Abstract Control of crack propagation is crucial to make tougher heterogeneous materials.As a crack interacts with material heterogeneities, its front distorts and adopts complex tortuous configurations.While the Monogram Hat behavior of smooth cracks with straight fronts in homogeneous materials is well understood, the toughening by rough cracks w
Morphological Research on Indigenous Sambucus Species Pollen
The pollen grains have a definite shape, size, colour, structure for each species, genus and family and these characters are useful for systematical botany.The pollen has nutritive properties due to its content: proteins, lipids, carbohydrates, vitamins, hormones and minerals.In the Romanian flora vegetate three species of Sambucus, but only S.nigr
Accelerated evolution of dim-light vision-related arrestin in deep-diving amniotes
Arrestins are Course a pied - Femme - Vetements - Collant - 34 key molecules involved in the signaling of light-sensation initiated by visual pigments in retinal photoreceptor cells.Vertebrate photoreceptor cells have two types of arrestins, rod arrestin, which is encoded by SAG and is expressed in both rods and cones, and cone arrestin, encoded by
Toxicity and inhibition mechanism of gallic acid on physiology and fermentation performance of Escherichia coli
Abstract Gallic acid is a natural phenolic acid that has a stress inhibition effect on Escherichia coli.This study by integrates fermentation characteristics and transcriptional analyses to elucidate the physiological mechanism of E.coli 3110 response to gallic acid.Compared with the Scrubbers control (without stress), the cell growth was severely