Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1841-1860 of 4825
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Fluoroquinolone prescribing patterns in the private healthcare sector of South Africa, 2005-2012
(College of Pharmacists of Buenos Aires Province, Argentina, 2015)Increased prescribing of fluoroquinolones leading to resistance is an issue of concern at present globally. The present study was designed to investigate prescribing patterns for fluoroquinolones in a section of the South ... -
Flux upper limits for 47 AGN observed with H.E.S.S. in 2004-2011
(EDP Sciences, 2014)Context. About 40% of the observation time of the High Energy Stereoscopic System (H.E.S.S.) is dedicated to studying active galactic nuclei (AGN), with the aim of increasing the sample of known extragalactic very-high-energy ... -
Folding mechanisms steer the amyloid fibril formation propensity of highly homologous proteins
(RSC, 2018)Significant advances in the understanding of themolecular determinants of fibrillogenesis can be expected from comparative studies of the aggregation propensities of proteins with highly homologous structures but ... -
Folk taxonomy and indigenous names for frogs in Zululand, South Africa
(BMC, 2019)Background We use taxonomy to organize the world into recognizable units. Folk taxonomy deals with the naming and classification of organisms through culture. Unlike its scientific counterpart, folk taxonomy is mostly ... -
Food antioxidant capacity and its use in food selection
(MedPharm Publications, 2009)In the current issue of the Journal, Louwrens and co-workers determine the per capita South African daily dietary total antioxidant capacity (TAC)1 using published data by Nel and Steyn (2002) which summarises the food ... -
Food utilization, nutrition, health and farming households income: a critical review of literature
(Kamla-Raj, 2016)Farming households' nutrition, health and income are important for rural/agricultural development and poverty alleviation. This article addresses the basic research question, how does nutritional status influence the general ... -
For better, for worse: manatee-associated Tursiocola (Bacillariophyta) remain faithful to their host
(Wiley, 2020)Abstract With the advent of more comprehensive research into the microbiome and interactions between animals and their microbiota, new solutions can be applied to address conservation challenges such as husbandry and ... -
Foraging at wastewater treatment works affects brown adipose tissue fatty acid profiles in banana bats
(Company of Biologists, 2016)In this study we tested the hypothesis that the decrease in habitat quality at wastewater treatment works (WWTW), such as limited prey diversity and exposure to the toxic cocktail of pollutants, affect fatty acid profiles ... -
Forb community responses to an extensive drought in two contrasting land-use types of a semi-arid Lowveld savanna
(Taylor & Francis, 2019)Projected increases in the frequency and severity of drought events are expected to impose changes in the ecology of native forb communities in semi-arid ecosystems. We examined the state of forb communities during, ... -
Forb ecology research in dry African savannas: knowledge, gaps, and future perspectives
(Wiley, 2019)Savannas are commonly described as a vegetation type with a grass layer interspersed with a discontinuous tree or shrub layer. On the contrary, forbs, a plant life form that can include any nongraminoid herbaceous vascular ... -
Forbush decreases and geomagnetic storms during a highly disturbed solar and interplanetary period, 4-10 September 2017
(AGU, 2019)Features and peculiarities of the cosmic ray intensity (CRI) and the geomagnetic activity, along with several solar plasma and interplanetary magnetic field, during the period 4–10 September 2017 are studied. The period ... -
Forecasting the South African business cycle using Fourier Analysis
(Clute Institute, 2016)A Fourier transform analysis is proposed to determine the duration of the South African business cycle, measured using log changes in nominal gross domestic product (GDP). The most prominent cycle (two smaller, but ... -
Foreword. African journal of aquatic science.
(Taylor & Francis, 2020) -
Formulation and Optimization of Eudragit RS PO-Tenofovir Nanocarriers Using Box-Behnken Experimental Design
(Hindawi Publishing Corporation, 2015)The objective of present study was to develop an optimized polymeric nanoparticle system for the antiretroviral drug tenofovir. A modified nanoprecipitation method was used to prepare Eudragit RS PO nanoparticles of the ... -
Formulation effects of topical emulsions on transdermal and dermal delivery
(Wiley, 2009)It has been recognized that the vehicle in which a permeant is applied to the skin has a distinctive effect on the dermal and transdermal delivery of active ingredients. The cutaneous and percutaneous absorptions can be ... -
Formylmethylene: the triplet ground state and the lowest singlet state
(American Chemical Society (ACS), 2013)The ground triplet state and lowest singlet state of formylmethylene have been proposed as important intermediates in the Wolff rearrangement of α-diazo ketones into ketenes. The ground triplet state of formylmethylene ... -
Fostering a resilient regional economy in the SADC through regional integration
(Wiley, 2017)Resilience in regional economic growth in the Southern African Development Community (SADC) can potentially be increased through the implementation of a regional policy which emphasizes regional integration. This will ... -
Four new Aceria species (Acari: Trombidiformis: Eriophyidae) on Acacia nilotica from Egypt
(Taylor & Francis, 2015)Four new Aceria species of eriophyoid mites found in Egypt are described and illustrated. They are Aceria aegyptiacacia sp. nov., A. metwallii sp. nov., A. awadi sp. nov. and A. saidi sp. nov. collected from leaf galls ... -
Four weeks of augmented eccentric loading using a novel leg press device improved leg strength in well-trained athletes and professional sprint track cyclists
(Public Library of Science, 2020)This study assessed the efficacy of strength training using augmented eccentric loading to provoke increases in leg strength in well-trained athletes, and sprint track cyclists, using a novel leg press device. Twelve ... -
Fourier inference for stochastic volatility models with heavy-tailed innovations
(Springer, 2018)We consider estimation of stochastic volatility models which are driven by a heavy-tailed innovation distribution. Exploiting the simple structure of the characteristic function of suitably transformed observations we ...