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- 저자 : Fuseini Mohammed (검색결과 2 건)
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Mohammed Fuseini,Moustafa Mahmoud Yousry Zaghloul 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-
In this current study, the electrophoretic deposition (EPD) process of polyaniline (PANI) is reported kineticallyvia the use of response surface methodology (RSM) with a focus on the three models of kinetics;Hamaker, Zhang, and Baldisseri using both statistical and quantitative techniques. The particles of formicacid and acetonitrile-based suspensions as a result of the electrostatic interaction were evaluated usingparticle size and zeta potential analyses. The fundamentals of PANI-EPD kinetics were used to demonstratethe influence of the EPD parameters on the properties of the deposited films over an interval of180–600 s. The cathodic reduction during PANI-EPD simultaneously, the entanglement process and thecontrol of the kinetics was once reported. Therefore, low voltages were used to avoid significant lossof PANI, which decreases during the EPD process, initiated by physicochemical characterization (SEM,FT-IR and XRD). The effect of deposition time and deposition voltage on PANI-EPD kinetics at intervals(180–600 s) was quantified by RSM. Accordingly, the result obtained obeyed a linear growth law consistentwith Hamaker’s’ law. For comparison, optical absorbance and profilometry provide an approximationof PANI’s deposition rate, extinction coefficient, and density. Again, the Baldisseri model was ableto reproduce experimental data well alongside some other semi-empirical equations of kinetics. Thestudy is very significant in terms of the process through which thermal degradation occurs and as a resultused this to anticipate the thermal stability of a process, thereby avoiding thermal degradation of polymerproducts as an industrial application.
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In-vitro Regeneration of Interspecific Hybrids in Eggplant Species via Seed and Embryo Culture
Nusrat Tsemah Afful,Daniel Nyadanu,Richard Akromah,Harry Mensah Amoatey,Fuseini Mohammed,Clement Annor 한국육종학회 2020 Plant Breeding and Biotechnology Vol.8 No.3
Interspecific hybrids of eggplants (Salanum species) are of prime concern to breeders, as they allow introgression of useful genes from wild species to cultivated ones. However, successful hybridization between species is usually very low. This hampers development of improved hybrids. In-vitro culture techniques may be used to overcome interspecific barriers. Seeds and excised embryos obtained from two crosses (Solanum (S.) melongena × S. torvum and S. melongena × S. anguivi) were inoculated on Murashige and Skoog (MS) basal medium supplemented with varying concentrations of 3-indoleacetic acid (IAA) and 6-benzylaminopurine (BAP). Addition of hormones in the culture medium significantly (P < 0.05) improved root and shoot emergence, seed germination and seedling survival. However, excised embryos cultured on the same medium did not develop. Hybrid seeds cultured on MS medium supplemented with different concentrations of IAA and BAP germinated within 6-14 days (SM001-07 × ST004-03) and 4-10 days (SM001-07 × San005-01). Optimal concentration of IAA and BAP for seed germination and seedling survival depended on hybrid type. Regenerated plantlets were successfully transferred to the field after initial acclimatization. High levels of heterosis observed for number of seeds/fruit and fruit breadth suggested an opportunity for developing F1 hybrids with desirable fruit characters for improved fruit yield.
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