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Now showing items 2686-2705 of 7883
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First ground-based observations of sprites over southern Africa
(Academy of Science of South Africa, 2018)Sprites are the optical signatures of electrical discharges in the mesosphere triggered by large lightning strikes associated with thunderstorms. Since their discovery in the late 1980s, sprites have been observed ... -
First HETDEX Spectroscopic Determinations of Lyα and UV Luminosity Functions at z=2–3: Bridging a Gap between Faint AGNs and Bright Galaxies
(The Astrophysical Journal, 2021)We present Lyα and ultraviolet (UV)-continuum luminosity functions (LFs) of galaxies and active galactic nuclei (AGNs) at z = 2.0–3.5 determined by the untargeted optical spectroscopic survey of the Hobby–Eberly Telescope ... -
First observation of the coexistence of multiple chiral doublet bands and pseudospin doublet bands in the A ≈ 80 mass region
(Elsevier, 2022)Two nearly degenerate positive-parity bands with the π g2 9/2 ⊗ ν g−1 9/2 configuration and three nearly degenerate negative-parity bands with the π g9/2(p3/2, f5/2) ⊗ ν g−1 9/2 configuration have been identified in ... -
First Observations of E-Region Near Range Echoes Partially Modulated by F-Region Traveling Ionospheric Disturbances Observed by the Same SuperDARN HF Radar
(Journal of Geophysical Research: Space Physics, 2022)We present the first observations from SuperDARN HF radar data of E-region Near Range Echoes (NREs) whose amplitudes are partially modulated by Medium-Scale Traveling Ionospheric Disturbances (MSTIDs) propagating in the ... -
First Observations of E‐Region Near Range Echoes Partially Modulated by F‐Region Traveling Ionospheric Disturbances Observed by the Same SuperDARN HF Radar
(American Geophysical Union, 2022)We present the first observations from SuperDARN HF radar data of E‐region Near Range Echoes (NREs) whose amplitudes are partially modulated by Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) propagating in the ... -
First reading of the draft optional protocol to the International Covenant on Economic, Social and Cultural Rights
(ESR Review : Economic and Social Rights in South Africa, 2007)In an earlier article in the ESR Review (Chenwi & Mbazira, 2006) we indicated that governments were about to decide on whether to proceed with the drafting of an optional protocol to the International Covenant on Economic, ... -
First reading of the draft optional protocol to the International Covenant on Economic, Social and Cultural Rights : international development
(ESR Review : Economic and Social Rights in South Africa, 2007)In an earlier article in the ESR Review (Chenwi & Mbazira, 2006) we indicated that governments were about to decide on whether to proceed with the drafting of an optional protocol to the International Covenant on Economic, ... -
First record of epizootic ulcerative syndrome from the Upper Congo catchment: an outbreak in the Bangweulu swamps, Zambia
(Wiley, 2017)We report on the first outbreak of epizootic ulcerative syndrome (EUS) amongst wild fish populations in the Bangweulu swamps, an inland delta, in the north of Zambia during 2014. The area supports a large and diverse ... -
First record of the water mold achlya bisexualis (saprolegniaceae) isolated from ornamental fish in south africa
(American fisheries society, 2019)The order Saprolegniales (Class Oomycota) is a group of fungus-like eukaryotic microorganisms that have been associated with infections in fish and fish eggs. Infections with microorganisms from this order are clearly ... -
First report of Sporolithon ptychoides (Sporolithales, Corallinophycidae, Rhodophyta) for the Atlantic Ocean
(Wiley-Blackwell, 2011)Samples corresponding to Sporolithon ptychoides Heydrich were collected in the mesophotic zone (50 m depth) south of Espírito Santo State, Brazil. The collected material presented features characteristic of the species ... -
First report of the melobesioid alga (Corallinales, Rhodophyta) Mesophyllum incisum (Foslie) Adey in South Africa
(Elsevier, 1997)Mesophyllum incisum is reported and studied for the first time in South Africa. It has a th all us surface (SEM) with Leptophyturn-type epithallial cells. TetraJbisporangial conceptacles are mound-like and lack a peripheral ... -
The first thousand days within the Western Cape whole of society approach: Lessons for the collaborative governance of intersectoral action for health
(Researchgate, 2020-11)This report is a case study of the Western Cape’s Whole of Society Approach (WoSA) through the lens of the First Thousand Days (FTD) of childhood initiative, focusing in particular on its implementation in Saldanha Bay ... -
The first year experience of part-time students in a South African university: exploring student support linkages between First year orientation programmes and after hours support services
(Division for lifelong learning, 2009)The paper argues that once-off and stand-alone orientation programmes offered usually at the beginning of the first year have limited effect if they are not part of a broader array of support systems available to students ... -
First year learner nurses' perceptions of learning motivation in self-directed learning in a simulated skills laboratory at a higher education institution
(2014)Employing self-directed learning (SDL) methodologies, that are associated with improvement in the affective and psychomotor domains, could be advantageous to learner nurses. Despite the efforts to expose students to SDL ... -
First year students’ experience of access and engagement at a University of Technology
(Bioinfo Publications, 2017)Universities in South Africa have opened access to a diverse population of students, which has resulted in an increased participation of first-generation, low-income and mature students. Concomitant to the widening access, ... -
First-principles investigation of W[sbnd]V and W[sbnd]Mo alloys as potential plasma facing materials (PFMs) for nuclear application
(Elsevier, 2021)Density-functional theory (DFT) based first-principles calculations were used to investigate the crystal structure, binding energy, phase stability and elastic properties of body-centered cubic (BCC) W-based binary solid ... -
Fisheries crime, human rights and small-scalefisheries in South Africa: Acase of biggerfish to fry
(Elsevier, 2019)Marinefisheries plays an important role in ensuring food security and providing livelihoods in South Africa, as inmany other developing coastal States. Transnationalfisheries crime seriously undermines these goals. Drawingon ... -
A fit-for-purpose nutrient profiling model to underpin food and nutrition policies in South Africa
(MPDI, 2021)South Africa (SA) is facing a rising prevalence of obesity and diet-related chronic diseases. The government is seeking to develop effective, evidence-based policy measures to address this. A well-designed, fit-for-purpose ... -
A fitted numerical method for a model arising in HIV-related cancer-immune system dynamics
(Tianjin Polytechnic University, 2019)The effect of diseases such as cancer and HIV among our societies is evident. Thus, from the mathematical point of view many models has been developed with the aim to contribute towards understanding the dynamics of ... -
A fitted numerical method for parabolic turning point singularly perturbed problems with an interior layer
(Wiley, 2019)The objective of this paper is to construct and analyzea fitted operator finite difference method (FOFDM) forthe family of time-dependent singularly perturbed parabolicconvection–diffusion problems. The solution to the ...