Sökning: "pH"
Visar resultat 16 - 20 av 1549 uppsatser innehållade ordet pH.
16. Coupling between iron and humic substances in a land-sea transitional zone in the northern Baltic Sea
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : In marine ecosystems around the world, iron (Fe) is a well-studied and important trace element which has been found to stimulate phytoplankton and cyanobacteria growth, as well as limit nitrogen fixation and being essential for Legionella pneumophila which is known as the main cause of Legionnaires’ disease. Fe also contributes to the brownification of freshwater and has recently been documented to increase in concentration in rivers in Sweden. LÄS MER
17. Påverkan av tid och temperatur vid analys av pH i träckprov från häst
Uppsats för yrkesexamina på grundnivå, SLU/Dept. of Clinical SciencesSammanfattning : Mätning av pH i träck är vanligt förekommande i vetenskapliga artiklar om nutrition och magtarmhälsa på häst. Metoderna för mätning av fekalt pH som beskrivs i litteraturen varierar mellan olika studier vilket gör att det finns en efterfrågan av ett mer standardiserat protokoll för mätning av fekalt pH. LÄS MER
18. Sustainable use of calcium nitrate fertilizer under variable precipitation, soil properties and crop management
Master-uppsats, SLU/Dept. of Soil and EnvironmentSammanfattning : Application of nitrogen fertilizers in agriculture contributes substantially to global greenhouse gas emissions and nitrogen leaching. Accordingly, there is a need to increase knowledge about sustainable farming practices to reduce nitrogen losses to the environment without curtailing crop harvest. LÄS MER
19. Flame retardant treated wood : An investigation into phytic acid and its ability to act as a flame retardant agent
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och brandSammanfattning : Flame-retardant coatings have been serving their purpose since the romans ruled Europe. These products have been developed through the years, by mixing and synthetizing solutions, which have resulted in effective, although questionable, products due to their impact on the environment and our health. LÄS MER
20. Biogasproduktion vid samrötning av substrat tillgängliga vid lantbruk : Småskalig rötning vid Lillerudsgymnasiet
Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : The world is currently heavily dependent on fossil sources and the use of fossil fuels leads to increased global warming. One of the solutions to this environmental problems is biogas. LÄS MER