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Found 5 essays matching the above criteria.

  1. 1. The nutrient-color paradigm : A test based on a comperative analysis of lakes in four ecoregions in Sweden

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Viktoria Nordström; [2021]
    Keywords : ;

    Abstract : The nutrient-color paradigm explains lake productivity as a function of the concentrations of nutrients and colored dissolved organic matter (CDOM) in the water column.  Specifically, the paradigm predicts that primary production decreases with increasing concentrations of CDOM due to reduced light penetration, and increases with nitrogen or phosphorus concentration because these are typically the growth limiting elements for phytoplankton. READ MORE

  3. 2. Triaxial testing of lime/cement stabilized clay : A comparison with unconfined compression tests

    University essay from KTH/Jord- och bergmekanik

    Author : Diyar Amin; [2015]
    Keywords : elasticity modulus; undrained shear strength; compression triaxial test; extension triaxial test; unconfined compression test; elasticitetsmodul; odränerad skjuvhållfasthet; aktiva triaxialförsök; passiva triaxialförsök; enaxligt tryckförsök;

    Abstract : Detta examensarbete presenterar resultat från en laboratoriestudie på en lera från Enköping stabiliserad med kalk och cement. I laboratoriet har isotropiskt konsoliderade odränerade aktiva triaxialförsök utförts på provkroppar och jämförts med enaxliga tryckförsök som utförts på provkroppar från samma inblandningstillfälle. READ MORE

  4. 3. Soil Plugging of Open-Ended Piles During Impact Driving in Cohesion-less Soil

    University essay from KTH/Jord- och bergmekanik

    Author : Victor Karlowskis; [2014]
    Keywords : soil plugging; impact driving; driving resistance; driving records; jordpluggning; slagdrivning; drivmotstånd; pålprotokoll;

    Abstract : During impact driving of open-ended piles through cohesion-less soil the internal soil column may mobilize enough internal shaft resistance to prevent new soil from entering the pile. This phenomena, referred to as soil plugging, changes the driving characteristics of the open-ended pile to that of a closed-ended, full displacement pile. READ MORE

  5. 4. Comparative analyses of Defense gene expression in Norway spruce sapwood

    University essay from SLU/Dept. of Forest Mycology and Plant Pathology

    Author : Sophie Rommel; [2012]
    Keywords : Norway spruce; Sapwood; Gene expression;

    Abstract : As the most important species in Europe’s forest industry, Norway spruce [Picea abies (L.) Karst.] has a very high economical impact. Unfortunately, the forest industry has yearly losses of approximately 800 million euro, because many Norway spruce stands suffer infection by one of the tree’s major pathogens Heterobasidion parviporum (Fr. READ MORE

  6. 5. A study of the correlation between soil-rock sounding and column penetration test data

    University essay from KTH/Jord- och bergmekanik

    Author : Johan Fransson; [2011]
    Keywords : soil-rock sounding; column penetration; correlation;

    Abstract : Lime-cement columns have been used in Sweden to improve poor soil conditions since the 1970’s. The method is inexpensive and flexible, but is difficult to test since the columns are manufactured in-situ. Many test-methods have been developed for testing the column strength during the years. READ MORE