Browsing by Author "Abdulrahman, M."

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    Comparism of antimicrobial and wound healing properties of Albizia chevalieri and Commiphora kerstingii in rabbit
    (Nigerian Veterinary Medical Association, 2018-10) Olusanmi, F.T.; Adeyaju, J.B.; Fadason, S.T.; Awasum, C.A.; Ambali, S.F.; Abidoye, E.O.; Abdulrahman, M.; Baba, A.A.; Daodu, O.B.
    Wound treatment and wound healing have often been made difficult and complicated by the presence of infective microbial particles. The aim of this study was to investigate the wound healing and antimicrobial activities of methanol leaf extracts of the plants Albizia chevalieri and Commiphora kerstingii. Extraction of the dried pounded plants was done using methanol as solvent in Soxhlet apparatus (Quick fit, England). Preliminary phytochemical screening of the plant extracts was carried out using standard methods. Twelve rabbits of both sexes were divided into four groups (A, B, C, and D) each consisting of three rabbits. Bilateral full thickness excision wounds measuring 2cm x 1cm were surgically induced on the dorsum (lumbar region) of each rabbit. Rabbits in the group A were treated with the vehicle petroleum jelly (Unilever PLC) (Negative control), while those in group B were treated with 2%w/w penicillin ointment (positive control). Rabbits in groups C and D were treated with the extracts of A. chevalieri (1g/10g petroleum jelly (AC) and C. kerstingii extract (1g/10g petroleum jelly (CK) respectively. The wounds were treated every 48 hours for three weeks and evaluated for exudation in terms of rate and nature, wound contraction and epithelization. The antimicrobial activities of the methanol leaf extracts of the plats were determined against S. aureus (Gram positive organism) and E. coli (Gam negative organism) using agar gel diffusion methods. The extracts of A. chevalieri and C. kerstingii contain the following metabolites: flavonoids, tannins, alkaloids, saponins, cardiac glycosides, steroids, triterpenes and carbohydrates. The results showed a consistent decline in bacterial colony count in all the groups irrespective of the treatment formulation used. Exudation decreased drastically with treatment in Groups C and D, while animals in groups A and B showed moderate production of exudate up till the 7th day of treatment which gradually declined between the 19th and 13th day. Wounds of animals in Group C showed faster rate of wound contraction, decreased epithelization period and increased healthy granulation tissue formation. This was followed by wounds of animals in group B, wounds of animals in group D and lastly wounds of animal in Group A. No antimicrobial effect was shown by wounds of Group A against any of the tested microorganisms. The 2% w/w penicillin ointment showed remarkable activity against the Gram-positive S. aureus (28mm) and Gram-negative E. coli (26 mm). A. chevalieri extract exhibited tremendous activity against the Gram-positive S. aureus (30 mm) but no effect against Gram negative E. coli, while C. kerstingii extract showed remarkable activity against the Gram-negative E. coli (24 mm) but no effect against Gram-positive S. aureus. The result of this study showed that methanol leaf extract of the plant A. chevalieri was more effective, followed by methanol leaf extract of C. kerstingii and the influence on wound healing was to a large extent comparable to 2% w/w penicillin ointment with no adverse reactions.
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    Hybridization of OFDMand Physical Layer Techniques for Information Security in Wireless System
    (Sule Lamido University Journal of Science &Technology, 2023-03) Olawoyin, L. A.; Abdulrahman, M.; Faruk, N.; Oloyede, A. A.; Adeniran, T. C.; Imam-Fulani, Yusuf Olayinka; Lasisi, H. O.; Sikiru, Ismaeel Abiodun; Baba, B. A.
    Due to quest for high data rate, reliable and secure communication, this has motivated both wired and wireless network shown that for all the modulation schemes, the key rate increases with an increase in the reserved subcarrier bits. schemes are implemented in securing the information transfer between two legitimate parties. In the simulation, the techniques may not be acceptable for future decentralized networks due to their high complexity in implementation source data are encrypted by obfuscation with dummy data in between the encrypted data of which 52 subcarriers power, and allocation of bits among different users. Traditionally, securing data in wireless system is always at the and computation. In this work, an OFDM IEEE 802.11a wireless system is used and physical layer encryption (PLE) frequency division multiplexing(OFDM) enablesreliable transmission of various data traffic by optimizing subcarrier, conducted for four different modulation techniques i.e.,BPSK, QPSK, 16 QAM, and 64 QAM. The result obtained were considered of which 25 subcarriers are reserved for dummy data and 27 were for data. The simulation was access service providers to deploy a next-generation network with ability to meet the required need. The use orthogonal upper layer of open system interconnection(OSI) Model by using data encryption techniques. However, such Also,the security level increased when substantial percentages of the subcarriers are reserved for dummy data.