Prevalence of egg-laying disorders and hematology and blood chemical parameters were analyzed in free-ranging common chameleons (Chamaeleo chamaeleon) from southern Spain. During four reproductive seasons oviposition failures occurred only during dry years. Egg binding appeared to be an important cause of mortality. Oviductal eggs of dystocic females were longer and wider than those of females with normal oviposition. Blood cell counts, white blood cell differentials, hematocrit, and concentration of hemoglobin, total plasma protein, glucose, uric acid, aspartate aminotransferase, and creatinine phosphokinase in blood were determined for eight apparently healthy post-reproductive females and considered as reference values. These chameleons differed from other reptiles in high concentrations of glucose in blood, averaging 362 mg/dl, and in high numbers of heterophils. Females with dystocia differed from reference values in an increase in monocytes and in the high concentrations of aspartate aminotransferase probably associated with tissue trauma.
A critical issue of Wireless Sensor Networks circuits is energy management. This work presents a Radio-Triggered Wake-Up solution designed and developed for WSN based systems. The proposed circuit manages, in a simple and efficient way, node switching between sleep mode and both receiving or transmitting active modes. It uses a HW hearing circuit, which lowers power consumption and avoids extra processing on the main microcontroller. The weak-up is selective with predefined recognition patterns without the microcontroller intervention. Furthermore, it is tiny in size, and the whole circuit is suitable for single CMOS chip integration. The circuit has been tested to demonstrate the WakeUp proposal worthiness. With only 8.7 microwatts of power consumption (@ 3.0 Vdc) the system successfully Wake-Up nodes up to 15 meters away from the transmission source. This performance improves solutions presented in previous research works.
Herpesvirus infection was diagnosed histologically and electron microscopically in white storks (Ciconia ciconia) and abdim storks (Ciconia abdimi). The consistent lesions of herpesvirus infection were haemorrhagic enteritis, with a slight mononuclear cellular infiltrate, dilatation of the crypts lined by a flat epithelium, necrotic foci in the spleen, and focal or scattered coagulative necrosis in the liver without cellular reaction. Intranuclear inclusion bodies were observed in epithelial cells, endothelial cells, lymphocytes, macrophages/monocytes, fibroblasts and smooth muscle cells in digestive tract, spleen, liver, ovary, oviduct and lung.Ultrastructurally, characteristic herpesvirus replication sites were observed in the nuclei of infected cells, with clusters of intracytoplasmic virions and associated structures, intranuclear tubular structures and filamentous aggregates.
RESUMEN:El desarrollo reciente de las técnicas de regeneración de playas en la protección de costas ha puesto de relieve la importancia de los estudios de seguimiento de playas. La estimación del clima marítimo y la batimetría de las playas constituyen elementos esenciales del seguimiento y las bases sobre las que se asentará la valoración o interpretación de los fenómenos observados en la misma. Dentro de este contexto, la cuantíficación de los errores de las batimetrías constituye un elemento fundamental para determinar la utilidad de las mismas y sus posibilidades de aplicación. En este artículo se analiza el problema de medición de profundidades dentro del seguimiento de la Playa de El Saler (Valencia), se presenta un medidor de profundidad de alta precisión y se comparan los errores de medida típicos de los sistemas de medición de profundidades habituales señalando los niveles de error que caben esperar según sea el procedimiento utilizado.
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