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  1. N Cycle: The Nitrogen Cycle in Grazed Grassland (1995 Multimedia)

    Subject
    Environmental science
    Distribution
    CD-ROM

    A CAL model of the nitrogen cycle that calculates the amounts of nitrogen in the major transformation of the nitrogen cycle in grazed grassland. It presents the results as a dynamic display, with which the...

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  2. Nitrogen Fixation: Nitrogenase and Chemical Modelling (1990 Video)

    Producer
    Michael Peet
    Subject
    Agriculture; Chemistry
    Distribution
    Sale, Videocassette. Standard formats. col. 24 min.

    Concentrates on a suggested model for the operations of the two proteins of the nitrogenese enzyme which bacteria use to fix nitrogen. First shows how root modules of legumes possess nitrogen fixing...

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  3. S343 Videocassette 2 (1990 Video)

    Subject
    Chemistry
    Distribution
    Sale, Videocassette. Standard formats. col. 176 min., 1999 sale: £145.00 (+VAT +p&p)

    The second of three working videos course S343. [See synopses of individual programmes for details of content.]

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  4. Nitrogen Fixation (1986 Video)

    Producer
    Neil Cameron
    Subject
    Agriculture; Biology
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Investigates some of the recent biochemical and genetic advances in the understanding of biological nitrogen fixation. Experiments at Rothamsted in the mid-19th century proved that nitrogen was essential for...

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  5. Chemistry of Biological Nitrogen Fixation, The (1984 Audio)

    Subject
    Biology
    Distribution
    Sale, Audiocassette., 1998 sale: £10.75 (inclusive)

    Discusses the biological nitrogen cycle; fixation processes; biological reduction of dinitrogen; metal content of nitrogenase proteins; dinitrogen complex of ruthenium and molybdenum; production of hydrazine...

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  6. Infection of Clover by Root-Nodule Bacteria (1973 Video)

    Director
    Chris C Doncaster
    Subject
    Agriculture; Biology
    Distribution
    Hire (film - HEFVL) Sale (video - BUFVC), Videocassette. VHS. col. 15 min., 1996 sale: £20.00 (+VAT +p&p)

    Describes the normal processes of infection of clover root hairs by root-nodule bacteria and subsequent nodule formation. Shows the root-hair surface using scanning electron microscopy, the initiation of...

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  7. Nitrogen Fixation by Legumes (1972 Video)

    Subject
    Agriculture; Biology
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 15 min., 1996 sale: £20.00 (+VAT +p&p)

    With the increasing demand for new and improved pastures and high protein food crops, research is seeking to develop better strains of nodulated legumes both for temperate and tropical agriculture. The...

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  8. Nitrogen Fixation in Lucerne (1970 Film, Video)

    Director
    Chris C Doncaster
    Producer
    Francis Bell
    Subject
    Agriculture; Biology
    Distribution
    Film (16mm)

    Describes an experiment in the International Biological Programme to estimate the amount of atmospheric nitrogen fixed by lucerne (alfalfa). Infection of root hairs by nodule bacteria and the development of...

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