• Title/Summary/Keyword: 블루

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Anti-oxidant Activities of Vinegar Beverage Containing Sasa quelpaertensis Nakai Extract (제주조릿대 추출액을 활용한 식초 음료의 항산화 활성 연구)

  • Han, Joung-Hwan;Kim, Seong-Cheon;Oh, Han-Sol;Lee, Young-Joo;Park, So-Jeong;Ko, Ha-Na;Lee, Nam-Ho
    • Proceedings of the KAIS Fall Conference
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    • 2010.11b
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    • pp.733-736
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    • 2010
  • 제주조릿대 잎 열수 추출 진액을 첨가한 식초음료를 개발하기 위해 항산화 활성을 관찰하였다. 항산화활성은 DPPH radical 소거활성, Hydroxyl radical 소거 활성 실험을 진행하였다. Base 식초를 선택하기 위한 쌀 식초와 사과식초의 DPPH 라디칼 소거활성에서는 식초 원액에 비해 제주조릿대를 첨가하였을 때 쌀 식초는 최대 68.07%증가하는 것을 확인 할 수 있었고, 사과식초의 경우 78.74% 증가하는 것을 확인할 수 있었다. 맛, 향, 단가, 항산화활성을 통하여 사과식초를 Base식초로 선택하였으며, Base식초와 제주조릿대 진액의 혼합비를 결정하기 위하여 배합율에 따른 항산화활성 연구에서는, DPPH 라디칼 소거활성의 경우 제주조릿대의 비율이 높아짐에 따라 DPPH 라디칼 소거능 역시 증가하는 것을 확인 할 수 있었다. Hydroxyl 라디칼 소거활성의 경우, 제주조릿대 진액의 비율을 증가시킬 수록 활성이 조금씩 떨어졌으나, 대조군인 석류와 블루베리 식초에 비해서는 10%이상 높은 소거활성이 있는 것을 확인할 수 있었다.

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Photodegradation Efficiencies of $TiO_{2}$ Coated Beads by Photoelectrocatalytic System(PECS) (광전자 촉매시스템(PECS)을 이용한 $TiO_{2}$ 코팅 비드의 광분해 효율)

  • Park, Seong-Ae;Ha, Jin-Wook;Do, Young-Woong;Yu, Dong-Sik;Lee, Ji-Ho
    • Proceedings of the KAIS Fall Conference
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    • 2007.05a
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    • pp.261-263
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    • 2007
  • 본 연구는 광전자 촉매시스템을 이용해 $TiO_{2}$ 졸이 코팅된 구형 비드의 광분해 효율에 대해 고찰한 것이다. $TiO_{2}$ 졸이 코팅된 구형 비드인 알루미늄비드, 유리비드, 실리카비드 화이트젤 ($1{\cdot}2{\cdot}3$형) 다섯 가지 비드를 사용하였고 실험은 산화환원지시 약인 메틸렌블루 수용액이 광촉매의 산화환원반웅을 통해 색상 및 홉광도 변화를 통해 환원 청도를 고찰할 목적으로 실행되었다. 소재별 실험 결과, 실험에 사용한 소재 중 실리카비드 화이트첼($1{\cdot}2{\cdot}3$형)만이 반응성을 나타냈다. 이들 $1{\cdot}2{\cdot}3$형은 $TiO_{2}$의 함량을 달리한 비드들이며 1형이 가장 적은 함량을 가지며 3형이 가장 많은 함량을 가지고 있다. 실험 결과 3형이 반응성이 가장 좋은 것을 알 수 있으며, 이 실험에서는 코팅물의 함량과 고정물의 상태가 광촉매 반응에 영향을 주는 것을 알 수 있다.

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Implementation to human-computer interface system with motion tracking using OpenCV and FPGA (FPGA와 OpenCV를 이용한 눈동자 모션인식을 통한 의사소통 시스템)

  • Lee, Hee Bin;Heo, Seung Won;Lee, Seung Jun;Yu, Yun Seop
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.05a
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    • pp.696-699
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    • 2018
  • This paper introduces a system that enables pupillary tracing and communication with patients with amyotrophic lateral sclerosis (ALS) who can not move free. Face and pupil are tracked using OpenCV, and eye movements are detected using DE1-SoC board. We use the webcam, track the pupil, identify the pupil's movement according to the pupil coordinate value, and select the character according to the user's intention. We propose a system that can use relatively low development cost and FPGA can be reusable, and can select a text easily to mobile phone by using Bluetooth.

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A Study on the On-Board Interface for Smartphones (스마트폰을 위한 OBD2 인터페이스 제공 방안)

  • Hong, Sung-Hwa
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.05a
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    • pp.410-411
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    • 2018
  • In this paper, In this paper, Smart OBD2 terminal collects OBD2 Data on the vehicle. And it passes through this with SmartPhone Bluetooth. OBD2 system is the system to use a variety of Service using it in SmartPhone. Utilizing NFC to help ordinary people, it can easily use to configure the Bluetooth Pairing. By using the Bluetooth 4.0, it is maximized compatibility of Bluetooth. Furthermore OBD2 terminal is a system to minimize the standby power of the terminal to prevent the discharge of the vehicle up issues. Anyone can develop an OBD2 connection App by providing the interfaces to make DB to develop and understand ODB2 data.

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Implementation to human-computer interface system with motion tracking using OpenCV (OpenCV를 이용한 눈동자 모션인식을 통한 의사소통 시스템 구현)

  • Heo, Seung Won;Lee, Seung Jun;Lee, Hee Bin;Yu, Yun Seop
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.05a
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    • pp.700-702
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    • 2018
  • In this abstract, introduces a system that enables communication by tracking the pupils of Lou Gehrig's disease patients who are unable to move their bodies. Face and eye pupil tracking perform using OpenCV, and eye movement recognition and character selection by eye movement is obtained using Python. In this paper, you will use the webcams, track your eyes, determine eye movements based on the coordinates of your pupils, and print characters that meet your preferences. It can easily output text messages using Bluetooth.

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MAC Scheduling Algorithm for Supporting Efficient Scatternet Operations of Bluetooth (블루투스의 효율적 스캐터넷 동작을 지원하기 위한 MAC 스케줄링 기법)

  • 주양익;김용석;이태진;차균현
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.7A
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    • pp.467-476
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    • 2003
  • In this paper, we propose an efficient MAC scheduling algorithm for supporting Bluetooth scatternet operations. Our proposed algorithm improves overall performances of scatter mode[2, 3] and considers QoS requirements of each link of the bridge node of a scatternet. Scatter mode is based on time division scheduling and provides every links of a scatternet with fair service opportunities. However, since each Bluetooth devices has various traffic characteristics. fair allocation of service opportunities is not efficient and may cause extravagance of wireless resources. Therefore, we propose a new efficient inter-piconet scheduling algorithm compliant with the current Bluetooth specification[1], and demonstrate its improved performances via computer simulations.

The Relationship between Gender Wage Gap and Occupational Segregation (여성 근로자 분포와 직무에 따른 직종별 남녀 임금격차 분석)

  • Kang, Jooyeon;Kim, Giseung
    • Journal of Labour Economics
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    • v.37 no.4
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    • pp.113-141
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    • 2014
  • This paper examines the occupational gender wage gap in the Korea labor market. This paper classifies occupations into three(the blue-collar profession, white-collar profession and female-dominated profession) according to job characteristics and female worker's ratio. To analyze occupational gender wage gap, this paper uses Mincer's wage equation(1974) and Oaxaca model(1973). The results are listed below. First, the gender wage gap is growing in all occupations. Second, the cause of increasing gender wage gap varies in different occupations.

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A Proposal of Collaborating Bluetooth Basestation in Hot Spot Area with Its Performance Analysis (핫스팟지역에서 협동방식 블루투스기지국의 제안과 성능분석)

  • Kim, Dong-Won;Cho, Dong-Uk;Lyu, Won
    • Proceedings of the Korea Information Processing Society Conference
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    • 2003.05b
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    • pp.1369-1372
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    • 2003
  • 가까운 장래에 싼 가격의 블루투스가 여러 가지 이동, 휴대 장치에 내장되어 다양한 응용서비스를 제공할 것이다. 본 논문에서는 공항이나 쇼핑몰 등 사람들이 많이 몰리는 공공장소와 같은 핫스팟(hot spot) 지역에서 블루투스 기지국을 통한 음성서비스 제공을 위하여 다수의 기지국을 유서 LAN으로 협동시켜 각각 기지국별로 따로 제공되던 음성 채널들을 집합화(aggregation) 함으로써 보다 많은 음성 서비스 채널들을 동시에 수용할 수 있는 방법을 제시하고 성능을 분석하였다. 단독으로 동작하는 기지국은 ACL채널을 사용하는 경우 7개까지의 채널 수용이 가능하므로 이상적인 경우에서도 오버랩 영역의 기지국의 개수가 n이면 7n 만큼 채널의 증가가 가능한 반면 협동으로 동작하면 블록킹 율도 개선되면서 집합화된 채널들을 보간(interpolation) 기법을 통한 통계적 사용으로 음성 패킷의 허용 손실 범위 내에서 음성채널의 수를 약 14n 정도까지 확장할 수 있다. 또한 음성전송과 데이터 전송이 혼합 서비스 될 때 수용하는 음성 채널의 수에 따른 데이터 전송지연시간 특성을 분석하였다.

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Relationship between Concentration of Alcian Blue and Mechanical Properties on High Current Density Copper Electroplating (고전류밀도 구리도금공정에서 알시안블루(Alcian Blue) 농도와 기계적 특성과의 상관관계)

  • Woo, Tae-Gyu
    • Korean Journal of Materials Research
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    • v.30 no.4
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    • pp.160-168
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    • 2020
  • The current density in copper electroplating is directly related with the productivity; then, to increase the productivity, an increase in current density is required. This study is based on an analysis of changes in surface characteristics and mechanical properties by applying the addition of Alcian Blue (AB, C56H68Cl4CuN16S4). The amount of Alcian Blue in the electrolytes is changed from 0 to 100 ppm. When Alcian Blue is added at 20 ppm, a seed layer is formed homogeneously on the surface at the initial stage of nucleation. However, crystals electroplated in electrolytes with more than 40 ppm of Alcian Blue are observed to have growth in the vertical direction on the surface and the shapes are like pyramids. This tendency of initial nucleation formation causes protrusions when the thickness of copper foil is 12 ㎛. Thereafter, a lot of extrusions are observed on the group of 100 ppm Alcian Blue. Tensile strength of groups with added Alcian Blue increased by more than 140% compare to no-addition group, but elongation is reduced. These results are due to the decrease of crystal size and changes of prior crystal growth plane from (111) and (200) to (220) due to Alcian Blue.

Adsorption of Methylene Blue by Soybean Stover and Rice Hull Derived Biochars Compared to that by Activated Carbon (메틸렌블루 제거 시 활성탄과 바이오차(대두줄기와 쌀겨)의 흡착성능 비교)

  • Lee, Gi-Bong;Kim, Hyeon-Joo;Park, Soo-Gyeong;Ok, Yong-Sik;Ahn, Johng-Hwa
    • Journal of Korean Society on Water Environment
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    • v.32 no.3
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    • pp.291-296
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    • 2016
  • This study investigated the potential use of soybean stover (SS) (0.1-0.5 g/100 mL)and rice hull (RH) (1.5-3.5 g/100 mL) derived biochars for removing methylene blue (100 mg/L) from wastewater compared to activated carbon (AC) (0.1-0.5 g/100 mL). The adsorption equilibrium data were best represented by Langmuir adsorption isotherm. The calculated maximum adsorption capacity was 71.42 mg/g for AC, 30.30 mg/g for SS, and 4.76 mg/g for RH. The adsorption kinetics was found to follow the pseudo-second order kinetics model. The rate constant was 0.0020-0.0065 g/mg.min for AC, 0.0069-0.5787 g/mg.min for SS, and 0.1370-0.3060 for RH. AC and SS biochars showed considerable potential for adsorption.