Yuan Shi-ling

Shandong University, Chi-nan-shih, Shandong Sheng, China

Are you Yuan Shi-ling?

Claim your profile

Publications (3)2.78 Total impact

  • Zhang Heng · Hu Li-mei · Lin Cun-guo · Wang Li · Yuan Shi-ling
    [Show abstract] [Hide abstract]
    ABSTRACT: A series of molecular dynamics simulations were conducted to investigate the interaction between protein (lysozyme) and two typical non-fouling membranes (PDMS and SBMA). Lysozymes were initially put on the surfaces of two non-fouling membranes with a minimal separation distance 0.5 nm, 1.0 nm and 1.5 nm. Centroids of proteins were fixed during the first 15 ns simulation to determine the forces that membranes extended on proteins. Then the fix was cancelled in the following 20 ns simulations. At the end of simulations, both the proteins were adsorbed on membranes. By analyzing the types of residues near adsorption sites, contact areas, hydrogen bonds, VDW contacts between protein and membranes, we concluded that PDMS has a better combination with lysozyme than SBMA. This closely adsorption makes the protein not easy to leave from membranes. To fully understand the molecular mechanism of non-fouling materials, the simulation results were analyzed from two aspects : interaction between protein and membrane, interaction between surface hydration layer and membrane. Combined with our previous work which concentrated on properties of surface hydration layers it is concluded (1) PDMS has a larger attractive force on protein than SBMA at the whole distance range. Both the interactions between protein and membranes were energetically favorable, but Lysozyme interacted much more strongly with PDMS than SBMA. (2) SBMA has plenty of hydrogen bonds, electrostatic interactions, and cage effects with surface waters that lead to a stable surface hydration layer. The hydration layers were believed to form a physical and energetic barrier to prevent protein adsorption on the surface. At last we proposed a possible mechanism of protein adsorption or anti-fouling: the first obligatory step of protein adsorption was the dehydration of both protein and the membrane. After that, protein induced a series of conformation changes to change its surface hydrophobic/hydrophilic properties, charge distributions etc. Then it came to the final stable adsorption state by forming hydrogen bonds, VDW contacts and electrostatic interactions between protein and substrates.
    Acta Polymerica Sinica 01/2014; 014(1):99-106. DOI:10.3724/SP.J.1105.2014.13164 · 0.64 Impact Factor
  • Yuan Shi-Ling · Cai Zheng-Ting · Xu Gui-Ying
    [Show abstract] [Hide abstract]
    ABSTRACT: The aggregates in sodium dedecylsulphate (SDS)/dimethylbenzene/water systems have been investigated using dissipative particles dynamic (DPD) simulation method. Through analyzing three-dimensional structures of aggregates, three simulated results are found. One is the phase separation, which is clearly observed by water density and the aggregates in the simulated cell; another is the water morphology in reverse micelle, which can be found through the isodensity slice of water including bound water, trapped water and bulky water; the third is about the water/oil interface, i. e., ionic surfactant molecules, SDS, prefer to exist in the interface between water and oil phase at the low concentration.
    Chinese Journal of Chemistry 02/2010; 21(2):112 - 116. DOI:10.1002/cjoc.20030210205 · 1.58 Impact Factor
  • CUI Peng · YUAN Shi-Ling · XU Gui-Ying
    [Show abstract] [Hide abstract]
    ABSTRACT: Nanostructure SiO<SUB>2</SUB> was prepared from mealies corns. The micron phytoliths were obtained after treatment with mixed acids, using the phytolith samples as raw materials, nano-silica was obtained through calcining at certain temperature after boiling in the nitric solution. And its structure was characterized by X-ray diffraction (XRD), optical microscope, transmission electron microscope (TEM), scanning electron microscope (SEM), energy dispersive spectroscope (EDS) and Infrared Spectroscope (IR). The results show that the phytoliths are all dumbbellª²type in cornstalks and leaves in the micro level; however they are located along or against vertically the lignose, respectively. The nanoª²silica with diameter of 103nm is obtained through calcination after boiling in HNO<SUB>3</SUB> solution, and the nano SiO<SUB>2</SUB> crosslink in higher temperature.
    Journal of Inorganic Materials 06/2009; 24(3). DOI:10.3724/SP.J.1077.2009.00512 · 0.57 Impact Factor

Publication Stats

5 Citations
2.78 Total Impact Points


  • 2009–2014
    • Shandong University
      • • Department of Chemical Engineering
      • • Institute of Theoretical Chemistry
      Chi-nan-shih, Shandong Sheng, China