Thẻ: SDG9-Công nghệ – sáng tạo và phát triển hạ tầng

Abstract In this paper, we propose two projected dynamical systems for solving inverse quasi-variational inequality problems in finite-dimensional Hilbert spaces–one ensuring finite-time stability and the other guaranteeing fixed-time stability. We first establish the connection between these dynamical systems and the solutions of inverse quasi-variational problems. Then, under mild conditions on the operators and parameters, we...

Abstract This study explores the crack opening dynamics in Mode-I fracture of pre-stretched viscoelastic elastomer sheets under varying strain energy release rate (Γ). The degree of viscoelasticity was widely tuned by altering the mixing ratio of telechelic precursor chains and a tri-functional cross-linker, producing elastomers with different amounts of relaxation components such as dangling chains...

Abstract Pyrene belongs to the highly toxic class of polycyclic aromatic hydrocarbons and has carcinogenic properties; thus, the kinetics of its OH-initiated oxidation is theoretically investigated in a wide range of conditions (T = 200-2000 K and P = 7.6-76,000 Torr). The T & P-dependent kinetic behaviors were studied within the stochastic RRKM-based master equation framework with the potential energy profile...

Abstract We establish the nonexistence of positive stable solutions u ∈ W loc 1 , p ( R N ) to the singular quasilinear anisotropic equation Δ B H u = u − q in R N , where q > 0 , in low dimensions. Under similar assumptions, we further prove that, for the...

Abstract This study investigates the performance of a sponge membrane bioreactor (SMBR) integrated with waste iron scraps as an innovative approach to enhance nitrogen removal from municipal wastewater. The incorporation of iron scraps substantially improved the total nitrogen (TN) removal efficiency, increasing from 35.3 ± 10.4 % to 62.4 ± 26.9 %, while maintaining stable chemical oxygen demand (COD) removal above...

Abstract The chemical and microstructural features of poly(styrenesulfonic acid) (PSSA)-grafted poly(ethylene-co-tetrafluoroethylene) (ETFE) polymer electrolyte membranes (ETFE-PEMs) through preparation procedures and grafting degree (GD) are investigated by solid-state 13C cross polarization/magic angle spinning solid-state nuclear magnetic resonance (13C CP/MAS NMR) spectra, atomic force microscope (AFM), X-ray diffraction (XRD), and Doppler broadening (DB) of positron-annihilation radiation measurement. Especially,...

Abstract In the present work, composites of SnO2 and biocarbon from cashew residue were applied and reported for the first time as anode materials of Li-ion batteries. The composites were developed via a two-step synthesis route consisting of pretreating the cashew residue to create biocarbon, followed by compositing the biocarbon with SnO2. The calcination temperatures were...