RESUMEN
The application of the reverse engineering and rapid prototyping technologies in the design of respiratory masks is introduced in this paper. Practice indicates that the technologies can reduce the cost and save the time in product developments.
Asunto(s)
Diseño Asistido por Computadora , Máscaras , Terapia Respiratoria/instrumentación , Algoritmos , Biología Computacional/métodos , Simulación por Computador , Diseño de Equipo , Humanos , Imagenología Tridimensional/instrumentación , Imagenología Tridimensional/métodos , Rayos Láser , Terapia Respiratoria/métodos , Diseño de SoftwareRESUMEN
Programmed cell death (PCD) systems have been extensively studied for their significant role in a variety of biological processes in eukaryotic organisms. Recently, more and more researches have revealed the existence of similar systems employed by bacteria in response to various environmental stresses. This paper summarized the recent researching advancements in toxin/antitoxin systems located on plasmids or chromosomes and their regulatory roles in bacterial PCD. The most studied yet disputed mazEF system was discussed in depth, and possible roles and status of such a special bacterial death and TA systems were also reviewed from the ecological and evolutionary perspectives.