During railway operations, changes in the support conditions of summer beauty ornamental onion sleepers, owing to various internal and external factors, can damage rails and concrete sleepers and alter the structural characteristics of gravel-ballasted tracks.However, current methods for evaluating gravel ballast conditions primarily rely on visual
In this paper, we proposed a widely tunable distributed Bragg reflector (DBR) laser based on digital concatenated grating with multiple phase shifts (MPS-DCG).The MPS-DCG can provide a comblike reflectivity spectrum with flat envelop covering beefeaters triple flavor twists over 100-nm wavelength range.Static characteristics of the MPS-DCG DBR lase
In this paper, we consider a coupling non-linear system of two plate equations with logarithmic source terms.First, we study the local existence of solutions of the system using the Faedo-Galerkin method tc m350 and Banach fixed point theorem.Second, we prove the global existence of solutions of the system by using the potential wells.Finally, usin
Salmonella enterica and Escherichia coli are well-known bacteria commonly associated with foodborne illnesses in humans and animals.Genomic characterization of these pathogens provides valuable insights into their evolution, virulence factors and resistance determinants.This study aimed to characterized previously isolated Salmonella (n = 14) and s