Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Tesfaye Waryo"'
Autor:
Hlamulo R. Makelane, Oluwakemi Tovide, Christopher E. Sunday, Tesfaye Waryo, Emmanuel I. Iwuoha
Publikováno v:
Sensors, Vol 15, Iss 9, Pp 22343-22363 (2015)
A novel dendritic star-copolymer, generation 3 poly(propylene thiophenoimine) (G3PPT)-co-poly(3-hexylthiophene) (P3HT) star co-polymer on gold electrode (i.e., Au|G3PPT-co-P3HT) was used as a sensor system for the determination of phenanthrene (PHE).
Externí odkaz:
https://doaj.org/article/149c994641614a08992362773cb5f111
Autor:
Christopher Edozie Sunday, Milua Masikini, Lindsay Wilson, Candice Rassie, Tesfaye Waryo, Pricilla G. L. Baker, Emmanuel I. Iwuoha
Publikováno v:
Sensors, Vol 15, Iss 2, Pp 3854-3871 (2015)
In this paper, we report a new concept to construct a label-free electrochemical inhibition-based immunosensor for the detection of the mycotoxin deoxynivalenol (DON) in cereal samples. The electrochemical impedance spectroscopy of tris(bipyridine) r
Externí odkaz:
https://doaj.org/article/027b0fab76824897804dd6f359de3ffb
Autor:
Ninon G.E.R. Etsassala, Tesfaye Waryo, Olugbenga K. Popoola, Adewale O. Adeloye, Emmanuel I. Iwuoha, Ahmed A. Hussein
Publikováno v:
Sensors, Vol 19, Iss 5, p 1035 (2019)
South Africa is a country with a wide variety of plants that may contain excellent anti-tyrosinase inhibitors. With wide applications in cosmetics, pharmaceuticals and food products, tyrosinase inhibitors have received very special attention in the r
Externí odkaz:
https://doaj.org/article/8dc63f3de6d84ad7b164679cb32468b4
Autor:
Omotayo Arotiba, Joseph Owino, Everlyne Songa, Nicolette Hendricks, Tesfaye Waryo, Nazeem Jahed, Priscilla Baker, Emmanuel Iwuoha
Publikováno v:
Sensors, Vol 8, Iss 11, Pp 6791-6809 (2008)
An electrochemical DNA nanobiosensor was prepared by immobilization of a 20mer thiolated probe DNA on electro-deposited generation 4 (G4) poly(propyleneimine) dendrimer (PPI) doped with gold nanoparticles (AuNP) as platform, on a glassy carbon electr
Externí odkaz:
https://doaj.org/article/fceb10fb26aa43d3be013e95236e63fd
Publikováno v:
Talanta. 196:204-210
A sensitive dendritic star copolymer-based sensor for pyrene (PY), was developed by in situ electrosynthesis of generation 3 poly(propylene thiophenoimine)-co-poly(3-hexylthiophene) (G3PPT-co-P3HT) on a gold disk electrode (Au). The electrochemical r
Autor:
Edward Malenga, L.C. Razanamahandry, Miranda M. Ndipingwi, Malik Maaza, Tesfaye Waryo, Chinwe O. Ikpo, Noluthando Mayedwa, Fabian I. Ezema, Assumpta C. Nwanya, Emmanuel I. Iwuoha, Elvis Fosso-Kankeu, Seteno Karabo Obed Ntwampe
Publikováno v:
Electrochimica Acta. 301:436-448
Copper oxide nanoparticles were synthesized using an eco-friendly, simple and cost effective green synthesis method mediated by maize (Zea mays L.) fresh husk extract. Pure reddish cubic Cu2O nanoparticles were obtained for the first time via this gr
Autor:
Lindsay Wilson, Nomaphelo Ntshongontshi, Unathi Sidwaba, Tesfaye Waryo, Usisipho Feleni, Emmanuel I. Iwuoha
Publikováno v:
Electrocatalysis. 10:323-331
In addition to attack by communicable diseases and unforeseen outbreak of different pathogens, endocrine-disrupting chemicals (EDCs) destroy the human system. Bisphenol A (BPA) is an endocrine-disrupting chemical found in daily useable plastic-ware a
Autor:
Merid Tessema, Shimelis Admassie, Priscilla G. L. Baker, Tesfaye Waryo, Molla Tefera, Emmanuel I. Iwuoha
Publikováno v:
Sensing and Bio-Sensing Research, Vol 21, Iss, Pp 27-34 (2018)
An electrochemical sensor was developed based on graphen oxide-polypyrrole modified glassy carbon electrode (GO/PPy/GCE) for sensitive determination of phenothrin in fruit samples. GO/PPy/GCE was characterized by scanning electron microscopy (SEM), F
Autor:
Anne Lutgarde Djoumessi Yonkeu, Tesfaye Waryo, Suru Vivian John, Oluwakemi Tovide, Hlamulo Makelane, Emmanuel I. Iwuoha
Publikováno v:
Electroanalysis. 29:1887-1893
A sensitive anthracene (AN) sensor was developed with a gold electrode modified with a dendritic star-copolymer film by in situ electrochemical co-polymerization of generation 3 propylenethiophenoimine and 3-hexylthiophene. The sensor's {Au/G3PPT-co-
Autor:
Usisipho Feleni, Sinazo Qakala, Ezo Nxusani, Tesfaye Waryo, Candice Rassie, Rachel Fanelwa Ajayi, Priscilla G. L. Baker, Milua Masikini, Emmanuel I. Iwuoha, Hlamulo Makelane, Unathi Sidwaba, Lindsay Wilson
Publikováno v:
Journal of Nano Research. 44:281-292
Polyaniline (PANI) is a globally investigated conductive polymer with a variety of applications in various fields due to its ease of synthesis and modification. One method of enhancing the physico-chemical properties and processability of PANI is the