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Kim, Tae Ho,Chun, Ki Hong,Kim, Hae Jin,Han, Seung Jin,Kim, Dae Jung,Kwak, Jiyeong,Kim, Young Seol,Woo, Jeong Taek,Park, Yongsoo,Nam, Moonsuk,Baik, Sei Hyun,Ahn, Kyu Jeung,Lee, Kwan Woo The Korean Academy of Medical Sciences 2012 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.27 No.8
<P>We analyzed the direct medical costs for Korean patients with type 2 diabetes according to the type of complications and the number of microvascular complications. We analyzed costs for type 2 diabetes and associated complications in 3,125 patients. These data were obtained from the Korean National Diabetes Program (KNDP), a large, ongoing, prospective cohort study that began in 2005. The cost data were prospectively collected, using an electronic database, for the KNDP cohort at six hospitals. The costs were analyzed according to complications for 1 yr from enrollment in the study. Among 3,125 patients, 918 patients had no vascular complications; 1,883 had microvascular complications only; 51 had macrovascular complications only; and 273 had both complications. The annual direct medical costs for a patient with only macrovascular, only microvascular, or both macrovascular and microvascular complications were 2.7, 1.5, and 2.0 times higher than the medical costs of patients without complications. Annual direct medical costs per patient increased with the number of microvascular complications in patients without macrovascular complications. The economic costs for type 2 diabetes are attributable largely to the management of microvascular and macrovascular complications. Proper management of diabetes and prevention of related complications are important for reducing medical costs.</P>
Kim, Jin Ho,Jung, Jae Mok,Kwak, Jun Young,Hwang, Tai Kyung,Ganapathy, Hullathy Subban,Jeong, Yeon Tae,Lim, Kwon Taek American Scientific Publishers 2011 Journal of Nanoscience and Nanotechnology Vol.11 No.1
<P>A new method for preparing flexible, transparent, and conductive multiwalled carbon nanotube (MWCNT) hybrid films with scratch resistance through a facile UV-curing method is described herein. UV-curable urethane oligomers were used as the binder between the MWCNTs and the plastic substrates. The transparency and sheet resistance of MWCNT thin films can be easily tailored by controlling the number of bar coaters. Composite films with different binder ratios were prepared to evaluate and optimize the surface abrasion resistance and adhesion parameter. Two types of MWCNT films, those with a 56% (with a 586 komega/sq sheet resistance) and a 78% transmittance (with a 22 Momega/sq sheet resistance) were obtained using the UV-curable resin, and the conductive films showed distinguished abrasion resistance and good adhesion.</P>
임상연구 : 대장 절제술에서 수술 중 N-acetyl-cysteine의 투여가 수술 후 회복 시간에 미치는 영향
하인호 ( In Ho Ha ),곽경화 ( Kyung Hwa Kwak ),한창규 ( Chang Gyu Han ),이인택 ( In Taek Lee ),최규석 ( Gyu Seog Choi ),김인겸 ( In Kyeom Kim ),백운이 ( Woon Yi Baek ),임동건 ( Dong Gun Lim ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.4
Background: The gut is an important area for inflammatory responses. Gut manipulation during open laparotomy compared with laparoscopic surgery, increases the inflammatory responses. Laparoscopic assisted colectomy (LC) with less bowel manipulation might minimize the inflammatory responses and oxidative stress, and offer a faster postanesthetic recovery than an open colectomy (OC). This study evaluated the effect of N-acetyl-cysteine (NAC), an antioxidant, on the recovery after colectomy. Methods: 116 colorectal tumor patients were reviewed retrospectively. The patients were divided into 3 groups; LC by surgeon A (A-L), OC by surgeon A (A-O) and OC by surgeon B (B-O). The postanesthetic recovery scores (PARS) were compared. In the prospective randomized controlled trial, the colorectal tumor patients were assigned to one of four groups; laparoscopic assisted colectomy (L - N) with NAC infusion (L + N), open colectomy (O-N) with NAC infusion (O + N). In the NAC groups, NAC (5 mg/kg/h) was infused after intubation to extubation. The PARS were compared. Results: In the retrospective study, the time to reach 10 points, which satisfies the discharge criteria in the PACU, was significantly lower in the A-L group than in the other groups. In the prospective study, the time to 10 points was shorter in the O + N group than in the O-N group. NAC offered no added benefits to the L + N and L-N groups. Conclusions: NAC offered faster recovery in the OC group but not in the LC group. (Korean J Anesthesiol 2006; 51: 436~42)
Kim, Jin Ho,Jung, Jae Mok,Kwak, Jun Young,Hong, Seung-Soo,Gal, Yeong-Soon,Lim, Kwon Taek American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.5
<P>Graphene oxide films were prepared by a facile ball milling process. The milling time and the amount of the acryl type polymer dispersion agent were controlled to obtain well dispersed graphene oxide solution in ethanol. Consequently, the transparent and conducting graphene oxide film which had 69% transmittance and 1.5 x 10(6) ohm/sq surface resistance was produced by bar coating the solution on a PET substrate. The electrical property of the graphene oxide film could be further improved to 2.1 x 10(5) ohm/sq by hydrazine vapor reduction.</P>
다중기포 소노루미네센스를 이용한 β<SUB>bc</SUB> 형 수산화니켈의 제조
변기택(Ki-Taek Byun),서국원(Kook Won Seo),심일운(Il-Wun Shim),곽호영(Ho-Young Kwak) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
Nanosized nickel hydroxide powder for alkine batteries was synthesized in aqueous or nonaqueous solution of nickel chloride with NaOH under ultrasound radiation at the multibubble sonoluminescence (MBSL) condition. Characterization by X-ray diffraction, transmission electron microscopy, FT-IR spectroscopy, as well as elemental analysis indicates the formation of β<SUB>bc</SUB>-type nickel hydroxide. The β<SUB>bc</SUB>-type nickel hydroxide synthesized in aqueous solution of NiCl₂ is slightly different that formed in nonaqueous solution of NiCl₂. The synthetic process of β<SUB>bc</SUB>-type nickel hydroxide at the MBSL condition was completed within 5 minutes. Coating of nickel hydroxide particles on various oxide particles such as Al₂O₃ and SiO₂ was also prepared at the MBSL condition.