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477 results on '"Yang Lingling"'

2. Bogdanov-Takens bifurcation of codimension $3$ in the Gierer-Meinhardt model

Author

Wu, Ranchao and Yang, Lingling

Subjects
Mathematics - Dynamical Systems
Abstract

Bifurcation of the local Gierer-Meinhardt model is analyzed in this paper. It is found that the degenerate Bogdanov-Takens bifurcation of codimension 3 happens in the model, except that teh saddle-node bifurcation and the Hopf bifurcation. That was not reported in the existing results about this model. The existence of equilibria, their stability, the bifurcation and the induced complicated and interesting dynamics are explored in detail, by using the stability analysis, the normal form method and bifurcation theory. Numerical results are also presented to validate theoretical results.

Published
2023

3. Neural Radiation Fields via Accelerated and High Quality Parallel for Novel View Synthesis

Author

Liu, Liqiang, Yang, Lingling, Fu, Yanfang, Cai, Dongmei, Luo, Qianqing, Cao, Zijian, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Huang, De-Shuang, editor, Pan, Yijie, editor, and Zhang, Qinhu, editor

Published
2024
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12. Compact and miniaturized wideband bandpass filter based on substrate integrated waveguide and microstrip line.

Author

Liu, Haihong, Yang, Lingling, Cai, Bin, Wu, Ling, Cheng, Yongzhi, Chen, Fu, Luo, Hui, and Li, Xiangcheng

Subjects
*MICROSTRIP transmission lines, *BANDPASS filters, *INSERTION loss (Telecommunication), *MODAL analysis, *RESONANCE
Abstract

In this work, we present a simple design of a compact and miniaturized wideband bandpass filter (BPF) based on substrate integrated waveguide (SIW) and microstrip line. Through the order extension, the filtering effect and the order of the Chebyshev response of the designed BPF can be indirectly controlled by preserving square notches (SNs) on the SIW. By introducing one or two SNs in the SIW structure, the resonance frequencies of different modes can be controlled, thus achieving dual- and tri-mode BPFs with wideband and low insert loss. The working principle of the designed BPFs was illustrated by modal analysis, field distribution, and equivalent circuit theory. Based on this, the dual- and tri-mode BPFs with center frequencies of 6.8 and 7 GHz were designed and demonstrated numerically. Further experimental results indicate that the proposed tri-mode BPF has low insertion loss (0.25 dB), compact size (0.27λg2), and wideband bandwidth (60%). In addition, the tri-mode BPF achieves a broadband out-of-band rejection of 1.5f0 (f0 is the center resonance frequency) below the −10 dB level, making it highly promising for various applications in related fields. [ABSTRACT FROM AUTHOR]

Published
2024
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13. The impact of sensory neuropathy and inflammation on epithelial wound healing in diabetic corneas

Author

Yu, Fu-Shin X, Lee, Patrick SY, Yang, Lingling, Gao, Nan, Zhang, Yangyang, Ljubimov, Alexander V, Yang, Ellen, Zhou, Qingjun, and Xie, Lixin

Subjects
Biomedical and Clinical Sciences, Neurosciences, Ophthalmology and Optometry, Eye Disease and Disorders of Vision, Peripheral Neuropathy, Pain Research, Chronic Pain, Neurodegenerative, Physical Injury - Accidents and Adverse Effects, Regenerative Medicine, Autoimmune Disease, Diabetes, Development of treatments and therapeutic interventions, 2.1 Biological and endogenous factors, Aetiology, 5.2 Cellular and gene therapies, Eye, Metabolic and endocrine, Animals, Humans, Cornea, Diabetes Complications, Diabetes Mellitus, Experimental, Epithelium, Corneal, Inflammation, Wound Healing, Corneal wound healing, Diabetic keratopathy, Diabetic peripheral nerve degeneration, Opthalmology and Optometry, Ophthalmology & Optometry, Ophthalmology and optometry
Abstract

Diabetic peripheral neuropathy (DPN) is the most common complication of diabetes, with several underlying pathophysiological mechanisms, some of which are still uncertain. The cornea is an avascular tissue and sensitive to hyperglycemia, resulting in several diabetic corneal complications including delayed epithelial wound healing, recurrent erosions, neuropathy, loss of sensitivity, and tear film changes. The manifestation of DPN in the cornea is referred to as diabetic neurotrophic keratopathy (DNK). Recent studies have revealed that disturbed epithelial-neural-immune cell interactions are a major cause of DNK. The epithelium is supplied by a dense network of sensory nerve endings and dendritic cell processes, and it secretes growth/neurotrophic factors and cytokines to nourish these neighboring cells. In turn, sensory nerve endings release neuropeptides to suppress inflammation and promote epithelial wound healing, while resident immune cells provide neurotrophic and growth factors to support neuronal and epithelial cells, respectively. Diabetes greatly perturbs these interdependencies, resulting in suppressed epithelial proliferation, sensory neuropathy, and a decreased density of dendritic cells. Clinically, this results in a markedly delayed wound healing and impaired sensory nerve regeneration in response to insult and injury. Current treatments for DPN and DNK largely focus on managing the severe complications of the disease. Cell-based therapies hold promise for providing more effective treatment for diabetic keratopathy and corneal ulcers.

Published
2022

38. A multicenter prospective study of comprehensive metagenomic and transcriptomic signatures for predicting outcomes of patients with severe community-acquired pneumonia

Author

Zhao, Jingya, He, Xiangyan, Min, Jiumeng, Yao, Rosary Sin Yu, Chen, Yu, Chen, Zhonglin, Huang, Yi, Zhu, Zhongyi, Gong, Yanping, Xie, Yusang, Li, Yuping, Luo, Weiwei, Shi, Dongwei, Xu, Jinfu, Shen, Ao, Wang, Qiuyue, Sun, Ruixue, He, Bei, Lin, Yang, Shen, Ning, Cao, Bin, Yang, Lingling, She, Danyang, Shi, Yi, Zhou, Jiali, Su, Xin, Zhou, Hua, Ma, Zhenzi, Fan, Hong, Lin, Yongquan, Ye, Feng, Nie, Xifang, Zhang, Qiao, Tian, Xinlun, Lai, Guoxiang, Zhou, Min, Ma, Jinmin, Zhang, Jing, and Qu, Jieming

Published
2023
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