Sökning: "soil improvement"

Visar resultat 6 - 10 av 49 avhandlingar innehållade orden soil improvement.

1. 6. Soil Modification by adding small amounts of binders : A laboratory study

   Författare :Wathiq Jasim Al-Jabban; Jan Laue; Sven Knutsson; Nadhir Al-Ansari; Paolo Simonini; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

   Sammanfattning : Soil stabilization through addition of a hydraulic binder is a method frequently used to modify and improve engineering properties of soft soils. Additives like cement and lime are typically used as stabilizers. More recently, industrial by-products, such as fly ashes, cement kiln dust, blast furnace slags and other slags have been used. LÄS MER

3. 7. Enhancing the process of environmental improvement in manufacturing industry

   Författare :Karin Höckerdal; Christer Johansson; Monica Bellgran; Glenn Johansson; Mälardalens högskola; []
   Nyckelord :Lean production; Environmental management; Manufacturing industry; Improvement process; Employee involvement involvement; and Explorative case study; Innovation and Design; innovation och design;

   Sammanfattning : To enable competitive industrial production, it is crucial to understand how to design and operate competitive production systems. Today, much operations management research focuses on the environmental dimension of sustainable manufacturing. LÄS MER

4. 8. The Nitrogen Cycle in Soil - Climate Impact and Methodological Challenges in Natural Ecosystems

   Författare :Anna-Karin Björsne; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nitrogen cycle; 15N tracing experiments; gross N transformation rates; climate change; climate treatments; mineralization; nitrification; forest fertilization; nitrous oxide emissions; boreal forest soil; tree species; soil organic matter; C:N ratio;

   Sammanfattning : Nitrogen (N) is a fundamental element for life, and limiting in many terrestrial ecosystems. In non-N-fertilized ecosystems, the N inputs can be low, and the nutrient availability for plants is determined by the internal cycling of N. LÄS MER

5. 9. Mixing Processes for Ground Improvement by Deep Mixing

   Författare :Stefan Larsson; KTH; []
   Nyckelord :Deep Mixing; Lime cement columns; Mixing mechanisms; Mixture quality; Field test; ANOVA; Variance reduction.;

   Sammanfattning : The thesis is dealing with mixing processes havingapplication to ground improvement by deep mixing. The mainobjectives of the thesis is to make a contribution to knowledgeof the basic mechanisms in mixing binding agents into soil andimprove the knowledge concerning factors that influence theuniformity of stabilised soil. LÄS MER

7. 10. The natural holocene vegetation development and the introduction of agriculture in northern Norrland, Sweden : studies of soil, peat and especially varved lake sediments

   Författare :Ulf Segerström; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Jordbruk-- Sverige -- Norrbotten; Växtekologi-- Sverige -- Norrbotten; Lule älvdal;

   Sammanfattning : The Holocene vegetation history of northern Norrland was studied by pollen analysis of sediement, peat and soil samples, with the aim to improve our knowledge about vegetation development in northern Norrland, and also about the history of man and the introduction of agriculture in the area. Earlier made pollen analyses from the four northernmost provinces were summarized and a series of new analyses from northern Norrland added. LÄS MER