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Ho C.Y.,Hwa Hsia University of Technology | Tsai Y.H.,Hwa Hsia University of Technology | Lee Y.C.,National Taitung Junior College
Applied System Innovation - Proceedings of the International Conference on Applied System Innovation, ICASI 2015 | Year: 2016

This paper investigates the thermal characteristics of region surrounding laser welding keyhole. The thermal characteristics of region surrounding laser welding keyhole play an important role on the mechanical properties after welding. The welding keyhole produced by laser welding is assumed to be a paraboloid of revolution. The laser beam with Gaussian distribution of intensity irradiates on the keyhole. Considering the phase change at solid-liquid interface, this study utilized the finite difference method to numerically calculate the thermal fields in the solid and liquid region surrounding laser welding keyhole. © 2016 Taylor & Francis Group, London.


Cheng T.C.,National Pingtung University of Science and Technology | Yao K.S.,National Taitung Junior College | Yeh N.,MingDao University | Chang C.I.,Taiwanese Fisheries Research Institute | And 2 more authors.
Thin Solid Films | Year: 2011

This study uses blue LED light (λmax = 475 nm) activated TiO2/Fe3O4 particles to evaluate the particles' photocatalytic activity efficiency and bactericidal effects in seawater of variable salinities. Different TiO2 to Fe3O4 mole ratios have been synthesized using sol-gel method. The synthesized particles contain mainly anatase TiO2, Fe3O4 and FeTiO3. The study has identified TiO2/Fe 3O4's bactericidal effect to marine fish pathogen (Photobacterium damselae subsp. piscicida BCRC17065) in seawater. The SEM photo reveals the surface destruction in bacteria incubated with blue LED irradiated TiO2/Fe3O4. The result of this study indicates that 1) TiO2/Fe3O4 acquires photocatalytic activities in both the freshwater and the seawater via blue LED irradiation, 2) higher photocatalytic activities appear in solutions of higher TiO 2/Fe3O4 mole ratio, and 3) photocatalytic activity decreases as salinity increases. These results suggest that the energy saving blue LED light is a feasible light source to activate TiO 2/Fe3O4 photocatalytic activities in both freshwater and seawater. Copyright © 2011 Published by Elsevier B.V. All rights reserved.


Wang L.-C.,National Taitung Junior College | Wang L.-C.,Fu Jen Catholic University | Wang S.-E.,National Taitung University | Wang J.-J.,Fooyin University | And 4 more authors.
Applied Microbiology and Biotechnology | Year: 2012

Antrodia camphorata is a particular and precious medicinal mushroom, and its fruiting body was found to provide more efficient protection from oxidative stress and inflammation than its mycelium because of its higher content of triterpenoids, total phenols, and so on. In the previous in vitro studies, the mycelium of A. camphorata is proven to provide strong neuroprotection in neuron cells and suggested to have the potential of protection against neurotoxicity of amyloid β-protein (Aβ) known as the risk factor toward Alzheimer's disease (AD) development. However, the in vivo study and the comparison study with the fruiting body have not yet been investigated. This study compared the effect of the fruiting body and mycelium of A. camphorata on alleviating the Aβ40-induced neurocytotoxicity in the in vitro Aβ-damaged neuron cell model (PC-12 cell treated with Aβ40) and memory impairment in the in vivo AD animal model induced with a continuous brain infusion of Aβ40. In the results of in vitro and in vivo studies, the fruiting body possessed stronger anti-oxidative and antiinflammatory abilities for inhibiting neurocytotoxicity in Aβ40-treated PC-12 cells and Aβ40 accumulation in Aβ40-infused brain than mycelium. Moreover, hyperphosphorylated tau (p-tau) protein expression, known as an important AD risk factor, was suppressed by the treatment of fruiting body rather than that of mycelium in the in vitro and in vivo studies. These comparisons supported the reasons why the fruiting body resulted in a more significant improvement effect on working memory ability than mycelium in the AD rats. © Springer-Verlag 2012.


Wang L.-C.,National Taitung Junior College | Wang L.-C.,Fu Jen Catholic University | Kuo I.-U.,National Taitung University | Tsai T.-Y.,Fu Jen Catholic University | Lee C.-L.,National Taitung University
Applied Microbiology and Biotechnology | Year: 2013

Antrodia camphorata is a unique fungus in Taiwan; the submerged fermentation product is used as the functional food for liver protection. Deep ocean water (DOW) containing rich metals and trace elements is proven to stimulate the production of functional metabolites and health function of functional fungus product in our previous study. Therefore, A. camphorata-fermented product cultured in DOW (DOW-AC) or reverse osmosis water (ROW-AC) as culture water was daily fed thioacetamide (TAA)-induced fibrosis rat for 8 weeks in order to investigate whether DOW promoted the effect of A. camphorata-fermented product on the prevention against TAA-induced liver damage and fibrosis. In the results, feeding one dose of DOW-AC prevented from TAA-induced weight loss and had more effect on inhibiting lipid peroxidation, reactive oxygen species, iNOS, and TNF-α expression than one dose of ROW-AC. Furthermore, DOW-AC also had more potent effect on protection against TAA-induced liver damage and fibrosis according to the results of H&E stain and collagen stain. However, higher liver protection of DOW-AC should be due to the fact that DOW not only increased the production of A. camphorata-fermented functional metabolites including triterpenoids, polysaccharides, flavonoids, and polyphenols but also contributed to protection against TAA-induced damage and fibrosis. © 2013 Springer-Verlag Berlin Heidelberg.


Chen T.R.,National Taiwan University | Wei Q.K.,National Taitung Junior College | Chi Z.X.,National Taiwan University
African Journal of Microbiology Research | Year: 2011

The study determined bacterial population, pH value, oligosaccharides and isoflavone in defatted soy meal fermented by Lactobacillus paracasei and Bifidobacterium longum at 37°C for 48 h. B. longum and L. paracasei fermented in defatted soy meal has significantly increased the maximum bacterial population over 9.6 log CFU/h and reduced pH to 4.9. Furthermore, content of oligosaccharides, including sucrose, raffinose and stachyose, in FDSM were significantly reduced by L. paracasei (97.7, 98.3 and 98.5%) and B. longum (98.0, 97.5 and 86.3%, P<0.05). Isoflavone aglycones concentration was significantly increased to 60% for B. longum and was higher than 52% for L. paracasei (P<0.05). Daidzein and genistein increased concentration to 28-folds and 14.4 to 15.6-folds, respectively, compared to unfermented defatted soy meal. ©2011 Academic Journals.


Chang Y.-P.,Fooyin University | Liu C.-H.,National Pingtung University of Science and Technology | Wu C.-C.,Chang Jung Christian University | Chiang C.-M.,National Taitung Junior College | And 2 more authors.
Fish and Shellfish Immunology | Year: 2012

Zingerone, one of the active components of ginger, is a phenolic alkanone with antioxidant and anti-inflammatory properties. The effects of zingerone supplementation on the growth, immunity, and disease resistance of Pacific white shrimp (Litopenaeus vannamei) juveniles were studied. Four experimental diets, including a control diet (without zingerone enrichment) and 1, 2.5, and 5mg zingerone (kg diet) -1 were used. After 56 days of culture, shrimp fed diets supplemented with 1, 2.5, and 5mg zingerone (kg diet) -1 had significantly greater weight gain and feed efficiency than the controls. Furthermore, after 56 days of culture, shrimp fed all doses of the zingerone diet had higher survival rates compared to the controls after 24-72h of challenge by the pathogen, Vibrio alginolyticus. Significantly increased phenoloxidase levels were found in shrimp fed the zingerone diets at all doses, and respiratory bursts, lysozyme and phagocytic activities of shrimp fed 2.5 and 5mg zingerone (kg diet) -1 also significantly increased. Neither the total hemocyte count nor superoxide dismutase activity of the experimental and control groups revealed significant differences at any dose. The results indicate that zingerone can be recommended as a supplement to shrimp feed to increase growth, immunity, and disease resistance against the pathogen, V.alginolyticus. Use of zingerone as appetizer and immunostimulant in shrimp is promising. © 2011 Elsevier Ltd.


Hsu J.J.,National Taitung Junior College | Huang I.-B.,National formosa University | Hwang C.-C.,MingDao University | Wu M.C.,National Pingtung University of Science and Technology
Indian Journal of Chemical Technology | Year: 2011

The chromatographic behaviors of sulfachloropyridazine (SCP) and sulfadiazine (SDA) have been studied by HPLC with molecularly imprinted polymer (MIP) as the stationary phases. Molecularly imprinted polymer with SCP as template and an aqueous sodium dihydrogenphosphate buffer solution/acetonitrile (3:2, v/v) as mobile phase were found to be the best chromatographic system for achieving important separations of SCP and SDA from their mixtures. In order to compare the chromatographic data from the stationary phase, separation factors (α) were given. The values of α were 1.86 and 1.67 showed that the MIPs were able to recognize structurally subtle differences from the template molecule. The binding results from SCP and SDA solution performed by SCP-MIP showed specific binding towards SCP rather than SDA on the host-guest system. The values of capacity factor for SCP were measured and experimental results were further used for simulation to obtain the binding isotherms. The principal advantage of this method is that SCP-MIP can recognize SCP and SDA.


Li D.-C.,National Cheng Kung University | Chang F.M.,National Taitung Junior College | Chen K.-C.,United Microelectronics
Expert Systems with Applications | Year: 2010

Early in the process of developing a new product, on hand data is usually scarce and it is hard to assess product reliability. Many previous studies thus assume prior product failure distribution in the area of reliability estimation. However, when real data distribution is different from the assumed one, the reliability estimation accuracy is biased. This paper proposed a modeling method with four steps to build a reliability growth model for new products without assuming prior distribution. A sequential test procedure and the Bayesian theorem are mainly employed in the method presented. The results indicate that the proposed method can successfully build a reliability growth model for new products. © 2009 Elsevier Ltd. All rights reserved.


Li D.-C.,National Cheng Kung University | Chang F.M.,National Taitung Junior College | Chang S.-C.,National Cheng Kung University
International Journal of Production Research | Year: 2010

The pigment industry provides a wide range of products with small lots to its customers so the strategy is for mass-customisation. In this study, six factors are proposed and analysed to explore their influence on the customisation level. A regression analysis is conducted for the relationship between the six affecting factors and the level of mass-customisation. Data from a real pigment company in Taiwan is used as a case study. The results indicate that all the proposed factors, return of investment of inventory, inventory turnover, capacity efficiency, capacity utilisation, rate of delivery on time, and time for finishing a unit of a job, statistically affect the mass-customisation level in the pigment company. A company can decide its mass-customisation level according to the proposed relationship model of affecting factors. © 2010 Taylor & Francis.


Hsu C.-H.,National Taitung Junior College | Tsai W.-C.,Fo Guang University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2015

As the promotion of cultural and creative industries has become a trend in the current economic development strategies of various countries, the global market has gradually moved its focus towards local styles, and creative design applications have become a global competitive advantage of an industry. Therefore, the main purpose of this study is to investigate the effectiveness evaluation index and design strategy on cultural and creative products of consumer cognition and preference. First, we undertook a preliminary survey by means of literature review and opinions from a group of experts, and selected representative product samples and evaluation indices. Afterward, we analyzed the results of the questionnaire survey and found that cultural and creative products have distinct identity for participants. Furthermore, the participants considered that the main attributes affecting the overall presentation of a product, in order of degree of influence were “material, product function, aesthetic image, design quality, appearance style”. © Springer International Publishing Switzerland 2015.

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