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a mild and green method has been developed for the preparation of coumarins derivatives through the one-pot reactions. in our study,various phenols and ethyl acetoacetate compound in which we used silica-supported boron sulfonic acid [sio2/b(so4h)3] as a new, highly efficient and tri-functional inorganic brønsted acid catalyst were processed under solvent-free condition and thermal. the catalys...

abstract background: migraine is a primary headache disorder that affects the neurovascular system. recent studies have shown that consumption of some fatty acids such as omega‑3 fatty acids improves migraine symptoms. the aim of the present study is to assess the association between usual intake of fatty acids such as eicosapentaenoic acid (epa), docosahexaenoic acid (dha), and saturated fatty...

background: co-supplementation of unsaturated fatty acids (fas) with saturated fas may decrease the adverse effects of saturated fa-induced lipotoxicity. the objective of the present study was to evaluate the effect of palmitoleic acid (unsaturated fatty acid) on palmitic acid (saturated fatty acid) induced lipotoxicity criteria in the primary culture of adult rat cardiomyocytes. methods: cells...

the chemical composition, in situ ruminal degradability coefficients of dry matter (dm), and nutrient digestibility in sheep were evaluated for corn silage (cs) treated (fresh weight basis) with different levels of a commercial bacterial inoculant (i) as follows: (1) untreated cs (control); (2) cs + i at half of the recommended level; (3) cs + i at the recommended level (3  1010 colony forming...

this paper describes the development, electrochemical characterization and utilization of novel modified molybdenum (vi) complex-carbon nanotube paste electrode for the electrocatalytic determination of ascorbic acid (aa). the electrochemical profile of the proposed modified electrode was analyzed by cyclic voltammetry (cv) that showed a shift of the oxidation peak potential of aa about 235 mv ...

background & aim: marigold or calendula officinalis l. is a annual herb belongs to the asteraceae family.  marigold is a valuable medicinal plant which is used in pharmaceutical industry.  in addition, this plant is cultivated as an ornamental plant. aim of current study was to evaluate the effect of different concentrations of jasmonic acid (ja), and salicylic acid (sa) on phytochemical pr...

the silica boron sulfuric acid nanoparticles (sbsans) as an efficient heterogeneous solid acid catalyst with both brønsted and lewis acidic sites catalyzed the preparation of bis-4-hydroxycoumarin derivatives using reaction of aldehydes and 4-hydroxycoumarin under mild and solvent-free condition at room temperature. this new and efficient methodology has advantages in comparison with currently ...