Browsing by Title
Now showing items 3070-3089 of 35418
-
Bio-behavioural evaluation of efavirenz and Δ9-tetrahydrocannabinol alone and in combination in rats with respect to psychosis and anxiety
(North-West University (South-Africa), 2019)The highly active antiretroviral therapy, efavirenz (EFV), has been noted to occur as a constituent of a potent new designer drug cocktail called “Nyaope” or “Whoonga”, which is reported to have mind-altering and addictive-like ... -
A bio-behavioural investigation into the role of the cholinergic system in stress
(North-West University, 2006)Posttraumatic stress disorder (PTSD) is an anxiety disorder that may follow exposure to severe emotional trauma and presents with various symptoms of anxiety, hyperarousal and cognitive anomalies. Interestingly, only ... -
Bio-behavioural studies into the antidepressant and antipsychotic-like effects of Garcinia mangostana Linn extract and alpha-mangostin as adjunctive-or mono-therapy in a rodent model of schizophrenia
(Wiley, 2019)Introduction: Garcinia mangostana Linn (GML) or mangosteen has anti-inflammatory, antioxidant and neuroprotective actions. Its bioactive constituents, α- , β- , and γ- mangostin also inhibit cAMP ... -
Bio-butanol fermentation using clostridium acetobutylicum and clostridium tetanomorphum in modified bioreactor flasks
(ETA-Florence Renewable Energies, 2015)An alternative new generation biofuel to bio-ethanol has attracted researchers to investigate various approaches for optimization of traditional ABE fermentation to enable bio-butanol to be produced cheaper at an industrial ... -
Bio-catalytic upgrading of phenolic components present in waste water of a hydrothermal liquefaction plant
(North-West University (South Africa)., 2021)Vanillyl alcohol oxidase is a flavoenzyme naturally sourced from Penicillium simplicissimum. It is a potential candidate in the commercial production of vanillin, an expensive natural flavourant in the cosmetic, food, ... -
Bio-ecological studies of Tuta absoluta in Sudan
(North-West University (South Africa), 2019)Production of tomato crops in Sudan is threatened by the invasion of Tuta absoluta (Meyrick). This pest develops and disperses rapidly and it is also known to develop resistance to insecticides. Knowledge of its bio-ecology ... -
Bio-ekologiese studies van Amblyseius [A.] Teke Pritchard & Baker, en A. (Mesoseiulus) Longipes (Evans Acarina : Phytoseiidae)
(North-West University (South Africa), 1972)Die aspekte van die bio-ekologie van Arnblyseius (A.) teke Pritchard & Baker en A. (Mesoseiulus) longipes (Evans) wat gedurende hierdie studie ondersoek is, is die volgende: die lengte van die lewenslope van beide ... -
Bio-etiek sonder grense en menswaardigheid: 'n Gereformeerd-etiese beoordeling
(AOSIS, 2013)The Universal Declaration of Bioethics and Human Rights (UDBH) seeks to guide the world community in ethical principles with regard to medicine, life sciences and related technologies. Human dignity as a principle was ... -
Bio-etiek sonder grense: ʼn Verkenning en Christelik-etiese beoordeling van die UNESCO universele deklarasie van bioetiek en menseregte (2005)
(Universiteit van Stellenbosch, 2013)It is clear that the world community realized the need for a Declaration on bio-ethics and human rights. It led to an assignment given by the member states to UNESCO to develop a declaration. During the development of the ... -
Bio-oil and bio-char production from sunflower hulls
(ETA-Florence Renewable Energies, 2011)In this paper, the hydrothermal liquefaction of sunflower hulls into biooil and biochar is presented. The main manipulated variables that were studied were biomass load, catalyst type and temperature. The experimental ... -
Bio-oil production from sweet sorghum bagasse via liquefaction using alkaline solutions and identification of phenolic products
(Springer, 2020)The feasibility of converting biomass into bio-oil and the effect of an alkaline treatment during biomass liquefaction was studied. Sweet sorghum bagasse (SSB) was treated with NaOH concentrations of 0.5, 1.0, 3.0 and 6.0 ... -
Bioaccessibility and risk assessment of essential and non-essential elements in vegetables commonly consumed in Swaziland
(Elsevier, 2017)The green leafy vegetables (Mormodica involucrate, Bidens pilosa and Amaranthus spinosus) are economic; seasonal; locally grown and easily available; easy to propagate and store; highly nutritious food substances that form ... -
Bioaccumulation and bioaccessibility of arsenic and mercury in the common carp (Cyripnus carpio) of the Hex river catchment in rustenburg, south africa
(North-West University (South Africa), 2019)Mining is one of the anthropogenic activities that increase heavy metal contamination in the aquatic environment. Arsenic (As) and Mercury (Hg) are well-known cancer causing agents and they are a major concern all over the ... -
Bioaccumulation and human health risk assessment of DDT and other organochlorine pesticides in an apex aquatic predator from a premier conservation area
(Elsevier, 2016)With the second highest gross domestic product in Africa, South Africa is known to have a high pesticide usage, including the highly persistent and banned group of organochlorine pesticides (OCPs). South Africa is also one ... -
Bioaccumulation and metal-associated biomarker responses in a freshwater mussel, Dreissena polymorpha, following short-term platinum exposure
(Elsevier, 2019)Due to the increasing presence of platinum (Pt) in the environment, the caveat arises to identify its toxic potential in species at risk of being exposed – especially those found in aquatic environments where pollutants ... -
Bioaccumulation and subchronic toxicity of 14 nm gold nanoparticles in rats
(MDPI, 2016)Colloidal suspensions of 14 nm gold nanoparticles (AuNPs) were repeatedly administered intravenously at three dose levels (0.9, 9 and 90 µg) to male Sprague Dawley rats weekly for 7 weeks, followed by a 14-day washout ... -
Bioaccumulation and trophic transfer of total mercury in the subtropical Olifants River Basin, South Africa
(Elsevier, 2019)The present study describes total mercury (THg) levels in surface water, sediment and biota from the Olifants River Basin (ORB) (South Africa) and investigates the trophic transfer of THg by means of trophic magnification ... -
Bioaccumulation of persistent organic pollutants and their trophic transfer through the food web: human health risks to the rural communities reliant on fish from South Africa's largest floodplain
(Elsevier, 2019)The Phongolo River Floodplain (PRF) is South Africa's largest floodplain, unique in being the only large floodplain able to sustain permanent waters throughout the dry season (Kyle, 2002). This highly productive region ... -
Bioactive albumin-based carriers for tumour chemotherapy
(Bentham Science, 2014)Proteins are posed as the natural counterpart of the synthetic polymers for the development of drug delivery systems and few of them, have been regarded safe for drug delivery purposes by the United States Food and Drug ... -
Bioavailability of iron from fortified maize using stable isotope techniques
(North-West University, 2007)Background: The high prevalence of iron deficiency and anaemia among South African children highlights the need for iron fortification, especially with a highly bioavailable iron compound. Fortification of staple foods is ...