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Mass movements and delta collapses are significant sources of tsunamis in lacustrine environments, impacting human societies enormously. Paleotsunamis studies play an essential role in understanding historical events and their consequences, along with their return periods. This study investigates a paleotsunami induced by a subaqueous mass movement during the Younger Dryas to Early Holocene transition, ca. 11,700 years ago in Lake Aiguebelette (NW Alps, France). Utilizing high‐resolution seismic and bathymetric surveys associated with sedimentological, geochemical, and magnetic analyses, we uncovered a paleotsunami triggered by a seismically induced mass transport deposit. Numerical simulations of mass movement have been conducted using a visco‐plastic Herschel‐Bulkley rheological model and corresponding tsunami wave modeled with dispersive and nondispersive models. Our findings reveal for the first time that dispersive effects may be negligible for subaqueous landslides in a relatively small lake. This research reconstructs a previously unreported paleotsunami event and enhances our understanding of tsunami dynamics in lacustrine environments. Plain Language Summary: This study explores an ancient landslide and its ability to potentially generate a tsunami. This event took place in Lake Aiguebelette, located in the NW Alps, France. By applying advanced underwater mapping techniques and computer modeling, we were able to reconstruct the origins and impact of this underwater prehistoric landslide. Our work revealed that this underwater landslide may have triggered a significant tsunami wave. These findings are crucial as they provide new insights into the dynamics of such geological events in lake environments, enhancing our understanding of their potential impacts and aiding in the preparation for future similar hazards. Key Points: Uncovered a 11,700‐year‐old subaqueous landslide‐induced paleotsunami in Lake Aiguebelette (NW Alps, France)Numerical model is constrained to reproduce the available geological dataFound dispersion effects to be of minimal importance in the modeling of this historical tsunami event [ABSTRACT FROM AUTHOR]

The present study was carried out to determine the effect of plant extract of Syzygium cumini and their silver nanoparticles (AgNPs) against the poultry pathogens. The plant extract was prepared in methanol, ethanol, ethyl acetate, chloroform, and n‐hexane. The results of phytochemical screening showed that the leaf extract of S. cumini have medicinally important phytochemical constituents. In the present study, AgNPs were synthesised by using an extract of S. cumini. Synthesised AgNPs were confirmed by Fourier‐transform infrared spectroscopy, ultraviolet–visible, and scanning electron microscopy. A surface plasmon resonance peak in absorption spectra showed absorption at 419 nm. The synthesised nanoparticles were found spherical in shape with the diameter range of 30–120 nm. The antimicrobial activity of crude extract and AgNPs was checked against the poultry bacterial pathogens by the agar well diffusion method. The authors' findings revealed that the crude extract and AgNPs have promising activities against all the test pathogens. It is concluded that the bioactive compounds from the extract of S. cumini and extract‐mediated AgNPs can be significantly used as an alternate poultry medicine to replace the available antibiotics, which have adverse side effects. [ABSTRACT FROM AUTHOR]

Cyclohexenone containing chalcones core is one important class of materials, which exhibit high nonlinear optical (NLO) responses and good crystallizability. The present study reports the successful development of six new fluorescent cyclohexenone derivatives (CDs) via conventional method. The molecular structures of these newly synthesized CDs were confirmed by using various such as 1H NMR, 13C NMR, FTIR, EIMS, UV-Vis spectroscopy and single crystal X-ray diffraction. The crystallographic data revealed that the spatial structure of the representative CD (4BE) belongs to monoclinic, P21/c space group. The results from luminescence studies show that the CDs molecules apparently emit intense green light at room temperature in aqueous media. The relative polarity and molecular of the CDs molecules were predicted by measuring the molecular electrostatic potential and frontier molecular orbital energy. In addition, the UV-Vis spectra, transition character and electronic structures of these CDs were computed by using quantum chemical methodology. It was interesting to note that the values of computed and experimental electronic transitions (λmax) were in good agreement and these CDs display high hyperpolarizability ( β) values. The present work will be helpful for systematical understanding of the structures and the optical properties of CDs for studying the that will suggest their potential application in . Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

New water-soluble pyridinium amines ( 2-8) were obtained by the solid-state reactions of 4-chloro-1-methylpyridin-1-ium triflate ( 1) and various primary aromatic amines. These compounds were characterized by 1H, 13C NMR, FTIR, UV-vis, and fluorescence spectroscopic methods along with single-crystal X-ray structure determination. The interaction potentials of all newly synthesized compounds with calf thymus DNA ( CT-DNA) were investigated by UV-vis and florescence spectroscopy accompanied by docking studies. UV-vis spectroscopy indicated that the binding of compounds with CT-DNA takes place via the intercalative mode. The compounds were also screened for their potential as antioxidants and enzyme inhibition agents. Some compounds displayed excellent butyrylcholine and acetylcholine esterase inhibition activities and were effective in scavenging the 2,2-diphenyl-1-picrylhydrazyl ( DPPH) radical in a dose-dependent manner comparable to a standard. [ABSTRACT FROM AUTHOR]