排序方式: 共有42条查询结果,搜索用时 15 毫秒
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Olagunju Solomon O. Atayese Muftau O. Sakariyawo Olalekan S. Dare Enoch O. Nassir Adesola L. 《SILICON》2021,13(9):3059-3073
Silicon - Lodging resistance in upland rice requires adequate knowledge of the mechanical basis of culm morphological traits (CMTs) with potential for improved structural integrity under... 相似文献
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One way of sustaining fuel cell technology is using renewable and sustainable energy means provided by biomass. This article explores switchgrass and poplar in a molten carbonate electrolyte direct carbon fuel cell. It investigates their electrochemical conversions and provides results of power density, current density, open circuit voltage (OCV) and other parameters. The biomasses were pyrolysed at 800°C to produce carbon fuels. Biomass carbon fuels were mixed with molten carbonate and subjected to different operating conditions (600–800°C) in the fuel cell. The electrochemical performances of the poplar fuel were better than those experienced with switchgrass fuel. At 800°C the OCV of poplar fuel (1.08?V) has higher output than switchgrass (0.87?V). The peak power density recorded for poplar fuel was 23.91?mW/cm2 while switchgrass fuel was lower at 21.60?mW/cm2. Poplar fuel (81.53?mA/cm2) gave a maximum current density with switchgrass fuel lower at 74.00?mA/cm2. 相似文献
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Olatunde S. Olatunji Beatrice O. Opeolu Olalekan S. Fatoki Bhekumusa J. Ximba 《Sensing and Instrumentation for Food Quality and Safety》2013,7(3):122-128
This study investigates the concentration profiles of selected polycyclic aromatic hydrocarbon (PAH) fractions in selected processed meats, in order to evaluate their dietary and health implications. Smoked, grilled and boiled meat products were bought from different locations in Cape Town and Cape Town environs. PAHs were extracted from each meat sample according to standard methods. The concentrations of benzo[k]fluoranthene (BkP), benzo[a]pyrene (BaP), indeno[1, 2, 3-cd]pyrene (IP), and benzo[g, h, i]perylene(BghiP) in the processed meat extracts were determined using a gas chromatograph coupled with flame ionization detector. Total PAH concentrations in smoked, grilled and boiled chicken fillets, pork, and beef stripes were ranged 2.79, 0.99, 2.33 μg/kg; 19.11, 11.17, 15.04 μg/kg; and 14.84, 9.29, 7.20 μg/kg respectively. There were significant differences (p > 0.05) in the concentration levels of PAHs detected in different types, with the highest levels observed in smoked pork meat. The concentration of BkP, BaP, IP and BghiP detected in the various meat samples were below the EU and WHO dietary exposure limit. 相似文献
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D. A. Kudryashov S. N. Grushevskaya O. Olalekan N. V. Kukhareva A. V. Vvedenskii 《Protection of Metals and Physical Chemistry of Surfaces》2010,46(1):32-39
The current efficiency of the formation of anodic oxide on polycrystalline silver is shown to decrease with an increase in
the concentration of KOH solutions, while the rate-limiting stage remains the solid-phase mass transfer. Photopotential in
nano-size Ag(I) oxide films anodically formed on polycrystalline silver is independent of the OH− ion concentration, which means that a photoresponse is generated in the bulk oxide. The n-type conductivity of oxide films on silver, Ag-Au alloys, and low-index silver crystal faces, which was determined previously
when measuring photocurrent, is confirmed. Replacing polycrystalline silver with its monocrystals results in a substantial
decrease in the photopotential amplitude due to the decrease in the deviation from a stoichiometric composition. The electron
mobility and the partial electronic photoconductivity in the anodic Ag(I) oxide depend on the orientatinon of the crystal
face in silver and the gold content. At E = 0.56 V, a series of changes in these characteristics correlates to the changes in other structure-dependent parameters
of Ag2O oxide (the optical absorption coefficient α, the concentration of donor defects N
D, the width of the spatial charge region W, and the Debye screening length L
D). 相似文献
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Michael O. Akharame Olalekan S. Fatoki Beatrice O. Opeolu Daniel I. Olorunfemi 《Polymer-Plastics Technology and Engineering》2018,57(17):1801-1827
A decline in the world’s freshwater resources poses a major domestic and industrial challenge. Amelioration efforts that proffer possible water management and reclamation technology is therefore, of utmost priority. One of the most promising solutions to water conservation is to recycle wastewater. The use of polymeric nanocomposites (PNCs) in water treatment/remediation processes provides possible solution to recycling. This overview focused on PNCs; to highlight trends in their fabrication, characterization and application procedures for wastewater remediation and monitoring. Key issues bothering on the regeneration and reuse of PNCs were discussed, along with projections for their rational design for safe application. 相似文献
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