phenotypic traits of genus Zygotorulaspora: asci are persistent, sucrose and raffinose are assimilated, and m-inositol is not required for growth, and they are mainly associated with plants.