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您的检索式：作者名="Defang Teng"
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| 1 | Effect of six kinds of scale inhibitors on calcium carbonate precipitation in high salinity wastewater at high temperatures显示文摘Precipitation of calcium carbonate(Ca CO3) scale on heat transfer surfaces is a serious and expensive problem widely occurring in numerous industrial processes. In this study, we compared the scale inhibition effect of six kinds of commercial scale inhibitors and screened out the best one(scale inhibitor SQ-1211) to investigate its scale inhibition performance in highly saline conditions at high temperature through static scale inhibition tests. The influences of scale inhibitor dosage, temperature, heating time and p H on the inhibition efficiency of the optimal scale inhibitor were investigated. The morphologies and crystal structures of the precipitates were characterized by Scanning Electron Microscopy and X-ray Diffraction analysis. Results showed that the scale inhibition efficiency of the optimal scale inhibitor decreased with the increase of the reaction temperature. When the concentration of Ca2+was 1600 mg/L, the scale inhibition rate could reach 90.7% at 80°C at p H 8. The optimal scale inhibitor could effectively retard scaling at high temperature. In the presence of the optimal scale inhibitor, the main crystal structure of Ca CO3 changed from calcite to aragonite. | Xiaochen Li Baoyu Gao Qinyan Yue Defang Ma Hongyan Rong Pin Zhao Pengyou Teng | 2015 | Journal of Environmental Sciences2015，27，3： | 15 |
| 2 | Multi-layered micro/nanofibrous nonwovens for functional face mask filter显示文摘The worldwide COVID-19 pandemic has led to an attention on the usage of personal protective face masks.However,the longevity and safety of the commercial face masks are limited due to the charge dissipation of the electret meltblown nonwovens,which are dominate in the face mask filters.Herein,we design a type of multi-layer structured nonwovens using meltblowing and electrospinning technologies.The complex nonwovens involving meltblown and electrospun fibers are designed to possess multilevel fiber diameters and pore sizes.The micro/nanofibers with porous and wrinkled surface morphologies can well capture particulate matters(PMs),and the multilevel pore sizes contribute to low air resistance under high filtration efficiency.Airflow field simulation was carried out to understand the pressure distribution within the nonwovens in the filtration process.Meanwhile,by adding Ag nanoparticles(AgNPs)as additives,the nonwovens exhibit excellent antibacterial performance.The resultant nonwovens exhibit filtration efficiency of 99.1%for PM0.3 and low pressure drop of 105 Pa under the 10.67 cm/s inlet air velocity,and antibacterial rate of>99.99%for Escherichia coli.These performances and functions make the designed complex nonwovens a promising filter core for face masks. | Yuanqiang Xu Xiaomin Zhang Defang Teng Tienan Zhao Ying Li Yongchun Zeng | 2022 | Nano Research2022，15，8： | 6 |
| 3 | Overexpression of Kdr in adult endocardium induces endocardial neovascularization and improves heart function after myocardial infarction显示文摘Dear Editor,Coronary artery disease is a leading cause of mortality and morbidity worldwide.Blockade of effective blood flow to heart muscles results in cardiac ischemia and myocardial infarction(MI).Many angiogenic factors are known to be elicited during MI,indicating a natural response of the heart to induce the formation of new coronary vessels in an attempt to revascularize the ischemic myocardium. However,coronary vascular endothelial cells(VECS)do not have sufficient angiogenic potential to effectively repopulate all ischemic regions,and clinical trials aiming at inducing revascularization through the delivery of pro-angiogenic molecules after ischemia have invariably failed. | Zhen Jiang Zhengkai Lu Shan Kou Teng Feng Yuanxin Wei Zibei Gao Defang Deng Jufeng Meng Chao-Po Lin Bin Zhou Hui Zhang | 2021 | Cell Research2021，31，4： | 0 |
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