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The latest research explores the manufacture of a hybrid glass fiber reinforced polyester resin composite. Functionalized carbon nanotubes with glass fiber are integrated into the composite, as a substrate. Polyester resin can be used as a substrate. The rectangular sheets were used to create GFRPs samples by hand lay-up method. With 77% rise in comparison to the control sample, f-MWCNTs displayed the highest tensile strength and impact energy of 79 MPa, indicating a 31. 6 percent rise and 1. 7 Nm with 77% increase, respectively. The polyester resin's poor bond between the polyester resin and the GF promoted the composite strength from 40 MPa to 128 MPa, but a layer drop in the composite strength to 100 MPa was due to the poor contact between the polyester resin and GF. However, the agglomeration of these nanoparticles and void formation in the composite degraded the mechanical stability of the composite, such as compressive strength and void formation.
Source link: https://doi.org/10.1371/journal.pone.0279647
Although eelgrass is the most common seagrass species in northern cold-temperate regions, and although sedimentary carbon stocks have been surveyed across regions, reports regarding CO2 removal capacity as carbon sinks remain scarce. The carbon sink capacity in Z. marina areas is in accordance with other Z. marina areas, but it is very low compared to other seagrass species and regions globally. About half of the sedimentary carbon accumulation came from macroalgae biomass, which highlights the importance of non-seagrass derived material for the carbon sink function of seagrass meadows in the area. The low sediment loading rates and the relatively thick sediment deposits indicate that the carbon stocks have likely been stored for a long time, and that the observed disappearance of seagrass meadows in the Swedish Skagerrak region and subsequent erosion of the sediment may have possibly helped offset centuries of carbon sequestration.
Source link: https://doi.org/10.1371/journal.pclm.0000099
With the Public-Private Partnership mode playing an increasingly important role in PPP projects, encouraging low-carbon technology innovation in PPP projects not only helps to reduce the carbon pollution of infrastructure but also plays a key role in the low-carbon transition of the construction industry. The paper provides two different evolutionary game models respectively under the government payment mechanism and consumer payment scheme based on evolutionary game theory in order to clarify the evolutionary mechanism of low-carbon technology innovation diffusion among Chinese stakeholders under PPP projects' unique payment system.
Source link: https://doi.org/10.1371/journal.pone.0279493
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