Abstract With development of the heavy-haul railway, increased axle load and traction weight bring a significant challenge for service performance safety maintenance railway track. Conducting defect recognition on concrete sleepers ballast using big data is vital. This paper focused detection absent sleeper support in ballasted track with an emphasis integration model-based data-driven methods....

Summary The interactions of microbes with plant cells can radically change plant-cell form and function. A new study shows how a specialised formin protein paves the way for nitrogen-fixing bacteria to make homes in legumes.

Abstract The location of wagon gravity center for a loaded is underestimated in vehicle–track coupled system. asymmetric wheel load distribution due to loading offset significantly affects the wheel-rail contact state and seriously deteriorates curving performance conjunction with height cant deficiency. Optimizing cruising velocity, therefore, interest prevent derailment promote transport capa...