Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1758-1777 of 4825
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Fast-and ultra-fast laser pulse induced reactions between carbon dioxide and methane
(Elsevier, 2010)The direct excitation of CO2 using fast (nanosecond) and ultrafast (femtosecond) pulsed lasers was investigated. A gas reaction cell was used to excite CO2 in a 50 : 50 mixture of CO2 and CH4 using nano- and femtosecond ... -
Fatty acid metabolome extraction from mycobacterial cells for GC-MS metabolomics analysis
(Humana, 2019)Metabolomics is becoming an increasingly popular research tool for identifying new biomarkers, which can, among other applications, be applied to elucidate various microbial growth and virulence mechanisms. Since the lipid ... -
Fe(II) and Fe(III) complexes of N-ethyl-N-phenyl dithiocarbamate: electrical conductivity studies and thermal properties
(Elsevier, 2014)The electrical conductivity and thermal properties of Fe complexes in different oxidation states of (II)and (III) have been studied using the compounds Fe (II) bis (N-ethyl-N-phenyl dithiocarbamate), andFe (III) tris ... -
Feasibility of electro-reduction of U(VI) in oxalic acid using an electrolytic CEM-separated cell
(Springer, 2020)The feasibility of electrolytic stripping of U(VI) using an electrolytic separation cell with anode and cathode compartments, separated by a cation exchange membrane (CEM), was investigated as a possible final step in a ... -
The feasibility of raising information security awareness in an academic environment using SNA
(Springer, 2018)The human aspect is one of the key success factors in information security (InfoSec). Its impact on InfoSec is so significant that multiple studies have shown that a balanced approach combining technology and security ... -
The feasibility of wastewater recycling that includes residue from dissolved air flotation within a drinking water treatment plant: case study of Midvaal Water Company, South Africa
(WRC, 2019)When purifying water for potable use, wastewater is generated, due to the class of the water treatment plant and the quality of the source water. Midvaal Water Company recycled wastewater that included residue from the ... -
Feces of feedlot cattle contain a diversity of bacteriophages that lyse non-O157 Shiga toxin-producing Escherichia coli
(Canadian Science Publishing, 2015)This study aimed to isolate and characterize bacteriophages that lyse non-O157 Shiga toxin-producing Escherichia coli (STEC) from cattle feces. Of 37 non-O157 STEC-infecting phages isolated, those targeting O26 (AXO26A, ... -
Femtosecond laser induced breakdown spectroscopy of silver within surrogate high temperature gas reactor fuel coated particles
(Elsevier, 2010)The detection of metallic silver on Chemical Vapour Deposited (CVD) grown silicon carbide and in Pebble Bed Modular Reactor (PBMR) supplied tri-structural isotropic (TRISO) coated particles (with 500 μm diameter zirconium ... -
Fermi detection of a luminous y-ray pulsar in a globular cluster
(AAAS, 2011)We report on the Fermi Large Area Telescope’s detection of γ-ray (>100 mega–electron volts) pulsations from pulsar J1823–3021A in the globular cluster NGC 6624 with high significance (∼7 σ). Its γ-ray luminosity, Lγ = (8.4 ... -
Fermi Large Area Telescope observations of PSR J1836+5925
(IOP Publishing, 2010)The discovery of the γ-ray pulsar PSR J1836+5925, powering the formerly unidentified EGRET source 3EG J1835+5918, was one of the early accomplishments of the Fermi Large Area Telescope (LAT). Sitting 25° off the Galactic ... -
Fermi Large Area Telescope observations of the Vela-X pulsar wind nebula
(IOP Publishing, 2010)We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833–45 using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8° diameter Vela supernova ... -
Fermi LAT discovery of extended gamma-ray emission in the direction of supernova remnant W5IC
(IOP Publishing, 2009)The discovery of bright gamma-ray emission coincident with supernova remnant (SNR) W51C is reported using the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope. W51C is a middle-aged remnant (~104 yr) ... -
Fermi LAT pulsed detection of PSR J0737-3039A in the double pulsar system
(IOP Publishing, 2013)We report the Fermi Large Area Telescope discovery of γ-ray pulsations from the 22.7 ms pulsar A in the double pulsar system J0737−3039A/B. This is the first mildly recycled millisecond pulsar (MSP) detected in the GeV ... -
Fermi-LAT discovery of GeV gamma-ray emission from the young supernova remnant Cassiopeia A.
(IOP Publishing, 2010)We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant (SNR) with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. These observations reveal a source with ... -
Fermi-LAT observations of the Geminga pulsar
(IOP Publishing, 2010)We report on the Fermi-LAT observations of the Geminga pulsar, the second brightest non-variable GeV source in the γ-ray sky and the first example of a radio-quiet γ-ray pulsar. The observations cover one year, from the ... -
Fermi/LAT counterparts of IceCube neutrinos above 100 TeV
(EDP Sciences, 2018)The IceCube Collaboration has published four years of data and the observed neutrino flux is significantly in excess of the expected atmospheric background. Due to the steeply falling atmospheric background spectrum, events ... -
Fermi/LAT obeservations of LS 5039
(IOP Publishing, 2009)The first results from observations of the high-mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent ... -
(Ferrocenylpyrazolyl)nickel(II)-catalysed ethylene oligomerisation
(RSC, 2016)Compounds L1–L6 (3-ferrocenylpyrazole (L1), 3-ferrocenyl-5-methylpyrazole (L2), 3-ferrocenylpyrazolyl-methylenepyridine (L3), 3-ferrocenyl-5-pyrazolyl-methylenepyridine (L4), 3-ferrocenylpyrazolyl-ethylamine (L5) and ... -
(Ferrocenylpyrazolyl)zinc(II) acetate complexes as initiators and catalysts for the ring opening polymerization of ϵ-caprolacton
(Elsevier, 2015)The reaction of Zn(OAc)2 with 3-ferrocenylpyrazol-1-ylmethylenepyridine (L1), 3-ferrocenyl-5-methylpyrazol-1-ylmethylenepyridine (L2), 3-ferrocenylpyrazol-1-ylethylamine (L3) and 3-ferrocenyl-5-pyrazol-1-ylethylamine (L4) ... -
(Ferrocenylpyrazolyl)zinc(II) benzoates as catalysts for the ring opening polymerization of e-caprolactone
(Elsevier, 2015)The reaction of Zn(OAc)2 and C6H5COOH or 3,5-NO2-C6H3COOH with 3-ferrocenylpyrazolyl-methylenepyridine (L1), 3-ferrocenyl-5-methylpyrazolyl-methylenepyridine (L2), 3-ferrocenylpyrazolyl-ethylamine (L3) and 3-ferrocenyl-5 ...