Sommerfeld Coefficient for Hole- And Electron-Doped Cuprates
2019 KIBU Authors Michael Nakitare Waswa VIEW ON PUBLISHER SITE Abstract We have reflected on the ratio of specific heat and temperature (γorCel) of selected electron and hole doped highTccuprates. The electronic specific heat rises slowly and there is a sudden drop at the critical temperature and then it gradually decreases for temperatures above TC. […]
Internal Energy Of Hybrid S-Wave And D-Wave Pairing In Bismuth Cuprates
2020 KIBU Authors Michael Nakitare Waswa John W Makokha VIEW ON PUBLISHER SITE Abstract Bogoliubov-Valatin Transformation was used to diagonalize a Hybrid Hamiltonian for electron-electron and electron-cooper pair interaction. From the diagonalized Hamiltonian, an expression for ground state energy was obtained and used to determine internal energy of the system of Bismuth cuprates. It was […]
Effect of Internal Energy on Specific Heat of Cuprates using s-Wave and d-Wave Hybrid Model
2020 KIBU Authors Michael Nakitare Waswa John W Makokha VIEW ON PUBLISHER SITE Abstract The observation of an exponential decay of the specific heat at low temperatures shows that specific heat (Cv) of cuprates depend on the energy spectrum of a superconductor. This means that devising ways of varying internal energy of a system without […]
Natural radioactivity and external dose rates in tailing samples from Rosterman gold mine, Kakamega county, Kenya
2020 KIBU Authors John Wanjala Makokha Michael Nakitare Waswa VIEW ON PUBLISHER SITE Abstract In this article, documented results of natural radionuclide concentrations in tailings at Rosterman gold mine, Kakamega county, Kenya were evaluated. Thirty tailing samples from Rosterman gold mine were collected as per standard sampling procedures and were analyzed for 238U, 232Th and […]
An M – Stage Hierachical Group Testing Model for Estimating Multiple Traits in a Population
2020 KIBU Authors Sirengo L. John Away Shem VIEW ON PUBLISHER SITE Abstract Monitoring the presence or absence of a trait in a large population one – at – a – time is tedious, uneconomical and bound to errors. The remedy is to group the population into homogeneous groups and test each group for the […]
Estimation of Multiple Traits in an M – Stage Group Testing Model
2020 KIBU Authors John L. Sirengo Shem Aywa VIEW ON PUBLISHER SITE Abstract Multi – stage group testing design involves testing groups for the presence or absence of traits in a population and sequentially subdividing the groups into sub – groups. The sub – groups to be tested at a particular stage are based on […]
Utilizing K-Means Clustering in Understanding the Relationship between Absorbing Aerosol Index and Selected UV Absorbers over East Africa for the Period 2000 to 2014.
2021 KIBU Authors John W. Makokha Michael Nakitare Waswa VIEW ON PUBLISHER SITE Abstract Determination of UV absorbing aerosols such as dust and smoke can be inferred from the absorbing aerosol index (AAI) (also called UV Aerosol Index (UVAI). AAI positive values indicate the presence of selected pollutants among them Ozone (𝑂3) and Sulphur dioxide […]
Superconducting Transition Temperature within the Modified Bose-Fermi-Hubbard Model
2021 KIBU Authors Michael Nakitare Waswa John Wanjala Makokha VIEW ON PUBLISHER SITE Abstract Determining the conduction mechanism that would raise the TC of cuprate high temperature superconductors remains a puzzle. Here, we modify the existing Bose-Fermi-Hubbard model, diagonalize it using Bogoliubov-Valatin Transformation in order to determine the Transitional temperature, TC of hole doped-( and & electron-doped-( and ) […]
The Specific Heat of a Spin-Fluctuated Cuprate superconductors with strong electronic-Phonon Correlations
2021 KIBU Authors Micheal Waswa Nakitare VIEW ON PUBLISHER SITE Abstract Strongly correlated electronic models such as the Hubbard, are often used to describe the properties of cuprates. In most cases, the projected Hubbard operators are normally used to study this models. The Hubbard operators normally give rise to a specific kinematical interaction of electrons […]
Spin-Mediated Energy of Cuprate Superconductors
2021 KIBU Authors Michael Nakitare Waswa VIEW ON PUBLISHER SITE Abstract Spin fluctuation in strong correlated systems give rise to superconductivity in cuprate superconductors. The correlation effects in copper oxide (Cu02) layers give rise to collective excitations in high- cuprates. Here, the energy of electron doped Niodium Cellenium Copper Oxide (Nd2-xCexCuO4 -NCCO) and Praseodymium Cellenium […]