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  1. No Access

    Article

    Application of a TLC chemical method to detection of cyclotides in plants

    Iodine, Dragendorff’s reagent, ninhydrin and Coomassie brilliant blue G-250 reagents were used to detect cyclotides from proteins, cyclopeptides, linear-peptides and amino acids in the thin layer chromatograph...

    Xu WenYan, Tang Jun, Ji ChangJiu, He WenJun, Tan NingHua in Chinese Science Bulletin (2008)

  2. No Access

    Article

    Numerical comparison of two boundary element methods for plane harmonic functions

    A direct boundary element method (BEM) has been studied in the paper based on a set of sufficient and necessary boundary integral equations (BIE) for the plane harmonic functions. The new sufficient and necess...

    He Wenjun, Ding Haojiang, Hu Haichang in Acta Mechanica Sinica (1993)

  3. No Access

    Article

    Transition elements matching the near crack-tip strain field

    New transition elements used with the collapsed triangular singular elements are constructed by using the improved isoparametric transformations. Without 1/r singular terms, the new transition elements' strain fi...

    Ding Haojiang, He Wenjun in International Journal of Fracture (1992)