@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/eb1e346d-eeca-43ea-93dc-2cccc292edde> a dcat:Dataset ;
    dct:description "The effects of temperature and of divalent ion concentration on the structure of aqueous surfactant solutions have been determined. As temperature increases, the salinity range where liquid crystalline phases exist is narrowed. At sufficiently high temperatures the liquid crystal \"melts\" and only isotropic phases are observed. These are an aqueous phase and, when partial immiscibility of alcohol and brine occurs, an alcohol rich phase as well. The effect of divalent ions on aqueous solution structure is basically the same as that of monovalent ions, but smaller quantities of divalent ions are needed to bring about the same phase changes. In the particular system studied addition of one mole of Ca+ was equivalent to addition of about 11.5 moles of Na+. We have extended our model of drop size in microemulsions to include the effect of drop dispersion. A hard sphere model was used to describe dispersion effects. With dispersion, drop size is slightly smaller for both oil-continuous and water-continuous microemulsions than predicted by the previous analysis which considered film properties alone." ;
    dct:identifier "eb1e346d-eeca-43ea-93dc-2cccc292edde" ;
    dct:issued "2025-11-25T23:00:06.415048"^^xsd:dateTime ;
    dct:modified "2025-11-25T23:00:06.415052"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/b9d8e33f-c3b6-404c-b260-b928137f5a39> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "MULTIPOLYGON (((-79.3966 39.7193, -80.4291 39.7198, -80.5243 39.7212, -80.5260 40.1625, -80.5239 41.4951, -80.5226 41.8508, -80.5206 41.9869, -79.7632 42.2673, -75.3828 41.9984, -75.3457 41.9928, -75.1248 41.8492, -75.0798 41.8141, -74.7400 41.4221, -74.7053 41.3751, -74.7001 41.3506, -74.7255 40.1493, -74.7463 40.1244, -75.1429 39.8816, -75.2537 39.8455, -75.4205 39.7990, -75.7749 39.7246, -75.7911 39.7239, -76.1392 39.7222, -76.5698 39.7203, -77.4758 39.7196, -79.3966 39.7193)))"^^gsp:wktLiteral ] ;
    dct:title "LOW INTERFACIAL TENSION AND MISCIBILITY STUDIES FOR. SURFACTANT TERTIARY ENHANCED OIL" ;
    dcat:distribution <https://data.amerigeoss.org/dataset/eb1e346d-eeca-43ea-93dc-2cccc292edde/resource/d73bea38-f2d2-4e3b-8aa0-0cbe71643b5b> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ckan",
        "edx",
        "energy",
        "energy-data-exchange",
        "enhanced-oil-recovery",
        "fluids",
        "geo",
        "geochemistry",
        "geoss",
        "global",
        "miscibility",
        "surfactant" .

<https://data.amerigeoss.org/dataset/eb1e346d-eeca-43ea-93dc-2cccc292edde/resource/d73bea38-f2d2-4e3b-8aa0-0cbe71643b5b> a dcat:Distribution ;
    dct:description "The main purpose of this project is to develop an improved basic understanding of how ultralow interfacial tensions arise in oil-brine-surfactant systems. Such tensions must be achieved and maintained during tertiary oil recovery processes if they are to be successful." ;
    dct:format "PDF" ;
    dct:issued "2014-06-30T13:21:42.317192"^^xsd:dateTime ;
    dct:modified "2025-11-25T23:00:06.405498"^^xsd:dateTime ;
    dct:title "BC10007-14.pdf" ;
    dcat:accessURL <https://edx.netl.doe.gov/storage/f/2014-06-30T17%3A21%3A37.265Z/bc10007-14.pdf> ;
    dcat:byteSize "2433636"^^xsd:nonNegativeInteger .

<https://data.amerigeoss.org/organization/b9d8e33f-c3b6-404c-b260-b928137f5a39> a foaf:Agent ;
    foaf:name "Energy Data Exchange" .