Research on the Environmental Issues in China s Sustainable Economic Development

Zhao,Yue 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

During the past twenty years, China has developed rapidly in economy. Meanwhile China s economic development has brought great many problems. Sustainable development is to achieve coordination in the ecological, economic and social aspects. Among them, the environment and resource issues are the most critical issues which affecting sustainable development in China. With China s rapid economic development, China s ecological environment is facing the most serious threat in water pollution, air pollution, solid waste pollution and the destruction of forests and biodiversity, resulting in a significant loss of the national economy. This research aims to examine whether the tragedy of the commons has hindered the sustainable development of China s economy or not. On the other hand, we try to analyze a solution to improve this situation. In the case of a clear definition of property rights, the air will have a market price. The market price will coordinate pollutant emissions. The tragedy of commons has hindered the sustainable development. The model of China’s Economic development should be changed.

Effect of Au film and absorption groups on minority carrier life of porous silicon

Yue Zhao,Linjun Wang,Jiahua Min,Weimin Shi 한국물리학회 2010 Current Applied Physics Vol.10 No.3

In this paper, the samples were prepared with or without metal assistance in different time. The effect of Au film and absorption groups on minority carrier life of porous silicon was studied by using l-PCD measurements,and the result was further proved by FTIR spectra and SEM images. The results were showed that the existed hydrogen-related groups on the surface of porous silicon would decrease the minority carrier life and the grid Au film also can decrease the minority carrier life. The minority carrier life may be controlled by the more effective factor, metal elements or absorption groups.

Mineral carbonation of slate and red mud mixture

( Yue Zhao ),( Seon Won Rna ),( Ho Young Jo ) 대한지질공학회 2015 대한지질공학회 학술발표회논문집 Vol.2015 No.2

Mineral carbonation is a technology using materials having high content of alkaline earth elements (e.g., Ca and Mg) to sequester permanently CO2 as a form of carbonate minerals. Waste slate contains mainly cement and asbestos materials, which are sources of Ca and Mg, respectively. Red mud is bauxite residue after extracting aluminum from bauxite. Red mud is highly alkaline material because sodium hydroxide (NaOH) is added to extract aluminum from bauxite. The pH of the solution leached from red mud is approximately higher than 12. The purpose of this study is to evaluate the feasibility of using red mud as a pH control agent for aqueous mineral carbonation of waste slate. The leaching tests on waste slate and red mud using 1 M ammonium acetate (CH3COONH4) solution and deionized (DI) water, respectively, were conducted. In addition, direct and indirect carbonation tests on waste slate and red mud mixture were conducted. Ca was leached approximately 30% from the waste slate in the 1 M CH3COONH4 solution. pH of the solution leached from red mud using DI water was approximately 11, regardless of a red mud dosage. For the carbonation test on the waste slate and red mud mixture, approximately 98% of Ca was removed from the mixture after carbonation, suggesting that approximately 35% of the carbonation efficiency. The CaCO3 content of the reacted materials determined using results of thermogravimetric analysis (TGA) was approximately 22% ~ 39% higher than that of the unreacted materials. The results of this study suggest that red mud can be used as a pH control agent for aqueous mineral carbonation of waste slate using an acid solution as a solvent.

The Existence of a Putative Regulatory Element in 3'-UntranslatedRegion of Proto-oncogene HOX11’s mRNA

Zhao-Zhao Jiang,Wei-Jun Ma,Joseph JY Sung,Yue Li,Hai-Xu Chen,Wai-Keung Leung 한국생화학분자생물학회 2005 BMB Reports Vol.38 No.4

G Protein–Coupled Receptor 30 Mediates the Anticancer Effects Induced by Eicosapentaenoic Acid in Ovarian Cancer Cells

Yue Zhao,Meng-Fei Zhao,Mei-Lin Yang,Tian-Yu Wu,Cong-Jian Xu,Jing-Mei Wang,Chao-Jun Li,Xi Li 대한암학회 2020 Cancer Research and Treatment Vol.52 No.3

Purpose: While numerous epidemiological studies have indicated that omega-3 polyunsaturated fatty acids have anticancer properties in various cancers, the effects and mechanisms of eicosapentaenoic acid (EPA) in ovarian cancer cell growth are poorly understood. Materials and Methods: ES2 ovarian clear cell carcinoma cells and SKOV3 adenocarcinoma cells were treated with palmitic acid or EPA, followed by flow cytometry and cell counting to measure apoptosis and proliferation, respectively. A modified protein lipid overlay assay was used to further verify whether EPA was a ligand of G protein–coupled receptor 30 (GPR30) in ES2 cells. The levels of apoptosis-related genes, phosphorylated AKT, and phosphorylated ERK1/2 were detected to explore the underlying mechanism. Finally, inhibitory effect of EPA on tumor growth via GPR30 was determined in vitro and in vivo. Results: EPA suppressed ES2 ovarian clear cell carcinoma cells growth via GPR30, a novel EPA receptor, by inducing apoptosis. As a ligand of GPR30, EPA activated the GPR30-cAMP– protein kinase A signaling pathway. When GPR30 was suppressed by siRNA or its inhibitor G15, the antiproliferative action of EPA was impaired. Furthermore, EPA inhibited tumor growth by blocking the activation of AKT and ERK. In the mouse xenograft model, EPA decreased tumor volume and weight through GPR30 by blocking tumor cell proliferation. Conclusion: These results confirm that EPA is a tumor suppressor in human ovarian clear cell carcinoma cells and functions through a novel fatty acid receptor, GPR30, indicating a mechanistic linkage between omega-3 fatty acids and cancers.

MiR-182-5p Knockdown Targeting PTEN Inhibits Cell Proliferation and Invasion of Breast Cancer Cells

Yue-Sheng Zhao,Wei-Chao Yang,Hong-Wei Xin,Ji-Xia Han,Su-Gang Ma 연세대학교의과대학 2019 Yonsei medical journal Vol.60 No.2

Purpose: Breast cancer (BC) is one of the most common malignant tumors, affecting a significant number of women worldwide. MicroRNAs (miRNAs) have been reported to play important roles in tumorigenesis. The aim of this study was to determine theroles of miR-182-5p in BC progression. Materials and Methods: The expressions of miR-182-5p and phosphatase and tensin homolog deleted on chromosome 10(PTEN) were measured in BC tissues and cells by quantitative real-time polymerase chain reaction or Western blot. Cell proliferationand invasion were detected by cell counting kit-8 assay and trans-well assay, respectively. The interaction between miR-182-5p and PTEN was probed by bioinformatics analysis, luciferase activity, and RNA immunoprecipitation. A murine xenograftmodel was established to investigate the role of miR-182-5p in BC progression in vivo. Results: An abundance of miR-182-5p was noted in BC tissues and cells. High expression of miR-182-5p was associated with poorsurvival. Abrogation of miR-182-5p inhibited cell proliferation and invasion in BC cells. Interestingly, PTEN was indicated as atarget of miR-182-5p, and its restoration reversed miR-182-5p-mediated promotion of proliferation and invasion of BC cells. Moreover, depletion of miR-182-5p suppressed tumor growth via up-regulating PTEN expression in the murine xenograft model. Conclusion: MiR-182-5p exhaustion blocked cell proliferation and invasion by regulating PTEN expression, providing a noveltherapeutic avenue for treatment of BC.

Luminescence and photoconductivity properties of porous polycrystalline silicon

Yue Zhao,Dong-sheng Li,Jie Zhao,Wen-bin Sang,De-ren Yang,Min-hua Jiang 한국물리학회 2008 Current Applied Physics Vol.8 No.2

In recent years, the photoluminescence and the photoconductivity of porous silicon were comprehensively studied. But the photoluminescence and the photoconductivity of porous polycrystalline silicon have not been wholely studied. In this paper, the results showed that luminescent property of the samples prepared by poly-crystal silicon wafers may be related to the defects on Si complexes surface, which can be proved by microwave-detected photoconductivity decay measurements. Furthermore, the luminescence of samples was disappeared under the external illumination, which may be related to the elimination of luminescent-centers. In addition, the conductivities of the samples were dependent on etched time and current density, and the large porosity of samples led to isotropic photoconductivity, which may be related to the change of energy band structure of the devices. In recent years, the photoluminescence and the photoconductivity of porous silicon were comprehensively studied. But the photoluminescence and the photoconductivity of porous polycrystalline silicon have not been wholely studied. In this paper, the results showed that luminescent property of the samples prepared by poly-crystal silicon wafers may be related to the defects on Si complexes surface, which can be proved by microwave-detected photoconductivity decay measurements. Furthermore, the luminescence of samples was disappeared under the external illumination, which may be related to the elimination of luminescent-centers. In addition, the conductivities of the samples were dependent on etched time and current density, and the large porosity of samples led to isotropic photoconductivity, which may be related to the change of energy band structure of the devices.

The Existence of a Putative Regulatory Element in 3`-Untranslated Region of Proto-oncogene HOX11`s mRNA

Yue Li,Zhao Zhao Jiang,Hai Xu Chen,Wai Keung Leung,Joseph Jy Sung,Wei Jun Ma 한국생활환경학회 2005 BMB Reports Vol.38 No.4

The effect of Al and B on the luminescent property of porous silicon

Yue Zhao,Zhiyong Lv,Linjun Wang,Jiahua Min,Weimin Shia,Xudong Lu 한국물리학회 2010 Current Applied Physics Vol.10 No.3

In this paper, we studied the PL property and the surface morphology of porous silicon prepared from Ntype single silicon wafers coated with and without Al film. By introducing the Al film on the surface of silicon wafer before etching, the morphology of porous silicon exhibits obvious discrimination compared with that of the conventional porous silicon, which can be explained by the formation mechanism of the samples, and the emission property of two-type porous silicon also showed the clear difference, which may be attributed to the discrepancy in the structural configuration of the samples. Furthermore, it was found that the blue emission decreased and the green emission was almost completely quenched after boron-particle deposition, which is attributed to the structural change or annihilation of the emission defects during annealing process.

Size control of Co-doped ZnO rods by changing the solvent

Zhao, Jing,Yan, Xiaoqin,Lei, Yang,Zhao, Yanguang,Huang, Yunhua,Zhang, Yue Techno-Press 2012 Advances in materials research Vol.1 No.1

In this work, the Co-doped ZnO rods were prepared by the hydrothermal method. The size of these rods can be changed from micro-size to nano-size by using different solutions during the preparation. The results of transmission electron microscopy (TEM) and selected area electron diffraction (SAED) showed that the as-prepared nano-sized Co-doped rods have single-crystal structure. The polarized Raman experiments were presented on an individual micro-sized Co-doped ZnO rod in the $X(YY)\vec{X}$, $X(ZY)\vec{X}$ and $X(ZZ)\vec{X}$ configurations, the results of polarized Raman indicated that these rods are crystallized and their growth direction is parallel to c-axis.