A égloga Toledo que Manuel de Faria e Soasa fez com versos de Garcilaso.

Sin resume

The PLC: a logical development

Programmable Logic Controllers (PLCs) have been used to control industrial processes and equipment for over 40 years, having their first commercially recognised application in 1969. Since then there have been enormous changes in the design and application of PLCs, yet developments were evolutionary rather than radical. The flexibility of the PLC does not confine it to industrial use and it has been used for disparate non-industrial control applications . This article reviews the history, development and industrial applications of the PLC

Threshold photoelectron photoion coincidence spectroscopy of trichloroethene and tetrachloroethene

The threshold photoelectron, the threshold photoelectron photoion coincidence and ion breakdown spectra of trichloroethene and tetrachloroethene have been recorded from 9 – 22 eV. Comparisons with the equivalent data for the three dichloroethene molecules and theoretical calculations highlight the nature of the orbitals involved during photoionisation in this energy range. The ground electronic state of C$_2$HCl$_3^+$ (C$_2$Cl$_4^+$) is bound, with excited valence states dissociating to C$_2$HCl$_2^+$ (C$_2$Cl$_3^+$) and C$_2$HCl$^+$ (C$_2$Cl$_2^+$). Appearance energies suggest that C$_2$HCl$^+$ forms from C$_2$HCl$_3^+$ by loss of two chlorine atoms, whereas C$_2$Cl$_2^+$ forms from C$_2$Cl$_4^+$ by loss of a Cl$_2$ molecule. The translational kinetic energy release into C$_2$HCl$_2^+$ (C$_2$Cl$_3^+$) + Cl is determined as a function of energy. In both cases, the fraction of the available energy released into translational energy of the two products decreases as the photon energy increases

Reading Paths in Spanish and Portuguese Baroque Labyrinths

The problems of reading and classifying labyrinth poems of the Iberian baroque are addressed. A quantity of significant illustrations is provided and commented on, setting forth guide-keys for reading and interpretation

The Reinvention of Reading

The concrete poetry movement started simultaneously in Europe and in Brazil. Although they agreed on fundamentals, the Brazilians/Portuguese—with a background in traditional poetry—were concerned with spatialization of the text and its relation to music, while the Europeans—with a background in graphics and architecture—were more influenced by the plastic arts. For both the concrete poem becomes a relational field of functions yielding tensions of word-things in space-time, and extending the boundaries of reading beyond the traditional literary limits. The author illustrates and discusses her own "image-texts"—studies in the illegibility or ambiguity of writing and the disintegration of language

High Friction Surfacing Systems Using Blends of Natural Aggregate and Calcined Bauxite

High friction surfacing (HFS), bonded to a road surface at high risk locations, has beenshown to significantly reduce road fatalities and serious injuries, i.e., HFS saves lives. Calcinedbauxite is the preferred aggregate for use in HFS systems due to its unique ability to resistpolishing and abrasion by vehicle tires. Calcined bauxite is expensive, negatively impacts theenvironment due to mining, production and transporting processes and has come under supplypressures in recent years. This paper investigates the potential for blending natural aggregates withcalcined bauxite for use in HFS systems. The experiments involved subjecting HFS specimens tolaboratory simulated trafficking and testing for skid resistance, texture depth and mass loss. Thetesting was carried out in laboratories in Spain and Northern Ireland. The findings suggest thatthere is the potential to reduce the amount of calcined bauxite used in HFS systems by replacing apercentage of the calcined bauxite with high PSV natural sandstone or volcanic tuff aggregate. Theimpact of this research could reduce the risks associated with supply issues to the HFS industry,reduce environmental impact by using less calcined bauxite in HFS systems and reduce costsassociated with the aggregate component of HFS systems—enabling road authorities to installmore systems at high risk locations to further reduce fatalities and serious injuries on their road

Agwest revegetation monitoring activity: evaluation 1999

During May 1999, an evaluation on the Agriculture Western Australia (AGWEST) Revegetation Monitoring Activity was undertaken. The evaluation was designed to track how the Land Conservation District Committees (LCDCs) in the Peel Harvey Catchment utilised the AGWEST Revegetation Monitoring Activity, and to determine if AGWEST\u27s objectives of the project were being met It also gave the community a chance to provide feedback on their experiences with the Monitoring Activity, and suggest future changes The survey concluded that the AGWEST Revegetation Monitoring Activity was used by LCDCs as a valuable tool for recording, monitoring and planning landcare projects. However, the process for obtaining information from the LCDC/Landcare groups and the support provided by AGWEST needs refinement. This report will look at the results of the survey and put forward recommendations which aim at improving the AGWEST Revegetation Monitoring Activity in the future