Essays about: "heterotrophic"

Showing result 16 - 20 of 29 essays containing the word heterotrophic.

1. 16. Biofloc technology : a new concept to produce feed to Swedish aquaculture

   University essay from SLU/Dept. of Animal Nutrition and Management

   Author : Lovisa Granberg; [2016]
   Keywords : microbial protein; tilapia; shrimp; feed; environment;

   Abstract : The aquaculture provides many people with fish and it will increase in scale. To provide the fish with feed that is not a load on the environment the use of microbes as feed either filtrated directly from the water or recovered to become protein meal is very promising. Biofloc technology (BFT) is one method with filtration directly from water. READ MORE

3. 17. Biodiversity of Organic-Walled Eukaryotic Microfossils from the Tonian Visingsö Group, Sweden

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Corentin Loron; [2016]
   Keywords : Organic-walled microfossils; Tonian; cyst; green algae; eukaryote; Visingsö Group; Mikrofossil med organiska cellväggar; tonian; cysta; grönalger; eukaryot; Visingsö gruppen;

   Abstract : The diversification of unicellular, auto- and heterotrophic protists and the appearance of multicellular microorganisms is recorded in numerous Tonian age successions worldwide, including the Visingsö Group in southern Sweden. The Tonian Period (1000-720 Ma) was a time of changes in the marine environments with increasing oxygenation and a high input of mineral nutrients from the weathering continental margins to shallow shelves, where marine life thrived. READ MORE

4. 18. Regulation of bacterial production in the Råne estuary, northern Baltic Sea

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

   Author : Evelina Broman; [2015]
   Keywords : Bacteria; Estuary; Nutrient limitation; bDOC; BGE;

   Abstract : Earlier studies indicate that the interaction between heterotrophic bacteria and dissolved organic matter is rather different in rivers and estuaries. The aim of my thesis was to elucidate if bacteria are regulated differently in the Råne river and estuary during a spring situation. READ MORE

5. 19. Evaluation of the suppressive effect of intermittent aeration on nitrite-oxidising bacteria in a mainstream nitritation-anammox process

   University essay from Uppsala universitet/Luft-, vatten- och landskapslära

   Author : Amanda Okhravi; [2015]
   Keywords : Activity tests; anammox; AOB; Manammox; nitritation; NOB; OUR.; Aktivitetstester; anammox; AOB; Manammox; nitritation; NOB; OUR.;

   Abstract : An alternative to conventional removal of nitrogen through autotrophic nitrification and heterotrophic denitrification is autotrophic nitritation-anammox. The anammox bacteria oxidise ammonium directly to nitrogen gas with nitrite as an electron acceptor. READ MORE

6. 20. Evaluation of Nitration/Anammox process by bacterial activity tests.

   University essay from KTH/Mark- och vattenteknik

   Author : Anna Mika; [2015]
   Keywords : Partial Nitritation Anammox process; Integrated fixed-film acti-vated sludge IFAS reactor; Batch tests; Specific Anammox Activity SAA ; Nitrate Uptake Rate NUR ; Oxygen Uptake Rate OUR ; Ammonium Oxi-dizing Bacteria AOB ; Nitrite Oxidizing Bacteria NOB ; Heterotrophic bac-teria;

   Abstract : Partial Nitritation/Anammox process (deammonification process), by which occurs oxidation of ammonium to nitrogen gas by autotrophic bacteria in anaerobic conditions, considered to be cost-effective and environmentally friendly method of nitrogen removal. Present research work focuses on achieving a high nitrogen removal degree, thanks to Anammox bacteria, while providing the best performance of the ongoing process. READ MORE