Este artículo presenta la automatización de una secadora de café para laboratorio controlada por medio de dos microcontroladores y equipada con motores DC, sensores de temperatura, humedad relativa, celdas de carga, sensores ópticos, pantalla de cristal líquido, teclado, alarma y comunicación serial con el computador. Se integró el proceso de secado y los sistemas mec ánicos requeridos con los componentes electrónicos. El resultado fue una secadora de café con un proceso de secado automatizado junto a dos aplicaciones en Labview que permiten desplegar, registrar y graficar la información captada durante su funcionamiento.
The growth of the maxilla manifests itself differently from the mandible, which is characterized by a later sagittal development. The objective of the research was to associate the sagittal growth of the upper and lower jaw and the cervical maturation index in lateral cephalic radiographs of patients between 8 and 20 years of age from the city of Cuenca. A descriptive, correlational and retrospective cross-sectional quantitative approach was conducted with a database of 10,586 lateral cephalic radiographs. It was observed that the peak of growth begins around 9 years of age in women and at 11 years in men, and culminates at age 13 in females, and between 14 and 17 years in males. In
addition, a low correlation was determined between the sagittal growth of the upper jaw and the stages of vertebral maturation (r = 0.338) as well as with the lower jaw (r = 0.357). Finally, it was concluded that the growth of the upper jaw occurs in the first stages of cervical maturation, while in the lower jaw, longitudinal growth occurs from stage III of cervical maturation.
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