School of Engineering and Technology

An Appraisal on the Potential uses of Bentonite and its Availability and Exploitation in Kenya

Mutisya, Peter K.; Maranga, SM; Ikua, Bernard W (2022-06)

— Bentonite is a smectite clay formed from the alteration of siliceous, glass-rich volcanic rocks such as tuffs and ash deposits. The major mineral in bentonite is montmorillonite, which is a hydrated sodium, calcium, ...

Developing a Secure Messaging Platform in Mobile SMS Using Advanced Encryption Standard Concept

Mutua, Veronicah; Mwaura, Andrew (2014-04)

Billions of text messages are sent daily through GSM networks sent in plain text format which makes them susceptible to various attacks. With the increasing number of software crackers available for free in the internet, ...

Partial Isothermal Sections of the Cu-Rich Corner of the Al-Cu-Zn System at 200 and 240 °C

Ngugi, Johnson; Rading, George Odera; Ngobe, Bongani; Forbes, Roy (Springer US, 2019-06)

Partial isothermal sections of the Cu-rich corner of ternary Al-Cu-Zn system at 200 and 240 C were plotted up to 55 at.% Cu and 85 at.% Zn based on scanning electron microscopy, energy-dispersive x-ray spectroscopy and ...

Voltage Profile Analysis of 132kV Transmission Line Using Powerworld Simulator: A Case Study of JUJA-RABAI Line

Kitheka, Joel Mwithui; Musau, Peter Moses; Nyete, Abraham Mutunga (Science Publishing Group, 2022)

The growing power demand has made the government of Kenya to increase it’s financial budget to address the issue of transmission and distribution of power. The increasing set up of distribution sub-stations both in urban ...

Progression and Forecasting of Steel Demand in Kenya

Mukai, Silvanus M.; Muchiri, Peter N.; Byiringiro, Jean B. (IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), 2018-08)

Increase in usage of steel in Kenya has been witnessed due to the immense growth in the industrial sector and infrastructure. It is quite evident that as the country transforms herself into a middle income economy, it ...

Satellite early identification through LED observations: First in-orbit results from WildTrackCube-SIMBA

Piergentili, Fabrizio; Marzioli, Paolo; Frezza, Lorenzo; Curianò, Federico; Zarcone, Gaetano; Mariani, Lorenzo; Amadio, Diego; Gianfermo, Andrea; Picci, Niccolò; Bedetti, Emanuele; Hossein, Shariar Hadji; Kabutha, Daniel Kiarie; Celesti, Paola; Rossetti, Matteo; Cimino, Lorenzo; Bucciarelli, Mascia; Seitzer, Patrick; Cutler, James; Mwaniki, Charles; Toninelli, Murizio; Jahjah, Munzer; Santoni, Fabio (Science Direct, 2022-04)

Autonomous illumination payloads on-board small satellites, i.e. LED (LightEmitting Diode) boards on CubeSats, can be tracked by ground-based telescopes for optical identification, orbit determination and attitude determination. ...

Mechanical behavior and failure mode of high interstitially Alloyed Austenite under combined compression and cyclic torsion

Ngeru, Timothy; Kurtulan, Dzhem; Karkar, Ahmet; Hanke, Stefanie (MDPI, 2022-01)

multiaxial stress states frequently occur in technical components and, due to the multitude of possible load situations and variations in behaviour of different materials, are to date not fully predictable. This is ...

Comparative Study of the Current Processes used by Insurance Companies and application of Block Chain Technology on Business Performance in Kenya

Shitanda, Douglas; Musyoki, Kanuku Watson; Nganu, Margaret (International Journal of Science and Research (IJSR), 2020)

The insurance industry has been engaging in numerous processes which are characterized by the exchange of data updated by multiple parties, they have ramped up investments in their digital agenda to be at par with other ...

Factors Determining Adoption of Block Chain in the Insurance Industry: A Case of Kenya

Musyoki, Watson Kanuku; Shitanda, Douglas; Nganu, Margaret (International Journal of Science and Research (IJSR), 2020-12)

Blockchain is receiving increasing attention from academy and industry, since it is considered a breakthrough technology that could bring huge benefits to many different sectors. In 2017, Gartner positioned blockchain ...

Design, Fabrication, and Testing of a Raspador for Simultaneous Extraction and Brushing of Sisal Fibers by Small-scale Sisal Farmers

Barasa, N. W.; Njoroge, K. D.; Mbuya, T. O. (Taylor & Francis, 2021-07-10)

Demand for natural fibers is on the rise as awareness of environmental protection keeps abreast. Sisal fibers, for instance, are largely utilized not only in the manufacture of mats, ropes, carpets, and sacks but also ...

An investigation of the effects of extraction and brushing variables on the properties of hedge sisal fibers using a raspador

N. W., Barasa; K. D., Njoroge; T. O., Mbuya (Taylor & Francis, 2021-01)

Natural fibers have emerged as an important component in the development of composite materials because of their mechanical properties. The properties are highly influenced by environmental conditions and processing ...

Use of Rice Husks as partial replacement of coarse aggregates in concrete paving blocks

Musau, Mwalimu K.; Shitanda, Douglas; Githinji, Michael; Mwende, Caroline (European International Journal of Science and Technology, 2020-07-31)

Concrete paver blocks were first introduced in Holland in the fifties as replacement of paver bricks which had become scarce due to the post-war building construction boom. These blocks were rectangular ...

Use of Polyethylene Terephthalate (PET) Flakes as Coarse Aggregates Replacement in Concrete Paving Blocks

Musau, Mwalimu K.; Shitanda, Douglas; Githinji, Michael; Mwende, Caroline (Lattice Science Publication, 2020)

Concrete paving blocks were first introduced in Holland to replace paver bricks which had become scarce due to the post-war building construction boom. In Kenya, paving blocks are used in construction of ...

Use of rice husks ash as partial replacement of cement in concrete paving blocks

Musau, Mwalimu. K.; Shitanda, Douglas; Githinji, Micheal; Mwende, Caroline (Journal of Engineering in Agriculture and the Environment, 2021-05-14)

Concrete paving blocks were first introduced in Holland to replace paver bricks which had become scarce due to the post-war building construction boom. In Kenya, paving blocks are used in construction of pavements in ...

USE of GUM Arabic as a Superplasticizer in SelfCompacting Concrete

Athman, Caroline M.; Abuodha, Silvester O.; Nyomboi, Timothy (Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd., 2018-04)

In this paper, Gum Arabic (GA) obtained from Acacia Senegal trees found in northern Kenya and most of other semi arid areas in Kenya was used in self compacting concrete as a superplasticizer. The research sought to ...

Use of Clove Carrot Mix in Cookies; A Way Towards Development of Low Caloric and High Fiber Cookies with Improved Organoleptic Properties

Noor-e-Huma; Akram, Nadia; Naz, Rabia (European International Journal of Science and Technology, 2020-07)

Cookies are an easy to go snacks with an increasing demand owing to their ease of consumption in this era of changed dietary patterns and sedentary life style. The effect of clove substitution in carrot flour cookie was ...