Now showing items 1-20 of 381
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3b-Taraxerol from Bridelia micrantha
(2009-02-13)Isolation of the title compound, C30H50O, from Bridelia micrantha yielded suitable crystals for an X-ray structure determination, showing it to be in the -form. The crystal packing is determined by infinite zigzag O—H ... -
Absorption of Microwaves in Low Intensity Eucalyptus Litter Fire
(Scientific Research Publishing Inc., http://www.scirp.org, 2015)A fuel bed was constructed where various vegetation species could be used as combustion fuel. The fuel bed was equipped with a thermocouple to measure fire temperature and a two-port automatic network analyser to measure ... -
Advances in the use of biocontrol applications in preharvest and postharvest environments: a food safety milestone
(John Wiley & Sons, Inc., https://onlinelibrary.wiley.com/journal/17454565, 2022-04)Increasing concerns toward food safety and public health have rendered the use of synthetic chemicals in agricultural environments unacceptable. A shift toward biologically safe approaches has been considered a preferred ... -
Aeromagnetic and Landsat TM structural interpretation for identifying regional groundwater exploration targets, south-central Zimbabwe Craton
(Elsevier Science Ltd. www.elsevier.com/locate/jappgeo, 2008)Aeromagnetic (AM) and Landsat Thematic Mapper (TM) data from the south-central Zimbabwe Craton have been processed for the purpose of regional structural mapping and thereby to develop strategic models for groundwater ... -
Ages of detrital zircon grains from Neoproterozoic siliciclastic rocks in the Shakawe area: implications for the evolution of Proterozoic crust in northern Botswana
(Geological Society of South Africa. http://sajg.geoscienceworld.org/, 2000-06)The Precambrian rocks of northern Botswana comprise poorly exposed igneous complexes, high-grade metamorphic rocks, as well as sedimentary sequences including mainly siliciclastic and carbonate rocks. New U-Pb SHRIMP data ... -
Analysis of genetic diversity of Cercospora beticola isolates from Swiss chard in Southern Botswana
(Allied Journals, https://www.ijbio.com/, 2018)Cercospora Leaf Spot (CLS) of Swiss chard (Beta vulgaris L. var. cicla) remains an important foliar disease worldwide, yet the causative agent Cercospora beticola genetic variability remains incompletely understood in ... -
Analysis of persistence soil nutrient statusin abandoned cattle kraals in a semi arid area of Botswana
(Academic Journals, http://www.academicjournals.org, 2011-12-04)The aim of this study was to analyze the depletion of soil nutrients with time on abandoned kraals in a peri-urban area of Botswana. Active kraals are enriched with nutrients through the accumulation of animal droppings ... -
Analysis of rainfall and temperature time series to detect long-term climatic trends and variability over semi-arid Botswana
(Indian Academy of Sciences, https://www.ias.ac.in/Journals/Journal_of_Earth_System_Science/, 2018-03)Arid and semi-arid environments have been identified with locations prone to impacts of climate variability and change. Investigating long-term trends is one way of tracing climate change impacts. This study investigates ... -
Analysis of temperature data over semi-arid Botswana: trends and break points
(Springer Nature Switzerland AG. Part of Springer Nature., https://www.springer.com/journal/703, 2018)Climate change is a global challenge which impacts negatively on sustainable rural livelihoods, public health and economic development, more especially for communities in Southern Africa. Assessment of indices that signify ... -
Analysis of the effects of kraal manure accumulation on soil nutrient status through time
(Academic Journals, 2010-11)This study investigated the influence of the accumulation of animal wastes on the soils of active kraal sites through time. This investigation involved the sampling and analysis of the soils of kraals that had been in use ... -
Analysis of volatile compounds in Khadi (an unrecorded alcohol beverage) from Botswana by Gas Chromatography-Flame Ionization Detection (GC-FID)
(Sabinet;https://journals.co.za/, 2014)Chemical analysis of volatile compounds from khadi, an unrecorded alcoholic beverage from Botswana, was carried out using gas chromatography-flame ionization detection (GC–FID). Ten samples of khadi from two different ... -
Analyzing the load balance of term-based partitioning
(The Science and Information Organization Inc., http://ijacsa.thesai.org/, 2011)In parallel (IR) systems, where a large-scale collection is indexed and searched, the query response time is limited by the time of the slowest node in the system. Thus distributing the load equally across the nodes is ... -
Antibacterial activity of crude extracts and pure compounds isolated from Vernonia galamensis leaves
(Academic Journals, https://academicjournals.org/journal/AJPP, 2018-03-22)The aim of this study was to test the antibacterial property of the extract of the leaves and isolated compounds of Vernonia galamensis that is traditionally claimed to have diverse medicinal use. The disk diffusion method ... -
Antibacterial and antioxidant potential of Albizia anthelmintica as a medicinal plant on pathogenic veterinary isolates
(Academic Journals, https://academicjournals.org/, 2018-11-10)Albizia anthelmintica is a medicinal plant belonging to the Fabaceae family. It is widely used by smallholder farmers and pastoralists to treat internal parasites in their livestock. This study aimed to determine the ... -
Antibacterial and antioxidant potential of Albizia anthelmintica as a medicinal plant on pathogenic veterinary isolates
(Academic Journals, https://academicjournals.org/journal/JMPR, 2018-11-10)Albizia anthelmintica is a medicinal plant belonging to the Fabaceae family. It is widely used by smallholder farmers and pastoralists to treat internal parasites in their livestock. This study aimed to determine the ... -
Antibacterial Diterpenes from the Roots of Ceriops tagal
(Natural Product Inc. http://www.naturalproduct.us/, 2008)Investigation of the roots of Ceriops tagal led to the isolation of a new isopimarane, together with the known diterpenes isopimar-8(14)-en-15,16-diol and erythroxyl-4(17),15(16)-dien-3-one. The structure of the new ... -
Antibiotic activity of selected Botswana Medicinal Plants
(The Botswana Society, http://journals.ub.bw/index.php/bnr/index, 1998)A number of plant extracts from selected Botswana Medicinal Plants were tested against a battery of organisms for antibiotic activity. The antibiotic profile for most of these extracts seems to support their traditional ... -
Antimicrobial activity of the crude extracts and five flavonoids from the twigs of Dorstenia barteri (Moraceae)
(Elsevier Ireland Ltd. http://www.elsevier.com/wps/find/journaldescription.cws_home/506035/description#description, 2008)The aim of this study was to evaluate the antimicrobial activity of the crude extract of the twigs of Dorstenia barteri (DBT) as well as that of four of the five flavonoids isolated from this extract. Gram-positive bacteria ... -
Antimicrobial activity of the extract from the twigs of Dorstenia Elliptica (Moraceae)
(Pharmacologyonline. http://www.pharmacologyonline.org/, 2007)The crude extract from the twigs of Dorstenia elliptica (DET) as well one of the five compounds isolated from this extract namely O-[3-(2, 2-dimethyl-3-oxo-2H-furan-5-yl)-3- hydroxybutyl]bergaptol (5) were tested for ... -
Antimicrobial activity of the methanolic extracts and compounds from Treculia africana and Treculia acuminata (Moraceae)
(Elsevier Ltd. www.elsevier.com/locate/sajb, 2007)The crude methanolic extracts from Treculia africana and Treculia acuminata, three compounds isolated from T. africana and identified as, Phyllocoumarin (1), Catechin (2) and 6, 9-dihydroxy-megastigmane-3-one (3), four ...