Sökning: "optiska"

Visar resultat 1 - 5 av 222 avhandlingar innehållade ordet optiska.

1. 1. Fourier transform and Vernier spectroscopy using optical frequency combs

   Författare :Amir Khodabakhsh; Aleksandra Foltynowicz; Ove Axner; Frans Harren; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optical frequency comb spectroscopy; molecular absorption; resonant cavity; Fourier transform spectroscopy; Vernier spectroscopy; fysik; Physics;

   Sammanfattning : Optical frequency comb spectroscopy (OFCS) combines two previously exclusive features, i.e., wide optical bandwidth and high spectral resolution, enabling precise measurements of entire molecular bands and simultaneous monitoring of multiple gas species in a short measurement time. LÄS MER

3. 2. Facilitating electron transfer in bioelectrocatalytic systems

   Författare :Alina Sekretaryova; Mats Eriksson; Mikhail Vagin; Anthony Turner; Evgeny Katz; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Bioelectrocatalytic systems are based on biological entities, such as enzymes, whole cells, parts of cells or tissues, which catalyse electrochemical processes that involve the interaction between chemical change and electrical energy. In all cases, biocatalysis is implemented by enzymes, isolated or residing inside cells or part of cells. LÄS MER

4. 3. Novel reagentless electrodes for biosensing

   Författare :Alina Sekretaryova; Mats Eriksson; Mikhail Vagin; Anthony Turner; Sergey Shleev; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Analytical chemical information is needed in all areas of human activity including health care, pharmacology, food control and environmental chemistry. Today one of the main challenges in analytical chemistry is the development of methods to perform accurate and sensitive rapid analysis and monitoring of analytes in ‘real’ samples. LÄS MER

5. 4. Deep Learning for Wildfire Progression Monitoring Using SAR and Optical Satellite Image Time Series

   Författare :Puzhao Zhang; Yifang Ban; Lorenzo Burzzone; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Remote Sensing; Deep Learning; Wildfire; Burned Area Mapping; Synthetic Aperture Radar; Change Detection; Segmentation; Optical and Radar Image Analysis; Sentinel-1; Sentinel-2; fjärranalys; djup inlärning; skogsbrand; kartläggning av brända områden; Synthetic Aperture Radar; upptäckt av förändringar; segmentering; analys av optiska och radarbilder; Sentinel-1; Sentinel-2; Geoinformatik; Geoinformatics;

   Sammanfattning : Wildfires have coexisted with human societies for more than 350 million years, always playing an important role in affecting the Earth's surface and climate. Across the globe, wildfires are becoming larger, more frequent, and longer-duration, and tend to be more destructive both in lives lost and economic costs, because of climate change and human activities. LÄS MER

7. 5. Advanced methods for the calibration of optical tweezers

   Författare :Laura Pérez García; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optiska pincetter; kalibrera; probabilistiska metoder; bayesiansk inferens; styvhet; diffusionskoefficient;

   Sammanfattning : Optiska pincetter har sedan Arthur Ashkin och hans kollegors uppfinning på 1980-talet möjliggjort noggrann manipulation av mikroskopiska partiklar. Denna teknik har haft betydande inverkan inom flera områden, inklusive biologi, fysik, nanoteknik, spektroskopi, mjuka material och nanotermodynamik. LÄS MER