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Increasing anthropogenic stressors influenced the water quality and shifted trophic status of northern Lake Tana Gulf, Ethiopia.
Heliyon
January 2025
Department of Zoological Sciences, Addis Ababa University, 1176, Addis Ababa, Ethiopia.
Nutrients in an aquatic system determine productivity, integrity and ecological status of the aquatic system. However, the excessive enrichment of these nutrients emanating from severe anthropogenic activity has substantially impacted water quality and biodiversity. There is diminutive information available on the water quality and trophic status of the northern Gulf of Lake Tana, Ethiopia due to accessibility difficulties.
View Article and Find Full Text PDFInvestigating the Restricted Dynamical Environment in and Around Aβ Peptide Oligomers in Aqueous Ionic Liquid Solutions.
J Phys Chem B
January 2025
Molecular Modeling Laboratory, Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
It is widely believed that the aggregation of amyloid β (Aβ) peptides into soluble oligomers is the root cause behind Alzheimer's disease. In this study, we have performed room-temperature molecular dynamics (MD) simulations of aggregated Aβ oligomers of different sizes (pentamer (O(5)), decamer (O(10)), and hexadecamer (O(16))) in binary aqueous solutions containing 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF]) ionic liquid (IL). Investigations have been carried out to obtain a microscopic understanding of the effects of the IL on the dynamic environment around the exterior surfaces and within the confined nanocores of the oligomers.
View Article and Find Full Text PDFGenome-wide identification and functional roles relating to anthocyanin biosynthesis analysis in maize.
BMC Plant Biol
January 2025
Research Institute of Biology and Agriculture, School of Chemistry and Biological Engineering, Shunde Innovation School, Zhongzhi International Institute of Agricultural Biosciences, University of Science and Technology Beijing, Beijing, 100083, China.
Background: Anthocyanin is an important class of water-soluble pigments that are widely distributed in various tissues of plants, and it not only facilitates diverse color changes but also plays important roles in various biological processes. Maize silk, serving as an important reproductive organ and displaying a diverse range of colors, plays an indispensable role in biotic resistance through its possession of anthocyanin. However, the copy numbers, characteristics, and expression patterns of genes involved in maize anthocyanin biosynthesis are not fully understood.
View Article and Find Full Text PDFAn analytical study for predicting incipient motion velocity of sediments under ice cover.
Sci Rep
January 2025
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China.
This study investigates the critical impact of incipient sediment motion on sediment transport estimation and riverbed evolution prediction. In this research, we examine the effects of ice cover on the vertical distribution of flow velocity, establishing a mathematical relationship between the vertical average flow velocities in open channel and ice-covered flows. This leads to the derivation of a formula for incipient motion velocity under ice cover.
View Article and Find Full Text PDFIntegrated ecological-health risk assessment of ofloxacin.
J Hazard Mater
January 2025
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P.R. China. Electronic address:
Antibiotics are emerging contaminants of significant concern, while previous research has mostly focused on their ecological or health impacts in isolation. This limited systematic research on its overall risk and the uncertainty relating to the risk evaluation is also unclear. This study addressed this gap by examining both ecological or health impacts by integrating interspecies correlation models, species sensitivity distribution curves, and health risk evaluation.
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