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Found 2 result(s)

The Cambridge Structural Database

CSD

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Established in 1965, the CSD is the world’s repository for small-molecule organic and metal-organic crystal structures. Containing the results of over one million x-ray and neutron diffraction analyses this unique database of accurate 3D structures has become an essential resource to scientists around the world. The CSD records bibliographic, chemical and crystallographic information for:organic molecules, metal-organic compounds whose 3D structures have been determined using X-ray diffraction, neutron diffraction. The CSD records results of: single crystal studies, powder diffraction studies which yield 3D atomic coordinate data for at least all non-H atoms. In some cases the CCDC is unable to obtain coordinates, and incomplete entries are archived to the CSD. The CSD includes crystal structure data arising from: publications in the open literature and Private Communications to the CSD (via direct data deposition). The CSD contains directly deposited data that are not available anywhere else, known as CSD Communications.

Regionaal Archief Alkmaar

Regional Archive Alkmaar

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Regionaal Archief Alkmaar (RAA) is a joint arrangement that operates within a large region in the province of Noord-Holland. The first purpose of this arrangement is to fulfill the function of a regional knowledge and information center through the acquisition and preservation of a broad collection of historical sources. The second purpose is to make these sources actively available. It does so according to the Dutch Public Records Act (Archiefwet 1995). At the time of writing, the joint arrangement services include 9 municipalities, namely: Alkmaar, Bergen, Castricum, Den Helder, Heiloo, Hollands Kroon, Schagen, Dijk en Waard and Texel. The arrangement also includes other joint arrangements. These are the GGD Hollands Noorden and Veiligheidsregio Noord-Holland Noord. Also, the RAA keeps the archives of the water authority Hoogheemraadschap Hollands Noorderkwartier and its predecessors. This is being done on the basis of a service agreement. Finally many archives of families, persons of interest, companies and non-governmental organizations are being collected and managed. This is a secondary task of the RAA, but these archives are also being managed on the ground of the Dutch Public Records Act.