Department of Physical Sciences
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©Karatina University
Recent Submissions
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Adsorption evaluation of selected heavy metal ions by aminofunctionalized low-cost adsorbents. A Review
(Global Scientific, 2021-07)Presence of heavy metals in drinking water has significant adverse effects on human wellbeing due to their toxicity nature. Several techniques have been employed to reduce their concentration to permissible levels. In ... -
A Gold Nanoparticle-Based Colorimetric Probe for Detection of Gibberellic Acid Exuded by Ralstonia solanacearum Pathogen in Tomato (Solanum lycopersicum L.)
(International Journal of Horticultural Science and Technology, 2021-01-27)We report a simple colorimetric probe based on gold nanoparticles (AuNPs) for detecting Ralstonia solanacearum. The AuNPs were synthesized through reduction with citrate ion and characterized by ultraviolet-visible ... -
To Investigate the Effect of Microwaves Irradiated Water and Feeds On The Broilers.
(UGC Care listed, 2020-02)In electromagnetic spectrum, microwaves radiation spans a range from 300 MHz to 300 GHz. These radiationshave been used in many devices that are used by humanbeings.They may be very harmful for living organisms. Bad effects ... -
Hydromagnetic Turbulent Flow Between Two Parallel Infinite Plates
(Science Journal of Applied Mathematics and Statistics, 2017)In this study we shall investigate hydromagnetic turbulent unsteady flow of an incompressible electrically conducting fluid between two parallel infinite plates. The flow variables such as velocity and thermodynamic ... -
Anti-Pyretic Properties of Methanolic Bark Extracts of Terminalia brownii in Wistar Rats ( Rattus novegicus )
(J Pharmacogn Nat Prod, an open access journal, 2016)The conventional drugs used to manage fever are usually not affordable, not easily available and have adverse side effects. Alternative therapeutic agents, like medicinal plant derivatives, should therefore be developed ... -
Anti-Pyretic Properties of Methanolic Bark Extracts of Terminalia brownii in Wistar Rats (Rattus novegicus)
(Journal of oJ Pharmacognosy & Natural Products, 2016)The conventional drugs used to manage fever are usually not affordable, not easily available and have adverse side effects. Alternative therapeutic agents, like medicinal plant derivatives, should therefore be developed ... -
Validation of Popular Models used in the Analysis of Specific Activities of Primordial Radionuclides in Environmemtal Samples trough 1-D Analytical Modeling.
(Radiation Enviroment and Medicine, 2019) -
Water Resources and Management under Increasing Urban Demography: A Kenyan Perspective—A Review
(Journal of Water Resource and Protection, 2018)The United Nations classifies Kenya as a water-scarce country since it has less than 1000 m3 per capita of renewable freshwater supplies. Numerous factors including global warming, contamination of drinking water, and a ... -
Analysis of the Impact of Cross-sectional Data Discrepancies on the Effectiveness of Radiation Shielding Design Using Monte Carlo Codes
(International Journal of Physics, 2019)The effect of cross-sectional data discrepancies on the effectiveness of radiation shielding design has been investigated in this paper. The MCNP code with cross-sections from ENDF/B-V and ENDF/B-VII has been used to ... -
Evaluation of In vivo Toxicity of Methanolic Leaf Extract of Vernonia lasiopus (O. Hoffman)
(Journal of Pharmacognosy & Natural Products, 2017)The main objective of this study was to evaluate the in vivo toxicity of methanolic leaf extract of Vernonia lasiopus. To provide information on the safety of V. lasiopus, we evaluated its acute and sub-chronic toxicity ... -
Critical temperature and condensate fraction of a bose – einstein condensate trapped in a finite volume
(Centre for Info Bio Technology, 2014)Bose - Einstein Condensation, BEC, of an ideal gas is investigated for a finite number of particles trapped in a harmonic potential. The values of the critical temperature for Rb-87, its condensate fraction and the energy ... -
Anti-inflammatory properties of methanolic bark extracts of terminalia Brownii in wistar albino rats
(Innovare academic sciences pvt ltd., 2016-06) -
Reproducibility of (n,γ) gamma ray spectrum in Pb under different ENDF/B releases
(Elsevier, 2016-02)Radiative capture reactions are of interest in shielding design and other fundamental research. In this study the reproducibility of (n,γ) reactions in Pb when cross-section data from different ENDF/B releases are used in ... -
The Challenges of Using Lesson Plan Formats for Effective Teaching of Chemistry in Kisii District, Kenya
(Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS), 2012)The study sought to review the state of the use of lesson plans by teachers in teaching Chemistry in six secondary school s of Mosocho Division of Kisii District, namely Cardinal Otunga, Mosocho Academy, Raganga, Kioge, ... -
Evaluation of candidate materials for SCWR turbine and balance of plant shielding
(Progress in Nuclear Energy; ScienceDirect, 2015-03)Since the coolant leaving the SCWR core contains an assortment of radioisotopes, it is necessary to identify appropriate materials for shielding ex-core components. Photon attenuation characteristics, photo-neutron production ... -
Developments of oil-free Bakelite resistive plate chambers for particle physics experiments
(Journal of Instrumentation; IOP Publishing, 2014-07)In this paper, we sumarized a Bakelite Resistive Plate Chamber (RPC) with non-oil surface treatment. This type of RPC has been installed and run smoothly in BESIII Muon identification system and Daya Bay cosmic Muon veto ... -
Simulation of (16)O (n, p) (16)N reaction rate and nitrogen-16 inventory in a high performance light water reactor with one pass core
(Applied Radiation and Isotopes; Elsevier, 2014-12)The rate of activation of the isotope (16)O to (16)N in a typical HPLWR one pass concept was calculated using MCNP code. A mathematical model was used to track the inventory of the radioisotope (16)N in a unit mass of ... -
Investigation of photoneutron and capture gamma-ray production in Pb and W under irradiation from 16N decay radiation
(Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms; Elsevier, 2015-09)Lead and tungsten are potential alternative materials for shielding reactor ex-core components with high 16N activity when available space limits application of concrete. Since the two materials are vulnerable to photonuclear ... -
Design and optimization of HPLWR high pressure Turbine gamma ray shield
(Nuclear Engineering and Design; Elsevier, 2015-04)This work proposes the optimum gamma ray shield thickness around the HPLWR high pressure turbine for different occupancy periods in the turbine building. Monte Carlo method was employed in the design process and only ... -
New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay
(PHYSICAL REVIEW LETTERS, 2015-05)We report a new measurement of electron antineutrino disappearance using the fully-constructed Daya Bay Reactor Neutrino Experiment. The final two of eight antineutrino detectors were installed in the summer of 2012. Including ...
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