Ibrahim Ondicho; Bernard Alunda; Dicken Owino; Luke Otieno; Melody Chepkoech(The Chinese Society for Metals, 2020)
A transformation-induced plasticity phenomenon in Fe65(CoCrMnNi)35 medium-entropy alloy was investigated. According to the X-ray diffraction patterns, the as-cast specimen contains a single-phase face-centered cubic (fcc), ...
Bernard Ouma Alunda; Yong Joong Lee; Soyeun Park(Japanese Journal of Applied Physics, 2018-05-08)
A typical line-scan rate for a commercial atomic force microscope (AFM) is about 1 Hz. At such a rate, more than four minutes of scanning time is required to obtain an image of 256 ' 256 pixels. Despite control electronics ...
Elvira F. Tanjung; Bernard O. Alunda; Yong Joong Lee; Daeseong Jo(Nuclear Engineering and Technology, 2018)
Experiments were performed to investigate bubble behaviors and pool boiling Critical Heat Flux (CHF) on a thin flat rectangular copper heater fabricated on Printed Circuit Board (PCB), at various inclinationangles. The ...
E.K. Mutinda; B.O. Alunda; D.K. Maina; R.M. Kasomo(The Journal of the Southern African Institute of Mining and Metallurgy, 2021-03)
Assessment of blast fragment size distribution is critical in mining operations because it is the initial step towards mineral extraction. Different empirical models and techniques are available for predicting and investigating ...
Yeongcheol Park; Suyeong Lee; Sung Soo Ha; Bernard Alunda; Do Young Noh; Yong Joong Lee; Sangwon Kim(MDPI, 2019-05-10)
The thermal conductivity (k) of poly(acrylic acid) (PAA) nanofibers, which were electrospun
at various electrospinning voltages, was measured using suspended microdevices. While the thermal conductivities of the as-spun ...
Ibrahim Ondicho; Bernard Alunda; Nokeun Park(Intermetallics, 2021)
In the present study, a systematic investigation on the effect of Fe content on the Hall-Petch coefficient of (CoCrMnNi)100-x Fex (x = 20, 40, 50, and 60) medium- and high-entropy alloys (M/HEAs) was carried out. The ...
Bernard Ouma Alunda; Yong Joong Lee(MDPI, 2020-08-25)
This review critically summarizes the recent advances of the microcantilever-based force
sensors for atomic force microscope (AFM) applications. They are one the most common mechanical spring–mass systems and are extremely ...
Samantha Kahoya Nyongesa; Marianne Maghenda; Mika Siljander(_____________________________________________________________________________________________________*Corresponding author: E-mail: samanthanyongesa@gmail.com, kahoyasamantha93@gmail.com;Journal of Geography, Environment andEarth Science International, 2022)
Rapid and uncontrolled urbanization is a major issue in both developing and developed countries. Uncontrolled urbanization has resulted to unplanned expansion of residential and commercial areas, informal ...
Martha Munyao; Mika Siljander; Tino Johansson; Godfrey Makokha; Petri Pellikka(Global Ecology and Conservation, 2020)
People and wildlife have co-occurred, sharing resources for thousands of years, however,
over the last four decades records of humanewildlife conflict have increasingly emerged.
Humaneelephant conflict is a form of such ...
Gilbay Obunga; Mika Siljander; Marianne Maghenda; PKE Pellikka(Journal for Nature Conservation, 2021)
Tropical montane forests are known to support many endemic species with restricted geographic ranges. Many of
these species are however, faced with numerous threats, most notably from habitat loss and degradation,
invasive ...
Denis Simon Ombuna; Karim Omido; Hamadi Musa Garashi; Odhiambo Odera; Ochieng Okaka(International Journal of Information Technology and Business Management, 2013-02-28)
The study sought to examine the impact of balance scorecard usage on the performance
of commercial banks in Kenya. The study location was in Nakuru District, Kenya where a
census research design was adopted. Convenient ...
Solid mine waste management is a continuous and systematic assessment of the potential
hazards, disposal, and proper utilization of waste produced in a mining company during the
mining and mineral processing stages. In ...
Equipment selection is key activity in mining operation because it accounts to more than 60%
of total operation cost. When selection of equipment is not properly done it results into over-
trucking or under-trucking. ...
Haulage of materials in Open-pit mines contributes to approximately 40%-60% of the
total operational costs. Current stricter environmental conditions, an increase in depths
and size of open-pit mines, an increase in ...
Erastus, Kiswili Nyile; Dr Ismail, Noor Shale; Dr Anthony, Osoro(International Journal of Scientific and Research Publications, 2022-04-27)
The purpose of this study was to explore the influence of supply chain resilience on performance of humanitarian aid organizations in
Kenya. The study was anchored on the Complex Adaptive Systems Theory and employed survey ...
—Recent research indicate a surge in the use of
machine learning and artificial intelligence to
compliment the processes of human visual perception. In
particular, applying closeness measures of digital objects
is ...
Josua, Mwanyekange; Samuel, Musili Mwalili; Oscar, Ngesa(International Journal of Statistics and Probability, 2019)
Joint models for longitudinal and time to event data are frequently used in many observational studies such as clinical trials
with the aim of investigating how biomarkers which are recorded repeatedly in time are associated ...
MOHAMED, Mariam B.; NDINYA, Amina; OGADA, Maurice(International Journal of Development and Management Review, 2019)
Mining is an expensive business and firms have to be cost sensitive in their operations to
ensure high performance. Consequently, mining firms such as medium scale miners
(MSMs) in Taita Taveta County, Kenya have ...
Research on rural energy has in the past focussed on access and environmental effects.
Little is however documented on the relationship between declining availability of wood
fuel, household cooking and eating patterns, ...
Suleman Nasiru; Peter, N. Mwita; Oscar, Ngesa(Journal of King Saud University, 2017-06)
In this study, the exponentiated generalized exponential Dagum distribution has been proposed and
studied. This family of distribution consists of a number of sub-models such as the exponentiated gener alized Dagum ...