Discursos leidos ante la Real Academia de Nobles Artes de San Fernando en la recepción pública de Nicolas Gato de Lema

Contiene: Discurso de Nicolás Gato de Lema. Contestacion por el Marqués de Molin

A New Methodology for Vibration Error Compensation of Optical Encoders

Optical encoders are sensors based on grating interference patterns. Tolerances inherent to the manufacturing process can induce errors in the position accuracy as the measurement signals stand apart from the ideal conditions. In case the encoder is working under vibrations, the oscillating movement of the scanning head is registered by the encoder system as a displacement, introducing an error into the counter to be added up to graduation, system and installation errors. Behavior improvement can be based on different techniques trying to compensate the error from measurement signals processing. In this work a new “ad hoc” methodology is presented to compensate the error of the encoder when is working under the influence of vibration. The methodology is based on fitting techniques to the Lissajous figure of the deteriorated measurement signals and the use of a look up table, giving as a result a compensation procedure in which a higher accuracy of the sensor is obtained

Stepwise transversus abdominis muscle release for the treatment of complex bilateral subcostal incisional hernias.

Background Management of subcostal incisional hernias is particularly complicated due to their proximity to the costochondral limits in addition to the lack of aponeurosis on the lateral side of the abdomen. We present our results of posterior component separation through the same previous incision as a safe and reproducible technique for these complex cases. Methods We present a multicenter and prospective cohort of patients diagnosed with bilateral subcostal incisional hernias on either clinical examination or imaging based on computed tomography from 2014 to 2020. The aim of this investigation was to assess the outcomes of abdominal wall reconstruction for subcostal incisional hernias through a new approach. The outcomes reported were short- and long-term complications, including recurrence, pain, and bulging. Quality of life was assessed with the European Registry for Abdominal Wall Hernias Quality of Life score. Results A total of 46 patients were identified. All patients underwent posterior component separation. Surgical site occurrences occurred in 10 patients (22%), with only 7 patients (15%) requiring procedural intervention. During a mean follow-up of 18 (range, 6–62), 1 (2%) case of clinical recurrence was registered. In addition, there were 8 (17%) patients with asymptomatic but visible bulging. The European Registry for Abdominal Wall Hernias Quality of Life score showed a statistically significant decrease in the 3 domains (pain, restriction, and cosmetic) of the postoperative compared with the preoperative scores. Conclusion Posterior component separation technique for the repair of subcostal incisional hernias through the same incision is a safe procedure that avoids injury to the linea alba. It is associated with acceptable morbidity, low recurrence rate, and improvement in patients’ reported outcomes.pre-print371 K

La Real Academia de San Carlos de Valencia propone un premio extraordinario en la clase de pintura, y los trece acostumbrados. [Texto impreso]

certifica el secretario perpétuo D. Mariano Ferrer AuletHay un ejemplar encuadernado con: Pragmatica que su Magestad ha mandado promulgar revalidando los anteriores en qu ese prohibe el uso de armas blancas cortas y las de fuego ... (XVIII/4280)

La Real Academia de San Carlos de Valencia propone trece premios a los profesores de las Tres Nobles Artes. [Texto impreso]

Certifica el secretario perpétuo D. Mariano Ferrer AuletHay un ejemplar encuadernado con: Pragmatica que su Magestad ha mandado promulgar revalidando los anteriores en qu ese prohibe el uso de armas blancas cortas y las de fuego ... (XVIII/4280)