Yueyun Zhang

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The black-spotted tokay and the red-spotted tokay are morphologically distinct and have largely allopatric distributions. The black-spotted tokay is characterized by a small body size and dark skin with sundry spots, while the red-spotted tokay has a relatively large body size and red spots. Based on morphological, karyotypic, genetic, and distribution(More)
In this paper, the Homotopy perturbation method is successfully extended to solve fractional biological population model and numerical results are obtained. The fractional derivatives are described in the Caputo sense, some examples are provided. And the solutions of the equation are continuous with the parameter α . Mathematics subject classification(More)
Parameter estimation for nonstationary chirp (LFM) signal is a noticeable signal processing problem that shows up in many applications. A special time-varying higher order moment approach is proposed here to realize multicomponent chirp signals parameter estimation. Though chirp signal is nonstationary, its special time-varying fourth order moment in this(More)
Formyl peptide receptor-like 1 (FPRL1) is a structural homologue of FPR, which binds chemotactic peptides as small as three amino acids (e.g., fMet-Leu-Phe, fMLF) and activates potent bactericidal functions in neutrophils. In comparison, FPRL1 ligands include peptides of 6-104 amino acids, such as Trp-Lys-Tyr-Met-Val-[d]Met (WKYMVm) and other synthetic(More)
A series of quinazolinone derivatives were synthesized based on a hit compound identified from a high-throughput screening campaign targeting the human formyl peptide receptor-like 1 (FPRL1). Based on structure-activity relationship analysis, we found that substitution on the para position of the 2-phenyl group of the quinazolinone backbone could alter the(More)
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