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Found 4 essays matching the above criteria.

  1. 1. PILCs for trapping phosphorus in a heavy duty engine exhaust system : An experimental evaluation of the phosphorus sorption capability of different clay materials

    University essay from Uppsala universitet/Strukturkemi

    Author : Anders Kvarned; [2016]
    Keywords : PILC; PCH; phosphorus sorption; exhaust treatment; catalyst poisoning;

    Abstract : In order to fulfil the requirements in the EURO VI standard, regulating emissions from heavy duty vehicles, the exhaust aftertreatment system needs to maintain its efficiency for at least seven years or 700 000 km. In diesel applications the diesel oxidation catalyst (DOC) is located closest to the engine and is thus the most vulnerable to poisoning contaminants, such as phosphorus originating from fuel and oil additives, which deactivates the catalyst. READ MORE

  3. 2. Understanding and Development of Inter-cell Interference Mitigation mechanism in LTE-A Heterogeneous Network

    University essay from Avdelningen för fysik och elektroteknik

    Author : Bilal Shah; Suman Ghimire; [2013]
    Keywords : ;

    Abstract : In long term evolution Advanced (LTE-A), concept of heterogeneous network (HetNet) has been introduced. Since, spectrum has become a rare resource these days; another mean is to be looked after to improve the existing wireless technology. One possible way is to improve the network topology so that frequency spectrum can be reused. READ MORE

  4. 3. Activity and synergistic action on cellulosic substrates of engineered product-site variants of Hypocrea jecorina Cel7A

    University essay from SLU/Dept. of Molecular Biology (until 131231)

    Author : Umair Saleem; [2012]
    Keywords : cellulase; cellobiohydrolase; lignocellulose; biofuel; protein engineering; biotechnology; thermochemical pretreatment; spruce;

    Abstract : Cellobiohydrolase Cel7A (Hje_Cel7A) from the ascomycete fungus Hypocrea jecorina is the major component of enzyme cocktails for degradation of plant biomass to soluble sugars for conversion to biofuels. It’s active site is enclosed in a cellulose-binding tunnel and it is able to processively cleave off several cellobiose units from the end of a cellulose chain before being released. READ MORE

  5. 4. A case study of selecting suppliers in China

    University essay from IHH, Centre of Logistics and Supply Chain Management

    Author : Xueying Guan; Shenning Wang; [2009]
    Keywords : case study; supplier criteria; supplier selection process; outsourcing; China;

    Abstract : Based on current competitive market, supply chain becomes to be more and more important to overall corporate strategy. Finding good suppliers makes much more senses for the companies nowadays as purchasing is one of the basis parts on the upstream of the supply chain. READ MORE