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쌍태아에서 제 1태아의 분만 후 제 2태아의 지연분만 : 중례보고
김주환,서민정,유희정,노권일,조대현,박정규,이정헌,조성남,손영수 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.3
With the widespread use of fertility medications and techniques of in vitro fertilization, multiple gestation has become epidemic in modern obstetric practice. Delivery of the initial fetus in a multiple gestation usually is followed by delivery of the subsequent fetus or fetuses shortly thereafter. However in rare circumstances, the delivery is delayed for days due to disappearance of uterine contraction after delivery of the first fetus. When uterine activity ceases after the delivery of the first neonate, a policy of nonintervention may be considered in case of an immature or very premature delivery, in order to achieve a gestational age for the remaining fetus(es) more compatible with neonatal survival. We report a case of twin gestation with prolongation of the delivery interval between the twins for 46 days.
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Novel nuclear localization signal regulated by ambient tonicity in vertebrates.
Kwon, Min Seong,Lee, Sang Do,Kim, Jeong-Ah,Colla, Emanuela,Choi, Yu Jeong,Suh, Pann-Ghil,Kwon, H Moo American Society for Biochemistry and Molecular Bi 2008 The Journal of biological chemistry Vol.283 No.33
<P>TonEBP is a Rel domain-containing transcription factor implicated in adaptive immunity, viral replication, and cancer. In the mammalian kidney, TonEBP is a central regulator of water homeostasis. Animals deficient in TonEBP suffer from life-threatening dehydration due to renal water loss. Ambient tonicity (effective osmolality) is the prominent signal for TonEBP in a bidirectional manner; TonEBP activity decreases in hypotonicity, whereas it increases in hypertonicity. Here we found that TonEBP displayed nuclear export in response to hypotonicity and nuclear import in response to hypertonicity. The nuclear export of TonEBP was not mediated by the nuclear export receptor CRM1 or discrete nuclear export signal. In contrast, a dominant nuclear localization signal (NLS) was found in a small region of 16 amino acid residues. When short peptides containing the NLS were fused to constitutively cytoplasmic proteins, the fusion proteins displayed tonicity-dependent nucleocytoplasmic trafficking like TonEBP. Thus, tonicity-dependent activation of the NLS is crucial in the nucleocytoplasmic trafficking of TonEBP. The novel NLS is present only in the vertebrates, indicating that it developed late in evolution.</P>
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Electrochemical Properties of Coal Tar Pitch based MCMB
Suh, Jeong-Kwon,Hong, Ji-Sook,Lee, Jung-Min 한국탄소학회 2004 Carbon Letters Vol.5 No.3
MCMB (Mesocarbon microbeads) is a kind of anode material for lithium-ion secondary battery. MCMB charge/discharge cycle stability is one of the important criterion at lithium-ion battery operation. In this study, the cycling stability of a lithium-ion secondary battery has been examined. MCMB was made by the direct solvent extraction method. After the MCMB was carbonized and graphitized, the measurement of charge/discharge capacity and efficiency were carried out. In the result, discharge capacity of MCMB in the initial cycle was above 290.0 mAh/g. After the second cycle, efficiency of charge/discharge MCMB was about 98%. These results were similar to the commercial MCMB product.
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Electrochemical Properties of Coal Tar Pitch based MCMB
Jeong-Kwon Suh,Ji-Sook Hong,Jung-Min Lee 한국탄소학회 2004 Carbon Letters Vol.5 No.3
MCMB (Mesocarbon microbeads) is a kind of anode material for lithium-ion secondary battery. MCMB charge/discharge cycle stability is one of the important criterion at lithium-ion battery operation. In this study, the cycling stability of a lithium-ion secondary battery has been examined. MCMB was made by the direct solvent extraction method. After the MCMB was carbonized and graphitized, the measurement of charge/discharge capacity and efficiency were carried out. In the result, discharge capacity of MCMB in the initial cycle was above 290.0 mAh/g. After the second cycle, efficiency of charge/discharge MCMB was about 98%. These results were similar to the commercial MCMB product.
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Yu Jeong Jeong,Soon Il Kwon,Slki Park,Su Jeoung Suh,Richard Cha,Yoong Eun Kim,Sunghwa Choe 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
Brassinosteroids (BRs) control virtually every aspect of plant growth and development. BRs act alone or with other exogenous and endogenous signals including auxin and light. To screen for the novel player involved in BR signaling in Arabidopsis, we employed cDNA overexpression strategy. We created a cDNA library to be expressed under the 35S overexpression promoter, and introduced into a weak brassinosteroid insensitive 1 (bri1) mutant. The mutant dubbed bri1-5 with long petiole (blp) was identified to display bigger stature especially in hypocotyl and petiole length relative to bri1-5. Sequence analysis of the rescued transgene revealed that blp consisted of a chimeric DNA consisting of a 3’ half of PHYB, 2 bp insertion, and a part of a chloroplast ribosomal RNA. Re-introduction of chimeric DNA into bri1-5 recapitulated blp phenotype. The blp phenotypes being similar to phyB mutants led us to examine both the PHYB transcript and protein levels in the blp 35Spro:PHYB doubly homozygous line. Lower levels of both transcripts and proteins of PHYB suggested that introduction of the chimeric gene interfered with the stability of PHYB transcripts. Our results highlight that overexpression mutagenesis facilitates functional genomics to decipher a function of Arabidopsis genome.
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서정권 ( Jeong Kwon Suh ),홍지숙 ( Ji Sook Hong ),이창하 ( Chang Ha Lee ),이정민 ( Jung Min Lee ) 한국공업화학회 2003 공업화학 Vol.14 No.2
Zeolite X/activated carbon composite (zeocarbon) was synthesized from rice hulls. The adsorption equilibrium of H_2O on zeocarbon was compared with that of zeolite 13X, Langmuir-Freundlich, Excess Surface Work (ESW) and Multi-BET isotherm models were used to fit the experimental data of H_2O adsorption on zeocarbon and zeolite 13X. In the case of zeocarbon, the minimum error of 1.39% resulted when the Langmuir-Freundlich model was applied at 313.15 K. In the cases of Multi-BET and ESW models, the minimum errors were 2.29% and 0.47% at 131.15 K and 353.15 K, respectively. In the case of zeolite 13X, the minimum error was 0.10% at 0.68%, at 313.15 K and 353.15 K, respectively. ESW model was found to be in better agreement with the experimental values than Langmuir-Freundlich model or Multi-BET model. Considering that monolayer adsorption occurs in low-pressure region, while the capillary condensation phenomenon prevails in high-pressure region, ESW model fitted well under all the temperature and pressure conditions.
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Development of QTL-NIL to Blast Resistance Origined from Korean Weedy Rice
Young-Chan Cho,Man-Ki Baek,Jung-Pil Suh,Yong-Jae Won,Jong-Min Jeong,Hyun-Su Park,Jeong-Ju Kim,Jeong-Kwon Nam,Ki-Young Kim 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
Rice blast caused by the fungal pathogen, Magnaporthe oryzae, is a serious disease affecting yield loss and decreasing its quality in rice production. Rice breeders in Korea have developed many japonica varieties showing resistance to blast. However, the blast resistance in most japonica varieties has broken down within a few years after they were released to farmers because of the spread of new virulent races of M. oryzae. There is the most effectiveness to look for novel resistant gene(s) that can express the resistance to broad-spectrum races in diverse environmental conditions. We identified a major QTL, qLB4.1 linked tightly to RM6352 and RM3643 in 52.6 cM region on chromosome 4 related to the resistance for isolate inoculation and nursery test, and neck blast from a Korean weedy rice, Geumleungaengmi33. This QTL explained 26.1∼28.6% and 45.3∼53.1% of total phenotypic variation by the allele of GL33 for isolate inoculation and nursery test, respectively. A line SR30058(52)-1-1 (Suweon545) that containing the QTL qLB4.1 was developed from Ilpum*4/GL33 by marker-assisted backcross method. This line showed resistant reactions to blast nursery test across regions and years, and resistance to neck blast at the hot-spot field in Jecheon. Suweon545 showed also durable resistance of lower 10% of diseased leaf areas (DLAs) in sequential planting method. This line screened by graphical mapping using 136 SSR markers that evenly distributed on 12 chomosomes. Suweon545 contained GL33 alleles of donor parent in a total of 12 loci (8.8%) including QTL region on chromosome 4. In future, Suweon545 would be useful to develop the broad-spectrum resistance variety in japonica rice breeding program.
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