• Journal of the Korean Society of Marine Environment & Safety
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• v.2 no.S1
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• pp.39-50
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• 1996

국제간 정보통신전달 수단으로 인공위성과 해저케이블이 상호보안적으로 사용되어 왔다. 특히 최근에 와서는 해저 광케이블의 등장으로 국가간 정보통신전달 수단으로 케이블의 역할이 급격히 증대되고 있다. 해저케이블은 열악한 해양환경에 노출되어 있으므로 건설시나 운용중에 손상 받을 가능성이 아주 크며 그로 인한 파급효과가 엄청나다. 또한 해저케이블 사고시 복구에 많은 시간과 어려움이 뒤따르며 비용도 막대하다. 따라서 해저케이블의 안전성을 확보하는 것은 매우 중요하며 이에 대한 보호대책이 절실하다. 본 논문에서는 해저케이블의 건설 및 운용상에 발생할 수 있는 여러 불안전 요인들을 찾아 그에 대한 대책방안을 고찰해 보고자 한다.

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2004.10a
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• pp.83-83
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• 2004

• 전기의세계
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• v.26 no.2
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• pp.10-13
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• 1977

컴퓨터가 다양한 목적에 이용됨에 따라 신뢰도가 높은 즉 고장허용의 전산체계의 필요성은 증가되고 있다. 임상응용의 경우 컴퓨터의 오동작은 치명적일 수 있고 또 공정제어의 경우 귀중한 자원의 막대한 손실을 초래할 수 있다. 따라서 고장허용의 전산체계에 관한 연구는 필연적이다. 역사적으로 최초의 고장허용의 전산체계는 SAGE와 같은 군사적인 응용에 시도하였다. 2절에서는 이러한 신뢰도가 높은 기계의 시험적인 결과와 실제 운영의 경험에 입각한 고장허용의 전산체계의 설계원리를 논한다. 이어서 3절에서는 현재까지 설계된 고장허용 전산체계의 구조를 기술하며 4절에서는 현재까지 범용의 컴퓨터에 사용한 고장허용기법을 소개한다.

• Korean Journal of Adult Nursing
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• v.13 no.3
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• pp.420-430
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• 2001

This study was designed to verify the effect of aromatherapy on menstrual cramps and dysmenorrhea by a quasi experiment (nonequivalent control group pretest-posttest design), from March to October, 2000. The subjects of this experiment consisted of 45 college women with menstrual cramps and dysmenorrhea. They were randomized by 25 for the experimental group and 20 for the control group. Their mean age was 20.6 years, mean menstrual period 28.7 days, mean menstrual cramps(VAS) 7.25, mean dysmenorrhea (Dysmenorrhea Scale) was 27.34. As treatment, aromatherapy was to give effleurrage of the abdomen with lavender, clary sage and rose as aroma oil, almond oil as carrier oil. For the control group, abdominal massage was given with only almond oil. Data collection included menstrual cramps, dysmenorrhea, the change of symptoms(low abdominal pain, lumbago, headache, nausea, fatigue, edema). Menstrual cramps, dysmenorrhea and general, menstrual characteristics of subjects were measured the first day of the pre menstrual period before treatment (pre-test), menstrual cramps, dysmenorrhea, the change of symptoms were measured the first and second day of post menstrual period after treatment (posttest). Data were analyzed by t-test, $\chi^2$- test, repeated measures ANOVA, Cronbach's ${\alpha}$ with SAS Program. The results of this study was as follows; 1. Menstrual cramps was significantly lower in the experimental group(p = .001). 2. Dysmenorrhea was significantly lower in the experimental group(p = .027). 3. Less women in the experimental group complained about the six symptoms than women in the control group after treatment on the first day of the menstrual period(p < 0.05, p < 0.01) In conclusion, these findings indicate that aromatherapy with lavender, clary sage, and rose could be effective to decrease menstrual cramps, and dysmenorrhea. So, aromatherapy could be applied to women suffering with menstrual cramps, dysmenorrhea periodically as an nursing intervention.

• Journal of the Korean Ceramic Society
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• v.48 no.6
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• pp.621-624
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• 2011

In order to deposit a homogeneous and uniform ${\beta}$-SiC films by chemical vapor deposition, we constructed the phase-diagram of ${\beta}$-SiC over graphite and silicon via computational thermodynamic calculation considering pressure(P), temperature(T) and gas composition(C) as variables in $C_3H_8-SiCl_4-H_2$ system. During the calculation, the ratio of Cl/Si and C/Si is maintained to be 4 and 1, respectively, and H/Si ratio is varied from 2.67 to 15,000. The P-T-C diagram showed very steep phase boundary between SiC+C and SiC region perpendicular to H/Si axis and also showed SiC+Si region with very large H/Si value of ~6700. The diagram can be applied not only to the prediction of the deposited phase composition but to compositional variation due to the temperature distribution in the reactor. The P-T-C diagram could provide the better understanding of chemical vapor deposition of silicon carbide.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.33 no.3
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• pp.238-242
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• 2000

The antioxidants and packaging methods affecting on lipid oxidation of the plain dried large anchovy were investigated. Antioxidants resulted in decrease of lipid oxidation of dried large anchovy. The addition of BHT remarkably repressed lipid oxidation during storage of the dried large anchovy at $37^{\circ}C$, followed by ${\alpha}-tocopherol$, rosemary extract and sage extract. The addition of rosemary extract mixed with 0.1{\%} {\alpha}-tocopherol$ showed similar effect to BHT during storaBe at $25^{\circ}C\;in\;0.1{\%}$ rosemary extract mixed with $0.1{\%}\;{\alpha}-tocopherol$. When the dried anchovy were packed in polyethylene film after treatment with antioxidants, the vacuum package increased the antioxidative effect in repression of lipid oxidation during storage of dried large anchovy.

• Biomolecules & Therapeutics
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• v.16 no.4
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• pp.431-436
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• 2008

To identify genes whose expression correlated with biological features of therapy-related AML (t-AML), we analyzed the expression profiles of de novo AML t(9;11) and t-AML t(9;11) bone marrow samples using previously published SAGE data. Three-hundred twenty-nine transcripts that satisfied statistical (P<0.05) and magnitude-of-change ($\geq$ 4-fold) criteria were identified as differentially expressed between de novo AML t(9;11) and t-AML t(9;11) cells. Of these transcripts, 301 (91%) matched known genes or ESTs and were classified according to functional categories (http://david.abcc.ncifcrf.gov/). The majority of differentially expressed genes in t-AML t(9;11) were involved in the regulation of biological and metabolic processes. Especially prominent among these were genes related to immune and drug responses. These results establish a framework for developing new drugs for the treatment of t-AML.

• Transactions of the Korean hydrogen and new energy society
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• v.27 no.6
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• pp.651-659
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• 2016

Korea Institute of Machinery & Materials (KIMM) has developed a high efficient Stirling cryocooler with moving magnet linear compressor for precooling hydrogen liquefier and cooling high temperature superconductor (HTS) devices, such as superconductor cable and superconductor fault current limiters. Hydrogen liquefier and HTS electric devices require cryocooler with cooling capacity of hundred watts to kilowatts at 77 K. The compressor in the Stirling cryocooler uses opposed moving magnet linear motors to drive opposed pistons. High efficient Stirling cryocooler is designed by SAGE-software, manufactured and tested systematically. A cooling capacity of 1 kW at 77 K with an electric input power of 9.6 kW has been analyzed. But prototype test results of the Stirling cryocooler have the cooling capacity of 0.65 kW at 76.8 K with an electric input power of 8.1 kW. And then, 21.5% Carnot COP (Coefficient of performance) of the prototype Stirling cryocooler is achieved. The comparison analysis between SAGE-model and experimental results has shown the direction for further design optimization of the Stirling cryocooler.

• Resources Recycling
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• v.26 no.5
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• pp.85-96
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• 2017

In this study, we tried to select a slag system capable of pyro-metallurgical process through analysis of sludge generated from PCB plating and etching process solution. Based on this, the possibility of extracting valuable metals in the sludge was studied by experimental and thermodynamic approaches. The sludge was dried at $100{\sim}500^{\circ}C$ and the morphology, chemical composition and phase of the sludge were analyzed. The possibility of pyro-metallurgical process of sludge was investigated through thermodynamic approach using FactSage software.

• Journal of Korean Philosophical Society
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• v.141
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• pp.203-224
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• 2017

In Laozi Tao(道) is not only the universal law of all existence but the eternal law of morality. In Laozi Tao as the eternal law of morality is the absolute criteria of value-judgement. In this respect in Laozi Tao is the perfect value or the absolute criteria of value-judgement. And so someone can evaluate Laozi's perspective on the theory of value is value-absolutism. Nonetheless, Laozi allows all theories of value in Laozi. Laozi's thought on the value is indifferent to what kind of value one has. But Laozi's ideal of the theory of value is value-universalism through Tao as the absolute criteria of value-judgement. So in Laozi the perspective on value is the universalization of value-absolutism. In Laozi, the medium of value-universalism is being of Sage(聖人) and all human's inpersonation of Teh(德). If this two conditions fulfilled, all human beings can reach the state of "subtle identification(玄同)" and can be sages, and value-universalism take the form of valuelessism.