School of Biological, Physical, Mathematics & Actuarial Sciences: Recent submissions
Now showing items 81-100 of 253
-
Nonzero Lie Brackets of Third Order Nonlinear Ordinary Differential Equation
(ResearchGate, 2018-06)Lie symmetry analysis of Ordinary Differential Equation can be used to obtain exact solution of the equation of the form F (x, y, y’ y’’ y’’’) = 0. In this paper we use Lie Symmetry analysis approach to obtain the nonzero ... -
Drug and Substance Use and Its Predictors among the Youth in Nyamira Sub County, Nyamira
(www.strategicjournals.com, 2018-11-11)Substance and drug use is one of the emerging public health problems among the youth in Kenya. Moreover, it is associated with a myriad of medical effects including psychiatric problems, organ failures in addition to ... -
Norm-Attainability and Range-Kernel Orthogonality of Elementary Operators
(Communications in Advanced Mathematical Sciences, 12/24/2018)Various aspects of elementary operators have been characterized by many mathematicians. In this paper, we consider norm-attainability and orthogonality of these operators in Banach spaces. Characterizations and generalizations ... -
Lie Symmetry Analysis of Modified Diffusive Predator-prey Competition System of Equations
(International Journal of Multidisciplinary Sciences and Engineering, 2020)In this paper, a nonlinear fourth order evolution equation is investigated by the Lie symmetry analysis approach. All the geometric vector fields and the Lie groups of the evolution equation are obtained. Finally, the ... -
On Norm Inequalities and Orthogonality of Commutators of Derivations
(Arxvi, 2019-03-25) -
Properties of Spectrally Bounded Compact Elementary Operators
(DOI: 10.47443/cm.2021.0012, 2021-03-31)Spectrally bounded compact elementary operators on dense irreducible subalgebras of C ∗ -algebras are characterized. Also, it is shown that left multiplications, right multiplications, generalized derivations and basic ... -
On Centre Properties of Irreducible Subalgebras of Compact Elementary Operators
(doi:10.30538/psrp-oma2020.0065, 2020)In this paper, we characterize the centre of dense irreducible subalgebras of compact elementary operators that are spectrally bounded. We show that the centre is a unital, irreducible and commutative C∗ -subalgebra. ... -
Effects of Colchicine Treatments on Chromosome Doubling in Three Diploid Cotton Species
(Journal of Multidisciplinary Engineering Science and Technology, 2017-04-04)Colchicine has been used to induce chromosome doubling in plant species. Diploid cotton species have inherited desirable genes that are resistant to biotic and abiotic stresses and also possesses useful fiber quality traits, ... -
Simple Sequence Repeat (SSR) Genetic Linkage Map of D Genome Diploid Cotton Derived from an Interspecific Cross between Gossypium davidsonii and Gossypium klotzschianum
(Multidisciplinary Digital Publishing Institute, 2018-01-11)The challenge in tetraploid cotton cultivars is the narrow genetic base and therefore, the bottleneck is how to obtain interspecific hybrids and introduce the germplasm directly from wild cotton to elite cultivars. ... -
The Role of Bio-Extracted Reduced Graphene Oxide in the Crystallization Kinetics of Chitosan Bio-Polymer
(Scientific research and community, 2021-01-29)Carbon nanomaterials have recently attracted wide scientific applications due to their tunable properties. These novel materials act as best fillers that can provide substantial benefits due to their high strength, thermal ... -
Mathematical Modelling of the COVID-19 Pandemic with Demographic Effects
(Springer Nature, 2021-03-17)In this paper, a latent infection susceptible–exposed–infectious–recovered model with demographic efects is used to understand the dynamics of the COVID-19 pandemics. We calculate the basic reproduction number (R0) by ... -
Magnetocaloric Effect and Sign Reversal of Magnetic Entropy Change Across the Spin Reorientation Temperature in R3Fe5O12 (R = Gd, Dy)
(Elsevier, 2020-04-15)The cubic structure with space group Ia3‾d for Gd3Fe5O12 and Dy3Fe5O12 are successfully synthesized and the magnetic behaviors are studied in details. The dc magnetization measurements show that an obvious negative ... -
Spin Reorientation, Normal and Inverse Magnetocaloric Effects in Heavy Rare-Earth Iron Garnets
(Elsevier, 2020-08-01)Experiments for heavy rare-earth iron garnets Ho3Fe5O12 and Er3Fe5O12 show a compensation effect characterized by a near zero magnetization at 134 K and 80 K, respectively. The magnetic entropy change calculated according ... -
High-Density Linkage Map Construction and Mapping of Salt-Tolerant QTLs at Seedling Stage in Upland Cotton Using Genotyping by Sequencing (GBS)
(Multidisciplinary Digital Publishing Institute, 2017-11-05)Over 6% of agricultural land is affected by salinity. It is becoming obligatory to use saline soils, so growing salt-tolerant plants is a priority. To gain an understanding of the genetic basis of upland cotton tolerance ... -
Qtl Mapping for Salt Tolerance in an Intra-Specific Upland Cotton at Seedling Stage Using Ssr Markers
(ESci Journals, 2017)Cotton is a moderately salt-tolerant crop, but its salt tolerance threshold is not more than 7.7 ds•m−1. The seedling stage of cotton is the highly sensitive to salinity and the effects can be quantified by measuring ... -
GBS Mapping and Analysis of Genes Conserved between Gossypium tomentosum and Gossypium hirsutum Cotton Cultivars that Respond to Drought Stress at the Seedling Stage of the BC2F2 Generation
(Multidisciplinary Digital Publishing Institute, 2018-05-30)Cotton production is on the decline due to ever-changing environmental conditions. Drought and salinity stress contribute to over 30% of total loss in cotton production, the situation has worsened more due to the narrow ... -
Climbing Up the Hills: Expansion of Agriculture around the Ruma National Park, Kenya
(International Journal of Remote Sensing, 2019-04-05)A major factor driving changes in land use and land cover (LULC) is the human population growth associated with an expanded agricultural production. In the Lambwe valley in Homabay County, Kenya, the most important reason ... -
Recent Advances on Mercury Speciation in Aquatic Ecosystems, Health Effects and Analytical Techniques
(SCIENCEDOMAIN international, 2017-02-18)Elemental mercury is not as poisonous as its congeners such as methyl mercury and dimethyl mercury, especially at trace levels. However, understanding the speciation mechanisms of mercury in aquatic ecosystems ... -
Nonlinear H∞ Guidance Design for Missile against Maneuvering Target
(Science Domain, 2017-05-01)A new guidance law is derived for missile against maneuvering target by adopting nonlinear H∞ control theory. The guidance law is based on three dimension (3D) nonlinear kinematics described by modified polar ... -
Fine Tuning the Microenvironment of [Euw10o36]9- Anion Leads to the Large Enhancement of the Red Light Luminescence
(North-Holland, 2018-04-01)The polyoxometalate (POM) anion of europium (III) decatungstate [EuW10O36]9- exhibits great luminescence quantum yields of approximately 67% but suffers reduced red light emissions that are due to the low 5D0→7F2 transmissions. ...
