Ecological data on road killed Amphisbaena alba linnaeus, 1758 (Squamata, Amphisbaenidae) in southeast Brazil

Vehicles running over vertebrates has been an increasing challenge to the local conservation of some herpetofauna. The Amphisbaenidae are fossorial reptiles which are poorly known ecologically. Biological and natural history data were obtained from three specimens of Amphisbaenia alba that were found dead along 8320 km survey of highways. The rarity of road kill and the importance of the species conservation are discussed.

Development of an instrumentation system embedded on FPGA for real time measurement of mechanical vibrations in rotating machinery

The real-time monitoring of events in an industrial plant is vital, to monitor the actual conditions of operation of the machinery responsible for the manufacturing process. A predictive maintenance program includes condition monitoring of the rotating machinery, to anticipate possible conditions of failure. To increase the operational reliability it is thus necessary an efficient tool to analyze and monitor the equipments, in real-time, and enabling the detection of e.g. incipient faults in bearings. To fulfill these requirements some innovations have become frequent, namely the inclusion of vibration sensors or stator current sensors. These innovations enable the development of new design methodologies that take into account the ease of future modifications, upgrades, and replacement of the monitored machine, as well as expansion of the monitoring system. This paper presents the development, implementation and testing of an instrument for vibration monitoring, as a possible solution to embed in industrial environment. The digital control system is based on an FPGA, and its configuration with an open hardware design tool is described. Special focus is given to the area of fault detection in rolling bearings. © 2012 IEEE.

Coordinación del transporte vial con los demas medios de transporte internacional en Sudamérica = Co-ordination of road transport with other international transport media in South America

Incluye Bibliografía

The Mexican road to change

Discurso pronunciado por el Secretario de Programación y Presupuesto de México el día 10 de mayo.

The ongoing history of a Chilean metal products and machinery firm

Includes bibliography

Concessions and road and rail transport optimization

Includes bibliography

Labour mobility in Argentina since the mid-1990s: the hard road back to formal employment

Includes bibliography

The agricultural machinery industry in Argentina: from restructuring to internationalization?

Includes bibliography

Sustancias y desechos peligrosos: impacto del movimiento transfronterizo hacia la región de América Latina y el Caribe y posibles acciones preventivas y de control. Parte I: la realidad del tráfico ilícito y los mecanismos institucionales para su prevención = Hazardous products and wastes: impact of transboundary movement towards the Latin American and Caribbean region and possibilities for preventing and controlling it. Part one: illegal traffic and institutional machinery for preventing it

Incluye Bibliografía