• Fashion & Textile Research Journal
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• v.10 no.5
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• pp.771-778
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• 2008

The natural dyeing of cotton fabric with Perilla frutescens var. acuta extract was investigated. The proper extraction temperature and time were $100^{\circ}C$ and 120 minutes. The proper temperature, time and colorant powder concentration for the dyeing of cotton fabric with Perilla frutescens var. acuta powder were $90^{\circ}C$, 60 minutes and 15%(o.w.b.), respectively. In various mordanted methods, the K/S values of simultaneous-mordanted methods were higher than those of pre-and post-mordanted methods. And the Cu-and Fe mordant showed higher K/S values than those of other mordants. Light colorfasness of mordanted cotton fabric was poor, but the other colorfasnesses were shown to be good. The cotton fabric mordanted with Cu mordant was showed effective bacterial reduction.

• Proceedings of the IEEK Conference
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• 2000.11c
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• pp.153-156
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• 2000

A novel silicon retina chip based on the information processing in the vertebrate retina was designed. The chip has a novel wiring structure in which all pixels are connected through the channel of MOS transistors, which simplifies a wiring structure compared with conventional resistive networks. The proposed structure minimizes the pixel area and certainly increases a fill factor since each pixel consists of only two photodiodes and three MOS transistors. It also enables the chip to operate over a wide range of light intensity by adjusting its conductance with the gate voltage. Simulation results with SPICE showed that the chip could extract the edge of input images successfully.

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.253-254
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• 2007

• Journal of KSNVE
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• v.8 no.3
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• pp.420-427
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• 1998

A strain modal testing method has been applied to a cantilever beam to investigate the characteristics of the method. By applying the method to an analytical and an experimental system, it was shown that accurate modal parameters can be estimated from strain frequency response functions using a current modal parameter extraction algorithm. The modal parameters estimated by the method are more accurate than those by the conventional method which uses accelerometers when the tested system is of light weight. The method can be used to predict strain responses and excitation forces for given excitation forces and responses, respectively. Cracks on a structure can be detected by measuring strian FRFs and comparing them with the original ones.

• Journal of the Korean Society of Costume
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• v.52 no.3
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• pp.19-27
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• 2002

This paper surveys the mordanting and dyeing properties of Sophora japonica L. Appropriate extraction, dyeing and mordanting condition of Sophora japonica L. were determined, and the effect of mordanting method on dye uptake and color fastness of dyed fabric was investigated. The maximum absorbance of Sophora japonica L. solution was 367.6mn, rutin solution was 365.6mn. The color of Sophora japonica L. solution was affected at pH 2 and pH 8~9. The optimum temperature to extract Sophora japonica L. was during 1 hour in 8$0^{\circ}C$. The effective dyeing temperature and time of silk were 10$0^{\circ}C$, 60min. K/S value of dyeing fabrics was increased by pre-mordanting treatment, especially Fe, Sn, Cr. In the case of Sophora japonica L. light fastness was increased by Fe mordanting. Perspiration fastness was better in acidic solution than that in alkaline solution. Fastness to rubbing and dry-cleaning were good in general.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2017.05a
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• pp.161.1-161.1
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• 2017

최근 OLED기술을 조명에 응용하고자 하는 연구가 급증되고 있다. 이는 유연하고, 대면적 확장이 가능하며, 다양한 형태 구현에 있어 장점이 존재하기에 차세대 감성조명으로써 주목을 받고 있다. 고효율의 OLED 조명을 위해서는 저저항/고유연의 투명전극 소재의 개발을 통해 전기적 손실을 최소화해야하고, 광추출층의 적용을 통해 내부에서 생성된 빛을 외부로 잘 방출시켜 광학적 손실을 최소화해야한다. 이를 위해 많은 다양한 투명전극에 대한 연구와 광추출을 위한 방법에 대한 연구가 진행이 되고 있고, 두 가지 효과를 한번에 얻을 수 있는 집적기판에 대한 수요가 높아지고 있다. 본 연구는 인쇄공정과 플라즈마 공정을 통해, 미세배선이 함몰된 집적 기판을 개발하여 저저항/고유연 투명전극을 구현하였고 기판상 나노구조체 형성을 통해 광추출 효율을 기존에 비해 20% 이상 향상시킬 수 있었다. 이러한 기판은 향후 대면적 OLED 조명에 응용이 가능할 것이라 전망한다.

• Fashion & Textile Research Journal
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• v.5 no.4
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• pp.399-407
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• 2003

The natural dyeing of silk fabric with Purple-Fleshed Sweet Potato (PSP) was investigated. The colorant was extracted with distilled water, and the color difference (${\Delta}E^*$) was increased with increasing the amount of PSP in extraction. The proper temperature and time for the extracting of colorant with PSP were $60^{\circ}C$ and 60 minutes. The optimum temperature, time and pH for the dyeing of silk with extracted PSP were $60^{\circ}C$, 60 minutes and pH 4 respectively. In various mordanted methods, the color difference values of post-mordanted silk fabric were higher than those of pre- and simultaneous-mordanted method. And the wide range of colors( GY, Y, YR, R, RP) were obtained according to various mordants, mordanting methods and mordant concentrations. Light colorfastness of the mordanted silk fabric was improved. Laundering colorfastness, dry cleaning colorfastness and perspiration colorfastness were shown to be good.

• Journal of The Korean Dental Society of Anesthesiology
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• v.7 no.2
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• pp.126-130
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• 2007

Sedation is often indicated for the relief of anxiety for outpatient oral surgery. In combination with local anesthesia, it is safe and effective method of treatment. However, it is not always effective in allowing the physician to complete the planned oral surgery procedure. On occasion, a procedure is left unfinished due to patient combativeness and discomfort and hypertension in spite of increase in sedative doses. Episodic increases in blood pressure were most commonly caused by light anesthesia or sedation and by the patient's experience of pain during treatment. Female patient was 42 years old. blood pressure is 150/90 mmHg. Extraction and implant surgery was done under IV sedation. During seadtion, her blood pressure was increased (200/100 mmHg). Surgery was stopped. She was done monitoring blood pressure. The blood pressure was decreased to 130/90 mmHg. Sedation was failed due to significant hypertension. Blood pressure is seldom increased during sedation but we should evaluate the patient's medical history and know guideline for hypertension crisis.

• Preventive Nutrition and Food Science
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• v.13 no.2
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• pp.122-127
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• 2008

The aroma constituents of Chrysanthemum indicum L. were separated by the hydro distillation extraction method using a Clevenger-type apparatus, and were analyzed by gas chromatography-mass spectrometry (GC/MS). The yield of Chrysanthemum indicum L. flower oil was 2.0% (w/w) and the color was light golden yellow. Sixty-three volatile flavor components, which make up 89.28% of the total aroma composition of the flower oil, were tentatively characterized. This essential oil contained 35 hydrocarbons (48.75%), 12 alcohols (19.92%), 6 ketones (15.31%), 3 esters (4.61%), 5 aldehydes (0.43%), 1 oxide (0.22%), and 1 miscellaneous component (0.04%). ${\alpha}$-Pinene (14.63%), 1,8-cineol (10.71%) and chrysanthenone (10.01%) were the predominant volatile components in Chrysanthemum indicum L., an aromatic medicinal herbaceous plant.

• Journal of Sensor Science and Technology
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• v.29 no.3
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• pp.162-171
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• 2020

The incidences of cardiovascular diseases are rapidly increasing worldwide. The electrocardiogram (ECG) is a test to detect and monitor heart issues via electric signals in the heart. Presently, detecting heart disease in real time is not only possible but also easy using the myDAQ data acquisition device and LabVIEW. Hence, this paper proposes a system that can acquire ECG signals in real time, as well as detect heart abnormalities, and through light-emitting diodes (LEDs) it can simultaneously reveal whether a particular waveform is in range or otherwise. The main hardware components used in the system are the myDAQ device, Vernier adapter, and ECG sensor, which are connected to ECG monitoring electrodes for data acquisition from the human body, while further processing is accomplished using the LabVIEW software. In the Results section, the proposed system is compared with some other studies based on the features detected. This system is tested on 10 randomly selected people, and the results are presented in the Simulation Results section.