Sökning: "infrared spectroscopy"

Visar resultat 16 - 20 av 213 uppsatser innehållade orden infrared spectroscopy.

  1. 16. Development and Optimization of Near-infrared spectroscopy

    M1-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Amanda Hahlin; [2023]
    Nyckelord :Near-infrared spectroscopy; NIRS; Textile sorting; Principal component analysis; PCA; Post-consumer end-of-life textiles;

    Sammanfattning : With the growing demand for sustainable options, the existing sorting capacities are limiting the potential for fiber-to-fiber recycling. With the help of near-infrared spectroscopy (NIRS), automated sorting of textiles with high accuracy is possible due to the easy access for polymer identification. LÄS MER

  3. 17. Prediction of Plastic Fragments in Recycled Paper Using Near-Infrared Spectroscopy

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Fidan Alieva; [2023]
    Nyckelord :Near-infrared spectroscopy; paper packaging; barrier materials; recycling; multivariate data analysis; Nära-infraröd spektroskopi; pappersförpackningar; barriärmaterial; återvinning; multivariat dataanalys;

    Sammanfattning : Sustainability has gained a lot of attention in the field of research. Researchers and consumers both prioritize sustainability and environmental issues over previously dominant materials, such as plastic. Packaging and disposable items that used to be made of plastic have largely been replaced with paper. LÄS MER

  4. 18. The use of hyperspectral sensors for quality assessment : A quantitative study of moisture content in indoor vertical farming

    Master-uppsats, Mälardalens universitet/Akademin för innovation, design och teknik

    Författare :Arezo Ahaddi; Zeineb Al-Husseini; [2023]
    Nyckelord :Hyperspectral Imaging; lettuce; moisture content; NIR; near-infrared spectroscopy; shelf life; quality assessment; vertical farming; MicroNIR;

    Sammanfattning : Purpose: This research will study how hyperspectral sensoring can assess the moisture content of lettuce by monitoring its growth in indoor vertical farming. Research questions: “What accuracy can be achieved when using hyperspectral sensoring for assessing the moisture content of lettuce leaves grown in vertical farming?” “How can vertical farming contribute to sustainability in conjunction with integration of NIR spectroscopy?” Methodology: This study is an experimental study with a deductive approach in which experiments have been performed using the hyperspectral technologies singlespot sensor and the hyperspectral camera Specim FX17 to collect spectral data. LÄS MER

  5. 19. Microplastics in food webs- occurrence in Lake Vänern brown trout (Salmo trutta) and its main prey

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Hanna Nordström; [2023]
    Nyckelord :microplastic; freshwater; fish; brown trout; mikroplast; sötvatten; fisk; öring;

    Sammanfattning : Over the past decade, research on microplastic pollution has gained significant attention. Research regarding microplastic occurrence in freshwater fish, however is still scarce. While possible pathways have been investigated, passive transfer via ingestion of prey, and possible bioaccumulation in different organs remains relatively unstudied. LÄS MER

  7. 20. Characterization of Bi-incorporated InSb(111)A/B Surfaces : An STM and XPS Study

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Shengpeng Huang; [2023]
    Nyckelord :indium antimonide; surface reconstructions; bismuth deposition; scanning tunneling microscopy; X-ray photoelectron spectroscopy.; Physics and Astronomy;

    Sammanfattning : In recent years, III-V semiconductor materials have received increasing attention due to their admirable electronic properties like direct tunable bandgaps and high charge carrier mobility. Indium Antimonide (InSb) possesses the largest electron mobility among III-V materials and is promising for infrared detectors, high-speed field effect transistors, and spintronics. LÄS MER