Chung-Wei Chang

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This study describes the use of 11-mercaptoundecanoic acid-capped gold nanoparticles (MUA-AuNPs) for selective extraction of melamine prior to analysis by capillary electrophoresis with UV detection. The highest degree of melamine-induced aggregation of MUA-AuNPs was found to occur at pH 5.0, indicating that the NP aggregation is mainly because of hydrogen(More)
This study describes the use of Tween 20-capped gold nanoparticles (Tween 20-AuNPs) for the selective extraction and enrichment of five aminothiols, including glutathione, gamma-glutamylcysteine, cysteine, homocysteine, and cysteineglycine, prior to analysis by capillary electrophoresis with UV detection. Tween 20-AuNPs are capable of extracting aminothiols(More)
This study reports a simple colorimetric method for the sensitive detection of S-adenosylhomocysteine hydrolase (SAHH) activity and inhibition using fluorosurfactant-capped gold nanoparticles (FSN-AuNPs). FSN stabilizes the AuNPs against conditions of high ionic strength, and FSN-AuNPs are merely aggregated in the presence of homocysteine (HCys) and(More)
The aim of the current study is to propose a system, which can automatically deduce entailment relations of textual pairs. The system mainly uses seven features and a decision tree is utilized as a prediction model of the system and seven features of textual pairs are employed to be input of the prediction model. The experimental results for dataset(More)
This study reports the development of a simple, sensitive, and selective-detection system for homocysteine (HCys) based on the combination of fluorosurfactant-capped gold nanoparticles (FSN-AuNPs) and o-Phthaldialdehyde (OPA). The proposed assay utilizes FSN-AuNPs as extractors for HCys and cysteine (Cys), which can then be collected by centrifugation. As(More)
This study develops an antenatal care information system to assist women during pregnancy. We designed and implemented the system as both a web-based service and a multi-platform application for smartphones and tablets. The proposed system has three novel features: (1) web-based maternity records, which contains concise explanations of various antenatal(More)
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