PhD theses

All Wageningen University PhD theses

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    Wageningen PhD theses


    This database contains bibliographic descriptions of all Wageningen University PhD theses from 1920 onwards. It is updated on a daily basis by WUR Library.

    Author abstracts and/or summaries are added to all descriptions. A link to the full text dissertation is added to the bibliographic description. In a few cases, no electronic version is available, mostly because of copyright issues.

    Hard copies of all theses are available for loan at WUR Library. To request them, click the link Request this publication in the full record presentation. This is a fee based service.

    mail icon WUR Library, 9 july 2012

     

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    We will mail you new results for this query: (dissertatie/nummer=* AND publication year==1980)
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Organism-substrate relationships in lowland streams [PhD thesis]
Tolkamp, H.H. \ 1980
fauna - water bottoms - Mollusca - streams - aquatic ecosystems - articulata - gelderland - macrofauna

Abstract:
A field and laboratory study on the microdistribution of bottom dwelling macroinvertebrates to investigate the role of the stream substrate in the development and preservation of the macroinvertebrate communities in natural, undisturbed lowland streams is described.

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Disjunctive linear operators and partial multiplications in Riesz spaces [PhD thesis]
Putten, B. van \ 1980
functional analysis
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Studies on the role of serum proteins in the ovarian function of the tsetse fly, Glossina palpalis palpalis [PhD thesis]
Takken, W. \ 1980
agromyzidae - animal nutrition - anthomyiidae - calliphoridae - drosophilidae - glossina - glossinidae - muscidae - reproduction - tachinidae - tephritidae - schizophora
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A soil technological study on effectuating and maintaining adequate playing conditions of grass sports fields [PhD thesis]
Wijk, A.L.M. van \ 1980
outdoor recreation - soil water - soil physics - sports grounds - playability

Abstract:
Deze studie beoogt bij te dragen aan de kennis van die eigenschappen en processen in toplaag en ondergrond die de bespeelbaarheid van sportvelden op meer directe wijze bepalen. Er werd gekozen voor een bodemfysische, grondmechanische, hydrologische benadering van de bespeelbaarheid, waarbij de mechanische sterkte van de toplaag centraal stond Het onderzoek betrof voetbalvelden en bestond uit een inventariserend deel uitgevoerd in het veld, een analyserend deel berustend op laboratoriumwaarnemingen en een modelonderzoek dat behalve een analyserend ook een generaliserend karakter had

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Electrical events associated with primary photosynthetic reactions in chloroplast membranes [PhD thesis]
Schapendonk, A.H.C.M. \ 1980
bioenergetics - chloroplasts - electrical properties - membranes - photosynthesis - synthesis - photochemistry
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Resistance in Cucumis sativus L. to Tetranychus urticae Koch [PhD thesis]
Ponti, O.M.B. de \ 1980
bryobia - cucumbers - cucumis sativus - disease resistance - pest resistance - plant breeding - plant pests - plants - tetranychus urticae - trombidiidae
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An investigation into the extent to which various dietary components, particularly lactose, are related to the incidence of diarrhoea in milk-fed calves [PhD thesis]
Hof, G. \ 1980
feeds - carbohydrates - cattle - veterinary science - digestion - occupational disorders - toxic substances - toxicology
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Rationalisering van de dietetiek [PhD thesis]
Swieringa, J. \ 1980
cookery - diet - dietetic foods - dietetics - diets - fasting - food preparation - malnutrition - weight loss diets
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Habitat preferences, diet, feeding strategy and social organization of the black spider monkey (Ateles paniscus paniscus Linnaeus 1758) in Surinam [PhD thesis]
Roosmalen, M.G.M. van \ 1980
animal behaviour - Cebidae - ecology - habits - Suriname
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Phototropism in seedlings of sunflower, Helianthus annuus L. [PhD thesis]
Franssen, J.M. \ 1980
asteraceae - phototropism - plants
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Translocations and sex ratio distortion in the onion fly, Hylemya antiqua (Meigen), and their relevance to genetic control [PhD thesis]
Vosselman, L. \ 1980
agromyzidae - anthomyiidae - calliphoridae - chromosome translocation - drosophilidae - genetic control - genetics - glossinidae - insects - muscidae - sex - sex determination - sterile insect release - sterilization - tachinidae - tephritidae - translocation - schizophora
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Comparative aspects of taste receptors and host plant selection in larvae of various Yponomeuta species (Lepidoptera) [PhD thesis]
Drongelen, W. van \ 1980
yponomeuta - host preferences - taste - taste sensitivity - microlepidoptera
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On coexistence : a causal approach to diversity and stability in grassland vegetation [PhD thesis]
Braakhekke, W.G. \ 1980
grasslands - prairies - vegetation - synecology - agriculture

Abstract:
Dit verslag handelt over het functioneren van plantengemeenschappen in graslanden. Voor een goed beheer van vegetaties, voor welk doel dan ook, is inzicht nodig in de relaties tussen de aanwezige plantesoorten en de invloed van de omstandigheden daarbij. Deze relaties zijn bepalend voor de soortenrijkdom en de stabiliteit van de betreffende vegetaties. In stabiele en soortenrijke graslanden leven de individuen van verschillende soorten voortdurend in nauw contact met elkaar. Concurrentie lijkt daarbij nauwelijks te vermijden, aangezien verschillende plantesoorten grotendeels dezelfde voedingsstoffen nodig hebben en de groei van de vegetatie als geheel verondersteld wordt door voedsel beperkt te zijn. Experimenten met grassen hebben geleerd dat concurrentie doorgaans leidt tot wederzijdse verdringing en dus tot soortenarmoede. Klaarblijkelijk is in soortenrijke graslanden de concurrentie verzacht of op zodanige wijze gereguleerd dat de soorten elkaar niet wegconcurreren. De hoofdvraag in dit verslag is: Hoe zien de soorten in een soortenrijk grasland kans om wederzijdse uitsluiting te voorkomen? Een tweede vraag is: Waarom is dit niet mogelijk in soortenarme graslanden, zoals de zwaar bemeste cultuurgraslanden?

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Some physiological aspects of the insecticidal action of diflubenzuron, an inhibitor of chitin synthesis [PhD thesis]
Grosscurt, A.C. \ 1980
plant protection - insecticides - acaricides - molluscicides - pesticides - adverse effects - selectivity - toxicity - nontarget effects - nontarget organisms
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The immune system of cyprinid fish = Immunologie van de karper [PhD thesis]
Rijkers, G.T. \ 1980
antibodies - carp - cyprinidae - immunoglobulins - reticuloendothelial system
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Influence of fat crystals in the oil phase on stability of oil-in-water emulsions [PhD thesis]
Boekel, M.A.J.S. van \ 1980
density - emulsions - fats - fluid mechanics - fluids - liquids - mixing - oils - water
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Breeding for improved herbage and seed yield in Setaria sphacelata (Schumach.) Stapf and Hubbard ex Moss [PhD thesis]
Wijk, A.J.P. van \ 1980
plant breeding - productivity - yields - fodder grasses
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Investigations into the dynamics of aerosols in enclosures as used for air pollution studies [PhD thesis]
Vate, J.F. van de \ 1980
atmosphere - aerosols - composition - dust - air pollution - air quality - environment - damage - environmental impact
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Properties of hydrogenase from Megasphaera elsdenii [PhD thesis]
Dijk, C. van \ 1980
enzymes - enzymology - fermentation - isolation - peptostreptococcus - synthesis
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Structure and function of the digestive tract of the grasscarp [PhD thesis]
Stroband, H.W.J. \ 1980
carp - cyprinidae - digestion - digestive system
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