in this paper we introduce the notions of g∗l-module and g∗l-module whichare two proper generalizations of δ-lifting modules. we give some characteriza tions and properties of these modules. we show that a g∗l-module decomposesinto a semisimple submodule m1 and a submodule m2 of m such that every non-zero submodule of m2 contains a non-zero δ-cosingular submodule.

The effect of modification ?-FeOOH with niobium, applied to dehydration reaction xylose, was evaluated by experimental and theoretical methods. data confirmed, namely the characteristic peaks in X-ray diffractometer analysis, that materials were obtained. Inductively coupled plasma mass spectrometry analysis defined percentage Nb as 0 for pure 9.5 wt. % (?-FeOOH/Nb) doped. In relation obtaining...