• Nuclear industry
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• v.37 no.8
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• pp.12-15
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• 2017

<중앙일보>는 8월 28일자 신문을 통해 '탈원전'에 대한 이슈 토론 결과를 보도했다. 중앙일보가 국가 개혁 프로젝트 '리셋 코리아'의 하나로 연재하는 '2017 이슈 배틀' 시리즈 중 여섯 번째 코너이다. 기사 내용을 전재한다.

• Journal of Digital Convergence
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• v.18 no.6
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• pp.33-44
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• 2020

The main objective of this study is to measure the concentration and deconcentration of the domestic freight forwarding system which illustrate the development trends in this industry. In this study, Herfindal-Hirschman index (HHI), shift-share analysis (SSA), and GINI coefficient combined with Lorenz curves were employed to investigate the domestic freight forwarders. The results are as follows: first, the HHI was used to assess the concentration of domestic freight forwarders in Vietnam. The downward trend from 0.117 in 2008 to 0.083 in 2018 indicate the deconcentration of domestic freight forwarders in Vietnam. Second, the SSA results indicated that the company Transimex showed the best performance with a shift effect of million VND 1,906,515 and a ABSGR value of million VND 2,158,232. Third, the GINI index go down from 0.468 to 0.393 in 2008-2018 as follow and the Lorenz curves covered a large part which make more demonstrate the deconcentration trend of freight forwarding in Vietnam. The results show that deconcentration is a trend in 2008-2018. The results of this study provides relevant data on freight forwarders which are not easily accessible to related stakeholders.

• Journal of the Korean Geographical Society
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• v.39 no.3
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• pp.391-408
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• 2004

Modernism is understood as a process of differentiation. Postmodernism or postmodernity, by contrast, involves de-differentiation. There is a breakdown in the distinctiveness of each of spheres of social activities. It is important to explain an examination of the relationships between the de-differentiation and a wide variety of contemporary tourism, expecially postmodern tourism. Also, de-differentiation between the tourism and the social spheres lead to the spatial reflection. Aim of this paper is to examine the processes of de-differentiation between the tourism and the social spheres, which comes out spatially in Jeju island. Especially, location of destinations is concentrated on the coastline in the period of modem tourism. On the contrary, the postmodern tourism shows that the location of destinations are wide spread diffusion its vertically and horizontally. It means that there are to appear a breakdown of distinctiveness between the conventional tourism destinations and the regional person's space.

• Korean Journal of Food Science and Technology
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• v.31 no.2
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• pp.558-563
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• 1999

Response surface methodology was used for monitoring physicochemical properties of chitosan with preparation of chitosan. Deacetylation degree of chitosan was in proportion to NaOH concentration for deacetylation of chitosan. The solubility of chitosan was maximized in 52% (concentration of NaOH), $109^{\circ}C$ (deacetylation temperature) and 123 min (deacetylation time). Viscosity of chitosan was mainly influenced by concentration of NaOH, and was greatly decreased with the increase of concentration of NaOH. The optimum condition ranges for preparation of chitosan was $52{\sim}54%$ NaOH, $100{\sim}115^{\circ}C$ in deacetylation temperature and $100{\sim}140\;min$ in deacetylation time.

• Journal of Life Science
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• v.21 no.4
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• pp.534-541
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• 2011

Retinoic acid (RA), a metabolite of vitamin A, is known to regulate dedifferentiation of rabbit articular chondrocytes. The regulatory mechanism of dedifferentiation by RA is not yet understood. Thus, the effect of RA on the regulation of nitric oxide (NO)-induced dedifferentiation was investigated in rabbit articular chondrocytes. RA caused loss of the differentiated chondrocyte phenotype as demonstrated by inhibition of type II collagen expression and proteoglycan synthesis. RA also accelerated NO-induced dedifferentiation in rabbit articular chondrocytes as detected by expression of type II collagen and Sox-9 using Western blot analysis and production of sulfated proteoglycan using Alcain blue staining. Further, RA potentiated NO-induced activation of ERK. Inhibition of ERK with PD98059 (PD) recovered the expression of type II collagen and Sox-9 and production of sulfate proteoglycan in NO-induced dedifferentiated chondrocytes by RA treatment. Our findings suggest that RA accelerates NO-induced dedifferentiation of rabbit articular chondrocytes via the ERK pathway.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.2
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• pp.1032-1037
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• 2011

In this study, simulation and optimization works for a demethanizer column have been performed to obtain ethane and heavier products from a pretreated natural gas stream. Pretreated natural gas feed stream was partially condensed after being precooled by exchanging heat with demethanizer top vapor stream and by using an external refrigeration cycle with a propane refrigerant. Vapor stream was cooled further and partially condensed through a turbo-expander. The power generated from the expansion of turbo-expander was delivered to the compressor for the residue gas compression. Liquid stream was cooled by Joule-Thomson expansion valve and was fed to the middle section of the demethanizer. Recovery percent of ethane for feed natural was set to 80% and methane to ethane molar ratio was fixed as 0.0119. On the other hand, some of the cold heat could be recovered by splitting the feed stream and by exchanging heat with side reboiler in order to reduce the heat duty in the propane refrigeration cycle.

• (The) Research of the performance art and culture
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• no.19
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• pp.61-86
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• 2009

Jainpalkwangdae(慈仁八廣大) of Kyungsan area in Kyungbuk province was restored through over 50 years gap. This play basically has the structure of conflict - reconcillation, which is differentiated from a masque and a tightrope walking. The characters of this play are a nobleman, Malttuki (a servant), a legal wife and a second wife. Their personality is deviant from a existing Korean masque. This weird and artificial appearance may be a problem in the process of restoration. Otherwise, it might be a very different transmission type of masque. Therefore, we need to investigate why Jainpalkwangdae is different from a traditional masque.

• Journal of the Korean Institute of Gas
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• v.9 no.4 s.29
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• pp.17-25
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• 2005

The dealuminated and alkali/alkaline-earth metal exchanged Y-zeolites were prepared as a catalyst. Elemental compositions and structures of the prepared catalysts were analyzed by the various spectroscopic techniques such as inductively coupled plasma-atomic emission spectroscopy(ICP-AES), X-ray fluorescence(XRF) and X-ray diffraction(XRD), and the desorption behaviors of adsorbed species on the catalyst surfaces were investigated via NO-TPD experiment. Comparing with the composition of the starting material of NaY zeolite, the magnitudes of Si/Al ratio in catalytic materials were increased after dealumination. The Si/Al ratio of catalytic materials after dealumination followed by Cs and Ba cation exchange were additionally decreased. Dealumination to catalysts induced a destruction of basic frame due to a detachment of aluminum, which results in reducing framework structure, while increasing non-framework structure. This phenomenon becomes more serious with increasing time of steam treatment and even more significant for the cation exchanged catalysts. In NO-TPD experiments, the desorption peaks of NO which indicates an activity point of catalysts shifted to the low temperature region after dealumination and cation exchange. The desorption peaks of the NO-TPD profiles taken after steam treatment also shifted to the low temperature region as the steam treatment time increased. In dealuminated and cation exchanged Y-zeolites, the catalytic activities were more influenced by exchanged cation and the formation of non-framework structure.

• Aerospace Industry
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• v.85
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• pp.44-45
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• 2004

약 20여년 전 국내에서도 큰 인기를 끌었던 ''''A특공대''''라는 외국 TV드라마를 기억하는지? 그 프로그램의 주인공 중 한 사람인 BA(미스터 T 분)는 전혀 비행기를 탈 수 없는 비행공포증 환자여서 비행기를 탈 일이 있으면 동료들이 수면제를 먹인 후에 타야 했다. 하지만 비행공포증에 시달리는 사람들은 드라마 속 뿐 아니라 우리 주위에도 많이 있다. 어떻게 해야 극복할 수 있을까?

• 건강소식
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• v.35 no.7
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• pp.22-23
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• 2011

날씨가 더운 여름이면 남녀노소 누구나 땀으로 흘린 원기를 보충하기 위해 보양 음식, 찬 음식을 찾게 된다. 그러나 보양 음식은 기름진 육식이 대부분이라 장에 무리를 줄 수 있고 찬 음식은 장에 탈이 날 수 있는데 닭고기는 찬 성질을 가지고 있지만, 장과 위를 보호해 차게 먹어도 탈이 나지 않는 음식이다.