Hongyun Wei

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AIM To analyze the changes of different Lactobacillus species in ulcerative colitis patients and to further assess the therapeutic effects of selected Lactobacillus strains on dextran sulfate sodium (DSS)-induced experimental colitis in BALB/c mice. METHODS Forty-five active ulcerative colitis (UC) patients and 45 population-based healthy controls were(More)
A variety of problems arising in communication networks, computer networks, automated manufacturing plants, etc. can be described by min-max-plus system models. Output feedback stabilization for the nonlinear, non-autonomous minmax-plus system ) , , ( H G F is studied in this paper. A new coloring graph structure is presented based on the new, complex(More)
In this paper, a hybrid nonlinear adaptive noise canceller (ANC) with single-or multi-reference channels is proposed to perform the task of extracting fetal electrocardiogram (FECG). A Volterra filter and a functional link artificial neural network (FLANN) are equipped in parallel in each reference channel to approximate the linearity and nonlinearity(More)
Inhibition of CPSF30 function by the effector domain of influenza A virus of non-structural protein 1 (NS1A) protein plays a critical role in the suppression of host key antiviral response. The CPSF30-binding site of NS1A appears to be a very attractive target for the development of new drugs against influenza A virus. In this study, structure-based(More)
In an active noise control (ANC) system, frequencies of the reference cosine and sine waves generated according to the online sensor information may be different from those of the primary noise to be suppressed, if the sensor contains error due to fatigue, aging etc. This difference, called frequency mismatch (FM), will severely deteriorate the performance(More)
Bone conduction has been used for speech enhancement in very noisy environments. It usually includes nonlinearity in transmission, small non-stationary noise due to body movements (friction, collision, wind noise, crosstalk and so on), serious attenuation of high frequency components, etc. These problems usually lead to poor intelligibility of(More)
Broadband frequency-selective fading channels usually have the sparsity nature. By exploiting the sparsity, adaptive sparse channel estimation (ASCE) algorithms, e.g., least mean square with reweighted L1-norm constraint (LMS-RL1) algorithm, could bring a considerable performance gain under assumption of additive white Gaussian noise (AWGN). In practical(More)
It has been widely recognized that conventional techniques and algorithms for speech enhancement indicate severe performance degradation when operated in a very harsh noise environment. In recent years, linear and nonlinear adaptive noise cancellers (ANC) have been developed for speech denoising, which use both bone- and air-conducted speech signals(More)
BACKGROUNDS Pharmacotherapy and surgery constitute the mainstay of treatment for inflammatory bowel disease (IBD). But post-treatment relapsing and recurrence persist as concerns in patients with IBD. Stem cell therapy (SCT) has emerged as a promising treatment strategy in inflammatory bowel disease (IBD), including hematopoietic stem cells (HST),(More)