• The Bulletin of The Korean Astronomical Society
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• v.37 no.1
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• pp.88.1-88.1
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• 2012

We observed a surge associated with an Ellerman bomb using the Fast Imaging Solar Spectrograph(FISS) of the New Solar Telescope at Big Bear Solar Observatory. The surge was seen in absorption and varied rapidly both in H alpha and Ca II 8542 line. It originated from the Ellerman bomb, and was impulsively accelerated to 20km/s of the blueshift(upward) motion. Then the gradual change from blueshift of 20km/s to redshift of 40km/s occurred in 20 minutes. Based on the measured line-of-sight velocities, we estimated the material reached up to about 5,000km height. We inferred physical parameters of the surge by adopting the cloud model, and found that the temperature of the surge material was about 25,000K and the non-thermal velocity was about 10km/s. Our results suggest that the surge might be heated intensely after it was ejected from the Ellerman bomb.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.31 no.6 s.261
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• pp.507-513
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• 2007

This study represents the temperature uniformity in catalytic converter. Present research model type is a monolithic catalytic converter. This type was been widely used for complying the regulations of pollutant emissions from automobiles. The mean experimental parameters are engine speed and ceramics monolith in the catalytic converter. The experimental test engine model used was the 124.1cc motorcycle engine. The experimental study using thermal imaging method shows the megaphone type model has larger effective area than the basic model. The rate of effective area in the basic model is about 8.9 % and the megaphone type model are 41.52 %, 34.60 %, 33.43 %, 25.43 %, 17.82 % according to the diffuser angle $4^{\circ}\;to\;8^{\circ}$. In conclusion, the megaphone type monolithic converter has higher efficiency of reducing the pollution with less noise compared to the basic shape. We believe this will be very important as a design guide of the advanced motorcycle.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.27 no.5
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• pp.612-619
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• 2003

This work experimentally studies the fundamental mechanisms by which the ultrasonic vibration enhances convection and pool boiling heat transfer. A thin platinum wire is used as both a heat source and a temperature sensor. A high speed video imaging system is employed to observe the behavior of cavitation and thermal bubbles. It is found that when the liquid temperature is below its boiling point, cavitation takes place due to ultrasonic vibration while cavitation disappears when the liquid reaches the boiling point. Moreover, when the gas dissolved in liquid is removed by pre-degassing, the cavitation arises only locally. Depending on the liquid temperature, heat transfer rates in convection, subcooled boiling and saturated boiling regimes are examined. In convection heat transfer regime, fully agitated cavitation is the most efficient heat transfer enhancement mechanism. Subcooled boiling is most enhanced when tile local cavitation is induced after degassing. In saturated boiling regime, acoustic pressure is shown to be a dominant heat transfer enhancement mechanism.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.20 no.2 s.33
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• pp.171-178
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• 2007

Objective : The aim of this study was to evaluate Yangdorak and D.I.T.I. for analysis of Symptom-complexes. Method : This study was selected 26 acne patients in Dongshin University Oriental Medical Hospital. We used Yangdorak (SME5800N, Sord Medicom Co., Korea) and D.I.T.I. (Digital Infrared Thermal Imaging 256, Dorex Inc, Orange CA, USA) and investigated the results of Yangdorak and D.I.T.I.. We made a comparison according to Deficiency or Excess(虛實) of acne patients. Result : In comparing Yangdorak results according to Deficiency or Excess(虛實) of acne patients, Triple-energizer(三焦), Intestine(大腸), Liver(肝), Stomach(胃) meridian in Excess group are higher than Deficiency group, and Kidney(腎) meridian in Deficiency group are lower than Excess group. D.I.T.I. reveald hyperthemia of face and chest on acne patients. The temperature of face and chest on Excess group is higher than Deficiency group. There is no statistically significant value compared with data of other group.

• Journal of the Optical Society of Korea
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• v.14 no.4
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• pp.316-320
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• 2010

We report an application of full-field optical coherence tomography (FF-OCT) for identifying counterfeit bank notes. The depth-resolved imaging capability of FF-OCT was used for tomographic identification of superficially-identical objects. By retrieving the internal structures of the security feature (cash hologram) of an original banknote, we could demonstrate the feasibility of FF-OCT to identify counterfeit money. The FF-OCT images showed that the hologram consisted of micron scale multi-coated layers including an air gap. Therefore, it is expected that FF-OCT has potential as a new non-invasive tool to discern imitation of currency, and it would find applications in a wide field of counterfeit sciences.

• The Journal of Korean Medicine
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• v.24 no.2
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• pp.19-31
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• 2003

Objectives : This study examined effects of kyeong points (經穴)' acupuncture of three hand yang collaterals (手三陽經) on the facial thermography in health subjects, because the kyeong point in Yang collaterals belongs to the characteristic of the five elements (五行)meaning fire (火). Methods : The volunteers who participating in this study rested for 20-30 min. atroom temperature (23-$25^{\circ}C$) before the examination and were informed to avoid smoking, drinking and use of any drugsfor the previous day. The thermography of the face was taken using Infra-Red Imaging System (IR 2000, MEDI-CORE Co., Korea) at time intervals of 15 minutes : at 15 min before, just before and after, 15 min after, 30 min after and 45 min after acupuncture stimulation. Acupuncture was applied to the left kyeong points (經穴)' of three hand yang collaterals (手三陽經) for 30 minutes. Results : The results showed that kyeong points (經穴)' acupuncture of three hand yang collaterals (手三陽經) decreased the temperature of all the areas of the facial surface comparing to those of the control group. Also, it was observed that the quantities of thermal changes following acupuncture of ST36 increased in the all ROIs (regions of interest) compared to those of the control group. Conclusions : Observing the thermography classified by ROI, it was clear that acupuncture of kyeong points (經穴) of three hand yang collaterals (手三陽經) could modulate thermogram of the facial area however, it is necessary to undertake more investigation supporting these results.

• The Journal of Internal Korean Medicine
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• v.39 no.5
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• pp.914-928
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• 2018

Objectives: This case report examines the effects of traditional Korean medicine for unspecified tremor with xerostomia caused by psychometric drug intake. Methods: A patient who suffered from unspecified tremor with xerostomia caused by psychometric drug intake was treated with acupuncture, pharmacopuncture, and traditional Korean medicine for 30 days. We provided the patient with herbal medicines including Ondam-tang-gagam (溫膽湯加減), Pumsimgieum-gagam (忿心氣陰加減), and Hoichunyanggyeok-san-gami (回春凉隔散加味). Symptoms were charted and evaluated using the Yin-deficiency questionnaire score, Yin-deficiency scale score, dry mouth symptom questionnaire, and visual analogue scale. Results: After treatment with Korean Medicine and pharmacopuncture, the frequency and degree of tremor has decreased, and degree of Xerostomia also improved. The Scores of Yin-deficiency questionnaire score, Yin-deficiency scale score, dry mouth symptom questionnaire, and visual analogue scale were also improved. And we could see reduction in the level of distribution of gastrointestinal heat at Digital Infrared Thermal Imaging test. The patient's Symtoms (Xerostomia as well as unspecified tremor) were improved after treated with Korean Medicine and pharmacopuncture. Conclusion: Korean medicine treatments may be valuable for xerostomia caused by psychometric drug intake.

• The Journal of Korean Physical Therapy
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• v.32 no.2
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• pp.80-87
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• 2020

Purpose: Some patients who have undergone surgery due to lumbar disc herniation still complain of leg pain and other abnormal sensations. Therefore, the study examined the effects of the neurodynamics on pain and other abnormal nerve sensations in post-operated patients with lumbar disc herniation. Methods: The participants of this study comprised 20 adults (10 males and 10 females) who were diagnosed with lumbar disc herniation. The subjects were classified into two groups of 10 patients each in the lower extremity neurodynamics (LEN) and lumbar stabilization exercise (LSE) groups. Each intervention was applied twice a day for one week and was composed of two different exercise patterns; one was applied by a therapist, and the other was performed by the patients themselves. The data were analyzed using assessment methods of Digital Infrared Thermal Imaging (DITI), Toronto clinical neuropathy scoring system (TCNSS), Sympathetic Skin Response (SSR) test, and Oswestry Disability Index (ODI) scale. Results: Significant differences in TCNSS, DITI, ODI scale were observed between the LEN and LSE group (p<0.01). On the other hand, there was no significant difference in the SSR test between pre and post-treatment (p>0.05). Conclusion: The results indicated that neurodynamics treatment is effective in pain reduction and abnormal sensations, such as leg muscle cramps, in post-operated patients with lumbar disc herniation.

• Korean Journal of Remote Sensing
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• v.36 no.4
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• pp.609-626
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• 2020

Satellite-based land surface temperature (LST) has been used as one of the major parameters in various climate and environmental models. Especially, Moderate Resolution Imaging Spectroradiometer (MODIS) LST is the most widely used satellite-based LST product due to its spatiotemporal coverage (1 km spatial and sub-daily temporal resolutions) and longevity (> 20 years). However, there is an increasing demand for LST products with finer spatial resolution (e.g., 10-250 m) over regions such as urban areas. Therefore, various methods have been proposed to produce high-resolution MODIS-like LST less than 250 m (e.g., 100 m). The purpose of this review is to provide a comprehensive overview of recent research trends and challenges for the downscaling of MODIS LST. Based on the recent literature survey for the past decade, the downscaling techniques classified into three groups-kernel-driven, fusion-based, and the combination of kernel-driven and fusion-based methods-were reviewed with their pros and cons. Then, five open issues and challenges were discussed: uncertainty in LST retrievals, low thermal contrast, the nonlinearity of LST temporal change, cloud contamination, and model generalization. Future research directions of LST downscaling were finally provided.

• Journal of Sasang Constitutional Medicine
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• v.28 no.3
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• pp.276-285
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• 2016

Objectives The purpose of this case was to report significant improvement of abdominal pain, constipation and a slight improvement of tremor after treatment by Sasang Constitutional Medicine to the patient with Parkinson's disease.Methods The patient was diagnosed as Soyangin according to the result of Sasang constitutional diagnosis, and treated by Sasang constitutional medications and acupuncture. The progress was evaluated with the Global Assessment Scale (GAS).Results The abdominal pain was reduced from Numeric Rating Scale (NRS)9 to NRS1 and headache was reduced from NRS5 to NRS3. The tremor was reduced to GAS 10. Unified Parkinson Disease Rating Scale (UPDRS) was reduced from 40 to 27. The difference of heat distribution between left and right side was reduced and the abdomen was more warmer on Digital Infrared Thermal Imaging (DITI).Conclusions Sasang constitutional medicine can be a solution for the non motor symptoms caused by Parkinson's disease.