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6 results on '"Zhennan Li"'

3. Comparison of surface properties, cell behaviors, bone regeneration and osseointegration between nano tantalum/PEEK composite and nano silicon nitride/PEEK composite

Author

Yuan Zhu, Gangfeng Hu, Hong Guan, Yiqian Jiang, Xiaocong Yao, Jiakuan Ye, Jie Guan, Fangqi Xu, Meijuan Di, and Zhennan Li

Subjects
Bone Regeneration, Materials science, Polymers, Surface Properties, Composite number, Biomedical Engineering, Biophysics, Bioengineering, Tantalum, Nitride, Osseointegration, Polyethylene Glycols, Biomaterials, Benzophenones, chemistry.chemical_compound, Osteogenesis, Nano, Peek, Composite material, Bone regeneration, Silicon Compounds, Biomaterial, Ketones, Silicon nitride, chemistry
Abstract

Both tantalum (Ta) and silicon nitride (SN) exhibit osteogenic bioactivity and antibacterial property. In addition, as a biomaterial for bone repair, polyetheretherketone (PEEK) has outstanding biocompatibility and mechanical performances while it is biologically inert. In this study, by blending PEEK with Ta and SN nanoparticles, respectively, Ta/PEEK composite (TPC) and SN/PEEK composite (SPC) were fabricated for load-bearing bone repair. The surface roughness, hydrophilicity and surface energy of TPC containing Ta nanoparticles were higher than SPC containing SN nanoparticles and PEEK. In addition, TPC with Ta nanoparticles exhibited low antibacterial property while SPC with SN nanoparticles showed high bacterial property. Moreover, the MC3T3-E1 cells responses (e.g. proliferation and differentiation) to TPC was the highest while PEEK was the lowest

Published
2021

4. Acid mine drainage remediation with simulated permeable reactive barrier filled with fly ash and its composite materials as reactive media

Author

Yanrong Dong, Zhennan Li, and Zhenhua Yang

Subjects
Pollution, Renewable Energy, Sustainability and the Environment, Environmental remediation, 020209 energy, media_common.quotation_subject, fungi, Energy Engineering and Power Technology, 02 engineering and technology, Acid mine drainage, Fuel Technology, 020401 chemical engineering, Nuclear Energy and Engineering, Permeable reactive barrier, Fly ash, 0202 electrical engineering, electronic engineering, information engineering, Environmental science, 0204 chemical engineering, Sulfate-reducing bacteria, Composite material, media_common
Abstract

Fly ash and its composites are used as the reactive media of permeable reactive barrier to solve the pollution problem of acid mine drainage. Four simulation models (reaction column) of permeable r...

Published
2020

5. Repairing effects of sulfate-reducing bacteria on the dissolved pollutant of coal gangue based on leaching experiments

Author

Xuying Guo, Jian Zhang, Zhenhua Yang, Zhennan Li, Xianjun Wang, Yanrong Dong, Yuanling Zhang, and Junzhen Di

Subjects
Pollutant, Waste management, Renewable Energy, Sustainability and the Environment, business.industry, 020209 energy, technology, industry, and agriculture, food and beverages, Energy Engineering and Power Technology, 02 engineering and technology, complex mixtures, Coal gangue, respiratory tract diseases, Fuel Technology, 020401 chemical engineering, Nuclear Energy and Engineering, otorhinolaryngologic diseases, 0202 electrical engineering, electronic engineering, information engineering, Environmental science, Coal, Leaching (metallurgy), 0204 chemical engineering, Sulfate-reducing bacteria, business, Energy source
Abstract

Coal is the main energy source in China, which can produce a large amount of coal gangue in the process of mining. In the process of accumulation, coal gangue can release a variety of harmful ions ...

Published
2020

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