Sökning: "kalium"
Visar resultat 21 - 25 av 31 avhandlingar innehållade ordet kalium.
21. Closing nutrient cycles
Sammanfattning : Adequate and balanced crop nutrition – with nitrogen (N), phosphorus (P), and potassium (K) – is vital for sustainable crop production. Inadequate and imbalanced crop nutrition contributes to the crop yield gaps – a difference in actual and potential crop yield. LÄS MER
22. Dynamics of forest soil chemistry
Sammanfattning : Acidification caused by emissions of Nitrogen and Sulphur and associated adverse effects on forest ecosystems has been an issue on the political agenda for decades. Temporal aspects of soil acidification and/or recovery can be investigated using the soil chemistry model SAFE, a dynamic version of the steady-state model PROFILE used in critical loads assessment on the national level, e. LÄS MER
23. Ischemic Cell Death in the CNS - applications of a new in vitro model
Sammanfattning : Ischemic brain damage is a common cause of death and disability. A global ischemic insult is usually the result of a transient cardiac arrest while occlusion of cerebral blood vessels leads to focal ischemic lesions, commonly termed stroke. LÄS MER
24. The mechanism of HAMLET-induced cell death - cellular signalling, oncogenes and clinical perspectives
Sammanfattning : Despite recent advances in cancer treatment, truly innovative approaches are required to move beyond the modest benefits achieved to date. HAMLET is a human protein-lipid complex originally discovered in breast milk able to kill a wide range of tumour cells while leaving healthy, differentiated cells unaffected. LÄS MER
25. Modelling effects of climate change and forestry on weathering rates and base cation cycling in forest soils
Sammanfattning : Base cations are important in forest soils as nutrients for vegetation and protection against soil acidification. Today, base cations have been lost from soils through acidification and forest harvesting. With low levels in soils, temporary situations of deficiency could occur. LÄS MER