Remote sensing classification for volcanic ash cloud is a difficult task in the remote sensing application, and how to accurately obtain the volcanic ash cloud information from remote sensing image has become a key step in remote sensing classification of volcanic ash cloud.Aiming at Lacrosse Goggle the characteristics of the remote sensing images,
When heavy equipment are airdropped, the cabin cross-section is largely blocked, and rapid moving of heavy equipment will cause drastic changes in cabin pressure and even damage the health of cabin crew.Therefore, it is necessary to carry out numerical simulation of the pressure change in the airdrop cabin of the transport aircraft, and to lay a fo
BACKGROUND: Recorders It has been well evidenced that physical activity (PA) has a positive effect on human health.It is very likely that a physically active child will grow up to be a physically active adult.Growing older, there is evidence of decreasing PA in children and youth.In the period of adolescence, girls tend to be less physically active
Pozzolanic reaction of low-calcium metakaolin (MK) with calcium hydroxide (CH) at ambient temperature in the presence of water forms a series of hydrated phases such as tetracalcium aluminate hydrate (C4AH13), calcium silicate hydrate (C-S-H) and calcium aluminum silicate hydrate (stratlingite - C2ASH8).Stratlingite is the main crystalline phase an