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1,302 results on '"CHEN Li-hua"'

2. Direct measurement of the break-out 19F(p, γ)20Ne reaction in the China Jinping underground laboratory (CJPL)

Author

Chen, Yin-Ji, Zhang, Hao, Zhang, Li-Yong, He, Jian-Jun, deBoer, Richard James, Wiescher, Michael, Heger, Alexander, Kahl, David, Su, Jun, Odell, Daniel, Li, Xin-Yue, Wang, Jian-Guo, Zhang, Long, Cao, Fu-Qiang, Zhang, Zhi-Cheng, Jiang, Xin-Zhi, Wang, Luo-Huan, Li, Zi-Ming, Song, Lu-Yang, Sun, Liang-Ting, Wu, Qi, Li, Jia-Qing, Cui, Bao-Qun, Chen, Li-Hua, Ma, Rui-Gang, Li, Er-Tao, Lian, Gang, Sheng, Yao-De, Li, Zhi-Hong, Guo, Bing, and Liu, Wei-Ping

Published
2024
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19. Dietary cholesterol and egg intake in relation to incident cardiovascular disease and all-cause and cause-specific mortality in postmenopausal women

Author

Chen, Guo-Chong, Chen, Li-Hua, Mossavar-Rahmani, Yasmin, Kamensky, Victor, Shadyab, Aladdin H, Haring, Bernhard, Wild, Robert A, Silver, Brian, Kuller, Lewis H, Sun, Yangbo, Saquib, Nazmus, Howard, Barbara, Snetselaar, Linda G, Neuhouser, Marian L, Allison, Matthew A, Van Horn, Linda, Manson, JoAnn E, Wassertheil-Smoller, Sylvia, and Qi, Qibin

Subjects
Biomedical and Clinical Sciences, Nutrition and Dietetics, Prevention, Cardiovascular, Nutrition, Brain Disorders, Aging, Heart Disease, Stroke, Good Health and Well Being, Aged, Cardiovascular Diseases, Cholesterol, Dietary, Eggs, Feeding Behavior, Female, Humans, Middle Aged, Mortality, Postmenopause, cardiovascular disease, cholesterol, diet, eggs, postmenopausal women, Engineering, Medical and Health Sciences, Nutrition & Dietetics, Clinical sciences, Nutrition and dietetics
Abstract

BackgroundThe potential cardiovascular impact of dietary cholesterol intake has been actively debated for decades.ObjectivesWe aimed to evaluate associations of dietary cholesterol and egg intakes with incident cardiovascular disease (CVD) and all-cause and cause-specific mortality.MethodsWe included 96,831 US postmenopausal women aged 50-79 y without known CVD or cancer during baseline enrollment (1993-1998) of the Women's Health Initiative. Dietary information was collected using a validated FFQ. Incident CVD [i.e., ischemic heart disease (IHD) and stroke] and all-cause and cause-specific mortality were ascertained and adjudicated through February 2018.ResultsA total of 9808 incident CVD cases and 19,508 all-cause deaths occurred during a median follow-up of 17.8 y and 18.9 y, respectively. After multivariable adjustment for traditional risk factors and key dietary nutrients including dietary saturated fat, there were modest associations of dietary cholesterol intake with incident CVD (HRQ5versusQ1: 1.12; 95% CI: 1.03, 1.21; P-trend  0.05). Higher egg consumption was also associated with modestly higher risk of incident CVD (P-trend = 0.004) and all-cause mortality (P-trend

Published
2021

43. Na Doping and CeO2 Nanoparticle Surface Modification Enhancing the Li-Rich Li1.2Mn0.54Ni0.13Co0.13O2 Cathode Material for a Lithium-Ion Battery.

Author

Feng, Xiang-Yu, Ran, Mao-Jin, Yuan, Man-Man, Wei, Mei-Tong, Wu, Liang, Hu, Zhi-Yi, Chen, Li-Hua, Li, Yu, and Su, Bao-Lian

Abstract

Li-rich Mn-based layered oxides with high specific capacity and operating voltages have become one of the most promising materials for lithium-ion batteries (LIBs). However, it still faces several issues of low initial Coulombic efficiency, poor electronic conductivity, and voltage fading due to oxygen release and transition metal rearrangement during cycling. In this study, Li1.2Mn0.54Ni0.13Co0.13O2 (LMR) cathode material with Na ion doping (LMNaR) and CeO2 nanoparticle surface modification (LMNaR@CeO2) is prepared to realize a synergistic modification effect. The doping of Na ions enlarges Li layer spacing to effectively promote the insertion and extraction of lithium ions, which makes the layered structure more stable to reduce the effect of the phase transition. And the CeO2 nanoparticle surface modification restrains the side reactions between electrode and electrolyte, stabilizes lattice oxygen, and eases oxygen release. As a result, LMNaR@CeO2 displays a specific capacity of 196 mAh g–1 after 100 cycles at 0.5 C with a capacity retention of 94% and a merely voltage decay of 0.16 V, which are much better than those of LMR with a specific capacity of 159.6 mAh g–1 and only a 79% capacity retention. Our strategy here provides a feasible approach for the development of Li-rich Mn-based cathode materials for long-lived LIBs. [ABSTRACT FROM AUTHOR]

Published
2024
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44. CdS QDs grown on ellipsoidal BiVO4 for efficient photocatalytic degradation of tetracycline.

Author

Liu, Kai, Ran, Mao-Jin, Li, Zhi-Rong, Huang, Yi-Fu, Jiang, Ze-Yu, Li, Wan-Ying, Khojiev, Shokir, Hu, Zhi-Yi, Chen, Li-Hua, Liu, Jing, Li, Yu, and Su, Bao-Lian

Subjects
ELECTRON paramagnetic resonance, LIQUID chromatography-mass spectrometry, PHOTODEGRADATION, TETRACYCLINE, TETRACYCLINES, ACTIVATION energy
Abstract

Designing efficient, inexpensive, and stable photocatalysts to degrade organic pollutants and antibiotics has become an effective way for environmental remediation. In this work, we successfully performed in situ growth of CdS QDs on the surface of elliptical BiVO4 to try to show the advantage of the binary heterojuncted photocatalyst (BVO@CdS) for the photocatalytic degradation of tetracycline (TC). The In situ growth of CdS QDs can provide a large number of reactive sites and also generate a larger contact area with BiVO4. In addition, compared with mechanical composite materials, in situ growth can significantly reduce the energy barrier at the interface between BiVO4 and CdS, providing more channels for the separation and migration of photogenerated charge carriers, and further improving reaction activity. As a result, BVO@CdS-0.05 shows the best degradation efficiency, with a degradation rate of 88% after 30 min under visible light. The TC photodegradation follows a pseudo-second-order reaction with a dynamic constant of 0.472 min−1, which is 6.47 times that of pure BiVO4, 7.24 times that of pure CdS QDs and 2 times that of the mechanical composite. The degradation rate of BVO@CdS-0.05 decreases to 77.8% with a retention rate of 88.5% after four cycles, demonstrating excellent stability. Through liquid chromatography-mass spectrometry (LC-MS) analysis, two possible pathways for TC degradation are proposed. Through free radical capture experiments, electron spin resonance measurements, and photoelectrochemical comprehensive analysis, it is confirmed that BVO@CdS composites have constructed an efficient Z-scheme heterojunction via in situ growth, thereby highly enhancing the separation and transport efficiency of charge carriers. [ABSTRACT FROM AUTHOR]

Published
2024
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45. Engineering surface framework TiO6 single sites for unprecedented deep oxidative desulfurization.

Author

Yu, Shen, Liu, Zhan, Lyu, Jia-Min, Guo, Chun-Mu, Yang, Xiao-Yu, Jiang, Peng, Wang, Yi-Long, Hu, Zhi-Yi, Sun, Ming-Hui, Li, Yu, Chen, Li-Hua, and Su, Bao-Lian

Subjects
SULFUR compounds, TITANIUM catalysts, DESULFURIZATION, TITANIUM silicate, MOTOR fuels, DENSITY functional theory, ORGANOSULFUR compounds
Abstract

Catalytic oxidative desulfurization (ODS) using titanium silicate catalysts has emerged as an efficient technique for the complete removal of organosulfur compounds from automotive fuels. However, the precise control of highly accessible and stable-framework Ti active sites remains highly challenging. Here we reveal for the first time by using density functional theory calculations that framework hexa-coordinated Ti (TiO6) species of mesoporous titanium silicates are the most active sites for ODS and lead to a lower-energy pathway of ODS. A novel method to achieve highly accessible and homogeneously distributed framework TiO6 active single sites at the mesoporous surface has been developed. Such surface framework TiO6 species exhibit an exceptional ODS performance. A removal of 920 ppm of benzothiophene is achieved at 60°C in 60 min, which is 1.67 times that of the best catalyst reported so far. For bulky molecules such as 4,6-dimethyldibenzothiophene (DMDBT), it takes only 3 min to remove 500 ppm of DMDBT at 60°C with our catalyst, which is five times faster than that with the current best catalyst. Such a catalyst can be easily upscaled and could be used for concrete industrial application in the ODS of bulky organosulfur compounds with minimized energy consumption and high reaction efficiency. [ABSTRACT FROM AUTHOR]

Published
2024
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