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박학수,백승진,이은영 대한마취통증의학회 2016 Korean Journal of Anesthesiology Vol.69 No.4
Metastatic spinal tumors are usually quite difficult to treat. In patients with metastatic spinal tumors, conventional radiotherapy fails to relieve pain in 20–30% of cases and open surgery often causes considerable trauma and complications, which delays treatment of the primary disease. Percutaneous vertebroplasty (PVP) is considered to be useful in achieving rapid pain control and preventing further vertebral collapse due to spinal metastasis. However, symptoms of intraspinal neural compression can be contraindications to PVP. To overcome this problem, we performed PVP following targeted bipolar radiofrequency decompression, and examined the effect of the combined treatment in relieving severe radicular pain related to spinal cord compression caused by malignant metastatic tumors.
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황룡사 구층목탑지 사리공 출토 금동팔각사리소탑의 보존처리
박학수 국립중앙박물관 2003 박물관보존과학 Vol.4 No.-
황룡사지 9층목탑지 사리공 출토 금동팔각사리소탑의 보존처리를 실시하였다. X-선 조사를 통해 옥개에 방사상으로 문양이 존재하고 있음이 새롭게 밝혀졌다. 도금층은 아말감도금에 의해 이루어졌으며, 하나로 조성되기 전에 각각을 먼저 도금하였다. 결실부위를 복원하고 받침대와 지지대를 만들어서 기단부, 상판, 탑신, 옥개의 순으로 조립하였다. We performed conservation treatment for the sarira reliquary from the pagoda of Hwangnyong-sa temple site. The sarira reliquary is in the shape of gilt-bronze octagonal miniature pagoda. Through radiography, it was newly proved that a radial design exists on the roof part. The gilded layer was plated with amalgam. Each part was plated first before being put together. We restored the lost parts and made supports, and then assembled it in the following order: base, upper part of the base, shaft and roof part.
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박학수,최희윤,김우현,권혁남 국립중앙박물관 2004 박물관보존과학 Vol.5 No.-
일제시대에 발굴되어 여러 편으로 분리되어 있던 철제용기를 보존처리하였다. 보존처리를 통하여 유물을 안정화시키고, 본래의 형상을 복원하였다. 보존처리 결과 철제용기는 굽이 있으며 구연부에 턱이 있고 안으로 오므라드는 유선형이었다. X-선 투과검사 결과 주조과정에서 기공이 많이 발생한 것이 관찰되었으며, 금속조직을 통해 재질이 초정흑연을 가진 과공정 백주철임을 알 수 있었다. The metal vessel which was excavated during the Japanese rule and separated into many pieces was conserved. The relic was stabilized through conservation treatment, and its original shape was restored. After the conservation treatment, it was discovered that the metal vessel has the bottom part and a catch near the mouth and was made in a streamline shape which becomes narrower inward. Radiographic examination test revealed many pores which were produced during the process of casting. It was found through the analysis of the metal structure that the material used was hypereutectic white cast iron with primary graphites.
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박학수,황성주,박정숙 충남대학교 약학대학 의약품개발연구소 2007 藥學論文集 Vol.22 No.-
Nanotechnology, a multidisciplinary scientific undertaking, involves creation and utilization of materials, devices or systems on the nanometer scale. The field of nanotechnology is currently undergoing explosive development on many fronts. The technology is expected to create innovations and play a critical role in various biomedical applications, not only in drug delivery, but also in molecular imaging, biomarkers and biosensors. Target-specific drug therapy and methods for early diagnosis of pathologies are the priority research areas where nanotechnology would play a vital role. This review considers different nano-technology-based drug delivery and imaging approaches, and their economic impact on pharmaceutical and biomedical industries.
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박학수 국립중앙박물관 2012 박물관보존과학 Vol.13 No.-
국립중앙박물관이 소장하고 있는 보물 제1359호 감은사지 동삼층석탑 사리장엄구 중 금동전각형사리기의 귀꽃이 2010년 11월에 분리된 것을 계기로, 금동사리기외함을 포함하여 2점의 재보존 처리를 2011년 3월부터 10월까지 수행하였다. 보존처리는 과도한 광택과 기포를 가진 코팅부위를 제거하고 인크랄락(Incralac)으로 재코팅 하는 과정과, 균열 부위와 분리된 귀꽃을 재접합 후 직조 유리 섬유로 보강하는 순서로 진행하였다. 코팅과 접착제 부위가 가진 광택과 기포를 제거할 수 없는 부위는 소광(消光) 처리와 채색을 통해 광택과 기포가 눈에 적게 띄도록 하였다. The flower type ornament of the gilt bronze palace-type sarira reliquary among those sarira reliquaries of the East Pagoda at the Gameunssa Temple Site, which is the Treasure No. 1359 owned by the National Museum of Korea, was separated from the sarira reliquary in November 2010, thus conducting conservation treatments to be done on two items including the gilt bronze palace-type sarira reliquary during the period of March-October 2011. Those conservation treatments were carried out by following the process of removing the coated areas having excessive gross and bubbles, re-coating with Incralac, and then strengthening both the cracked areas and the separated flower-type ornaments with woven glass fiber after rejoining. For those areas where removal of gloss and bubbles at the coating and adhesive areas was not possible, the gloss and bubbles were made less perceivable through matting treatment and coloring.
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Early Movable Metal Types Produced by Lost-Wax Casting
박학수,윤의박 대한금속·재료학회 2009 METALS AND MATERIALS International Vol.15 No.1
The oldest extant movable metal print book is Buljojikjisimcheyojeol (Jikji) [1-9], printed in Korea in 1377. The prevailing assertion has been that the movable metal type used in its printing was made through lostwax casting [3-6]. Unfortunately, however, there is no record of movable metal type being made from lostwax casting, and to this day no relics have been found supporting this claim. We report that the first known movable metal types having the features of lost-wax casting are found in the Wibuinja, the movable metal type of the Joseon Dynasty Period that is preserved by the National Museum of Korea. The tapered shape of the body of the movable type and the unevenness of the stripe before casting defects broke out both suggest use of the lost-wax casting method. Although our findings do not conclusively prove that the movable metal type used for Jikji was made through lost-wax casting, the possibility of its production from lostwax casting cannot be excluded because movable metal types made from lost-wax casting exist. The oldest extant movable metal print book is Buljojikjisimcheyojeol (Jikji) [1-9], printed in Korea in 1377. The prevailing assertion has been that the movable metal type used in its printing was made through lostwax casting [3-6]. Unfortunately, however, there is no record of movable metal type being made from lostwax casting, and to this day no relics have been found supporting this claim. We report that the first known movable metal types having the features of lost-wax casting are found in the Wibuinja, the movable metal type of the Joseon Dynasty Period that is preserved by the National Museum of Korea. The tapered shape of the body of the movable type and the unevenness of the stripe before casting defects broke out both suggest use of the lost-wax casting method. Although our findings do not conclusively prove that the movable metal type used for Jikji was made through lost-wax casting, the possibility of its production from lostwax casting cannot be excluded because movable metal types made from lost-wax casting exist.
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