Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 841-860 of 4825
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Constraints on particle acceleration in SS433/W50 from MAGIC and H.E.S.S. observations
(EDP Sciences, 2018)Context. The large jet kinetic power and non-thermal processes occurring in the microquasar SS 433 make this source a good candidate for a very high-energy (VHE) gamma-ray emitter. Gamma-ray fluxes above the sensitivity ... -
Constraints on the emission geometries and spin evolution of gamma-ray millisecond pulsars
(IOP Publishing, 2014)Millisecond pulsars (MSPs) are a growing class of gamma-ray emitters. Pulsed gamma-ray signals have been detected from more than 40 MSPs with the Fermi Large Area Telescope (LAT). The wider radio beams and more compact ... -
Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE γ-ray observations with H.E.S.S.
(EDP Sciences, 2019)The flat spectrum radio quasar 3C 279 is known to exhibit pronounced variability in the high-energy (100 MeV < E < 100 GeV) γ-ray band, which is continuously monitored with Fermi-LAT. During two periods of high activity ... -
Constraints on the gamma-ray emission from the cluster-scale AGN outburst in the hydra A galaxy cluster
(EDP Sciences, 2012)Context. In some galaxy clusters, powerful active galactic nuclei (AGN) have blown bubbles with cluster scale extent into the ambient medium. The main pressure support of these bubbles is not known to date, but cosmic rays ... -
Constraints on the lepton content of PWN from the local CR positron spectrum
(ICRC, 2008)Geminga is a nearby pulsar with an age of 3.42×105 yr and a spindown power of 3.2×1034 erg/s at present. B0656+14 has comparable spindown power, with an age of 1.11×105 yr and a distance of 290 pc. The winds of these ... -
Constraints on the multi-TeV particle population in the Coma galaxy cluster with HESS observations
(EDP Sciences, 2009)Aims. Galaxy clusters are key targets in the search for ultra high energy particle accelerators. The Coma cluster represents one of the best candidates for such a search owing to its high mass, proximity, and the established ... -
Constraints to adoption of improved hatchery management practices among catfish farmers in Lagos State
(JCEA, 2017)Aquaculture has shown capacities to serve as means of livelihood, improve living standards, provide employment and generate foreign exchange in many countries. Recent investment in Nigerian aquaculture has been target ... -
Constructing an XML database of linguistics data
(2010)A language-oriented, multi-dimensional database of the linguistic charactersitics of the Hebrew text of the Old Testament can enable researchers to do ad hoc queries. XML is a suitable technology to transform free text ... -
Constructing characters of Sylow p-subgroups of finite Chevalley groups
(Elsevier, 2016)Let q be a power of a prime p, let Gbe a finite Chevalley group over Fqand let Ube a Sylow p-subgroup ofG; we assume that pis not a very bad prime forG. We explain a procedure of reduction of irreducible complex characters ... -
Constructing identities in an online forum of a South African university
(Taylor & Francis / Unisa Press, 2015)The researchers construct the identity of participants by analysing online and offline identity performances in a virtual forum of a higher education institution in South Africa. The study identifies several interactional ... -
Construction and minimality of coordinated linear systems
(Elsevier, 2014)Coordinated linear systems are a particular class of hierarchical systems with a top-to-bottom information structure, consisting of a coordinator system and two or more subsystems. This paper deals with the construction ... -
Consumer's preference between farmed catfish and wild catfish in Swali, Yenagoa local government area of Bayelsa state, Niger delta
(IJEES, 2020)The purpose of this study is to find out consumers preference between farmed catfish and wild catfish in Swali inYenegoa, Bayelsa State. Questionnaire was designed with both opened and closed ended questions and ... -
Consumers' knowledge of textile label information: an exploratory investigation
(Wiley, 2014)Textile label information facilitates consumers' pre- and post-purchase decisions. Because consumers' knowledge regarding this information is relatively unexplored in a South African context, it was the focus of this ... -
Consumers' opinions and use of food labels: results from an urban − rural hybrid area in South Africa
(Elsevier, 2014)Food labels are often an important source of information available to guide consumers' in-store purchases. This study aimed to determine consumers' opinions about and use of food labels and the association between these ... -
Consumers' opinions and use of food labels: Results from an urban − rural hybrid area in South Africa
(Elsevier, 2014)Food labels are often an important source of information available to guide consumers' in-store purchases. This study aimed to determine consumers' opinions about and use of food labels and the association between these ... -
Consumers' prepurchase satisfaction with the attributes and information of food labels
(Wiley, 2016)This study aimed to describe consumers’ retrospective satisfaction with food labels within the expectancy (dis)confirmation paradigm and to investigate the likelihood of food labels influencing consumers’ product choices. ... -
Consumers' understanding and use of textile eco-labels during pre-purchase decision making
(SAAFECS, 2016)Eko-etikette het 'n groot impak op die waarskynlikheid dat verbruikers omgewingsvriendelike produkte sal koop en dit is 'n hulpmiddel om beter ingeligte aankoopbesluite gedurende hulle besluitnemingsproses te neem. Die ... -
Consumers’ knowledge about and attitudes towards lucerne (Medicago sativa l.)
(SAAFECS, 2017)Over the past few years, interest has grown about the health benefits of lucerne (alfalfa), however, little is known about consumers’ attitudes towards consuming this forage legume. Therefore, the aim of this study was to ... -
Consumers’ knowledge of food label information: an exploratory investigation in Potchefstroom, South Africa
(Cambridge University Press, 2012)Objective To determine the ability of consumers to: locate and manipulate food label information; assess the accuracy of nutrient content claims and which health/nutrient claims are allowed; and identify symbols on food ... -
Consumers’ preferences for private and national brand food products
(Wiley, 2012)Consumers' choice of private brands reflects distinct differences in terms of product categories, and indications are that demographic and psychographic factors are also influential in terms of the sales of private vs. ...