The article presents the results of studies of profile joints of mechanisms and machines for rigidity and strength.The device is based on the use of fixed and movable profile connections designed to transmit torque.Profile joints with a guaranteed gap are considered, made on the basis of an equiaxial contour of the P3, P5 type and a curved contour
ABSTRACT Heteranthery, the presence of different types of stamens in a flower, may reduce the conflict between pollinators and plants by ensuring the resource for the pollinator without drastically affecting the availability of viable male gametes for fertilization, according to the division-of-labor hypothesis.We investigated whether the poricidal
Education system S.D.Sheremetev was formed according to the established pattern adopted in noble families in the 40s and 50s.XIX century.It included education in basic disciplines, primarily in the humanities, as well as military training.Exceptional attention was paid to Hutch studying foreign languages with their native speakers, this made it pos
Professional kitchens breastplate are both producers and consumers of food and many operate through unsustainable practices which have significant social and ecological impacts.Socially, they are spaces of low paid, high-pressured work, where gendered occupational discrimination is common.Ecologically, food production in these spaces contributes si
Engagement of the B cell receptor (BCR) with surface-tethered antigens leads to the formation of an immune synapse (IS), where cell signaling and antigen uptake are tightly coordinated.Centrosome re-orientation to the immune synapse has emerged as a critical regulatory step to guide the local recruitment and secretion of lysosomes, which can facili