Publications by authors named "Xian-Ze Meng"
Titanium and its alloys are protected by a compact and stable passive film, which confers resistance to corrosion by the primary halogen chloride (Cl) while being less effective against fluoride (F). Although researchers have recognized different macroscopic corrosion effects of these halide ions on titanium, the underlying mechanisms remain largely unexplored. In this work, the bonding of Cl/F with stable passive films was studied in neutral and acidic (pH = 2.
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- The oxygen reduction reaction (ORR) on titanium (Ti) is complex due to a spontaneously formed oxide film that slows down reaction rates and can cause weak, multi-reaction currents.
- Researchers used a modified scanning electrochemical microscopy technique to examine how different factors like film characteristics and solution conditions affect Ti's ORR activity and selectivity, achieving a high efficiency of 97.2%.
- Key findings reveal that reduced Ti enhances selectivity for the desired 4-electron reduction pathway, though quick film regeneration in certain conditions can inhibit overall ORR activity, and anion species significantly impact the reaction outcomes.
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- * Techniques like X-ray scattering, confocal Raman spectroscopy, and molecular dynamics reveal that SO changes fully hydrogen-bonded water into partially hydrogen-bonded water, and this transformation is directly related to the concentration of NaSO.
- * The findings indicate that SO and Na accumulate in the inner Helmholtz layer, altering ion diffusion and potentially leading to salt scaling on titanium surfaces, thereby providing insight into how the titanium passive film can be damaged by SO.
Introduction. Posttraumatic stress disorder (PTSD) is accompanied by poor general psychological status (GPS). In the present study, we investigated the effects of a Chinese herbal formula on GPS in earthquake survivors with PTSD.
View Article and Find Full Text PDF[Sustainable utilization of Radix Glycyrrhizae for protection of ecology environment and herbal resources].
Zhong Xi Yi Jie He Xue Bao
November 2006
Radix Glycyrrhizae is a commonly used herbal drug for traditional Chinese medicine in China, and it is also an important material for drug, food, chemical industry, and dye industry. Furthermore, in Northwest China, Radix Glycyrrhizae acts as a key plant for preventing desertification, which currently is the most serious environmental problem in China. This report concentrated on discussing the great potential value of Glycyrrhiza on ecosystem, introducing the principles of protection and sustainable utilization of Glycyrrhiza resource, offering the suitable methods of utilization, and suggesting how to carry out the research on the substitute drugs.
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