Browsing Faculty of Natural and Agricultural Sciences by Subject "Characterization"
Now showing items 1-6 of 6
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The effect of acid washing on the pyrolysis products derived from a vitrinite-rich bituminous coal
(Elsevier, 2015)Extensive characterization of the pyrolysis products, derived from raw and acid washed samples of a vitrinite-rich South African bituminous coal is reported. Pyrolysis experiments were carried out with use of a modified ... -
Isolation and identification of potential antibiotic producing rare actinomycetes from Rhizospheric soils
(Kamla-Raj, 2016)The search for novel antibiotics producers and their characterization continues to be an important objective in the discovery of novel bioactive compounds. This work was carried out to isolate and id entify bioactive ... -
New tests for exponentiality based on a characterization with random shift
(Taylor & Francis, 2020)We derive the efficiencies of two new tests for exponentiality which are based on a recent characterization that uses the idea of a random shift. The finite-sample performance of the newly proposed tests is evaluated and ... -
On a new goodness-of-fit test for the Rayleigh distribution based on a conditional expectation characterization
(Taylor & Francis, 2020)We propose and study new goodness-of-fit tests for the Rayleigh distribution based on a characterization involving a conditional expectation. The asymptotic properties of the tests are explored and the performance of the ... -
Oxidative copolymerization of p-phenylenediamine and 3-aminobenzenesulfonic acid
(Elsevier, 2016)The sulfonation of poly(p-phenylenediamine) (P(pPD)) was achieved by oxidative copolymerization of p-phenylenediamine (pPD) and 3-aminobenzenesulfonic acid (3ABSA) monomers using ammonium persulfate ((NH4)2S2O8). The yield, ... -
Synthesis and characterization of sulfonated poly(pphenylenediamine) prepared by different procedures
(Elsevier, 2015)The sulfonation of poly(p-phenylenediamine) (P(pPD)) polymer was reported and described in this study. The sulfonated P(pPD) polymers (SP(pPD)) with a degree of sulfonation (S/N molar ratio) range of 0.07–0.38 were prepared ...