RP-School of Science and Technology: Recent submissions

Now showing items 21-40 of 112

On the Zero Divisor Graphs of a Class of Commutative Completely Primary Finite Rings

Adero, Walwenda Shadrack; Oduor, Owino Maurice (Journal of Advances in Mathematics, 2016-05)

Let R be a Completely Primary Finite Ring with a unique maximal ideal Z(R)) , satisfying (( ( )) (0) 1  n Z R and ( ( )) = (0). n Z R The structures of the units some classes of such rings have been ...
Characterization of codes of ideals of the polynomial ring f30 2 [x] mod ô€€€ x30 ô€€€ 1 for error control in computer applicatons

Olege, Fanuel; Oduor, Owino M.; Aywa, Shem; Okaka, A. Colleta (Journal of Advances in Mathematics, 2016-06)

The study of ideals in algebraic number system has contributed immensely in preserving the notion of unique factorization in rings of algebraic integers and in proving Fermat’s last Theorem. Recent research has revealed ...
On the Zero Divisor Graphs of Finite Rings in Which the Product of Any Two Zero Divisors Lies in the Coefficient Subring

Adero, Walwenda Shadrack; Ingado, Daisy; Oduor, Owino Maurice (Journal of Mathematics and Statistical Science, 2016)

Let r be a positive integer and 2 ≤ ∈k . Let ( ) kr k GR p p, be a Galois ring of order kr p and characteristic k p . Consider, ( ) kr k R GR p p U = ,⊕ where U is a finitely generated ( ) kr k GR p p, module. If Z R( ...
Perfect Repetition Codes of Ideals of the Polynomial Ring 2 [ ] ( 1) n n F x mod x − for Error Control In Computer Applicatons

Fanuel, Olege; Okaka, Akinyi Colleta; Oduor, Owino Maurice (Journal of Mathematics and Statistical Science, 2016)

The study of perfect codes has attracted a lot of interest among researchers in coding theory in view of the fact that many authors have indicated that this type of codes is rare. These codes are considered the best ...
On the Unit Groups of a Class of Total Quotient Rings of Characteristic p k with k ≥ 3

Wekesa, Wanambisi A.; Oduor, Owino M.; Aywa, S.; Onyango, Ojiema M. (International Journal of Algebra, 2017-01)

Let R be a commutative completely primary finite ring. The struc tures of the groups of units for certain classes of R have been determined. It is well known that completely primary finite rings play a crucial role in ...
On the Adjacency and Incidence matrices of the Zero divisor graphs of A class of the Square Radical Zero finite commutative Rings

Omondi, Ndago F.; Onyango, Ojiema M.; Oduor, Owino M. (International Journal of Pure and Applied Mathematics, 2018)

The characterization of the zero divisor graphs of commutative finite rings has attracted a lot of research for quite sometime, however not so much has been done concerning their Adjacency and Incidence matrices. In ...
Automorphisms of Zero Divisor Graphs of Cube Radical Zero Completely Primary Finite Rings

Mude, Lao Hussein; Oduor, Owino Maurice; Onyango, Ojiema Michael (Journal of Advances in Mathematics and Computer Science, 2020-12)

One of the most interesting areas of research that has attracted the attention of many scholars are theory of zero divisor graphs. Most recent research have focused on properties of zero divisor graphs with little attention ...
Unit Groups of Classes of Five Radical Zero Commutative Completely Primary Finite Rings

Were, Hezron Saka; Owino, Maurice Oduor; Gichuki, Moses Ndiritu (Journal of Advances in Mathematics and Computer Science, 2021)

In this paper, R is considered a completely primary finite ring and Z(R) is its subset of all zero divisors (including zero), forming a unique maximal ideal. We give a construction of R whose subset of zero divisors Z(R) ...
A Critical Look of USSD Technology Adoption and Benefits

Sigar, Kenneth Otula; Omari, Kebiro Jared (International Journal of Advanced Research in Computer Science, 2014-01)

This paper tries to explore benefits that the mobile Telephone users and telecommunication stakeholders can derive from an existing mobile technology called unstructured supplementary service data (USSD).Usage of Mobile ...
Investigating ATM System Accessibility for People with Visual Impairments

Omari, Okebiro Jared; Omariba, Bosire Zachary (IOSR Journal of Computer Engineering (IOSR-JCE), 2013-11)

The aim of this paper is to draw attention for the evaluation of the accessibility and usability of Automated Teller Machine (ATM) systems from the point of view of visually impaired persons. It suggests that there is ...
Phytochemistry and antibacterial activity of extracts from medicinal plant Olea africana

Kemboi, Douglas; Kiplimo, Joyce Jepkorir; Chirchir, Denis (African Journal of Pharmacy and Pharmacology, 2016-03-15)

Increase in prevalence of resistant microorganisms especially to synthetic drugs, has necessitated the need to search for new bioactive compounds having natural origin. Phytochemical investigation of Olea africana extracts ...
Adsorption of anionic dye (Reactive black 5) using macadamia seed Husks: Kinetics and equilibrium studies

Felista, Mutunga M.; Wanyonyi, Wycliffe C.; Ongera, Gilbert (Scientific African, 2020-01)

Adsorption of Reactive black 5 dye currently used in textile industries was investigated using Macadamia Seed Husks (MSH) from a local Macadamia nut processing industry. Adsorption increased with increase in contact time, ...
A Quantitative Analytical Chemistry Research-based Experiment Involving Comparative Analysis of Amaranth Grain Oils Extracted from Embu and Meru Districts in Kenya

Rugutt, Joseph K.; Okoth, Kevin Otieno; Wanjau, Ruth N.; Gikonyo, Nicholas K.; Machocho, Alex; Rugutt, Kipgeno J.; Obel, Millie Chepkemoi; Mibei, Erick (The Chemical Educator, 2014)

: Amaranthus cruentus grains from Meru and Nyeri regions in Kenya were milled and oil extracted by the Bligh and Dyer method. Samples of oil from grains in the same regions extracted by cold pressing method were obtained ...
Effects of essential oils of lemon grass, Cymbopogon citratus and the Mexican marigold, Tagetes minuta on mortality and oviposition in adult sandflies, Phlebotomus duboscqi

Ngeiywa, Moses; Njagi, Peter G. N.; Mulaa, Margaret; Ingonga, Johnstone; Nyamwamu, Lydia B.; Ombati, Cyprian; Ngumbi, Philip; Kimutai, Albert (International Journal of Biomedical Research, 2015)

The efficacy of the essential oils of Cymbopogon citratus and Tagetes minuta in causing mortality in adults of the sandfly Phlebotomus duboscqi was tested in a laboratory bioassay. The effect of the oils on oviposition ...
Movement Patterns And Home Range Sizes Of The Rothschild’s Giraffes (Giraffa camelopardalis Rothschildii) Translocated To Ruma National Park, Kenya.

Caroline, Anyango Dolphine; Adhiambo, Were - Kogogo Pamella Jael (The International Journal Of Engineering And Science (IJES), 2013-07)

The need for management of small, wild populations has been given limited attention. The Rothschild’s giraffe is poorly represented in East Africa, therefore, it is important that its populations and environments should ...
US-Africa Collaboration in a Chemical Education Project Involving Analysis of Amaranthus Grain Oil from Selected Agro-Ecological Zones in Kenya

Rugutt, Joseph K.; Okoth, Kevin Otieno; Wanjau, Ruth N.; Gikonyo, Nicholas K.; Machocho, Alex; Rugutt, Kipgeno J.; Rykhlya, Kristina Y.; Harris, Keil B.; Wilson, Katie R. (Chem. Educator, 2014)

Amaranthus is a cosmopolitan genus of annual and perennial plants. Worldwide, amaranths are cereals, leaf vegetables, or ornamental plants. Two African species of amaranthus grain; Amaranthus cruentus and Amaranthus ...
US-Africa Collaboration in Guided Inquiry Synthesis and Characterization of the “Frustrated” Amino Acid-Based Calixarene Molecules

Rugut, Joseph K.; Rugutt, Kipgeno J.; Koske, Julius; Chirchir, Denis; Cheruiyot, Gilbert; Koech, Joel; Mibei, Erick; Obel, Millie Chepkemoi; Bii, Christine Chemutai; Rop, Ronald (Chem. Educator, 2010-09-23)

The Department of Chemistry at Missouri State University-West Plains (MSU-WP) is internationalizing the existing research activities by initiating a collaborative Kenya-U.S. Chiral Science (chiroscience) project. The ...
Investigating Challenges and Interventions in the Implementation of Libraries Strategic Plans in Selected Public University Libraries in Kenya

Harrison, Janet Nankui; Otike, Japhet; Amoth, Duncan (International Journal of Multidisciplinary Research & Innovation, 2022)

Strategic plan provides different avenues for libraries to make options that give emphasis to their relevance in a competitive environment and to create sustainable benefits. However, university libraries that have ...
Detection and typing of Human Papillomavirus in urine from patients attending a sexually transmitted infections clinic in Nairobi County, Kenya

Langat, Hillary K.; Ongus, Juliette R.; Kombich, Janeth C.; Omire, Agnes; Baliach, Caroline C.; Kerosi, Danvas O.; Lihana, Raphael W.; Lwembe, Raphael M. (Journal of Biology, Agriculture and Healthcare, 2015)

Human papillomavirus (HPV) is a common sexually transmitted infection (STI) that has been etiologically linked to cervical cancer. Different types of samples can be used for cervical screening, including Pap test or ...
Prevalence and genetic diversity of rotavirus infection in children with acute gastroenteritis in a hospital setting, Nairobi Kenya in post vaccination era: a cross-sectional study

Agutu, Mary-Theresa; Ongus, Julliette; Kombich, Janeth; Kamenwa, Rose; Nyangao, James; Kagira, John; Ogutu, Adelaide Ayoyi; Bitek, Austine (The Pan African Medical Journal., 2017-01-24)

Introduction: Rotavirus is the leading cause of severe diarrhoea among infants and young children. Each year more than 611 000 children die from rotavirus gastroenteritis, and two million are hospitalized, worldwide. In ...

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