UNIFIED ANALYTICAL SOLUTIONS OF CIRCULAR TUNNEL EXCAVATED IN AN ELASTIC-BRITTLE-PLASTIC ROCK MASS CONSIDERING BLAST-INDUCED DAMAGE AND DEAD WEIGHT LOADING

Stress and deformation around circular tunnel are crucial for optimizing the support system and evaluating the tunnel stability.The damage zone induced by blasting or mechanical excavation can dramatically influence the support design and methods because the self-weight of broken rock mass at the roof of the tunnel can exert a high pressure on the

Abstract Epithelia are tightly connected cellular sheets, that shield our body from the external environment.They are continuously maintained by a pooled population of undifferentiated cells through differentiation.However, the maintenance mechanisms remain incompletely understood due to Edibles the difficulty of experimentally observing the differ

As the final executor of the braking system of coal mine hoists, the disc brake directly affects the safety and reliability of mine hoists.Aimed to the problem of failure of hoist wood dpn disc brake, according to its structural characteristics and functional requirements, this article proposes a disc brake that monitors positive brake pressure in

Ultrasound (US) image segmentation methods, focusing on techniques developed for fetal biometric parameters and nuchal translucency, are briefly reviewed.Ultrasound medical images can easily identify the fetus using segmentation techniques and calculate fetal parameters.It can timely find the fetal abnormality so that necessary action can be taken