منابع مشابه
dl-Alaninium iodide
The crystal structure of dl-alanine hydro-iodide (1-carb-oxy-ethanaminium iodide), C(3)H(8)NO(2) (+)·I(-), is that of an organic salt consisting of N-protonated cations and iodide anions. The compound features homochiral helices of N-H⋯O hydrogen-bonded cations in the [010] direction; neighbouring chains are related by crystallographic inversion centers and hence show opposite chirality. The io...
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There are many query languages (QLs) that can be used to query RDF and OWL ontologies but neither type is satisfactory for querying OWL-DL ontologies. RDF-based QLs (RDQL, SeRQL, SPARQL) are harder to give a semantics w.r.t. OWL-DL and are more powerful than what OWL-DL reasoners can provide. DL-based QLs (DIG ask queries, nRQL) have clear semantics but are not powerful enough in the general ca...
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In this paper, we describe ongoing research in three DL projects that build upon a common foundation – the 5S DL framework. In each project, we extend the 5S framework to provide specifications for a particular type of DL service and/or system – finally, moving towards a DL reference model. In the first project, we are working on formalizing content-based image retrieval services in a DL. In th...
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In the structure of DL-proline, C5H9NO2, the molecules are connected via classical intermolecular N-H...O hydrogen bonds involving the amine and carboxyl groups [N...O = 2.7129 (15) and 2.8392 (16) A], and form chains along the b-axis direction and parallel to (-101). The chains are linked into sheets via weak non-classical hydrogen bonds. The conformation of the molecule and its packing are no...
متن کاملIodide Mumps
To the Editor: We present 2 cases of bilateral swelling of the parotid glands appearing after application of contrast media. This unusual reaction is also known as Biodide mumps.[ As there is no premedication that can prevent its appearance, it is advisable in these cases to use imaging systems without iodide-based contrast media. The first case was a 70-year-old man with significant bilateral,...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812022003