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As a crucial measure to promote the coordinated development of urban and rural areas in developing countries (such as China), how to provide and manage rural infrastructure investment is a major challenge. In line with the implementation of a coordinated urban–rural development strategy, inclusive growth provides direction for rural infrastructure investment. Taking Chongqing, China, as an example, informed by the goals of inclusive growth, this study develops a system dynamics model to investigate the interaction between interdependent infrastructure systems and socioeconomic systems and to explore priorities for rural infrastructure investment. The results indicate the following: (1) more rural infrastructure investment is still needed in Chongqing by 2030; and (2) based on the importance of all types of rural infrastructures for the impact of inclusive growth goals, the ratio of budget shares invested in each dimension is, in descending order, environment infrastructure, energy infrastructure, communication infrastructure, transportation infrastructure, education infrastructure, and medical infrastructure. The approach and results of this study allow governments to assess the contribution of infrastructure provision to the goals of inclusive growth and to make better-informed infrastructure investment options. [ABSTRACT FROM AUTHOR]

When the high-density polyethylene sheath of bridge cables is not cracked, the galvanized high-strength steel wires are not corroded and only subjected to the fatigue loads of vehicles (called prefatigue). Some studies have confirmed that the corrosion rate and fatigue life of certain alloy materials can be affected by the prefatigue, which is not clear for the corroded steel wires in bridge cables. In this paper, the mechanical properties of high-strength steel wires considering the prefatigue effect under fatigue-corrosion alternating loading were studied, and the residual fatigue life was predicted. First, the corrosion characteristics of high-strength steel wires with different degrees of prefatigue and corrosion were explored through an optical microscope and a surface roughness measuring instrument. Then, the static mechanical properties and fatigue life of corroded steel wires were obtained. The results show that when the prefatigue effect is greater than the corrosion effect, the surface roughness of the corroded steel wires decreases significantly, leading to a smoother surface and a weaker stress concentration. Compared with the results in the "corrosion + fatigue" case, the fatigue life of the steel wires in the "fatigue (prefatigue) + corrosion + fatigue" case may increase. The prefatigue effect has no significant effect on the static performance of the corroded steel wires. Finally, a fatigue life prediction model of corroded steel wires considering the effect of prefatigue was established based on the aforementioned experimental data. [ABSTRACT FROM AUTHOR]

Carbon capture, utilization and storage (CCUS) technology is an effective way to mitigate the greenhouse effect. Using solid adsorbents to capture CO2 is considered to be one of reliable ways of reducing CO2 emissions. MgO-based adsorbents have attracted much attention due to their wide source, low regeneration temperature and high theoretical adsorption capacity in various solid adsorbents. However, the formed MgO-based adsorbents still face the problems of low mechanical strength, poor stability and easy to escape from the reactor, so they are difficult to be widely used in industry. The effects of different granulation methods and granulation process conditions on the CO2 adsorption performance of MgO-based adsorbents were summarized. In the granulation process, the MgO-based adsorbents with smaller particle sizes have faster carbonation rates and lower wear rates. The chemical properties and mechanical strength of adsorbent particles can be improved by adding proper amount of granulation additives and steam. However, higher calcination temperatures can exacerbate sintering and wear of absorbent particles. In the future, the research should focus on developing simplified processes, low costs and good cycle stability, and prepare absorbent particles with both excellent CO2 adsorption performance and mechanical properties for industrial-scale CO2 capture. [ABSTRACT FROM AUTHOR]