Sökning: "SEM EDX"

Visar resultat 16 - 20 av 73 avhandlingar innehållade orden SEM EDX.

  1. 16. Investigating the Reaction Kinetics of Tropical Wood Biomass : A Prospect for Energy Recovery

    Författare :Kehinde Oluoti; Högskolan i Borås; []
    Nyckelord :Wood; Pyrolysis; gasification; char; kinetic parameters; SEM-EDX; AAEM; Resursåtervinning; Resource Recovery;

    Sammanfattning : The utilization of wood biomass for energy recovery purposes is a phenomenon that is increasingly attracting attentions from researchers, companies and countries all over the world. The effect of climate change as largely represented by global warming leading to glacier ice melting and an unprecedented rise in sea level is a worrisome development. LÄS MER

  3. 17. Occurrence of Traffic-Derived Microplastics in Different Matrices in the Road Environment

    Författare :Ida Järlskog; Yvonne Andersson-Sköld; Stephan Wagner; Statens väg- och transportforskningsinstitut; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; non-exhaust particles; tire wear particles; road dust; automated SEM EDX; environmental samples; optimized sample preparation; organic pollutants; street sweeping; traffic-derived microplastics; road simulator;

    Sammanfattning : The prevalence of microplastic contamination has raised concerns about the potential risk and impact on the global environment. Traffic-derived microplastics, i.e., tire wear particles (TWP), polymer-modified bitumen, and road markings contribute to the emissions, and TWP are assumed to be one of the largest sources of microplastic emissions. LÄS MER

  4. 18. Surface Chemical Characteristics of Chromium-alloyed Steel Powder and the Role of Process Parameters during Sintering

    Författare :Dimitris Chasoglou; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbothermal reaction; sintering atmosphere; depth profiling; XPS AES; HR SEM EDX; water atomized powder; surface coverage; reduction oxidation; PM steels; sintering; Cr-Mn-spinel oxides; surface oxides;

    Sammanfattning : Powder Metallurgy (PM) is a cost efficient method suitable for sustainable production of structural parts that have strict dimensional tolerances and complex geometries. It has been a common practice to utilize Ni and Cu as alloying elements in PM steels, but the high and fluctuating prices of Ni and the concerns around it associated with health hazards as well as the difficulty in recycling Cu lead the PM industry to search for effective alternatives such as Cr and Mn. LÄS MER

  5. 19. Bonadsmåleri under lupp: Spektroskopiska analyser av färg och teknik i sydsvenska bonadsmålningar 1700-1870

    Författare :Ingalill Nyström; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; bonad; bonadsmåleri; folkkonst; Art Technological Source Research; ATSR; Konstteknologi; materialanalys; färg; tempera; bindemedel; pigment; färgämne; färgstoff; spektroskopi; Raman; FTIR; SEM-EDX Infrared Spectroscopy; FT-Raman; energidispersiv röntgen; Scanning Electron Microscopy-Energy Dispersive X-ray Multispektralteknik; Multi Spectral Imaging System;

    Sammanfattning : The objects of this PhD thesis are Southern Swedish painted wall-hangings: folk art paintings from the 18th and 19th centuries. The aim and objective of the study are: to investigate the construction and manufacturing processes of the painted wall-hangings; to identify both the painting materials and other substances employed; and, to document painting techniques used by different painters within this painted wall-hanging tradition. LÄS MER

  7. 20. Surface Characterization of Soft Magnetic Composite Powder and Compacts

    Författare :Christos Oikonomou; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; X-ray photoelectron spectroscopy XPS ; energy dispersive X-ray spectroscopy EDX ; surface layers; thickness determination; powder metallurgy PM ; soft magnetic composites SMC ; focused ion beam FIB ; depth profiling; high resolution scanning electron microscopy HR SEM ;

    Sammanfattning : .... LÄS MER