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POSSIBLE SIMPLIFIED RATE MODELS FOR THE STUDY OF THE EMISSION SIGNAL ENHANCEMENT DUE TO EASILY IONIZABLE ELEMENTS DURING FLAME ATOMIC EMISSION (FAES) AND INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROMMETRY (ICP-OES)
(2012-08-02)
The effects of excess Na and K on K and Mg atom line emission during air-acetylene flame atomic spectrometry (FAES), and of excess Li and K on Ca, Mg and Sr atom and ion lines in the inductively coupled plasma (ICP), were ...
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 ...
In Vitro interactionsof plant phenolic compounds and antiparasitic drugs with drug metabolising enzymes and transporters
(2012-07-11)
Drug metabolising enzymes and transporters play a critical role in the pharmacokinetics and hence, absorption, distribution, metabolism, and excretion (ADME) of compounds and medicines. The objective of this thesis was to ...
Characterisation of Cowpea aphid-borne mosaic virus (CABMV) and evaluation of pathogen derived resistance to the virus.
(2012-08-28)
Cowpea is a major source of dietary protein in most African traditional diets, and the crop partially replenishes the soil nitrogen content as a result of its association with nitrogen-fixing Rhizobium spp, and is used as ...
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, ...
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 ...
Accumulation of potentially harmful elements in edible parts of vegetables grown on two different geological substrates in Zimbabwe.
(Elsevier, 2019-09-12)
This study investigated the bioaccumulation of potentially harmful elements (PHEs) in common, locally grown vegetables in Zimbabwean farmlands. The aim of the study was to compare PHE accumulation in vegetables grown on ...
Influence of Brachystegia spiciformis and Parinari curatellifolia on herbaceous flora and soils in Mukuvisi Woodlands, Harare
(2012-08-29)
A comparative study between B. spiciformis and P. curatellifolia’s isolated and clumps of trees’ influence on patterning and structure of herbaceous flora and soils with those of adjacent open grasslands was conducted in ...
A Human Health Risk Assessment of Heavy Metal Bioaccumulation in Nile Tilapia Oreochromis niloticus from Lake Chivero, Zimbabwe
(2013-06-04)
Lake Chivero’s catchment covers the urban areas of Harare and Chitungwiza, which contribute immensely to the pollution of the lake through urban runoff, sediments, sewage effluents, industrial effluents and leachate from ...
Impact of the invasive alien species, LANTANA CAMARA (L). on native vegetation in Northern Gonarezhou National Park, Zimbabwe
(2012-08-29)
This study assessed the impact of Lantana camara invasion on native vegetation in Northern Gonarezhou National Park (GNP), Zimbabwe. Stratified random sampling was used with three categories; uninvaded, moderately invaded ...