Essays about: "nitrogen mass balance"

Showing result 1 - 5 of 13 essays containing the words nitrogen mass balance.

  1. 1. Nitrogen legacies in agricultural catchments : an analysis of 170 years of nitrogen legacies data in four Swedish agricultural catchments

    University essay from SLU/Dept. of Soil and Environment

    Author : Laura-Ainhoa Prischl; [2023]
    Keywords : nitrogen mass balance; nitrogen surplus; land use trajectories; hysteresis effect; water quality; agriculture; nitrogen surplus; land use trajectories; hysteresis effect; water quality; agriculture;

    Abstract : Despite the enforcement of legislation and application of measures, nitrogen (N) levels continue to be high in streams. One of the reasons for the low N reduction, is the legacy accumulation of N. READ MORE

  3. 2. Characterization and optimization of Rhodosporidium toruloides for production of lipids

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Niharika Singh; [2021]
    Keywords : chemical engineering; oily yeasts; lipids; nitrogen limitation; Technology and Engineering;

    Abstract : Oleaginous microorganisms provide an opportunity to produce oils without the use of arable land for cultivation of oil-containing plants. Oleaginous microorganisms are also capable of storing products of pharmaceutical interest alongside storing polymers, which could open new opportunities in the bioplastic industry. READ MORE

  4. 3. Effect of nutrient limitation in chemostat cultures on amino acid excretion in Clostridium thermocellum

    University essay from KTH/Industriell bioteknologi

    Author : Chonticha Phongsawat; [2019]
    Keywords : Biotechnology; ethanol; Clostridium; chemostat; nitrogen;

    Abstract : Introduction: Clostridium thermocellum is considered a model organism forconsolidated bioprocessing, due to its ability to hydrolyze lignocellulosicbiomass more efficiently than many other organisms and to produce ethanol.In order to meet the industrial requirements of ethanol yield and titer, metabolicengineering efforts have been made resulting in a strain that successfullydisplays increased ethanol yield with reduced amount of some byproducts. READ MORE

  5. 4. The environmental performance of Swedish food production : an analysis of agri-environmental indicators

    University essay from SLU/Dept. of Soil and Environment

    Author : Danira Behaderovic; [2018]
    Keywords : nutrient leaching; nitrogen; phosphorus; greenhouse gases; ammonia; pesticides;

    Abstract : In the European Union 43.5% of the land area is used for agricultural purposes, providing food, feed and fiber for the population, but also causing detrimental environmental impact. READ MORE

  6. 5. Nutrient limitation for coastal areas and estuaries in the Baltic Sea : Applying linear regression analysis and TN/TP ratio to determine the limiting nutrient

    University essay from Uppsala universitet/Institutionen för ekologi och genetik

    Author : Magnus Persson; [2017]
    Keywords : Eutrophication; limiting nutrient; TP; TN; the Baltic Sea; coastal areas; mass-balance calculations; TN TP ratio; Redfield ratio; linear regression analysis; Eutrofiering; begränsande näringsämne; TP; TN; Östersjön; kustområden; linjär regressionsanalys; TN TP kvot; Redfield kvot; massbalansberäkningar;

    Abstract : The purpose of this study was to determine the limiting nutrient in a set of coastal areas and estuaries in the Baltic Sea. Although the subject as been studied for several decades, no clear consensus has been reached in the scientific community as to whether primary production is limited by phosphorus or nitrogen. READ MORE