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임정태,박수경,김미영,최원우,정우상,조기호,박성욱,고창남,이정섭,Leem, Jung-Tae,Park, Su-Jyung,Kim, Mi-Young,Choi, Won-Woo,Jung, Woo-Sang,Cho, Ki-Ho,Park, Sung-Wook,Ko, Chang-Nam,Lee, Jung-Sup 대한한방내과학회 2009 大韓韓方內科學會誌 Vol.30 No.4
Objectives : The aim of this study was to assess the relationship between metabolic syndrome and erythrocyte deform ability in acute stroke patients. Methods : Among 88 of the recruited patients, 52 were diagnosed as metabolic syndrome. We assessed their general characteristics, risk factors. We compared the assessed variables between metabolic syndrome and control group. We analyzed the relationship between metabolic syndrome and erythrocyte deform ability. We analyzed relationship between cardiovascular risk factors and erythrocyte deformability. Results : The general characteristics waist and hip circumference, waist/hip ratio were higher in metabolic syndrome group. The metabolic syndrome group was also diagnosed with hypertension, DM, and hyperlipidemia more often than the control group. The blood test metabolic syndrome group showed higher triglycerides, total lipids, fasting blood sugar, and 2 hours postprandial plasma glucose level and lower HDL-cholesterol than the control group. There were more patients diagnosed with Dampness-Phlegm in the metabolic syndrome group. There were more patients showing lower erythrocyte deform ability in the metabolic syndrome group. The plasma homocysteine level was negatively correlated with erythrocyte deform ability. Conclusion : The results reconfirmed that the risk factors are more in metabolic syndrome group. The results indicated that metabolic syndrome lead to a lower erythrocyte deform ability in small vessel disease stroke patients. The Plasma homocysteine level was negatively correlated with erythrocyte deform ability.
임정태,김현규,김철성,Sung Yong An,Kang Ryong Choi 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.12
The crystal and the magnetic properties of (Nd35.00−xDyx)Febal.Cu0.15Co1.50Al0.20Nb0.35B1.00 (wt.%; x = 3.50, 6.00, and 8.00) samples are investigated by using x-ray diffractometer (XRD), vibrating smple magnetometer (VSM), and M¨ossbauer spectrometer. The crystal structure is determined to be tetragonal with the P42/mnm space group. The saturation magnetization (Ms) decreases while the coercivity (Hc) increases with increasing Dy ion concentration. Based on the zero-filed-cooled (ZFC) curves, all the samples show spin reorientation, and the spin-reorientation temperature TSR decreases with increasing Dy ion concentration. The M¨ossbauer spectra measured at 295 K show decreasing < Hhf > with increasing Dy concentration, and the abrupt changes both in the magnetic hyperfine field (Hhf ) and the electric quadrupole shift (EQ) at temperatures around TSR.
Magnetic Properties of Iron-based Catalysts Activated by Various CO2 Concentrations
임정태,김철성,Dong Hyun Chun,박지찬 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.11
Fresh catalyst samples of 100Fe/5.26Cu/4.76K/18.2SiO2 in part per weight were synthesized byusing a combination of a co-precipitation technique and spray-drying method and were activated insitu by using syngas (H2/CO/xCO2) with different amounts of CO2 (x = 0.0, 0.5, 1.0, and 2.0). Allactivated catalyst samples showed similar XRD patterns, a combination of ferrihydrite, magnetite,-carbide, and "0-carbide, regardless of the CO2 contents. From the M¨ossbauer spectra, we alsoobserved a combination of ferrihydrite, magnetite, -carbide, and "0-carbide in all activated catalystsamples. The main compound of the activated catalyst sample activated by using CO2-free syngas(H2/CO) was magnetic -carbide, and the main compound changed from -carbide to ferrihydritewith increasing CO2 concentration, confirmed by both, M¨ossbauer spectra and XRD pattern.