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| 1 | Effects of Momentum Ratio and Weber Number on Spray Half Angles of Liquid Controlled Pintle Injector显示文摘一个舵栓注射者为扼杀一台液体火箭引擎并且减少引擎重量是有益的。这研究为液体气体燃料在舵栓注射者的水花特征上以各种各样的注射条件探索动量比率和威伯数字的效果。一张液体表从一张中心舵栓嘴被注射,它被一口煤气的喷气从环形的差距打破。燃料的压力落下,和舵栓洞距离被看作控制变量;使用 0.1 1.0 液体注射作为为压力的一个酒吧落下,为为舵栓洞距离的煤气的喷气和 0.2 1.0 公里的压力落下的 0.010.2 酒吧。分泌物系数在 0.75 公里的舵栓洞距离前线性地被减少然后,系数稍微被增加。水花图象被一个互补金属氧化物半导体照相机与高分辨率捕获。然后,阴影和反映的图象被分析。水花分布被 patternator 从一个舵栓尖端与 50 公里的轴的距离测量。最后,角度有指数地减少的水花一半动量比率由威伯数字划分了的关联。另外,水花一半从水花分发的角度与从捕获的图象测量的那些相比被低估。 | Min Son Kijeong Yu Jaye Koo Oh Chae Kwon Jeong Soo Kim | 2015 | Journal of Thermal Science2015，24，1： | 26 |
| 2 | Verification on Spray Simulation of a Pintle Injector for Liquid Rocket Engine显示文摘The pintle injector used for a liquid rocket engine is a newly re-attracted injection system famous for its wide throttle ability with high efficiency. The pintle injector has many variations with complex inner structures due to its moving parts. In order to study the rotating flow near the injector tip, which was observed from the cold flow experiment using water and air, a numerical simulation was adopted and a verification of the numerical model was later conducted. For the verification process, three types of experimental data including velocity distributions of gas flows, spray angles and liquid distribution were all compared using simulated results. The numerical simulation was performed using a commercial simulation program with the Eulerian multiphase model and axisymmetric two dimensional grids. The maximum and minimum velocities of gas were within the acceptable range of agreement, however, the spray angles experienced up to 25% error when the momentum ratios were increased. The spray density distributions were quantitatively measured and had good agreement. As a result of this study, it was concluded that the simulation method was properly constructed to study specific flow characteristics of the pintle injector despite having the limitations of two dimensional and coarse grids. | Min Son Kijeong Yu Kanmaniraja Radhakrishnan Bongchul Shin Jaye Koo | 2016 | Journal of Thermal Science2016，25，1： | 16 |
| 3 | Tenofovir is a more suitable treatment than entecavir for chronic hepatitis B patients carrying naturally occurring rtM204I mutations显示文摘BACKGROUND Hepatitis B virus(HBV) DNA polymerase mutations usually occur to long term use of nucleos(t)ide analogues(NAs), but they can occur spontaneously in treatment-na?ve chronic hepatitis B(CHB) patients. The naturally occurring HBV DNA polymerase mutations might complicate antiviral therapy with NAs,leading to the generation of drug-resistant viral mutants and disease progression.The most common substitutions are known to be YMDD-motif mutations, but their prevalence and the influence on antiviral therapy is unclear.AIM To investigate prevalence of the naturally occurring rtM204I mutations in treatment-na?ve CHB genotype C2 patients and their influence on antiviral therapy.METHODS A total of 410 treatment-na?ve CHB patients infected with HBV genotype C2 strains were enrolled in this retrospective study. Among the 410 patients, 232 were treated with NAs for at least 12 mo. Significant fibrosis was defined as fibrosis-4 index > 3.25 or aspartate aminotransferase to platelet ratio index > 1.5.Complete viral response(CVR) during NAs was defined as undetectable serum HBV DNA(< 24 IU/m L). The rtM204I variants were analyzed by a newly developed locked nucleotide probe(LNA probe) based real-time PCR(LNA-RTPCR) method.RESULTS The LNA-RT-PCR could discriminate rtM204I mutant-type(17 patients, 4.2%)from rt M204 wild-type(386 patients, 95.8%) in 403 of 410 patients(98.3%sensitivity). Multivariate analysis showed that naturally occurring rtM204I variants were more frequently detected in patients with significant fibrosis [oddratio(OR) 3.397, 95% confidence-interval(CI) 1.119-10.319, P = 0.031]. Of 232 patients receiving NAs, multivariate analysis revealed that achievement of CVR was reversely associated with naturally occurring rtM204I variants prior to NAs treatment(OR 0.014, 95%CI 0.002-0.096, P < 0.001). Almost patients receiving tenofovir achieved CVR at 12 mo of tenofovir, irrespective of pre-existence of naturally occurring rtM204I mutations(CVR rates: patients with rtM204I, 100%;patients without rtM204I, 96.6%), whereas, pre-existence of naturally-occurring rtM204I-mutations prior to NAs significantly affects CVR rates in patients receiving entecavir(at 12 mo: Patients with rtM204I, 16.7%; patients without rtM204I, 95.6%, P < 0.001).CONCLUSION The newly developed LNA-RT-PCR method could detect naturally occurring rtM204I mutations with high-sensitivity. Theses mutations were more frequent in patients with liver fibrosis. Tenofovir is a more suitable treatment than entecavir for CHB patients carrying the naturally occurring rtM204I mutations. | Won Hyeok Choe Kijeong Kim So-Young Lee Yu-Min Choi So Young Kwon Jeong Han Kim Bum-Joon Kim | 2019 | World Journal of Gastroenterology2019，25，33： | 4 |
| 4 | Nucleotide change of codon 182 in the surface gene of hepatitis B virus genotype C leading to truncated surface protein is associated with progression of liver diseases显示文摘 | Seoung-Ae Lee Kijeong Kim Hong Kim Bum-Joon Kim | 2011 | Journal of Hepatology2011，，1： | 4 |
| 5 | The Effect of a Multispecies Probiotic Mixture on the Symptoms and Fecal Microbiota in Diarrhea-dominant Irritable Bowel Syndrome: A Randomized, Double-blind, Placebo-controlled Trial显示文摘 | Bong Ki Cha Seung Mun Jung Chang Hwan Choi In-Do Song Hyun Woong Lee Hyung Joon Kim Jae Hyuk Sae Kyung Chang Kijeong Kim Won-Seok Chung Jae-Gu Seo | 2012 | Journal of Clinical Gastroenterology2012，，3： | 3 |
| 6 | Preparation of poly ( L-lactide) microcapsules for fragrant fiber and their characteristics 显示文摘 | HONG Kijeong PARK Soomin | 2000 | Polymer2000，41，12： | 1 |
| 7 | Characterization of ovalbumin containing polyurethane microcapsules with different structures 显示文摘 | HONG Kijeong SOOMIN Park | 2000 | Polymer Testing2000，19，： | 1 |
| 8 | Effects of endurance exercise on expressions of glial fibrillary acidic protein and myelin basic protein in devel- oping rats with maternal infection-induced cerebral palsy 显示文摘 | KIJEONG KIM MAL-SOON SHIN HAN-SAM CHO | 2014 | Journal of Exercise Rehabilitation2014，10，1： | 1 |
| 9 | Treadmill exercise alleviates stress - induced impairment of social interaction through 5 -hydroxytryptamine 1A receptor activation in rats 显示文摘 | Tae - Woon Kim Baek - Vin Lim Kijeong Kim Jin - Hee Seo Chang - Ju Kira | 2015 | Journal of Exercise Rehabilitation2015，11，4： | 1 |
| 10 | Shikonin inhibits adipogenesis by modulation of the WNT/β-catenin pathway显示文摘 | Haeyong Lee Sungmin Bae Kijeong Kim Wonyong Kim Sang-In Chung Young Yang Yoosik Yoon | 2010 | Life Sciences2010，，7： | 1 |
| 11 | Characterization of ovalbumin-cintaining polyurethane microcapsules with different structures 显示文摘 | Kijeong Hong Soomin Park | 2000 | Polymer Testing2000，19，： | 1 |
| 12 | Preparation of poly( 1-lactide)microcapsules for fragrant fiber and their characteristics 显示文摘 | Kijeong Hong Soomin Park | 2000 | Polymer2000，41，： | 1 |
| 13 | The Effect of a Multispecies Probiotic Mixture on the Symptoms and Fecal Microbiota in Diarrhea-dominant Irritable Bowel Syndrome: A Randomized, Double-blind, Placebo-controlled Trial显示文摘 | Bong Ki Cha Seung Mun Jung Chang Hwan Choi In-Do Song Hyun Woong Lee Hyung Joon Kim Jae Hyuk Sae Kyung Chang Kijeong Kim Won-Seok Chung Jae-Gu Seo | 2012 | Journal of Clinical Gastroenterology2012，，3： | 1 |
| 14 | The aniline-to-azobenzene oxidation reaction on monolayer graphene or graphene oxide surfaces fabricated by benzoic acid显示文摘 | Myungiin Lee Kijeong Kim Hangil Lee | 2013 | Nanoscale Research Letters2013，8，： | 1 |
| 15 | Preparation of poly(L-lactide) microcapsules for fragrant fiber and their eharacteristics显示文摘 | Hong Kijeong Park Soomin | 2000 | Polymer2000，41，12： | 1 |
| 16 | Locked nucleic acid real-time polymerase chain reaction method identifying two polymorphisms of hepatitis B virus genotype C2 infections,rt269L and rt269I显示文摘BACKGROUND The presence of two distinct hepatitis B virus(HBV)Pol RT polymorphisms,rt269L and rt269I,could contribute to the unique clinical or virological phenotype of HBV genotype C2.Therefore,a simple and sensitive method capable of identifying both types in chronic hepatitis B(CHB)patients infected with genotype C2 should be developed.AIM To develop a novel simple and sensitive locked nucleic acid(LNA)-real timepolymerase chain reaction(RT-PCR)method capable of identifying two rt269 types in CHB genotype C2 patients.METHODS We designed proper primer and probe sets for LNA-RT-PCR for the separation of rt269 types.Using synthesized DNAs of the wild type and variant forms,melting temperature analysis,detection sensitivity,and endpoint genotyping for LNA-RT-PCR were performed.The developed LNA-RT-PCR method was applied to a total of 94 CHB patients of genotype C2 for the identification of two rt269 polymorphisms,and these results were compared with those obtained by a direct sequencing protocol.RESULTS The LNA-RT-PCR method could identify two rt269L and rt269I polymorphisms of three genotypes,two rt269L types[‘L1’(WT)and‘L2’]and one rt269I type(‘I’)in single(63 samples,72.4%)or mixed forms(24 samples,27.6%)in 87(92.6%sensitivity)of 94 samples from Korean CHB patients.When the results were compared with those obtained by the direct sequencing protocol,the LNA-RT-PCR method showed the same results in all but one of 87 positive detected samples(98.9%specificity).CONCLUSION The newly developed LNA-RT-PCR method could identify two rt269 polymorphisms,rt269L and rt269I,in CHB patients with genotype C2 infections.This method could be effectively used for the understanding of disease progression in genotype C2 endemic areas. | Kijeong Kim Yu-Min Choi Dong Hyun Kim Junghwa Jang Won Hyeok Choe Bum-Joon Kim | 2023 | World Journal of Gastroenterology2023，29，11： | 0 |
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