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Now showing items 341-350 of 370
Identification of sources of aerosol particles in three locations in eastern Botswana
(American Geophysical Union, https://agupubs.onlinelibrary.wiley.com/journal/21562202, 2000-07-27)
Airborne particles have been collected using a dichotomous virtual impactor at three different locations in the eastern part of Botswana: Serowe, Selibe‐Phikwe, and Francistown. The particles were separated into two fractions ...
Communication: Remarkable electrophilicity of the oxalic acid monomer: An anion photoelectron spectroscopy and theoretical study
(AIP Publishing LLC., https://aip.scitation.org/journal/jcp, 2014-06-14)
Our experimental and computational results demonstrate an unusual electrophilicity of oxalic acid, the simplest dicarboxylic acid. The monomer is characterized by an adiabatic electron affinity and electron vertical ...
Investigating the applicability of nexus thinking to private protected areas; the case of Mokolodi Nature Reverse, Southeast Botswana
(University of Botswana, www.ub.bw, 2019-09)
World-wide, Community Based Natural Resources Management (CBNRM) has gained international attention for reconciling common pool resource management with needs and aspirations of the local people. Regionally, Zimbabwe’s ...
Isolation and characterization of Lactic Acid Bacteria and indicator microorganisms of food safety from Omaere, a traditionally fermented milk product in Botswana
(University of Botswana, www.ub.bw, 2018)
Botswana has many traditional foods and beverages that are prepared by means of natural/spontaneous fermentation. The traditional preparation of these foods is for the most part largely undocumented and the microorganisms ...
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 ...
Status of air pollution in Botswana and significance to air quality and human health
(Pure Earth (formerly Blacksmith Institute), www.pureearth.org, 2017-09-01)
Background. Air pollution is an important issue in developed and industrialized countries. The most common sources of air pollution are anthropogenic activities such as construction dust, vehicular emissions and mining. ...
A new method of quantifying aerosol concentrations in atmosphere
(Springer Nature Switzerland AG. Part of Springer Nature, https://www.springer.com/journal/703, 2014-04)
Africa is one of the sources of biomass burning emissions. It is estimated that about 6 million tons of fuel per day is consumed in the southern hemisphere. Biomass burning has an important contribution on aerosol particle ...
An empirical relation for vegetation fuel flames breakdown electric field strength
(Scientific Research Publishing Inc., https://www.scirp.org/journal/jemaa/, 2019)
The compulsion to provide reliable electric power for sustenance of socio-economic development is vital for most of southern Africa states. The demand for the resource in the region is anticipated to escalate in the next ...
Nondestructive measurement of momentum transfer collision frequency for low temperature combustion plasma
(Hindawi Publishing Corporation, https://www.hindawi.com/journals/ijap/, 2014)
Accurately measured momentum transfer collision frequency and electron density for fire plasma enable correct simulation of electromagnetic wave propagation in the medium. The simulation is essential for designing ...
Radio wave propagation experiment in sugarcane fire environments
(Scientific Research Publishing Inc., https://www.scirp.org/journal/jemaa/, 2016-07-21)
Large fires have an effect of suppressing Very or Ultra High Frequency (VHF/UHF) radio wave signals strength which consequently impact negatively on the efficiency of radio communications at the frequency ranges. Mobile ...