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| 1 | Effects of the actuation waveform on the drop size reduction in drop-on-demand inkjet printing显示文摘In this study the effects of the actuation waveforms on the droplet generation in a drop-on-demand inkjet printing are studied systematically by numerical simulations.Two different types of waveforms,namely the unipolar and bipolar actuations,are investigated for three fluids with different physical properties.We focus on two key parameters,which are the dwell time and the velocity amplitude.For the unipolar driving,the ejection velocity and the ejected liquid volume are both increased as the velocity amplitude becomes larger.The dwell time only has minor effects on both the ejection velocity and the ejected liquid volume.The ejection velocity decreases significantly for large liquid viscosity,while the influences of viscosity on the ejected liquid volume are much weaker.Four different droplet morphologies and the corresponding parameter ranges are identified.The droplet radius can be successfully reduced to about 40%e of the nozzle exit radius.For the bipolar waveforms,same droplet morphologies are observed but with shifted boundaries in the phase space.The minimal radius of stable droplet produced by the bipolar waveforms is even smaller compared to the unipolar ones. | Anas Bin Aqeel Muhammad Mohasan Pengyu Lv Yantao Yang Huiling Duan | 2020 | Acta Mechanica Sinica2020，36，5： | 2 |
| 2 | A putative transglycosylase encoded by SC04132 influences morphological differentiation and actinorhodin production in Streptomyces coelicolor显示文摘这里,我们报导那 tgdA,编码通常认为的 transglycosylase 的新奇基因,在 Streptomyces coelicolor 影响词法区别和蓝颜料的复合 actinorhodin 的收益。tgdA 0 异种显示稀少的天线 hyphae 和经常缺乏 chromosomal DNA 的不规则的孢子链。提高的 actinorhodin 生产在异种与 actII-orf4 的 overexpression 与一致。tgdA 表示时间地并且发展地被调整。在 Streptomyces avermilitis 和 Streptomyces lividans 的 tgdA orthologs 也影响区别。 | Pengfei Xie Ana Zeng Xiaoting Lv Qiuxiang Cheng Zhongjun Qin | 2013 | Acta Biochimica et Biophysica Sinica2013，45，4： | 1 |
| 3 | Dexamethasone prevents granu- locyte/ macrophage colony stimulating factor-induced nuclear factor-KB activation, inducible nitric oxide synthase expression and nitric oxide production in a skin'dendritic cell line显示文摘 | Ana LV Margarida GM Teresa C | 2003 | Mediators Inflamm2003，12，2： | 1 |
| 4 | Patterning the neuronal cells via inkjet printing of self-assembled peptides on silk scaffolds显示文摘The patterning of neuronal cells and guiding neurite growth are important for neuron tissue engineering and cell-based biosensors. In this paper, inkjet printing has been employed to pattern self-assembled I_3 QGK peptide nanofibers on silk substrates for guiding the growth of neuron-like PC12 cells. Atomic force microscopy(AFM)confirmed the dynamic self-assembly of I_3 QGK into nanofiber structures. The printed self-assembled peptide strongly adheres to regenerated silk fibroin(RSF) substrates through charge-charge interactions. It was observed that in the absence of I_3 QGK, PC12 cells exhibited poor attachment to RSF films, while for RSF surfaces coated or printed with peptide nanofibers, cellular attachment was significantly improved in terms of both cell density and morphology. AFM results revealed that peptide nanofibers can promote the generation of axons and terminal buttons of PC12 cells, indicating that I_3 QGK nanofibers not only promote cellular attachment but also facilitate differentiation into neuronal phenotypes. Inkjet printing allows complex patterning of peptide nanofibers onto RSF substrates, which enabled us to engineer cell alignment and provide an opportunity to direct axonal development in vitro. The live/dead assay showed that printed I_3 QGK patterns exhibit no cytotoxicity to PC12 cells demonstrating potential for future nerve tissue engineering applications. | Weizhen Sun Yi Zhang David A.Gregory Ana Jimenez-Franco Mhd Anas Tomeh Songwei Lv Jiqian Wang John W.Haycock Jian R.Lu Xiubo Zhao | 2020 | Progress in Natural Science:Materials International2020，30，5： | 1 |
| 5 | Cavity dynamics of water drop impact onto immiscible oil pool with different viscosity显示文摘In this work,we numerically study the impact of a water droplet onto a deep oil pool.Two fluids are immiscible and the viscosity of the pool liquid is changed systematically.We focus on the cavity dynamics during the impact and especially the effects of the pool liquid viscosity and the impacting velocity.For the parameter range explored,we identify the regime where splashing occurs with corolla breaking into droplets,and the regime where no splashing is observed.Similarity is found for the time evolution of cavity depth for fixed impact velocity and different viscosity,if the cavity depth and time are nondimensionalized by the maximal depth and the time when the maximal depth is reached.Effective power-law scalings are also proposed to describe the dependence of the maximal cavity depth and the corresponding time on the impact velocity and pool liquid viscosity,in the term of Froude and Reynolds numbers. | Muhammad Mohasan Anas Bin Aqeel Pengyu Lv Yantao Yang Huiling Duan | 2021 | Acta Mechanica Sinica2021，37，3： | 0 |
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