Faculty of Sciences: Recent submissions

Now showing items 41-60 of 87

Link between migration status and occupational health and safety of Filipino migrant workers in South Korea

Amit, Lito M.; Ultra Jr, Venecio U.; Song, Young Woong (Philippine Journal of Science, 2020-06)

With its offer of competitive compensation and attractive employment permit system (EPS), South Korea has recently experienced an influx of migrant workers. There has been a concomitant rise in the concerns about the health ...
Gaussian process simulation of soil Zn micronutrient spatial heterogeneity and uncertainty – A performance appraisal of three semivariogram models

Eze, Peter N.; Kumahor, Samuel K. (Elsevier B.V., 2019-09)

Geostatistical modelling has proven to be a good tool for decision making in soil nutrient management because it has the ability to map spatial heterogeneity and uncertainty. This study outlines a comparative approach to ...
Fly ash and compost amendments and mycorrhizal inoculation enhanced the survival and growth of Delonix regia in Cu-Ni mine tailings

Ultra Jr, Venecio (Philippine Journal of Science, 2020-09)

Delonix regia, an ornamental tree that can tolerate an elevated level of heavy metals, was evaluated for phytoremediation potential in mine tailings with fly ash, compost, and mycorrhiza. A two-factorial experiment was ...
Advances in nanoscale study of organomineral complexes of termite mounds and associated soils: A systematic review

Eze, Peter N.; Kokwe, Atlasaone; Eze, Juliet U (Hindawi, 2020-03-19)

Termite mounds are replete with natural nanoparticles, and they vary in physicochemical, geochemical, mineralogical, and biological properties from the adjoining soils. Although termite mounds have wide ecological and ...
Visualizing the invisible: class excursions to ignite children’s enthusiasm for microbes

McGenity, Terry J; Gessesse, Amare; Hallsworth, John E; Cela, Esther Garcia; Verheecke-Vaessen, Carol; Wang, Fengping; Chavarrıa, Max; Haggblom, Max M; Molin, Søren; Danchin, Antoine; Smid, Eddy J; Lood, Cedric; Cockell, Charles S; Whitby, Corinne; Liu, Shuang-Jiang; Keller, Nancy P; Stein, Lisa Y; Bordenstein, Seth R; Lal, Rup; Nunes, Olga C; Gram, Lone; Singh, Brajesh K; Webster, Nicole S; Morris, Cindy; Sivinski, Sharon; Bindschedler, Saskia; Junier, Pilar; Antunes, Andre; Baxter, Bonnie K; Scavone, Paola; Timmis, Kenneth (John Wiley & Sons Ltd and Society for Applied Microbiolog, 2020-05-14)

We have recently argued that, because microbes have pervasive – often vital – influences on our lives, and that therefore their roles must be taken into account in many of the decisions we face, soci ety must become ...
Effect of Zr doping on the structural and electrical properties of spray deposited TiO2 thin films

Oluwabi, Abayomi T; Juma, Albert O; Acik, Ilona Oja; Mere, Arvo; Krunks, Malle (Estonian Academy Publishers, 2018-06-20)

Doping is an effective material re-engineering technique, which provides a possibility of improving properties of materials for different applications. Herein, a Zr-doped TiO2 thin film was deposited applying ...
Optimal control strategy for TB-HIV/AIDS co-infection model in the presence of behaviour modification

Awoke, Temesgen Debas; Kassa, Semu Mitiku (MDPI AG, 2018-05-01)

A mathematical model for a transmission of TB-HIV/AIDS co-infection that incorporates prevalence dependent behaviour change in the population and treatment for the infected (and infectious) class is formulated and analyzed. ...
Halpern–Ishikawa type iterative method for approximating fixed points of non-self pseudocontractive mappings

Zegeye, Habtu; Tufa, Abebe Regassa (Springer Nature, 2018-06-04)

In this paper, we define a Halpern–Ishikawa type iterative method for approximating a fixed point of a Lipschitz pseudocontractive non-self mapping T in a real Hilbert space settings and prove strong convergence result of ...
An iterative method for tri-level quadratic fractional programming problems using fuzzy goal programming approach

Kassa, Semu Mitiku; Tsegay, Teklay Hailay (Springer, 2017-08-01)

Tri-level optimization problems are optimization problems with three nested hierarchical structures, where in most cases conflicting objectives are set at each level of hierarchy. Such problems are common in management, ...
A novel moderately thermophilic type Ib methanotroph isolated from an alkaline thermal spring in the Ethiopian Rift Valley

Islam, Tajul; Gessesse, Amare; Garcia-Moyano, Antonio; Murrel, Colin; Øvreås, Lise (Multidisciplinary Digital Publishing Institute, 2020-02-13)

Aerobic moderately thermophilic and thermophilic methane-oxidizing bacteria make a substantial contribution in the control of global warming through biological reduction of methane emissions and have a unique capability ...
Synthesis of mixed ligand ruthenium (II/III) complexes and their antibacterial evaluation on drug-resistant bacterial organisms

Matshwele, James T. P.; Nareetsile, Florence; Mapolelo, Daphne; Matshameko, Pearl; Leteane, Melvin; Nkwe, David O.; Odisitse, Sebusi (Hindawi Limited, 2020-03-19)

The potential antimicrobial properties of a tridentate polypyridyl ligand 4-butoxy-N,N-bis(pyridin-2-ylmethyl)aniline (BUT) 1 and its corresponding mixed ligand ruthenium complexes were investigated on drug-resistant and ...
Soil properties influence bacterial abundance and diversity under different land-use regimes in semi-arid environments

Mhete, Modise; Eze, Peter N.; Rahube, Teddie; Akinyemi, Felicia (Elsevier B.V., 2019-11)

Bacterial diversity is known to be a driver of soil ecosystem services and it is influenced by the natural integrity of the environments. Samples from garden soil, saline soil and sludge-impacted soil were studied to ...
Algorithm for compressing/decompressing Sudoku grids

Nedev, Zhivko; Zungeru, Adamu Murtala; Khov, Suykhun; Dy, Daravisal; Sov, Kimkhung (Science publications, 2020-11)

We describe a way to transfer efficiently Sudoku grids through the Internet. This is done by using linearization together with compression and decompression that use the information structure present in all sudoku grids. ...
Effect of innate and adaptive immune mechanisms on treatment regimens in an AIDS- related Kaposi's Sarcoma model

Chimbola, Obias Mulenga; Lungu, Edward; Szomolay, Barbara (Taylor and Francis Ltd, 2021-04-12)

Kaposi Sarcoma (KS) is the most common AIDS-defining cancer, even as HIV-positive people live longer. Like other herpesviruses, human herpesvirus-8 (HHV-8) establishes a lifelong infection of the host that in association ...
Comparison of CaO-NPs and Chicken Eggshell-Derived CaO in the production of Biodiesel from Schinziophyton rautanenii (Mongongo) Nut Oil

Mmusi, Keene Carlvin; Odisitse, Sebusi; Nareetsile, Florence (Hindawi Limited, 2021-02-27)

The ever-increasing population growth and economic developments have heightened demand for energy. This has resulted in depletion and ever-rising prices of petroleum diesel, thus increasing environmental degradation. These ...
A computational study of the s2 state in the oxygen-evolving complex of photosystem II by electron paramagnetic resonance spectroscopy

Baituti, Bernard; Odisitse, Sebusi (MDPI, 2021-05-04)

The S2 state produces two basic electron paramagnetic resonance signal types due to the manganese cluster in oxygen-evolving complex, which are influenced by the solvents, and cryoprotectant added to the photosystem II ...
Fixed points of relaxed (ψ, ϕ)-weakly N-contraction mappings in modular spaces

Wega, Getahun Bekele; Habtu, Zegeye Hailu; Boikanyo, Oganeditse A (University of Niˇs, Serbia, 2020)

The purpose of this paper is to study the existence and approximation of a common fixed point of a pair of mappings satisfying a relaxed (ψ, ϕ)-weakly N-contractive condition and existence and approximation of a fixed point ...
A strong convergence theorem for a zero of the sum of a finite family of maximally monotone mappings

Wega, Getahun Bekele; Habtu, Zegeye Hailu; Boikanyo, Oganeditse A (De Gruyter, 2020-07-08)

The purpose of this article is to study the method of approximation for zeros of the sum of a finite family of maximally monotone mappings and prove strong convergence of the proposed approximation method under suitable ...
The exponentiated odd weibull-topp-leone-g family of distributions: model, properties and applications

Chamunorwa, Simbarashe; Oluyede, Broderick; Makubate, Boikanyo; Chipepa, Fastel (Pakistan Journal of Statistics, 2021-04)

In this paper, a new generalized family of distributions called the exponentiated odd Weibull-Topp-Leone-G (EOW-TL-G) family of distributions is presented. A linear representation of the proposed model is ...
Masamu program, a US-Africa partnership

Jenda, Overtoun; Lungu, Edward (American Mathematical Society, 2021-02)

The primary goal of the Masamu (note that “masamu” means mathematics in Southern Africa) Program is to enhance research in the mathematical sciences and related areas within the Southern Africa Mathematical ...

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