Browsing Faculty of Natural Sciences by Title
Now showing items 1724-1743 of 2571
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An overview of trace elements in soils of Keana-Awe Brine-Fields, Middle Benue Trough, Nigeria
(Taylor & Francis: STM, Behavioural Science and Public Health Titles, 2017)The objective of this study was to determine the concentration of trace elements in soils of Keana-Awe brine-fields. Composite soil samples were randomly collected at a depth of 0–15 cm and were analysed for molybdenum, ... -
Overweight/obesity and chronic health conditions in older people with intellectual disability in Ireland
(Wiley, 2021)This study examines overweight/obesity and chronic health conditions (CHCs) in older people with intellectual disability (ID).Data for this cross-sectional observational study emanated from Wave 2 of the Intellectual Disability ... -
Oxazinethione derivatives as a precursor to pyrazolone and pyrimidine derivatives: Synthesis, biological activities, molecular modeling, adme, and molecular dynamics studies
(MDPI, 2021)In this study, we used oxazinethione as a perfect precursor to synthesize new pyrimidine and pyrazole derivatives with potent biological activities. Biological activities were determined for all compounds against A. flavus, ... -
Oxidation of benzoin catalyzed by oxovanadium (IV) schiff base complexes
(Chemistry Central, 2013)BACKGROUND: The oxidative transformation of benzoin to benzil has been accomplished by the use of a wide variety of reagents or catalysts and different reaction procedures. The conventional oxidizing agents yielded ... -
Oxidative stress and assisted reproduction: A comprehensive review of its pathophysiological role and strategies for optimizing embryo culture environment
(MDPI, 2022)Oxidative stress (OS) due to an imbalance between reactive oxygen species (ROS) and antioxidants has been established as an important factor that can negatively affect the outcomes of assisted reproductive techniques ... -
Oxidative Stress, Ageing and Methods of Seed Invigoration: An Overview and Perspectives
(MDPI, 2021)The maintenance of seed quality during the long-term conservation of plant genetic resources is crucial for averting the projected food crises that are linked to the changing climate and rising world population. However, ... -
Oxidative stress: A comprehensive review of biochemical, molecular, and genetic aspects in the pathogenesis and management of varicocele
(Korean Society for Sexual Medicine and Andrology, 2021)Sperm vitality testing is a basic semen examination that has been described in the World Health Organization (WHO) Laboratory Manual for the Examination and Processing of Human Semen from its primary edition, 40 years ago. ... -
Ozone and nitric oxide induce cGMP-dependent and independent transcription of defence genes in tobacco
(Wiley, 2009)Here, we analyse the temporal signatures of ozone (O3)-induced hydrogen peroxide (H2O2) and nitric oxide (NO) and the role of the second messenger guanosine 3′,5′-cyclic monophosphate (cGMP) in transcriptional changes ... -
An O−C (and light travel time) method suitable for application to large photometric databases
(Oxford University Press, 2014)The standard method of studying period changes in variable stars is to study the timing residuals or O−C values of light-curve maxima or minima. The advent of photometric surveys for variability, covering large parts of ... -
Palladium-gold nanoalloy surface modified limn2o4 cathode for enhanced li-ion battery
(Hindawi, 2015)Au with Pd nanoparticles were synthesized and coated onto the spinel LiMn2O4 via a coprecipitation calcination method with the objective to improve the microstructure, conductivity, and electrochemical activities of ... -
Palygorskite hybridized carbon nanocomposite as a high-performance electrocatalyst support for formic acid oxidation
(South African Chemical Institute (SACI), 2013)A nanocomposite, in which acid-treated palygorskite was hybridized with carbon, was prepared and designed as an efficient support for electrocatatlysts. Pd nanoparticles were deposited on the hybrid support as an ... -
A Panel of Ancestry Informative Markers for the Complex Five-Way Admixed South African Coloured Population
(PloS, 2013)Admixture is a well known confounder in genetic association studies. If genome-wide data is not available, as would be the case for candidate gene studies, ancestry informative markers (AIMs) are required in order to adjust ... -
Pansharpened landsat 8 thermal-infrared data for improved land surface temperature characterization in a heterogeneous urban landscape
(Elsevier, 2022)Challenges associated with adolescents are prevalent in South African societies. During the adolescence stage, children may become involved in deviant behaviour. Although a significant number of studies have focused on the ... -
The paracrine effect of hypoxic and normoxic cancer secretion on the proliferation of brain endothelial cells (bend.3)
(MDPI, 2022): Background: This study aimed to investigate the disruption of cell cycle phases of bEnd.3 cells exposed to cancer paracrine secretion. Cancer cells have been reported to use the secretion of paracrine factors to ... -
Parental reporting of adverse drug reactions in South Africa: An online survey
(AOSIS, 2021)The high incidence of adverse drug reactions (ADRs) in children is of global concern. Enhancing the reporting of ADRs could contribute to making safer medicines available to children.To assess parents’ awareness of ... -
A participatory design for a billing system: A South African case study of a community based telephony system
(ACM, 2014)This paper describes the role participatory design can play in developing and implementing an information and communication technology for development project in a rural area. It shows how the process of co-designing an ... -
Particle number concentration measurements on public transport in Bangkok, Thailand
(Multidisciplinary Digital Publishing Institute (MDPI), 2023)Traffic is a major source of particulate pollution in large cities, and particulate matter (PM) level in Bangkok often exceeds the World Health Organisation limits. While PM2.5 and PM10 are both measured in Bangkok regularly, ... -
The pathophysiology of rhabdomyolysis in ungulates and rats: towards the development of a rodent model of capture myopathy
(Springer, 2023)Capture myopathy (CM), which is associated with the capture and translocation of wildlife, is a life-threatening condition that causes noteworthy morbidity and mortality in captured animals. Such wildlife deaths have a ... -
Pathways towards coexistence with large carnivores in production systems
(Springer, 2021)Coexistence between livestock grazing and carnivores in rangelands is a major challenge in terms of sustainable agriculture, animal welfare, species conservation and ecosystem function. Many effective non-lethal tools exist ... -
Patient with Kaposi’s Sarcoma: Teaching students medicine management therapy
(Medpharm, 2018)Interprofessional education (IPE) is a cornerstone in advancing health professional education, with the aim of improving the overall quality of healthcare.1 The World Health Organization (WHO) states: “Interprofessional ...