Sökning: "DRIFTS"

Visar resultat 1 - 5 av 58 avhandlingar innehållade ordet DRIFTS.

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

   Författare :Johanna Nilsson; Göteborgs universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; 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

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

   Författare :Eva Aring; Göteborgs universitet; []
   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

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

   Författare :Ulf Nylén; Magali Boutonnet; Sven Järås; François Garin; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 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

5. 4. Reactions on nanostructured and microporous surfaces

   Författare :Anna Clemens; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 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

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

   Författare :Mengqiao Di; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; 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