Stable isotope approaches for assessing spatial and seasonal patterns of organic pollution in a high-latitude coastal marine ecosystem.

Simulated marine weathering of PVC: Surface transformations and microbial interactions.

Spatiotemporal dynamics and ecotoxicological risks of current-use pesticides (CUPs) in Korean coastal waters: The critical role of monsoon flushing.

Intelligent monitoring of coastal outfalls via multi-source remote sensing image fusion.

Physics guided machine learning for durability assessment of fiber reinforced polymer bar reinforced seawater and sea-sand concrete beams in marine environments

Experimental study of the settling characteristics of spherical microplastics under oscillating grid turbulence.

Vibrio splendidus is an opportunistic pathogen widely distributed in marine environments, animal tissues and seabed sediments. It can infect various marine animals, resulting in high mortality and substantial economic losses. Exposure to high concentrations of tetracycline induces V. splendidus to form persister cells, which exhibit tolerance to multiple classes of antibiotics and pose a serious threat to aquaculture by promoting disease outbreaks. Previous studies have suggested that metabolic regulation is a key mechanism for maintaining the dormant and low-energy state of persister cells. In this study, we found that the accumulation of histidine-derived metabolites significantly reduced the susceptibility of V. splendidus to tetracycline. Transcriptomic analysis revealed a marked upregulation of genes involved in histidine metabolism and exogenous supplementation of histidine significantly increased the proportion of persister cells, suggesting that histidine plays a promotive role in persister formation. Furthermore, histidine enhanced the membrane potential and upregulated the expression of the efflux pump gene tolC, thereby contributing to the formation of tetracycline-induced persister cells. These findings reveal a previously unrecognized role of histidine metabolism in antibiotic tolerance and provide a theoretical basis for understanding persister cell formation in V. splendidus.

Rare earth elements in muscle tissue of common Black Sea fish: Concentrations, fractionation patterns, biochemical associations, and human health risk assessment.

Weathered oil fragments as an ecotoxic legacy of ocean oil spills: Developmental and redox disruption in necrophagous Chrysomya albiceps larvae.

• BS7910 FCGR for R < 0.5 is up to 3.6 × over-conservative for S355 in free corrosion. • Removing this conservatism could improve remaining life by 109%. • For the investigated database, statistical weighting had a negligible impact. • HAZ data fit a bilinear curve more closely, while BM data fit a linear one. • S355J2 + N subgrade displayed the highest FCGR, while S355G10 + M showed the lowest. The recommendations for fatigue crack growth rate (FCGR) in British Standard BS 7910 are based on experimental data which are multiple decades old, and the FCGR laws were constructed using data from multiple structural steel grades. The present study sought to gather more recent FCGR data for S355 steel in a marine free-corrosion environment, which can be applied for use in offshore wind turbine structural integrity life prediction. The collected data were filtered to include only valid Stage II (Paris region) data in the analyses. A method for fitting a bilinear regression curve was developed along with bias reducing weighted regression methods. The resulting bilinear trend shows up to 3.6 times lower FCGR relative to the BS 7910 recommendations for the free-corrosion environment. The analysed S355 data indicated that a bilinear fit best described the FCGR in the heat affected zone, whereas a simple linear fit was appropriate for the base metal. The S355 subgrades, J2 + N, G8 + M and G10 + M, presented considerable variance in mean FCGR, with J2 + N having the highest FCGR and G10 + M the lowest. When considered in the context of offshore wind turbine service life, the overall S355 FCGR reduction relative to the BS 7910 free corrosion curve results in a just over double life expectancy for a 4 × 20 mm surface semi-elliptical flaw size, based on the conservative upper bound analysis. This increase in life could prove invaluable for corrosion protection system repair timescales, considering the need to carefully plan the maintenance time window to avoid adverse weather conditions.

Acute copper exposure alters respiratory physiology and upper thermal limits in green crab (Carcinus maenas) at three global capture sites.

Phycocyanin-mediated silver nanoparticle/PDMS nanocomposite coatings: Field-validated antifouling performance in the marine environment of the Persian Gulf.

Environmental risks from world war shipwrecks: Field-based biomarker evidence from caged mussels in the North Sea.

Hybrid experimental-QSAR-artificial intelligence framework for chronic ecological risk assessment of emerging pollutants in coastal environments.

Sediment-porewater dynamics of neurotoxin domoic acid in marginal seas of northern China: Seasonal prevalence and ecological risks in mariculture bays.

The interactions between dissolved organic carbon and marine microbial communities across diverse climatic zones.

Polyethylene microplastics as a vector of tributyltin in Mytilus galloprovincialis and their consequences.

Syntrophic interactions driving anaerobic methane oxidation in deep-sea cold seeps revealed by DNA-SIP.

Settling behaviour of pristine, UV-weathered, and biofouled particles from organic corrosion protection coatings under varying environmental conditions.

A recyclable rhamnolipid-modified magnetic bimetallic biochar demulsifier for oil-water separation in cold and saline environments.