The development of high-performance aluminum alloys remains a critical challenge in industrial applications, among which crossover Al-Mg-Zn alloys have recently attracted much attention due to their excellent mechanical performance. However, the slow ageing response limits their wider application as compared to 7xxx aluminum alloys. To overcome the limitation, this study proposes a synergistic strategy incorporating Cu microalloying and combined pre-treatments (pre-ageing and pre-deformation). A high number density of T-phase precursors and dislocations are formed during combined pre-treatments, which prompts the formation of strengthening precipitates during the final ageing and results in uniform precipitate distribution. The precipitate free zone (PFZ) is narrowed and precipitate-sparse zones (PSZ) are eliminated as well. Therefore, a simultaneous enhancement of ageing kinetic and mechanical properties is achieved. Such improvement is further amplified by Cu addition, which assists the nucleation of GPI zones and enhances the dislocation density during pre-treatments. The Cu-modified alloy with optimized heat treatments achieves an exceptional strength-ductility synergy (520 MPa yield strength with 11
This study investigated the effects of varying concentrations of purslane extract (PE) (0, 0.05, 0.10, 0.15, 0.20, and 0.40 mg mL−1) on the gelling properties of pork myofibrillar proteins (MPs) under a Fenton oxidation system, with 0.02 mg g−1 BHA as a positive control. Both BHA and PE alleviated the deterioration of gel properties induced by oxidation, as evidenced by suppressed cooking loss, improved water-holding capacity (WHC), and enhanced texture characteristics. Notably, PE at 0.20 mg mL−1 exhibited the most pronounced effects, leading to increased elasticity, cohesiveness, gumminess, and resilience, as well as maximal storage (G′) and loss (G″) modulus. LF-NMR analysis revealed that oxidation promoted the migration of water from immobilized to free states, a trend reversed by BHA and PE. The immobilized water content was significantly higher at 0.20 mg mL−1 PE than in the oxidized and BHA groups (P < 0.05), indicating an improved gel network. Microstructural analysis further confirmed that the addition of 0.20 mg mL−1 PE under oxidative conditions significantly improved the three-dimensional network structure of MPs gels. However, further increasing the PE concentration to 0.40 mg mL−1 deteriorated all gel properties, highlighting a concentration-dependent regulatory effect. Therefore, optimizing PE concentration is critical for practical applications. These findings provide a theoretical basis for using PE as a natural antioxidant in gel-type meat products.
In this paper, we introduce a new proximal-type regularization algorithm with a simple bi-stepsize rule for solving split monotone variational inclusions. The bi-stepsize rule is aimed to avoid the Lipschitz assumption of cost operator, which is usually unknown or difficult to estimate in practice. The regularization is used to establish strong convergence theorems for split monotone variational inclusions in real Hilbert spaces. Additionally, we give some numerical examples and applications in image reconstruction to illustrate the performance and superiority of the new proposed algorithm.
This study examines the interactions among online literature platforms, online literature studios, and online literature writers by exploring the organizational dynamics of prosumers within the production processes of Chinese online literature platforms. In-depth interviews with 30 online literature writers, 6 editors, and 2 studio owners revealed that online literature studios are self-organizing labor collectives formed by writers based on shared economic interests. These studios seek market-driven benefits from the grassroots level in relation to the platforms. Considering the strong market orientation of online literature studios, platforms tend to both allow and regulate them. As a result, online literature studios have evolved into intermediary entities within the platforms’ literary production systems, serving as critical conduits for implementing platform algorithms. Writers become motivated to proactively join these studios in pursuit of economic stability. This evolution in labor choices among online literature writers reflects a transition from relational embedding to organizational embedding, signifying the emergence of a form of commercial solidarity initiated by workers from below. However, this also gives rise to structural tension stemming from labor differentiation.
As a pivotal driver that facilitates the concentration of green innovation elements in key areas of energy conservation and emission reduction, new quality productive forces (NQPF) play a crucial role in carbon emission governance. Based on panel data from 108 prefecture-level cities in the Yangtze River Economic Belt (YREB) spanning 2010 to 2022, this study employs a mediation effect model and a spatial Durbin model (SDM) to empirically examine the mechanisms through which NQPF influence carbon emission performance (CEP), measured by carbon emission intensity (CEI) and carbon emission efficiency (CEE), as well as their spatial spillover effects. The results reveal that NQPF significantly reduces CEI and enhances CEE, and these findings remain robust across multiple tests. Mechanism analysis indicates that NQPF affects urban CEP through two main pathways: green technological innovation and industrial structure rationalization. Furthermore, environmental regulation intensity plays a significant positive moderating role in both pathways. Heterogeneity analysis shows that the inhibitory effect of NQPF on CEI is more pronounced in cities with lower levels of economic development, lower emission intensity, and in designated low-carbon pilot cities. In contrast, the positive effect of NQPF on improving CEE is more significant in cities with higher levels of economic development, higher emission intensity, and low-carbon pilot cities. Spatial effect analysis indicates that NQPF not only improves local CEP but also generates positive spillover effects on neighboring cities. This study provides both theoretical insights and practical implications for enhancing green technology innovation, promoting industrial structure optimization, and improving environmental regulation policies.
