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박학수,권미혜 국립중앙박물관 2017 박물관보존과학 Vol.18 No.-
숭실대학교 한국기독교박물관이 소장한 자명종을 특별전 전시를 위해 보존처리 하였다. 보존처리를 위해 성분 분석을 하였으며 그 결과 본체는 황동에 아말감도금법으로 금을 도금하였고, 문자판은 순 구리에 법랑을 씌운 것을 확인하였다. 그리고 시계 바늘의 재질은 철이었다. 이물질 제거를 통해 문자판의 테이프 자국 등을 없앴으며, 안정화를 위해 보호 코팅을 하였다. 원래의 형상에 가깝게 복원하기 위해 황동으로 부품을 제작하여 시계 바늘과 문자판을 연결하고, 아크릴 지지대를 만들어 문자판을 본체에 접합하였다. 재질 분석과 보존처리를 통하여 안정한 상태로 전시와 연구에 활용할 수 있도록 하였다. The Bracket clock in the collection of the Korean Christian Museum at Soongsil University underwent conservation treatment for a special exhibition. The compositional analysis showed that the body was made of brass plated with gold by fire-gilding(gold amalgam process), while the dial was identified as pure copper coated with enamel. The hands were made of steel. Remnants of adhesive tape on the dial were cleaned, followed by the addition of a protective coating. In order to restore it to a condition as similar to its original form as possible, replacements for missing parts were newly constructed out of brass and were connected to the hands and the dial. The dial was then fixed to the body using an acrylic support. The compositional analysis and conservation treatment have left the clock in stable condition and readily available for exhibitions and future studies.
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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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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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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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박학수 국립중앙박물관 2014 미술자료 Vol.- No.86
The Gilt-bronze Standing Buddha with Inscription of ‘Yeonga Chilnyeon’is the oldest Buddhist sculpture with an inscribed date that has ever been found in Korea. The inscription of ‘seventh Yeonga year’places the date of production in the Goguryeo era, circa 539 CE. Conservation treatment was carried out to reinforce the weak halo that had cracks and to replace fixing clips with new a Ti one. Information which can be used to estimate making technology of the Buddha has been acquired by using optical microscopy and radiography during the conservation treatment. The lines of the head were carved after forming the Buddha’s shape with pattern material like beeswax. The inner area of the inscription and flame design of halo the have engraving marks, they were engraved after casting. There is an area inside the pedestal where have marks of cutting with a chisel like tools are present. The area is estimated to be the region of the gates through which molten metal was injected. Radiographs revealed an internal cavity which ranges from the neck to the abdominal region. The shape of the cavity shows that molten metal in the mould was solidified in an upright position. The position of the gates and the shape of the internal cavity suggest that the Buddha was cast with a bottom-gated system.
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