• The Korean Journal of Zoology
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• v.30 no.1
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• pp.71-78
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• 1987

한국산 기름종개의 학명사용에 정확을 기하기 위하여 우리나라 낙동강의 15개수역에서 채집된 1,472마리의 기름종개 표본과 유럽산 기름종개 표본을 비교검토하였다. 종전에 국내에서 C.taenia로 간주하였던 낙동강산 표본은 체측과 배면 반문의 수와 모양, 입수염의 길이, 및 안하극말단의 위치등의 유럽산 C.taenia와는 달리 중국산 C. sinensis와 더 유사하였다. 따라서 우리나라 낙동강산 기름종개 표본은 Cobitis sinensis et Dabry, 1874의 학명을 사용하는 것이 타당하다고 판단된다.

• Venture DIGEST
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• s.63
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• pp.16-17
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• 2004

가수 강산에가 나눔과 순환의 재활용운동을 실천하고있는 <아름다운가게>와 함께 지난 11월 9일“음악이 있는 아름다운가게”를 열었다. ‘음악이 있는 아름다운가게’는 음악인들이 이동판매차량‘움직이는 아름다운가게’의 일일 명예점장이 되어 작은 콘서트와 함께 재활용물품 등을 판매하고 개인소장품도 즉석에서 경매하는 행사이다. 그 첫 번째 일일 명예점장으로 활동한 가수 강산에를 만나 나눔과 희망의 노랫소리를 들어본다.

• The Korea Swine Journal
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• v.12 no.9 s.133
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• pp.38-39
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• 1990

정부는 도시사람들에세 썩은 수도물을 먹이지 않으려면 도시에 투자하는 예산을 농촌으로 돌려 환경오염방지를 위한 가축분뇨처리 시설에 적극적이고 과감한 지원을 해야한다. 그래야 도시와 농촌은 쾌적한 환경에서 살 수 있으며, 우리 강산은 산 좋고 물맑은 금수강산이 될 것이다

• Journal of the Korean Chemical Society
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• v.56 no.5
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• pp.628-637
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• 2012

In this research, the textbook contents related to the ionization degree of strong acid in water were analyzed from 1945 year syllabus to chemistry II textbook in 2009 revised curriculum. Fifty chemistry teachers' cognition related to the species of strong acid in water, and the relationship between the degree of ionization was surveyed by a questionnaire and interviews. As results, most of the teachers thought the species of strong acid in water based on the degree of ionization represented on the chemistry II textbooks. They didn't recognize the conflict of the degree of ionization and definition of strong acid on the textbooks, and then they awakened the conflict, they could not solve the problem.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.8 no.5
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• pp.534-544
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• 1997

The permittivity distribution of a two-dimensional high-contrast object with large size, which leads to the global minimum of cost function, is reconstructed by iteratively using the hybrid algorithm of Levenberg-magquardt algorithm(LMA) plus Genetic Algorithm(GA). The scattered fields calculated in a cost function are expanded in angular spectral modes, of which only effective propagating modes are used. The definition of cost function based on the effective propagating modes enables us to formulate the minimum number of incident waves for the reconstruction of object. It is numerically shown that LMA has an advantage of fast convergence but can't reconstruct a high-contrast object with large size and GA can reconstruct a high-contrast object with large size but has an disadvantage of slow convergence, whereas an inverse scattering technique using the hybrid algorithm adopts only advantages of LMA and GA.

• Journal of the Korean Chemical Society
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• v.57 no.2
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• pp.279-288
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• 2013

In this study, we analyzed the values of ionization and ionization constants in the chemistry textbooks developed during 1945-2009 year. The chemistry teachers compared strength of strong acids in aqueous solution by questionnaire. In the questionnaire, we searched chemistry teachers' cognitions about the discordance reason of ionization constant formulation and the values in the textbooks. The subjects were 46 chemistry teachers. As results, the teachers compared the strength of strong acids in aqueous solution based on the ionization and ionization constant values in the textbooks. They didn't notice the problem of discordance of ionization constant formulation and the values in the textbooks. Even though they recognized the problem, they could not find the solution, and thought the problem arrived by experiment error or measurement error.

• Applied Chemistry for Engineering
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• v.3 no.1
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• pp.7-17
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• 1992

The acid stronger than $H_0=-11.93$, which corresponds to the acid strength of 100% $H_2SO_4$, is known as superacid. However, solid superacid catalysts have many advantages such as an easy separation of products from catalyst, the repeated uses and regeneration of catalysts, as compared with liquid superacids. In this paper, the kinds of solid superacids, the preparation methods, and their applications for chemical reactions are introduced.

• Clean Technology
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• v.17 no.2
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• pp.156-165
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• 2011

The process for bioethanol production from lignocellulosic biomass was studied through process simulation using PRO/II. Process integration was conducted with concentrated acid pretreatment, hydrolysis process, SMB (simulated moving bed chromatography) process and pervaporation process. Energy consumption could be minimized by the heat recovery process. In addition, material and energy balance were calculated based on the results from the simulation and literature data. A net production yield of 4.07 kg-biomass and energy consumption value of 3,572 kcal per 1 kg ethanol were calculated, which is indicating that 26% yield increase and 30% energy saving compared to the bioethanol production process with dilute-acid hydrolysis (SRI report). In order to make it possible, sugar conversion yield of cellulose and hemi-cellulose is to be reached up to 90% and fermentation of xylose needs to be developed. In order to reduce the energy consumption up to 30%, the concentration of acid solution after being separated by 5MB should exceed 20%. If acid/sugar separation by SMB process is to be practical, the bioethanol process designed in this study can be commercially feasible.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.528-530
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• 2010

본 논문에서는 음악의 분석, 특히 대중가요의 가사 분석에 있어서 사회학적 관점인 기호학을 기초로 분석을 하였으며, 특히 '강산에'의 노래가사를 중심으로 분석을 하였다. 2집은 1994년에 발매 되었는데, 당시의 사회적 분위기와 맞물린 '비판적'가사의 흐름이외에도 '정서적', '의식적'인 구조에 대해서도 분석하였다.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.868-870
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• 2011

본 논문에서는 음악의 정신과도 같은 노랫말의 분석, 특히 '강산에 3집'에서의 노래가사가 갖고 있는 저항의식을 중심으로 분석을 하였다. 3집은 1996년에 발매 되었는데, 당시의 사회적 분위기와 맞물린 '비판적'가사의 흐름을 중심으로 분석하였다.