The bleeding of cementitious materials corresponds to the settlement of the granular skeleton accompanied by the accumulation of water at the surface (bleed water).Part of this water (internal bleeding) remains trapped under the aggregates (sand or gravel) or the reinforcements.The excess of this trapped water can weaken the bond between the cement
IntroductionPhytohormones play a crucial role in regulating the abscission of plant organs and tissues.MethodsIn this study, the ultrastructure of the sepals of Korla fragrant pears was observed using a transmission electron microscope, and high-performance liquid and gas chromatography were used to analyze the dynamic changes of phytohormones in t
The article deals with the peculiarities of the current global economic crisis and discusses whether the crisis can give an impetus to a new development model.The author emphasizes that as the crisis is caused by external shock (the pandemic), it is very different from other types of economic crises and can be followed by serious civilizational mak