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Over the past 10 years, Information Systems Curricular, have become significant tools in theapplication of measurement instruments management of science and technology at theinstitutional and regional levels. This research focuses on the development of a measuring instrument for the management of science and technology at the institutional level, the proposalis aided by empirical analysis of this activity at the University of Pinar del Rio (Cuba). IntegralManagement System Institutional Information and Knowledge (CV-UPR), developed byspecialists of this university is used as a tool. The research part of the identification of thetheoretical and conceptual references that support the proposal, by the method of documentaryanalysis. Furthermore it helps the empirical method of observation, and surveys and interviewsand empirical techniques. The instrument provides precise values obtained and further performscomparisons between a set of variables identified. Evaluative analysis performed by calculating asystem of indicators allowed to identify the capabilities of the institution for the generation,dissemination and evaluation of information and institutional knowledge in the management process of science and technology level institutional.

La mayor parte de los islotes que constituyen las islas Columbretes son de composición fonolítica y constituyen una sucesión de pequeños volcanes que se alinean según una dirección N170ºE. De norte a sur se suceden los volcanes fonolíticos de Ferrera, Piedra Joaquín, La Horadada y El Bergantín. Los restos de otros volcanes, hoy sumergidos, al norte y sur, completan esta alineación de más de 12 kilómetros de longitud, Most of the islets that constitute the Columbretes Islands are phonolitic in composition and constitute a succession of small volcanoes that line up in a N170ºE direction. From north to south, the phonolitic volcanoes of Ferrera, Piedra Joaquín, La Horadada and El Bergantín follow one another. The remains of other volcanoes, now submerged, to the north and south, complete this alignment of more than 12 kilometers in length

Se ha datado radiométricamente (K/Ar) el volcán de Bienvenida, uno de los volcanes de melilititas olivínicas más representativo de la región volcánica de Campos de Calatrava. Se ha analizado la roca y las principales fases minerales, lo que ha permitido obtener información sobre las condiciones de formación, Bienvenida volcano, one of the more representative olivine melilitite volcanoes of the volcanic region of Campos de Calatrava, has been radiometrically dated (K/Ar). The rock and main mineral phases have been analysed, which has allowed us to obtain information about the conditions of formation

En el sur de la isla de Tenerife, en el Edificio Roque del Conde, se encuentran estructuras en forma de domo denominadas “Roques", formadas por rocas intrusivas sálicas de composiciones ácidas e intermedias, fuertemente y moderadamente alcalinas: traquiandesitas, fonolitas y traquitas. Algunos de los roques son homogéneos composicionalmente, mientras que otros varían de composición de unas zonas a otras. Las traquiandesitas siguen pautas composicionales lineales con las rocas más básicas del edificio Roque del Conde y parecen haberse formado por un proceso de cristalización fraccionada relativamente sencillo y continuo. Las traquitas y las fonolitas siguen pautas composicionales diferentes a las anteriores. Están también esencialmente controladas por procesos de cristalización fraccionada, en los que las plagioclasas y los feldespatos potásicos, en diferentes proporciones según los casos, son las fases principales extraídas. Las fases accesorias, como la titanomagnetita, la esfena y el apatito, y el anfíbol han tenido también un papel importante en estos procesos, In Roque del Conde Old Edifice at the south of Tenerife Island there are domatic structures called “roques " that are formed by intrusive salic rocks of acidic and intermediate compositions, and alkaline and strongly alkaline: trachyandesites, phonolites and trachytes. Some of the roques are compositionally homogeneous whereas others have a compositional variation in different zones. Trachyandesites follow a lineal pattern with the most basic rocks of Roque del Conde edifice and have been formed by a process of fractional crystallization. Trachytes and phonolites follow different patterns from the former. They are essentially controlled by fractional crystallization processes, where plagioclase and K-feldspars are the main removed phases. Accessory phases like Ti-magnetite, sphene and apatite, or amphibole have also an important role in these processes

En el Edificio mioceno de Roque del Conde, en el sur de la isla de Tenerife, aparecen varias estructuras abovedadas que dan lugar a singulares morfologías de “roques". Se trata de traquiandesitas, traquitasy fonolitas constituidas por fenocristales de feldespatos y clinopiroxenos y, ocasionalmente también de anfíboles y feldespatoides, en una matriz de similar composición. Los feldespatos son esencialmente anortoclasas y sanidinas ricas en sodio, estando las plagioclasas restringidas a las rocas traquiandesíticas. Los clinopiroxenos son muy variados composicionalmente, observándose un enriquecimiento en el contenido en FeO de los mismos a medida que la roca es más evolucionada. En general, se trata de diópsidosyaugitas, siendo hedenbergitas en las rocas traquíticas. En algunos de los roques los piroxenos son egirínicos. Los anfíboles están frecuentemente transfomados a minerales anhidros y son bastante variados: magnesio-hastingsitas, pargasitas, ferropargasitas y kaersutitas. Los feldespatoides aparecen sólo en las fonolitas y son nefelinas y sodalitas Se han determinado las condiciones de formación de los minerales máficos, obteniéndose temperaturas de unos 1000°C para los anfíboles y 870°C para los piroxenos y presiones similares para ambos (unos 3kbar) lo que indicaría que estas rocas se habrían formado en los niveles inferiores de la corteza de la isla, At the south of Tenerife island on the Miocene Roque del Conde Old Edifice emerge various domed structures that form singular morphologies of " roques". They are trachyandesites, trachytes and phonolites composed by phenocrysts of feld sparsanddino pyroxenes, occasion ally with amphiboles and feldspathoids in a groundmass of similar composition. Feldspars are essentially sodium-rich sanidine and anorthoclase. Plagioclase is restricted to trachyandesitic rocks. Clinopyroxenes have a strong variation in their composition and can be observed an enrichment in the FeO content with the moste volved rocks. Generally, clinopyroxenes are diopside and augite, whereas hedenbergites appear in trachytic rocks. In some of the roques clinopyroxenes are egirinic. Amphiboles are frequently transformed to anhydrous minerals and have a broad compositional range: magnesiumhastingsites, pargasites, ferropargasites and kaersutites. Feldspathoids are restricted to phonolites and are nephelines and sodalites. It has been determ in ed th e form atio n c o n d itio n s o f m a fic m in erals: tem pe ra tu res a ro u n d 1000°C for amphiboles and 870°C for clinopyroxenes with similar pressure for both (around 3kbar), which indicate that these rocks could have been for medin low deep crust levels of the island

Se aborda el nivel de relevancia, desde la perspectiva de los usuarios, de la información obtenida para su uso final de la Biblioteca Agropecuaria (BAUNNE) de la Universidad Nacional del Nordeste de la República Argentina. El estudio se centra en el análisis de la relevancia de los documentos obtenidos y utilizados para distintos fines en función de distintas variables como su utilidad, originalidad, especificidad o precisión, claridad, autoridad y actualidad. Para determinar las relaciones entre las variables, se utilizó el Coeficiente de Correlación de Spearman. Los colectivos de usuarios que se estudian en el presente trabajo corresponden a los alumnos de grado, a los alumnos de posgrado de las maestrías, a los doctorandos de las distintas carreras y a los docentes e investigadores y usuarios externos a BAUNNE. Se muestra también la importancia que tiene cada uno de los criterios en la relevancia general dada por el usuario. Se cree necesario contar con una conexión remota adecuada la que permitirá un mejor y más fluído acceso virtual y optimizará el servicio en línea ofrecido por la biblioteca. Asimismo, resulta necesaria una más intensa instrucción del usuario en el uso de los recursos de la biblioteca. In the traditional evaluation of information-retrieval systems, the relevance of a document is determined on a graded scale. At present, relevance is judged from the user’s perspective. In this paper, the relevance is measured on documents that are used for any academic purpose by the users of the Agronomy and Veterinary Library of the Northeastern National University (Corrientes, Argentina). Users are specialized in both fields. We will focus on the relevance analysis of the documents obtained and used for different purposes according to their usefulness, originality, accuracy, clarity, authority, and updatedness. Spearman Coefficient Correlation has been used to determine the relationships between the variables. User types studied in the present paper are graduate and postgraduate students, researchers, academic teachers and external users. This study also shows the importance of each criterion to the general relevance of document from the user standpoint. It is believed that an adequate remote connection would permit a better, fluid access to online information resources and will reinforce the online information services by the library. It is also noted that users need a hardly instruction in the use of the available printed and online resources. Fil: Felquer Acosta, Lucrecia Viviana. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: López Huertas, María José. Universidad de Granada; España Fil: Giménez, Laura. Universidad Nacional del Nordeste; Argentina

Santa Luzia island is essentially formed by erosional remnants of, at least, one volcanic edifice: the Old Edifice. The remains of this edifice are now a NW-SE trending mountain range. It is a fisural edifice that follows this trend and is formed by hundreds of meters of aa-type lava flows crosscut by dikes. Lithologic compositions are basic and ultrabasic (picrobasalts, basanites, basalts and trachybasalts), intermediate (trachyandesites) and felsic (trachytes and phonolites). The main process generating these compositional differences is fractional crystallization, La isla de Santa Luzia está formada esencialmente por los restos erosivos de, al menos, un edificio volcánico: el Edificio Antiguo. Los restos de este edificio forman en la actualidad una alineación montañosa de dirección NWSE. Se trata de un edificio fisural alineado en la mencionada dirección formado por centenares de metros de coladas de lava de tipo aa y por diques que lo atraviesan. Las rocas que lo forman son básicas y ultrabásicas (basaltos picríticos, basanitas, basaltos y traquibasaltos), intermedias (traquiandesitas) y félsicas (traquitas y fonolitas). El principal proceso generador de estas diferencias composicionales es la cristalización fraccionada

This essay shows some new dating of the Basal Complex of La Gomera Island and among them, the first ones obtained using the 40Ar-39Ar methodology. Two of them are rocks of the Submarine Edifice. In the first one we obtain an age of 11,49 ± 0,66 Ma by the 40Ar-39Ar method, and in the second one 11,4 ± 1,6 Ma by the K-Ar method. These ages reveal that the volcanic activity of the NW outcroping Submarine Edifice is approximately 11,5 Ma in age, close to the beginning of the Lower Old Edifice activity. The third sample dated also by the 40Ar-39Ar method, is from the only syenitic rocks outcrop of La Gomera (Tamargada syenite); its age, 7,59 ± 0,81 Ma, confirms that these rocks represent the roots of one of the Old Edifice felsic episodes and that they do not belong to a felsic stage contemporary with the submarine growth of the island.

A more than 1000m thick pile of basaltic lava flows and pyroclasts dipping seawards rises on the western sector of San Vicente. Several systems of dikes cut across the succession that is composed of two different sequences. The lower sequence (Lazareto Formation), about 400 m thick, is formed mainly by pahoe-hoe, frequently ankaramitic, basalt lavas and some breccias intercalated. This sequence is exposed in small hills and low rounded ridges of gentle slopes. The upper sequence (Monte Cara Formation), some 700 m thick, consisting in individually thicker basaltic lava flows with typical scoria levels is well exposed in high scarps. Numerous subvertical dikes cross the entire succession. The dikes vary increasingly their strike from south to north. Frequent sills (one every 3-5 m) also intrude the lower sequence. The distribution of the lava flow dip strikes as well as the dike strikes suggests that the succession as a whole was part of a central volcanic edifice, of which the eruptive centre was once located south of the city of Mindelo. This giant volcanic edifice, 16-20 km in diameter and 1600-2000m high, would have extended off the present coast. According to the radiometric ages obtained the volcano built up between 6,1Ma and 4,6 Ma with maximum activity concentrated between 5,5 and 5 Ma

The first data about the composition of lava flows from Branco Island (Cabo Verde) are presented in this work. Most lava flows in the sequence are alkali basalts (Fo84-76 olivine, En44-36 diopside, An83-31 plagioclase) showing geochemical affinity of typical ocean island basalts. The scarce most evolved members are mugearites (olivine absent, En41-31 clinopyroxene, An51-26 plagioclase, and kaersutite). The compositional variations between both the types are explained by crystal fractionation and extraction of pyroxene (up to 29%) and lesser proportions of olivine and Fe and Ti oxides (Cpx: 75; Ol: 21; OxFeTi: 4). The transition to mugearites from the most evolved basalts would mainly be due to extraction of pyroxene (24%) and Fe and Ti oxides (Cpx: 68; Ol: 3; Plag: 5; OxFeTi: 30)

The Submarine Edifice rocks are the oldest rocks in La Gomera. This edifice is made up of submarine lava and breccias, with marine sediments associated, all of which is transverse by a very dense network of diques. This essay shows the first geochemical and mineralogical submarine volcanic rocks data. These rocks are intensely altered and have an alkaline chemical affinity. Compositions vary between alkaline basalts and trachyandesites, and all of them show typical Within Plate and Ocean Island basalts immobile elements contents. The latter Subaerial Edifice volcanic rocks are similar in composition, although they are slightly less alkaline and they have less evolved types

The morphological, structural and volcanological aspects of Branco, an island of the Cape Verde Archipelago, are described and interpreted in this work. The isle consists of a 700 m thick pile of basalt lava flows and scarce pyroclastics crossed by several families of dikes. The structure of the island could correspond to the remaining fragment of a primitive large shield volcano. The main hypothetical emission centre could once be situated between the present islands of Santa Luzia and Branco

El derecho a la información, que tiene implícito el derecho de acceso a la información, es un pilar fundamental del moderno Estado de Derecho. En el acceso a la información intervienen hoy procesos calificados de organización del conocimiento y de técnicas de recuperación de información, asociadas a las nuevas tecnologías. Las fuentes de información jurídica, en especial en lo que hace a las normas constitucionales y legislativas, deben ser de acceso libre, indiscriminado, gratuito y no restringido, garantizando los derechos fundamentales de los ciudadanos. Es responsabilidad de los Estados facilitar el acceso a esa información, a través de la publicidad de las normas. Internet es un vehículo adecuado para permitir la realización de los principios arriba mencionados del modo más amplio y democrático. En este trabajo se identifican y analizan los sitios oficiales de legislación de cada país integrante del Mercosur. Se caracterizan los sitios en función de parámetros que permitirán cuantificar y calificar el nivel de cumplimiento del principio de publicidad: normas disponibles, período abarcado, formas de acceso, costo, actualización, enlaces, modalidades de recuperación temática, etc. Se realiza un análisis comparativo, se muestran y comentan los resultados y se lleva a cabo una evaluación general. The right to information, implicit in the right to information access is one the main basis of the modern State of law. In the access to information, highly qualified processes of knowledge organization and retrieval techniques, associated to new technologies, operate. The sources for legislative information, in special those related to the constitutional and legislative rules, must have a free, no charges access; at the same time, it must be unrestricted and with no discrimination so the citizens fundamental rights are guarantied. The Sates are responsible for easing the access to information by publishing the rules. Internet is an adequate vehicle to put in practice the principles stated above in a more broad and democratic way. In this work, the official web sites on legislation belonging to the countries integrated in Mercosur are analyzed. The web sites are characterized using parameters that allow quantify and qualify the level of fulfilment of the publishing principle: kinds of rules, time period, forms of access, costs, links, updating, ways of information subject retrieval, etc.. A comparative analysis is carried out, the results are shown and discussed, and a general evaluation is done.

The new radiometric data from felsic domes on La Comerá allow to separate two different felsic both intrusive and extrusive episodes on the island. The early one, upper Miocene in age, includes the domes on the eastern sector of the island as well as the radial and the conical dikes cropping out on the north. Within this early episode of felsic magmatism, the domes on the eastern sector and the so called eastern radial dike-swarm seem to be contemporaneous and slightly older (8.6-7.9 Ma) than the western radial-dike swarm and the cone-sheet complex, a structure which also includes some related domes (7.5-6.4 Ma). A later felsic episode, lower Pliocene in age (4.5-3.9 Ma),includes all the rest of existent domes on La Gomera which are less alkaline and peralkaline than the older ones

The "Horizontal Basalts" in the Agulo area are made up of a more than 600m thick succession of basaltic flows that filled a SW-NE trending paleo-valley. Compositions vary between picrite and trachybasalt. The lithologic and geochemical variability of these rocks indicates that they were generated mainly by fractional crystallization. The recognition of several evolution cycles suggests the involvement of other processes that modify the general fractional crystallization trend

During fifty five years professor José María Fúster Casas (1 923-2000) works in (Central) Complutense University of Madrid in Igneous and Metamorphic Petrology. He collaborates actively in introducing new petrological techniques as optical microscopy and developping new geochemical laboratories. After his Ph D in Spanish Guinea he works mainly in two geological areas: the Hercynian Iberian Belt and the Cenozoic volcanism of Spain. From 1960 (when he became Professor) to 1990 (retiring) he developed a great number of projects summarized in many publications (articles, geological sheets, books) organizing international meetings (Canary 68, W Peninsular 81) and leading douzaines of Ph D projects, creating a vast school of geologists. Last years he concentrated his efforts in Canarian Volcanism

Several trachytic and phanalitic, radial and canical dyke-swarms crap out an the La Gomera narthern regian. The first age data abtained situate the intrusian episades coinciding in time with the extrusian af the Old Basalts. The earlier dykes shaw a radial pattern, centred in Tamargada. They have been dated in 8.0 Ma and 7.9 Ma. The canical swarm centred farther west, in Vallehermasa, has a slightly more recent age, between 7.5 Ma and 6.4 Ma. A third dyke-swarm is spatially assaciated with the canical structure and has likely a similar age.

During the evolution of the Las Cañadas volcanic edifice, debris avalanches were very significant destructive events. The Roques de Garcia unit was generated by such an event. 39Ar/40Ar dating has been carried out on different rock types related to this deposit. 1.70-1.40 Ma ages were measured on volcanic matérial involved in the avalanche deposit, 0.43 Ma on a phonolitic dyke cutting this formation. These results bracket the age of the debris avalanche emplacement which could mark either the transition between Cañadas ll-Cañadas III (1.4-1.1 Ma) or Cañadas Illa-Cañadas lllb (0.6-0.7 Ma) volcanic phases

During the evolution of the Las Cañadas volcanic edifice, debris avalanches were very significant destructive events. The Roques de Garcia unit was generated by such an event. 39Ar/40Ar dating has been carried out on different rock types related to this deposit. 1.70-1.40 Ma ages were measured on volcanic matérial involved in the avalanche deposit, 0.43 Ma on a phonolitic dyke cutting this formation. These results bracket the age of the debris avalanche emplacement which could mark either the transition between Cañadas ll-Cañadas III (1.4-1.1 Ma) or Cañadas Illa-Cañadas lllb (0.6-0.7 Ma) volcanic phases

A mainly phonolitic, 10 km in diameter, cone-sheet complex crops out on the northern area of La Comera. The swarm intrudes into the Basal Complex, The Old Basalts and other rocks of the Trachytic-phonolitic Complex to which they belong. The cone-sheet complex center lies south of Vallehermoso. Most of the dykes in the core of the structure are "conic dome-sheets" which start to be evidenced 400m far from the center and dip over 50°. In the surrounding area the dome-sheets are less frequent while simple cone-sheets are more abundant and dip more gently towards the periphery. From the analysis of their dips and distribution a single conic structure is deduced. The cone-sheets were originally connected to a hypothetical dome-shaped magmatic body whose uppermost part is at present located 1350m under sea level

The distributidn of felsic dykes on La Comera northern area corresponds to several swarms. The first radial dyke swarm is centered on the Tamargada area. The second radial dyke swarm center, located farther west, south of Vallehermoso is associated with a cone sheet complex

Olivine phenocrysts are always present in the Miocene basalts of Fuerteventura, whilst they are scarce in the trachybasaltic types. Notwithstanding, olivine is common as part of the groundmass in these trachybasalts. This mineral is completely absent in the trachyandesites. When every single rock is considered separately, the Fo-content of olivines is always higher in phenocrysts than in small crystals fo rm in g the groundmass. So, the o liv in e phenocrysts in basalts are Follh7l and Fo7, u those fou nd in the groundmass. In trachybasalts these values are respectively lower, Fo7,l 74 the scarce phenocrysts and Fom the more abundant crystals contained in the fine grained matrix.No difference related to rock alkalinity is appreciated. Differences in the olivine behaviour among all three the Volcanic Complexes that constitute the Old Basaltic Series are not either observed.The Mg-richer phenocrysts in the less differentiated basaltic types show compositional features which evidence equilibrium with the bearing rock. On the contrary, those in more differentiated basalts should be interpreted as inherited from Mg-richer magmas

The Southern Volcanic Complex II consists mainly of basalts with some trachybasalls and basaltic trachyandesltes. Its lower sequence is formed by middle alkaline rocks whilst in the upper one only m ild ly alk ali H y + O I -n o rm a tive rocks are found. The variations in com positio n are largely explained by similar crystal fractionation models for both the lower and the upper sequences. The variation among d iffe re nt basaltic types is due to d iffe re n t extractio n rates o f ab out 10-15%, o liv in e being th e domin ant phase, followed, in a lesser proportion, by dinopyroxene. The difference between the most differentiated basalts and trachybasalts or basaltic trachyandesiles could be explained by extraction of dominant clinopyroxene with plagioclase and Fe-Ti oxide

Pyroxene (dio psid e o r augite) is p re se n t in a ll rocks o f th e M io c e n e V o lc a n ic C om plexes on Fuerteventura. Pyroxene phenocrysts are specially abundant in basalts, in which they represent a third of all phenocrysts.The En/(En+Fs) ratio decreases from core to rim in the scarce zoned phenocrysts and is always lower in the small crystals forming the groundmass. The En-content is also closely related to the total-rock weight percent MgO. The variation in a rock sample is, sometimes, as large as the one observed as a whole. The total range is EnB569 in basalts, EnB163 in trachybasalts, En77M in basaltic trachyandesites, En74-6B in trachyandesites and En70 62 in trachytes.The m axim um En-content o f basalts remains constant regardless the rock MgO concentration. This is due to crystallisation of pyroxene after an important amount of olivine, when the residual liquid is strongly Mg-depleted.The Ca+Na - Ti concentrations are those typical of alkaline rocks, showing an evident increase in Wo-component with increasing rock alkalinity. The Wo-component decreases from phenocrysts to groundmass in mildly alkaline rocks, remains constant in middle alkaline rocks and increases in strongly alkaline and ultra-alkaline rocks