Reformation of railway transport, one of the goals of which is to optimize transportation costs, should be based not only on improving the management system, but also on the combination of technical, technological and marketing innovations.Russian railways will benefit from the experience of reforming US Class I railroads - the largest railway syst
Gastroliths, where preserved, can provide indirect evidence regarding diet in extinct avian and non-avian dinosaurs.Masses of gastroliths consistent with the presence of a gastric mill are preserved in many Early Cretaceous Jehol birds mostly belonging to the Ornithuromorpha.Gastroliths are also present in basal birds Sapeornis and Jeholornis in wh
The formation mechanism and utilization of barrier dam are the research hotspots in the field of disaster prevention and reduction.Due to the special formation process, complex internal structure, uneven composition materials and different accumulation patterns, there is still a lack of wella color touch 77 45 effective stability evaluation methods
Forceps are essential tools for digital nerve manipulation during digital nerve repair surgery.However, surgeons have to operate forceps with extreme caution to prevent detrimental post-operative complications caused by over-gripping force.Their intrinsically safe characteristics have led to the increasing adoption of soft robotics in various biome