• 한국식품영양과학회지
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• 제31권4호
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• pp.604-608
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• 2002

염소를 함유한 알콜류의 추출 및 분석은 일반적인 알콜류에 비해 비등점이 높아 휘발 또는 증류법을 적용하기 어렵고 특히 히드록시프로필치환전분 중 PCH의 추출은 전분입자와의 에멀션을 형성하므로 어려움이 있다. 따라서 용매를 가온, 가압하여 추출효율을 높이고, 전분의 물성적인 특성으로 인한 여과의 어려움을 해소할 수 있는 가속용매추출기 (ASE)를 사용하여 PCH 분석을 하였다. 온도 40~15$0^{\circ}C$의 변화에 따른 회수율을 측정한 결과 온도 상승에 따라 회수율이 증가하는 경향을 나타내어 12$0^{\circ}C$에서는 96.1%의 회수율을 나타내었다. 압력 변화에 따른 추출효율을 검토한 결과 1500 psi까지는 압력 상승에 따른 회수율의 증가가 뚜렷하여 93.6%였으나 이후에는 완만하게 증가하여 2500 psi에서는 96.1%로 나타났다. 추출용매(초산에틸, 메탄올, 아세톤, 디에틸에테르 및 핵산)에 따른 PCH의 회수율을 측정한 결과 아세톤, 디에틸에테르, 초산에틸은 94% 이상의 회수율을 나타내었고 메탄올 87.3%, 핵산 14.1%로 나타났다. RSD(%)는 초산에틸이 5.6%로 가장 우수하였다. ASE를 이용한 히드록시프로필치환 전분 중 PCH의 최적 추출조건은 온도, 12$0^{\circ}C$; 압력, 2500 psi; 추출용매, 초산에틸, static time, 50분; purge time, 300초; heating time, 5분; flush(%), 100 mL였으며, 이때 회수율은 96.1%이었다.

• 한국광학회지
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• 제23권6호
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• pp.264-268
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• 2012

본 논문에서는 파장분할 다중방식의 수동형 광 가입자망(WDM-PON: Wavelength Division Multiplexing - Passive Optical Network)에서 매우 구조가 간단하고 저비용으로 구현 가능한 방송신호 전송 방법을 제안한다. 이는 하나의 광대역 증폭된 자발 광원(Amplified Spontaneous Emission: ASE)과 편광 독립 반사형 반도체 광 증폭기(Polarization Independent-Reflective Semiconductor Optical Amplifier: PI-RSOA) 만으로 구현이 가능하기 때문이다. 채널당 1.25 Gb/s 속도에서 24개의 가입자 채널에 대해 30 Km 이상의 방송 신호 전송 시, 무오류(error-free) 성능을 갖는 것을 실험적으로 증명하였다.

• 한국정보통신학회논문지
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• 제4권5호
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• pp.1135-1142
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• 2000

본 연구에서는 <1.55um 대역의 편광비의존성을 가지는 반도체 광증폭기를 제작하기 위하여 InGaAsP/InP 이중이종접합 웨이퍼를 이용하여 정방매립형 반도체 광증폭기(SOA)를 제작하였다. 제작된 반도체 광증폭기의 특성을 측정한 결과 3㏈대역폭은 35nm이었으며, 3dB포화출력은 4dBm이었다. ISOmA의 CW구동에서 최대이득은 19.4dB이었다. 반도체 광증폭기의 ASE power를 ASE측정시스템을 이용하여 TE, TM모드에 대하여 측정한 결과 최대이득을 나타내는 영역부근에서 TE 및 TM모드의 분포가 거의 일치하였다. 따라서 본 연구에서 제작된 반도체 광증폭기는 비편광의존성 SOA임을 실험적으로 확인하였다.

• Asian Pacific Journal of Cancer Prevention
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• 제16권8호
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• pp.3429-3434
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• 2015

Background: This study analyzed predictors of regular mammography performance in Korea. In addition, we determined factors affecting regular mammography performance in life-transition aged women by applying an attitude, social influence, and self-efficacy (ASE) model. Materials and Methods: Data were collected from women aged over 40 years residing in province J in Korea. The 178 enrolled subjects provided informed voluntary consent prior to completing a structural questionnaire. Results: The overall regular mammography performance rate of the subjects was 41.6%. Older age, city residency, high income and part-time job were associated with a high regular mammography performance. Among women who had undergone more breast self-examinations (BSE) or more doctors' physical examinations (PE), there were higher regular mammography performance rates. All three ASE model factors were significantly associated with regular mammography performance. Women with a high level of positive ASE values had a significantly high regular mammography performance rate. Within the ASE model, self-efficacy and social influence were particularly important. Logistic regression analysis explained 34.7% of regular mammography performance and PE experience (${\beta}=4.645$, p=.003), part-time job (${\beta}=4.010$, p=.050), self-efficacy (${\beta}=1.820$, p=.026) and social influence (${\beta}=1.509$, p=.038) were significant factors. Conclusions: Promotional strategies that could improve self-efficacy, reinforce social influence and reduce geographical, time and financial barriers are needed to increase the regular mammography performance rate in life-transition aged.

• 생약학회지
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• 제46권1호
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• pp.65-71
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• 2015

Although it has recently been reported that Acanthopanax senticosus has a protective effect against the development of metabolic disorders such as diabetes and hyperlipidemia, its underlying molecular mechanisms have remained to be elucidated. In this study, we observed that treatment of an extract of A. senticosus (ASE) reduced body weight and adiposity and improved glucose tolerance in high-fat diet (HFD)-induced obese mice. HFD-induced weight gain in white adipose tissues and liver was also significantly reduced in ASE-treated HFD-fed mice, which was found to be contributed by suppression of mRNA expression of genes involved in fatty-acid uptake and fat synthesis in white adipose tissue. ASE treatment also attenuated M1 macrophage activation, increased regulatory T ($T_{reg}$) cell population, and modulated leptin/adiponectin profile that might alleviate chronic inflammation to protect against HFD-induced insulin resistance. Our findings suggest a therapeutic potential of ASE for prevention and treatment of type 2 diabetes without adverse effects such as weight gain and dyslipidemia.

• Food Science and Biotechnology
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• 제16권6호
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• pp.894-901
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• 2007

This study investigated the effects of cell cultured Acanthopanax senticosus extract (ASE) supplementation and swimming exercise on lipid profiles and carnitine concentrations in C57BL/6J mice fed high fat diets. Male C57BL/6J mice (n=50), aged 4 weeks, were divided into 5 groups based on exercise and/or ASE supplementation (0.5 g/kg of body weight): normal diet (N-C), high fat diet (H-C), high fat diet non-supplement & exercise (H-NSE), high fat diet supplement & no exercise (H-SNE), high fat diet supplement & exercis (H-SE). Liver nonesterified carnitine (NEC) was significantly higher in the H-SNE group than in the H-C group, and liver total carnitine (TCNE) levels were significantly higher in the H-SNE group than in the H-NSE and H-SE groups. Liver and muscle carnitine palmitoyltransferase-I (CPT-I) mRNA levels tended to be higher with ASE supplementation and/or exercise. These results suggest that supplementation with ASE and/or exercise might have a role in improving lipid oxidation.

• 전기전자학회논문지
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• 제16권4호
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• pp.316-321
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• 2012

본 논문은 셀룰러 시스템에서 에너지 효율적인 마이크로 기지국 배치 방안에 관한 것이다. 먼저 기지국 배치는 영역에 대한 고려가 필요하기 때문에 공간 스펙트럼 효율(ASE)을 제한조건으로 하여, 제한조건을 만족하면서 에너지 사용을 최소로 하는 최적화 문제를 제시한다. 최적화 문제의 계산 복잡도를 감소시키기 위하여 마이크로 기지국 배치에 따른 기지국 서비스 영역과 ASE간의 관계를 기반으로 하는 마이크로 기지국 배치 방안을 제안한다. 모의실험을 통하여 제한된 알고리즘이 일정 범위 안에서 최적해의 성능을 만족시킴을 보인다.

• 한국통신학회논문지
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• 제25권9B호
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• pp.1518-1526
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• 2000

본 논문은 기존 표준 단일모드 광섬유 링크를 통하여 초고속 광신호의 장거리 전송이 가능하도록 분산보상 광섬유를 이용한 최적 분산보상 기법에 기반을 둔 전송링크 설계 방법을 제안하였다. 제안한 방법에서는 광섬유의 비선형성에서 비롯되는 자기위상변조(Self-Phase Modulation: SPM)와 광증폭기에서 발생하는 증폭자연방출(Amplified Spontaneous Emission : ASE) 잡음에 대하여 증폭기간 거리와 중계기간 거리를 최적화함으로써 전송신호 속도에 따른 최대 전송거리를 제시하였다. 또한 주어진 증폭기간 거리와 중계기간 거리에 대하여 ASE 잡음과 SPM의 효과의 균형적 관계로부터 최적의 입력 신호전력의 범위가 있음을 제시하였다.

• 한국소음진동공학회논문집
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• 제26권2호
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• pp.195-202
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• 2016

In this study, a concept of active sound enrichment (ASE) control system was implemented and demonstrated for improving engine sound quality inside the cabin of a passenger car during acceleration. Unlike the active noise control cancels the noise for disturbance rejection, the ASE adds additional sound to the noise for tracking control. This approach requires a new algorithm to provide additional artificial sound to the original engine sound using active control strategy to achieve a target sound profile, which is predefined to satisfy required interior sound quality. The ASE algorithm was implemented in a digital controller dSPACE DS1401 and real-time control experiment was accomplished in an actual car. The ASE control results show that the actively enriched sound of each engine order against RPM tracks the target profiles precisely and quickly and improves the discontinuity, the level ratios and the sound pressure level of each engine order. Thus it is anticipated the ASE system can be applied for the improvement of the engine sound quality inside the cabin during acceleration.

• 지역사회간호학회지
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• 제22권1호
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• pp.1-10
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• 2011

Purpose:The present study was to apply the Attitudes-Social influence-Efficacy (ASE) model in order to identify factors associated with the assertive behavior of non-smoking college students when they are exposed to secondhand smokes in Korea. Methods: Data were collected from non-smoking college students (N=1,656, 76.6% female) at two universities in Seoul and Gyeonggi-do. The main outcome measure was the assertive behavior. ASE factors such as attitudes toward being assertive, social influences, and self-efficacy as well as socio-demographic, health-related, and smoking-related factors were self-administrated. Results: The mean of the assertive behavior (range 1~5 points) was 2.23;37.6% was not at all assertive, while 4.3% was always assertive. Higher assertiveness was significantly correlated with a higher level of positive attitude, social influence and self-efficacy (p<.05 for all). Stepwise multiple regression analyses showed that the social influence was the strongest factor associated with the assertive behavior (${\beta}=0.430$, p<.001, $R^2$=.246), followed by self-efficacy, motive to assertiveness, having any family member who had diseases, and male gender. These factors explained the assertive behavior by 39.7%. Conclusion: The ASE model may explain the assertive behavior of non-smoking college students under secondhand smoke exposure. Social influence and self-efficacy were significant factors associated with their assertive behavior.