The behaviour of a system composed of malonic acid (MA), KBrO3, H2SO4, and ferroin was investigated in batch experiments at various concentrations of oxygen above the chemical mixture when changing the concentration of MA. We could observe that at 10% of oxygen or more and for initial concentrations of malonic acid [MA]0 between 0.15 M and 0.6 M the system attains an equilibrium by some of mixe...

Iron molybdate catalysts were prepared using a sol gel route with malonic acid and oxalic their performance for the selective oxidation of methanol to formaldehyde was evaluated.

An uncommon autosomal recessive organic acid disease is malonic aciduria. This may be easily identified and included in the NBS programmes by means of widespread use tandem mass spectrometry’s study amino acid/acylcarnitine profile using dried blood spots (DBS) for newborn screening. In Tamil Nadu, we reported first screened diagnosed with aciduria screening (NBS) early neonatal period. The pat...

At least 10 clifferent metabolic pathwvavs leadling to the formation of malonlate have beenl rieported. The enzymes participatiing in these pathways include: AcetylCoA carboxylase (6, 10, 11, 20, 37), transcarboxylase (1, 10, 14, 15, 16, 24), thiokinase and thioesterase (11), barbiturase (12), malonic senmialdehyde dehydrogenase (22, 31, 32), B-alanine transaminase (18), AcylCoA-CO., exchange (...

The mitotic characteristics of excised roots of the garden pea, Pisum sativum, have been studied under conditions of controlled nutrition. The excised root system was tested with regard to its ability to respond, mitotically, to various carbon sources. Sucrose, glucose, fructose, and DL-glyceraldehyde were found to support mitotic activity in excised roots, galactose and 2-deoxy-D-glucose were ...

The interaction between Hopf and Turing modes has been the subject of active research in recent years. We present here experimental evidence of the existence of mixed Turing-Hopf modes in a two-dimensional system. Using the photosensitive chlorine dioxide-iodine-malonic acid reaction (CDIMA) and external constant background illumination as a control parameter, standing spots oscillating in ampl...

Breathing spiral waves are observed in the oscillatory chlorine dioxide-iodine-malonic acid reaction-diffusion system. The breathing develops within established patterns of multiple spiral waves after the concentration of polyvinyl alcohol in the feeding chamber of a continuously fed, unstirred reactor is increased. The breathing period is determined by the period of bulk oscillations in the fe...

We study time-periodic forcing of spatially extended patterns near a Turing-Hopf bifurcation point. A symmetry-based normal form analysis yields several predictions, including that (i) weak forcing near the intrinsic Hopf frequency enhances or suppresses the Turing amplitude by an amount that scales quadratically with the forcing strength, and (ii) the strongest effect is seen for forcing that ...