• ALGAE
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• 제23권2호
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• pp.151-162
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• 2008

Marine algal flora and community structure were seasonally examined at three sites in the vicinity of the Wolseong nuclear power plant in Korea from February to November 2006. A total of 126 seaweeds including 25 green, 31 brown, 70 red algae, and 1 marine plant were identified. The greatest number of species occurred at Jeonchonri (101 species) followed by intake (88 species) and discharge (29 species) during the study period. Of 126 seaweeds, 76 annuals and 13 warm tolerance species were recorded. Dominant species based on important value (IV > 10) were Ulva pertusa and Enteromorpha linza at intake, U. pertusa and Padina arborescens at discharge, and Sargassum horneri and Corallina pilulifera at Jeonchonri shore. Annual average biomass exhibited a wide range of variations, from 40.67g m-2 in dry weight at discharge to 133.69g m-2 at Jeonchonri. Among six functional groups, dominant group was coarsely-branched form at intake and Jeonchonri, but it was different at discharge site as filamentous form. Seaweed community structures of discharge site were distinguishable in decreasing species richness, biomass, species diversity index (H’), richness index (R), and evenness index (J’). Also, the ratios of green algae, warm tolerance species, annual algae, filamentous form and dominance index (DI) remarkably increased. Such phenomenons of discharge site are usually found under environmentally stressful conditions such as high disturbance. Thus, I can conclude that the heated effluents of nuclear power plant act as environmental stress influencing seaweed community structures and it can be detected with various community indices.

• 한국수산과학회지
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• 제49권1호
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• pp.38-44
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• 2016

The quality and quantity of live food sources strongly influence the success of fish production in farming operations. Thus, critical studies of live forage species are a crucial element for progress in fish aquaculture. The fat content of food is an especially important determinant of growth in marine fish. Omega-3 highly unsaturated fatty acids (HUFA) are essential components of diet that determine the nutritional value of larval fish. Euglena is a protist that has potential as a forage species. These single-celled organisms have plant and animal characteristics they are motile, elliptical in shape and 15–500 μm in diameter. Their nutritional content is excellent, but most studies have focused on cells raised in autotrophic culture. We therefore examined differences in the lipid and fatty acid contents, and the growth of Euglena cells grown under autotrophic, heterotrophic, and mixotrophic conditions. Biomass production reached 15.03 g/L, 12.28 g/L, and 3.66 g/L under mixotrophy, heterotrophy, and autotrophy, respectively. The proportional n-3 HUFA content differed among culture methods: 10.04%, 5.80% and 10.01% in mixotrophic, heterotrophic and autotrophic cultures, respectively. Mixotrophy was to be the best form of cultivation for improving the growth and nutritional content of Euglena.

• 한국의류산업학회지
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• 제17권6호
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• pp.978-987
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• 2015

This study investigates the awareness levels of Korean textile companies and develops appropriate response plans for the Korea-US Free Trade Agreement. The study also explores practical and realistic directions that the Korean textile industry must initiate. A qualitative study was conducted on 10 individuals for a more in-depth and demonstrative understanding that provide a better awareness on the responses of the textile industry towards the Korea-US FTA. The results of this study are as follows. First, the effect of the Korea-US FTA on the textile industry was insignificant. Second, industry members determined that fabric sectors and specialized fabrics (such as industrial materials and finished clothing products) could realize benefits through the Korea-US FTA. Third, industry members emphasize that the current focus is on FTAs by countries that have solidified their positions as manufacturing and sewing bases for the US and Europe (such as Southeast Asia) and not the Korea-US FTA. Based on results acquired through this study, the response measures to enter the U.S. market are as follows. First, the industry must develop high-performance and high value-adding direct export products suited to the needs of the US market in order to realize the benefits of the Korea-US FTA. Second, the industry and government must cooperate to actively host and participate in overseas trade shows that can actively open sales channels within the US. Third, the self-sustainability of textile companies must be cultivated through continuous and focused government training.

• 대한기계학회논문집A
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• 제23권11호
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• pp.2014-2021
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• 1999

The present investigation is concerned with the degradation characteristics of cast stainless steel(CF8M), exposed to the $\sigma$-phase degradation at $700^{\circ}C$. In the present paper, the degradation of CF8 M at $700^{\circ}C$ is evaluated by a non-destructive test, DL-EPR(double loop electrochemical potentiokinetic reactivation). The surface of specimens is observed by using scanning electron microscopy after DL-EPR test. Also. chromium contents of matrix, grain boundary and ferrite phase are analyzed by electron probe X-ray micro analyzer. Through the experiments, the following results are obtained 1) The degree of sensitization(DOS) of CF8M aged up to 15hr at $700^{\circ}C$ is increased with acing time while that is decreased with aging time from 15hr to 150hr. 2) The impact energy decreases with increase of $\sigma$-phase while DOS increases with $\sigma$-phase until aging time reaches to 15hr. After the aging time. 15hr, the $\sigma$-phase and the rate of impact energy with respect to aging time decreases. Therefore the degradation behavior of the CF8M can be evaluated by comparing SEM micrographs and the value of DOS.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.228-230
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• 2002

The relative electron density resolution was discussed by the noise power spectrum (NPS) in the heavy ion CT image. The heavy ion beam $\^$12/C accelerated up to 400MeV/u by RIMAC was used in this study. The two-dimensional (2-D) NPS in the CT image was obtained from the one-dimensional (1-D) NPS of the measured residual range distribution of water phantom for single projection, and the noise variance in the CT image was calculated from 2-D NPS. The technique used in the reconstruction was the filtered back-projection method with Shepp-Logan filter. The calculated value suggests the result of our previous works using the density resolution phantom, assuming that the relative electron density resolution is twice the standard deviation. Therefore, the estimation of the noise in CT images by 2-D NPS obtained the measured residual range distribution is the useful method.

• Archives of Plastic Surgery
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• 제40권2호
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• pp.134-140
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• 2013

Background The purpose of this study is to analyze the current attitudes toward professionalism, the core values, and the type of professionalism among plastic surgeons in Korea to establish a code of ethics regarding the role of professionalism for plastic and reconstructive surgeons. Methods From March 9, to July 1, 2012, face-to-face and mail surveys were conducted targeting the 325 participants (256 specialists and 69 residents) who are registered members of the Korean Society of Plastic and Reconstructive Surgeons. The proportion of each response given to an item was obtained through statistical processing through frequency analysis. The Mann-Whitney U test was used to compare the differences in the responses between the resident group and the specialist group. Results The survey results on the perception of professionalism in plastic surgery showed that a high proportion (90.5%) of the respondents viewed the future of plastic surgeons as bright. Through evaluation of the importance of the value items,"professional dominance" (4.58 pts), "autonomy" (4.45 pts), "lifestyle" (4.34 pts), and "commercialism" (4.31 pts) were assessed as critical values. "Altruism" (3.84 pts), "interpersonal competence" (3.79 pts), and "social justice" (3.61 pts) were viewed as lesser values. This difference showed the characteristics of an entrepreneurial outlook. Conclusions Plastic surgeons should pursue excellence, humanism, accountability, and altruism in order to overcome the crisis of professionalism in plastic surgery. In order to develop the necessary competencies of professionals, vocational education should be arranged by the Korean Society of Plastic Surgeons, and an appropriate code of ethics should be established.

• 생태와환경
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• 제40권4호
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• pp.527-536
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• 2007

In this study, we applied 10-metric health assessment model, based on the Index of Biological Integrity (IBI) during 2006 in the Changwon Stream, which is located in the Changwon city, Gyeongnam province, S. Korea, and then compared with water quality data. The Index of Biological Integrity (IBI) in the Changwon Stream varied from 18 to 38 in the watershed depending on the sampling location and averaged 30.3 (n=6) during the study. Analysis of tolerance guilds showed that the proportion of sensitive species was 13%, but tolerant and intermediate species were 34% and 53%, respectively. Qualitative Habitat Evaluation Index (QHEI) averaged 43.3 (range: 65-104, n=6) indicating non-supporting condition, based on the criteria of U.S. EPA (1993). Values of QHEI showed a typical longitudinal decreases from the headwater reach to the downstream location, except for Site 1 with a low QHEI value by artificial habitat by concrete construction. Minimum QHEI was found in Site 4 where fish diversity was minimal. Conductivity increased continuously along the gradients and especially showed abrupt increases in the downstream sites along with turbidity. Stream ecosystem health of IBI matched to the values of QHEI except for S6. Low IBI values in the sites 4 and 5 was considered to be a result of combined effects of chemical pollutions and habitat degradations. Our results support the hypotheses of Plafkin et ai. (1989) that physical habitat quality directly influences the trophic structure and species richness, and is closely associated with IBI values.

• 한국식품조리과학회지
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• 제15권3호
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• pp.244-248
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• 1999

본 논문에서 돈혈을 사용한 순대와 돈혈을 혈장과 난백으로 대체한 순대의 성분 분석을 실시한 결과는 다음과 같다. (1) 돈혈을 15% 첨가한 순대의 일반성분은 수분 66.1%, 단백질 9.2%, 지방 10.4%, 회분 0.9%, 섬유소 0.5%, 탄수화물 12.7%였으며 Atwater계수로 환산한 총 칼로리는 181.92kcal/100g였다. 그러나 순대에 혈장을 대체함에 따라 163.78kcal/g으로 총 칼로리의 감소 효과를 나타냈으며 난백 첨가에 따라 총 칼로리가 230.77kcal/g으로 증가하였다. (2) 무기질은 돈혈 첨가 순대에서 Fe 함량이 8.50 mg%으로 우수한 철분 함유 식품이었으며 돈혈장, 난백 대체 비율 증가에 따라 Fe, Na, K의 함량이 감소하는 경향을 보였다. 그러나 Ca, P, Mg 함량은 시료군에 따라 유의적인 차이가 없었다. (3) 순대에서의 아미노산은 glutamic acid, leucine, lysine, glycine, alanine의 함량이 많았고 methionine, cysteine의 함량이 적었다. (4) 지방산은 palmitic acid, stearic acid, oleic acid. linoleic acid가 전체 지방산의 89.5∼93.5%를 차지하였다. 순대에서 돈혈장과 난백의 대체는 불포화/포화지방 산비와 다가불포화/포화지방산 비를 증가시키는 바람직한 영향을 주었다. 콜레스테롤 함량은 control인 혈액순대가 66.6 mg이었으나 혈장과 난백을 대체함으로써 각각 25.7%, 36.9%의 콜레스테롤 함량 저하 효과를 보였다.

• 재활복지공학회논문지
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• 제9권4호
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• pp.319-329
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• 2015

본 논문에서는 다자유도 동적 하네스 시스템 개발을 위해 일상동작에서와 트레드밀 보행 시 하네스 체중 지지에 따른 하지 동작 패턴에 관한 연구를 수행하였다. 건강한 성인 남성 5명을 대상으로 일상생활 동작과 하네스 체중지지에 따른 좌, 우 대퇴직근, 외측광근, 전경골근, 외측 비복근과 족압을 측정하였다. 실험 결과, 일상생활 동작 수행 시 EMG는 각 구분 동작들에 따른 특이적인 근육 활성을 나타내었다. 슬관절의 굴곡과 신전을 요하는 앉기, 서기, 계단 오르기, 계단 내리기 동작에서의 외측광근의 활성이 두드러졌다. 족압 분포의 경우 일상생활 동작 중 중력방향으로 내려오는 계단 내려오기 동작에서 가장 큰 족압 분포 값을 보였다. 수동형 하네스 체중 지지율이 증가에 따라 근육 활성도와 족압 분포 값은 감소하는 경향을 보였다. 이러한 결과를 토대로 체중지지를 통한 보행 훈련이 체중지지율 변화에 따라 다양한 환자 군에 적용 시킬 수 있을 것이다 판단된다.

• 한국의류학회지
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• 제34권12호
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• pp.1980-1991
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• 2010

This study proposes the O P E N Triad framework as a future set of tools and perspectives for individual members and institutes to further their professional and academic potential as well as prospect and vitalize the future of the Korean Clothing and Textiles discipline through a global perspective. The millennial generation desires On-demand, Personal, Engaging, and Networked (O P E N) experiences effecting cultural change for creative and influential interaction in transactions, communication, and education. O P E N Individuals offers a WebSphere model as a holistic learning system that has a synergizing value of education across academic courses, industries, and cultures. Through a digitalized and virtualized class, it complements relevant technologies already familiar to the student population. By employing environmental scanning approaches, the most influential and viable future global issues related to the clothing and textiles discipline are identified and dialogued within O P E N Institutes. For future clothing and textiles institutes, this scanning allows them to be open to new ideas, to focus on inter-engagements, to collaborate among individuals, to associate as a part of web of people, organizations, and ideas, to personalize an institutes curricula, and to dialogue generative knowledge. O P E N Industries reveals three dominant future issues that cross academia and industry, sustainability, supply chain management, and social networking. In-depth interviews with U.S. industry experts identified interdependent gaps in global consumer experience practices and suggested the following gaps as future research areas: a standardized business model to the entrepreneurial model, strategic management to a sustainable competitive advantage, standardized to differentiated products, services and operations, market segmentation to global consumer clusters, business-driven marketplaces to consumer-engaged marketspaces, and excellent services to optimal experience. This O P E N Triad framework empowers millennial students, universities, and industries to anticipate and prepare for a radically changing world.