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72mg nicotine refers to a highly concentrated nicotine solution, often used for DIY e-liquid mixing. It contains 72 milligrams of nicotine per milliliter of liquid and is typically diluted to safer levels for vaping. Commonly mixed with propylene glycol (PG) or vegetable glycerin (VG), it allows vapers to customize nicotine strength and flavor. Handling such a high concentration requires caution, as it can be toxic if ingested or absorbed through the skin. Proper storage in childproof containers and protective measures,

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2S4 and CuxS are studied by DFT calculations. Theoretical calculations indicate that the excellent SERS behavior depends on charge transfer resonance. Our work provides a general approach for the construction of excellent metal compound semiconductor SERS active substrates.Multiple theoretical investigations on three new series of donor-bridge-acceptor substituted compounds are employed to aid in the design of NLO-phores with high first-hyperpolarizability β. The effect of varying the acceptor (rhodanine, thiohydantoin and thiobarbitur