Pollen analysis is a commonly used method to interpret vegetation and environmental change. The standard pollen preparation technique in minerogenic sediments involves the use of hydrofluoric acid (HF) which highly toxic. Currently European legislation requires that hazardous chemicals should be substituted with less or non-toxic if possible. In present paper authors introduce safer method, bas...

The use of Cs0.5H0.5PW12O40 insoluble salt as a superacid promoter in the catalyst layer of a polymer electrolyte membrane fuel cell (PEMFC) has been investigated. An increase of performance has been recorded at intermediate temperatures (110–130 °C) and under low relative humidity (R.H.). The promoter appears to mitigate the ionomer dry-out effects in the catalytic layer and produces an increa...

Biologically as well medicinally important two different organic scaffolds, viz. benzimidazole and quinazoline, are present in the class of heterocyclic compounds called benzimidazoquinazolinone. Similarly, indolylxanthenones containing moieties such indole xanthene. In this work, a new green protocol for synthesis benzoimidazoquinazolinone indolylxanthenone derivatives was attained under envir...