• Clean Technology
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• v.24 no.1
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• pp.35-40
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• 2018

$Co_3O_4$ catalysts for $N_2O$ decomposition were prepared by co-precipitation method. Ce and Zr were added during the preparation of the catalyst as promoter with the molar ratio (Ce or Zr) / Co = 0.05. Also, 1 wt% $K_2CO_3$ was doped to the prepared catalyst with impregnation method to investigate the effect of K on the catalyst performance. The prepared catalysts were characterized with SEM, BET, XRD, XPS and $H_2-TPR$. The $Co_3O_4$ catalyst exhibited a spinel crystal phase, and the addition of the promoter increased the specific surface area and reduced the particle and crystal size. It was confirmed that the doping of K improves the catalytic activity by increasing the concentration of $Co^{2+}$ in the catalyst which is an active site for catalytic reaction. The catalytic activity tests were carried out at a GHSV of $45,000h^{-1}$ and a temperature range of $250{\sim}375^{\circ}C$. The K-impregnated $Co_3O_4$ catalyst showed much higher activity than $Co_3O_4$ catalysts with promoter only. It is found that the K-impregnation increased the concentration of $Co^{2+}$ more than the added of promoter did, and lowered the reduction temperature to a great extent.

• Transactions of the Korean hydrogen and new energy society
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• v.26 no.5
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• pp.423-430
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• 2015

$Cu/ZnO/Al_2O_3$ catalysts for water gas shift (WGS) reaction were synthesized by co-precipitation method with the fixed molar ratio of Cu/Zn/Al precursors as 45/45/10. Copper and zinc precursor were added into sodium carbonate solution for precipitation and aged for 24h. During the aging period, aluminum precursor was added into the aging solution with different time gap from the precipitation starting point: 6h, 12h, and 18h. The resulting catalysts were characterized with SEM, XRD, BET surface measurement, $N_2O$ chemisorption, TPR, and $NH_3$-TPD analysis. The catalytic activity tests were carried out at a GHSV of $27,986h^{-1}$ and a temperature range of 200 to $400^{\circ}C$. The catalyst morphology and crystalline structures were not affected by aluminum precursor addition time. The Cu dispersion degree, surface area, and pore diameter depended on the aging time of Cu-Zn precipitate without the presence of $Al_2O_3$ precursor. Also, the interaction between the active substance and $Al_2O_3$ became more stronger as aging duration, with Al precursor presented in the solution, increased. Therefore, it was confirmed that aluminum precursor addition time affected the catalytic characteristics and their catalytic activities.

• Korean Journal of Construction Engineering and Management
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• v.15 no.3
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• pp.58-65
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• 2014

This study aims to understand the environmental impact reduction of green buildings that are certified by Green standard for energy and environmental design(G-SEED). To ensure this end, this study assessed and compared the environmental impacts(global warning, ozone layer depletion, acidification, and eutrophication) of a G-SEED-certified elementary school building(green building) and an uncertified elementary school building(traditional building) using the life cycle assessment methodology. This study considered the environmental impacts from the material manufacturing, material transportation, on-site construction, and operation during 40 years. The comparison of the environmental impact intensity of two buildings showed that the green building generated much more environmental impacts than the traditional building. For example, the global warming potential of the green building was approximately 12.5% higher than of the traditional building since the global warming potential of the green building was 3.751 $t-CO_2eq./m^2$ while that of the traditional building was 3.282 $t-CO_2eq./m^2$. It signifies that the G-SEED doesn't guarantee the reduction of the environmental impacts in terms of four impact categories. Therefore, the G-SEED should be complemented and improved to achieve the environmental impact reduction.

• Korean Chemical Engineering Research
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• v.48 no.2
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• pp.253-258
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• 2010

In the field of the $CO_2$ absorption process using aqueous ammonia, the effects of regeneration pressure and temperature on $CO_2$ absorption performances of the aqueous ammonia were investigated. The absorbents were prepared by dissolving ammonium carbonate solid in water to grant the resulted solution 0.5 $CO_2$ loading ($mol\;CO_2/mol\;NH_3$) and various ammonia concentration (14, 20, 26 and 32 wt%). As-prepared absorbents were regenerated at high pressure and temperature (over $120^{\circ}C$ and 6 bar) before the absorption test. The absorption test was carried out by injecting the simulated gas that contains 12 vol% of $CO_2$ into a bubbling reactor. The introduction of 26 wt% of the ammonia concentration for $CO_2$ absorption test resulted in the higher absorption capacities than other experimental conditions. In particular, when the absorbents with 26 wt% of the ammonia were regenerated at $150^{\circ}C$ and 14 bar, the highest absorption capacity, $45ml\;CO_2/g$, was obtained. According to the analysis of absorbents using acid-base titration, the ammonia loss during the regeneration of the absorbents with a fixed ammonia concentration decreased as the regeneration pressure increased, while it increased as the regeneration temperature increased. In the condition of fixed regeneration pressure and temperature, as expected, the ammonia loss increased as the ammonia concentration increased. The measured $CO_2$ loadings and ammonia concentrations of absorbents were compared to the values calculated by Electrolyte NRTL model in Aspen Plus.

• 대한공업교육학회지
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• v.40 no.2
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• pp.72-91
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• 2015

This study is aimed at researching and analyzing the actual conditions of the curriculum and career path of chemical engineering field in specialized high school, and seeking for a curriculum improvement plan for activation by means of identity establishment of chemical engineering field. This study surveyed the actual conditions of school (department) regarding chemical engineering, and analyzed an adequacy among the curriculum, department name and acquired license. The results are as follows. Firstly, In order to the chemical engineering field to maintain the identity of chemical engineering and accept the changes in the industrial site, it is desirable for the department name to use the name of applied science, such as Applied Chemical Industry, Nano Chemical Industry, Environmental Chemical Industry, Energy Chemical Industry, Convergence Materials Science and Chemical Engineering, Ceramic Chemical Engineering, Biomolecular and Chemical Engineering, and Food Bio-chemical Engineering, which are derived from chemical engineering, and the revision of curriculum should be included. Secondly, it is necessary to diversify relevant licenses by standard department of chemical engineering field, and clarify the purpose of human resources development and the image of talented, considering the future course of graduates and the demand of industry, for the purpose of improving school-leveled curriculum to raise the possibility of employment. Thirdly, in accordance with the changing paradigm that secondary vocational education is changed from 'just-to-know education (knowledge)' to 'can-do education (capability)', it is necessary to make the performance ability-centered curriculum in which 'chemical engineering industry - chemical engineering vocational education - chemical engineering qualification' are integrated.

• Journal of the Korean Geographical Society
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• v.38 no.2
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• pp.206-223
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• 2003

Bays and caps represent the physical characteristics of Naepo area in Korea. And reclamation of tidal land presents a clue toward the understanding of regional identities and landscape changes in this area. Reclamation of tidal land in the Garorim bay that is representative of the physical geographies of Naepo area had trended toward 'the diffusion of salt ponds' during Joseon dynasty. Hereafter the Japanese imperialism, the reclamation had tumed to 'the reclamation of arable lands' by drainage. But, at the same time the land use of salt pond that had been the most appropriate strategy of adaptation for the ecological environments of this area has showed a sort of the geographical long-term durability. And the great landlords that had emerged during Japanese imperialism were the Yeom-han(鹽漢, laborers who engaged in salt production) in former times. They as a new local elites have played a leading role in the reclamation of tidal land and the making of regional landscape.

• The Korean Nurse
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• v.23 no.3 s.126
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• pp.7-21
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• 1984

한국간호 I. 간호행정제도 및 법규의 변천 1. 간호행정기구 한국의 의료행정은 현대의학의 도입과 더불어 1894년 6월 내부에 위생국을 둔다는 규정이 발표됨으로서 시작되었고 1901년 관제개편에 따라 위생국에 보건과와 의무과가 설치되었다. 그 후 1945년 12월 보건후생부 간호사업국내에 보건간호과 기관간호과 조산 간호과가 설치되었고 각 도에는 간호 사업계가 설치되었다. 1948년부터는 보건사회부 의정국내의 조산간호과가 간호 사업과로 개편되었다. 그후 1970년 간호사업과가 간호사업담당관제로 개편되었으며 1981년부터는 간호사업담당관제도 폐지되어 보건국의 가족보건과나 의정국 지역의료과에서 한 명의 간호원이 참여하는 정도로 간호행정기구가 점차 축소되었다. 2. 간호법규 1)면허 1962년 개정된 의료법에 의하여 간호원의 면허는 문교부장관이 인가한 간호교육기관 졸업자중 간호원 국가시험 합격자로 규정하였다. 조산원의 경우는 1914년 처음으로 조산원 면허등록을 시작하였으며 현재는 간호원 면허를 받은 자로서 보건사회부장관이 지정하는 교육병원에서 1년의 정규 교육과정을 필한자로 그 자격을 명시하고 있다. 2) 자격시험 자격시험은 1916년부터 실시되었으며 1920년 이후는 각 도에서 관할 실시하였다. 그 후 1962년부터는 보건사회부장관의 주도하에 국가시험을 시행하였으며 현재는 국립 보건원에서 간호원을 포함한 의료업자의 국가 시험을 주관하고 있다. 3)간호수가 간호원 조산원에 관한 간호수가 관계 규칙은 1911년에 발표된 것으로 간호원의 경우 출장 시에 출장비와 간호료를 환자가 지불하도록 하는 것이었다. 1925년 5월까지는 각 지역별로 간호수가에 차이가 있었으나 동년 6월부터 수가규정이 전국적으로 통일되었다. 그 후 1953년부터는 국공립병원 간호원들에게도 다른 일반 공직자와 같이 직급을 보함으로서 간호직에 대한 보수가 통일되었으며 1971년부터는 간호직 수당이 제정되었다. II. 간호사업의 분야별 발전 1. 임상간호제도의 발전 1)초기의 임상간호 한국에 서양의학을 기초로 설립된 최초의 병원은 1885년 의사 Allen에 의한 왕립병원이다. 그 후 정부에 의하여 1894년 군부병원이 설립되었고, 1899년 내부병원이 1904년에 적십자 병원이 설립되었다. 당시에 이루어진 현대간호는 일본인 간호원들에 의해 전해진 일본식 간호와 선교사 간호원들에 의해 전해진 서구식 간호방식이 있었는데 이 두 간호방법은 문화적 배경이나 사회적 인습에 의한 많은 차이점을 볼 수 있었다. 2) 일제하의 임상간호 이 당시에 이루어진 일본식 간호방법을 보면 간호원들의 주업무가 환자를 위한 간호보다도 의사 보조에 더 치중한 것을 볼 수 있다. 한편 선교계 병원에서는 입원환자에 대해서는 간호원들이 전인간호를 실시하였으며 병원당국과 의사들의 협조로 많은 간호사업의 발전을 가져올수 있었다. 3) 광복 이후의 임상간호 6.25 동란 후 한국에는 병원이 계속 늘어나 현재 20Bed 이상의 전국의 병원수가 431개소이고 이중 80Bed 이상의 종합병원이 148개소나 된다. 각 병원의 간호사업은 간호사업과 또는 간호사업부의 행정체제로 운영되고 있으며 최근에는 간호과정(Nursing Process)의 개념을 도입하여 문제중심 간호기록인 POMR(Problem Oriented Medical Record) 방법을 시도하고 있다. 또한 면허간호원은 매년 중앙회에서 실시하는 보수교육을 10시간 이상 받고 있다.

• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.364-371
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• 2019

The World Health Organization (WHO) announced the 11th International Classification System (ICD-11), which classifies game addiction as a disease in 2018. Sin stocks are defined as the companies that have negative addictive properties and are taxed on social costs. If a game disorder is listed in the disease classification system in Korea, it is highly likely that Korean game companies may be considered as sin stocks that causes negative addictive properties and social costs such as the game addiction and the game addiction tax. This suggests that game companies could be newly included in the scope of sin stocks in Korea. In this study, we examine the effect of the inclusion of game companies in the scope of sin stocks on the job preferences of game companies. We found that there is a high level of opposition to the opinion of the listing sin stocks of game companies, and a high degree of addiction and gambling was suggested as the cause of the game companies being classified as sin stocks. We also found that firm value and job preference would be decrease if a game company was classified as sin stocks. The study is meaningful in that it suggests that game companies can be perceived negatively as sin stocks due to the disease code of game disorder, which has recently emerged as a social issue. Also, this study will contribute to the academia and market participants by reporting statistically the effect of the classification of sin stocks in game companies on job preferences for game companies.

• Cross-Cultural Studies
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• v.41
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• pp.57-84
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• 2015

During the Japanese rule, there was an abundance of Japanese writers using colonial Taiwan as the backdrop for their work. However, after Japan's surrender and Taiwan's independence, such writers became nearly invisible. With recent relations between Taiwan and Japan drawing closer, novels and films tracing the modern relationship of the two nations are continually being introduced. Tsushima Yuko's 2008 novel Too Savage and Yoshida Shuichi's 2009 work Road also sprout from the shift in the two countries' and East Asia's historic and political atmosphere. The two books are similar in the sense that they both use countries as the backdrop and recall colonial times. However, the perspectives of the two greatly differ. This paper will compare the meaning behind the narrative strategies that the two authors take in remembering colonial Taiwan and the relationship of the two countries. It will be quite meaningful for Koreans to research the recent works of Japanese writers depicting Taiwan, as Korea also shares a similar modern history. It will also be a good opportunity to ruminate on the entangled modern history of the East Asian region and review relevant literature and culture.

• (The) Research of the performance art and culture
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• no.32
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• pp.371-397
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• 2016

The function of the Duhak nongak(農樂) in Jecheon consist of Ceremony, Labor, and Entertainment. Before the commemorative rites for village god village people beat a small gong. This is a evidence of the drive away evil spirits in New Year's Eve of the lunar year. Before harden house site village peoples beat musical instrument noisily. In order to press hard the god of the earth they play musical instrument. Musical instrument not a simple musical instrument, but a purify and wish tool. When weeding a rice paddy Durae organized in Sangpung village. Durae are less effective than communal sharing of labor in weeding effect. Nonetheless, Nongak carried out core function in Durae. In order to participate Nonngak concours, peoples made a Pangut. From independence to 1970s people combine traditional nongak and Pangut. Since then village people played Pangut. From 1990s Pangut was played by Duhak Nonngak Preservation Association. Through the participation Nonngak concours, Duhak nongak was regrouped. Finally this nongak prepared Taeguk-jin, Snail-jin, Cross-jin, Sabang-jin, Sanggyeonrae Bans anggyeonrae-jin, Palbang-jin, Rope making and individual play. Duhak Nonngak promptly met the needs of the times. So, they could play Pangut. The feature of the Duhak Nonngak is that active cognition, highly skilled musician a patron and scouting a competent leader.