Field experiments were carried out in 1991 and 1992 on sandy soil highly infested with the potato cyst nematode Globodera pallida. Half the trial area was fumigated with nematicide to establish two levels of nematode density. Three levels of soil compaction were made by different combinations of artificial …

Using an optimized transformation protocol we have studied the possible interactions between transforming plasmid DNA and the Hansenula polymorpha genome. Plasmids consisting only of a pBR322 replicon, an antibiotic resistance marker for Escherichia coli and the Saccharomyces cerevisiae LEU2 gene were …

Factoren in de werksituatie bleken bepalend bij de benoeming van directeuren in het basisonderwijs. Voorkeursbeleid doorbrak deze factoren niet.

Een pedagogisch leerlingvolgsysteem invoeren m.b.v. de didactiek van teamgerichte nascholing

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Artikel over supervisie als middel tot bevordering van de beroepsbekwaamheid

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The wrist allows the hand to combine dorsopalmar flexion and radioulnar deviation, a unique combination of functions that is made possible by a highly complex system of joints. The morphologic features of the carpal bones and of the radiocarpal and intercarpal contacts can be functionally interpreted …

In dit artikel worden vier modellen van waarden- en normenvorming besproken. De auteurs opteren voor een ontwikkelingsmodel.