The inversion field-effect transistor is the basic device of modern microelectronics and is nowadays used more than a billion times on every state-of-the-art computer chip. In the future, this rigid technology will be complemented by flexible electronics produced at extremely low cost. Organic field-effect transistors have the potential to be the basic device for flexible electronics, but still...

Abstract This work presents the first proof of concept for use molecular fluorescence signatures in medieval colours based on lac dye and brazilwood lake pigments. These two important dyes were tested as markers using their UV–Visible emission excitation spectra. paints had been previously fully characterized through a multi-analytical approach. In this work, spectra acquired manuscripts dating...

Monascus purpureus C322 was cultivated on well-established production media to yield prevailingly red or orange pigment-rich ethanolic extracts. Once these extracts had been diluted by an overall factor of 50, they were used as such to dye raw wool standard specimens differently premordanted using alum or stannic chloride. Independently of the mordant used, the specimens dyed with the red pigme...

Basic organic drugs were extracted into ethanol from urine saturated with potassium carbonate. Drugs in this concentrate were purified by extraction into ether at pH 8.5. The ether extract was evaporated and applied to several thin-layer chromatograms. Functional-group detection was used in qualitative and semiquantitative analysis of the developed chromatograms by spraying the plates sequentia...

HIGHLIGHTS Crab apples that could not be consumed were evaluated. Turkish delight is colored with crab apple anthocyanins instead of synthetic colorants. phenolics have added functional properties to Rose-flavored delight.

This paper proposes and describes a novel technique for organic shapes classification by similarity to basic geometric shapes. The amber data used in experiments are collected by amber art craft industry experts and the presented investigations were care out in order to develop a classifier for online amber sorting application. The centroid distance function was selected for shape representatio...