We study the quantum and classical evolution of a system of three harmonic modes interacting read more via a trilinear Hamiltonian.With the modes prepared in thermal states of different temperatures, this model describes the working principle of an absorption refrigerator that transfers energy from a cold to a hot environment at the expense of free
Extraction of Phylllantus amarus plant powder using hot percolation and cold percolation techniques revealed the presence of alkaloids, flavonoids, terpenoids, volatile oil, saponin, tannin, anthraquinone, cardiac glycosides, phenolic compounds, reducing and non- reducing sugars.The hot percolation crude extract also revealed higher scavenging acti
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