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242 results on '"Hong, Gui-Bing"'

64. Photocatalytic Degradation of Indoor Air Pollutants by Pt- T i O 2

Author

Hong, Gui Bing and Ma, Chih Ming

Subjects
Article Subject
Abstract

Titanium dioxide (TiO2) has been extensively studied with regard to its application as the physical sunblock in sunscreen or other cosmetic products, as well as in environmental remediation processes. In this study, the Taguchi method was applied to determine the optimum gaseous DCM (dichloromethane) by Pt-TiO2 with different Pt contents. An orthogonal array (L32) experimental design that allows for the simultaneous investigation of the variations of six parameters (light source, catalyst type, initial concentration, retention time, photointensity, and relative humidity) was employed to determine the optimum levels. The value of photointensity was not at a confidence interval. According to the response values and an analysis of variance (ANOVA), an experimental result of 34.7 as the optimum condition is forecast. Although the predetermination of 34.7 is not equal to the experimental value, it is contained within the 90% confidence interval (25.8, 43.6).

Published
2012
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65. Characterization of pulmonary protein profiles in response to zinc oxide nanoparticles in mice: a 24-hour and 28-day follow-up study

Author

Pan,Chih-Hong, Chuang,Kai-Jen, Chen,Jen-Kun, Hsiao,Ta-Chih, Lai,Ching-Huang, Jones,Tim, BéruBé,Kelly, Hong,Gui-Bing, Ho,Kin-Fai, Chuang,Hsiao-Chi, Pan,Chih-Hong, Chuang,Kai-Jen, Chen,Jen-Kun, Hsiao,Ta-Chih, Lai,Ching-Huang, Jones,Tim, BéruBé,Kelly, Hong,Gui-Bing, Ho,Kin-Fai, and Chuang,Hsiao-Chi

Abstract

Chih-Hong Pan,1,2,* Kai-Jen Chuang,3,4,* Jen-Kun Chen,5 Ta-Chih Hsiao,6 Ching-Huang Lai,2 Tim P Jones,7 Kelly A BéruBé,8 Gui-Bing Hong,9 Kin-Fai Ho,10,11 Hsiao-Chi Chuang12,13 1Institute of Occupational Safety and Health, Council of Labor Affairs, Executive Yuan, 2School of Public Health, National Defense Medical Center, 3School of Public Health, College of Public Health and Nutrition, 4Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 5Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, 6Graduate Institute of Environmental Engineering, National Central University, Taoyuan, Taiwan; 7School of Earth and Ocean Sciences, 8School of Biosciences, Cardiff University, Cardiff, Wales, UK; 9Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan; 10Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, People’s Republic of China; 11Shenzhen Municipal Key Laboratory for Health Risk Analysis, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People’s Republic of China; 12School of Respiratory Therapy, College of Medicine, 13Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan *These authors contributed equally to this work Abstract: Although zinc oxide nanoparticles (ZnONPs) are recognized to cause systemic disorders, little is known about the mechanisms that underlie the time-dependent differences that occur after exposure. The objective of this study was to investigate the mechanistic differences at 24 hours and 28 days after the exposure of BALB/c mice to ZnONPs via intratracheal instillation. An isobaric tag for the relative and absolute quantitation coupled with liquid chromatography/tandem mass spectrometry was used to ide

Published
2015

69. Strategies for the utilization of alternative fuels in the cement industry.

Author

Hong, Gui-Bing, Huang, Chi-Feng, Lin, Hsin-Chiu, and Pan, Tze-Chin

Subjects
*CEMENT industries, *ALTERNATIVE fuels, *CARBON & the environment
Abstract

One of the most energy-intensive industries in Taiwan is the cement industry. With the increasing awareness of the need to reduce carbon emissions, the cement industry in Taiwan is under huge pressure to reduce its greenhouse gas emissions. The use of alternative fuels (AFs) is an option to reduce the use of fossil fuels and reduce greenhouse gas emissions. The objectives of this study are to review and analyze the experiences of using AFs in the cement industry in Germany and Japan. The contribution of AFs to total thermal energy demand in the cement industry of Germany reached 64.6% in 2015. In Japan, the contribution of AFs to total thermal energy demand reached 16.4% in 2014. The analysis of specific alternative fuels shows that the level of usage of AFs in one cement plant in Taiwan is less than that of Japan and much lower than that of Germany. This paper provides a comparison, barriers and recommendations for the use of AFs in the cement industry, particularly in Taiwan. [ABSTRACT FROM AUTHOR]

Published
2018
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70. Optimization of extraction process for bioactive compounds from Litsea cubeba fruits.

Author

Cheng, Chih-Lun and Hong, Gui-Bing

Abstract

Response surface methodology (RSM) was applied to evaluate the extraction of active compounds from Litsea cubeba fruits. A central composite design (CCD) with five levels and three process parameters (extraction temperature, extraction time and ethanol concentration) was used to investigate the influence of the extraction temperature, extraction time and ethanol concentration on the multiple response variables (TPC, DPPH and ABTS assays). The results of the ANOVA analysis show that the quadratic term of the ethanol concentration was significant for all the response variables. The quadratic model was highly significant ( P<0.05) for all the response variables. After optimizing for multi-response, the optimal conditions were determined as an extraction temperature of 42.3 ºC, extraction time of 126.4min and ethanol concentration of 51%. Moreover, the extract of Litsea cubeba fruit attested possessing tyrosinase inhibitory activity, with an IC value of 5,720 μg mL. The second-order kinetic model represented the kinetic data very well. In addition, the obtained values of the effective diffusivities were in the range of 2.28-5.83×10ms. [ABSTRACT FROM AUTHOR]

Published
2018
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74. Optimized extraction for active compounds in Glossogyne tenuifoliausing response surface methodology

Author

Yang, Jing-Xiang and Hong, Gui-Bing

Abstract

Glossogyne tenuifoliais a high economic value crop cultivated on Penghu Island, Taiwan. However, there is no extraction optimization of G. tenuifoliareported in the literature. Simplex lattice and central composite design of response surface methodology (RSM) were used in this study to investigate the extraction variables (solvent proportion, extraction temperature, the ratio of liquid to solid and pH) in the extraction of solvent from G. tenuifolia. The total phenolic content (TPC), total flavonoid content (TFC), total triterpenoid content (TTC) and antioxidant capacity of G. tenuifoliawere considered as the response variables, while the solvent proportion, extraction temperature, the ratio of liquid to solid (L/S) and the pH effect were considered for determining the optimal conditions. Quadratic models were used by the RSM optimization approach to obtain the optimal conditions and to predict the relative response variables. ANOVA analysis results exhibited a high coefficient of determination (R2) and adjusted-R2, which indicated that the quadratic models were adequate for the response variables. The results demonstrated that the extract of G. tenuifoliais a good source of antioxidant and has the potential to be applied in various industries.

Published
2019
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79. Moisture sorption isotherm characteristics and Taguchi analysis of rice bran extraction parameters.

Author

Chen, Hua‐Wei, Hong, Gui‐Bing, and Chen, Zong‐Jiang

Subjects
*DISTRIBUTION isotherms (Chromatography), *RICE bran, *EXTRACTION (Chemistry), *TAGUCHI methods, *ANTIOXIDANTS
Abstract

This work determined the moisture sorption isotherm of rice bran and investigated the effects of the pre-treatment method, solvent type, solid-liquid ratio and soaping temperature on extract yield, total phenolic content, 2,2-diphenyl-1-picrylhydrazyl radical-scavenging activity assay and 2,2′-azino-bis antioxidant capacity assay of rice bran extract. The Taguchi method and L9 (34) orthogonal array were employed in this study. The sorption isotherms of rice bran showed a sigmoidal pattern and displayed type II of van der Waals adsorption. Adsorption and desorption data on rice bran were best fitted using the Henderson model among the six models tested at three temperatures. The net isosteric heat of desorption was higher than the net isosteric heat of adsorption. Based on the analysis of the signal-to-noise ratio, solvent selection effected the largest contribution to the overall performance. Confirmation experiments showed that the optimal combination that contained the four quality attributes was appropriate (error margin <5%) and reproducible. © 2016 Curtin University of Technology and John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2017
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80. Moisture sorption isotherm characteristics of Hemerocallis Fulva and Cymbopogon.

Author

Ma, Chih‐Ming, Chen, Hua‐Wei, and Hong, Gui‐Bing

Subjects
MOISTURE, SORPTION, ATMOSPHERIC temperature, HEMEROCALLIS fulva, CYMBOPOGON
Abstract

The moisture sorption isotherms of Hemerocallis Fulva and Cymbopogon are measured by the static gravimetric method at 25, 35, and 45 °C over a water activity range of 0.09 to 0.95 using standard saturated salt solutions. The sorption isotherms of H. fulva and Cymbopogon display type III ( J-shaped) and type II (nearly sigmoid shapes) isotherms. In addition, the adsorption and desorption data of H. fulva and Cymbopogon fit well with the White & Eiring model and the Oswin model, respectively. The Brunauer-Emmett-Teller equation is applied to determine the monolayer moisture content, and the surface area of a monolayer was calculated. The values of the net isosteric heat of sorption are found to increase with decreases in the equilibrium moisture content. Moreover, the net isosteric heat of desorption is higher than that of the adsorption heat. Copyright © 2016 Curtin University of Technology and John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2016
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