Evaluación de la posición labial según el análisis cefalométrico de Ricketts y Steiner en pacientes de un centro radiológico, Arequipa 2020

El objetivo fue determinar la posición labial según el análisis cefalométrico de Ricketts y Steiner en pacientes de un centro radiológico, Arequipa 2020. Estudio descriptivo, transversal, se analizaron 150 radiografías laterales. Para la posición de los labios se utilizó la línea E de Ricketts y la línea S de Steiner. La posición del labio con respecto a la línea E, fue para el superior (Ls) -1.76 mm, para el inferior (Li) -0.07 mm, respecto a la línea S Ls 1.46 mm, Li 2.34 mm; según Ricketts, para la Clase I en el sexo masculino Ls -2.94 mm, Li -0.82 mm, para el sexo femenino Ls -2.10 mm, Li -0.55 mm; en la Clase II el sexo masculino Ls -1.38 mm, Li 0.42 mm, el sexo femenino Ls -0.80 mm, Li 0.54 mm; según el análisis de Steiner, para la Clase I en el sexo masculino Ls 0.52 mm, Li 1.77 mm, el sexo femenino Ls -0.02 mm, Li 1.29 mm; para la Clase II en el sexo masculino Ls 2.01 mm, Li 2.49 mm, el sexo femenino Ls 2.88 mm, Li 3.45 mm. En conclusión, la posición de los labios fue protrusivo según el análisis de Ricketts y Steiner

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least 4 m. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the 6.5 m James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 yr, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit