Essays about: "analysis of urea"

Showing result 1 - 5 of 30 essays containing the words analysis of urea.

  1. 1. Sustainable use of calcium nitrate fertilizer under variable precipitation, soil properties and crop management

    University essay from SLU/Dept. of Soil and Environment

    Author : Liliana Marcela Daza Gomez; [2023]
    Keywords : nitrogen.; calcium nitrate; ammonium-based fertilizers; urea; nitrate leaching; nitrous oxide emissions; crop yield;

    Abstract : 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. READ MORE

  3. 2. Kretslopp från avlopp : enterokocker som indikatororganismer och bärare av Vankomycinresistens

    University essay from SLU/Department of Molecular Sciences

    Author : Maja Berglind; [2023]
    Keywords : Enterococcus; enterokocker; urea; E. faecalis; E. faecium; hygienisering; ureahygienisering; ammoniak; svartvatten; klosettvatten; klosettavloppsvatten; avloppsvatten; antibiotikaresistens; Vankomycin; Vancomycin; CHROMagar; Slanetz-Bartley agar; indikatororganism;

    Abstract : Tillförsel av växtnäring på åkermark är nödvändig för matproduktionen. En återförsel av mänskliga fekalier och urin via källsorterat toalettavfall (klosettavloppsvatten) ökar cirkulationen av näring, bidrar till förbättrad jordhälsa och minskar risken för övergödning i vattendrag. READ MORE

  4. 3. Techno-economic and environmental analysis of alternative pathways for urea fertilizer production.

    University essay from Linköpings universitet/Industriell miljöteknik

    Author : Wilson Rodriguez; [2023]
    Keywords : Urea fertilizer; ammonia; natural gas; biogas; GWP; PE; hydrogen; nitrogen; technologies.;

    Abstract : The increasing global population has placed significant pressure on meeting food demands, leading to the widespread use of fertilizers to enhance crop yields. Urea, being the most used fertilizer globally, has contributed to improved agricultural productivity. READ MORE

  5. 4. Urea-Based Treatments of Unretted Hemp Fibres from Residual Streams

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Danilo Esteban Ortiz Sarasty; [2023]
    Keywords : Finola waste; stalks; unretted hemp fibres; degumming; cold urea alkali; microwave-urea;

    Abstract : More sustainable and efficient degumming methods are required to extract finner bast fibres, especially from agro-industrial waste streams such as stalks from hemp for food purposes. For this reason, in this study, two urea-based treatments were evaluated as degumming alternatives for unretted hemp fibres from residual streams, one at cold and alkaline conditions (CUA) and the other in combination with microwave radiation (MWU). READ MORE

  6. 5. Activity and stability of urease enzyme molecules for on-site urea measurement in milk

    University essay from Linköpings universitet/Sensor- och aktuatorsystem

    Author : Emma Valtersson; [2022]
    Keywords : Kemisk biologi; urea i mjölk; biosensor;

    Abstract : The nitrogenous metabolite urea is an important biomarker that indicates cows’ nutritional intake. Today, determining the urea concentration from milk samples requires analysis techniques in a lab which is time-consuming and expensive. READ MORE