Search

Drawing on the diffusion of innovation theory, we argue that the development of digital economy has a positive effect on urban economic resilience. Using panel data from 284 cities in China from 2011 to 2018, we empirically examine the relationship between digital economy and urban economic resilience. We find a positive and significant link between them, mediated by technological innovation and entrepreneurial vitality. Moreover, the heterogeneity analysis shows that the impact of digital economy is most pronounced in smaller cities, with its effects diminishing in larger cities and megacities. Our results underscore the importance and the direction of fostering digital economy development. [ABSTRACT FROM AUTHOR]

A new chloro-containing γ-butyrolactone derivative 1, together with eight known metabolites (2–9), were isolated from the mangrove endophytic fungus Neofusicoccum parvum Y2NBKZG1016. Its structure was identified as (4S,5S,6S,7R)-4-(3-chloro-1,2-dihydroxybutyl)-butyrolactone (1) by spectral data and chemical method. The otoprotective effects of all compounds and the ability of 1 to inhibit the release of lipopolysaccharide (LPS)-induced nitric oxide (NO) from RAW264.7 were determined. [ABSTRACT FROM AUTHOR]

In this paper, we study the Cauchy problems for quasilinear hyperbolic inequalities with nonlocal singular source term and prove the nonexistence of global weak solutions in the homogeneous and nonhomogeneous cases by the test function method. [ABSTRACT FROM AUTHOR]

This paper is devoted to proving some new nonexistence theorems for a class of quasilinear parabolic differential inequalities with a singular potential term and nonlocal source term in the case of homogeneous and non-homogeneous by the test function method. [ABSTRACT FROM AUTHOR]