• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2003년도 학술대회논문집
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• pp.133-137
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• 2003

When a light is projected upon a material, part of its radiation energy is absorbed and the rest is reflected or transmitted according to the nature of the material. The molecules of the substance absorbing a light obtains the radiation energy to the wavelength of the light to make photochemical degradation by ultraviolet ray or thermal reactions like physical damage by infrared ray. The degree of damage by radiation energy varies to the substances of materials, the spectral power distribution of the light source and the duration of irradiation. Because the damage brings about a devaluation of material and once damaged, it is irretrievable, it is necessary to minimize the damage and conserve the native quality of a material by a protective lighting system. A measuring system was set up to measure the temperature rise of each sample by infrared radiation from light sources. And the temperature rise and temperature distribution by various infrared lamps were measured with varying time.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 학술대회 논문집
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• pp.131-135
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• 2004

The molecules of the substance absorbing a light obtains the radiant energy to the wavelength of the light to make thermal reactions or photochemical reactions. Specially, thermal reactions by infrared radiation brings about physical damage by temperature rise process or temperature drop process of the material. In this study, a measuring system was set up to measure the temperature rise and temperature drop of each sample by infrared radiation from light source. And a physical demage of samples by infrared radiation were measured using the measuring system.

• The Korean Journal of Pain
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• 제14권1호
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• pp.37-40
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• 2001

Background: It had been reported by authors that linear polarized infrared light radiation (Superizer: SL) near the stellate ganglion had a similar effect on the change of skin temperature of hand compared with the stellate ganglion block (SGB). We hypothesized that this was due to dilatation of vessels and an increased blood flow. The aim of this study was to measure the velocity of blood flow in peripheral vessels after linear polarized infrared light radiation near the stellate ganglion and to compare the effect of SL with that of SGB using local anesthetics. Methods: Forty patients whose clinical criteria were matched for the symptoms of SGB were selected for study. We radiated the stellate ganglion by linear polarized infrared light radiation and measured the blood flow of radial artery using Ultrasound Doppler blood flow meter before and after 10, 20 and 30 minutes post-radiation. After 3 days, SGB was performed using 8 ml of 1% mepivacaine to the same patient, and the radial artery blood flow was measured in the same manner. Results: The blood flow velocity was increased by 40% and 27% at 10 min and 20 min after SL and by 42% and 41% at 10 min and 20 min after SGB. However, there was no statistically significant difference in blood flow velocity between SGL and SGB. Conclusions: We could conclude that linear polarized radiation is a clinically simple and useful noninvasive therapeutic tool in clinical area.

• 조명전기설비학회논문지
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• 제19권2호
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• pp.28-34
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• 2005

적외선복사에 의한 열적 반응은 물질의 온도상승이나 온도하강 등의 과정을 통하여 물질의 물리적 손상을 초래한다. 본 연구에서는 광원의 적외선복사에 의한 시료의 온도상승과 적외선복사량을 측정할 수 있는 측정시스템을 구축하고, 전시조명용으로 많이 사용하는 광원들을 대상으로 각 광원의 복사조도를 변화시키면서 온도변화와 적외선 복사량의 변화를 각각 측정하였다. 측정의 결과를 토대로 복사조도와 온도 및 적외선복사량간의 함수관계를 파악하고, 복사조도의 변동에 따른 온도변화 및 적외선복사량의 변화를 비교, 분석하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2003년도 춘계학술대회 논문집 기술교육전문연구회
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• pp.8-11
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• 2003

We propose that when combustible burn with contain carbon, introduce fire detector with sensor of private-use detectable light energy as infrared and ultraviolet in energy of electromagnetic-wave type radiate from flame, method for correct discrimination to resemble fire produce false alarm of detector such as sun light, hot object radiation, are welding. This research using infrared sensor is pyroelectric infrared sensor based black body radiation theory. Ultraviolet sensor is uv Tron using gas multiplication effect to current discharge and photoelectric effect of metal. To have high sensibility and to gain proper output voltage, it has high responsive performance. This research introduced UV/IR compound type flame detector and proposed method of false alarm reduced to resemble fire. The result propres the prevention and extinction of fire technique degree, certificated operation of detector.

• 한국정보전자통신기술학회논문지
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• 제3권4호
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• pp.16-22
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• 2010

본 연구에서는 분광광도계 시스템에서 700-1,100 nm 근적외선 대역의 조명 영향평가에 대한 연구를 수행하였다. 분광광도계는 분자영상 의학 분야 및 의료용 장비에 다양하게 사용되고 있다. 근적외선 대역에서의 조명 영향평가를 알아보기 위하여 본 연구에서 사용한 색상지는 표준반사물질 및 만셀 표준 색상인 빨강, 노랑, 초록, 파랑 색상지를 사용하였다. 분광광도계 시스템의 근적외선 대역을 비교 분석하기 위하여 실험 재료 색상지를 색상지별 20번 측정하였고, 조명은 백열등, 형광등, 인버터 형광등 및 조명 조합으로 실험하였다. 백열등, 형광등, 인버터 형광등의 단일 조명에서는 백열등에서 가장 높은 분광반사율 반응을 보였고, 조명들의 조합에서도 백열등이 포함된 조명 조합이 높은 분광반사율을 보였다. 따라서 분광광도계의 근적외선 대역을 이용하여 분광광도시스템을 구축한다면, 분광반사율이 높은 백열등을 적용하는 것이 좋은 것으로 판단되었다.

• 한국기계기술학회지
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• 제20권6호
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• pp.770-775
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• 2018

In this study, the characteristics of muscle relaxation were analyzed by the experimental and numerical method. A skin tissue was produced by imitational biological tissue using the agar powder, saline solution and sugar. The tissue was exposed to three types of wavelength-blue visible radiation(410 nm), red visible radiation(635 nm), and infrared ray(830 nm). The temperature results along the depth of tissue were measured according to the variation of light wavelength and irradiation time. The temperature change of the tissue shown up similar pattern regardless of the light wavelength kinds. The wavelength of infrared ray penetrated strongly into tissue between 3.2 mm and 11.4 mm. Also, the temperature change with the irradiation time was small, and the temperature value of the infrared ray was the largest. As a result, the muscle relaxation will occur mainly at the infrared wavelength.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.67.1-67.1
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• 2011

Knowledge of the solar radiation components and classified wavelength are essential for modeling many solar energy systems. This is particularly the case for applications that concentrate the incident energy to attain high photo-dynamic efficiency achievable only at the higher intensities. In order to estimate the performance of concentrating solar systems, it is necessary to know the intensity of the beam radiation, as only this components can be concentrated, and The new solar system can generate electricity from ultraviolet and infrared light as well as visible light. The Korea Institute of Energy Research(KIER) has began collecting solar radiation components data since January, 1988, and solar radiation classified wavelength data since November, 2008. KIER's solar radiation components and classified wavelength data will be extensively used by concentrating solar system users or designers as well as by research institutes.

• 천문학논총
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• 제32권1호
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• pp.63-65
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• 2017

The zodiacal light emission is the thermal emission from the interplanetary dust and the dominant diffuse radiation in the mid- to far-infrared wavelength region. Even in the far-infrared, the contribution of the zodiacal emission is not negligible at the region near the ecliptic plane. The AKARI far-infrared all-sky survey covered 97% of the whole sky in four photometric bands with band central wavelengths of 65, 90, 140, and $160{\mu}m$. AKARI detected the small-scale structure of the zodiacal dust cloud, such as the asteroidal dust bands and the circumsolar ring, in far-infrared wavelength region. Although the most part of the zodiacal light structure in the AKARI far-infrared all-sky image can be well reproduced with the DIRBE zodiacal light model, there are discrepancies in the small-scale structures. In particular, the intensity and the ecliptic latitude of the peak position of the asteroidal dust bands cannot be reproduced precisely with the DIRBE models. The AKARI observational data during more than one year has advantages over the 10-month DIRBE data in modeling the full-sky zodiacal dust cloud. The resulting small-scale zodiacal light structure template has been used to subtract the zodiacal light from the AKARI all-sky maps.

• Biomolecules & Therapeutics
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• 제22권6호
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• pp.491-496
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• 2014

Photobiomodulation utilizes monochromatic (or quasimonochromatic) light in the electromagnetic region of 600~1000 nm for the treatment of soft tissues in a nondestructive and nonthermal mode. It is conceivable that photobiomodulation is based upon the ability of the light to alter cell metabolism as it is absorbed by general hemoproteins and cytochrome c oxidase (COX) in particular. Recently it has been suggested radiation of visible and infrared (IR) activates retrograde signaling pathway from mitochondria to nucleus. In this review, the role of COX in the photobiomodulation will be discussed. Further a possible role of water as a photoreceptor will be suggested.