Railway tracks must be managed appropriately because their conditions significantly affect railway safety.Safety is ensured through inspections by track maintenance staff and maintenance based on measurements using dedicated track geometry cars.However, maintaining regional railway tracks using conventional methods is becoming difficult because of
Abstract Background Housing environments shape injection drug-related risks and harms and thus represent a critical implementation setting for syringe services programs (SSPs).As critical harm reduction measures, SSPs provide safe injecting equipment to people who inject drugs (PWID).Vancouver, Canada, has well-established syringe distribution prog
ABSTRACT: Sperm storage tubules (SST) are specialized invaginations of the oviductal epithelium that permit avian species to store spermatozoa for extended periods of time, without compromising sperm fertilization capacity.The molecular and physiological mechanisms behind sperm storage tubule differentiation, sperm protection, and regression remain