Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"'O' levels"”.
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Towards next-generation enzymatic generators of hydrogen peroxide in quantitative redox biology
… methodologies to both measure and perturb H₂O₂ levels inside and outside cells. To perturb H₂O₂ levels, researchers have historically used bolus addition to cell culture or stimulation and inhibition of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. However, these methodologies add …
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Effect of incubation temperature and composition of brucella agar on growth of Campylobacter jejuni
… to support growth of C. jejuni under various O₂ levels equivalent to or even better than that obtained with fresh Brucella medium. Moreover, when Brucella agar was prepared from the individual chemical and peptone components, only the medium containing the 0.01% bisulfite yielded colony counts of …
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Respiratory behaviour and quality attributes of fresh apple slices in modified atmosphere systems
… of the storage temperature and the variety, CO₂ levels for apple slices in respiratory chambers increased linearly with time (r > 0.99). O₂ consumption curves for apple slices of both varieties were biphasic with a linear saturated region followed by a logarithmic unsaturated region. However, at …
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Teachers' perceptions on the use of local languages as medium of instruction from grade 1-4 in selected Private Schools of Lusaka
… be need to change the usual language of five “o” levels with English to five “o” levels with a language as passing subjects in promotion examinations to grades 9 and 12 and to University and colleges.
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Mechanisms of biogenic formaldehyde generation in wood
… 2016) restrict allowable emissions to such low levels that biogenic CH₂O may affect regulation compliance. The industry has met the latest regulations with new amino resin technologies. Nevertheless persistent anecdotal reports suggest that biogenic CH₂O complicates regulation compliance. This …
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The use of natural pressurised forced ventilation in plant micropropagation
… accumulated ethylene and in keeping CO₂ and O₂ levels in culture vessels close to atmospheric.This forced ventilation system has also been shown to be very effective in the in vitro cultivation of seedlings or cuttings of cauliflower, tobacco, Annona and potato for improving growth and …
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Benzoic acid regulates the physio-biochemical responses of chia (Salvia hispanica L.) seedlings under salinity stress
… damage by reducing superoxide anion (O₂˙⁻) levels, altering total phenolic content (TPC) and total flavonoid content (TFC), and preventing the increase in cell death, observed under 100 mM NaCl. These results suggest that exogenously applied benzoic acid enhances chia tolerance to osmotic …
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School Certificate Examinations in England, 1918-1950 A historical investigation of the formation and maintenance of a national examination system: Examination Boards, teachers and the state
This dissertation calls for a reevaluation of the place of the School Certificate Examinations (SCE) in the history of the examination system in England. The SCE scheme has been portrayed as the inevitable successor to the independently run “Local Examinations” of the nineteenth century and as a …