4篇
您的检索式：作者名="Dengming He"
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| 1 | Magnetic properties and microstructure of nanocrystalline bulk Nd-Fe-B with Ce-Co addition显示文摘The influence of Ce-Co alloy addition and sintering holding time on permanent magnetic properties and micro structure of nanocrystalline Nd-Fe-B bulk alloy were investigated.The coercivity of Nd-Fe-B bulk alloy can be enhanced greatly by more than 100% after adding Ce-Co powders.However,when the concentration of Ce-Co is up to 30 wt%,the density of the magnet can reach the maximum value of 7.58 g/cm^(3),but the coercivity does not increase significantly.On the other hand,with the increase of holding time to 10 min,the density and coercivity of magnets increase gradually,reaching up to 7.55 g/cm^(3) and 1134.3 kA/m,respectively.After the addition of Ce-Co alloy,Ce-Co may easily diffuse into the Nd-Fe-B matrix during hot-pressing and under the high pressure and temperature,thus increasing the content of grain boundary phase and the pinning effect of grain boundary,which leads to the increase of coercivity.The extension of the hot-pressing holding time may be more conducive to the diffusion of CeCo into the Nd-Fe-B matrix.In addition,the effect of Ce-Co addition on the magnetic properties of Nd-FeB with different content of rare earth was also studied.The addition of Ce-Co can effectively increase the coercivity of nanocomposite Nd_(2)Fe_(14)B/α-Fe magnets.The addition of Nb to the parent alloy can further improve the coercivity.For Nd_(11)Fe_(81.5)Nb_(1)Ga_(0.5)B_(6) alloy with 10 wt% Ce-Co addition,the coercivity can increase from 740.28 to 1098.48 kA/m. | Yilong Ma Qiqi Yang Xiaoli Chen Ying He Wenbo Xiang Jiaqi Lai Bin Shao Donglin Guo Dengming Chen Kejian Li | 2021 | Journal of Rare Earths2021，39，6： | 1 |
| 2 | Expression pattern of serum cytokines in hepatitis B viruslnfected patients with persist- ently normal alanine aminotransferase levels 显示文摘 | Dengming He Maoshi Li Shimin Guo | 2013 | J Clin Immunol2013，33，7： | 1 |
| 3 | Telbivudine Prevents Vertical Transmission of Hepatitis B Virus from Women High Viral Loads: A Prospective Long-term Study显示文摘 | Quanxin Wu Hongfei Huang Xiaowen Sun Meiming Pan Yun He Shun Tan Yi Zeng Li Li Guohong Deng Zehui Yan Dengming He Junnan Li Yuming Wang | 2014 | Clinical Gastroenterology and Hepatology2014，，： | 1 |
| 4 | A versatile 3D-printable hydrogel for antichondrosarcoma,antibacterial,and tissue repair显示文摘Following operative treatment of chondrosarcoma,post-surgery tissue reconstruction may be confronted with daunting challenges,including the delayed self-repair of defective tissue,tumor recurrence,and bac-terial infection.To overcome these challenges,a methacrylic anhydride(MA)modified sericin(SerMA)solution mixed with procyanidins(PC)loaded polydopamine(PDA)modified ZIF-8(PC@ZIF-8@PDA)nanoparticles to form a multifunctional PC@ZIF-8@PDA/SerMA hydrogel after exposure under blue light.Hydrogel products with pre-designed shapes were printed out by using the SerMA solution carrying PC@ZIF-8@PDA nanoparticles and chondrocytes,indicating that PC@ZIF-8@PDA/SerMA hydrogels with personalized shapes can be fabricated via 3D printing.Photocrosslinked PC@ZIF-8@PDA/SerMA hydrogel is able to kill chondrosarcoma cells and bacteria,like Staphylococcus aureus(S.aureus),and Escherichia coli(E.coli),by its photothermal activity combined with near-infrared radiation(NIR).The PC@ZIF-8@PDA/SerMA hydrogel exhibited an antioxidative activity and a good biocompatibility and was easily monitored by its florescent and photoacoustic properties.Rabbit articular cartilage defects were efficiently repaired by PC@ZIF-8@PDA/SerMA hydrogels with encapsulated corresponding autologous chondrocytes,and mice skin burning wounds were swiftly regenerated by applying this hydrogel.Hence,the PC@ZIF-8@PDA/SerMA hydrogel can be potentially applied to the clinic treatment of chondrosarcoma and tissue defect repair after chondrosarcoma resection due to its multifunction in the future. | Wenxiang Zhu Zheng Zhou Yuting Huang Hairong Liu Ning He Xiaolong Zhu Xiaoxiao Han Dengming Zhou Xuanchu Duan Xin Chen Yahui He Xiaolin Meng Shuai Zhu | 2023 | Journal of Materials Science & Technology2023，，5： | 0 |
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