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Browsing RP-Department of Mathematics, Actuarial and Physical Sciences by Title

Now showing items 1-20 of 95

Adsorption of Recalcitrant Malachite Green Dye from Aqueous Solution Using Cabbage Waste powder

Wekoye, Joan N.; Wanyonyi, Wycliffe C.; Wangila, Phanice T. (AIP Publishing, 2023-11-08)

Malachite green (MG) dye is a toxic cationic, azo soluble organic dye blamed for grievous health complications and aquatic pollution. The present study assesses the potential of cabbage waste powder (CWP) in the adsorptive ...
Adsorption of toxic crystal violet dye using coffee husks: Equilibrium, kinetics and thermodynamics study

Cheruiyot, Gilbert K; Wanyonyi, Wycliffe C; Kiplimo, Joyce J; Maina, Esther N (Scientific African, 2019)

Crystal violet (CV) dye is a water-soluble, toxic, recalcitrant organic dye that causes se- vere health problems and environment pollution. The current study assesses the potential of Waste Coffee Husks (WCH) in adsorption ...
Adsorptive removal of hazardous crystal violet dye form aqueous solution using Rhizophora mucronata stem-barks: Equilibrium and kinetics studies

Oloo, Chrispine M.; Onyari, John M.; Wanyonyi, Wycliffe C.; Wabomba, John N.; Muinde, Veronica M. (Environmental Chemistry and Ecotoxicology, 2020-05-08)

Adsorption of crystal violet (CV) dye from aqueous solution using dried bark powder of mangrove species Rhizophora mucronata was studied. Characterization of adsorbent was done using FTIR and SEM. Batch experiment was ...
Alkaliphilic Enzymes and Their Application in Novel Leather Processing Technology for Next-Generation Tanneries

Wanyonyi, Wycliffe C.; Mulaa, Francis J. (Alkaliphiles in Biotechnology, 2019)

Leather manufacturing involves conversion of raw skin and hides into leather (stable material) through series of mechanical and chemical operations. The leather industry has attracted public outcry due to severe environmental ...
An almost unbiased estimator in group testing with errors in inspection

Langat, Erick K; Tonui, Benard C; Langat, Reuben C (American journal of theoretical and applied statistics, 2016-05-25)

The idea of pooling samples into pools as a cost effective method of screening individuals for the presence of a disease in a large population is discussed. Group testing was designed to reduce diagnostic cost. Testing ...
Amino acid Composition of Gelatin Extracted from the Scales of Different Marine Fish Species in Kenya

Mureithi, Ann Wangari; Onyari, John Mmari; Wanyonyi, Wycliffe Chisutia; Mulaa, Francis Jackim (IJSRSET, 2017)

Gelatin in this study was extracted by an enzymatic process from the scales of three marine fish species; Lutjanus sebea (Red snapper), Lethrinus harak (Black spot emperor) and Scalus ghobban (Blue barred parrot ...
Analysis of Adjacency, Laplacian and Distance Matrices of Zero Divisor Graphs of 4-Radical Zero Completely Primary Finite Rings

Ndago, Frank Omondi; Oduor, Maurice Owino; Ojiema, Michael Onyango (Science Mundi, 2024-08-06)

This study is an extension of our study on matrices of zero divisor graphs of classes of 3-radical zero completely primary finite rings. It focusses on Matrices of a class of finite rings R whose subset of the zero ...
Antimicrobial Activity of Euclea divinorum Hern (Ebenaceae) Leaves, Tender Stems, Root Bark and an Herbal Toothpaste Formulated from Its Ethanolic Root Bark Extract

Mbabazi, Immaculate; Wangila, Phanice; K’Owino, Isaac O (2020-08)

Aim: Euclea divinorum Hern (Ebenaceae) is a treasured East African medicinal plant which has a long use in the management of dental caries. However, there are few reports on the antimicrobial activity of its different ...
Assessment of lead accumulation on soils and vegetables grown along major roads within Nakuru town

Kiplimo, Joyce; Mule, Shadrack; Mogusu, Sylvia (Journal of African research and development, 2016-07-10)

Lead has been found to be toxic to human beings even at low concentrations due to its negative effects on IQ, impaired hearing, behavioral problems (aggression) and delayed bone growth alongside causing death in some cases. ...
Assessment of natural radioactivity levels in tailings from Lurambi rosterman gold mine, Kakamega county Kenya.

Wanyama, Conrad K; Makokha, John W; Masinde, Fred W (Global scientific journals, 2020-07-07)

Thirty samples were analyzed in the assessment of the activity concentration levels associated with naturally occurring radionuclides materials from Rosterman gold mine. Activity concentration with regard to gamma ray ...
Automorphisms of the unit groups of power four radical zero finite commutative completely rimary Rings

Onyango, Ojiema M; Oduor, Owino M; Oleche, Odhiambo P (Pure Mathematical Sciences, 2016)

Let G be a group. The groups G 0 for which G is an automorphism group have not been fully characterized. Suppose R is a class of power four radical zero finite commutative completely primary ring and J its Jacobson ...
Automorphisms of the Unit Groups of Square Radical Zero Finite Commutative Completely Primary Rings

Ojiema, Onyango M.; Owino, Maurice O; Odhiambo, Oleche P (ijpam.eu, 2016-05)

Let G be a group. The groups G ′ for which G is an automorphism group have not been fully characterized. Suppose R is a Completely Primary finite Ring with Jacobson Radical J such that J 2 = (0). In this case, the ...
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 ...
Automorphisms of Zero Divisor Graphs of Galois Rings

Mude, Hussein L; Owino, Maurice O; Ojiema, Michael O (2019)

Let R be a commutative finite ring with unity and let Z(R) be its set of zero divisors. The study of R in which the subset of zero divi sors forms a unique maximal ideal has been extensively done yielding interesting and ...
Automorphisms of Zero Divisor Graphs of Square Radical Zero Commutative Unital Finite Rings

Mude, Lao Hussein; Oduor, Owino Maurice; Onyango, Ojiema Michael (Journal of Advances in Mathematics, 2020)

There has been extensive research on the structure of zero divisors and units of commutative finite rings. However, the classification of such rings via a well known structure of zero divisors has not been done in general. ...
Biodegradation and Detoxification of Malachite Green Dye Using Novel Enzymes from Bacillus cereus Strain KM201428: Kinetic and Metabolite Analysis

Wanyonyi, Wycliffe Chisutia; Onyari, John Mmari; Shiundu, Paul Mwanza; Mulaa, Jackim (Energy Procedia, 2017-04)

Enzyme based degradation of organic pollutants is a promising detoxifying approach due to the promiscuous nature of the enzyme, efficiency, cost effective and ecofriendly. In the present study, we have carried out detailed ...
A boundary corrected non-parametric regression estimator for finite population total

Langat, Reuben C; Odhiambo, Romanus O; Orwa, George O (Canadian Center of Science and Education, 2019-04-27)

This study explores the estimation of finite population total. For many years design-based approach dominated the scene in statistical inference in sample surveys. The scenario has since changed with emergence of the other ...
Boundedness of Sequentially Generated Measurable Products: A Neighborhood Approach

Olwamba, Levi Otanga (Journal of Advances in Mathematics and Computer Science, 2024-04-27)

Many studies have been done on products of measurable sets. The most recent results highlight the properties of tensor products expressed as matrix products. Therefore, this study builds on existing research on product of ...
The Causal Relationship between Type 2 Diabetes Mellitus and Ovarian Cancer: Two-Sample Mendelian randomization

Langat, Kipkirui V; Lang’at, Reuben C; Okango, Ayubu A (Researchgate, 2021-06-29)

Aims: This research aimed at determining the causal relationship between type 2 diabetes mellitus (T2DM) and ovarian cancer using two-sample Mendelian randomization technique. This is because there is an assumption that ...
Cellulose Nanofibrils from Sugarcane Bagasse as a Reinforcing Element in Polyvinyl Alcohol Composite Films for Food Packaging

Otenda, Brian Victor; Karerua, Patrick Gachoki; Madivoli, Edwin Shigwenya; Maina, Ernest Gachui; Wanakai, Sammy Indire; Wanyonyi, Wycliffe Chisutia (Journal of Natural Fibers, 2022)

Due to a high aspect ratio and enhanced mechanical strength, cellulose nanofibrils can be used as reinforcing elements in biocomposite films. In this study, cellulose nanofibrils were isolated from sugarcane bagasse using ...

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