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| 1 | In-Situ Chemosynthesis of ZnO Nanoparticles to Endow Wood with Antibacterial and UV-Resistance Properties显示文摘Hybrid wood materials have attracted considerable attention because they have combined advantages of both wood and inorganic compounds. This work investigated the microstructural morphology, thermal stability, ultraviolet(UV) stability, and antibacterial property of composites made from wood/ZnO hybrid materials through a facile in-situ chemosynthesis methods. The X-ray diffraction(XRD) and thermogravimetric analysis(TGA) results indicated that the synthesized ZnO particles had an average grain size of about 10.8 nm. The scanning electron microscopy(SEM) observations showed that ZnO nanoflowers self-assembled with nanosheets were presented in wood cell lumens and increased with increasing Zn^(2+)concentrations. ZnO nanoparticles were also generated in the wood cell wall, which was confirmed by the results of energy-dispersive spectroscopy(EDS). The TGA tests also indicated that the thermal stability of wood/ZnO hybrid materials was improved after the formation of ZnO inorganic particles. Finally, the results of antibacterial efficacy tests and UV resistance tests revealed that ZnO nanoparticles showed a promising future as antimicrobial agents against Escherichia coli(E.coli) and UV resistance agents for wood protection. | Youming Dong Yutao Yan Huandi Ma Shifeng Zhang Jianzhang Li Changlei Xia Sheldon Q.Shi Liping Cai | 2017 | Journal of Materials Science & Technology2017，33，3： | 2 |
| 2 | High gain multiband planar spiral slot rectenna with dipole arms显示文摘A novel low profile multiband rectenna was proposed for harvesting the 2 nd generation(2 G), the 3 rd generation(3 G), the 4 th generation(4 G), wireless local area networks(WLANs) etc., electromagnetic wave energy. The proposed rectenna consists of a novel multiband antenna and a rectifier. The multiband antenna includes a radiating element on one side of a single layer dielectric substrate and a feeding spiral balun on the other side of the substrate. A conductive via is connected between the balun and the radiating element. In the radiating element, a deformed dipole structure is connected with an equiangular spiral slot structure and is used to generate a low frequency radiation around 900 MHz. The multiband antenna can work simultaneously at 0.869 GHz^0.948 GHz, 1.432 GHz^2.173 GHz, and 2.273 GHz^2.465 GHz with its peak gains of 7.1 dBi at 903 MHz, 4.1 dBi at 1 800 MHz, 5.2 dBi at 2 430 MHz. The radio frequency to direct current(RF-to-DC) conversion efficiencies of the rectifier are 58%~62% at these three frequencies for an input power of 0 dBm. The overall measurement results validate that the rectenna suits for energy harvesting and exhibits approximate maximum efficiencies of 58% at 0.9 GHz, 56% at 1.8 GHz, and 55% at 2.4 GHz with a low incident power density of 8 μW/cm^2. | Tan Lirong Zhao Feng Cai Lingxiang Sun Youming Poo Yin | 2019 | The Journal of China Universities of Posts and Telecommunications2019，26，3： | 0 |
| 3 | Rapid and sensitive detection of cucumber mosaic virus by reverse transcription loop-mediated isothermal amplification显示文摘Cucumber mosaic virus(CMV),as a member of Cucumovirus genus,is one of the most common lily viruses and has been reported in many countries [1,2].The CMV-infected plants may show developmental abnormalities of leaves,flowers,and bulbs [1].The symptoms will be extremely severe in plants infected by lily symptomless virus(LSV)[1].So far,CMV has posed a threat to cultivars of lily production.Consequently,it is important to develop an efficient approach to achieve rapid and sensitive detection of CMV.Many visual and serological methods have been reported to detect CMV,such as double antibody sandwich enzyme-linked immunosorbent assay [1],immunosorbent electron microscopy [1],enzyme-linked immunosorbent assay(ELISA)and reverse transcriptase-polymerase chain reaction(RT-PCR)[2].However,these methods are time-consuming and require skilled operator and specialized equipment.Loop-mediated isothermal amplification(LAMP)method provides a possible solution for these problems [3].LAMP was developed by Notomi et al.[4] with high specificity and sensitivity because of Bst DNA polymerase.LAMP method not only is suitable for field and large-scale detection of animal virus with more cost-effective but also could be applied to detect foodborne bacterial pathogens and other viruses with high performances [5].For a naked-eye inspection,SYBR Green I was added to the LAMP reaction products to visualize the results.In this study,we developed a rapid and sensitive LAMP method to detect CMV in lily plants and a simple reverse transcription loop-mediated isothermal amplification(RT-LAMP)to detect field CMV samples in lily bulbs. | Xiaorui Fan Yanan Du Youming Cai Yongchun Zhang Xiao Zhao Jieling Liang Dan Yang Qi Zhang Xiaoxia Zhang Wanjing Zhang Yan Xu Kai Zhao | 2019 | Acta Biochimica et Biophysica Sinica2019，51，2： | 0 |
| 4 | Thermo-controlled,self-released smart wood tailored by nanotechnology for fast clean-up of highly viscous liquids显示文摘Designing highly porous materials is of great importance for liquid separation,water purification,and disinfection,such as spill oil cleaning and recycling,seawater desalting,and oil/water separation.However,a remaining challenge is to produce porous materials with the characteristics of fast absorption,continuous directional transport,and self-release of viscous liquid.Herein,a functional cellulosic composite is reported by the chemical treatment and functionalization of wood resulting in a smart wood that can thermally selfrelease and separate high viscosity oil.The smart wood has a high absorption speed of 1398 mL/(m_(2)·s)(ethylene glycol)and a maximum absorption capacity of 47.2 g/g(chloroform)due to its intrinsic vertical micro/nanoscale channel structure,low tortuosity,and high porosity.Moreover,the switchable wettability is achieved by the surface coating of poly(N-isopropylacrylamide)on the porous wood,which enables the collection and removal of oil from the oil/water mixture.The high viscosity oil can be automatically released due to the passive oil release at room temperature.The release capacity of the smart wood remains above 91%after 15 cyclic tests.We envision that this functional smart wood could be extended to a wide range of applications in smart hydrogels,microfluidics,artificial drug release,and environmental restoration. | Yahui Cai Jianfei Wu Kaili Wang Youming Dong Jundie Hu Jiafu Qu Dan Tian Jianzhang Li Qiliang Fu | 2023 | SmartMat2023，4，1： | 0 |
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