• Title/Summary/Keyword: ASE

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Analysis of Propylen Chlorohydrin in Hydroxypropyl Distarch Phosphate by Accelerated Solvent Extractor (ASE) (가속화용매추출기를 이용한 히드록시프로필인산이전분의 프로필렌클로로히드린 분석방법에 관한 연구)

  • Lee, Myung-Ja;Sin, Yeong-Min;Jeong, Eui-Han;Choi, Tae-Jin;Chung, Sook-Hyun;An, Won-Gun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.31 no.4
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    • pp.604-608
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    • 2002
  • Accelerated solvent extraction (ASE) was used for a rapid and simple extraction of propylenchlorohydrin (PCH) residue in hydroxylpropyl modified starch. The effects of temperature, pressure and extraction solvent on the extraction efficiency were investigated to find the optimal condition of ASE. The optimal conditions for PCH extraction in hydroxylpropyl modified starch were static time of 50 min, purge time of 300 sec, heating time of 5min, temperature of 12$0^{\circ}C$, pressure of 2500 psi, flush (%) with 100 volumes, and ethylacetate as an extraction solvent. The recovery (96.1%) of this method was higher than that (76.4%) of Code of Food Additive. Therefore, the ASE was a good method in both aspects of efficiency and effectiveness.

Broadcast Signal Transmission on a WDM-PON System Using a Polarization Independent RSOA and a Broadband ASE Light Source (광대역 ASE 광원과 PI-RSOA를 이용한 WDM-PON 시스템에서의 방송 신호 전송)

  • Oh, Yeong Guk;Lee, Hyuek Jae
    • Korean Journal of Optics and Photonics
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    • v.23 no.6
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    • pp.264-268
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    • 2012
  • In this paper, we propose a new method for broadcasting in a WDM-PON system which has the merits of a simple and cost effective structure. It can be constructed using only an ASE (Amplified Spontaneous Emission) light source and a PI-RSOA (Polarization Independent - Reflective Semiconductor Optical Amplifier). Error-free broadcast signal transmission over 30 Km for 24 channels at 1.25 Gb/s has been successfully demonstrated.

A study on the fabrication of the polarization-insensitive semiconductor optical amplifier (저 편광의존성을 가지는 반도체 광증폭기의 제작에 관한 연구)

  • 황상구;김정호;김운섭;김동욱;박윤호;홍창의
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.4 no.5
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    • pp.1135-1142
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    • 2000
  • In this study, we fabricated a 1.55um polarization-insensitive semiconductor optical amplifier(SOA) with rectangular buried heterostructure using a InGaAsP/InP double heterostructure wafer. Measured characteristics of the fabricated SOA are that 3dR bandwidth is 35nm and 3dB saturation output power is 4dBm. Maximum gain under the 150mA CW driving condition is 19.4dB. We measured the ASE(amplified spontanouse emission) Power spectrum or n and TM mode in the fabricated SOA using ASE measurement system and knew that distributions of the TE and TM mode about the maxinum region are nearly coincident. this shows the fabricated SOA is a polarization-insensitive.

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Effects of Attitude, Social Influence, and Self-Efficacy Model Factors on Regular Mammography Performance in Life-Transition Aged Women in Korea

  • Lee, Chang Hyun;Kim, Young Im
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.8
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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.

Suppression of Fat Accumulation and Improvement of Glucose Tolerance in High-fat Diet-induced Obese Mice Treated with an Acanthopanax senticosus Extract (고지방식이 유도 비만 마우스에서 가시오가피(Acanthopanax senticosus)의 지방축적 억제 및 인슐린 저항성 개선 작용)

  • Kim, Bobae;Hyun, Chang-Kee
    • Korean Journal of Pharmacognosy
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    • v.46 no.1
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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.

Effects of Cell Cultured Acanthopanax senticosus Extract Supplementation and Swimming Exercise on Lipid and Carnitine Profiles in C57BL/6J Mice Fed a High Fat Diet

  • Park, Jeong-Eun;Soh, Ju-Ryoun;Rho, Jeong-Ok;Cha, Youn-Soo
    • Food Science and Biotechnology
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    • v.16 no.6
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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.

An Energy-Efficient Deployment Strategy for Micro Base Station in Wireless Cellular Systems (무선 셀룰라 시스템에서 에너지 효율적인 마이크로 기지국 배치 방안)

  • Oh, Eunsung
    • Journal of IKEEE
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    • v.16 no.4
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    • pp.316-321
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    • 2012
  • In this paper, we study the energy-efficient deployment strategy for micro base station (BS) in wireless cellular systems. Firstly, we formulate a general problem pertaining to total energy consumption minimization with the requirement of area spectral efficiency (ASE). We start from an observation about the correlation between the area covered by an additional micro BS and the increment of ASE. Under such an observation, we propose an efficient greedy micro BS deployment algorithm. Simulations show that the proposed deployment algorithm can deploy micro BSs with a slight performance reduction comparing with the optimal solution.

Optimum Design of High Speed Transmission SMF Link Using DCF (분산보상 광섬유를 이용한 초고속 단일모드 광섬유 전송링크의 최적 설계 연구)

  • 김용범
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.25 no.9B
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    • pp.1518-1526
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    • 2000
  • This paper proposes an optical transmission link design method based on an optimum compensation scheme using dispersion compensating fiber (DCF), so that high-speed long-distance optical transmission would be possible over the conventional standard single mode fiber (SMF) link. The proposed design method provides the maximized transmission distances according to the signal speeds, where the amplifier spacing and repeater spacing are optimized wit respect to self-phase modulation(SPM) due to fiber nonlinearity and amplified spontaneous emission (ASE) noises caused by optical amplifies. It is also shown that there exists an optimum input signal power range balancing the effects of ASE noise and SPM for the given amplifier spacing and repeater spacing.

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Implementation of Active Sound Enrichment Control for Improving Engine Sound Quality Inside the Cabin of a Passenger Car (차량 실내공간의 가속 시 엔진음 음질 향상을 위한 실시간 능동음향증강 제어 구현)

  • Lee, Young-Sup;Kim, Jeakwan;Ryu, Seokhoon;Kim, Seonghyeon;Park, Dong Chul
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.26 no.2
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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.

Application of the ASE Model to the Assertive Behavior of Non-smoking College Students Under Secondhand Smoke Exposure (비흡연 대학생의 간접흡연 노출 시 주장행위 관련요인 - ASE 모델 적용을 중심으로 -)

  • Choo, Jin-A;Kim, Eun-Kyung
    • Research in Community and Public Health Nursing
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    • v.22 no.1
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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.