Sökning: "Spectroscopy Near-Infrared"

Visar resultat 21 - 25 av 97 avhandlingar innehållade orden Spectroscopy Near-Infrared.

1. 21. Photothermal antibacterial biomaterials utilising gold nanorods and near-infrared light

   Författare :Maja Uusitalo; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nearinfrared light; gold nanorods; photothermal therapy; biomaterial-associated infections;

   Sammanfattning : Biomaterials serve an integral role in modern medicine, providing essential functions for therapeutic, prosthetic, and diagnostic purposes. However, once introduced into a biological setting, biomaterials are prone to bacterial colonisation, resulting in hard-to-treat infections with severe clinical consequences. LÄS MER

3. 22. Infrared spectroscopy as a tool to reconstruct past lake-ecosystem changes : Method development and application in lake-sediment studies

   Författare :Carsten Meyer-Jacob; Richard Bindler; Hendrik Vogel; Jan Karlsson; John F. Boyle; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fourier transform infrared spectroscopy; visible-near infrared spectroscopy; PLS regression; biogenic silica; climate change; carbon cycling; lake-water quality; geochemistry; paleolimnology; Holocene; Lake El’gygytgyn; Torneträsk;

   Sammanfattning : Natural archives such as lake sediments allow us to assess contemporary ecosystem responses to climate and environmental changes in a long-term context beyond the few decades to at most few centuries covered by monitoring or historical data. To achieve a comprehensive view of the changes preserved in sediment records, multi-proxy studies – ideally in high resolution – are necessary. LÄS MER

4. 23. Characterisation of mammalian cell culture processes with NIR spectroscopy

   Författare :Per Sivertsson; KTH; []
   Nyckelord :near-infrared NIR spectroscopy; cell culture; mammalian cell culture; characterisation; glucose; lactate; ammonia; cell content; viability; multivariate analysis; principal component analysis PCA ; partial least squares regression PLS ; score plo;

   Sammanfattning : The importance of recombinant proteins produced by mammaliancell culture has increased dramatically due to the discoveriesin the field of recombinant biotechnology. Therefore,optimising and gaining process knowledge about cell culture hasalso gained in interest. LÄS MER

5. 24. Applications of visible and near infrared spectroscopy for sorting and identification of tree seeds

   Författare :Mostafa Farhadi; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : Seeds are the most commonly used regeneration material for reforestation purpose; hence interest in “precision sowing” among nurseries is high due to the high cost of containerized seedling production. In addition, the increased interest in growing hybrid larch in commercial forestry has raised concerns about the purity of hybrid larch seed lots, as there are large proportions of pure parental seeds mixed with hybrid larch seed lots. LÄS MER

7. 25. Brain functional near infrared spectroscopy in human infants : cerebral cortical haemodynamics coupled to neuronal activation in response to sensory stimulation

   Författare :Marco Bartocci; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Near infrared spectroscopy; newborn; infant; brain; sensory stimulation; cortical activation;

   Sammanfattning : The assessment of cortical activation in the neonatal brain is crucial in the study of brain development, as it provides precious information for how the newborn infant processes external or internal stimuli. Thus far functional studies of neonates aimed to assess cortical responses to certain external stimuli are very few, due to the lack of suitable techniques to monitor brain activity of the newborn. LÄS MER