Sökning: "radon"

Visar resultat 6 - 10 av 50 uppsatser innehållade ordet radon.

1. 6. The Influence of Natural Radon Occurrence on the Severity of the COVID-19 Pandemic in Germany: a Spatial Analysis

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Ignatius Gabriel Aloysius Maria Perera; [2022]
   Nyckelord :Geography; GIS; Epidemiology; Germany; SARS-CoV-2; COVID-19; Radon; Spatial regression; Earth and Environmental Sciences;

   Sammanfattning : The exposure to naturally occurring, radioactive noble gas radon is known to cause permanent damage in lung tissue. Lung diseases and prior radiation of lung tissue have been identified as contributing to a severe progression of COVID-19. LÄS MER

3. 7. Uranium Mineralizations at Kiirunavaara,Northernmost Sweden

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Diego Segovia Menard; [2022]
   Nyckelord :kiirunavaara; uranium; EPMA; water; hydrothermal;

   Sammanfattning : In recent years, a variably high amount of uranium (U) and radon (Rn) were found in the water and airof the Kiirunavaara mine in Kiruna, northern Sweden. The Swedish Agency for Marine and WaterManagement (Havs och vattenmyndigheten) has maximum limits for “special polluting substances” inwater that is released to natural recipients (HVMFS 2019:25), therefore, the mining company LKAB,owner and operator of the Kiirunavaara mine, decided to conduct a study to investigate the issueregarding these findings, triggering this master thesis. LÄS MER

4. 8. Well-posedness of a class of continuity equations posed in the space of time-dependent Radon measures

   Kandidat-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

   Författare :Erik Lieback; [2022]
   Nyckelord :Measure solutions; Population dynamics;

   Sammanfattning : We consider a class of partial differential equations whose solutions are elements of a space of measures. The motivation for modeling with measures is that sometimes selection-mutation models or models of for example population dynamics or opinion-formation are designed to describe not functions, but rather evolving distributions which can be described by measures. LÄS MER

5. 9. Verification and Validation of DORN Engineering model : Joint Master Program in Space Science and Technology Spacemasters

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Arjun Menon Mohana Krishnan; [2022]
   Nyckelord :Validation; Testing and Analysis of Engineering model; Alpha spectroscopy;

   Sammanfattning : This report presents the various test procedures carried out to verify and validate the engineering model of the DORN instrument. DORN is an instrument designed to perform alpha spectroscopy on the lunar surface, this instrument will be onboard Chang’e 6 lunar mission which is a lunar sample return mission conducted by China. LÄS MER

7. 10. Parameter Estimation of LPI Radar in Noisy Environments using Convolutional Neural Networks

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Filip Appelgren; [2021]
   Nyckelord :Deep Learning; LPI; Radar; CNN; Parameter estimation; Djupinlärning; LPI; Radar; Faltningsnätverk; Parameterestimering;

   Sammanfattning : Low-probability-of-intercept (LPI) radars are notoriously difficult for electronic support receivers to detect and identify due to their changing radar parameters and low power. Previous work has been done to create autonomous methods that can estimate the parameters of some LPI radar signals, utilizing methods outside of Deep Learning. LÄS MER