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Meng, Xiu-hui 동중앙아시아경상학회 2015 한몽경상학회 학술대회 Vol.2015 No.10
In recent years, upgrading of industrial structure receives much concern in China. The paper analyses the influence mechanism of financial development and two-way FDI on industrial restructuring at first and then gives an empirical study using Cointegration Test, Vector Error Correction Model (VEC Model) and Impulse Response on rationalization and advancement of industrial structure, using data of Shandong province from 1991 to 2014. The results show that there are long-term equilibrium relationships between the variables and the rationalization and advancement of industrial structure. VEC Model shows that, in the short term, the effect of the factors on the upgrading of industrial structure in Shandong province is not significant. The impulse response analysis shows that the variables have negative impact on the industrial structure rationalization and positive impact on the industrial structure advancement.
Meng, Xiu-hui,Zhang, Zhen-min 동중앙아시아경상학회 2014 한몽경상연구 Vol.25 No.1
Given the scale of foreign exchange reserve, the key problem in its management is how to allocate the currency structure. Based on the portfolio theory and using quadratic programming model, this paper get the main currency weight of China's foreign exchange reserves at first and give a further analysis using Heller-Knight model and Dooley model. The conclusion is that the U.S. dollar, Japanese yen, euro and pound are the main reserve currencies, the U.S. dollar and Japanese yen are the dominant ones currently. China should give comprehensive analysis on various factors which affect reserve currency structure and adjust it timely. In recent years, China’s huge foreign exchange reserves (FX reserves) have aroused wide concern and the amount reached to $3.95 trillion as of 2014 March. At present China’s FX reserves are invested in U.S. treasuries and are facing great risk of depreciation due to the QE of America and the European debt crisis. So it’s a key problem of how to allocate the reserve currencies in China. Based on the portfolio theory, Heller-Knight model and Dooley model, combined with the increase in China's economic development and foreign exchange reserves, this paper demonstrates in details the currency selection and allocation of foreign exchange reserves.
Meng, Xiu-hui,Zhang, Zhen-min 동중앙아시아경상학회 2015 한몽경상연구 Vol.26 No.3
In recent years, upgrading of industrial structure receives much concern in China. The paper analyses the influence mechanism of financial development and two-way FDI on industrial restructuring at first and then gives an empirical study using Cointegration Test, Vector Error Correction Model (VEC Model) and Impulse Response on rationalization and advancement of industrial structure, using data of Shandong province from 1991 to 2014. The results show that there are long-term equilibrium relationships between the variables and the rationalization and advancement of industrial structure. VEC Model shows that, in the short term, the effect of the factors on the upgrading of industrial structure in Shandong province is not significant. The impulse response analysis shows that the variables have negative impact on the industrial structure rationalization and positive impact on the industrial structure advancement.
Man Zhang,Su‑Su Li,Qiao‑Mei Xie,Jian‑Hua Xu,Xiu‑Xiu Sun,Fa‑Ming Pan,Sheng‑Qian Xu,Sheng‑Xiu Liu,Jin‑Hui Tao,Shuang Liu,Jing Cai,Pei‑Ling Chen,Long Qian,Chun‑Huai Wang,Chun‑Mei Liang,Hai‑Liang Huang,Ha 한국유전학회 2018 Genes & Genomics Vol.40 No.10
Although the current glucocorticoids (GCs) treatment for systemic lupus erythematosus (SLE) is effective to a certain extent, the difference in therapeutic effect between patients is still a widespread problem. Some patients can have repeated attacks that greatly diminish their quality of life. This study was conducted to investigate the relationship between HSP90AA2 polymorphisms and disease susceptibility, GCs efficacy and health-related quality of life (HRQoL) in Chinese SLE patients. A case–control study was performed in 470 SLE patients and 470 normal controls. Then, 444 patients in the case group were followed up for 12 weeks to observe efficacy of GCs and improvement of HRQoL. Two single nucleotide polymorphisms (SNPs) of HSP90AA2 were selected for genotyping: rs1826330 and rs6484340. HRQoL was assessed using the SF-36 questionnaire. The minor T allele of rs1826330 and the TT haplotype formed by rs1826330 and rs6484340 showed associations with decreased SLE risk (T allele: PBH = 0.022; TT haplotype: PBH = 0.033). A significant association between rs6484340 and improvement of HRQoL was revealed in the follow-up study. Five subscales of SF-36 were appeared to be influenced by rs6484340: total score of SF-36 (additive model: PBH = 0.026), physical function (additive model: PBH = 0.026), rolephysical (recessive model: PBH = 0.041), mental health (dominant model: PBH = 0.047), and physical component summary (additive model: PBH = 0.026). No statistical significance was found between HSP90AA2 gene polymorphisms and GCs efficacy. These results revealed a genetic association between HSP90AA2 and SLE. Remarkably, HSP90AA2 has an impact on the improvement of HRQoL in Chinese population with SLE.
( Xiu Zhi Gao ),( Hui Liu ),( Xin Xin Yi ),( Yi Qian Liu ),( Xiao Dong Wang ),( Wen Sheng Xu ),( Qi Gen Tong ),( Zong Jun Cui ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.12
Traditional soybean paste from Shandong Liangshan and Tianyuan Jiangyuan commercial soybean paste were chosen for analysis and comparison of their bacterial and fungal dynamics using denaturing gel gradient electrophoresis and 16S rRNA gene clone libraries. The bacterial diversity results showed that more than 20 types of bacteria were present in traditional Shandong soybean paste during its fermentation process, whereas only six types of bacteria were present in the commercial soybean paste. The predominant bacteria in the Shandong soybean paste were most closely related to Leuconostoc spp., an uncultured bacterium, Lactococcus lactis, Bacillus licheniformis, Bacillus spp., and Citrobacter freundii. The predominant bacteria in the Tianyuan Jiangyuan soybean paste were most closely related to an uncultured bacterium, Bacillus licheniformis, and an uncultured Leuconostoc spp. The fungal diversity results showed that 10 types of fungi were present in the Shandong soybean paste during the fermentation process, with the predominant fungi being most closely related to Geotrichum spp., an uncultured fungal clone, Aspergillus oryzae, and yeast species. The predominant fungus in the commercial soybean paste was Aspergillus oryzae.
Hui Liu,Xiu-wen Lv,Shi-chao Chen,Qiang Zhou,Piao Zhou,Wei-lian Qu 한국강구조학회 2023 International Journal of Steel Structures Vol.23 No.1
Welding defects are unavoidable for welded structures, which can lead to fatigue damage even under the random wind load with small amplitude. It is therefore necessary to explore the effect of welding defect on the fatigue properties of welded steel pipes. Three groups of welded steel pipe specimens were designed according to welding defect conditions, i.e. specimens without welding defect (Group I), specimens with incomplete fusion (Group II), and specimens with welding porosity (Group III). Uniaxial tension–compression and torsion high-cycle fatigue tests were carried out. S–N curves of uniaxial tension–compression and torsion tests were obtained by cyclic loading with equal stress amplitude. The test results show that the high-cycle fatigue strength of weldments is obviously lower than that of base metal with the same strength under uniaxial tension–compression and torsion loading. In addition, the welding defects result in a decrease in fatigue strength, while the decrease extent by welding porosity is greater than that by incomplete fusion. Finally, because of the inherent multiaxial loading characteristics of welded structures, the high-cycle multiaxial fatigue life of steel pipe weldments was also predicted by using the modified Wöhler curve method based on the uniaxial fatigue test results. It can be found that when the stress amplitude is constant, the fatigue life of welded steel pipe decreases and the modified Wöhler curves move downward more quickly with the increase of damage parameter defined as the ratio of normal stress amplitude to shear stress amplitude on the critical plane, which means that normal stress amplitude will accelerate the cracks growth and result in faster failure of the weld materials.
( Xiu Ling Li ),( Fu Ying Feng ),( Yong Hui Zeng ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.11
To probe the genomic properties of microbes thriving in desert lakes, we sequenced the full genome of a betaproteobacterial strain (SL110) belonging to the understudied genus Caenimonas of the family Comamonadaceae. This strain was isolated from a freshwater lake in the western Gobi Desert, Northern China. Its genome contains genes encoding carbon monoxide dehydrogenase, nitrate reductase, nitrite reductase, nitric oxide reductase, and sulfur oxidation enzymes, highlighting the potentially important contribution of this group of bacteria to the cycling of inorganic elements in nature. Unexpectedly, a coenzyme F420 biosynthesis gene cluster was identified. A further search for F420 biosynthesis gene homologs in genomic databases suggests the possible widespread presence of F420 biosynthesis gene clusters in proteobacterial genomes.
Properties of a CdZnO/ZnO Multiple Quantum-Well Light-Emitting Diode
Zhan-Hui Liu,Li-Li Zhang,Qing-Fang Li,Rong Zhang,Zi-Li Xie,Xiang-Qian Xiu,Bin Liu 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.69 No.7
A CdZnO/ZnO multiple quantum-well light-emitting diode (LED) structure was successfully grown by using plasma-assisted molecular beam epitaxy on a p-GaN template that had been grown by using metal-organic chemical-vapor deposition on a c-sapphire substrate. The properties of the sample were characterized by using high-resolution X-ray diffraction, transmission electron microscopy, and temperature-dependent photoluminescence measurements. The light output performance of the CdZnO/ZnO QW LED device was also investigated in detail by using I-V and electroluminescence spectral measurements. The characterization showed that our CdZnO/ZnO QW LED structure had good crystalline quality and weaker carrier localization. Owing to the heterojunction structure, the I-V curve indicated that the LED device had a higher turn-on voltage and series resistance. The EL measurement demonstrated that for our LED device’s optoelectronic characteristic, the carrier-screening effect played the dominant role in the emission-energy blue-shift mechanism, and the broadening of the emission energy width was mainly ascribed to the band-filling effect. Without a special heat sinking, the L-I curve exhibited slight efficiency droop after 30 mA.