• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.11a
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• pp.437-438
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• 2010

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.35 no.10
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• pp.927-933
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• 2007

Heat transfer characteristic near a sharp fin was studied in a supersonic flow. Mach number and the Reynolds number were 3 and $5{\times}10^7$ respectively. Infra-red thermography was used to obtain the variation of surface heat transfer coefficient distribution. The angles of attack were ranged from $12.5^{\circ}$ to $20^{\circ}$ and the numerical analysis and the oil flow method were conducted to understand flow fields near a sharp fin.

• 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.

• Proceedings of the KWS Conference
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• 1996.10a
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• pp.142-144
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• 1996

This paper discusses the application of infra-red thermography in monitoring the robotic arc welding process, and it's potential for weld bead dimension and seam tracking control. Thermal images illustrating weld pool formation dynamics and heat distribution phenomena are digitized and their characteristics are measured. At each sampling point the maximum depth of penetration is recorded together with additional information regarding weld bead placement in relation to the seam location. Deficiencies such as incomplete penetration and lack of side wall fusion are readily identified and can be remained during the process. The technique can help an increase in productivity and weld quality by minimizing the amount of post process rework and inspection efforts needed otherwise.

• Korean Journal of Acupuncture
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• v.20 no.1
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• pp.1-20
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• 2003

This study was examined for effects of acupuncture of Zusanli (ST36) on the abdominal thermography of health subject. The volunteers who participating in this study had taken rest for 20-30 mins in room temperature (23-$25^{\circ}C$) before the examination and informed them what to prohibit smoking, drinking and administration of drug for the previous day. The thermography of abdomen including a below part of the chest was taken using Infra-Red Imaging System (IR 2000, MEDI-CORE Co, Korea) by time interval of 15 minutes at 15 min before, just before and 15 min after, 30 min after and 45 min after acupuncture stimulation. Acupuncture was applied to the left ST36 acupoint for 30 mins. The results showed that acupuncture of ST36 significantly had more potencies of changes on all the of abdominal thermography than those of control group. Also, it was observed that the quantities of thermal changes following acupuncture of ST36 been increased significantly comparing that of control group at all the ROIs (region of interest). Observed the thermography classified by ROI, however, it was failed that acupuncture of ST36 could modulate the specific areas concerning to the abdominal pathway of Stomach Meridian. These results suggest that acupuncture of ST36 may modulate thermal distributions and changes of abdominal areas including the below of chest.

• Korean Journal of Acupuncture
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• v.20 no.2
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• pp.1-20
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• 2003

This study was examined for characteristics of acupuncture of LU10 on the abdominal thermography of health subject. The volunteers who participating in this study had taken rest for 20 - 30 mins in room temperature $(23-25^{\circ}C)$ before the examination and informed them what to prohibit smoking, drinking and administration of drug for the previous day. The thermography of abdomen including a below part of the chest was taken using Infra-Red Imaging System (IR 2000, MEDI-CORE Co., Korea) by time interval of 15 minutes at 15 min before, just before and 15 min after, 30 min after and 45 min after acupuncture stimulation. Acupuncture was applied to both LU10 for 30 mins. The results showed that acupuncture of LU10 for 30 mins had more potencies of changes on all the ROIs of abdominal thermography than those of control group. Also, those responses were significantly clear at the A1, A3, A6, A7 and A9 areas. It was observed that the quantities of thermal changes following acupuncture of LU10 been increased significantly comparing that of control group at the all ROIs (region of interest). These effects have more potencies at the upper (A1 and A2) and below (A7, A8, A9) abdominal areas than midline ones (A4, A5, and A6). These results suggest that acupuncture of LU10 having the characteristics of controls of chill and fever (寒熱) may modulate thermal distributions and changes of abdominal areas including the below of chest.

• Journal of the Korea Institute of Military Science and Technology
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• v.20 no.6
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• pp.767-773
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• 2017

Infrared stealth is an important technology for naval ships. This technology helps improve the anti-detection performance and survivability of naval ships. In general, the infrared signature of naval ships are categorized into internal and external heat source. External signature are generated by ship surface heating by solar flux as well as the complicated heat transfer process with the surrounding weather condition. Modern naval ships are equipped with seawater injection nozzles on the outside for nuclear, biological and, chemical, and these nozzles are used to control external signature. Wide nozzle placement intervals and insufficient injection pressure, however, have reduced seawater dispersion area. To address this problem, nozzle installation standards must be established. In this study, an actual-scale experimental system was implemented to provide the evidence for nozzle installation standards in order to reduce the infrared signature of naval ships. In addition, the environmental conditions of the experiment were set up through computational fluid dynamics considering the ocean climate data and naval ship management conditions of South Korea. The dispersion distance was measured using a high-resolution thermography system. The flow rate, pipe pressure, and dispersion distance were analyzed, and the evidence for the installation of seawater injection nozzles and operation performance standards was suggested.

• Korean Journal of Acupuncture
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• v.21 no.3
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• pp.21-38
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• 2004

Objectives : Moxibustion has been become very useful tool to prevent and treat various diseases with acupuncture in oriental medicine. Expecially, moxibustion combining the heat stimulation and chemical stimulation of Artemisiae Argyi has a non-invasive characteristics comparing to the other therapeutic tools. However, because the moxibustion makes the patient's skin be burn by the combustible feature of moxibustion, most of people have been scared of being scald. Methods : In this study, we have developed new non-combustible moxibustion tools in collaboration with company (Hana Medical, co. and ICURE, co.) and tested the efficacy through effects of moxibustion of Cheon-chu $(ST_{25})$ on the abdominal thermography of health subject. The non-combustible moxibustion has main characteristics of controlled heating to inhibit being scald and heat stimulation lasting over 1 hrs. Also, to induce the chemical stimulation, the bottom contacting with skin was coated by the extract of artemisiae argyi. The volunteers who participating in this study had taken rest for 20 - 30 mins in room temperature $(23-25^{\circ}C)$ before the examination and informed them what to prohibit smoking, drinking and administration of drug for the previous day The thermography of abdomen including a below part of the chest was taken using Infra-Red Imaging System (IR 2000, MEDI-CORE Co., Korea) by time interval of 15 minutes. Results : The results showed that moxibustion of Cheon-chu $(ST_{25})$ had more potencies of changes on all the ROIs of abdominal thermography than those of control group. Also, it was observed that the quantities of thermal changes following moxibustion of Cheon-chu $(ST_{25})$ been increased significantly comparing that of control group at all the ROIs (region of interest). Observed the thermography classified by ROI, however, moxibustion of Cheon-chu $(ST_{25})$ could modulate ipsilateral specific areas concerning to the abdominal pathway of Stomach Meridian. Conclusion : These results suggest that new non-combustible moxibusion has some similarity as like as the conventional moxibustion and moxibustion of Cheon-chu $(ST_{25})$ may modulate thermal changes of abdominal areas.

• KIEAE Journal
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• v.16 no.3
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• pp.103-112
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• 2016

Recently, many New Han-oks have been constructing in all over the country to popularize as a type of green house. But, achievement of thermal performance of external wall is still the very important issue to become popular. Purpose: The purpose of this study is to verify the thermal performance level of modern New Han-ok through Temperature Difference Ratio inside(TDRi) analysis at corners of the external wall in Han-ok. Method: To achieve this goal, measurements were carried out in 12 Han-oks(experimental mock-up(1), exhibition Han-ok(1), happy village Han-oks(10)) by taking a infra-red thermography using thermal video system. Following are analysis items about connection joint between wall and wood columns of external wall conditions; the part between external wall and external wall(2D), external wall and ceiling(or floor)(2D), 2 external walls and ceiling(or floor)(3D) and so on. Result: It was analyzed that the probability of condensation at most of connection joint appear high and TDRi of 3D corners is higher than that of 2D corners in general. It means that the development of construction techniques about connection joint between wood columns and external wall is still required. The results of this study may be used to improve the construction technology of new Han-ok and as a basis for the specifying the desired thermal comfort environment of dwelling.

• Journal of Chest Surgery
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• v.37 no.1
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• pp.98-101
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• 2004

Complex regional pain syndrome is pain disorder which is characterized by aching pain, marked painful sensation, hypothermesthesia, vasomotor dysfunction, hyperhidrosis, impairment of motor function, trophic changes of distal part of not-operated extremity after trauma and operation. Pain produce increased sensitivity to catecholamine and diagnosed by infra red thermography and Treatment consists of pain relief and rehabilitational therapy for functional restoration of affected limb. We experienced a case of complex regional pain syndrome in a 16-year-old man after wedge resection of pulmonary apex for bullae and report this case with a review of the literature.