A5022671230- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Fluid Dynamics and Vibration Analysis
- Dark Matter and Cosmic Phenomena
- Vibration and Dynamic Analysis
- Wind and Air Flow Studies
- stochastic dynamics and bifurcation
- Radiomics and Machine Learning in Medical Imaging
- Image and Signal Denoising Methods
- AI in cancer detection
- Neutrino Physics Research
- Radioactive Decay and Measurement Techniques
- Atomic and Subatomic Physics Research
- Amino Acid Enzymes and Metabolism
- Aerodynamics and Fluid Dynamics Research
- Phytoestrogen effects and research
- Fluid Dynamics Simulations and Interactions
- Black Holes and Theoretical Physics
- Ecosystem dynamics and resilience
- Artificial Intelligence in Healthcare and Education
- Biochemical effects in animals
Qingdao University of Science and Technology
2024-2025
Sinochem Group (China)
2024
Shenyang Sinochem Agrochemicals R&D Co., Ltd. (China)
2024
Qingdao University
2024
Affiliated Hospital of Qingdao University
2024
Institute of High Energy Physics
2005-2021
Jinan University
2006
Using a data sample with total integrated luminosity of 10.0 pb$^{-1}$ collected at center-of-mass energies 2.6, 3.07 and 3.65 GeV BESII, cross sections for $e^+e^-$ annihilation into hadronic final states ($R$ values) are measured statistical errors that smaller than 1%, systematic about 3.5%. The running strong interaction coupling constants $α_s^{(3)}(s)$ $α_s^{(5)}(M_Z^2)$ determined from the $R$ values.
We report the first observation of J/ψ→ηK*0K¯*0 decay in a J/ψ sample 58 million events collected with BESII detector. The branching fraction is determined to be (1.15±0.13±0.22)×10−3. selected signal event further used search for Y(2175) resonance through J/ψ→ηY(2175), Y(2175)→K*0K¯*0. No evidence seen. An upper limit Br(J/ψ→ηY(2175))⋅Br(Y(2175)→K*0K¯*0)<2.52×10−4 set at 90% confidence level.
In practical engineering applications, Vortex-Induced Vibration (VIV) poses significant hazards to objects. Objects located near the free surface, such as those on a water platform, will also be affected by VIV. Therefore, suppression of cylindrical vibration surface should paid more attention. this paper, effect pair jets cylinder is studied basis two-dimensional model. To investigate jet flows cylinders at different submerged depths four depth ratios (H* = 1, 2, 3, and 10) were studied,...
A square cylinder is an ideal geometry for investigating both vortex-induced vibration (VIV) and galloping instabilities. The present work aims to evaluate the significance of in-line freedom on flow-induced vibrations (FIVs) a subjected flow. Numerical simulations were conducted two-degree-of-freedom (2-DOF) one-degree-of-freedom (1-DOF) with different angles attack. mass ratio, which structural divided by displaced fluid mass, set 5, Reynolds number fixed at 200. Detailed comparisons...
Using 14M $\psi(2S)$ events accumulated by BESII at the BEPC, a Covariant Helicity Amplitude Analysis is performed for $\psi(2S)\to\pi^+\pi^-J/\psi, J/\psi\to \mu^+\mu^-$. The $\pi^+\pi^-$ mass spectrum, distinctly different from phase space, suggests $\sigma$ production in this process. Two theoretical schemes are used global fit to data. results consistent with existence of $\sigma$. pole position determined be $(552^{+84}_{-106})-i(232^{+81}_{-72})$ MeV/$c^2$.
Daidzein (DAN) is an isoflavone, and it often found in its natural form soybean food supplements. DAN has poor bioavailability owing to extremely low water solubility first-pass metabolism. Herein, we hypothesized that a bioactivatable amino acid-bearing carbamate prodrug strategy could increase the metabolic stability of DAN. To test our hypothesis, nine acid prodrugs were designed synthesized. Compared with DAN, optimal (daidzein-4′-O-CO-N-isoleucine, D-4′-I) demonstrated enhanced improved...
Using $5.8 \times 10^7 J/\psi$ events collected in the BESII detector, radiative decay $J/\psi \to \gamma \phi K^+ K^- K^0_S K^0_L$ is studied. The $\phi\phi$ invariant mass distribution exhibits a near-threshold enhancement that peaks around 2.24 GeV/$c^{2}$. A partial wave analysis shows structure dominated by $0^{-+}$ state ($\eta(2225)$) with of $2.24^{+0.03}_{-0.02}{}^{+0.03}_{-0.02}$ GeV/$c^{2}$ and width $0.19 \pm 0.03^{+0.06}_{-0.04}$ product branching fraction is: $Br(J/\psi...
The decays of $\jpsi$ and $\psip$ to ${n}{K^0_S}\bar{\Lambda}+c.c.$ are observed measured for the first time, perturbative QCD ``12%'' rule is tested, based on $5.8 \times 10^7$ $1.4 events collected with BESII detector at Beijing Electron-Positron Collider. No obvious enhancement near $n\bar{\Lambda}$ threshold in $\jpsi \to {n}{K^0_S}\bar{\Lambda}+c.c.$ observed, upper limit branching ratio {K^0_S} X, X n \bar \Lambda$ determined.
By analyzing approximately 33 pb−1 of sample data collected at and around 3.773 GeV with the BES-II detector BEPC collider, we directly measured branching fractions for neutral charged D inclusive semimuonic decays to be BF(D0→μ+X)=(6.8±1.5±0.8)% BF(D+→μ+X)=(17.6±2.7±1.8)%, determined ratio two BF(D+→μ+X)BF(D0→μ+X)=2.59±0.70±0.25.
The unmanned aerial vehicle equipment is inevitably interfered by environmental noise in the process of image acquisition. Suppress to enhance images a hot topic that scholars strive study. stochastic resonance theory can transform signal energy specific intensity into useful energy. Therefore, this paper proposes an denoising algorithm based on adaptive two-dimensional unsaturated system. By building dynamic nonlinear system model, peak ratio and structural similarity output are used as...