• 대한화장품학회지
• /
• 제44권4호
• /
• pp.437-445
• /
• 2018

본 연구는 새로운 항산화 및 미백 기능성 화장품 성분을 개발하기 위해 기존의 항산화와 미백 기능성 성분으로 알려진 두 가지 성분을 혼합한 새로운 조성을 개발하고, 이를 이용해 항산화 및 미백효과를 알아보고자 하였다. 두 가지 성분은 항산화와 멜라닌 생성억제 기능이 알려진 sulforaphane과 멜라닌 생성 억제 효과가 알려진 PF-3758309이다. 각 성분 및 혼합 조성에 대한 세포독성을 조사하여 세포독성이 나타나지 않는 농도를 결정하였다. 단독 처리 시 sulforaphane는 $10{\mu}M$까지, PF-3758309는 100 nM까지 세포독성이 없다는 것을 확인하였다. 두 화합물 $10{\mu}M$ sulforaphane과 1 nM PF-3758309를 병합 처리 시 세포독성은 없었다. LPS 자극에 의해 생성된 일산화질소는 sulforaphane과 PF-3758309의 병합 처리시 현저히 감소되었다. ${\alpha}$-MSH에 의한 멜라닌 생성 역시 병합 처리에 의해 억제되었다. 화장품 소재로 사용 가능성을 확인하기 위해 혼합 조성시료에 대한 인체적용시험을 실시하였다. 혼합조성 시료는 피부첩포에 의한 안전성 평가는 무자극으로 판정되었고, 피부밝기 증가효과와 피부 멜라닌 침착을 억제함을 확인하였다. 이러한 결과들로 혼합 조성물이 항산화와 미백 기능이 있는 새로운 기능성 화장품 조성으로 개발될 가능성을 확인할 수 있었다.

• 한국정보처리학회논문지
• /
• 제7권5호
• /
• pp.1388-1400
• /
• 2000

An important technical issue in recent software development is to make needed software by the composition of components that are assemblable, and configurable, and independently extracted. The main advantage of component-based software development is reducing development time and cost. It is more cost-effective in development time to use components that are already developed than developing from scratch. There are two ways of component-based software development: one is to compose self-developed components, and the other is to by the components developed by third-parties and compose them. In the second case, existing non component programs must can be used for reuse in the component development. In this paper, we approach two methods for increase of reusability of Java program. First, we suggest the technique of extracting the elements suitable for the Beans component model from Java program, and then we show a process and a guideline of converting the extract elements into the Beans component model. Second, we suggest a technique of automatically extracting component information from the Java Beans component, expressing them in XML, its is possible to reuse the efficient component environment.

• 융합보안논문지
• /
• 제7권3호
• /
• pp.25-30
• /
• 2007

보안제품에 대한 평가기준은 CC 버전 3의 등장과 더불어 단일 제품평가에서 합성형 제품의 평가로 그 평가 범위가 넓어지고 있다. 이에 합성형 제품을 평가하기 위한 기준에 연구와 그 도입방안에 대한 연구가 필요시 된다. 본 논문에서는 이러한 합성형 TOE을 위한 개발 가이드에 대해 연구함으로써 CC 버전 3의 평가 기준에 적합한 한국형 합성형 제품 평가 방안을 제시하고자 한다. 구체적인 방안으로 유럽의 ITSEM 컴포넌트 지침과 TOE를 분석함으로써 합성형 제품의 평가 가이드 방안을 제시한다.

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 1997년도 춘계학술발표회논문집(2)
• /
• pp.341-344
• /
• 1997

A vitrification process is under development in KEPRI for the treatment of low-and medium-level radioactive waste. Although the project is for developing and building Vitrification Pilot Plant in Korea, one of KEPRI's concerns is the quality control of the vitrified glass. This paper discusses a methodology for the estimation of glass composition by on-line measurement of molten glass properties, which could be applied to the plant for real-time quality control of the glass product. By remotely measuring viscosity and density of the molten glass, the glass characteristics such as composition can be estimated and eventually controlled. For this purpose, using the database of glass composition vs. physical properties in isothermal three-component system of SiO$_2$-Na$_2$O-B$_2$O$_3$, a software TERNARY has been developed which determines the glass composition by using two known physical properties(e.g. density and viscosity).

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2007년도 춘계학술발표대회
• /
• pp.249-252
• /
• 2007

Workflow composition and management is a crucial part of Component Based Development (CBD). Workflows can be composed reusing existing workflows to improve efficiency during the various stages of software development process. Reusability of software process activities is improved by using existing workflows. This paper proposes a Workflow Composition Engine that generates workflow which consists of existing process activities and describes design of The Workflow Composition Engine. A prototype of the Workflow Composition Engine implemented is described.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2015년도 추계 학술논문 발표대회
• /
• pp.9-10
• /
• 2015

Waste Concrete Powder will be generated during the manufacture of construction waste as recycled aggregate Waste concrete. The main component of the waste concrete Powder is a silica-based composition 51% SiO₂, waste concrete cement-based composition Al₂O₃ 10%, CaO 26% component are contained. The material is silica sand of PHC piles should experiment by replacing the Waste Concrete Powder. The compressive strength results are as follows. 25% when the Silica was replaced 32.5Mpa, when 50% have replaced 43.4Mpa, when 75% have replaced 45.3Mpa was measured. Compared with the non-replaced test sample it appears that the strength increases. Therefore, it is determined that the practical use of the PHC piles by replacing silica via this experiment is possible.

• 한국환경보건학회지
• /
• 제28권3호
• /
• pp.34-38
• /
• 2002

Statistical analysis between sewage plant operating parameters and the effluent quality was performed. We extracted two factors from principal component analysis of operating parameters and effluent quality from each plant. The total variance of 84.7%, 79.2% was explained by the two factors at SB plant and SC plant, respectively. The factors were identified at SB plant in the following order 1) the oxidation of organic material by aeration basin microbe,2) biomass in aeration basin and at SC plant 1) the oxidation of organic material by aeration basin microbe, 2) thickening of acti-vated sludge. These results suggested that the control of microbial composition might be critical on the improvement of the effluent quality and plant operating efficiency because most of the factors were related with microbes.

• 대한전기학회논문지:전력기술부문A
• /
• 제50권6호
• /
• pp.279-286
• /
• 2001

A load modeling, micro method, is performed by component load modeling, load composition rate estimation and aggregation of component load model, etc. The load model obtained from this process must be applied to actual load bus to verify it and to get reliable load model. But it is difficult to apply every load bus due to al lot of load buses and complex experiment. This paper proposed the field test method in load bus to verify the load modeling. For appropriate field test, representative load buses are selected by the proposed algorithm considering the composition rate of user category in all load buses. The field tests were performed at selected load buses to obtain load characteristics of bus by time and seasonal without blackout. The results of measurement and analysis are presented in detail.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1999년도 하계학술대회 논문집 C
• /
• pp.1478-1480
• /
• 1999

The accurate analysis of power system requires detailed load model. There are two basic approaches in modeling the load characteristics. One is to directly measure the voltage and frequency sensitivity of the load P and Q at substations and feeders. The other is to build up a composite load model from each load component. Each of these methods has advantages and disadvantages. This paper presents load composition for KEPCO's power system to develop load models by the component-based load modeling.

• 펄프종이기술
• /
• 제31권1호
• /
• pp.89-94
• /
• 1999

The inorganic compositions of traditional lye, and lyes prepared from the stalks of five different agricultural products: beans, wheat, barley, buckwheat and red peppers, were analyzed. Traditional lye was composed mainly of a weak alkaline salt, potassium carbonate as the major component and neutral salts, potassium chloride and potassium sulfate as minor components. The ash and lye contents of buckwheat have significantly higher then those of the rest agricultgural products. Bean and red pepper stalks lyes were composed mainly of potassium carbonate, similar to the composition of traditional lye, but also contained potassium chloride or sulfate. In contrast, postassium chloride was the major component of wheat and barley stalk lye.