Browsing Faculty of Natural Sciences by Title
Now showing items 303-322 of 2567
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Chemical Vapor Deposited Mixed Metal Halide Perovskite Thin Films
(Materials, 2021)In this article, we used a two-step chemical vapor deposition (CVD) method to synthesize methylammonium lead-tin triiodide perovskite films, MAPb1−xSnxI3, with x varying from 0 to 1. We successfully controlled the concentration ... -
Chemical, mineralogical and morphological changes in weathered coal fly ash: A case study of a brine impacted wet ash dump
(Elsevier, 2013)The mobility of species in coal fly ash (FA), co-disposed with brine using a wet ash handling system, from a coal fired power generating utility has been investigated. The study was conducted in order to establish if the ... -
Cheminformatic Characterization of Natural Antimicrob al Products for the Development of New Lead Compounds
(MDPI, 2021)The growing antimicrobial resistance (AMR) of pathogenic organisms to currently pre- scribed drugs has resulted in the failure to treat various infections caused by these superbugs. Therefore, to keep pace with the ... -
Child mortality rate in Ethiopia
(Tehran University of Medical Sciences, 2012)Ethiopia’s childhood mortality has continued to decline although at a swift pace. The drop in urban childhood mortality decline, duration of breastfeeding is the principle reason for the overall decline in mortality trends ... -
Chirality and octupole correlations in As-74
(Physical Review C, 2022)High-spin states in 74As were studied using the 74Ge(4He, 1p3n) reaction at beam energies of 58.6 and 62.6 MeV. Two positive- and one negative-parity bands have been identified in 74As. The two positive-parity bands ... -
Chitosan-coated liposomes of Carissa spinarum extract: synthesis, analysis and antipneumococcal potency
(ICE Publishing, 2023)In the present study, a chitosan-coatedCarissa spinarum-polyphenol-loaded liposome (LipCsP-chitosan) nanocarrierwas fabricated for the delivery ofC. spinarumpolyphenols (CsPs) to improve the bioavailability ... -
Chitosan/PEO nanofibers electrospun on metallized track-etched membranes: fabrication and characterization
(Elsevier, 2021)The development of next-generation adsorption, separation, and filtration materials is growing with an increased research focus on polymer composites. In this study, a novel blend of chitosan (CS) and polyethylene oxide ... -
Chlorine oxidation of VOCs at a semi-rural site in Beijing: significant chlorine liberation from ClNO2 and subsequent gas- and particle-phase Cl–VOC production
(European Geosciences Union (EGU), 2018)Nitryl chloride (ClNO2) accumulation at night acts as a significant reservoir for active chlorine and impacts the following day’s photochemistry when the chlorine atom is liberated at sunrise. Here, we report simultaneous ... -
Chromista
(Wiley Online, 2011)The concept of chromists, at its most expansive, includes the heterokonts (stramenopiles), alveolates, rhizarians, heliozoans, telonemians, haptophytes and cryptophytes. There is mounting evidence that this grouping is not ... -
The chromista
(Wiley Online, 2003)As a group, the chromists show a diverse range of forms from tiny unicellular, flagellates to the large brown algae known as kelp. Molecular studies have confirmed the inclusion of certain organisms once considered Fungi, ... -
Chromosomal-level assembly of the Asian seabass genome using long sequence reads and multi-layered scaffolding
(Public Library of Science, 2016)We report here the ~670 Mb genome assembly of the Asian seabass (Lates calcarifer), a tropical marine teleost. We used long-read sequencing augmented by transcriptomics, optical and genetic mapping along with shared ... -
Chronocoulometric quantum dot aptasensor for sarscov-2 nucleocapsid protein biomarker
(John Wiley and Sons Inc, 2024)For the first time, a novel mercaptosuccinic acid-capped tungsten telluride quantum dot (MSA-WTe3-QD)-based electrochemical aptasensor was designed for the determination of SARS-CoV-2 N-protein in synthetic human serum, ... -
The circumgalactic medium from the camels simulations: Forecasting constraints on feedback processes from future Sunyaev–Zeldovich observations
(IOP Publishing, 2022)It is important to understand the cycle of baryons through the circumgalactic medium (CGM) in the context of galaxy formation and evolution. In this study, we forecast constraints on the feedback processes heating the ... -
Classifying galaxies according to their H I content
(Oxford University Press, 2020)We use machine learning to classify galaxies according to their H I content, based on both their optical photometry and environmental properties. The data used for our analyses are the outputs in the range z = 0–1 from ... -
Clathromorphum tubiforme sp. nov. (Rhodophyta, Corallinaceae) in South Africa with Comments on Generic Characters
(Walter de Gruyter, 1995)A nongeniculate, crustose coralline alga (Rhodophyta, Corallinaceae) from South Africa, is found growing epiphytically on fronds of species of the geniculate genus Ampiroa. Analysis of the vegetative and reproductive ... -
Cleaning foregrounds from single-dish 21 cm intensity maps with Kernel principal component analysis
(Oxford University Press, 2021)he high dynamic range between contaminating foreground emission and the fluctuating 21 cm brightness temperature field is one of the most problematic characteristics of 21 cm intensity mapping data. While these components ... -
Climate change and its influence on the Karst groundwater recharge in the Jinci Spring Region, Northern China
(MDPI, 2017)Due to climate change and human activities over the last fifty years, the spring flow volume of karst groundwater has sharply diminished in China. Climate change is one of the critical factors that initiates a series of ... -
Climate change in coastal waters: Time series properties affecting trend estimation
(AMS, 2016)In South Africa, 129 in situ temperature time series of up to 43 years are used for investigations of the thermal characteristics of coastal seawater. They are collected with handheld thermometers or underwater temperature ... -
Climatic and topographic changes since the Miocene influenced the diversification and biogeography of the tent tortoise (Psammobates tentorius) species complex in Southern Africa
(BMC, 2020)Background: Climatic and topographic changes function as key drivers in shaping genetic structure and cladogenic radiation in many organisms. Southern Africa has an exceptionally diverse tortoise fauna, harbouring one-third ... -
Cloning, expression and characterization of thermostable YdaP from Bacillus licheniformis 9A
(Acta Biochimica Polonica, 2017)The Bacillus licheniformis ydaP gene encodes for a pyruvate oxidase that catalyses the oxidative decarboxylation of pyruvate to acetate and CO2. The YdaP form of this enzyme was purified about 48.6-folds to homogeneity in ...