The global spread of COVID-19 has not been effectively controlled.It poses a significant threat to public health and global economic development.This paper uses a mathematical model with vaccination and isolation treatment to study the transmission dynamics of COVID-19.In this paper, some basic properties of the model are analyzed.The control repro
Peter Kotschy1, Sascha Virnik2, Doris Christ3, Alexander Gaggl21Private Practice, Vienna, Austria; 2Department of Oral and Maxillofacial Surgery, Central Hospital, Klagenfurt, Austria; 3Klagenfurt, AustriaObjective: The aim of periodontal therapy is the healing of periodontal inflammation; the protection of the attachment and the alveolar bone; and
The recruitment of international students has become a global phenomenon.Prospective candidates planning to study abroad rely on different sources of information Step Up Pulley Assembly in their decision-making processes, provided by different national, institutional and private actors.Thus, more analysis of the mediators facilitating this encounte