• 한국식품영양과학회지
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• 제38권11호
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• pp.1516-1521
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• 2009

본 연구는 미나리(Oenanthe javanica, MNR), 율무(Coicis lachryma-jobi L. var., YM) 및 차전자(Plantaginis asiatica L, CJJ) 물 추출물이 지질 대사 관련 효소들인 lipoprotein lipase(LPL), acyl-CoA synthetase(ACS) 그리고 carnitine acetyltransferase(CAT) 활성에 유익한 영향력을 미치는지 알아보았다. LPL와 ACS는 비만 모델군 Zucker fatty 흰쥐(fa/fa)와 대조군인 Zucker lean 흰쥐(lean)의 부고환 지질과 간에서 각각 분리하였다. MNR이나 YM 물 추출물 처리는 일반(lean) 및 비만(fa/fa) 흰쥐로부터 분리한 LPL 활성을 현저하게 감소시켰다. MNR, YM 그리고 CJJ 물 추출물 10000 ppm을 처리했을 때 fa/fa LPL 활성이 각각 32.5%, 30.1% 그리고 22.8% 증가하였다. Lean ACS 활성이 대조군과 비교하여 YM 물 추출물에서 현저히 증가하였고 MNR 물 추출물 처리는 대조군과 비교하여 fa/fa ACS 활성을 현저하게 증가시켰다(p<0.05). 10000 ppm MNR 물 추출물은 대조군과 비교하여 fa/fa ACS 활성을 12배까지 증가시켰다. CAT 활성이 대조군보다 10000 ppm과 2000 ppm CJJ 물 추출물 군에서 현저히 높았다. 따라서 MNR, YM 그리고 CJJ 물 추출물은 비만한 사람에게 지질 대사와 관련된 효소 활성에 기인하여 유익한 효과가 있을 것으로 추정된다.

• 상하수도학회지
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• 제21권3호
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• pp.349-357
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• 2007

Reports of endocrine disrupting compounds (EDCs), pharmaceutically active compounds (PhACs), and personal care products (PCPs) have raised substantial concern in important potable drinking water quality issues. Our study investigates the removal of EDCs, PhACs, and PCPs of 10 compounds having different physico-chemical properties (e.g., molecular weight, and octanol-water partition coefficient ($K_{OW}$)) by nanofiltration (NF) membranes. The rejection of micropollutants by NF membranes ranged from 93.9% to 99.9% depending on solute characteristics. A batch adsorption experiments indicated that adsorption is an important mechanism for transport/removal of relatively hydrophobic compounds, and is related to the octanol-water partition coefficient values. The transport phenomenon associated with adsorption may also depend on solution water chemistry such as pH and ionic strength influencing the pKa value of compounds. In addition, it was visually seen that the retention was somewhat higher for the larger compounds based on their molecular weight. These results suggest that the NF membrane retains many organic compounds due to both hydrophobic adsorption and size exclusion mechanisms.

• 한국재료학회지
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• 제26권9호
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• pp.460-467
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• 2016

Activated carbons (ACs) have been used as EDLC (electric double-layer capacitor) electrode materials due to their high specific area, stability, and ecological advantages. In order to prepare ACs with high density and crystallinity, coal tar pitch (CTP) was activated by $K_2CO_3$ and the textural and electrochemical properties of the obtained ACs were investigated. Although the CTP ACs formed by $K_2CO_3$ activation had much smaller specific surface area and pore volume than did the CTP ACs formed by KOH activation, their volumetric specific capacitance (F/cc) levels as electrode materials for EDLC were comparable due to their higher density and micro-crystallinity. Structural characterization and EDLC-electrode performance were studied with different activation conditions of $CTP/K_2CO_3$ ratio, activation temperature, and activation period.

• 한국통신학회논문지
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• 제29권1A호
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• pp.1-8
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• 2004

비터비 검출기는 통신용 모뎀 및 고밀도 기록장치 관련 분야에서 많이 쓰이는데, 그 구성회로 중 add-compare-selection(ACS) 연산부는 연산 속도 및 전력 소모량 측면에서 가장 결정적인 역할을 하기 때문에 오랜 연구의 대상이었다. ACS는 기본적으로 덧셈기, 비교기, 그리고 표준화기로 구성되어 있는데, 본 논문에서는 기존의 비교기에 비하여 고속 동작이 가능하고 전력 소모량 면에서도 우수한 비교기를 제안하고, ACS에 효과적으로 적용하여, 기존의 비터비 디코더에서 사용하던 ACS에 비하여 약 $20\%$의 속도 향상이 가능함을 시뮬레이션을 통하여 증명하였다.

• 한국항공우주학회지
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• 제34권1호
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• pp.103-109
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• 2006

본 논문에서 VDS(동역학 시뮬레이터)와 ACS(자세제어 시뮬레이터)를 개발하고 VDS를 ACS와 연동한 PILS를 통해 검증하였다. VDS는 정지궤도위성의 자세제어계 하드웨어 특성을 고려한 모델링 및 모듈화로 구성하였다. ACS는 센서 데이터로부터 자세결정을 수행한 후 구동기에 적절한 명령을 생성하는 역할을 한다. 또한, VDS와 PCDU(전력제어분배장치) 하드웨어와의 데이터 송수신을 위해 데이터획득보드를 장착하였다. VDS와 PCDU와의 HILS 연동시험을 통해서도 VDS의 성능검증을 수행하였다.

• Psychiatry investigation
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• 제15권11호
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• pp.1094-1097
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• 2018

Objective Patients with acute coronary syndrome (ACS) are at an increased risk of suicide. It is well known that epigenetic mechanisms may explain the pathophysiology of suicidal behavior including suicidal ideation (SI), but no study has explored these mechanisms in ACS populations. Methods In total, 969 patients were initially recruited within 2 weeks of the acute coronary event and, 711 patients were successfully followed up 1 year after ACS. SI was evaluated using the relevant items on the Montgomery-${\AA}sberg$ Depression Rating Scale and covariates potentially affecting SI were estimated. Results Brain-derived neurotrophic factor (BDNF) hypermethylation was associated with SI in both the acute and chronic phases of ACS, although the association was not statistically significant in the acute phase after applying Bonferroni's correction. Conclusion These results suggested that BDNF hypermethylation may have played a role in an epigenetic predisposition for SI in ACS patients, particularly during the chronic phase.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국내학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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• pp.959-964
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• 1993

We developed fault diagnosis fuzzy expert system for ACS(Advanced Control System). ACS is a DCS(Distributed Control System) with advanced control algorithm fault tolerance capabilities, fault diagnosis functions, and so on. Fuzzy expert system developed for an ACS in this paper gives an operator alarm signal depending on the state of process value and manipulated value, and the cause of alarm in real time. Simple experiment result with several rules for the-fault-diagnosis of drum level loop in Seoul-Power-Plant.

• 한국정밀공학회지
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• 제31권4호
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• pp.303-309
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• 2014

This paper contains how to integrate production resources of 4M1E (Man, Machine, Material, Method and Energy), analyze and collect various type of management information which emphasize the need of a common platform's 4M1E Middleware and Autonomous Configuration. Management efficiency improved by the functionality of integrated management information and digitizing information with standardized data.

• 한국대기환경학회지
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• 제29권6호
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• pp.773-779
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• 2013

This study was performed to provide the basic data for the function of BTEX removal for compact electrostatic precipitator which are applicable to indoor environment (or closed spaces). For this purpose, the adsorption equilibrium test was conducted for BTEX of activated carbon sheet (ACS) and activated carbon (AC), and the adsorption characteristics of AC and ACS were evaluated using the Langmuir constant which was obtained from the adsorption characteristics, adsorption capacity and regression calculation. The surface area and adsorption pore volume of ACS reduced by 70% and 86%, respectively, as compared to those of AC, and the adsorption capacities of BTEX also showed a similar level. Thus, it is considered that ACS applied electrostatic precipitator is able to remove dust and BTEX simultaneously.

• Journal of Construction Engineering and Project Management
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• 제7권2호
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• pp.1-10
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• 2017

The Clonal Selection Algorithm (CSA) is an algorithm inspired by the human immune system mechanism. In CSA, several parameters needs to be optimized by large amount of sensitivity analysis for the optimal results. They limit the accuracy of the results due to the uncertainty and subjectivity. Adaptive Clonal Selection (ACS), a modified version of CSA, is developed as an algorithm without controls by pre-defined parameters in terms of selection process and mutation strength. In this paper, we discuss the ACS in detail and present its implementation in construction site utilization planning (CSUP). When applied to a developed model published in research literature, it proves that the ACS are capable of searching the optimal layout of temporary facilities on construction site based on the result of objective function, especially when the parameterization process is considered. Although the ACS still needs some improvements, obtaining a promising result when working on a same case study computed by Genetic Algorithm and Electimze algorithm prove its potential in solving more complex construction optimization problems in the future.