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Found 3 essays matching the above criteria.

1. 1. Anaerobic Co-digestion of steam pretreated wheat straw and sewage sludge

   University essay from Lunds universitet/Bioteknik (master); Lunds universitet/Bioteknik (CI)

   Author : Virginia Tosi; [2021]
   Keywords : Anaerobic co-digestion; wheat straw pretreatment; nutrients availability; OLR; VFA acumulation; Biotechnology; Technology and Engineering;

   Abstract : Anaerobic digestion (AD) of wastes and residues is a widely applied and explored process. However, when the process is not optimized, inadequate concentrations of nutrients and inhibitory compounds are common and can lead to low maximum organic loading rates and increased risk of process problems, low organic dry solids degradation rate and reduced methane yields. READ MORE

3. 2. Simulation of Gradient Formation in Cemented Carbides

   University essay from KTH/Materialvetenskap

   Author : Armin Salmasi; [2016]
   Keywords : Cemented Carbides; Gradient; Simulation;

   Abstract : The aim of the present work is to study the formation of the cubic carbide phase (gamma phase) free gradient zone and the gamma cone structure at the edges of gradient sintered cemented carbides. Four types of cemented carbides; WCTi(C,N)-Co, WC-Ti(C,N)-Ni, WC-Ti(C,N)-Fe, WC-(Ti,Ta,NB)(C,N)-Co were gradient sintered and the thicknesses of the gradients were measured. READ MORE

4. 3. Elementkoncentrationer i gran utmed en markfuktighetsgradient

   University essay from SLU/Dept. of Forest Soils

   Author : Susanna Isberg; [2002]
   Keywords : picea abies; löv; stammar; bark; grenar; mineralinnehåll; mineraler; spårämnen; grundvatten; koncentration; markfuktighetsgradient; Sverige;

   Abstract : One key factor in silviculture today is sustainability. In order to achieve sustainability it may be important to restore lost nutrients to the forest after clearcutting. In order to calculate the removal, you need to know how much of different elements you will find in different tree compartments. READ MORE