Faculty of Science: Recent submissions
Now showing items 21-40 of 280
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Effects of nitrogen fertilization and precipitation decline on tree-grass interactions in Southern African Savannas
(University of Zimbabwe, 2018-10)Savannas are heterogeneous ecosystems comprising of a co-dominance of herbaceous and woody species and these ecosystems support millions of people as well as diverse mammalia species. Recent research has established that ... -
Effects of elephant densities on landscape heterogeneity in relation to surface water availability: A GIS and remote sensing-based approach
(2019-10)Predictions have been made on the effect of increased elephant (Loxodonta africana) densities on landscape heterogeneity change as a result of artificial waterholes in semi-arid savanna landscapes of southern Africa. ... -
On cestode and digenean parasites of Clarias gariepinus (Burchell, 1822) from the Rietvlei Dam, South Africa
(Onderstepoort Journal of Veterinary Research, 2006-01-23)Sharptooth catfish, Clarias gariepinus, from the Rietvlei Dam near Pretoria, South Africa were examined for internal platyhelminth parasites. Two adult cestodes, Polyonchobothrium clarias (stomach) (prevalence 71 %, mean ... -
Isolation and characterization of extracts from wild edible and non-edible mushrooms in Zimbabwe
(2019-10)Poor nutrition and an increasing emergence of infectious diseases, particularly in developing countries, represent major threats to human health. Mushrooms are known to possess numerous bioactivities such as antioxidant ... -
GIS and remote sensing applications for modelling the distribution of elephants and their interaction with vegetation
(University of Zimbabwe, 2019-10)Knowledge of elephant (Loxodonta africana) interaction with vegetation is critical for conservation of the mega-herbivore and of other wildlife species found in the ecosystem. Although the impact of elephants on vegetation ... -
The diet of an invasive crayfish, Cherax quadricarinatus (Von Martens, 1868), in Lake Kariba, inferred using stomach content and stable isotope analyses
(Regional Euro-Asian Biological Invasions Centre (REABIC), 2018-01-27)The diet of an invasive crayfish, Cherax quadricarinatus (Von Martens 1868), in Lake Kariba, was investigated using stomach content analysis (SCA) and stable isotope analysis (SIA). The frequency of occurrence of macrophytes ... -
Distribution modelling of Leptocybe Invasa (Hymenoptera: Eulophidae), and an assessment of host susceptibility and relative efficacies of systemic insecticides for gum seedling protection in Zimbabwe
(2017-11-16)Studies were conducted from February 2015 to December 2015 to predict the potential distribution of the blue gum chalcid or Eucalyptus gall wasp, Leptocybe invasa Fisher and La Salle in Zimbabwe, to screen locally available ... -
Speciation and persistence of Tetracycline Antibiotics in the Aquatic environment: Characterization in terms of a Linear Rate Modea
(2016-09)The present work aimed at studying the degradation of tetracycline antibiotics in the aquatic environment with a view of arriving at a linear rate model taking into account microbial, photolytic and hydrolytic degradation, ... -
Heavy metal air pollution study, using a Moss Bio Monitoring technique
(2017-11-16)Air pollution is increasingly becoming a problem in developed and developing countries. As a corrective measure, constant air monitoring has been done using conventional techniques which are costly and time consuming hence ... -
A study of the limnology and ecology of Mazvikadei Reservoir
(2017-11-17)An assessment of the limnology of Mazvikadei reservoir was carried out from May to October 2015. The main objective of the study was to determine whether limnology of the reservoir has changed since the filling phase. The ... -
Modelling spatial distribution of Tsetse (Diptera: Glossinidae) in Masoka area, an unexplored part of Mbire District, Zimbabwe
(2017-11-17)A study was conducted from March 2015 to December 2015 in order to model the distribution of two savannah species of tsetse (Glossina sensu stricto), Glossina morsitans morsitans and G. pallidipes in the Masoka area of the ... -
Food and foraging ecology of Limnothrissa Miodon in the Sanyati Basin, Lake Kariba
(2017-11-14)The aim of the research was to study the feeding behaviour of Limnothrissa miodon (kapenta) with reference to food items in the Sanyati Basin of Lake Kariba. Sampling was carried out from June to December 2015. Fish samples ... -
Knowledge Management System Generic models and architectures: Enhancing uniformity and interoperability of Knowledge Management Systems
(2017-10-12)Despite Knowledge Management becoming important in creating a competitive advantage for organizations, the use of technology in the area has been haphazard partly due to a scarcity of technological models and architectures. ... -
Speciation and Persistence of Tetracycline Antibiotics in the Aquatic Environment: Characterization in terms of a Linear Rate Model
(2017-10-10)The present work aimed at studying the degradation of tetracycline antibiotics in the aquatic environment with a view of arriving at a linear rate model taking into account microbial, photolytic and hydrolytic degradation, ... -
Isolation, purification and characterisation of antiproliferative phytochemicals from Dolichos kilimandscharicus (Fabaceae)
(2017-11)Plants are a source of over a quarter of the prescription drugs currently in use worldwide. Coupled with human perception that they provide a safe disease treatment regime, plant derived compounds have become the mainstay ... -
Synthesis and modification of Zeolites for the removal of heavy metals from water
(2017-11-14)Zеolitеs wеrе synthеsisеd using thе hydrothеrmal synthеsis mеthod. Thе synthеsisеd zеolitеs wеrе initially activatеd with sodium chloridе and latеr functionalisеd using barium (barium sulphatе) and coppеr (coppеr sulphatе). ... -
Knowledge management system generic models and architectures: Enhancing uniformity and interoperability of knowledge management systems
(2017-11-16)Despite Knowledge Management becoming important in creating a competitive advantage for organizations, the use of technology in the area has been haphazard partly due to a scarcity of technological models and architectures. ... -
Isolation of norgestrel in contraceptive tablets for use as an analytical standard in its quantification in the aquatic environment
(2017-11-16)Steroidal hormones, natural and synthetic, have become a global concern due to the serious effects they pose to the aquatic environment. Although these hormones are found in low dosage levels in contraceptives, it is the ... -
The Gutman Index and the Edge-Wiener Index of Graphs with given Vertex-Connectivity
(University of Zielona Góra, 2015-12-30)The Gutman index and the edge-Wiener index have been extensively investigated particularly in the last decade. An important stream of re- search on graph indices is to bound indices in terms of the order and other parameters ... -
Agromizid Leafminer infestation of different tomato (Lycopersicon lycopersicum) varieties and an assessment of the effectiveness of Azadirachta indica extracts as a management technique.
(2017-11-17)The relative susceptibilities of 14 tomato varieties (“Rodade”, “Nemonetta”, “Rio Grande”, “Season Red”, “Little Wonder”, “Money Maker”, “RVF”, “Cal-J”, “RVFN”, “Star 9065”, “Floradade”, “Rodade Plus”, “Heinz 1370” and ...
