섬광의 적외선 특성 연구

임상연,박승만,Lim, Sang-Yeon,Park, Seung-Man 한국광학회 2016 한국광학회지 Vol.27 No.1

섬광을 효율적으로 활용하고 그 효과를 예측하기 위해서는 섬광의 광 방출특성을 알아야 하는 것은 필수적이다. 본 논문에서는 섬광의 효과예측과 효율적 활용을 위한 섬광의 적외선 특성을 연구하였다. 세 종류의 섬광원에 대하여 중적외선과 원적외선영역에서 적외선 특성을 측정하고 이로부터 섬광의 복사휘도와 복사온도를 추출하여 섬광의 적외선 특성을 연구하였다. 세 종류의 섬광에 대해 중 원적외선 영역에서 적외선 스펙트럼 복사휘도를 추출한 결과는 섬광 A의 복사휘도가 상대적으로 제일 강하며 섬광 C, 섬광 B 순으로 분석되었다. 동일한 연소형 섬광인 섬광 A와 B의 복사휘도가 약 10배 이상 남을 알 수 있었으며, 이는 단지 화약량의 차이에 의해 나타나는 것이므로 화약량이 증가할수록 방출 적외선의 강도가 강해지는 것으로 해석된다. 또한 폭발형 섬광 C와 연소형 섬광 A, B를 비교해도 화약량에 따라 적외선 방출 강도가 달라지는 것을 알 수 있다. 두 적외선 영역에서 측정한 복사휘도로부터 복사온도를 추출하였다. 섬광 A의 복사온도는 3300 K, 섬광 B는 1120 K, 섬광 C는 1640 K로 추출되었다. 두 적외선 영역에서 측정한 적외선 복사휘도, 복사온도 그리고 섬광의 지속시간을 종합하여 볼 때, 연소형 섬광이 폭발형보다 더 많은 적외선 에너지를 방출하는 것으로 분석되며, 이는 적외선 관측장비에 미치는 영향은 폭발형보다는 연소형이 더 크게 됨을 의미한다. 이러한 측정된 자료를 바탕으로 분석을 통해 확보된 섬광의 스펙트럼 복사휘도와 복사온도는 섬광이 적외선 장비에 미치는 영향을 추정하는데 매우 중요한 역할을 할 수 있으며, 나아가 섬광효과의 M&S에 기반을 제공할 것으로 기대된다. To effectively utilize a flash and predict its effects on an infrared device, it is essential to know the infrared characteristics of the flash source. In this paper, a study of the IR characteristics of flash light sources is carried out. The IR characteristics of three flash sources, of which two are combustive and the other is explosive, are measured with an IR characteristic measurement system over the middle- and long-wavelength infrared ranges. From the measurements, the radiances over the two IR ranges and the radiative temperatures of the flashes are extracted. The IR radiance of flash A is found to be the strongest among the three, followed by those of sources C and B. It is also shown that the IR radiance of flash A is about 10 times stronger than that of flash B, even though these two sources are the same type of flash with the same powder. This means that the IR radiance intensity of a combustive flash source depends only on the amount of powder, not on the characteristics of the powder. From the measured radiance over MWIR and LWIR ranges for each flashes, the radiative temperatures of the flashes are extracted by fitting the measured data to blackbody radiance. The best-fit radiative temperatures (equivalent to black-body temperatures) of the three flash sources A, B, and C are 3300, 1120, and 1640 K respectively. From the radiance measurements and radiative temperatures of the three flash sources, it is shown that a combustive source radiates more IR energy than an explosive one; this mean, in turn, that the effects of a combustive flash on an IR device are more profound than those of an explosive flash source. The measured IR radiances and radiative temperatures of the flash sources in this study can be used to estimate the effects of flashes on various IR devices, and play a critical role for the modeling and simulation of the effects of a flash source on various IR devices.

상악 제1 소구치의 치근면 함요도 및 치근표면적에 관한 연구

임상철,권영혁,이만섭,Lim, Sang-Cheol,Kwon, Young-Hyuk,Lee, Man-Sup 대한치주과학회 1994 Journal of Periodontal & Implant Science Vol.24 No.1

To investigate the depth of the root concavity and root surface area of the maxillary first premolar, 40 maxillary first premolars were used. All the teeth which extracted because of advanced periodontal disease and orthodontic treatment procedure, were sectioned every 1.5mm from cementoenameljunction to the apex with hard tissue microtome. Each sectioned root was taken photograph with slide film, and projected for measuring with a calibrated digital Curvi-Meter. The root surface area, percentage of the RSA and the linear variation of the RSA were calibrated for each 1.5mm section. Linear variation of the depth of root concavity was measured on mesial and distal root surface for each section using computer-aided digitizer. The results were as follows. 1. The total mean root length of maxillary first premolar was 13.48mm. Mean buccal root length of 2-rooted tooth was 12.59mm, mean palatal root length was 12.73mm, and mean root length of single rooted tooth was 13.78mm. 2. The total mean root surface area of maxillary first premolar was $194.17mm^2$, mean root surface area for 2-rooted tooth was $205.97mm^2$ and mean root surface area for single rooted tooth was $188.49mm^2$. 3. It was 59.93% of the total root surface area that the area from CEJ to coronal 6mm. And, the coronal half of the root length accounted for approximately 71.76% of the total root surface area. 4. Most deepest concavity of the mesial root surface was 0.65mm at apical 3.0mm, 4.5mm level in maxillary first premolar. And, that of the distal root surface was 0.37mm at apical 4.5mm level. 5. All of the maxillary first premolar had mesial root surface concavity. This mesial root surface concavity appeared to be more pronounced in 2-rooted tooth than single rooted tooth.

골형태형성단백질과 흡수성차폐막이 치주조직 재생에 미치는 영향

임상철,권영혁,이만섭,박준봉,Lim, Sang-Cheol,Kwon, Young-Hyuk,Lee, Man-Sup,Partk, Joon-Bong 대한치주과학회 2000 Journal of Periodontal & Implant Science Vol.30 No.4

The aim of our study is to achieve complete periodontal tissue regeneration by the application of BMP and resorbable membrane. Three beagle dogs aged over one and half years and weighed 14 to 16 kg were used in this study. Mandibular 1st, 2nd premolars were extracted bilaterally. Horizontal furcation defects were induced around 3rd, 4th premolars bilaterally. BMP-4 were applied in the right side with resorbable membranes and only resorbable membranes were applied in the left side respectively. Each animal was sacrificed at 2, 4, and 8weeks, after regenerative surgery. Specimens were prepared with Hematoxylin-Eosin stain and Goldner's modified Masson Trichrome stain for light microscopic evaluation. The results were as follows: 1. At 2 weeks after regenerative surgery, downgrowth of junctional epithelium was observed both in the membraneapplied site and BMP-4-and-membrane-applied site. 2. At 4 weeks after regenerative surgery, resorbable membranes were completely resolved, therefore would not prevent downgrowth of junctional epithelium. New bone formation, new cementum formation and Sharpey's fiber were observed in BMP-4-andmembrane-applied site. 3. At 8 weeks after regenerative surgery, downgrowth of junctional epithelium was observed in the membrane-applied site. But, new cementum formation was observed in the same site. The extensive regeneration of new bone, new cementum and remarkable formation of Shapey's fiber were showed in BMP-4-and-membrane-applied site. 4. Resorbable membranes were resolved via the cell-mediated processes. 5. Periodontal tissue regeneration were better achieved in the BMP-4-andmembrane-applied site than in the membrane-applied site. Within the above results, BMP-4 may have the strong capability to form the new bone and resorbable membrane may be able to prevent the bony ankylosis. However, resolution rate of resorbable membrane may not be enough to protect rapid epithelial downgrowth for ideal periodontal regeneration. In conclusion, I suggest BMP-4 may have the strong possibility to be utilized in the clinical periodontal treat-

치주질환 치료후 미세 결정형 수산화 인회석 함유치약의 지각과민 억제효과에 관한 임상적 연구

임상철,최진근,허익,이만섭,Lim, Sang-Chul,Choi, Jin-Cheun,Herr, Yeek,Lee, Man-Sup 대한치주과학회 1993 Journal of Periodontal & Implant Science Vol.23 No.1

The purpose of this study was to observe the control effect of hypersensitivity after periodontal treatment in the 19% microcrystalline hydroxyapatite containing toothpaste for the subject of 85 persons of both sexes, who complained hypersensitivity. At 2 weeks and 4 weeks after periodontal treatment, comparison of control effect was performed between the 19% microcrystalline hydroxyapatite containing toothpaste group and control group. The result were as follows, 1. The main causes of dentin hypersensitivity are the root exposure with gingival recession and cervical abrasion. 2. The occurance rate of hypersensitive tooth in the upper jaw was higher than that of the lower jaw, and more or less, the molar area showed more occlurance of hypersensitivity than the premolar and incisor area in both jaw. 3. Patients showed very sensitive response to the thermal stimulus, especially cold stimulus. 4. Exellent control effect of hypersensitivity in 19% microcrystalline hydroxyapatite containing toothpaste group showed 83.02% at 2weeks, 92.45% at 4weeks and these values were higher than the control group. In conclusion, we find that 19% microcrystalline hydroxyapatite containing toothpaste have the control effect of hypersensitivity and the proper toothbrushing method is the key in attaining more effectiveness of the toothpaste.

에너지 회수 회로를 이용한 새로운 LED 구동드라이브 설계

한만승(Man-Seung Han),임상길(Sang-Kil Lim),박성준(Sung-Jun Park),이상훈(Sang-Hun Lee) 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.6

The high-power LED (Light Emitting Diode) which is recently gaining popularity as a digital light source has such advantages as low power consumption, long life, fast switching speed, and high efficiency. Thus, many efforts are being made to use the high-power LEDs for general lighting. This paper proposes LED driving circuit uses a DC/DC converter that can recover energy to compensate for the current variations caused by changes in LED equivalent resistance following a temperature change instead of serial resistance. The maximum input voltage of this DC/DC converter has low voltage variations by temperature change when the rated current is formed. In order to return current to the input side, we need a high boosting at low power. Thus, to improve the low efficiency of power converter, the power converter can be configured in such a way to gather the powers of low-capacity DC/DC converters and return the total power. Experiments showed that the proposed system improved efficiency compared to the conventional LED drive using the existing DC/DC converter.

혈소판유래 및 상피성장인자가 치주조직재생에 미치는 영향

최종우,이만섭,권영혁,박준봉,허익,임상철,Choi, Jong-Woo,Lee, Man-Sup,Kwon, Young-Hyuk,Park, Joon-Bong,Herr, Yeek,Lim, Sang-Cheol 대한치주과학회 1997 Journal of Periodontal & Implant Science Vol.27 No.3

6 beagle dogs aged over one and half years and weighed 14 to 16 Kg were utilized in this study, Horizontal furcation defects were induced around 2nd, 3rd, and 4th premolars bilaterally, PDGF-BB in conjunction with EGF and PDGF-BB only were applied in the right and left premolars respectively. 2 animals were sacrificed at 4weeks, 8 weeks, and 12 weeks, after regenerative surgery respectively. Semi-thin sections using glass-knife were stained with toluidine blue for light microscopic study. The results were as follows: 1. At 4 weeks after regenerative surgery, bone formation in the PDGF-BB-applied site was thriving, but bone formation in the PDGF-BB-and-EGF-applied site was depressed. 2. Bony ankylosis was surely shown along the whole exposed root surface applied with PDGF-BB, but it was shown at the root surface near the base of the bone defect where was applied with PDGF-BB in conjunction with EGF. 3. Active bone formation was made from 8 weeks after regenerative surgery in the PDGF-BB- and-EGF-applied site. 4. Bone maturity as well as speed of bone formation in the PDGF-BB-applied site was superior to those in the PDGF-BB-and-EGF-applied site throughout the whole experimental period. Within the above results, PDGF-BB had the strong capability to form the new bone and EGF was not able to prevent the bony ankylosis thoroughly. However, EGF may have the possibility to prevent the bony ankylosis through the suppression of bone formation.

백서의 치주인대세포와 두개관세포의 혼합배양이 석회화과정에 미치는 영향

김지숙,박준봉,이만섭,권영혁,허익,임상철,Kim, Ji-Sook,Park, Joon-Bong,Lee, Man-Sup,Kwon, Young-Hyuk,Herr, Yeek,Lim, Sang-Cheol 대한치주과학회 1997 Journal of Periodontal & Implant Science Vol.27 No.4

This study was performed to evaluate the effect of mixed culture of rat's calvaria cells and periodontal ligament cells on calcification. These cells have been known to do important role on the periodontal tissue regeneration, especially alveolar bone and cementum. Experimental groups were made which based on the different rate of rat's calvaria cells and periodontal ligament cells, and then these cells were cultured with Dulbecco's Modified Eagle's Medium contained with 10% fetal bovine serum, $50{\mu}g/ml$ ascorbic acid, and 10mM/ ml $Na-{\beta}-glycerophosphate$. Each group was characterized by examining the cell proliferation rate, amount of total protein synthesis, alkaline phosphatase activity, and the number of calcified nodules in vitro. In cell proliferation rate , the cells of control groups were cultured Dulbecco's Modified Eagle's Medium contained with 10 % fetal bovine serum. The results were as follows : 1. The cell proliferation rate in control groups decreased stastically significantly along with the decrease of the rate of bone cells at 7 day and 20 day(P < 0.01). 2. The cell proliferation rate in experimental groups decreased stastically significantly along with decrease of the rate of bone cells at 3 day and 14 day(P < 0.01). 3. The amount of total protein synthesis was significantly decreased along with decrease of the rate of bone cells at 3 day and 6 day(p < 0.01). 4. Alkaline phosphatase activity showed reverse time dependent pattern and was significantly decreased along with decrease of the rate of bone cells during the experimental periods (P < 0.01). 5. Calcified nodules were observed in group 1 (Rat calvaria cells alone) for the first time, and the number of calcified nodule decreased stastically significantly along with the decrease of the rate of bone cells at 12 day(P < 0.01). From the above results, When bone cells and periodontal ligament cells were mixed cultured, the cell proliferation rate was mostly dependent on the actual rate of bone cells and same pattern was showed in amount of total protein synthesis, alkalinephosphatase activity, and the number of calcified nodules. And the calcified nodule forming capacity of bone cells was inhibited by periodontal ligament cells

AGT 시스템을 적용한 부산~김해간 경량전철 설계사례

이석무(Lee Seok Moo),김선곤(Kim Sun Gon),임상만(Lim Sang Man) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-

On August 1992, Busan-Kimhae Light Rail Transit was adopted by the first L.R.T project of Government and promoted as B.T.O configuration to cope with the rapid increase of traffic demand. The Construction of Busan-Kimhae L.R.T began on February 2006 and will be completed on July 2010. L.R.T will establish eco-friendly urban traffic system to connect Kimhae International Airport and two cities. This thesis will introduce the design case of AGT system applied to Busan-Gimhae L.R.T.

고정교(FCM) 시공사례 : 대구-부산간 고속도로 6공구

김선곤(Kim Sun-Kon),김종수(Kim Jong-Soo),임상만(Lim Sang-Man) 대한토목학회 2005 대한토목학회 학술대회 Vol.2005 No.10

[미발표] 카린시안 적용구간 지보패턴 설계 사례

김영덕(Young-Duck Kim),신현강(Hyeon-Kang Shin),임상만(Sang-Man Lim),우성원(Sung-Won. Woo),신현곤(Hyeon-Kon Shin) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.10

ㅇㅇ차량기지 부지계획고(E.L 129.57m)가 본선 ㅇㅇ터널 천단부와 5~6m 이격되어 계획됨에 따라 저토피구간의 터널안정성 확보를 위하여 터널 상부토피를 굴착하고 크라운 아치 콘크리트 구조물을 시공한 다음 다시 되메움을 실시하여 개착구조물의 비탈면 과다절취와 보강공법의 고비용 문제를 해결할 수 있는 카린시안공법을 적용하였다. 해당구간의 지층이 단층파쇄대가 발달한 지역을 고려하여 암반등급을 선정하였으며, 카린시안공법지보패턴의 적정성을 기존 시공사례, 수치해석결과를 종합적으로 검토하여 선정하였다. Since the site elevation of ○○ Railway Depot was planned to separate 5~6m from the Top End of main line of ○○ Tunnel, it was necessary to insure the tunnel stability at a shallow depth. Hence, Caninthian Cut and Method was applied to prevent the excessive slope cut of Cut and Cover tunnel section and solve the high cost problem of reinforcement method. The construction sequences are as follows; First step is to excavate the soil cover of the Tunnel. Then, the arch crown concrete structure is constructed and back filled. The rock grade was measured considering the site characteristic, that is, fault fractured zones of the specific sections. The validity of support patterns of Caninthian Cut and Cover Method was evaluated comprehensively regarding previous construction cases and numerical analysis results.