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Visar resultat 1 - 5 av 18 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Optical characterization of dilute nitride semiconductors and related quantum structures

   Författare :Morteza Izadifard; G. Yu. Rudko; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dilute nitrides; optoelectronics; photonics; Optical physics; Optisk fysik;

   Sammanfattning : Dilute nitrides (i.e. LÄS MER

3. 2. Studies on arterial endothelial function and intima-media thickness using ultrasound technique

   Författare :Morteza Rohani; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Ultrasound; atherosclerosis; flow mediated dilatation; endothelial function; carotid arteries; thoracic aorta; brachial artery; coronary artery disease; nicotine; snuff; prednisolone; rheumatoid arthritis;

   Sammanfattning : Background: The development of ultrasonographic arterial imaging, high-resolution B-mode ultrasonography, has created a technical basis for a new diagnostic approach to atherosclerotic disease by offering the possibility of accurate and reproducible quantification of the structural and functional changes in the arterial wall. Flow-mediated dilation (FMD) of the brachial artery and carotid intima-media thickness (IMT) have been shown to be good surrogate markers of atherosclerosis. LÄS MER

4. 3. RF Energy Harvesting for Zero-Energy Devices and Reconfigurable Intelligent Surfaces

   Författare :Morteza Tavana; Emil Björnson; Jens Zander; George Alexandropoulos; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronic waste; energy harvesting; Internet of Things; optimization; phased array; reconfigurable intelligent surfaces; stochastic geometry; wireless power transfer; wireless sensor networks; zero-energy devices.; Elektronikskrot; energiutvinning; sakernas internet; optimering; fasstyrda antenner; omkonfigurerbara intelligenta ytor; stokastisk geometri; trådlös kraftöverföring; trådlösa sensornätverk; nollenergienheter.; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : The growth of Internet of Things (IoT) networks has made battery replacement in IoT devices increasingly challenging. This issue is particularly pronounced in scenarios with a large number of IoT devices, in locations where IoT devices are difficult to access, or when frequent replacement is necessary. LÄS MER

5. 4. RF Wireless Power Transfer for IoT Applications

   Författare :Morteza Tavana; Emil Björnson; Jens Zander; Ayça Özçelikkale; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronic waste; Energy harvesting; Internet of things; transceivers; wireless power transfer; wireless sensor networks; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : With the emergence of the Internet of things (IoT) networks, the replacement of batteries for IoT devices became challenging. In particular, the battery replacement is more expensive and cumbersome for scenarios where there are many IoT devices; or where the IoT devices are in unreachable locations; or when they have to be replaced often. LÄS MER

7. 5. Numerical modelling of biomass thermochemical conversion and potassium release

   Författare :Seyed Morteza Mousavi; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Numerical modelling; particle model; bed model; CFD simulation; biomass; pyrolysis; ; combustion; gasification; potassium release; alkali;

   Sammanfattning : The use of biomass as a renewable source of energy has been increasing over the past few decades, and biomass is regarded as a promising replacement for fossil fuels. Thermochemical conversion of biomass is a common approach for biomass utilization with a relatively short conversion time. LÄS MER