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Study of fibroblast growth factor 2 administration in bleomycin induced pulmonary fibrosis mice
Se Bi Lee,Hyeokku Lee,Jungyu Baek,Eunhyeok Choi,Hyunseung Lee,Juhyeok Hong,Jaehyun Kim,Jeong Yun Park,Gichang Jeong,Jieun Jeon,Jooyeon Lee,Jaehyun Park,Jimin Jang,Sang-Ryul Cha,Se-Ran Yang 한국실험동물학회 2023 한국실험동물학회 학술발표대회 논문집 Vol.2023 No.2
Comparative Study Between Geopolymer and Cement Waste Forms for Solidification of Corrosive Sludge
Lee, Juhyeok,Kim, Byoungkwan,Kang, Jaehyuk,Kang, Jaeeun,Kim, Won-Seok,Um, Wooyong Korean Radioactive Waste Society 2020 방사성폐기물학회지 Vol.18 No.4
Two waste forms, namely cement and geopolymer, were investigated and tested in this study to solidify the corrosive sludge generated from the surface and precipitates of the tubes of steam generators in nuclear power plants. The compressive strength of the cement waste form cured for 28 days was inversely proportional to waste loading (24.4 MPa for 0wt% to 2.7 MPa for 60wt%). The corrosive sludge absorbed the free water in the hydration reaction to decrease the cementation reaction. When the corrosive sludge waste loading increased to 60wt%, the cement waste form showed decreased compressive strength (2.7 MPa), which did not satisfy the acceptance criteria of the repository (3.45 MPa). Meanwhile, the compressive strength of the geopolymer waste form cured for 7 days was proportional to waste loading (23.6 MPa for 0wt% to 31.9 MPa for 40wt%). The corrosive sludge absorbed the free water in the geopolymer when the water content decreased, such that a compact geopolymer structure could be obtained. Consequently, the geopolymer waste forms generally showed higher compressive strengths than cement waste forms.
Development of a particle injection system for impurity transport study in KSTAR.
Lee, H Y,Hong, Suk-Ho,Hong, Joohwan,Lee, Seung Hun,Jang, Siwon,Jang, Juhyeok,Jeon, Taemin,Park, Jae Sun,Choe, Wonho American Institute of Physics 2014 Review of scientific instruments Vol.85 No.11
<P>A solid particle injection system is developed for KSTAR. The system has a compact size, compatibility with a strong magnetic field and high vacuum environment, and the capability to inject a small amount of solid particles with a narrow injection angle. The target flight-distance of 10 cm has been achieved with a particle loss rate of less than 10%. Solid impurity particles such as tungsten and carbon will be injected by this system at the midplane in KSTAR. The impurity transport feature will be studied with a soft X-ray array, a vacuum ultra-violet diagnostic, and Stand Alone Non-Corona code.</P>
Modified Analytic Solutions of F.C.C. Metal Clusters
Juhyeok Lee,Hojing Kim Korean Chemical Society 1993 Bulletin of the Korean Chemical Society Vol.14 No.5
By including the overlap integrals between atomic orbitals, the modified cluster orbitals for a metal cluster of face centered cubic lattice are found. The modified analytic solutions of the cluster are obtained from them with the assumption that the cluster orbitals with different state indices do not mix together. The physical properties-the HOMO levels and the unit electronic energies-of Ni, Pd, and Pt clusters of various size, calculated by the modified cluster orbital method, agree better with the results obtained by the Extended Huckel calculation than those of the previous(unmodified) cluster orbital method do. As a result, it is verified that the physical properties, at least those related to the energy levels, obtained by the Extended Huckel method may be reproduced by use of the modified cluster orbital method instead.
Analytic Solutions of Finite F.C.C. Metal Clusters with Cluster Orbitals
Juhyeok Lee,Geun Ha Ryu,Hojing Kim Korean Chemical Society 1993 Bulletin of the Korean Chemical Society Vol.14 No.1
By use of cluster orbitals, analytic solutions of finite face-centered cubic clusters are obtained. Taking interactions between up to the second nearest neighbors into account, the forms of all the elements of the Hamiltonian matrix are found explicitly within Huckel approximation. By adopting $D_{2k}$ point group to the cluster, the matrix is simplified. We assume that the cluster orbitals can mix together only when their state indices are indentical. It is then possible to calculate various physical properties of face-centered cubic metal clusters and example are shown for palladium clusters. The results show that density of states and projected density of states are similar, qualitatively, with those obtained by extended Huckel calculation.
Yi Lee,Moon Kyo Kim,Mi Sun Lee,Juhyeok Kim,Enkhtsetseg Yeruult,Suk-Yoon Kwon,Sol Ji Noh,Seong Won Park 한국원예학회 2021 한국원예학회 학술발표요지 Vol.2021 No.10
Watermelon (Citrullus lanatus) is an important fruit that grows in temperate tropical climates around the world. In this study, quantitative trait loci (QTL) analysis was performed using the genotypes and phenotypes of 87 F2 populations derived from CBARES1 and CBARES2 from the Korean watermelon resources. A total of 37 quantitative traits related to leaves, stems, flowers, and fruits were investigated. The single nucleotide polymorphism (SNP) locus and the insertion or deletion (InDel) locus were found by comparing the nucleotide sequences of the parent generation, CBARES1 and CBARES2. SNP markers were genotyped through resequencing and InDel markers genotyped through PCR and electrophoresis. A linkage map with a total length of 3036.90 cM was constructed consisting of 1,539 SNP markers and 80 InDel markers. InDel data from the actual experimental results were compared with SNP data to confirm the linkage distance and location on the chromosome. As a result, from the 80 InDel markers, 56 were matched to the SNP location and 24 slightly deviated. QTL analysis with the inclusive composite interval mapping (ICIM) method revealed that 37 traits showed significant QTL results in 73 regions of the chromosome. The epistasis QTL analysis was performed to supplement the part that did not show a clear logarithm of the odds ratio (LOD) value due to the additive effect. The linkage map and QTL created in this study are important resources for gene discovery and improvement of watermelon quality.
Kim Moonkyo,Yeruult Enkhtsetseg,Lee Dong Geun,Oh Ha Kyung,Lee Mi Sun,Kim Juhyeok,Park Sang Ik,Gil Jinsu,Lee Kyeong Hee,이문순,Lee Yi 한국원예학회 2024 Horticulture, Environment, and Biotechnology Vol.65 No.3
Jujube ( Ziziphus jujuba Mill.) is a plant belonging to the genus Ziziphus of the family Rhamnaceae. Z. jujuba is generally rich in nutrients—vitamin C, thiamin, and ribofl avin—making it an excellent source of functional food. Z. jujuba cultivation has a long history, resulting in the creation of numerous cultivars, and the economic value of this plant has recently been on the rise. Therefore, there is a need for easy and accurate methods to distinguish the cultivars. We developed insertion or deletion (InDel) markers using chloroplast (CP) DNA to identify Z. jujuba cultivars. A total of 192 InDel loci were found and 21 InDel markers were developed. Twenty-two InDel markers were used for diversity analysis, including the Zj-InDel-1 marker developed in the previous study. The size of the InDel loci varied from 4 to 200 bp. The maximum value of polymorphism information content (PIC) was 0.35, the minimum value was 0.03, and the average was 0.31. The 61 Z. jujuba cultivars were grouped into 8 CP types by the 22 CP InDel markers. The ‘Dongjo’, ‘Sanjo’, ‘Tibetwang’ and ‘Wolgwang’ cultivars were classifi ed independently among the 61 cultivars. The InDel markers developed in this study could be used for cultivar identifi cation and breeding of Z. jujuba .