Browsing Faculty of Natural Sciences by Title
Now showing items 238-257 of 2567
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Calibrating photometric redshifts with intensity mapping observations
(American Physical Society, 2017)Imaging surveys of galaxies will have a high number density and angular resolution yet a poor redshift precision. Intensity maps of neutral hydrogen (HI) will have accurate redshift resolution yet will not resolve ... -
Calibrating the James Webb Space telescope filters as star formation rate indicators
(American Astronomical Society, 2018)We have calibrated the 6.5m James Webb Space Telescope (JWST) mid-infrared (MIR) filters as star formation rate (SFR) indicators, using JWST photometry synthesized from Spitzer spectra of 49 low-redshift galaxies, which ... -
Calibration of redox potential in sperm wash media and evaluation of oxidation–reduction potential values in various assisted reproductive technology culture media using MiOXSYS system
(Wiley, 2018)Oxidation–reduction potential describes the balance between the oxidants and antioxidants in fluids including semen. Various artificial culture media are used in andrology and IVF laboratories for sperm preparation and to ... -
A calibration report for wireless sensor-based weatherboards
(MDPI, 2015)Sub-Saharan Africa contains the highest number of people affected by droughts. Although this can easily be mitigated through the provision of timely, reliable and relevant weather forecasts, the sparse network of weather ... -
Call capacity for voice over Internet Protocol on wireless mesh networks
(Telkom, 2010)This paper describes work in progress on call capacity optimization for voice over Internet Protocol on wireless mesh networks. In a developing country such as South Africa, evidence has shown that rural inhabitants find ... -
Call for special issue papers: Global public health — contributions of traditional, complementary, and integrative medicine in primary care
(Mary Ann Liebert, 2022)The 2018 Declaration of Astana* issued by the World Health Organization (WHO) and the United Nations Children’s Fund (UNICEF) represents a landmark step for all of primary health care, public health, and traditional co ... -
The CAMELS multifield data set: Learning the universe’s fundamental parameters with artificial intelligence
(IOP, 2022)We present the Cosmology and Astrophysics with Machine Learning Simulations (CAMELS) Multifield Data set (CMD), a collection of hundreds of thousands of 2D maps and 3D grids containing many different properties of cosmic ... -
Can Galaxy Evolution Mimic Cosmic Reionization?
(IOP Publishing, 2021)Lyα emitting galaxies are powerful tools to probe the late stages of cosmic reionization. The observed sudden drop in Lyα fraction at z > 6 is often interpreted as a sign of reionization, since the intergalactic medium ... -
Candida antifungal drug resistance in sub-Saharan African populations: A systematic review
(Science Navigation Group, 2017)BACKGROUND: Candida infections are responsible for increased morbidity and mortality rates in at-risk patients, especially in developing countries where there is limited access to antifungal drugs and a high burden of HIV ... -
Candida species carriage in diabetic patients in Misrata, Libya
(Medpharm Publications, 2017)Background: There is a paucity of studies describing the prevalence and antimicrobial profiles of Candida in Libya. Limited treatment choices in the antifungal armamentarium in public healthcare settings in Africa require ... -
Capacity building for whole genome sequencing of Mycobacterium tuberculosis and bioinformatics in high TB burden countries
(Oxford University Press, 2020)Background Whole-genome sequencing (WGS) is increasingly used for Mycobacterium tuberculosis (Mtb) research. Countries with the highest tuberculosis (TB) burden face important challenges to integrate WGS into surveillance ... -
Capacity to control oxidative stress-induced caspase-like activity determines the level of tolerance to salt stress in two contrasting maize genotypes
(Springer, 2013)The response of two maize (Zea mays L.) genotypes, named GR (salt-tolerant) and SK (salt-sensitive), to salt stress (150 mM NaCl) was investigated under controlled environmental growth conditions. Genotype SK experienced ... -
Capture zone simulation for boreholes located in fractured dykes using the linesink concept
(Water Research Commission, 2002)Delineation of capture zones for groundwater source protection is normally performed by using numerical codes which are based on the porous medium flow equation. However, boreholes are often sited in or along permeable ... -
Carbapenem resistance expressed by Gram-negative bacilli isolated from a cohort of Libyan patients
(BioMed Central, 2016)Background and objectives: Carbapenem-resistant Enterobacteriaceae (CRE) and other Gram-negative bacteria are among the most common pathogens responsible for both community and hospital acquired infection. The global spread ... -
Carbon futures trading and short-term price prediction: An analysis using the fractal market hypothesis and evolutionary computing
(MPDI, 2021)This paper presents trend prediction results based on backtesting of the European Union Emissions Trading Scheme futures market. This is based on the Intercontinental Exchange from 2005 to 2019. An alternative trend ... -
Carbon monoxide alleviates salt-induced oxidative damage in sorghum bicolor by Inducing the expression of proline biosynthesis and antioxidant genes
(Multidisciplinary Digital Publishing Institute (MDPI), 2024)Crop growth and yield are affected by salinity, which causes oxidative damage to plant cells. Plants respond to salinity by maintaining cellular osmotic balance, regulating ion transport, and enhancing the expression of ... -
Carbon stock prediction in managed forest ecosystems using Bayesian and frequentist geostatistical techniques and new generation remote sensing metrics
(MDPI, 2023)The study compares the performance of a hierarchical Bayesian geostatistical methodology with a frequentist geostatistical approach, specifically, Kriging with External Drift (KED), for predicting C stock using prediction ... -
Carbonation of brine impacted fractionated coal fly ash: Implications for CO2 sequestration
(Elsevier, 2011)Coal combustion by-products such as fly ash (FA), brine and CO2 from coal fired power plants have the potential to impact negatively on the environment. FA and brine can contaminate the soil, surface and ground water through ... -
Carbonic anhydrase II based biosensing of carbon dioxide at high temperature: an analytical and MD simulation study
(OMICS International, 2018)Concentration of carbon dioxide (CO2) in the atmosphere has increased significantly due to anthropogenic activities and attributed as a major factor to global warming. Its detection by biosensing methods will provide ... -
Carcinoembryonic antigen immunosensor developed with organoclay nanogold composite film
(ESG, 2014)Organoclay nanogold composite were prepared using gold nanoparticles and the natural Cameroonian clay grafted with amino organosilane. The functionnalization of clay provided abundant amino group to assemble gold nanoparticles. ...