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Byun, Jae Soon,Han, Young Sun,Lee, Sang Sun Hogrefe Publishing Group 2010 International journal for vitamin and nutrition re Vol.80 No.2
<P> Soy isoflavones have been reported to decrease the risk of atherosclerosis in postmenopausal women. However, the effects of dietary consumption of soybean have not been explored. In this study, we evaluated the effects of consuming yellow soybeans, black soybeans (Glycine max), or sword beans (Canavalia gladiate) on lipid and oxidative stress levels in an ovariectomized rat model. Forty-seven nine-week-old female rats were ovariectomized, randomly divided into four groups, and fed one of the following diets for 10 weeks: a diet supplemented with casein (NC, n = 12), a diet supplemented with yellow soybean (YS, n = 12), a diet supplemented with black soybean (BS, n = 12), or a diet supplemented with sword bean (SB, n = 11). Plasma triglyceride (TG) levels in the BS and SB groups were significantly lower than that in the NC group. Notably, the BS group had significantly lower plasma total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) levels than the other groups. Hepatic total lipid levels were significantly lower in the YS and SB groups, and cholesterol levels were significantly lower in the SB group than in the NC group. Superoxide dismutase (SOD) and catalase (CAT) activities were significantly higher in the groups fed beans compared to the NC group. Hepatic thiobarbituric acid reactive substances (TBARS) levels were also significantly lower in the BS and SB groups than the NC group. In conclusion, our results suggest that consumption of various types of beans may inhibit oxidative stress in postmenopausal women by increasing antioxidant activity and improving lipid profiles. Notably, intake of black soybean resulted in the greatest improvement in risk factors associated with cardiovascular disease. </P>
( Sang Jun Suh ),( Hyung Joon Yim ),( Young-sun Lee ),( Han Ah Lee ),( Tae Hyung Kim ),( Sun Young Yim ),( Young Kul Jung ),( Ji Hoon Kim ),( Yeon Seok Seo ),( Jong Eun Yeon ),( Kwan Soo Byun ),( Soon 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: Various models for the prediction of hepatocellular carcinoma (HCC) in the patients with chronic hepatitis B (CHB) were suggested. The aim of study is to identify if the HCC risk scores are improved as antiviral therapy is prolonged in the patients with CHB-related liver cirrhosis. Methods: The patients with CHB who received entecavir (ETV) or tenofovir (TDF) were investigated retrospectively. Patients with liver cirrhosis patients diagnosed by sonography, CT or biopsy were enrolled. We calculated the HCC risk scores at pre-antiviral therapy, and each year from year 1 to 5 of post-antiviral therapy. The models were GAG-HCC, CU-HCC, REACH-B, modified REACH-B (mREACH-B), LSM-HCC, and PAGE-B. The primary endpoint was decrease of the risk scores after antiviral therapy. The secondary endpoint was finding the best model by AUROC after antiviral therapy. Results: A total of 362 patients were enrolled, and 198 and 164 patients were treated by ETV and TDF respectively. Child- Pugh scores were 5.7±1.3 and MELD were 9.9±3.8. Fifty six patient (15.5 %) occurred HCC at median 1.6 years (0.1-9.7 years). Most HCC scores (GAG, CU-HCC, REACH-B) decreased at year 1 and plateaued from year 1 to 5. mREACH-B and LSM-HCC scores decreased until year 2 and plateaued after year 2. PAGE-B showed no decrease from pre to post-antiviral therapy. The AUROC of PAGE-B was largest at baseline (GAG-HCC 0.472, CU-HCC 0.753, REACH-B 0.633, mREACH-B 0.688, LSM-HCC 0.649, and PAGE-B 0.760). After antiviral therapy, the AUROC changed. AUROCs of models employing HBV DNA levels increased (GAG-HCC, REACH-B, and LSM-HCC), that of liver stiffness based models (mREACH-B and PAGE-B) were persistent, and that of models employing hepatic function (CU-HCC) decreased (GAG-HCC 0.582, CU-HCC 0.686, REACH-B 0.689, mREACH-B 0.689, LSM-HCC 0.716, and PAGE-B 0.755 at 1year). The decrease of scores from baseline to each years were not different between ETV and TDF (all P>0.05). AUROC were largest in PAGE-B, however the scores were not changed after antiviral therapy. Second largest AUROC is that of LSM-HCC at year 1 and its AUROC became larger after antiviral therapy Conclusions: In conclusion, HCC prediction models such as PAGE-B and LSM-based models worked well in patients with HBV-related cirrhosis and decrease of the scores was associated with effects of the antiviral therapy.
Perforator Based Tibialis Anterior Segmental Muscle Island Flap in Lower Extremity Reconstruction
Byun, Il Hwan,Kwon, Soon Sung,Chung, Seum,Baek, Woo Yeol The Korean Society for Microsurgery 2016 Archives of reconstructive microsurgery Vol.25 No.2
Reconstruction of the lower extremities is difficult due to a lack of skin laxity and muscular tissues. Here, we present a case of lower extremity reconstruction via the anterior tibial artery perforator based segmental muscle island flap. Our patient was a 75-year-old male with a chronic ulcerative wound on the right lower leg from an old car accident. A $5.0{\times}0.5cm$ size ulcerative wound with tibial bone exposure was noted. We planned to reconstruct the lower extremity defect with a free flap, but the vessel status was severely compromised intraoperatively. Thus, we found the anterior tibial artery perforator using Doppler ultrasound, elevated the tibialis anterior muscle segment flap, and transposed it to cover the defect successfully. The flap presented with a nice contour and the skin graft covering the flap survived completely. There were no complications of the surgical site at three months follow-up and no gait morbidity. This is a meaningful case applying the concept of segmental muscle flap based on a perforator that had advantages including proper bulkiness, vascularization, and preservation of function, which were well applied, leading to great success.
Sang-Eon Kim,Soon-Do Yoon,Ki-Pung Yoo,Hun-Soo Byun 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.1
Experimental cloud-point data of binary and ternary mixtures for poly(isodecyl methacrylate) [P(IDMA)] in supercritical carbon dioxide, dimethyl ether (DME), propane, propylene, butane and 1-butene have been studied experimentally using a high pressure variable volume view cell. These systems show the phase behavior at temperature of 308 K to 473 K and pressure up to 255MPa. The cloud-point curves for the P(IDMA)+CO2+isodecyl methacrylate (IDMA) are measured in changes of the pressure-temperature (P-T) slope, and with cosolvent concentrations of 0-60.1 wt%. Also, experimental data of phase behaviors for IDMA in supercritical carbon dioxide is obtained at temperature range of 313.2-393.2 K and pressure range of 5.8-22.03 MPa. The experimental results were modeled with the Peng-Robinson equation of state. The location of the P(IDMA)+CO2 cloud-point curve shifts to lower temperatures and pressures when DME is added to P(IDMA)+CO2 solution. The P(IDMA)+C4 hydrocarbons cloud-point curves are ca. 16.0 MPa lower pressures than the P(IDMA)+C3 hydrocarbons curves at constant temperature.
Nondestructive Readout Operation of Oxide-Thin-Film-Transistor-Based 2T-Type Nonvolatile Memory Cell
Sung-Min Yoon,Chun-Won Byun,Shinhyuk Yang,Sang-Hee Ko Park,Doo-Hee Cho,Soon-Won Jung,Seung-Youl Kang,Chi-Sun Hwang IEEE 2010 IEEE electron device letters Vol.31 No.2
<P>A two-transistor-type nonvolatile memory cell composed of one-access and one-memory thin-film transistors (TFTs) was demonstrated. ZnO and poly(vinylidene fluoride-trifluoroethylene) were employed as semiconducting channels for both TFTs and ferroelectric-gate insulator for memory TFT, respectively, in which the cell structures and fabrication procedures were so carefully designed and optimized as to effectively incorporate both TFTs on the same glass substrate without any critical process damage even below 200°C. The fabricated memory cell successfully showed the write and nondestructive readout operations.</P>
Byun Jae-Won,Kim Kyoung-Ho,Lee Sung-Mo,Hwang Hyun-Soon,Kim Yong-Hee The Korean Society of Veterinary Service 2005 韓國家畜衛生學會誌 Vol.28 No.4
Ten isolates of Verotoxin-producing Escherichia coli (VTEC) were detected in slaughtered cattle and investigated their phenotypic characteristics and antimicrobial susceptibility. None of the isolates was positive for eae gene. Only one isolate was positive for uidA gene. Eight out of ten isolates of VTEC were originated from broker's cattle. Thus microbiological monitoring for broker farms should be performed to minimize VTEC contamination. In the antimicrobial susceptibility test, all the isolates were highly resistant to bacitracin and lincomycin whilst they are susceptible to apramycin and neomycin.
Oxide Semiconductor-Based Organic/Inorganic Hybrid Dual-Gate Nonvolatile Memory Thin-Film Transistor
Sung-Min Yoon,Shinhyuk Yang,Min-Ki Ryu,Chun-Won Byun,Soon-Won Jung,Sang-Hee Ko Park,Chi-Sun Hwang,Kyoung-Ik Cho IEEE 2011 IEEE transactions on electron devices Vol.58 No.7
<P>An organic/inorganic hybrid dual-gate (DG) nonvolatile memory thin-film transistor (M-TFT) was proposed as a device with high potential for implementing large-area electronics on flexible and/or transparent substrates. The active channel and bottom and top gate insulators (GIs) of the M-TFT were composed of In-Ga-Zn-O, Al<SUB>2</SUB>O<SUB>3</SUB>, and poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)], respectively. It was confirmed that the fabricated DG M-TFT showed excellent device characteristics, in which the obtained field-effect mobility, subthreshold swing, and on/off ratio were approximately 32.1 cm<SUP>2</SUP> V<SUP>-1</SUP> s<SUP>-1</SUP>, 0.13 V/dec, and 10<SUP>8</SUP>, respectively. It was also successfully demonstrated that the DG configuration for the proposed M-TFT could effectively work for improving the device controllability by individually controlling the bias conditions of the top gate and bottom gate (BG). The turn-on voltage could be dynamically modulated and controlled when an appropriate fixed negative voltage was applied to the BG. The required duration of the programming pulse to obtain a memory margin of more than 10 could be reduced to 100 μs. These results correspond to the first demonstration of a hybrid-type DG M-TFT using a ferroelectric copolymer GI/oxide semiconducting active channel structure and demonstrate the feasibility of a promising memory device embeddable in a large-area electronic system.</P>