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Chen Y.-T.,De Lin Institute of Technology
Journal of Marine Science and Technology | Year: 2010

This study utilizes silver nano-fluid filled flat heat pipe. It is aimed at effect of various concentrations on flat heat pipe thermal performance by air-cooling testing equipment. The particles used in these experiments were silver particles 35 nm in size. The base working fluid was pure-water. Nano-fluids were prepared using a two-step method. In the experiment, the thickness and length of the heat pipe are 3 mm and 200 cm, respectively. An experimental system was set up to measure the temperature distribution of heat pipes and calculate the thermal resistance by equation R = △TlQ. At a same charge volume, the thermal resistance of heat pipe filled nano-fluid was lower than DI water. Source


Yang N.-C.,Chung Shan Medical University | Jhou K.-Y.,National Chiayi University | Tseng C.-Y.,De Lin Institute of Technology
Food Chemistry | Year: 2012

We hypothesised that mulberry leaves (ML) exert their antihypertensive effect through γ-aminobutyric acid (GABA) and that the antihypertensive activity of ML extract would be comparable to GABA alone in spontaneously hypertensive rats (SHR). We found that single administration of a water extract from leaves of Morus alba L. (WEML) lowered systolic blood pressure (SBP) transiently in a dose-dependent manner. Interestingly, the SBP-lowering effect of WEML was significantly higher than after treatment with GABA alone. We further found that WEML strongly inhibited angiotensin I-converting enzyme (ACE) activity in vitro with an IC 50 value of 29.8 mg/ml. These results suggest that WEML has a transient antihypertensive effect in vivo that may involve a mechanism of ACE inhibition in addition to GABA. © 2011 Elsevier Ltd. All rights reserved. Source


Yeh K.,De Lin Institute of Technology
International Journal of Physical Sciences | Year: 2011

This study examines the feasibility of applying adaptive fuzzy sliding mode control (AFSMC) strategies to reduce the dynamic responses of buildings constructed using a lead rubber bearing (LRB) isolation hybrid protective system. Recently developed control devices for civil engineering structures, including hybrid systems and semi-active systems, have been found to have inherent nonlinear properties. It is thus necessary to develop non-linear control methods to deal with such properties. Generally, controller fuzziness increases the robustness of the control system 75 to counter uncertain system parameters and input excitation, and the non-linearity of the control rule increases the effectiveness of the controller relative to linear controllers. AFSMC is a combination of sliding mode control (SMC) and fuzzy control. The performance and robustness of these proposed control methods are all verified by numerical simulation. The results demonstrate the viability of the presented methods. The attractive control strategy derived there-from is applied to seismically excited buildings using LRB isolation. © 2011 Academic Journals. Source


Lee L.-W.,De Lin Institute of Technology
Expert Systems with Applications | Year: 2012

In this paper, we present a new method for group decision making with incomplete fuzzy preference relations based on the additive consistency and the order consistency. We estimate unknown preference values based on the additive consistency and then construct the consistency matrix which satisfies the additive consistency and the order consistency simultaneously for aggregation. The existing group decision making methods may not satisfy the order consistency for aggregation in some situations. The proposed method can overcome the drawback of the existing methods. It provides us with a useful way for group decision making with incomplete fuzzy preference relations based on the additive consistency and the order consistency. © 2012 Published by Elsevier Ltd. All rights reserved. Source


Chen S.-M.,National Taiwan University of Science and Technology | Lin T.-E.,National Taiwan University of Science and Technology | Lee L.-W.,De Lin Institute of Technology
Information Sciences | Year: 2014

In this paper, we present a new method for group decision making using incomplete fuzzy preference relations based on the additive consistency and the order consistency with consistency degrees to overcome the drawbacks of Lee's method [15], where Lee's method cannot obtain the correct preference order of alternatives in some situations. First, we estimate unknown preference values of incomplete fuzzy preference relations based on the additive consistency. Then, we construct modified consistency matrices of experts which satisfy the additive consistency and the order consistency simultaneously. We also prove some properties of the constructed modified consistency matrices. Finally, based on the constructed modified consistency matrices of experts, we present a new method for group decision making. The proposed method provides us with a useful way for group decision making using incomplete fuzzy preference relations based on the additive consistency and the order consistency with consistency degrees. © 2013 Elsevier Inc. All rights reserved. Source

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