Sökning: "DRIFTS"

Visar resultat 1 - 5 av 44 avhandlingar innehållade ordet DRIFTS.

  1. 1. In Search of Scientific Methods for Conservation of Historic Silk Costumes

    Författare :Johanna Nilsson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; HUMANIORA; NATURAL SCIENCES; HUMANITIES; silk; artificial ageing; Queen Christina; historic costumes; conservation; ATR-FTIR; SEC; DRIFTS; tensile tests;

    Sammanfattning : The general aim of this dissertation is to lay ground for the evaluation of conservation methods for historic costumes. The Royal Armoury, Stockholm has a large number of 17th century men’s garments, many of them made of silk and in need of conservation. LÄS MER

  2. 2. Orthoptic Findings and Visual Fixation in children in general and in children with surgically treated hydrocephalus

    Författare :Eva Aring; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :Strabismus; abnormal head posture; drifts; intrusive saccades; meningomyelocele;

    Sammanfattning : Background: The ocular motor system is complex and dependent on the cooperation of many different areas of the brain. Ocular motor functions may be disturbed by various factors resulting in strabismus, and abnormal fixational behaviour, which may interfere on a multitude of visual functions. LÄS MER

  3. 3. Ring-opening catalysts for cetane improvement of diesel fuels

    Författare :Ulf Nylén; Magali Boutonnet; Sven Järås; François Garin; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ring opening selective ; naphthenic structure; indan; light cycle oil LCO ; cetane; Pt-Ir catalyst; microemulsion; XPS; TPR; TEM; DRIFTS; sulphur analysis; GC-SCD; Chemical engineering; Kemiteknik;

    Sammanfattning : The global oil refining industry with its present product distribution essentially shifted towards fuels such as gasoline and diesel will most likely hold the fort for considerable time. However, conditions are changing and refinery survival will very much depend on long-term planning, process and product flexibility and being at the frontiers of refining technology, a technology where catalysts play leading roles. LÄS MER

  4. 4. Reactions on nanostructured and microporous surfaces

    Författare :Anna Clemens; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cu-CHA; XRD; solid-state ion-exchange; materials characterisation; electron microscopy; NH3-SCR; zeolites; catalysis; nanostructured graphite; Water ice; DRIFTS; XPS; NOx reduction; Cu-SSZ-13; temperature programmed desorption; ultra-high vacuum; intercalation; UV-Vis spectroscopy;

    Sammanfattning : Interactions between surfaces and molecules play a central role in various fields where catalysis is one example. In order to understand different surface processes, physicochemical characterisation of the surface materials and molecules is required. LÄS MER

  5. 5. CO oxidation over platinum-ceria catalysts -- Structural dynamics and reaction mechanisms

    Författare :Mengqiao Di; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; CO oxidation; Platinum catalysts; EXAFS; XANES; Operando spectroscopy; DRIFTS;

    Sammanfattning : Catalytic oxidation of carbon monoxide (CO) continues to be important due to its wide applicability in emission control, in-door air cleaning, fuel cell efficiency enhancement, chemical feedstocks purification etc. The transportation sector emits most of the CO emissions. LÄS MER