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- H. S. Y. Chan, K. W. Chung, Dongwen Qi
- I. J. Bifurcation and Chaos
- 2001

Concrete numerical examples of quadratic differential systems having three limit cycles surrounding one singular point are shown. In case another finite singular point also exists, a (3, 1) distribution of limit cycles is also obtained. This is the highest number of limit cycles known to occur in a quadratic differential system so far. Representative… (More)

- Jibin Li, H. S. Y. Chan, K. W. Chung
- I. J. Bifurcation and Chaos
- 2002

- H. S. Y. Chan, K. W. Chung, Jibin Li
- I. J. Bifurcation and Chaos
- 2001

- K. W. Chung, H. S. Y. Chan
- Comput. Graph. Forum
- 1993

- K. W. Chung, H. S. Y. Chan, B. N. Wang
- Computers & Graphics
- 1999

- K. W. Chung, H. S. Y. Chan, B. N. Wang
- Computers & Graphics
- 1997

- K. W. Chung, H. S. Y. Chan, B. N. Wang
- Computers & Graphics
- 2001

- K. W. Chung, H. S. Y. Chan, B. N. Wang
- Computers & Graphics
- 1998

ÐBy studying the periodic drawings of the Dutch Artist M.C. Escher, we ®nd that the simplest group of the seventeen wallpaper group, P1, can be `visualized' in the upper halfplane as a symmetrical tessellation with self-similar properties. Iterative mappings are constructed and an algorithm is presented to automatically generate coloured patterns with this… (More)

- H. S. Y. Chan, Wendy Keung, Ronald A. Li, Andrew L. Miller, Sarah E. Webb
- Stem cells international
- 2015

Quantitative methods were established to determine the level of maturation of human embryonic stem cell-derived ventricular cardiomyocytes (hESC-vCMs) that were treated with different metabolic stimulants (i.e., isoproterenol and oleic acid) during early differentiation. Cells were double-immunolabeled with α-actinin and COX IV antibodies, to label the… (More)

- H. S. Y. Chan, Man Chun Cheung, Yi Gao, Andrew L. Miller, Sarah E. Webb
- Science China Life Sciences
- 2016

In order to develop a novel method of visualizing possible Ca2+ signaling during the early differentiation of hESCs into cardiomyocytes and avoid some of the inherent problems associated with using fluorescent reporters, we expressed the bioluminescent Ca2+ reporter, apo-aequorin, in HES2 cells and then reconstituted active holo-aequorin by incubation with… (More)