Search results for: Yu-Ling Wei

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article

Effect of calcium compounds on lightweight aggregates prepared by firing a mixture of coal fly ash and waste glass

Yu-Ling Wei, Shao-Hsian Cheng, Kun-Tein Ou, Po-Jan Kuo, more

Ceramics International > 2017 > 43 > 17 > 15573- 15579

Mixtures of coal fly ash and waste glass are amended with three calcium compounds, pressed into green pellets, and fired to prepare lightweight aggregates at 1050–1175°C. The aggregate particle density, being associated with microstructure, depends on both firing temperature and calcium species. Calcite and gypsum are found to be good flux promoters. In contrast, calcium chloride is an ineffective...

article

Recycling steel wastewater sludges as raw materials for preparing lightweight aggregates

Yu-Ling Wei, Guan-Wei Ko

Journal of Cleaner Production > 2017 > 165 > C > 905-916

The cost for treatment and disposal of hazardous stainless steel sludges has been soaring up recently in Taiwan, becoming a great concern for steel industry. Thus most steel plants have piled up the wastes on-site to await cost-effective recycling/disposal means. Two steel sludges with similar ternary component (silicon oxide, alumina, and flux) compositions, but considerably different particle size...

article

A Rhodamine-based fluorescent sensor for chromium ions and its application in bioimaging

Xue-Mei Li, Rui-Rui Zhao, Yan Yang, Xue Wei Lv, more

Chinese Chemical Letters > 2017 > 28 > 6 > 1258-1261

A rhodamine-based sensor (1) has been developed for the detection of chromium ions. Cr³⁺-induced opening of the rhodamine spirocycle in sensor (1) led to the distinct colorimetric and fluorescence responses. Among all the tested ions, only Cr³⁺ generated a significant fluorescence enhancement of up to 13-fold, which indicated the high selectivity of 1. Sensor (1) was successfully applied in the in...

article

Microbiota-activated CD103⁺ DCs stemming from microbiota adaptation specifically drive γδT17 proliferation and activation

Chris Fleming, Yihua Cai, Xuan Sun, Venkatakrishna R. Jala, more

Microbiome > 2017 > 5 > 1 > 1-15

Background IL-17-producing γδT cells (γδT17) promote autoinflammatory diseases and cancers. Yet, γδT17 peripheral regulation has not been thoroughly explored especially in the context of microbiota-host interaction. The potent antigen-presenting CD103⁺ dendritic cell (DC) is a key immune player in close contact with both γδT17 cells and microbiota. This study presents a novel cellular network among...

article

Determination of total Cl in incinerator fly ashes utilized as cement raw materials

Yu-Ling Wei, Chi-Lung Cheng

Construction and Building Materials > 2016 > 124 > C > 544-549

To utilize incinerator fly ashes (IFAs) as cement raw materials, the knowledge of their total Cl content is indispensible, hence a process which can digest IFA samples completely becomes critical. This study describes a two-stage microwave-assisted digestion process in which various acids and a set of terminal temperatures of 180–210°C are applied. In the first stage, three types of acids are utilized,...

article

Effect of waste glass addition on lightweight aggregates prepared from F-class coal fly ash

Yu-Ling Wei, Shao-Hsian Cheng, Guan-Wei Ko

Construction and Building Materials > 2016 > 112 > C > 773-782

Waste window glass powders are mixed with F-type coal fly ash and fired in an attempt to prepare lightweight aggregates (LWAs) at relatively lower sintering temperatures. The mixtures are formed into cylindrical green pellets with a press operated at 3000-psi pressure. The green pellets are then fired (sintered) in an electric furnace at 1050–1300°C for 10min without any pre-heating step, thus simplifying...

article

A rhodamine derivative for Hg2+-selective colorimetric and fluorescent sensing and its application to in vivo imaging

Xue-Mei Li, Rui-Rui Zhao, Yu-Ling Wei, Dan Yang, more

Chinese Chemical Letters > 2016 > 27 > 6 > 813-816

A rhodamine-based sensor has been developed for the detection of mercuric ions. The colorimetric and fluorescence responses, allowing naked-eye detections, are based on Hg²⁺-induced opening of the rhodamine spirocycle. Among all the testes ions, only Hg²⁺ generated a significant fluorescence enhancement of up to 300-fold, with a bright yellow–green emission. This sensor was a low toxic compound, and...

article

The Split Virus Influenza Vaccine rapidly activates immune cells through Fcγ receptors

William E. O’Gorman, Huang Huang, Yu-Ling Wei, Kara L. Davis, more

Vaccine > 2014 > 32 > 45 > 5989-5997

Seasonal influenza vaccination is one of the most common medical procedures and yet the extent to which it activates the immune system beyond inducing antibody production is not well understood. In the United States, the most prevalent formulations of the vaccine consist of degraded or “split” viral particles distributed without any adjuvants. Based on previous reports we sought to determine whether...

article

Detoxification of hazardous dust with marine sediment

Yu-Ling Wei, Chang-Yuan Lin, H. Paul Wang

Marine Pollution Bulletin > 2014 > 85 > 2 > 810-815

Hazardous electric arc furnace dust containing dioxins/furans and heavy metals is blended with harbor sediment, fired at 950–1100°C to prepare lightweight aggregates. Dust addition can lower the sintering temperature by about 100°C, as compared to a typical industrial process. After firing at 950°C and 1050°C, more than 99.85% of dioxins/furans originally present in the dust have been removed and/or...

article

Recycling steel-manufacturing slag and harbor sediment into construction materials

Yu-Ling Wei, Chang-Yuan Lin, Shao-Hsiang Cheng, H. Paul Wang

Journal of Hazardous Materials > 2014 > 265 > C > 253-260

Mixtures consisting of harbor sediment and slag waste from steel industry containing toxic components are fired to produce non-hazardous construction materials. The fired pellets become lighter as firing temperature increases. At a sintering temperature of ≦1050°C, the fired pellets are in a form of brick-like product, while at 1100°C, they become lightweight aggregates. Calcium silicate, kyanite,...

article

Docosahexaenoic acid inhibition of inflammation is partially via cross-talk between Nrf2/heme oxygenase 1 and IKK/NF-κB pathways

Ya-Chen Yang, Chong-Kuei Lii, Yu-Ling Wei, Chien-Chun Li, more

The Journal of Nutritional Biochemistry > 2013 > 24 > 1 > 204-212

We examined the underlying mechanisms involved in n-3 docosahexaenoic acid (DHA) inhibition of inflammation in EA.hy926 cells. The present results demonstrated that pretreatment with DHA (50 and 100 μM) inhibited tumor necrosis factor-alpha (TNF-α)-induced intercellular adhesion molecule 1 (ICAM-1) protein, mRNA expression and promoter activity. In addition, TNF-α-stimulated inhibitory kappa B (IκB)...

article

γδ T Cells Recognize a Microbial Encoded B Cell Antigen to Initiate a Rapid Antigen-Specific Interleukin-17 Response

Xun Zeng, Yu-Ling Wei, Jun Huang, Evan W. Newell, more

Immunity > 2012 > 37 > 3 > 524-534

γδ T cells contribute uniquely to immune competence. Nevertheless, how they function remains an enigma. It is unclear what most γδ T cells recognize, what is required for them to mount an immune response, and how the γδ T cell response is integrated into host immune defense. Here, we report that a noted B cell antigen, the algae protein phycoerythrin (PE), is a murine and human γδ T cell antigen....

article

Evidence for a new mechanism of Fe₂O₃ decomposition in lightweight aggregate formation

Yu-Ling Wei, Jing-Chiang Yang, Kuan-Wei Ko

Environmental Chemistry Letters > 2012 > 10 > 1 > 41-47

Hematite (Fe₂O₃) chemical reduction into FeO and Fe₃O₄ by releasing O₂ at high temperatures is considered one of the generally accepted mechanisms for processing waste minerals and clay into lightweight aggregate construction materials. In many case studies, this mechanism has not been strictly confirmed. To verify whether hematite can effectively release O₂ at 1,000–1,260°C, a material containing...

article

Preparation of low water-sorption lightweight aggregates from harbor sediment added with waste glass

Yu-Ling Wei, Chang-Yuan Lin, Kuan-Wei Ko, H. Paul Wang

Marine Pollution Bulletin > 2011 > 63 > 5-12 > 135-140

A harbor sediment is successfully recycled at 1150°C as low water-absorption lightweight aggregate via addition of waste glass powder. Sodium content in the waste glass is responsible for the formation of low-viscosity viscous phases during firing process to encapsulate the gases generated for bloating pellet samples. Water sorption capacity of the lightweight products can be considerably reduced...

article

Thermal enrichment and speciation of copper in rice husk ashes

Yu-Ling Wei, Ming-Jan Hu, Yen-Hsun Peng

Journal of Hazardous Materials > 2010 > 184 > 1-3 > 805-811

Copper(II) was considerably enriched in the residual ash via thermal treatment of copper-sorbed rice husk at 700–1100°C for 2h, and the copper speciation was quantitatively determined with X-ray absorption spectroscopy. After the thermal process, the resulting ash only represents by weight 18.7–26.4% of the pre-heated samples. Copper content in the ashes is >7% which is far above the required minimum...

article

Antituberculosis Agents and an Inhibitor of the para‐Aminobenzoic Acid Biosynthetic Pathway from Hydnocarpus anthelminthica Seeds

Jun‐Feng Wang, Huan‐Qin Dai, Yu‐Ling Wei, Hua‐Jie Zhu, more

Chemistry & Biodiversity > 7 > 8 > 2046 - 2053

Investigation on the extracts of Hydnocarpus anthelminthica seeds led to the isolation of three new compounds, anthelminthicins A–C (1–3, resp.), and two known ones, namely chaulmoogric acid (4) and ethyl chaulmoograte (5). Their structures were determined mainly by using spectroscopic techniques. The absolute configuration at the cyclopentenyl moiety of compound 2 was rationalized by quantum calculations...

article

Polyaniline/multi-walled carbon nanotube composites with core–shell structures as supercapacitor electrode materials

Yi Zhou, Zong-Yi Qin, Li Li, Yu Zhang, more

Electrochimica Acta > 2010 > 55 > 12 > 3904-3908

Composites with core–shell structures consisting of polyaniline and carbon nanotubes were prepared via in situ polymerization of aniline monomers by using multi-walled carbon nanotubes with minimized defects as templates. The strong interaction in such conjugated systems greatly improves the charge-transfer reaction between polyaniline and the carbon nanotube. Influences of the thickness of the polyaniline...

article

Characteristics of nano zinc oxide synthesized under ultrasonic condition

Yu-Ling Wei, Pei-Chi Chang

Journal of Physics and Chemistry of Solids > 2008 > 69 > 2-3 > 688-692

Hydrothermal method is employed to synthesize nano ZnO particles in solutions containing different surfactant at room temperature and 50°C under ultrasonic condition. The reactants used are aqueous solutions of zinc chloride and potassium hydroxide, and the surfactants are cetyltrimethylammonium bromide (CTAB) and triethanolamine (TEA). Instruments including synchrotron-based X-ray absorption spectroscope...

article

Photocatalytic degradation of spill oils on TiO2 nanotube thin films

Ying-Ya Hsu, Tung-Li Hsiung, H. Paul Wang, Yasuhiro Fukushima, more

Marine Pollution Bulletin > 2008 > 57 > 6-12 > 873-876

The nitrogen-doped TiO ₂ nanotube (N-TNT) thin films were synthesized using ZnO nanorods as the template and doped with urea at 623K. Under ultraviolet (UV) and visible light irradiation, the efficiencies for photocatalytic degradation of methylene blue is as high as 30%. About 10% of toluene (representing aromatics in the spill oils) in sea water can be photocatalytically degraded under visible...

article

Recycling of harbor sediment as lightweight aggregate

Yu-Ling Wei, Jing-Chiang Yang, Yong-Yang Lin, Shih-Yu Chuang, more

Marine Pollution Bulletin > 2008 > 57 > 6-12 > 867-872

Sediment sampled from Taichung Harbor was mixed with local reservoir sediment at different weight ratios to prepare lightweight aggregate at 1050, 1100, and 1150°C. A pressure of 3000 or 5000psi was used to shape the powder mixtures into pellets before the heating processes. The results indicate that the leaching levels of trace metals from the lightweight aggregate samples are considerably reduced...

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Search results for: Yu-Ling Wei

Effect of calcium compounds on lightweight aggregates prepared by firing a mixture of coal fly ash and waste glass

Recycling steel wastewater sludges as raw materials for preparing lightweight aggregates

A Rhodamine-based fluorescent sensor for chromium ions and its application in bioimaging

Microbiota-activated CD103⁺ DCs stemming from microbiota adaptation specifically drive γδT17 proliferation and activation

Determination of total Cl in incinerator fly ashes utilized as cement raw materials

Effect of waste glass addition on lightweight aggregates prepared from F-class coal fly ash

A rhodamine derivative for Hg2+-selective colorimetric and fluorescent sensing and its application to in vivo imaging

The Split Virus Influenza Vaccine rapidly activates immune cells through Fcγ receptors

Detoxification of hazardous dust with marine sediment

Recycling steel-manufacturing slag and harbor sediment into construction materials

Docosahexaenoic acid inhibition of inflammation is partially via cross-talk between Nrf2/heme oxygenase 1 and IKK/NF-κB pathways

γδ T Cells Recognize a Microbial Encoded B Cell Antigen to Initiate a Rapid Antigen-Specific Interleukin-17 Response

Evidence for a new mechanism of Fe₂O₃ decomposition in lightweight aggregate formation

Preparation of low water-sorption lightweight aggregates from harbor sediment added with waste glass

Thermal enrichment and speciation of copper in rice husk ashes

Antituberculosis Agents and an Inhibitor of the para‐Aminobenzoic Acid Biosynthetic Pathway from Hydnocarpus anthelminthica Seeds

Polyaniline/multi-walled carbon nanotube composites with core–shell structures as supercapacitor electrode materials

Characteristics of nano zinc oxide synthesized under ultrasonic condition

Photocatalytic degradation of spill oils on TiO2 nanotube thin films

Recycling of harbor sediment as lightweight aggregate

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