http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jung‑Hun Lee,Min‑Su Park,Hong‑Seon Ahn,Kyung‑Won Park,Jun‑Seok Oh,Seung‑Gyu Jeon,Dong‑Kyu Kim,Jae‑Eon Kim 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4
When large scales DG are connected to the distribution system of unidirectional power currents, bi-directional power currents are formed, making it impossible to use conventional overcurrent protection methods alone to detect and isolate fault sections for ground and short-circuit faults. To solve these problems, this study proposed the method of protection against single-line-ground fault of common neutral line multi-contact local power distribution system using distance relay and directional relay. The proposed protection method was applied to the common neutral multi-ground distribution system to validate the protection against single-line-ground fault through the PSCAD/EMTDC software package and efectively detect and isolate only the zone of single-line-ground fault without malfunctions.
Jung, Hye Ri,Kim, Gee Yeong,Nguyen, Bich Phuong,Jin, Hye-Jin,Jo, William,Thu Nguyen, Trang Thi,Yoon, Seokhyun,Woo, Won Seok,Ahn, Chang Won,Cho, Shinuk,Kim, Ill Won American Chemical Society 2017 The Journal of Physical Chemistry Part C Vol.121 No.40
<P>Hybrid lead halide perovskite possesses attractive properties and outstanding performance. The electronic structure of hybrid lead halide perovskite single crystal can be used to comprehend its intrinsic properties. In this study, the crystal structure of CH3NH3PbBr3 perovskite crystal was elucidated by transmission electron microscopy. Phonon modes and CH3NH3+ rocking modes were analyzed. Band gaps of the crystal were obtained by temperature-dependent Raman scattering spectroscopy and photoluminescence measurement. Surface potential measurement for a (001) plane exhibited a work function of the material and other phases of PbBr2 and CH3NH3Br. From experimentally determined values, an electronic structure of CH3NH3PbBr3 was built. It showed a p-type characteristic.</P>
( Ahn Jung Oh ),( Min Hee Hong ),( Sung Sik Yoo ),( Eung Yo Lee ),( Ho Keun Won ),( In Joong Yoon ),( Joon Ki Jung ),( Hong Weon Lee ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.9
Haemophilus parasuis causes contagious porcine Glasser`s disease leading to severe losses in the swine industry. In this study, we established an efficient Escherichia colibased system for the expression of H. parasuis major outer-membrane protein (MOMP) that has been known as a good vaccine candidate against Glasser`s disease. Use of an E. coli-derived pelB leader sequence made it possible to produce recombinant MOMP (rMOMP) as the soluble forms without an additional refolding process. Using two different animal models, it was evaluated that the rMOMP was capable of inducing a significant immune response and providing protection against H. parasuis infection.
( Jung Yeon Park ),( Hyo Jeong Ahn ),( Ba Raem Yoo ),( Kyu Ri Hwang ),( Taek Sang Lee ),( Hye Won Jeon ),( Sun Min Kim ),( Byoung Jae Kim ) 대한산부인과학회 2018 Obstetrics & Gynecology Science Vol.61 No.2
Objective This study was conducted to determine the effectiveness and safety of medical treatment with sublingual misoprostol (MS) in the 1st trimester miscarriage under the approval by Health Insurance Review and Assessment Service (HIRA) for off-label usage by the single medical center in Korea. Methods A retrospective cohort study was performed in one institution between April 2013 and June 2016. Ninety-one patients diagnosed with miscarriage before 14 weeks of gestation and wanted to try medical treatment were included. A detailed ultrasound scan was performed to confirm the diagnosis. Patients took 600 microgram (mcg) of MS sublingually at initial dose, and repeated the same dose 4-6 hours apart. Successful medical abortion was defined as spontaneous expulsion of gestational products (including gestational sac, embryo, fetus, and placenta). If gestational products were not expelled, surgical evacuation was performed at least 24 hours later from the initial dose. Information about side effects was obtained by medical records. Results About two-thirds of patients had a successful outcome. The median interval time from pill to expulsion was 18 hours in the successful medical treatment group. There was no serious systemic side effect or massive vaginal bleeding. Presence or absence of vaginal spotting before diagnosis of miscarriage, uterine leiomyomas, subchorionic hematoma, or distorted shape of gestational sac on ultrasound scan were not statistically different between the two groups. Conclusion Medical treatment with sublingual MS can be a proper option for the 1st trimester miscarriage, especially for the patient who want to avoid surgical procedure. We can reduce the unnecessary sedation or surgical intervention in the patients with the 1st trimester miscarriage.
( Jung Hee Kim ),( Jin Kyu Rhee ),( Dae Gyun Ahn ),( Kwang Pyo Kim ),( Jong Won Oh ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.12
The hepatitis C virus (HCV) RNA genome is replicated by an RNA replicase complex (RC) consisting of cellular proteins and viral nonstructural (NS) proteins, including NS5B, an RNAdependent RNA polymerase (RdRp) and key enzyme for viral RNA genome replication. The HCV RC is known to be associated with an intracellular membrane structure, but the cellular components of the RC and their roles in the formation of the HCV RC have not been well characterized. In this study, we took a proteomic approach to identify stomatin, a member of the integral proteins of lipid rafts, as a cellular protein interacting with HCV NS5B. Coimmunoprecipitation and co-localization studies confirmed the interaction between stomatin and NS5B. We demonstrated that the subcellular fraction containing viral NS proteins and stomatin displays RdRp activity. Membrane flotation assays with the HCV genome replication-competent subcellular fraction revealed that the HCV RdRp and stomatin are associated with the lipid raft-like domain of membranous structures. Stomatin silencing by RNA interference led to the release of NS5B from the detergent-resistant membrane, thereby inhibiting HCV replication in both HCV subgenomic replicon-harboring cells and HCVinfected cells. Our results identify stomatin as a cellular protein that plays a role in the formation of an enzymatically active HCV RC on a detergent-resistant membrane structure.
Jung, Kyung-Won,Choi, Brian Hyun,Dao, Chau Minh,Lee, Young Jae,Choi, Jae-Woo,Ahn, Kyu-Hong,Lee, Sang-Hyup Elsevier 2018 Journal of industrial and engineering chemistry Vol.59 No.-
<P><B>Abstract</B></P> <P>High quantities of synthetic dyes are prevalent in wastewater, which are disposed into the environment without proper treatment. In this work, two types of aluminum based metal-organic frameworks, Al-FA (fumaric acid) and Al-SA (succinic acid), were synthesized using water as the solvent and employed for the adsorption of mono and di-azo dyes. Al-SA exhibited superior affinities towards both substrates compared to those of Al-FA, with maximum adsorption capacities of 559.28 and 332.48mg/g for mono and di-azo dyes, respectively. Overall findings insinuate that Al-SA can be considered as a promising candidate for efficient azo dye removing agent.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Aluminum based metal-organic frameworks were synthesized using water as the solvent. </LI> <LI> Aluminum-fumaric acid (Al-FA) and aluminum-succinic acid (Al-SA) were synthesized. </LI> <LI> Al-SA showed superior removal capability than that of Al-FA for mono and di-azo dyes. </LI> <LI> The adsorption performance obeyed the pseudo-second-order and the Sips models. </LI> <LI> Al-SA exhibits excellent adsorption capacity for employed substrates. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Aluminum-succinic acid MOFs can serve as a potent candidate for a universally applicable adsorbent in anionic azo dyes treatment.</P> <P>[DISPLAY OMISSION]</P>
Jung-Man Namgoong,Shin Hwang,Chul-Soo Ahn,Kyoung-Mo Kim,Seok-Hee Oh,Dae-Yeon Kim,Tae-Yong Ha,Gi-Won Song,Dong-Hwan Jung,Gil-Chun Park 한국간담췌외과학회 2020 Annals of hepato-biliary-pancreatic surgery Vol.24 No.4
Backgrounds/Aims: Infant-to-infant whole liver transplantation (I2I-WLT) has been rarely performed in Korea. We analyze clinical sequences of our 7 cases of I2I-WLT and present evolution of surgical techniques to prevent PV stenosis. Methods: A total of 7 cases of I2I-WLT were performed at our institution during last 13 years, which represented 0.1% of our LT volume. Patient perioperative profiles and clinical sequences were analyzed with focusing on portal vein (PV) complications. Results: Donor ages were 6-17 months and graft weights were 140-525 g. Recipient ages were 7-16 months and body weights were 6-10.1 kg and Primary diagnoses were biliary atresia in 6 and progressive familial intrahepatic cholestasis in 1. The first case underwent PV stenting 2 months after I2I-WLT, and underwent retransplantation 6 years later. The second case underwent intraoperative PV stenting, but died 32 days later. The third case underwent repeated PV dilatation. The fourth, fifth and seventh cases experienced no surgical complications, and PV reconstruction was performed using a side-to-side unification venoplasty technique. The sixth case had poor development of the PV system, so customized PV venoplasty was performed, but PV occlusion requiring PV stenting occurred. Early retransplantation was performed, but scanty PV flow was detected despite no obvious PV stenosis, resulting in graft failure. Serious PV complications developed in 4, but none experienced after adoption of side-to-side unification venoplasty. Conclusions: As PV size in infant donors and recipients is very small, PV reconstruction in I2I-WLT requires specialized surgical techniques of side-to-side unification venoplasty.
Jung, Kyung-Won,Jeong, Tae-Un,Choi, Jae-Woo,Ahn, Kyu-Hong,Lee, Sang-Hyup Elsevier 2017 Bioresource technology Vol.244 No.1
<P><B>Abstract</B></P> <P>Batch and continuous fixed-bed column studies were investigated using electrochemically modified biochar calcium-alginate beads (EMB-CABs) as an adsorbent for the removal of phosphate from aqueous solutions. Batch experiments revealed that the phosphate adsorption behavior of EMB-CABs and its structural characteristics were highly dependent on pH condition. Also, kinetics and equilibrium isotherms studies demonstrated that the experimental data correlated well with the pseudo-second-order and Sips isotherm models, respectively. The effects of different operating parameters such as bed height, initial phosphate concentration, and flow rate were investigated in a continuous fixed-bed column, and the experimental data were fitted to three different breakthrough models, the Adams-Bohart, Thomas, and Yoon-Nelson models. The results suggested that the Yoon-Nelson model showed better agreement with the breakthrough curves than other models. Lastly, the design parameters for a large-scale column were calculated via the scale-up approach using the breakthrough parameters obtained from lab-scale column tests.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Adsorptive removal of phosphate from water in batch and column modes was studied. </LI> <LI> Electrochemically modified biochars has been converted into calcium-alginate beads. </LI> <LI> Batch results indicate the endothermic and chemisorption process. </LI> <LI> Column capacity was dependent on bed height, initial concentration, and flow rate. </LI> <LI> The entire breakthrough curves were best predicted by the Yoon-Nelson model. </LI> </UL> </P>