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      • SNG 생산용 공기분리공정의 공기 재 압축비에 따른 민감도 분석

        김미영,주용진,서동균,신주곤,Kim, Mi-yeong,Joo, Yong-Jin,Seo, Dong Kyun,Shin, Jugon 한국전력공사 2019 KEPCO Journal on electric power and energy Vol.5 No.3

        심랭식 공기분리공정은 공기를 액화시켜 질소와 산소, 아르곤 등 다양한 산업가스를 생산하며, 가스생산조건(순도, 종류)에 따라 공정 또한 달라진다. 그 중 SNG 플랜트 공급용 공기분리공정은 99.5% 이상의 초고순도 산소 생산을 요구하기 때문에 공정의 효율이 타 공기분리공정에 비해 떨어지며, 공정효율을 낮추는 요인에는 공기압축에 의한 소모동력이 대표적이다. 본 연구에서는 SNG 플랜트에 적용하는 공기분리공정의 에너지 효율 향상을 위하여 소모동력과 관련된 공기 압축 설비의 민감도 분석을 수행하였다. 민감도 분석을 위해 ASPEN PLUS를 이용해 공기분리공정을 모사하였다. 모사 결과, 99.5% 이상의 산소 18.21 kg/s를 생산하였으며, 33.26 MW의 동력이 소모되었다. 모사된 공정 중 공기압축설비는 주 압축기 1대와 2대의 재 압축기가 있으며, 2대의 재압축기에서의 공기압축비 변화에 따른 고압질소, 저압산소, 저압질소의 유량과 순도에 대한 영향과 공정 내 소모동력 변화에 대해 분석하였다. 분석 결과, 99.5% 산소, 99% 질소(고압), 90% 질소(저압)를 생산하기 위한 최적의 운전조건은 재압축비가 각각 0.48, 0.50가 되었으며, 재압축비 조정 후 $0.507kWh/O_2kg$에서 $0.473kWh/O_2kg$으로 소모동력도 약 7%가량 줄었음을 확인하였다. Cryogenic air separation unit produces various gases such as $N_2$, $O_2$, and Ar by liquefying air. The process also varies with diverse production conditions. The one for SNG production among them has lower efficiency compared to other air separation unit because it requires ultrapure $O_2$ with purity not lower than 99.5%. Among factors that reduce the efficiency of air separation unit, power consumption due to compress air and heat duty of double column were representatives. In this study, simulation of the air separation unit for SNG production was carry out by using ASEPN PLUS. In the results of the simulation, 18.21 kg/s of at least 99.5% pure $O_2$ was produced and 33.26 MW of power was consumed. To improve the energy efficiency of air separation unit for SNG production, the sensitivity analysis for power consumption, purities and flow rate of $N_2$, $O_2$ production in the air separation unit was performed by change of air boosting ratios. The simulated model has three types of air with different pressure levels and two air boosting ratio. The air boosting ratio means flow rate ratio of air by recompressing in the process. As increasing the first air boosting ratio, $N_2$ flow rate which has purity of 99.9 mol% over increase and $O_2$ flow rate and purity decrease. As increasing the second air boosting ratio, $N_2$ flow rate which has purity of 99.9 mol% over decreases and $O_2$ flow rate increases but the purity of $O_2$ decreases. In addition, power consumption of compressing to increase in the two cases but results of heat duty in double column were different. The heat duty in double column decreases as increasing the first air boosting ratio but increases as increasing the second air boosting ratio. According to the results of the sensitivity analysis, the optimum air boosting ratios were 0.48 and 0.50 respectively and after adjusting the air boosting ratios, power consumption decreased by approximately 7% from $0.51kWh/O_2kg$ to $0.47kWh/O_2kg$.

      • KCI등재

        1920년대 신여성과 기독교의 연관성에 관한 고찰

        김미영(Kim Mi Yeong) 한국현대소설학회 2004 현대소설연구 Vol.- No.21

        In the 19th century, some of the foreign evangelists came to Cho-Sun. First of all, the foreign evangelists had engaged in Christian mission to the Korean women indirectly, as usually as with educations and medical services. Korean women`s general reaction to the Christianity was positive because of the principal of equality brought with the new religious idea. This is why most of the leaders of Cho-Sun`s women were Christians. The concept of New Women was made in the early 1920`s in Korea after being imported by the young Korean intellectuals studied in Japan. The first generation of Korean women writers and leaders of new women group are Rha Hae Seuk. Kim I1 Yup. and Kim Myeung Soon, all of whom studied abroad. The New Women meant the educated women and the modernized ladies. Most of the New Women at that time were Christians. That is why the Christianity and the New Women has a very close relationship. They both stand for the principle of educational equality for men and women. Rha Hae Seuk, Kim I1 Yup. Kim Myeung Soon also were Christians. Their works of literature and their lives were based on Christianity in their early writing days. However, as time went by. their beliefs turned into another religion, ana they converted usually into the Buddhism. There are three reasons for their conversions. The first thing was the Confucian patriarchal system of Korean traditional culture. The second was their superficial understanding of the Christianity. The last reason was the egocentrism of the New Women`s discourses and thoughts. Christianity is diametrically opposite to egocentrism and Confucian patriarchal value system. The more they kept away from the Christianity. the more their lives and literal works become careless and complicated.

      • KCI등재

        유교가족이념에 나타난 여성존재의 이중성

        김미영(Mi Yeong Kim) 철학연구회 2014 哲學硏究 Vol.0 No.106

        Today Confucianism is located in an intersection where the love and the hatred are crossed in that it is an alternative value as well as a target of overcoming. Particularly, the criticism of family egoism salient to comments of Confucianism began to be expressed as Western thought flowed into East Asia, because of the position that a family as a private domain is separated from a nation as a public one. Now, investigating the ideas of Confucian family from a woman viewpoint, I will try to approach Confucian values posed as alternative ones in this contemporary society, by revealing discrepancy between the family values projected in the argument of Confucian patriarchalism emerging in the modern period and Confucian values. Thereby I will disclose the social phenomenon making virtuous women appear in the later Chosun through the ideas of Confucian family. For this, first I will present the point that in what is regarded as the ideas of Confucian family is the conventional viewpoint on a family prior to its contact to Western civilization mixed with the perspective on a family established upon the modern law system as a result of debates developed as Western civilization flowed into East Asia before and after the 20th century. Besides, in 1910s Max Weber was a help in Confucian society being regarded as a stagnant one by spreading Confucian patriarchalism by way of connecting Confucianism with Western way of patriarchalism. However, if this kind of patriarchalism were accepted, it would be difficult to explain the social phenomenon bringing out virtuous women in the later Chosun. Therefore, I will have a new understanding of Confucian values blocked out by the modern ideas of family based on the values of filial piety, by revaluating the discourses on virtuous people or unvirtuous ones, and explain the social phenomenon through which virtuous women appeared by the ideas of Confucian family.

      • SCOPUSKCI등재
      • KCI등재

        이상은의 "한국유학사관"과 “도의정신(道義精神)” -국정국사교과서에 반영된 "실학관" 비판을 중심으로

        김미영 ( Mi Yeong Kim ) 고려대학교 철학연구소 2014 철학연구 Vol.0 No.50

        본고에서는 한국유학사 전개과정을 도의정신의 구현과정으로 바라보고 있는 이상은의 한국유학사관을 통해 한국신유학자로 불리는 이상은 철학사상이 지닌 의미를 살펴보았다. 이는 문명담론에 의거한 한국유학사 기술을 통속적 실학관이라고 비판하는 과정에서 선명하게 드러난다. 그가 비판하고 있는 통속적 실학관의 특징은 첫째, 실학과 성리학을 전연 별개의 학문처럼 보고 있으며, 둘째, 실학만 실을찾는 학문이요 성리학은 공리공담만 하는 학문이며, 셋째, 실학의 성격을 반주자학적인 것으로 본다는 것이다. 이와 같은 통속적 실학관은 20세기 한국철학사 기술에 뿌리깊게 내재되어 있던 관점이다. 이러한 관점은 1920년대 다카하시 도루의 한국유학사관과 1930년대 한국학자들 에 의해 제창된 조선학 운동에 따른 실학자의 재조명 과정이 상호결합되면서 이루어졌다고 할 수 있다. 20세기를 지배했던 이와 같은 한국유학사관은 한국유학사 기술과정에서 전통적으로 한국유학에서 중시했던절의정신이나 도의정신에 기반한 도통관념을 배제하고 문명담론을 중심에 놓은 결과물이라 할 수 있다. 이상은은 통속적 실학관을 비판하면서 이러한 20세기 문명담론을 비판하고 다시금 한국유학사에서 절의정신이나 도의정신을 복권시키고자 하였다. 이러한 관점은 1966년 현상윤의 유교공죄론을 재평가하는 과정에서 가시화된 것이라 할 수 있다. 현상윤은 군자학이라는 측면에서 유학의 긍정적인 면모를 지적하고 있기는 하나, 그 역시 문명담론 속에서 한국유학사를 기술하고 있으므로 그의 한국유학사관은 이상은이 비판하고 있던 통속적 실학관에서 크게벗어나있지 않다. 이에 이상은은 절의정신에 대한 불철저한 인식을 견지하고 있다고 하며 현상윤을 비판하였던 것이다. 20세기 문명담론에대한 비판적 성찰이 활발하게 이루어지고 있는 현재 이상은의 한국유학사관은 문명담론을 비판하는 일보를 내딛은 것이라 평가할 수 있다. This paper deals with so-called Korean New Confucianist, Lee Sang-Eun’s philosophical idea, through his viewpoint on Confucian History in Korea where he regarded its development process as that of morality realization. It is evidently revealed in the course of his criticizing that describing Korean Confucian History based upon the discourse on civilization leads to popular ideas of Silhak. The characteristics of this popular ideas of Silhak he found fault with are as follows: first, it completely separates Silhak from Confucianism; second, it sees Silhak is the only learning pursuing actuality, while Confucianism results in just empty discourses; third, it regards characteristics of Silhak as anti- Confucianism. This position was what lay deep-rootedly when Korean philosophical history was described in the 20th century. It can be said that it was formed in the process that Takahashi Toru’s viewpoint in the 1920s on Korean Confucian History was combined with the re- illumination of Silhak based on Korean Confucianism movement introduced by Korean scholars in the 1930s. This dominant position in the 20th century was the result of emphasizing the discourse on civilization in describing Korean Confucian History, leaving out the ideas of the consistent Dao on the ground of morality or integrity thought highly of traditionally. Criticizing popular ideas of Silhak, Lee Sang-Eun tried to restore morality or integrity in Korean Confucian History through blaming the discourse on civilization. This point of view was highlighted in the middle of revaluating Hyun Sang-Yun’s discussion on the complicity of Confucianism. He indicated the positive points of Confucianism from the aspect of virtuous person’s learning, but he also described Korean Confucian History on the basis of the discourse on civilization. Therefore, he couldn’t free largely himself from popular ideas of Silhak Lee Sang-Eun found fault with. This was why Lee Sang-Eun criticized his incomplete recognition of morality. From the contemporary viewpoint where critic reflection on the discourse on civilization in the 20th century is active, it can be valued that Lee Sang-Eun’s position on Korean Confucian History is a stepping stone to criticizing the discourse on civilization.

      • 캐슈 섭취 후 발생한 식품알레르기

        김미영 ( Mi Yeong Kim ),강민규 ( Min Gyu Kang ),이서영 ( Suh Young Lee ),강성윤 ( Sung Yoon Kang ),심은진 ( Eun Jin Shim ),정재우 ( Jae Woo Jung ),강혜련 ( Hye Ryun Kang ) 대한천식알레르기학회 2011 천식 및 알레르기 Vol.31 No.3

        Background: Cashew (Anacardium) is a tree nut allergen which can induce severe symptoms, including anaphylaxis. However, only a few cases of tree nut allergies have been reported in Korea and Japan. We experienced a case of cashew allergy. Case History: A-27-year-old female patient presented with facial urticaria, lip edema, conjunctiva injection, nausea, vomiting, and voice change after eating cashew. The patient suffered from recurrent symptoms after eating food containing cashew. Results: We measured specific immunoglobulin E (IgE) to various tree nuts in serum using the Pharmacia CAP system and confirmed a marked increase of serum specific IgE to cashew and pistachio. However, allergic reactions occurred only after ingestion of cashew. Conclusion: We report a case of cashew allergy confirmed by the typical clinical history and specific IgE test. (Korean J Asthma Allergy Clin Immunol 2011;31:215-218)

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