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Kuo C.-W.,National University of Tainan | Shen Y.-H.,National University of Tainan | Wen S.-B.,Meiho Institute of Technology | Lee H.-E.,Kaohsiung Medical University | And 3 more authors.
Ceramics International | Year: 2011

A crystalline nanopowder of 3 mol% yttria-partially stabilized zirconia (3Y-PSZ) has been synthesized using ZrOCl2 and Y(NO3) 3 as raw materials throughout a co-precipitation process in an alcohol-water solution. The phase transformation kinetics of the 3Y-PSZ freeze dried precursor powders have been investigated by nonisothermal methods. Differential thermal and thermogravimetric analyses (DTA/TG), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high resolution TEM (HRTEM) have been utilized to characterize the 3Y-PSZ nanocrystallites. When the 3Y-PSZ freeze dried powders are calcined in the range of 703-1073 K for 2 h, the crystal structure is composed of tetragonal and monoclinic ZrO2. The BET specific surface area of the 3Y-PSZ freeze dried precursor powders calcined at 703 K for 2 h is 118.42 m 2/g, which is equivalent to a crystallite size of 8.14 nm. The activation energy from tetragonal ZrO2 converted to monoclinic ZrO2 in the 3Y-PSZ freeze dried precursor powders was determined as 401.89 kJ/mol. The tetragonal (T) and monoclinic (M) ZrO2 phases coexist with a spherical morphology, and based on TEM examination have a size distribution between 10 and 20 nm. When sintering green compacts of the 3Y-PSZ, a significant linear shrinkage of 8% is observed at about 1283 K. On sintering the densification cycle is complete at approximately 1623 K when a total shrinkage of 32% is observed and a final density above 99% of theoretical was achieved. © 2010 Elsevier Ltd and Techna Group S.r.l. Source


Lo W.-S.,Meiho Institute of Technology
World Transactions on Engineering and Technology Education | Year: 2010

In this article, the concept of ontological engineering has been used to consider what tasks should be undertaken before building an engineering education e-Learning system. Building the complete contents before users or learners start learning via a website in a network community is difficult for the system designer. Managers and designers rarely consider building a suitable ontology before teaching the material that has been uploaded to the e-Learning system. Even if there is an excellent e-Learning system website, this will not automatically mean good learning results for learners using an online e-Learning environment. Consideration of the problem is made in this article by integrating the input-process-output concept into the system design phase, and uses an ontological engineering approach to build common domain knowledge before undertaking system design and development for an engineering education e-Learning system. © 2010 WIETE. Source


Chen C.-H.,Digestive Disease Center | Chen C.-H.,Meiho Institute of Technology | Nien C.-K.,Show Chwan Memorial Hospital | Yang C.-C.,Digestive Disease Center | Yeh Y.-H.,Digestive Disease Center
Digestive Diseases and Sciences | Year: 2010

Background: Both nonalcoholic fatty liver disease (NAFLD) and coronary artery disease (CAD) are closely related to many metabolic disorders. Multislice computed tomography (MSCT) is a reliable noninvasive method in demonstrating coronary plaque. However, the association between coronary artery calcium (CAC) score and NAFLD remains controversial. Aims: The aim of this study is to evaluate the association between CAC score and NAFLD. Methods: This retrospective study enrolled 295 consecutive asymptomatic subjects who had both coronary angiography by MSCT and hepatobiliary imaging during self-paid physical check-ups. Results: NAFLD was found in 41% of the enrolled 295 subjects; gall bladder stones were found in 10.8%, and CAC > 100 with moderate-high risk of CAD was found in 12.9% of subjects. Male gender (odds ratios (OR), 3.087; 95% confidence intervals (CI), 1.092-8.729), increased age (OR, 1.108; 95% CI, 1.067-1.151), diabetes mellitus (DM) (OR, 2.968; 95% CI, 1.129-7.803), and NAFLD (OR, 2.462; 95% CI, 1.065-5.691) were the independent factors that increased the risk of CAC > 100 in binary logistic regression. The prevalence of NAFLD also increased with the severity of CAC score (≤100, 38.1%; 101-400, 58.3%; >400, 64.3%; P = 0.03). Conclusions: Besides the traditional risk factors, such as male gender, increased age, and DM, NAFLD was also associated with moderate to high risk of CAD (CAC > 100). © 2009 Springer Science+Business Media, LLC. Source


Shu B.-C.,National Cheng Kung University | Lung F.-W.,Kaohsiung Armed Forces General Hospital | Lung F.-W.,Kaohsiung Medical University | Lung F.-W.,National Defense Medical Center | And 2 more authors.
BMC Psychiatry | Year: 2011

Background: The aim of this study was to investigate the mental health status, and the risk factors associated with mild psychiatric disorders, of female foreign spouses (from Vietnam, Indonesia, and mainland China) in southern Taiwan, and to understand the mental health needs of these women.Methods: One hundred and twenty nine participants were willing to participate in this study. All participants fulfilled all questionnaires which included demographic information, the Chinese Health Questionnaire (CHQ), the Eysenck Personality Questionnaire (EPQ), and the Mental Health Care Needs Questionnaire (MHCNQ).Results: By multiple linear regression, neuroticism characteristics (p = 0.000), the dimension of knowledge of the level of their own psychological disturbance (p = 0.001), dimension of friends assistance (p = 0.033), and dimension of religion comfort (p = 0.041) in mental health care needs could be used to predict possible mild psychiatric disorders. Furthermore, SEM model showed that Indonesian or Vietnamese spouses have more likely degree in mental health care needs (β = -0.24, p = 0.003), compared with Chinese ones. A higher level of neuroticism was associated with a greater likelihood of mild psychiatric disorder (β = 0.54, p < 0.001), and of mental health care needs (β = 0.21, p = 0.013). A higher degree of mental health care needs was related to a greater likelihood of mild psychiatric disorder (β = 0.14, p = 0.05).Conclusion: In conclusion, we have obtained a better understanding of the mental health status of female foreign spouses in transnational marriages, who face many difficulties. Indonesian or Vietnamese spouses tend to more likely degree in mental health care needs than Chinese spouses, and then indirectly influenced their mental health status. Some individuals with a neurotic personality are exposed to high risk and might suffer from mild psychiatric symptoms. The needs for psychological counseling and religion therapy were the first priority for these women, particularly the Indonesian and Vietnamese spouses. From these findings, we have a better understanding of how to assist these female foreign spouses in future. © 2011 Shu et al; licensee BioMed Central Ltd. Source


Lin T.-C.,Meiho Institute of Technology | Pan P.-T.,National Cheng Kung University | Cheng S.-S.,National Cheng Kung University
Journal of Hazardous Materials | Year: 2010

An innovative bioprocess method, Systematic Environmental Molecular Bioremediation Technology (SEMBT) that combines bioaugmentation and biostimulation with a molecular monitoring microarray biochip, was developed as an integrated bioremediation technology to treat S- and T-series biopiles by using the landfarming operation and reseeding process to enhance the bioremediation efficiency. After 28 days of the bioremediation process, diesel oil (TPHC10-C28) and fuel oil (TPHC10-C40) were degraded up to approximately 70% and 63% respectively in the S-series biopiles. When the bioaugmentation and biostimulation were applied in the beginning of bioremediation, the microbial concentration increased from approximately 105 to 106 CFU/g dry soil along with the TPH biodegradation. Analysis of microbial diversity in the contaminated soils by microarray biochips revealed that Acinetobacter sp. and Pseudomonas aeruginosa were the predominant groups in indigenous consortia, while the augmented consortia were Gordonia alkanivorans and Rhodococcus erythropolis in both series of biopiles during bioremediation. Microbial respiration as influenced by the microbial activity reflected directly the active microbial population and indirectly the biodegradation of TPH. Field experimental results showed that the residual TPH concentration in the complex biopile was reduced to less than 500 mg TPH/kg dry soil. The above results demonstrated that the SEMBT technology is a feasible alternative to bioremediate the oil-contaminated soil. Crown Copyright © 2009. Source

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