Sökning: "infrarött ljus"

Visar resultat 1 - 5 av 38 uppsatser innehållade orden infrarött ljus.

1. 1. Indocyanine-green fluorescence imaging to detect anastomotic insufficiency after esophagectomy

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

   Författare :Love Kildetoft; [2024]
   Nyckelord :Fluorescence; Imaging; Indocyanine-green; ICG; Esophageal cancer; Physics; Photonics; Image Analysis; Blood Perfusion; Anastomotic leakage; Anastomotic insufficiency; Physics and Astronomy;

   Sammanfattning : This research project is concerned with the development of simulation models and image analysis algorithms, as well as instrumentation for characterizing anastomotic leakages after a patient has undergone surgery for esophageal cancer. Anastomotic leakage is a high-incidence complication after esophagectomy, a surgical procedure for esophageal cancer. LÄS MER

3. 2. Automatiserade sorteringsprocesser för textilavfall : En studie av återvinningseffektivitet och resursflöden

   Kandidat-uppsats, KTH/Produktionsutveckling

   Författare :Amanda Gren; [2023]
   Nyckelord :textile waste; automated sorting; recycling; circular economy; climate impact; sustainable consumption and production; textilavfall; automatiserad sortering; återvinning; cirkulär ekonomi; klimatpåverkan; hållbar konsumtion och produktion;

   Sammanfattning : Textilkonsumtion i världen har ökat drastiskt under de senaste decennierna, vilket också syns i övergången till att fast fashion nu dominerar textilindustrin. Även i Sverige har konsumtionen ökat, vilket bidrar till att textilindustrin skapar allvarliga följder för miljön. LÄS MER

4. 3. A cross-correlation analysis of a warm super-Neptune using transit spectroscopy

   Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

   Författare :Elias Önerud; [2023]
   Nyckelord :Cross-correlation; cross-correlation spectroscopy; cross-correlation analysis; super-Neptune; astronomy; astrophysics; WASP-107; WASP-107 b; CRIRES ; SysRem; exoplanet; transmission spectrum; transit;

   Sammanfattning : A study was made in order to deduce whether certain chemical species, namely water (H2O) and carbon monoxide (CO), are present in the atmosphere of the exoplanet WASP-107 b, which lies about 200 light-years away from Earth in the constellation Virgo. The project was carried out at Uppsala University at the Department of Physics and Astronomy. LÄS MER

5. 4. An Infrared Stellar Thermometer: Exploiting IGRINS Spectra

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Emelie Sandved; [2022]
   Nyckelord :Effective temperature; K-giants; surface gravity; oxygen abundance; carbon abundance; CO lines; OH lines; line sensitivities; Physics and Astronomy;

   Sammanfattning : Using the infrared (IR) spectral range when measuring stellar spectra is beneficial compared to using the optical range mainly when observing distant stars through the dust dense interstellar regions in the Galactic mid-plane. Methods to determine stellar parameters from IR spectra are, however, not fully developed yet because technological difficulties in creating reliable IR detectors have slowed the advance of such methods. LÄS MER

7. 5. Photo-physical properties of up-converting NaYF4:Yb-Er,Yb-Mn nanocrystals

   Master-uppsats, KTH/Tillämpad fysik

   Författare :Hongjian Wu; [2022]
   Nyckelord :Appled Physics; Tillämpad fysik;

   Sammanfattning : Rare earth-doped upconversion nanoparticles can emit light with various wavelength from ultraviolet to infrared when excited by near-infrared light. The superior properties including long luminescence lifetime, narrow emission spectra, low toxicity and high chemical stability makes it a promising optical material in bioimaging and other applications. LÄS MER