During the last decades, maritime security has always stood as a separate critical problem for both shipowners and crews of sea-going ships, characterized by alternating periods of relative stability and periods of occurrence and growth of new threats, which proceeded from times of sailing fleet to an epoch of iron steam shipbuilding.Certainly, it
In the Chinese Han population, prolonged exposure to hypoxic conditions can promote compensatory erythropoiesis which improves hypoxemia.However, Tibetans have developed unique phenotypes, such as downregulation of the hypoxia-inducible factor pathway through EPAS1 gene mutation, thus the mechanism of adaption of the Han population should be furthe
The phylogenetic relationships of most Paleozoic tetrapod clades remain poorly resolved, which is variably attributed to a lack of study, the limitations of inference from phenotypic data, and constant revision of best practices.While refinement COOK BOOK of phylogenetic methods continues to be important, any phylogenetic analysis is inherently con
Crown root fractures in the maxillary anterior region represent an intriguing challenge for clinicians.An interdisciplinary approach based on exposing fractured margins and the definitive prosthetic rehabilitation represent the standard modality of treatment for these conditions to restore the appropriate biologic dimension and esthetics.However, i