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Han, Yeon-Hee,Lim, Seok-Tae,Yun, Kuk-No,Yim, Sung-Kyun,Kim, Dong-Wook,Jeong, Hwan-Jeong,Sohn, Myung-Hee The Korea Society of Nuclear Medicine 2012 핵의학 분자영상 Vol.46 No.2
Purpose : An elevated thyroid stimulating hormone level (TSH) is essential to stimulate the uptake of radioiodine into thyroid remnants andmetastases of thyroid cancer when a patient undergoes high-dose radioiodine therapy. Nowadays, recombinant human thyroid stimulating hormone (rh-TSH) is increasingly used instead of the classic method of thyroid hormone withdrawal (THW). However, beyond the therapeutic effects, clinical differences between the two methods have not yet been clearly demonstrated. The aim of this work was to investigate the effects of the two methods, especially on liver function. Methods : We identified 143 evaluable patientswho were further divided into two groups: THW and rh-TSH. We first reviewed the aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels, which were measured during the admission period for total thyroidectomy. We called these liver enzyme levels "base AST" and "base ALT." We also assessed other chemistry profiles, including AST, ALT, total cholesterol, LDL cholesterol, alkaline phosphatase (ALP), total bilirubin (TB), and triglyceride (TG), which were measured on admission day for high-dose radioiodine therapy. We called these liver enzyme levels "follow-up AST" and "follow-up ALT." We compared the changes in base and follow-up liver enzyme levels and the other chemistry profiles between the two groups. Results : The base AST and base ALT levels of the two groups were within normal range, and there was no significant difference between the two groups. In contrast to these base liver enzyme levels, follow-up liver enzyme levels between the two groups showed significant differences. Patients in the THW group had higher follow-up AST and ALT levels than did the rh-TSH group. Patients in the THW group also had higher levels of total cholesterol and LDL cholesterol than did the patients in the rh-TSH group. However there were no statistically significant differences in ALP, total bilirubin, and triglyceride levels between the two groups. Conclusions : In this retrospective analysis of liver function, the use of rh-TSH for high-dose radioiodine therapy had less of an effect on liver function and cholesterol levels than dose thyroid hormone withdrawal. This suggests that rh-TSH can be used effectively and safely especially for patients with metabolic syndrome.
Development of the Reaction-Bonded Si/SiC Ceramic Tubes for High-Temperature Heat Exchangers
Han, In Sub,Seo, Doo Won,Lee, Shi Woo,Hong, Ki Seok,Woo, Sang Kuk,Lee, Kee Sung Trans Tech Publications, Ltd. 2005 Key Engineering Materials Vol.287 No.-
<P>The Ministry of Commerce, Industry and Energy has contracted with the KIER including the ceramics company to localize of the ceramic heat exchanger tubes and its components. The basic objective of this paper is to develop a ceramic formulation and process which would yield a cost-effective and long-life Si/SiC tube materials by extrusion and reaction sintering process. Thus,KIER is currently developed and localized heat exchanger tubes with 40mm out diameter, 1500mm length. This paper was tested the mechanical and thermal properties of the localized Si/SiC tubes obtained from reaction sintering. Also, the effect of energy savings of the heat exchanger after exposure to forging furnace with hot corrosive environment was investigated.</P>
Chironomidae (Diptera) Fauna of Seoul-Gyeonggi Area in Korea
( Kuk Bon Na ),( Han Il Ree ),( Sang Woo Jung ),( Yeon Jae Bae ) 고려대학교 한국곤충연구소 2010 昆蟲硏究誌 Vol.26 No.-
The Chironomidae (Diptera) fauna of the Seoul-Gyeonggi area in Korea was investigated during 2003-2004. As a result, 41 species in 23 genera and 4 subfamilies including 19 new Korean records, as follows, were identified: Microtendipes tamaogouti Sasa, Microtendipes truncatus Kawai and Sasa, Paracladopelma tamahikawai Sasa, Polypedilum pedestre (Meigen), Stictochironomus sp., Micropsectra shouharasima Sasa, Neozavrelia bicoliocula (Tokunaga), Rheotanytarsus tamaquartus Sasa, Tanytarsus tamaoctavus Sasa, Tanytarsus sp., Euryhapsis subviridis (Siebert), Paratrichocladius rufiventris (Meigen), Conchapelopia quatuormaculata Fittkau, Conchapelopia sp.1, Conchapelopia sp.2, Rheopelopia maculipennis (Zetterstedt), Trissopelopia longimana (Staeger), Potthastia gaedii (Meigen), and Potthastia montium (Edward). List of species was provided with bibliographic sources and material data.
Effects of Forming Method on Mechanical Strength and Microstructure of SiC Candle Filters
Han, In-Sub,Seo, Doo-Won,Kim, Se-Young,Woo, Sang-Kuk,Kim, Young-Wook 한국암반공학회 2009 Geosystem engineering Vol.12 No.4
Porous SiC candle filter were fabricated by ramming and extrusion process. To fabricate SiC candle filter, commercially available $85\;{\mu}m$ $\alpha$-SiC powder and $44\;{\mu}m$ mullite powder were used as the starting materials. The materials were sintered at $1400^{\circ}C$ 2h in ambient pressure. The effect of forming methods on porosity, density, strength (flexural and compressive strength), and microstructure was investigated. The sintered SiC filter which was formed by ramming process has higher density and strength than extruded filter. Its maximum density and 3-point bending strength were ${\sim}2.00\;g/cm^3$ and 45 MPa, respectively.