Parasite communities in Caranx sexfasciatus were characterized and analyzed to determine any interannual variations in structure and/or species composition. In total, 422 C. sexfasciatus were collected from Acapulco Bay, Mexico, between May 2016 and March 2019. Thirty-two taxa of metazoan parasites were identified: five Monogenea, thirteen Digenea, one Acanthocephala, one Cestoda, three Nematoda, seven Copepoda, and two Isopoda. Monogeneans were the most frequent and abundant parasite species in all sampling years. Parasite species richness at the component community level varied significantly from 8 (May 2016) to 25 (March 2019) and was similar to previous reports for other species of Carangidae. The component communities and infracommunities in C. sexfasciatus were characterized by low parasite species numbers, low diversity, and dominance of a single species (the monogenean Neomicrocotyle pacifica). Parasite community structure and species composition varied between sampling years and climatic seasons. Seasonal or local fluctuations in some biotic and abiotic environmental factors probably explain these variations.

This paper presents the preliminary results of analysis of an electrogastrogram (EGG) database, as well as the procedure of its generation. The visual analysis of the EGG, denoised processes, filtering, wavelet analysis, reconstruction signal and classical parameters obtained are reported. Analysis of the data using these parameters corresponds to previously reported results as well as when they were compared with clinical evaluation. This database could be used in generation of intelligent systems for monitoring gastric performance as an aid for diagnosis.

In this work is reported a brief summary of considerations for the design of a basic readout CMOS integrated system applied for the conditioning of small signals taken from a floating-gate based CMOS-MEMS capacitive structure intended for inertial measurement. Both the electromechanical structure and the readout circuit (consisting in a variable capacitor coupled to the gate of a MOSFET and a conventional CMOS amplification stage, respectively) were designed for and fabricated in the 0.5um standard CMOS MPW platform available in ON Semi. Simulation results for every component are presented as well as a comparison with measurements for the second stage of the readout system since the mobile capacitive structure (first stage) needs further post-processing to reach its proper functioning and desired behavior.

En este trabajo se presenta el desarrollo de un prototipo que permite identificar señalamientos específicos a través de técnicas de visión artificial. Utiliza una etapa de segmentación de imagen basada en el algoritmo de superpíxeles SLIC, seguida de una etapa de reconocimiento y clasificación de señalamientos basada en redes neuronales convolucionales que se ha implementado en un ordenador de placa reducida (SBC). El prototipo informa al usuario de la identificación de estos señalamientos a través de un mensaje de audio enviado a un auricular, cuenta con un módulo GPS que obtiene la ubicación donde se reconoció el señalamiento y se almacena para ofrecer al usuario notificaciones sobre señalamientos cercanos. Las pruebas fueron realizadas con señalamientos a escala 1:2 en entornos abiertos, con luz de día. El prototipo pretende ser un apoyo para que personas con discapacidad visual puedan desplazarse en entornos abiertos urbanos. Tiempos de procesamiento y desempeño del prototipo son reportados. Si bien la implementación en el ordenador de placa reducida seleccionado hace inviable su uso por los tiempos de operación, se demuestra la funcionalidad del sistema.