Peter Jäger

Regular calibration of existing measuring and testing devices is a binding requirement for most areas of the daily environment. This book guides you through the most important standard points of the many applicable standards and explains them with regard to their implementation in everyday life. It lists the most important reference points of the standards such as DIN EN ISO 9001, IATF 16949, ISO / IEC 17025 and other standards on the topic and explains them with practical relevance.

Edition 2020

Calibration compendium

Engel sind glücklich, wenn sie zu den Menschen fliegen dürfen. Als aber Joschi und Fiona nach einem Ausflug zum Flughafen nicht zurückkehren, herrscht große Aufregung im Himmelreich. Hat sie vielleicht ein großer »Silbervogel« beim Starten oder Landen erfasst? Der kleine Engel Piccolo spürt tief in seiner Seele, dass die Freunde nicht verunglückt sind. Kann er das Geheimnis der verschollenen Engel aufklären ...?

Das Geheimnis der verschollenen Engel

Terence Gledhill

Harry Smit

Ilse Bartsch

Kees Davids

Ralf Deichsel

Antonio Di Sabatino

Grzegorz Gabrys

Joanna Makol

Henk van der Hammen

Gerd Weigmann

Andreas Wohltmann

Eberhard Wurst

Chelicerata are a basically terrestrial group of invertebrates, including many clades whose representatives have never found an evolutionary way to aquatic live. An exception is made by the spiders, which include a considerable number of hygrophilous species, and by the highly diverse aquatic mites which in inland water habitats are represented by members of numerous different clades having evolved an aquatic or amphibious lifestyle. For the first time the present taxonomic knowledge about these different groups of invertebrates is brought together in an overview for the Central-European fauna. This volume includes taxonomic keys and ecological information concerning hygrophilous and aquatic spiders, a general introduction to mites, and the treatment of three mite groups generally known from terrestrial habitats. Also, the freshwater-dwelling representatives of the originally marine Halacaridae are treated, and the species-rich true freshwater mites (Hydrachnidia) are represented in a general overview.

Süßwasserfauna von Mitteleuropa, Vol. 7/2-1 Chelicerata: Araneae/Acari I

Peter Jäger

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