Nigella sativa Linn. (Ranunculaceae) (N. sativa), commonly known as black seed or black cumin, is an herbaceous plant, mainly grows in the Middle East, Central Europe and Western Asia. It is widely used in indigenous system of medicine for treatment of numerous disorders for over 2 000 years[1-3]. Its seed oil had been widely used in Arab traditional of medicine for the treatment of arthritis, ...

We applied transmission electron microscopy and densitometric image analysis to measure the cell volume (V) and dry weight (DW) of single bacterial cells. The system was applied to measure the DW of Escherichia coli DSM 613 at different growth phases and of natural bacterial assemblages of two lakes, Piburger See and Gossenköllesee. We found a functional allometric relationship between DW (in f...

A nucleotide-by-nucleotide density fitting procedure has been successfully developed and has been applied to an analysis of a domain of the Tetrahymena ribozyme and a TBP-DNA interaction. This procedure is described in a paper that has been submitted for publication [Pastor, N., Weinstein, H., Jamison, E. & Brenowitz, M. A Detailed Interpretation of OH Radical Footprints in a TBP-DNA Complex Re...

A simple, sensitive and rapid high performance thin layer chromatographic (HPTLC) method has been developed and validated for quantitative estimation of Venlafaxine hydrochloride in bulk and in capsule formulation. The drug was chromatographed on silica gel 60F254TLC plate using methanol: ammonia (4.5:0.5v/v) as mobile phase. Densitometric scanning of was carried out at 224 nm and resolution wa...

A stability-indicating high-performance thin-layer chromatographic (HPTLC) method has been developed for the determination of terbutaline sulfate (TBS) as a bulk drug and in pharmaceutical formulations (submicronized dry powder inhalers). The separation was achieved on TLC aluminum plates precoated with silica gel 60F-254 using chloroform-methanol (9.0:1.0 v/v) as mobile phase. The densitometri...