A5107462988- Mathematical and Theoretical Epidemiology and Ecology Models
- Nonlinear Dynamics and Pattern Formation
- Viral Infections and Vectors
- Viral Infectious Diseases and Gene Expression in Insects
- Mathematical Biology Tumor Growth
- Viral Infections and Outbreaks Research
- Evolution and Genetic Dynamics
- Advanced Differential Equations and Dynamical Systems
- SARS-CoV-2 and COVID-19 Research
- Virus-based gene therapy research
- Respiratory viral infections research
- Sensorless Control of Electric Motors
- Hepatitis B Virus Studies
- Electric Motor Design and Analysis
- Neural Networks Stability and Synchronization
- COVID-19 epidemiological studies
- Animal Genetics and Reproduction
- Magnetic Bearings and Levitation Dynamics
- Quantum chaos and dynamical systems
- Viral gastroenteritis research and epidemiology
- Opinion Dynamics and Social Influence
- Tuberculosis Research and Epidemiology
- Complex Network Analysis Techniques
- Head and Neck Cancer Studies
- Diagnosis and treatment of tuberculosis
Nanjing University of Information Science and Technology
2021-2024
Public Health Clinical Center of Chengdu
2024
Wuhan University
2024
Renmin Hospital of Wuhan University
2024
Jining Medical University
2024
Harbin Institute of Technology
2014-2023
Qinghai University Affiliated Hospital
2023
Xinxiang University
2023
Shenyang Ligong University
2023
Meteorological Bureau of Shenzhen Municipality
2022
Emergence of severe acute respiratory syndrome (SARS) from the winter 2002 to spring 2003 has caused a serious threat public health.To evaluate safety and immunogenicity inactivated SARS coronavirus (SARS-CoV) vaccine, 36 subjects received two doses 16 SARS-CoV units (SU) or 32 SU placebo control.On day 42, seroconversion reached 100% for both vaccine groups. On 56, participants in group receiving 91.1% had seroconverted. The geometric mean titre neutralizing antibody peaked 2 weeks after...
The position and speed estimation performance of the sliding mode observer (SMO) for permanent magnet synchronous motor (PMSM) drives under low carrier ratio degrades, due to inherent chattering enlarged control delay. To improve performance, this paper proposes a quasi-proportional-resonant (QPR) based adaptive obtain back electromotive force with harmonics cancellation. In observer, QPR controller is employed eliminate errors between observed currents actual ones in αβ reference frame,...
In order to reduce the chattering and phase shift, this article proposes an enhanced sliding mode observer (SMO) for sensorless control of permanent magnet synchronous motor (PMSM). conventional SMO, a low-pass filter (LPF) is commonly employed extract back electromotive forces (EMFs) from switching function, which brings shift degrades precision position speed estimations. article, frequency-adaptive complex-coefficient (FACCF) adopted replace LPF. Since FACCF has no amplitude attenuation...
Abstract The relationship between the immune cell and tumor occurrence progression remains unclear. Profiling alterations in microenvironment (TIME) at high resolution is crucial to identify factors influencing cancer enhance effectiveness of immunotherapy. However, traditional sequencing methods, including bulk RNA sequencing, exhibit varying degrees masking cellular heterogeneity immunophenotypic changes observed early late-stage tumors. Single-cell (scRNA-seq) has provided significant...
Abstract The management of predator-prey systems, particularly those with discontinuous harvesting, plays a crucial role in maintaining ecological balance and ensuring the sustainable use renewable resources. Despite importance this topic, dynamics diffusive models harvesting have not been thoroughly explored existing literature. This study addresses gap by investigating predator–prey model incorporating function. We establish existence boundedness solutions, analyse conditions under which...
In this paper, we propose and investigate a memory-based reaction-diffusion equation with nonlocal maturation delay homogeneous Dirichlet boundary condition. We first study the existence of spatially inhomogeneous steady state. By analyzing associated characteristic equation, obtain sufficient conditions for local stability Hopf bifurcation state, respectively. For analysis, geometric method prior estimation techniques are combined to find all values because includes non-self-adjoint...
Erythropoietin (Epo) is a cytokine that controls the production of red blood cells (RBCs). Epo acts continuously on RBC precursors to prevent apoptosis, so it important maintain high levels activity when treating anemic patients. We describe here modified human [Epo(NDS)] with mutations His32Gly, Cys33Pro, Trp88Cys and Pro90Ala result in rearrangement disulfide bonding pattern from Cys29-Cys33 Cys29-Cys88 that, context an Fc-Epo(NDS) fusion protein, lead significantly improved properties....
<p style='text-indent:20px;'>We study the Turing-Hopf bifurcation and give a simple explicit calculation formula of normal forms for general two-components system reaction-diffusion equation with time delays. We declare that our can be automated by Matlab. At first, we extend method given Faria in 2000 to Hopf-zero singularity. Then, an are given. Finally, obtain possible attractors original near singularity further analysis forms, which mainly include, spatially non-homogeneous steady-state...
In this paper, the dynamics of a diffusive ratio-dependent Holling–Tanner model subject to Neumann boundary conditions is considered. We derive for existence Hopf, Turing, Turing–Hopf, Turing–Turing, Hopf-double-Turing and triple-Turing bifurcations at unique positive equilibrium. Furthermore, we study detailed in neighborhood Turing–Hopf bifurcation by using normal form method. Our results show that can give rise formation temporal spatio-temporal patterns. particular, theoretically prove...
This paper proposes an improved sliding-mode observer (SMO) for the sensorless control of permanent-magnet synchronous motor (PMSM). In conventional SMO, a lowpass filter (LPF) is used to reduce chattering caused by signum function. That will bring phase lag and affect precision observer. The SMO adopts self-adapting complex-coefficient (SACCF) replace LPF. SACCF has no amplitude attenuation at mid-frequency. Thus, it can extract back electromotive force (EMF) without distortions while...
Recombinant baculoviruses with different promoter and regulatory elements were constructed to enhance the expression of target protein boost efficacies avian influenza vaccine. Hemagglutinin gene was cloned into baculovirus transfer vectors driven by cytomegaloviru (CMV) White spot syndrome virus immediate-early one (WSSV ie1) respectively, elements. The recombinant directly used as vaccines immunize specific pathogen-free chickens. levels BV-S-HA BV-S-ITRs-HA respectively 2.43 2.67 times...
In this work, we study the stability of inverse Sturm‐Liouville problem with Neumann boundary condition at left ending point and Robin right point. We estimate difference two potentials in sense weakness ‐norm, terms spectra. Since may become after small perturbation spectra, our results also include situation.