Search for dissertations about: "scavenging"

Showing result 21 - 25 of 117 swedish dissertations containing the word scavenging.

  2. 21. A Two-Stroke Range Extender Engine For Heavy Duty BEV applications

    Author : Lennarth Zander; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas exchange; after burner; single cylinder; Two-stroke engine; Range extender; BEV; Battery electric vehicles;

    Abstract : A back-up range extender (REX) is proposed to support battery electric vehicles (BEV) for heavy duty applications. A single cylinder crank case scavenged two-stroke SI-internal combustion engine (ICE) with a turbocharger system is considered powerful and small enough to be installed directly on the existing electric machine in the electric powertrain. READ MORE

  4. 22. Cattle for beads : The archaeology of historical contact and trade on the Namib Coast

    Author : Jill Kinahan; Uppsala universitet; []
    Keywords : HUMANIORA; HUMANITIES; Archaeology; Historical archaeology; contact; indigenous response; glass trade beads; commercial ceramics; nineteenth century; Namib coast; Arkeologi; Archaeology subjects; Arkeologiämnen; arkeologi; Archaeology;

    Abstract : Early contacts between indigenous pastoralists at Walvis Bay on the Namib Coast and Western seafarers are poorly documented and little understood. Trade augmented regional exchange networks with a range, of archaeologically visible and easily identifiable objects. READ MORE

  5. 23. Forage legumes as feed for pigs in smallholder production systems in the North of Lao PDR : production systems, forage biomass yield and protein nutrition

    Author : Phonepaseuth Phengsavanh; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : This thesis sought to characterise and understand existing smallholder pig production systems in the North of Lao PDR and to investigate the role of forage legumes as alternative protein sources for pigs in smallholder production systems. A survey found that there were three main pig rearing systems, free-scavenging, semi-scavenging and confinement (enclosures and pens), in the study areas. READ MORE

  6. 24. Ion escape from Mars

    Author : Qi Zhang; Mats Holmström; Xiao-Dong Wang; Shahab Fatemi; Hans Nilsson; David Andrews; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : When the solar wind reaches the Mars obstacle, mass loading by planetary ions slows down the solar wind and raises the bow shock. The Martian atmosphere is undergoing the a scavenging by the solar wind without the protection of a global magnetic field. Atmospheric escape is an important process for the evolution of the Martian climate. READ MORE

  7. 25. Molecular and Metabolic Aspects of Plant and Bacterial Salt Tolerance

    Author : Peter Olsson; Tillämpad biokemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biotechnology; Bioteknik; metabolism; gamma-aminobutyric acid; Nicotiana tabacum; salinity; hypoxia; heamoglobin; microarray; glycine betaine; NaCl; GABA; Vitreoscilla; calmodulin; Esherichia coli; tobacco; Biokemi; Metabolism; Biochemistry; Arabidopsis;

    Abstract : Salt stress is one of the historically as well as potentially largest agriculture problem humans have faced. Researchers have investigated and tried to solve this problem for a long time. Over 20 reviews have been written on this topic the last five years. READ MORE