Search for dissertations about: "Cleaner production"

Showing result 21 - 25 of 28 swedish dissertations containing the words Cleaner production.

  2. 21. Challenges and Advantages of Stratified Combustion in Gasoline Direct-Injected Engines

    Author : Anders Johansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Particulate Mass; SGDI; Particulate Number; Direct-Injected; GDI; Particulate Sampling; Spray-Guided; Particulates; Stratified Charge; Gasoline; DI;

    Abstract : The modern world is based on an extensive transport network in which passenger vehicles play a major role. Although passenger vehicles have improved significantly in recent decades, they still contribute to the pollution of our environment and global warming. Consequently, new ways of reducing their emissions are needed. READ MORE

  4. 22. On Waveform Distortion in Modern Low-Voltage Installations with Multiple Nonlinear Devices

    Author : Tatiano Busatto; Math Bollen; Xiongfei Wang; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power quality; power system harmonics; power electronics; nonlinear systems; Electric Power Engineering; Elkraftteknik;

    Abstract : The continuing society quest for more comfort combined with the need to minimize global environmental impacts is constantly introducing new technologies into our daily lives. Among the recent developments, the advances in energy-efficient lighting and renewable energy technologies have enabled a maturity level in cleaner electricity production and efficient use of energy. READ MORE

  5. 23. Induction of a non-allergic inflammation in the human respiratory tract by organic dust

    Author : Britt-Marie Larsson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Swine farmers; airway inflammation; bronchial responsiveness; organic dust; interleukins; lekotrienes;

    Abstract : Swine farming is an occupation associated with high exposure levels to organic dust, but gases such as ammonia and hydrogen sulphide are also contributing to the potentially hazardous exposure. The prevalences for respiratory symptoms, chronic or work-related, are increased among swine farmers, compared to both the normal population as well as other farming categories. READ MORE

  6. 24. RhPt and Ni based catalysts for fuel reforming in energy conversion

    Author : Angélica Viviana González Arcos; Lars J. Pettersson; Klas Engvall; Anker Jensen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RhPt bimetallic catalysts; Ni catalysts; ceria-zirconia; potassium tungsten bronze; zirconium dioxide; autothermal reforming; biodiesel; diesel; sulfur; deactivation; tar reforming; steam reforming; biomass gasification; auxiliary power units; naphthalene; Chemical Engineering; Kemiteknik;

    Abstract : Although current trends in global warming are of great concern, energy demand is still increasing, resulting in increasing pollutant emissions. To address this issue, we need reliable renewable energy sources, lowered pollutant emissions, and efficient and profitable processes for energy conversion. READ MORE

  7. 25. Particulate Matter Emissions from Partially Premixed Combustion with Diesel, Gasoline and Ethanol

    Author : Mengqin Shen; Förbränningsmotorer; []
    Keywords : PPC; PM emissions; Diesel; Gasoline; Ethanol; Particle size distribution;

    Abstract : To achieve cleaner combustion and higher efficiency in compression ignition (CI) engines, many new combustion strategies have been developed. Among these new concepts, partially premixed combustion (PPC) attracts a lot of attention, because of its possibility to achieve simultaneously low soot and NOx. READ MORE