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Now showing items 24760-24779 of 35397
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Oxidative copolymerization of p-phenylenediamine and 3-aminobenzenesulfonic acid
(Elsevier, 2016)The sulfonation of poly(p-phenylenediamine) (P(pPD)) was achieved by oxidative copolymerization of p-phenylenediamine (pPD) and 3-aminobenzenesulfonic acid (3ABSA) monomers using ammonium persulfate ((NH4)2S2O8). The yield, ... -
Oxidative status in rats exposed to social isolation rearing : behavioral pharmacology studies and relevance for schizophrenia
(North-West University, 2009)PURPOSE: Psychotic (positive) symptoms are the most distinctive feature of schizophrenia, although negative symptoms such as emotional flattening, social withdrawal and cognitive disturbances are the most treatment resistant ... -
Oxidative Stress & Hypertension: A Balancing Act / Carina Mels
(North-West University (South Africa). Potchefstroom Campus, 2021)What is balance? As a noun balance is “an even distribution of weight enabling someone or something to remain upright and steady” or “a situation in which different elements are equal or in the correct proportions.” That ... -
Oxidative stress and angiogenesis in Africans and Caucasians: the SAfrEIC study
(North-West University, 2012)Motivation and aim - The prevalence of hypertension is higher in Africans compared to Caucasians. African Americans also show higher levels of oxidative stress. However, literature regarding levels of oxidative stress and ... -
Oxidative stress and respiratory symptoms due to human exposure to polycyclic aromatic hydrocarbons (PAHs) in Kumasi, Ghana
(Elsevier, 2017)Studies of polycyclic aromatic hydrocarbons (PAHs) and its metabolites in PM10, soils, rat livers and cattle urine in Kumasi, Ghana, revealed high concentrations and cancer potency. In addition, WHO and IARC have reported ... -
Oxidative stress biomarkers in the Mediterranean pond turtle (Mauremys leprosa) reveal contrasted aquatic environments in Southern France
(Elsevier, 2017)Increasing anthropogenic activities, like agricultural practices, constitute the main causes of the loss of water quality and disruption of freshwater ecosystems. High concentrations of pesticides, as shown under experimental ... -
Oxidative stress biomarkers in West African Dwarf goats reared under intensive and semi-intensive production systems
(South African Society for Animal Science (SASAS), 2017)This study explored the variation in physiological oxidative status of West African Dwarf (WAD) goats as the rainy season progressed in a humid climate in south-west Nigeria. A total of 24 growing WAD bucks, averaging 10.5 ... -
Oxidative stress induced by glyphosate-based herbicide on freshwater turtles
(SETAC, 2017)Freshwater ecosystems face very strong anthropogenic pressures, among which overexploitation, habitat degradation, flow modification, species invasion, and water pollution lead to growing threats on biodiversity. Urbanization ... -
The oxidative stress profile and its relation to vascular function in a bi-ethnic cohort: the SABPA study
(Karger, 2019)Oxidative stress and inflammation has been implicated in arterial stiffness, and hypertension development. Oxidative stress may interfere with normal vascular function by inactivation of NO and/or the production of ... -
OXPHOS gene expression and control in mitochondrial disorders
(Elsevier, 2009)The cellular consequences of deficiencies of the mitochondrial OXPHOS system include a variety of direct and secondary changes in metabolite homeostasis, such as ROS, Ca2+, ADP/ATP, and NAD/NADH. The adaptive responses to ... -
Oxygen consumption rate of Caenorhabditis elegans as a high-throughput endpoint of toxicity testing using the Seahorse XFe96 Extracellular Flux Analyze
(Nature Research, 2020)Caenorhabditis elegans presents functioning, biologically relevant phenotypes and is frequently used as a bioindicator of toxicity. However, most C. elegans in vivo effect-assessment methods are laborious and time consuming. ... -
The oxygen consumption rate of three lepidopteran maize pest species measured by a Clark polarographic oxygen electrode using an air-to-water respirometer chamber of novel design - short communication
(ESSA, 2018)In the past, traditional oxygen consumption mea - surements on air-breathers have been made by means of chemical (Winkler titration) (Winkler 1888), physical (Cartesian divers) (Howard et al . 1965) ... -
Ozone autohaemotherapy protects against Ketamine hydrochloride® induced liver and muscle damage in baboons
(North-West University, 2007)Ozone therapy has been used as a form of alternative medicine but has encountered scepticism by orthodox medicine concerning its effectiveness and toxicity. We assessed the acute and chronic effect of O3 autohaemotherapy ... -
Ozone concentration dependant autohaemotherapy effects on baboon antioxidant capacity and DNA integrity and repair capacity of lymphocytes
(Academic Journals, 2009)Although ozone is widely used as an alternative medicine, its safety and efficiency are met with scepticism. To shed some light on this, we assessed the effect of ozone-autohaemotherapy, using an O2/O3 gas mixture ... -
Ozone concentrations and their potential impacts on Vegetation in Southern Africa
(Elsevier, 2013)The tropospheric ozone concentrations over southern Africa are relatively high due to large precursor emissions from biomass burning, vegetation and anthropogenic sources and the intensity of solar radiation. In this study, ... -
Ozone exposure of Flinders Sensitive Line rats is a rodent translational model of neurobiological oxidative stress with relevance for depression and antidepressant response
(Springer, 2015)Rationale Major depression has been associated with higher levels of air pollution that in turn leads to neurodegeneration via increased oxidative stress. There is a need for suitable translational animal models to study ... -
Ozone modulates the effects of imipramine on immobility in the forced swim test, and nonspecific parameters of hippocampal oxidative stress in the rat
(Springer, 2010)Depression has been associated with oxidative stress. There is increased awareness of the role of environmental toxins in the development of mood disorders. Ozone, a pro-oxidant and environmental pollutant, has been noted ... -
Ozone treatment of chromium waste materials
(North-West University, 2011)Ozonation, or advanced oxidation processes (utilising ozone decomposition products as oxidants) are widely used in industrial waste water and drinking water treatment plants. In these applications the use of ozone is based ... -
Paarassessering teenoor individuele assessering in rekenaarprogrammering
(North-West University, 2008)During the past few years, pair-programming is a programming technique that has received an increasing amount of attention in the teaching of computer programming skills. Pair programming can briefly be described as a ...