How to Find Suitable Ontologies Using an Ontology-based WWW Broker

Knowledge reuse by means of outologies now faces three important problems: (1) there are no standardized identifying features that characterize ontologies from the user point of view; (2) there are no web sites using the same logical organization, presenting relevant information about ontologies; and (3) the search for appropriate ontologies is hard, time-consuming and usually fruitless. To solve the above problems, we present: (1) a living set of features that allow us to characterize ontologies from the user point of view and have the same logical organization; (2) a living domain ontology about ontologies (called ReferenceOntology) that gathers, describes and has links to existing ontologies; and (3) (ONTO)2Agent, the ontology-based www broker about ontologies that uses the Reference Ontology as a source of its knowledge and retrieves descriptions of ontologies that satisfy a given set of constraints. (ONTO)~Agent is available at http://delicias.dia.fi.upm.es/REFERENCE ONTOLOGY

Depth differential colonization by mycorrhizal fungi in prairie grasses

Non-Peer ReviewedA research was conducted in field plots to evaluate types of mycorrhizal fungi colonization in monocultures of green needlegrass (G), switch grass (S), western wheatgrass (W), Russian wild rye (R), crested wheatgrass (C) or mixtures of grasses. A root sampling strategy based on different soil depth (0-15, 15-30 and 30-45 cm) revealed a significant effect of depth on root colonization by different types of mycorrhizal fungi, but no significant differences were found between plant communities

Aportación al estudio micosociológico de la provincia de León

Se muestran los resultados de algunas excursiones y el catálogo de las especies de macromicetes recolectadas en cada localidad.We show the results of some excursions with the catalogue of species rellected in each place

Compactability and mechanical properties of cold recycled mixes prepared with different nominal maximum sizes of RAP

Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG[Abstract:] The use of cold recycled asphalt mixtures (CRM) has been soaring during recent years. Reclaimed Asphalt Pavement (RAP) is the main component of CRM, and despite the numerous studies on CRM, the impact of different RAP types has not been deeply studied. This study compares the volumetric and several mechanical properties of CRM prepared with RAP from two different sources and with various nominal maximum sizes (NMS). The mix design was fixed, and specimens were prepared using gyratory and impact compactors. Densities were measured before and after accelerated curing. Stiffness of CRM was investigated with Indirect Tensile Stiffness Modulus, tension–compression, and dynamic tests. Additionally, the cracking behavior was evaluated with Indirect Tensile Strength and Semi-Circular Bending tests. The particle size distribution was a key factor in the compactability of the CRMs studied. Together with temperature, the most influential factor on the studied mechanical properties was the air void content, while the differences in NMS showed no clear trends.Ministerio de Ciencia e Innovación; BIA2016-80317-RMinisterio de Ciencia e Innovación; BES-2017-07963

Simple approach to the mesoscopic open electron resonator: Quantum current oscillations

The open electron resonator, described by Duncan et.al, is a mesoscopic device that has attracted considerable attention due to its remarkable behaviour (conductance oscillations), which has been explained by detailed theories based on the behaviour of electrons at the top of the Fermi sea. In this work, we study the resonator using the simple quantum quantum electrical circuit approach, developed recently by Li and Chen. With this approach, and considering a very simple capacitor-like model of the system, we are able to theoretically reproduce the observed conductance oscillations. A very remarkable feature of the simple theory developed here is the fact that the predictions depend mostly on very general facts, namely, the discrete nature of electric charge and quantum mechanics; other detailed features of the systems described enter as parameters of the system, such as capacities and inductances

WebODE: A Scalable Workbench for Ontological Engineering

This paper presents WebODE as a workbench for ontological engineering that not only allows the collaborative edition of ontologies at the knowledge level, but also provides a scalable architecture for the development of other ontology development tools and ontology-based applications. First, we will describe the knowledge model of WebODE, which has been mainly extracted and improved from the reference model of METHONTOLOGY’s intermediate representations. Later, we will present its architecture, together with the main functionalities of the WebODE ontology editor, such as its import/export service, translation services, ontology browser, inference engine and axiom generator, and some services that have been integrated in the workbench: WebPicker, OntoMerge and the OntoCatalogue

Energía y productos de hidrólisis a partir de cultivos industriales y forestales

Se caracterizan química y energéticamente diversas especiesvegetales de elevada producción de biomasa (Eucalyptus globulus, tallos de girasol, Chamaecitysus proliferus, Paulownia fortunei, Leucaena diversifolia y Arundo donax) y se estudia el proceso de autohidrólisis en condiciones no isotermas en un marco general de evaluación de la valorización por fraccionamiento y aprovechamiento integral de las fracciones lignocelulósicas con posterior aprovechamiento energético de la fase sólida post-hidrólisis. Los procesos de autohidrólisis se han revelado particularmente interesantes en el caso de las especies madereras estudiadas frente a las especies herbáceas con variaciones en la extracción de la fracción de xilano a 180ºC entre el 19,7% de Eucalyptus globulus y el 36,8% de Leucaenadiversifolia y a 200ºC entre el 57,9% de Paulownia fortunei y el 79,1% de Chamaecytisus proliferus. Las especies madereras de corta rotación de cultivo ensayadas se manifiestan más susceptibles que la especie de referencia (Eucalyptus globulus) al proceso de autohidrólisis a bajas temperaturas. La explotación de las especies madereras de corta rotación ensayadas por combustión directa de la fracción sólida post-autohidrólisis a 200ºC aporta, además de la valorización inherente a los oligómeros y monosacáridos de la fracción líquida, un aumento del poder calorífico relativo de la fracción sólida post-autohidrólisis del 3,4% en Paulownia fortunei y 6,7% en Leucaena diversifolia

High and low plant biodiversity: two strategies encountered in southwest Saskatchewan prairie

Non-Peer Reviewe

Grass growth promotion by dark septate endophytic fungi is host specific

Non-Peer ReviewedIsolates of dark septate endophytic fungi (DSE) were obtained from healthy looking roots of two early season grasses [crested wheatgrass (Agropyron cristatum L), Russian wildrye (Elymus junceus Fisch)] and one late season grass [blue gramma (Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths] growing in southwest Saskatchewan. The capacity of some fungal isolates to colonize the roots or to promote the growth of these grasses was tested under controlled conditions. A first study revealed that DSE isolates AC 1 and EJ 5 colonize with more intensity the roots of the grass species from which they were isolated. A second study showed that the ability of each fungal isolate to promote plant growth depended on the plant species inoculated. Inoculation with four out of five isolates reduced B. gracilis growth, but increased the growth of one of the early season grasses. The results indicate that DSE fungal isolates are not species specific colonizers but have a strong preference for certain plant species, and some isolates can promote or depress plant growth depending on specific DSE isolate-grass combinations