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

Abstract In this paper, an initial boundary value problem for a class of fourth-order viscoelastic wave equations is examined. Firstly, the local existence and uniqueness of solutions are proved by the linear approximation and the Faedo-Galerkin method. Next, a specified case of the original problem is considered. Then, under suitable assumptions and by continuity arguments,...

Abstract The extensive use of pesticides and synthetic dyes poses critical threats to food safety, human health, and environmental sustainability, necessitating rapid and reliable detection methods. Raman spectroscopy offers molecularly specific fingerprints but suffers from spectral noise, fluorescence background, and band overlap, limiting its real-world applicability. Here, we propose a deep learning framework based on...

Abstract The remediation of viscous oil spills and organic contaminants in harsh environments requires sorbents that possess not only adsorption capability but also exceptional thermal and chemical stability. Herein, we report the facile synthesis of a novel class of fluorinated copolyimine xerogels (XG-CoPI) following the solvent exchange method via the polycondensation of terephthalaldehyde (PA), 4,4′-oxydianiline (ODA),...

Abstract In this paper, we study the structure of locally generalized radical subgroups of the general skew linear group GLn(D) of degree n ≥ 1 over a division ring D. Among results, we show that if G is a locally generalized radical almost subnormal subgroup of GLn(D), then G is central provided D is not a locally finite field in case n...

Abstract In this study, endospore-forming bacteria were isolated, screened, and characterized from samples collected in Tan Phu protection forest for potential use in biofertilizer application. Twelve endospore-forming bacteria showed the ability to produce indole-3-acetic acid were evaluated. Based on the relative enzyme activity, siderophore production, phosphate and potassium solubilization, strain CN12 was selected. Strain CN12...

Abstract Ho Chi Minh City (HCMC), one of Southeast Asia’s fastest-growing megacities, has expanded its road networks, sluice gates, and flood-control structures in response to rapid urbanization and rising climate risks. While these grey-infrastructure interventions aim to protect the city, they have increasingly altered natural hydrological processes by reducing permeable surfaces, fragmenting wetlands, and obstructing...

Abstract EUV lithography is advancing towards high productivity and yield, but the thickness of the interface diffusion layer and surface roughness in Mo/Si multilayer mirrors critically impact optical performance, presenting a major obstacle. This work presents a comprehensive study on controlling the ion beam sputtering deposition parameters to optimize the interface quality, roughness, and microstructure...