@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00675143v1> a dcat:Dataset ;
    dct:description """
              For the production of the reflective surface of a solar parabolic trough concentrator in the form of a parabolic cylinder, a cost effective method is to use the elastic buckling of a flat sheet. However, the surface resulting in such a buckling is only a coarse approximation of the parabola, that is not precise enough for the need of a high quality concentrator. We propose a method to correct this defect of approximation by applying additional external forces on the buckled sheet. These external forces include an edge torsion force and a pressing force on the sheet. Optimal positions and parameters of these additional forces are computed for various cases, that give a result in theoretical maximal concentration ratio up to 171, so this method offers a very attractive approach for low cost and high efficiency solar energy solutions.
            """ ;
    dct:identifier "hal-00675143" ;
    dct:issued "2026-05-26T09:41:55.808160"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-26T09:41:55.808165"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Elastic approximation for a solar parabolic trough" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00675143v1/resource/5e4f322d-6b97-406c-8051-259e71974fa3> ;
    dcat:keyword "elastic-deflection",
        "infoeu-reposemanticspreprint",
        "parabolic-trough",
        "preprints-working-papers-",
        "solar-concentrator",
        "spiotherengineering-sciences-physicsother" ;
    dcat:landingPage <https://hal.science/hal-00675143> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00675143v1/resource/5e4f322d-6b97-406c-8051-259e71974fa3> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-26T09:41:55.816172"^^xsd:dateTime ;
    dct:modified "2026-05-26T09:41:55.793748"^^xsd:dateTime ;
    dct:title "Elastic approximation for a solar parabolic trough" ;
    dcat:accessURL <https://hal.science/hal-00675143> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://hal.science/hal-00675143> a foaf:Document .