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Impact of Global Economic Policy Uncertainty and Stock Market Volatility on Korea’s Trade
Yun-Zhang Li,Yue Li,Hui-Li Zhang,최태영 한국무역통상학회 2023 무역통상학회지 Vol.23 No.6
We employ a time-variant parameter structure vector auto-regression model with stochastic volatility. The Markov Chain Monte Carlo method estimates a TVP-VAR model with stochastic volatility. We also employ different lag periods and time points to investigate the impact of economic policy uncertainty and the stock market on Korea’s trade. First, we find that the stock markets exert a positive impact on Korea’s imports and exports. Second, we find that the global economic policy uncertainty index has a negative impact on Korea’s imports. Third, we find that global economic policy uncertainty has a negative impact on Korea’s exports in the short-term, but a positive impact persists in the medium- to long-term. These findings reveal that the global economic policy uncertainty index will have an impact on the demand-side economy for Korea’s export trade. Since Korea is one of the major exporters of high-tech and high value-added products in the world, changes in global economic policies will directly impact the demand for commodities, thereby affecting Korea’s export trade. On the contrary, the uncertainty of Korea’s economic policy will impact the operation of exporting companies, namely, the supply-side economy
Yue, Li Li,Yang, Yi Da,Kim, Hong Seung,Jang, Nak Won,Yun, Young 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol. No.
<P>We successfully deposited hexagonal wurtzite Mg (x) Zn1-x O (0 a parts per thousand currency sign x a parts per thousand currency sign 0.18) films on Si substrates by using RF magnetron co-sputtering with ZnO and Mg0.3Zn0.7O targets. The Mg content was varied by controlling the RF power of the Mg0.3Zn0.7O target while the RF power of the ZnO target was fixed at 100 W. The electrical properties of the Mg (x) Zn1-x O films were investigated by using a transmission line model (TLM) with Ti/Au electrode and Hall effect measurements. The X-ray diffraction (XRD) results demonstrate that some Zn atoms can be replaced by Mg atoms in the Mg (x) Zn1-x O films. As the Mg content was increased from 0 at.% to 18 at.%, the resistivity of Mg (x) Zn1-x O films increased and the carrier concentration decreased from 1.17 x 10(19) cm(-3) to 1.17 x 10(17) cm(-3), which indicates a decrease in the number of oxygen vacancies. Meanwhile, the Hall mobility increased to 15.3 cm(2)/Vs. The electrical properties of Mg (x) Zn1-x O films were tuned by using the Mg content.</P>
Wang, Yue-Yun,Li, Li,Wei, Sheng,Peng, Ji,Yuan, Shi-Xin,Xie, Jian-Sheng,Liu, Zhi-Hua Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12
Purpose: Human papillomavirus (HPV) infection plays an important role in the development of cervical cancer, but the prevalence of HPV infection in women of Shenzhen city remains unclear. The present study was performed to describe the change of cervical HPV infection in females who participated in voluntary cervical cancer screening from 2006 to 2010 in Shenzhen city, China. Methods: A total of 4, 413 women were recruited. HPV infections were genotyped by polymerase chain reaction (PCR) and reversed dot blot hybridization in Shenzhen Maternity and Child Health Hospital. Results: The prevalence of HPV infection was 13.8%. The five most commonly found HPV types were HPV16 (3.47%), HPV58 (1.68%), HPV33 (1.38%), HPV43 (1.36%) and HPV18 (1.27%). The secular trends of major HPV type-specific were diverse. Among of them, the prevalence of HPV18 increased sharply while others increased slowly or even decreased in the period. The change of total HPV, single HPV and multiple HPV infection were similar during the five years. Conclusions: Our findings suggested that HPV infection is common with HPV16 and HPV 58 as the primary subtypes in women in Shenzhen city.The prevalence of HPV 18 infection is increasing faster than any others, which will lead it to be one of the main subtypes in this city in the future.
( Zheng Jie Liu ),( Jian Wei Yang ),( Chang Zhen Li ),( Jia Xing Li ),( Ya Juan Jiang ),( Yun Hui Dong ),( Yue Yun Li ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.6
Polyaniline modified graphene oxide (PANI/GO) composites were synthesized by dilute polymerization technique and were characterized by Fourier transformed infrared spectroscopy (FTIR), Raman spectroscopy, and scanning electron microscopy (SEM). The characterization results indicated that polyaniline molecules were successfully grafted on GO surfaces. The application of PANI/GO composites to the adsorption of heavy metals from aqueous solutions was investigated under ambient conditions. The maximum adsorption capacities of Co(II), Ni(II), Pb(II) and U(VI) ions on PANI/GO composites calculated from Langmuir models are 22.28, 25.67, 65.40 and 1552.31 mg/g, respectively. The excellent adsorption capacity suggests that PANI/GO composites can be applied as a promising adsorbent in heavy metal pollution cleanup in environmental pollution management.
( Yun Deng ),( Bi Sheng Liu ),( Xiong Wei Fan ),( Yue Qun Wang ),( Ming Tang ),( Xiao Yang Mo ),( Yong Qing Li ),( Zao Chu Ying ),( Yong Qi Wan ),( Na Luo ),( Jun Mei Zhou ),( Xiu Shan Wu ),( Wu Zhou 한국생화학분자생물학회 (구 한국생화학회) 2010 BMB Reports Vol.43 No.3
In this study, we report the identification and characterization of a novel C2H2 zinc finger protein, ZNF552, from a human embryonic heart cDNA library. ZNF552 is composed of three exons and two introns and maps to chromosome 19q13.43. The cDNA of ZNF552 is 2.3 kb, encoding 407 amino acids with an amino-terminal KRAB domain and seven carboxyl-terminal C2H2 zinc finger motifs in the nucleus and cytoplasm. Northern blotting analysis indicated that a 2.3 kb transcript specific for ZNF552 was expressed in liver, lung, spleen, testis and kidney, especially with a higher level in the lung and testis in human adult tissues. Reporter gene assays showed that ZNF552 was a transcriptional repressor, and overexpression of ZNF552 in the COS-7 cells inhibited the transcriptional activities of AP-1 and SRE, which could be relieved through RNAi analysis. Deletion studies showed that the KRAB domain of ZNF552 may be involved in this inhibition. [BMB reports 2010; 43(3): 193-198]
Yue Sun,Li Li,Zhihao Chen,Xiaoshuang Yin,Wenzhong Yang,Yun Chen,Ying Liu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
The calcium sulfate scale is a common scale in the industrial water system, which is difficult to beremoved by common chemical cleaning methods. In this paper, a new phosphorous free of 1,6-Diaminohexane-contained polyaminoamide dendrimers (PAMAM) scale inhibitor with a threedimensional(3D) branched structure has been developed. The scale inhibition performances of differentgenerations of PAMAM dendrimers (PAMAM-mid, PAMAM-0G, PAMAM-0.5G and PAMAM-1G) are estimatedby the static scale inhibition method. Moreover, the effects of the scale inhibitor concentrationsand solution temperatures on the CaSO4 scale inhibition efficiency are thoroughly discussed. Results indicatethat the PAMAM-mid and PAMAM-0.5G) exhibit excellent inhibition performance on CaSO4 precipitation. Especially, the CaSO4 scale inhibition efficiency of PAMAM-0.5G is above 95% when the dose is10 mg/L, and the corresponding value is almost 100% when the inhibitor dose is 20 mg/L. In addition,the influence of descaling agents on the crystal and morphology of CaSO4 scales are studied by XRDand SEM tests. The results show that the scale inhibition ability of the PAMAM molecules mainly inhibitsthe growth of these crystal planes by adsorption on the surface of the growing crystal. Molecular dynamicssimulation results find that the PAMAM-0.5G dendrimer molecule can energetically interact well withthree crystal planes of calcium sulfate dihydrate. Finally, the simulation results provide a theoreticalguidance to judge the performance of scale inhibitors and synthesize new high-efficiency scale inhibitor.
Yue Li,Song Zhu,Yun Feng,Feifei Xu,Jianguo Ma,Fang Zhong 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.1
The effects of alkalization treatments on color,colorimetric fractions, total polyphenol content, andanthocyanin content of cocoa powder were investigated. Adarker color and a lower total polyphenol content wereobtained for cocoa powder alkalized using a K2CO3solution than with an NaOH solution. A high temperatureand basic pH conditions favored formation of darkcomponents during alkalization due to sugar degradation,Maillard reactions, and anthocyanin polymerizing. Theanthocyanin content decreased with an increasing alkaliconcentration, suggesting that more anthocyanins weretransformed into brown polymers in darker cocoa powder. Cocoa powder with a heavy degree of alkalization had thelowest ratio of monomer anthocyanins to yellow/brownpolymer content. OD460/OD525 values for alkalized sampleswere higher than for non-alkalized samples. Cocoa powderpresented a better color quality after alkalization treatment.
( Yun Deng ),( Yong Qing Li ),( Xiong Wei Fan ),( Wu Zhou Yuan ),( Hua Ping Xie ),( Xiao Yang Mo ),( Yan Yan ),( Jun Mei Zhou ),( Yue Qun Wang ),( Xian Li Ye ),( Yong Qi Wan ),( Xiu Shan Wu ) 생화학분자생물학회 (구 한국생화학분자생물학회) 2010 BMB Reports Vol.43 No.6
LBH is a transcription factor as a candidate gene for CHD associated with partial trisomy 2p syndrome. To identify potential LBH-interacting partners, a yeast two-hybrid screen using LBH as a bait was performed with a human heart cDNA library. One of the clones identified encodes αB-crystallin. Co-immunoprecipitation and GST pull-down assays showed that LBH interacts with αB-crystallin, which is further confirmed by mammalian two-hybrid assays. Co-localization analysis showed that in COS-7 cells, αB-crystallin that is cytoplasmic alone, accumulates partialy in the nucleus when co-transfected with LBH. Transient transfection assays indicated that overexpression of LBH or αB-crystallin reduced the transcriptional activities of p53 and p21, respectively, Overexpression of both αB-crystallin and LBH together resulted in a stronger repression of the transcriptional activities of p21 and p53. These results showed that the interaction of LBH and αB-crystallin may inhibit synergistically the transcriptional regulation of p53 and p21. [BMB reports 2010; 43(6): 432-437]
ZNF424, a novel human KRAB/C2H2 zinc finger protein, suppresses NFAT and p21 pathway
( Yue Qun Wang ),( Jun Mei Zhou ),( Xiang Li Ye ),( Yong Qi Wan ),( Yong Qing Li ),( Xiao Yan Mo ),( Wu Zhou Yuan ),( Yan Yan ),( Na Luo ),( Ze Qun Wang ),( Xiong Wei Fan ),( Yun Deng ),( Xiu Shan Wu 한국생화학분자생물학회 (구 한국생화학회) 2010 BMB Reports Vol.43 No.3
Zinc finger-containing transcription factors are the largest single family of transcriptional regulators in mammals, which play an essential role in cell differentiation, cell proliferation, apoptosis, and neoplastic transformation. Here we have cloned a novel KRAB-related zinc finger gene, ZNF424, encoding a protein of 555aa. ZNF424 gene consisted of 4 exons and 3 introns, and mapped to chromosome 19p13.3. ZNF424 gene was ubiquitously expressed in human embryo tissues by Northern blot analysis. ZNF424 is conserved across species in evolution. Using a GFP-labeled ZNF424 protein, we demonstrate that ZNF424 localizes mostly in the nucleus. Transcriptional activity assays shows ZNF424 suppresses transcriptional activity of L8G5-luciferase. Overexpression of ZNF424 in HEK- 293 cells inhibited the transcriptional activity of NFAT and p21, which may be silenced by siRNA. The results suggest that ZNF424 protein may act as a transcriptional repressor that suppresses NFAT and p21 pathway to mediate cellular functions. [BMB reports 2010; 43(3): 212-218]