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      • W(110) 표면에 CO의 흡착

        이경희,유위량,한현석,부진효,이순보,곽현태 성균관대학교 기초과학연구소 1998 論文集 Vol.49 No.-

        The interaction of CO with W(110) surface was investigated through LEED, TDS, and photoelectron spectroscopy using synchrotron radiation under UHV condition. After CO saturation at RT, two desorption states, called α and β , were observed at about 400 and 1150 K in thermal desorption spectra, respectively. The kinetics of 3-CO followed the first order kinetics, indicating the existence of molecular CO on W(110) surface. This is contrary to the previous results. The O 1s BE(binding energy) of CO adsorbed on W(110) surface at room temperature was 529.9 eV. On the other hand, the O 1s BE of β-CO after heating to 900 K was different from that of oxygen adsorbed W(110) surface, suggesting a different adsorption state. According to the UP valence band spectra, we observed two peaks at near -10.7 eV (4σ) and -7.0 eV (5σ+1π), indicating the molecular adsorption of CO at room temperature. Furthermore we could see the 4σ peak at the various photon energy and elevated temperatures. Comparing the energy separation, Δ(4σ-1π) , between 4σ and 1π UP peaks of chemisorbed CO, we found that an increased separation reflects an decreased C-O bond strength. Therefore on the basis of TDS and photoelectron spectroscopy, we could suggest that β state of CO on W(110) may not be dissociated and has an adsorption geometry of lying-down mode.

      • KCI등재

        일반 논문 : 홍대용의 연행록에 나타난 한족 지식인 형상 연구

        한위성 ( Wei Xing Han ) 한국어교육학회(구 한국국어교육연구학회) 2012 국어교육 Vol.0 No.139

        North Korea north school pioneer HongDaRong through the objective description the qing dynasty civilization scene of “yan ji, is really the reappearance of the qing dynasty rule as a” different nation “drag out an ignoble existence of the han nationality scholar`s miserable situation. These literature in its “daming personal loyalty theory” and the traditional Confucianism thought influence, described the loss of land a conquered people, also described as inherit the Chinese civilization orthodox thinking worthy of the name of the Chinese civilization spokesperson. These people with the qing dynasty government according to the relationship between the degree of relationship can be divided into three categories, respectively represent the class with a particular group of the han nationality scholar image, so indirectly reflected the social political system and cultural environment on different characters and the influence of ethnic differences.

      • FBW7 Upregulation Enhances Cisplatin Cytotoxicity in Non-small Cell Lung Cancer Cells

        Yu, Hao-Gang,Wei, Wei,Xia, Li-Hong,Han, Wei-Li,Zhao, Peng,Wu, Sheng-Jun,Li, Wei-Dong,Chen, Wei Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11

        Introduction: Lung cancer is extremely harmful to human health and has one of the highest worldwide incidences of all malignant tumors. Approximately 80% of lung cancers are classified as non-small cell lung cancers (NSCLCs). Cisplatin-based multidrug chemotherapy regimen is standard for such lesions, but drug resistance is an increasing problem. F-box/WD repeat-containing protein 7 (FBW7) is a member of the F-box protein family that regulates cell cycle progression, and cell growth and differentiation. FBW7 also functions as a tumor suppressor. Methods: We used cell viability assays, Western blotting, and immunofluorescence combined with siRNA interference or plasmid transfection to investigate the underlying mechanism of cisplatin resistance in NSCLC cells. Results: We found that FBW7 upregulation significantly increased cisplatin chemosensitivity and that cells expressing low levels of FBW7, such as NCI-H1299 cells, have a mesenchymal phenotype. Furthermore, siRNA-mediated silencing or plasmid-mediated upregulation of FBW7 resulted in altered epithelial-mesenchymal transition (EMT) patterns in NSCLC cells. These data support a role for FBW7 in regulating the EMT in NSCLC cells. Conclusion: FBW7 is a potential drug target for combating drug resistance and regulating the EMT in NSCLC cells.

      • Genetic Variants at 6p21.1 and 7p15.3 Identified by GWASs of Multiple Cancers and Ovarian Cancer Risk: a Case-control Study in Han Chinese Women

        Li, Da-Ke,Han, Jing,Liu, Ji-Bin,Jin, Guang-Fu,Qu, Jun-Wei,Zhu, Meng,Wang, Yan-Ru,Jiang, Jie,Ma, Hong-Xia Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.1

        A recent study summarized several published genome-wide association studies (GWASs) of cancer and reported two pleiotropic loci at 6p21.1 and 7p15.3 contributing to multiple cancers including lung cancer, noncardia gastric cancer (NCGC), and esophageal squamous-cell carcinoma (ESCC) in Han Chinese. However, it is not known whether such genetic variants have similar effects on the risk of gynecologic cancers, such as ovarian cancer. Hence, we explored associations between genetic variants in 6p21.1 and 7p15.3 and ovarian cancer risk in Han Chinese women. We performed an independent case-control study by genotyping the two loci (rs2494938 A > G at 6p21.1 and rs2285947 A > G at 7p15.3) in a total of 377 ovarian cancer cases and 1,034 cancer-free controls using TaqMan allelic discrimination assay. We found that rs2285947 at 7p15.3 was significantly associated with risk of ovarian cancer with per allele odds ratio (OR) of 1.33 [95% confidence interval (CI): 1.08-1.64, P=0.008]. However, no significant association was observed between rs2494938 and ovarian cancer risk. Our results showed that rs2285947 at 7p15.3 may also contribute to the development of ovarian cancer in Han Chinese women, further suggesting pleiotropy of 7p15.3 in multiple cancers.

      • New Structure Design of Magnet for 1 MJ HTS SMES

        Wei Wei,Yinghong Luo,Liying Han 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.9

        In recent years, the superconducting technology is popular in our production and life. An increasing number of researchers and institutions participate in study of the super-conducting magnetic energy storage (SMES) system. SMES is widely used in power sup-ply system, new energy system and pulsed power supply system. However, the leakage magnetic field of traditional SMES is more serious, which limited the application in engi-neering. This paper proposes an improved scheme for the 1 MJ single-solenoid structure magnet by using the actively shielding theory. Moreover, by using particle swarm optimi-zation, the structural parameters of the superconducting magnets are optimized respec-tively. Finally, the ANSYS modeling simulation is built by these structural parameters, all simulation data are analyzed and compared.

      • A Study of the Orff Teaching Method on Interpersonal Skills, Self-Esteem, and Well-being of Music Education Undergraduates

        Han Wei KOREA INSTITUTE FOR HUMANITIES AND SOCIAL SCIENCES 2023 Journal of Arts and Cultural Studies(ACS) Vol.2 No.1

        The Orff method is one of the most popular music teaching systems in the world. It was first created by the famous educator and child musician Carl Orff and has since been inherited and developed by many experts. With the reform and opening up of China and the introduction of Orff’s music teaching method, the theoretical and practical aspects of music education in China have quietly changed. In this study, the effects of the Orff method and the traditional method on the interpersonal skills, self-esteem and well-being of music education undergraduates at GG University in China were investigated using an experimental control method. The results of the study showed that under both teaching methods, the interpersonal skills, self-esteem and happiness of the music education undergraduates in the experimental group were significantly higher than those in the control group after 12 weeks of the Orff teaching method intervention (p<0.05), therefore, it was concluded that the Orff teaching method could influence emotion regulation, strengthen positive emotions and regulate individuals’ negative emotions, enhance interpersonal skills, self-esteem and happiness, guiding the university students to face future development and challenges with confidence, maintaining their mental health, and promoting the better development of education. In the past, the study of the Orff music teaching method was only limited to the musical initiation of children from kindergarten to primary school. However, as more and more people around the world study and practice the Orff education system, it has been extended to secondary schools, universities and colleges. It has now been extended to a wide range of areas such as secondary schools, music classes in colleges and universities, music therapy and health for the elderly, with people of all ages enjoying the benefits of Orff music education. This study demonstrates that the Orff method can influence emotion regulation, strengthen positive emotions and regulate negative emotions of individuals, and enhance interpersonal skills, self-esteem and well-being.

      • KCI등재

        De novo assembly and transcriptome analysis of differentially expressed genes relevant to variegation in hawthorn flowers

        Wei Ji,Wei Zhao,Rong‑Chen Liu,Xiao‑Bo Jiao,Kai Han,Zhong‑Yi Yang,Mei‑Ying Gao,Rui Ren,Xiu‑Juan Fan,Ming‑Xia Yang 한국식물생명공학회 2019 Plant biotechnology reports Vol.13 No.6

        Flower color variegation has been observed in many plant species. However, pink flowers on the white-blooming hawthorn trees found by our group earlier have never been reported. To better understand the differentially expressed genes (DEGs) in variegated hawthorn flowers, white and pink flowers at different developmental stages (S1 and S2) underwent transcriptome sequencing separately. Approximately 34.28 Gb of high-quality data were obtained and assembled into 100,013 unigenes with an average length of 706.93 bp. These unigenes were further subjected to functional annotation and biochemical pathway analysis, and DEGs of two types of hawthorn flowers at different developmental stages were studied. Based on the enrichment analysis of DEGs, eight anthocyanin-modified enzyme genes or other enzyme genes that indirectly affect anthocyanin synthesis (5AT, 3GGT , and AI, β-Glu, two Aux/IAAs, two PODs), eight structural genes (UFGT, DFR, CHI, two F3Hs, and three PALs), and three transcription factors (one MYB and two bHLHs) were also identified. We randomly selected 15 genes, and the trends in the expression levels of these genes in the organs of white and pink flowers at different developmental stages were verified by quantitative real-time PCR. Mass sequence data obtained by RNA-seq of variegated hawthorn flowers provided basic sequence information and a unique opportunity to uncover the genetic mechanisms under-lying flower color variegation.

      • Requirement for ERK Activity in Sodium Selenite-induced Apoptosis of Acute Promyelocytic Leukemia-derived NB4 Cells

        Han, Bingshe,Wei, Wei,Hua, Fangyuan,Cao, Tingming,Dong, Hua,Yang, Tao,Yang, Yang,Pan, Huazhen,Xu, Caimin Korean Society for Biochemistry and Molecular Biol 2007 Journal of biochemistry and molecular biology Vol.40 No.2

        Our previous study has shown that sodium selenite can cause apoptosis in acute promyelocytic leukemia-derived NB4 cells in a caspase-dependent manner, but the detailed mechanism is unknown. Here we demonstrate a requirement for extracellular signal-regulated protein kinase (ERK) in mediating sodium selenite -induced apoptosis in NB4 cell. Though no apparent elevation of ERK activity was observed during the apoptosis in NB4 cells caused by 20 μM sodium selenite treatment, PD98059 and U0126, specific chemical inhibitors of the MEK/ERK signaling pathway, were shown to strongly prevent the apoptosis process, while ERK activator TPA enhanced the process. It is also known that p38 MAPK inhibitor SB203580 and JNK inhibitor SP600125 had slight effects on apoptosis. Further study indicated that ERK exerted its proapoptotic effect only at the early stage of apoptosis and played an antiapoptotic role at the later stages. Taken together, our findings suggest that ERK plays an active role in mediating sodium seleniteinduced apoptosis in NB4 cells .

      • KCI등재

        Chemical Constituents from the Aerial Parts of Isodon coetsa and their Cytotoxicity

        Wei Zhao,Jian Xin Pu,Xue Du,Yong Zhao,Fei He,Hai Bo Zhang,Yong Bo Xue,Wei Lie Xiao,Han Dong Sun,Ying Li Wu,Guo Qiang Chen 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.12

        Three new compounds (1-3), including a neolignan, a triterpenoid, and a diterpenoid, together with twenty known compounds (4-23), were isolated from the aerial parts of Isodon coetsa. Their structures and relative configurations were elucidated on the basis of spectroscopic data. Compounds 1, 3, 5-9, 11-13, 16-17, and 19-23 were evaluated for their cytotoxicity against HT-29, BEL-7402, and SK-OV-3 human tumor cell lines. Compound 7 showed significant inhibitory effects on all three types of cells, with IC50 values of 2.52, 3.06, 2.14 μM, respectively.

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