Faculty of Sciencehttp://dir.muni.ac.ug/xmlui/handle/20.500.12260/3182024-03-29T09:50:32Z2024-03-29T09:50:32ZGlobal Positioning Satellite (GPS) - SCINDA data.Scintillation Decision Aid (SCINDA) projecthttp://dir.muni.ac.ug/xmlui/handle/20.500.12260/6262024-03-29T08:40:14Z2011-01-01T00:00:00ZGlobal Positioning Satellite (GPS) - SCINDA data.
Scintillation Decision Aid (SCINDA) project
This dataset contains processed amplitude Scintillation intensity index (S4).
2011-01-01T00:00:00ZGenomic characterization of SARS-CoV-2 from Uganda using MinION nanopore sequencingKia, PraiscilliaKatagirya, EricKakembo, Fredrick ElishamaAdera, Doreen AtoNsubuga, Moses LuutuYiga, FahimAloyo, Sharley MelissaAujat, Brendah RonahAnguyo, Denis FoeKatabazi, Fred AshabaKigozi, EdgarJoloba, Moses L.Kateete, David Patrickhttp://dir.muni.ac.ug/xmlui/handle/20.500.12260/6242024-03-19T09:20:51Z2023-11-22T00:00:00ZGenomic characterization of SARS-CoV-2 from Uganda using MinION nanopore sequencing
Kia, Praiscillia; Katagirya, Eric; Kakembo, Fredrick Elishama; Adera, Doreen Ato; Nsubuga, Moses Luutu; Yiga, Fahim; Aloyo, Sharley Melissa; Aujat, Brendah Ronah; Anguyo, Denis Foe; Katabazi, Fred Ashaba; Kigozi, Edgar; Joloba, Moses L.; Kateete, David Patrick
SARS-CoV-2 undergoes frequent mutations, affecting COVID-19 diagnostics, transmission and vaccine efficacy. Here, we describe the genetic diversity of 49 SARS-CoV-2 samples from Uganda, collected during the COVID-19 waves of 2020/2021. Overall, the samples were similar to previously reported SARS-CoV-2 from Uganda and the Democratic Republic of Congo (DRC). The main lineages were AY.46 and A.23, which are considered to be Delta SARS-CoV-2 variants. Further, a total of 268 unique single nucleotide variants and 1456 mutations were found, with more than seventy percent mutations in the ORF1ab and S genes. The most common mutations were 2042C>G (83.4%), 14143C>T (79.5%), 245T>C (65%), and 1129G>T (51%), which occurred in the S, ORF1ab, ORF7a and N genes, respectively. As well, 28 structural variants—21 insertions and 7 deletions, occurred in 16 samples. Our findings point to the possibility that most SARS-CoV-2 infections in Uganda at the time arose from local spread and were not newly imported. Moreover, the relatedness of variants from Uganda and the DRC reflects high human mobility and interaction between the two countries, which is peculiar to this region of the world.
2023-11-22T00:00:00ZWhich stars can form planets: Planetesimal formation at low metallicitiesAndama, GeoffreyMah, JingyiBitsch, Bertramhttp://dir.muni.ac.ug/xmlui/handle/20.500.12260/6222024-03-15T09:51:41Z2024-01-26T00:00:00ZWhich stars can form planets: Planetesimal formation at low metallicities
Andama, Geoffrey; Mah, Jingyi; Bitsch, Bertram
The diversity of exoplanets has been linked to the disc environment in which they form, where the host star metallicity and the formation pathways play a crucial role. In the context of the core accretion paradigm, the initial stages of planet formation require the growth of dust material from micrometre-sized to planetesimal-sized bodies before core accretion can kick in. Although numerous studies have been conducted on planetesimal formation, it is still poorly understood how this process takes place in low-metallicity stellar environments. In this work, we explore how planetesimals are formed in stellar environments with primarily low metallicities. We performed global 1D viscous disc evolution simulations, including the growth of dust particles and the evaporation and condensation of chemical species at ice lines. We followed the formation of planetesimals during disc evolution and tested different metallicities, disc sizes, and turbulent viscosity strengths. We find that at solar and sub-solar metallicities, there is a significant increase in the midplane dust-to-gas mass ratios at the ice lines, but this leads to planetesimal formation only at the water–ice line. In our simulations, [Fe/H] = −0.6 is the lower limit of metallicity for planetesimal formation where a few Earth masses of planetesimals can form. Our results further show that for such extreme disc environments, large discs are more conducive than small discs for forming large amounts of planetesimals at a fixed metallicity because the pebble flux can be maintained for a longer time, resulting in a longer and more efficient planetesimal formation phase. At lower metallicities, planetesimal formation is less supported in quiescent discs compared to turbulent discs, which produce larger amounts of planetesimals, because the pebble flux can be maintained for a longer time. The amount of planetesimals formed at sub-solar metallicities in our simulations places a limit on core sizes that could potentially result only in the formation of super-Earths.
2024-01-26T00:00:00ZReport on: space weather and upper atmospheric data analysis training workshop for East African Community, held during, 25th - 29th September 2023Mungufeni, Patrickhttp://dir.muni.ac.ug/xmlui/handle/20.500.12260/6002024-01-21T20:54:35Z2023-10-19T00:00:00ZReport on: space weather and upper atmospheric data analysis training workshop for East African Community, held during, 25th - 29th September 2023
Mungufeni, Patrick
This document contains technical report on Space Weather and Upper Atmospheric data analysis training workshop for East African Community, held in Muni University from 25th - 29th September 2023. The report contains; a preamble, technical presentations, and workshop evaluation.
2023-10-19T00:00:00Z