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

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...

Abstract Safety concerns in lithium-ion batteries (LIBs) poses safety risks due to flammable liquid electrolytes and dendrite formation. Solid polymer electrolytes (SPEs) offer a safer alternative, though limited by low ionic conductivity and poor dendrite resistance. In this study, a SPE based on poly(ethylene oxide) (PEO) was modified to by blending with polyvinylidene fluoride (PVDF)...

Abstract The approach for detecting trace amounts of microplastics using surface-enhanced Raman spectroscopy (SERS) faces a significant challenge because the size of individual nanoparticles is considerably smaller than that of microplastics. Therefore, it is imperative to develop a type of nanoparticle that can form a larger surface area while still preserving excellent surface plasmon properties...

Abstract Advanced cryptographic devices employ multiscale countermeasures to bolster resilience against side-channel analysis (SCA). In masking-based defenses, secure substitution-boxes (S-boxes) and effective masking schemes are paramount. Additionally, the time-based hiding techniques, leveraging multiple clocks for individual encryption operations, offer significant protection. This article introduces a novel multiscale countermeasure: an improved tower field masking scheme integrated...

Abstract Let D be a division ring with center F, and let n > 1 be an integer. A known result due to Kursov asserts that if D is finite-dimensional over F, then the commutator width of the general linear group GLn(D) is at most one greater than that of GLn(D). In the absence of the finite-dimensionality assumption, recent research has made significant...