PubMed Health⌕ Search

Biomedical subjects

Zhongjun Ma

Publications and source records attributed to Zhongjun Ma.

3 recordsLinked to original sources

A new method to realize cluster synchronization in connected chaotic networks.

In this article, a new method, which constructs a coupling scheme with cooperative and competitive weight-couplings, is used to stabilize arbitrarily selected cluster synchronization patterns with several clusters for connected chaotic networks. By the coupling scheme, a sufficient condition about the global stability of the selected cluster synchronization patterns is derived. That is to say, when the sufficient condition is satisfied, arbitrarily selected cluster synchronization patterns in connected chaotic networks can be achieved via an appropriate coupled scheme. The effectiveness of the method is illustrated by an example.

Algorithms↗

Flavonoids from the seeds of Sphaerophysa salsula.

Two new flavonoids, named sphaerophyside SA and sphaerophyside SB, together with 15 known flavonoids were isolated from the ethanolic extract of the seeds of Sphaerophysa salsula (Pall.) DC. The structures of the new compounds were elucidated mainly on the basis of the 1D and 2D NMR data.

Fabaceae↗

A new lignan from the seeds of Sphaerophysa salsula.

A novel lignan: sphaerophyside SC was isolated from ethanolic extract of the seeds of Sphaerophysa salsula (Pall.) DC. The structure of the compound was elucidated mainly on the basis of the 1D NMR and 2D NMR data.

Fabaceae↗