국립공원 내 파충류 자원의 효율적인 관리를 위한 PIT(passive integrated transponder) tag과 무선추적방법(radio telemetry)의 적용

이정현 ( Jung Hyun Lee ),이헌주 ( Heon Joo Lee ),라남용 ( Nam Yong Ra ),김자경 ( Ja Kyeong Kim ),엄준호 ( Jun Ho Eom ),박대식 ( Dae Sik Park ) 한국환경생물학회 2009 환경생물 : 환경생물학회지 Vol.27 No.2

본 연구는 PIT tag (passive integrated transponder)과 무선추적법(radio telemetry)을 오대산국립공원과 월악산국립공원에 서식하고 있는 파충류에 적용한 후, 이를 평가하여 효과적으로 국립공원 내 파충류 자원관리 방안을 모색하기 위하여 수행되었다. PIT tag은 현재까지 알려진 파충류 개체표시법 중에서 가장 효과적인 방법으로 2006년 3월부터 2008년 10월까지 오대산국립공원과 월악산국립공원의 조사지역에 출현한 모든 137마리의 뱀류를 대상으로 적용하였다. 무선추적 연구는 월악산국립공원에서 서식하고 있는 황구렁이(Elaphe schrenckii anomala) 2마리를 대상으로 2007년 9월부터 2008년 11월까지 실시하였다. 연구결과, 두 곳의 국립공원 지역에서 연구기간 동안 17마리가 재 포획되어 평균 12.40%의 재포획률을 보였으며, 재 포획된 개체들의 자료를 통하여 누룩뱀(Elaphe dione)과 쇠살모사(Gloydius ussuriensis) 성체의 SVL 증가를 성공적으로 확인하였다. 무선추적을 통하여 확인된 황구렁이 수컷의 행동권 면적은 MCP=389,600 m2, Kernel 95%=471,800 m2, 암컷은 MCP=162,500 m2, Kernel 95%=208,700 m2인 것으로 확인되었다. 국립공원 내에서 보호와 관리가 필요한 종 혹은 멸종위기대상 종인 파충류를 대상으로 PIT tag과 무선추적을 적용한다면 공원 내 파충류의 효율적인 관리 및 보존방안을 마련하는 데 중요한 기초자료를 제공할 수 있을 것으로 생각된다. To suggest effective ways of the management of reptiles in Korea national parks, we applied PIT (passive integrated transponder) tag and radio telemetry research methods in the monitoring of reptiles in Odaesan and Woraksan national parks. We implanted PIT tags into 137 snakes (six species) captured in both the national parks between March 2006 and October 2008 and also radio-tracked two Korean rat snakes (Elaphe schrenckii anomala) from September 2007 to November 2008 in the Woraksan national park. Of total 137 snakes which we had inserted the PIT tag, 17 snakes (12.40%) were recaptured. Based on the PIT tag data of the recapture, we successfully obtained the annual growth rate of Korean cat snakes (Elaphe dione) and Red-tongue pit-viper (Gloydius ussuriensis). Home range of the Korean rat snakes based on the data of radio-tracking was estimated as 389,600 m2 (MCP: Minimum convex polygon) and 471,800 m2 (Kernel 95%) for males and 162,500m2 and 208,700m2 for females. These results suggest that if we apply PIT tag and radio telemetry research methods to manage reptiles in Korea national parks, it could greatly increase our understanding about their basic ecology and as the result, it could allow us to develop better management and conservation ways of reptiles in Korea national parks.

3관능성 BPA-3MA를 기질로한 광중합형 치면열구전색재의 물성 연구

박경준,김경남,안광덕,김광만,한동근,전호욱 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.2

The BPA-3MA(bisphenol-A trimethacrylate) in which one of two hydroxy group was substituted by methacrylate was synthesized by reaction of Bis-GMA with methacryloyl chloride. To investigate the possibility to apply BPA-3MA as matrix of composite resin or pit and fissure sealant, BPA-3MA(3MA) or Bis-GMA(GMA) as matrix, TEGDMA as diluent, CQ as photosensitizer, EDMAB as photoinitiator and 5㎛ pyrogenic silica as filler were used for making experimental sealants. In addition, these experimental sealants were compared to a commercial Concise L/C White sealant(CLW, 3M Co, U.S.A.) for flexural strength, diametral tensile strength, amount of abrasion, surface hardness, water sorption and solubility, and degree of conversion. The flexural strength of CLW was the highest value but there was not significant difference with 3MA. Diametral tensile strength of all 3 groups were similar(p>0.05) and the amounts of abrasion of 3MA and GMA were less than that of CLW(p<0.05). The surface hardness of 3MA was higher than that of GMA(p<0.05) but similar to that of CLW. The water sorption of 3MA was less than that of GMA and CLW(p<0.05) and the solubilities of 3MA and CLW were than that of GMA(p<0.05). GMA and CLW were relatively polymerized well as compared to 3MA. From these results, pit and fissure sealant using trifunctional BPA-3MA as matrix had superior physical and mechanical properties to existing Bis-GMA sealant. Furthermore, it will be possible to develop composite resin having superior properties to existing composite resin.

광중합 구치부용 레진에서 광조사 후 이차 가열시 가열시간이 간접인장강도에 미치는 영향

박경준,김경남,황동환 大韓齒科器材學會 1993 대한치과재료학회지 Vol.20 No.1

The visible light-curing posterior composite materials are used extensively due to their esthetic characteristics. Many disadvantages of marginal leakage, wear and poor strength should be overcome through improvement of mechanical properties. It has been proved that most of materials could be improved by additional heat curing after light curing. The objectives of this study was to estimate the effects of additional heat curing on the five different commercial posterior light curing resins, P-50, Herculite XR, Heliomolar, Prisma AP. H, Clearfil Photoposterior. Additional heat(CRC system, Kuraray Co., Japan) of 100℃ was applied for 0, 5, 15 and 25 minutes after light curing with Visilux Ⅱ (3M Co., U.S.A.). The diametral tensile strength was measured by using UTM (Instron 6022, U.S.A.) of cross head speed of 1cm/min after storing in 37℃, 100% humidity for 10minutes and 24 hours. The following conclusions may be drawn from this study. 1) When heat was applied on tested specimens, diametral tensile strength was increased in proportion to period of heat applying in early stage. However, there were differences of diametral tensile strength in each tested materials. 2) The highest diametral tensile strength was shown after 5 and 15 minutes of heat application. 3) When it was compared between 24 hours and 10 minutes group, former showed higher values. Heat application after light curing on VLC posterior composite resins showed increase of diametral tensile strength on this study. Not only the temperature applied but period of heat application seemed affect the strength of this materials. The further investigation of proper temperature and period of heat application for each materials was recommended.

볼링후 발생한 전골간신경 증후군-증례 보고-

김혜경,이희숙,박준명,정광익,박동식 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.4

탄소섬유 적층혼성부재의 계면수 변화에 따른 축 압궤 특성

서현경,박준우,양용준,황우채,양인영 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.1

알루미늄과 CFRP는 대표적인 경량화 재료이다. 알루미늄 부재는 안정적인 소성 변형에 의해 에너지를 흡수하며, CFRP 부재는 비강성과 비강도가 우수하고 불안정한 취성파괴로 인해 에너지를 흡수한다. 이러한 각각 알루미늄과 CFRP 부재의 압궤 특성을 기초로 두 재 료의 결합에 의해 서로의 장점에 대한 시너지 효과를 얻기 위해 혼성구조부재를 제작하였다. 본 연구에서는 알루미늄 부재의 외측을 CFRP로 강화시킨 혼성구조부채를 제작하여 CFRP의 계면수 변화에 따른 축 방향 준정적 압궤실험을 행하여 사각 및 원형 단변 모형의 혼성구조부재의 압궤 특성을 조사하였다. 실험 결과 혼성구조부재는 내부의 알루미늄 부재의 연성 성질 때문에 CFRP 부재의 불안정한 취성 파괴를 보완하여 비교적 안정적인 압궤 모드를 보였다. 하지만 혼성구조부재는 계면수 변화에 대해 에너지 흡수성과 압궤 모드는 별다른 영향을 보이지 않았다. The aluminum or CFRP is representative of light-weight materials. The aluminum tubes absorb energy by stable plastic deformation and the CFRP tubes absorbs energy by unstable brittle failure with higher specific strength and stiffness. Based on the respective collapse characteristics of aluminum and CFRP tubes, the aluminum CFRP compound tubes were manufactured to get a synergy effect when the aluminum CFRP tubes were combined with the advantages of each tube. This paper is to investigate the collapse characteristics of square or circular shaped aluminum CFRP compound tubes subjected to quasi-static axial collapse tests which were conducted by changing the stacking conditions. Test results showed that the collapse of the aluminum CFRP compound tubes complemented unstable brittle failure of the CFRP tube due to the ductile characteristics of the inner aluminum tube. It turned out that interlaminar numbers of aluminum CFRP compound tubes have no influence on the energy absorption and collapse modes of the tubes.

[논문]병렬 유전 알고리즘을 이용한 발전기 기동정지계획

김형수,문경준,박준호 釜山大學校生産技術硏究所 2003 生産技術硏究所論文集 Vol.62 No.-

본 논문에서는 병렬 유전 알고리즘을 이용한 발전기 기동정지계획을 제안한다. 최소 기동 및 정지 시간 등과 같은 다양한 발전기의 제약조건을 만족시키면서 발전기 기동정지계획을 수립하는 문제는 비선형적이며 많은 국부해가 존재하므로 최적해를 탐색하는데 많은 시간이 소요된다. 이러한 문제점을 해결하기 위해 16개 의 프로세서를 가진 병렬 시스템과 이를 이용한 병렬 유전 알고리즘을 제안하였으며, 제안한 방법의 효용성을 검토하기위해 10기 및 26기의 전력계통에 적용하여 시율레이션을 시행하였다. 시율레이션 결과 기존의 방법에 비해 탐색속도를 개선하였고 우수한 해를 구할 수 있었다.

대식세포에서 산화질소 생성에 대한 當歸 에탄올 추출물의 억제효과

정미영,박히준,정지행,김진용,강전모,이나경,임사비나 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2007 東西醫學硏究所 論文集 Vol.2007 No.-

Objective : The Angelica gigas Nakai ethanol extract (AGE) was investigated to compare nitric oxide (NO) production and NF-kB activity from RAW 264.7 cells, since NO and nuclear factor-kB(NF-kB) have been shown to be factors implicated In inflammatory disease. Method : AGE was prepared by extracting medicinal herb with 70% (v/v) ethanol solution. We investigated production nitric oxide (NO) and inducible nitric oxide synthase (iNOS) gene expression by ARE in LPS-stimulated RAW 264.7 macrophage cells. We also investigated inhibition of LPS-induced activation of NF-kB on western blot. Result : LPS-induced RAW 264.7 cells increascd NO production and ,iNOS expression. Upon treatment with AGE, nitrite production was significantly inhibited in a concentration-dependent manner compared to the untreated control. AGE inhibited this LPS-induced ,iNOS mRNA and protein in a dose-dependent manner. AGE markedly inhibited the expression of iNOS mRNA and protein at a concentration of 100 μg/ml. LPS-induced RAW 264.7 cells with AGE blocked inhibitory factor-kBα degradation. Conclusion : This study shows that AGE seems to attenuate inflammation through inhibition of NO production and iNOS expression by blockade of NF-kB activation in LPS-stimulated RAW 264.7 cells.

동합금의 생물학적 친화성에 대한 연구

김경남,박경준,이서영 大韓齒科器材學會 1991 대한치과재료학회지 Vol.18 No.2

The rise in the cost of gold was lead to use base metal alloy instead of using gold alloy which was known to be most biocompatible. But these base metal alloys are too hard and have low biocompatibility compared to gold alloy. Especially, nickel allergy & hypersensitivity came to be a problem, so use of these alloys is needed to take a careful consideration. In addition, copper alloy has been used in dentistry until now because of giving a golden color but it has lower castability and higher solubility in the oral environment compared to gold alloy. Many reports also have been made on the high toxicity of copper alloy, which revealed the inadequate dental uses of copper alloy. Recently, NPG copper alloy (Alba Dent Co., U.S.A.) have been introduced in Korea. This study was done cell toxicity test (Agar overlay test) and tarnish test in artificial saliva for 30 days and in 5% Na₂S solution for 13 days for 3 gold alloys, a Ag-Pd alloy, and NPG copper alloy. The results were as followed; 1. NPG copper alloy indicated zone index 3 and lysis index 5 in agar overlay test, which revealed high toxicity compared to gold or silver alloys. 2. In tarnish test, contrast to a small color change of gold and silver alloys, NPG copper alloy had a striking color change, 1st day in artificial saliva indicated 2 degree, 30th day in artificial saliva indicated 4 degree and in 5% Na₂S solution, extreme color change of 5 degree showed even on the 1st day.

급성 관동맥증후군 환자의 신기능 이상과 주요 심장사건과의 관계

이상재,윤경호,최준호,송미진,김연경,박은미,김현정,이은미,유남진,김남호,오석규,정진원 圓光大學校 醫科學硏究所 2006 圓光醫科學 Vol.21 No.1

Filler의 양에 따른 치면열구전색재의 물리적 성질에 관한 연구

김경남,이서영,박경준 大韓齒科器材學會 1991 대한치과재료학회지 Vol.18 No.2

Pit and fissure sealants, widely used in preventive dentistry contains Bis-GMA, and due to least amount of filler or not at all, abrasion resistance, strength, and coefficiency of thermal expansion vary markedly with tooth structure in addition to high polymerization shrinkage. For those reasons, adding filler such as direct filling resin can improve some of the shortcoming mentioned above. However, addition of filler reduces fluidity, therefore resulting in less penetration into pits and fissures and reducing the value of pit and fissure sealants. Therefore, the author investigated an appropriate filler content which enhances the abrasion resistance and other properties while maintaining the flow of pit and fissure sealants, on increasing filler content of both base and catalyst by 0, 1, 2, 3, 4, and 5%(wt%) and of base only by 8.4wt% which is maximum addition in manufacturing processes. Penetration coefficiency, diametral tensile strength, abrasion resistance, water absorption, and solubility tests were tested. As a results, 1. Penetration coefficiency was inversely proportional to filler content. 2. Diametral tensile strength, water absorption, and solubility were not significantly affected by filler content. 3. Abrasion resistance was proportional to filler content. 4. By adding 8.4 wt% of filler to base only, the material with overall filler content of 4.2wt% displayed satisfactory abrasion resistance and fluidity.