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Ouyang, Huei-Tau,Chen, Kue-Hong,Tsai, Chi-Ming The Society of Naval Architects of Korea 2015 International Journal of Naval Architecture and Oc Vol.7 No.6
The water wave characteristics of Bragg reflections from a train of fixed floating pontoon breakwaters was studied numerically. A numerical model of boundary discretization type was developed to calculate the wave field. The model was verified by comparing to analytical data in literature and good agreements were achieved. Series of parametric studies were conducted systematically to investigate the dependence of the reflected coefficients by the Bragg scattering on the design variables, including the spacing between the breakwaters, the total number of installed breakwaters, the draft and width do the breakwater, and wave length. Certain wave characteristics of the Bragg reflections were observed and discussed in details which might be of help for practical engineering applications in shoreline protection from incident waves.
Huei-Tau Ouyang,Kue-Hong Chen,Chi-Ming Tsai 대한조선학회 2015 International Journal of Naval Architecture and Oc Vol.7 No.6
The water wave characteristics of Bragg reflections from a train of fixed floating pontoon breakwaters was studied numerically. A numerical model of boundary discretization type was developed to calculate the wave field. The model was verified by comparing to analytical data in literature and good agreements were achieved. Series of parametric studies were conducted systematically to investigate the dependence of the reflected coefficients by the Bragg scattering on the design variables, including the spacing between the breakwaters, the total number of installed breakwaters, the draft and width do the breakwater, and wave length. Certain wave characteristics of the Bragg reflections were observed and discussed in details which might be of help for practical engineering applications in shoreline protection from incident waves.
Inpatients' Knowledge about Primary Liver Cancer and Hepatitis
He, Wen-Jing,Xu, Ming-Yan,Xu, Rui-Rui,Zhou, Xiao-Qiong,Ouyang, Jun-Jie,Han, Hui,Chen, Geng-Zhen Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.8
Objective: To assess the level of an inpatient population's awareness about hepatitis and primary liver cancer (PLC), the most common type of which is hepatocellular carcinoma (HCC), and then to initiate education of this group. Methods: A survey was conducted with 1300 participants within the inpatient unit in representative tertiary hospitals in the Chaoshan area of China. Structured questionnaires contained demographic data and statements about different aspects of liver cancer and hepatitis. The questionnaires were completed by trained medical practitioners after they had conducted the interviews. Results: One way ANOVA showed that the sample population lacked adequate knowledge about HCC and hepatitis. Stepwise multiple regression analysis demonstrated that the participant's level of education had the greatest impact on their total knowledge score when other variables remained constant. Conclusions: The study demonstrated: a general lack of awareness amongst the participants about the preventative strategies, and the management options available for people with primary liver cancer and hepatitis; education level was an important factor affecting knowledge levels. The demonstrated deficiencies in people's knowledge about hepatitis and HCC, and their lack of subsequent protective behaviours are likely to play an important role in HCC and hepatitis transmission or prevention.
A MODEL OF INTERMARRIAGE INVOLVING ATTRIBUTE EXCHANGE
Li, Shaomin,Jow-Ching Tu, Edward,Ouyang, Ming 연세대학교 동서문제연구원 2002 Global economic review Vol.31 No.3
The increasing pace of globalization has significantly affected our lives in many profound ways. One of the consequences of globalization is the rise of intermarriage, i.e., the marriage between couples of different nationalities or different social, economic, religious, or racial backgrounds. Since our understanding of intermarriage is limited, this paper attempts to shed lights on intermarriage by developing a formal model based on attribute exchange. After examining the motivation and micro and macro consequences of intermarriages, our model shows that different value systems regarding marital attributes among different groups drive individuals with attributes valued lower in their group to seek intermarriage. As a result, the essence of intermarriages is the movement of attributes from groups in which such attributes are relatively abundant to groups where the same attributes are relatively scarce. Thus, intermarriage makes individuals with attributes valued lower in their original groups better off. At the inter-societal (or inter-group) level, the equilibrium of intermarriage is determined by the relative scarcity of marital attributes in different groups (societies). In the long run, intermarriages converge different groups in terms of their value systems regarding marriage.
A MODEL OF INTERMARRIAGE INVOLVINGATTRIBUTE EXCHANGE
Shaomin Li,Edward Jow-Ching Tu,Ming Ouyang 연세대학교 동서문제연구원 2002 Global economic review Vol.31 No.3
The increasing pace of globalization has significantly affected our lives in many profound ways. One of the consequences of globalization is the rise of intermarriage, i.e., the marriage between couples of different nationalities or different social, economic, religious, or racial backgrounds. Since our understanding of intermarriage is limited, this paper attempts to shed lights on intermarriage by developing a formal model based on attribute exchange. After examining the motivation and micro and macro consequences of intermarriages, our model shows that different value systems regarding marital attributes among different groups drive individuals with attributes valued lower in their group to seek intermarriage. As a result, the essence of intermarriages is the movement of attributes from groups in which such attributes are relatively abundant to groups where the same attributes are relatively scarce. Thus, intermarriage makes individuals with attributes valued lower in their original groups better off. At the inter-societal (or inter-group) level, the equilibrium of intermarriage is determined by the relative scarcity of marital attributes in different groups (societies). In the long run, intermarriages converge different groups in terms of their value systems regarding marriage.
Effect of heat treatment on the crystallization toughening of tailing-derived glass-ceramics
Du Yongsheng,Yang Xiaowei,Zhang Hongxia,Zhang Xuefeng,Zhao Ming,Chen Hua,Ouyang Shunli,Li Baowei 한양대학교 세라믹연구소 2016 Journal of Ceramic Processing Research Vol.17 No.12
The effect of heat treatment to a parent glass of the composition CaO-MgO-Al2O3-SiO2 (CMAS) on the course ofcrystallization and properties of the Bayan Obo east mine tailing glass-ceramics is examined. The crystallization behavior,phase composition, morphology and structure of glass-ceramics are characterized. The results indicate that the phases formedin the glass-ceramics are augite and the initial nucleation phases are magnetite, which can be proved by differential scanningcalorimetry (DSC), X-ray diffraction (XRD) and scanning transmission electron microscope (STEM). Heat treatment plays asignificant role in improving the crystallization process, fracture characteristics, modulus and bending strength. All of theseproperties reach a maximum for the fully crystallized glass-ceramic. Scanning electron microscope (SEM) and atomic forcemicroscope (AFM) are used to reveal the topography of the fracture surfaces. The intergranular fracture can be observed onthe fracture surface.
Jia-Lin Song,Wei Zheng,Wei Chen,Yun Qian,Yuan-Ming Ouyang,Cun-Yi Fan 생화학분자생물학회 2017 Experimental and molecular medicine Vol.49 No.-
Our study aims to explore the effects of lentivirus-mediated microRNA-124 (miR-124) gene-modified bone marrow mesenchymal stem cell (BMSC) transplantation on the repair of spinal cord injury (SCI) in rats. BMSCs were isolated from the bone marrow of rats. The target gene miR-124 was identified using a luciferase-reporter gene assay. Seventy-two rats were selected for construction of the SCI model, and the rats were randomly divided into the blank group, sham group, SCI group, negative control (NC) group, overexpressed miR-124 group and si-PDXK group. The mRNA expression of miR-124 and the mRNA and protein expression of pyridoxal kinase (PDXK) were detected by quantitative real-time polymerase chain reaction and western blotting. The locomotor capacity of the rats was evaluated using the Basso, Beattie and Bresnahan (BBB) scale. Brdu, neuron-specific enolase (NSE), neurofilament (NF) and microtubule-associated protein 2 (MAP2) were detected using immunohistochemistry. The expression levels of thyrotropin-releasing hormone (TRH), prostacyclin (PGI2) and gangliosides (GM) were measured using an enzyme-linked immunosorbent assay. PDXK was identified as the target gene of miR-124. The overexpressed miR-124 group exhibited higher miR-124 expression than the SCI, NC and si-PDXK groups. Compared with the SCI and NC groups, the PDXK expression was downregulated in the overexpressed miR-124 and si-PDXK groups, and the BBB scores were significantly increased 7, 21 and 35 days after transplantation. The double-labeled positive cell densities (Brdu+NSE/NF/MAP2) and the expression levels of TRH, PGI2 and GM in the overexpressed miR-124 group were significantly higher than those in the NC and SCI groups. These results indicated that miR-124 targeted PDXK to accelerate the differentiation of BMSCs into neurocytes and promote SCI repair.
Guangyu Wang,Yongsheng Du,Jie Ma,Hongxia Zhang,Shunli Ouyang,Leibo Deng,Hua Chen,Ming Zhao 한양대학교 세라믹연구소 2021 Journal of Ceramic Processing Research Vol.22 No.6
CaO-MgO-Al2O3-SiO2 glass-ceramics were successfully prepared using Baotou Steel BFS as the raw materials, choosing Fe2O3and Cr2O3 as nucleating agents. This paper focused on analyzing the combined effect of Fe2O3 and Cr2O3 on the structure andproperties of the glass-ceramics. Experimental results showed that the crystallization mechanism of glass-ceramics convertedsurface crystallization into bulk crystallization and the main crystalline phase of glass-ceramics changed gradually from augiteto diopside with the decrease of Fe2O3/Cr2O3 ratios. Therefore, an appropriate ratio of Fe2O3/Cr2O3 can act as nuclei forcrystallization of augite with integrated interlocking crystal structure and the physicochemical properties of glass-ceramic canbe improved. Consequently, the fracture mode of glass-ceramic was changed from intercrystalline to mixed transcrystalline/intercrystalline and therefore the average crack length can be shortened. Glass-ceramic with Fe2O3/Cr2O3 ratio of 1 had a highbending strength of 138.93 MPa, Vickers hardness of 7.51 GPa and acid resistance of 97.75%.