Faculty of Science & Technology (FST): Recent submissions
Now showing items 141-160 of 4283
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Antiplasmodial and antileishmanial flavonoids from Mundulea sericea
(University of Nairobi, 2020)Five known compounds (1-5) were isolated from the extract of Mundulea sericea leaves. Similar investigation of the roots of this plant afforded an additional three known compounds (6-8). The structures were elucidated using ... -
Swallowtail butterflies (Lepidoptera: Papilionidae) species diversity and distribution in Africa: The Papilionidae collection at the National Museums of Kenya, Nairobi, Kenya
(University of Nairobi, 2020)Background: Species data from the Museum collections have been shown to be of great value as a tool for prioritising conservation actions in Africa (Fjeldsa and Tushabe 2005). The National Museums of Kenya (NMK) have an ... -
Prevalence of tick-transmitted pathogens in cattle reveals that Theileria parva, Babesia bigemina and Anaplasma marginale are endemic in Burundi
(Springer, 2021-01-05)Background Tick-borne diseases (TBDs) constitute a major constraint for livestock development in sub-Saharan Africa, with East Coast fever (ECF) being the most devastating TBD of cattle. However, in Burundi, detailed ... -
Biochemical Methane Potential (BMP) of Market Wastes from Nairobi Inoculated With Dagoretti Slaughterhouse Waste
(University of Nairobi, 2020)Background: Anaerobic degradation entails the conversion of substrate organic matter to biogas. A wide variety of substrate has been employed. The biochemical methane potential of twenty market wastes was investigated ... -
Hybridized Robust Chemometrics Approach for Direct Rapid Determination of Trace Biometals in Tissue Utilizing Energy Dispersive X-ray Fluorescence and Scattering (Edxrfs) Spectrometry
(University of Nairobi, 2018)Direct rapid energy dispersive X-ray fluorescence and scattering (EDXRFS) analysis of trace biometals in soft body tissues is important because it has an immense potential for biomedical applications. Unfortunately this ... -
Trace Metal Biomarker Based Cancer Diagnostics in Body Tissue by Energy Dispersive X-ray Fluorescence and Scattering (Edxrfs) Spectrometry
(University of Nairobi, 2019)Direct diagnosis and characterization of cancer in tissue via trace biometals analyzed by energy dispersive X-ray fluorescence (EDXRF) spectrometry is challenging, as it requires sensitive detection and accurate quantitative ... -
Rapid Nuclear Forensics Analysis via Machine-learning-enabled Laser-induced Breakdown Spectroscopy (Libs)
(University of Nairobi, 2019)Nuclear forensics (NF) is an analytical methodology that involves analysis of intercepted nuclear and radiological materials (NRM) so as to establish their nuclear attribution. The critical challenge in NF currently is ... -
Investigation of the Electrocatalytic Properties of Spherical Palladium Nanoparticles and Palladium (100) Iridium Bimetallic Nanocomposites Towards Ammonia Electrooxidation on …
(University of Nairobi, 2015)The electrocatalytic properties of cubic palladium-iridium {Pd(100)Ir} bimetallic nanocomposite and spherical nanoparticles {Pd NPs} towards the electrochemical oxidation of ammonia were investigated in sodium hydroxide ... -
Spatial and temporal trends of polychlorinated biphenyls in water and sediment from Nairobi River, Kenya
(University of Nairobi, 2020)Polychlorinated biphenyls (PCBs) are chemicals that have become ubiquitous environmental pollutants due to their past use, persistence, and long-range transport thus requiring continuous monitoring. Therefore, this research ... -
Formulation of Slow Release Npk Fertilizer (Cellulose-graft-poly (Acrylamide)/nano-hydroxyapatite/soluble Fertilizer) Composite and Evaluating Its N Mineralization Potential
(University of Nairobi, 2018)Polymer nano-composite fertilizer formulation has the potential to enhance nutrient use efficiency. Slow release fertilizer (SRF) composite was formulated by incorporating nano-hydroxyapatite (nano-HA) and water ... -
Characterization of Water Hyacinth Cellulose-g-poly (Ammonium Acrylate-co-acrylic Acid)/nano-hydroxyapatite Polymer Hydrogel Composite for Potential Agricultural Application
(University of Nairobi, 2020)Polymer nano-composite was prepared by grafting partially neutralized acrylic acid onto swollen cellulose iso-lated from water hyacinth in the presence of nano-hydroxyapatite (nano-HA) usingN,N-methylene-bis-acrylamide ... -
January 2018 Waterbird Count Results in the Rift Valley, Nairobi, Central, Coast, Amboseli and Yala Swamp
(University of Nairobi, 2018)Waterbird counts were carried out in 48 sites across Kenya during the months of January and February 2018. A total of 294,950 individuals of 126 waterbird species were recorded. Lake Bogoria had the highest number with ... -
Radiometric Survey of the Tyaa River Sand Mine in Kitui, Kenya
(University of Nairobi, 2020)Gamma spectroscopic analyses of sand and rock samples from Tyaa River report an average activity concentration of 33 ± 1, 55 ± 2.8 and 812 ± 40.46 Bqkg-1 for 226Ra, 232Th and 40K, respectively in the sand. A similar analysis ... -
Synergistic anti-inflammatory activities of a new flavone and other flavonoids from Tephrosia hildebrandtii vatke
(University of Nairobi, 2020)A new flavone, named hildeflavone (1) along with 7 other known flavonoids were isolated from the aerial parts of Tephrosia hildebrandtii Vatke. Their characterisation was based on NMR and MS data analysis. The anti-inflammatory ... -
Validation of a Quantitative Proton Nuclear Magnetic Resonance Spectroscopic Screening Method for Coffee Quality and Authenticity (NMR Coffee Screener)
(University of Nairobi, 2020)Monitoring coffee quality as a means of detecting and preventing economically motivated fraud is an important aspect of international commerce today. Therefore, there is a compelling need for rapid high throughput validated ... -
LC-MS-Based Metabolomics for the Chemosystematics of Kenyan Dodonaea viscosa Jacq (Sapindaceae) Populations
(University of Nairobi, 2020)Dodonaea viscosa Jacq (Sapindaceae) is a medicinal plant with a worldwide distribution. The species has undergone enormous taxonomic changes which caused confusion amongst plant users. In Kenya, for example, two varieties ... -
Tryptophan-like and humic-like fluorophores are extracellular in groundwater: implications as real-time faecal indicators
(University of Nairobi, 2020)Fluorescent natural organic matter at tryptophan-like (TLF) and humic-like fluorescence (HLF) peaks is associated with the presence and enumeration of faecal indicator bacteria in groundwater. We hypothesise, however, that ... -
Proximity Density Assessment and Characterization of Water and Sanitation Facilities in the Informal Settlements of Kisumu City: Implications for Public Health Planning
(University of Nairobi, 2020)Access to water and sanitation remain a challenge in many developing countries, especially in pro-poor urban informal settlements where socioeconomic livelihoods are generally low. The aim of this study was to characterise ... -
Highlights of the 3rd ISCB Africa Student Council Symposium 2019 in Ghana
(University of Nairobi, 2020)The article elaborates on the program highlights of the 3rd African Student Council Symposium 2019. The one-day symposium was held in Kwame Nkrumah University of Science and Technology (KNUST), Ghana, on 11 November 2019 ... -
Varietal differences in physiological and biochemical responses to salinity stress in six finger millet plants
(University of Nairobi, 2020)Finger millet is an important cereal that is grown in semi-arid and arid regions of East-Africa. Salinity stress is a major environmental impediment for the crop growth and production. This study aimed to understand the ...