Parcourir School of Science par auteur "1f799f42-57a4-4d8d-b1a5-c11332ea026a"
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20 G bps Pulse Amplitude Modulation (PAM) Format for Capacity Upgrade in Optical Communications
Kipkoech, Yegon; et. al... (American Journal of Optics and Photonics., 2019)In the fast growing society, communication is broadening so rapidly such that internet users need to access information rapidly and amount of data flowing through internet is very huge. Various ... -
Ab initio insights into Graphene-Zirconium disulfide/diselenide heterostructure as electrode material for alkali-ion batteries
King’ori, Gladys W.; et. al... (Surfaces and interfaces, 2021)In the search for an energy storage medium with higher electronic conductivity, rate performance and moderate volume expansion, van der Waals heterostructures are a promising alternative. Herein, the potential of graphene ... -
Allelopathic Potential of Centella asiatica Leaves on Seed Germination and Seedling Growth of Selected Field Crops
Kemboi, M. K.; et. al... (Africa Environmental Review, 2022)Centellaasiatica is a small, faintly aromatic, greenish-yellow leafy ubiquitous herbaceous plant of the Apiaceae family. It is a member of a weed community termed Hydrocotylo-Centelletum asiaticae association. Losses due ... -
Anti-Bacterial Activities of Green Synthesized ZnO and CuO Nanoparticles from Leaf Extracts of Warburgia ugandensis
Njenga, Lemeitaron; et al. (American Journal of Nano Research and Applications, 2023-07)This work reports for the first time the green synthesis of zinc oxide nanoparticles (ZnO NPs) and copper oxide nanoparticles (CuO NPs) using leaf extracts of Warburgia ugandensis as encapsulating, stabilizing, and reducing ... -
The antimicrobial activity of the leaves of Urtica massaica on Staphylococcus aureus, Escherichia coli.
Kipruto, Allan; et. al... (Journal of Medicinal Plants Studies, 2019)Medicinal plants have great potential for providing novel drug leads with novel mechanism of action. The present study aimed at determining the antimicrobial activityand phytochemical profile of methanol and ... -
Bioefficay of Chrysanthemum cinerariifolium and Allium sativum Oil Extracts against Sitophilus zeamais
Lutta, S.; et. al... (AER Journal, 2020)1 AER Journal Volume 4, Issue 1, pp. 1-9, December, 2020 RESEARCH ARTICLE Available Online at http://www.aer-journal.info ISSN: 1727-8341 Bioefficay of Chrysanthemum cinerariifolium and Allium sativum Oil Extracts ... -
Breeding Grain Sorghum for Tolerance to Aluminium Toxicity
Too, E. J.; et. al.. (AER Journal, 2020)Aluminium (Al) toxicity is a common problem in acid soils where sorghum (Sorghum bicolor (L.) Moench) is grown. It contributes to grain yield reduction of between 30-40 % in sorghum and other cereals. Al interferes with ... -
Chemical compositions of fresh volatiles aromas of some Kenyan Ocimum species
Ngari, Ann G; et.al... (Journal of Pharmacognosy and Phytochemistry, 2019)Plants of genus Ocimum have unique aromas hence the likelihood of chemical profiles of their fresh volatiles being different. Gas Chromatography-Mass Spectrometry (GC-MS) analysis of head space volatiles of fresh aerial ... -
Computation of the Expectation Value of the Electron – Phonon and Coulomb Interaction Hamiltonian using Second Quantization and Many Body Techniques
Ingosi, A.; et al. (International Journal of Research and Analytical Reviews (IJRAR), 2020-12)The problem of the strong electron coupling in the theory of superconductivity has been discussed in many studies on the basis of electron and phonon spectral functions. For the rationale of investigating the effect of ... -
Concurrent Infections Among Pyretic Children Seeking Treatment at Alupe Sub County Hospital, Busia County, Kenya
Mwamburi, Lizzy A.; et al. (European Journal of Applied Sciences, 2023-10)Fever is a frequently occurring medical symptom and may result from many divergent conditions ranging from mild to potentially serious. Children typically get high and fast – occurring fevers, reflecting the effects of the ... -
Design of simultaneous multicolor coherent light generation in a single MgO:PPLN bulk crystal
Choge, Dismas K.; et al. (Journal of the Optical Society of America B, 2020-11)We report on simultaneous sum-frequency mixing and doubling of C-band and 980 nm laser sources using a single segmented periodically poled lithium niobate (PPLN) crystal in a single-pass configuration. Our theoretical analysis ... -
Detecting Remote Access Network Attacks Using Supervised Machine Learning Method
Wekesa, Cyrus; et. al... (MECS Press, 2023)Remote access technologies encrypt data to enforce policies and ensure protection. Attackers leverage such techniques to launch carefully crafted evasion attacks introducing malware and other unwanted traffic to the ... -
Distribution and Morphometric Characteristics of Domesticated Rabbit Breeds in North Rift and Western Regions, Kenya
Sergon, P. C.; et al. (African Environmental Review Journal, 2022-06)Rabbits (Otyctolagus cuniculus) occur throughout the world with their breeds distinctively identified phenotypically by coat color, body size and shape. The common rabbit breeds in Kenya are New Zealand White, Californian ... -
Effect of Aflatoxin Laced Diet on the Utero-Fallopian Tube Histology in New Zealand White Rabbits
Kitilit, K. Jackson; et. al... (African Journal of Education, Science and Technology, 2022-06-01)Fungi are extremely adaptable organisms with the capacity to metabolize a large variety of substrates over a wide range of environmental conditions and are produced only under aerobic conditions. Aflatoxin contamination ... -
Effects of diet on the nutritional composition of the desert locust Schistocerca gregaria (Orthoptera: Acrididae)
Mmbone, Sylvia; et al. (African Journal of Tropical Entomology Research, 2023-03)The desert locusts, Schistocerca gregaria have a great history of being used as food. They are rich in proteins, minerals, fibre, and fats. An experiment was conducted to determine the effects of diet on the nutritional ... -
Epstein barr virus IgG and EBER-1 in Burkitt’s lymphoma children at a referral hospital in western Kenya
Ndede, Isaac; et. al... (Pan African Medical Journal, 2019)Burkitt's lymphoma (BL) is a frequent childhood B cell non-Hodgkin's lymphoma (NHL) in equatorial Africa associated with infections. Chronic Epstein Barr virus (EBV) infections can lead to host immune stimulation that ... -
Evaluation of In vivo and In vitro Antioxidant properties of the Ethanol Leaf Extract of Culcasia falcifolia
Portia, A Gracelyn; et. al... (Journal of Biomedical and Pharmaceutical Sciences, 2018)Objective: To evaluate the in vivo antioxidant potential of the ethanol leaf extract of Culcasia falcifolia against Pentylenetetrazole induced oxidative stress as well as its in vitro antioxidant effect. Method: The ... -
Evaluation of the antimicrobial activity and safety of Rhus vulgaris (Anacardiaceae) extracts
Mutuku, Angela; et. al... (BMC Complementary Medicine and Therapies, 2020)Background: Medicinal plants have been used in the treatment of various ailments in most developing countries. Oral infections are the most prevalent diseases in man. The Rhus family has been found to have antimicrobial ... -
Field Accumulation in Selected Heavy Metal Ions and Associated Health Risks in Irrigation Water, Soil and Tomatoes Collected from Homa Hills, Homabay County, Kenya
Akenga, Teresa; et. al. (Africa Environmental Review, 2022)Accumulation of metal ions in irrigation water and soils can lead to uptake by food crops. The accumulated heavy metals when ingested pose a threat to human health. The current study intends to assess potential health ... -
Frequency stability characterization: DFB laser and Raman pump performance on a distributed clock signal over 24.69 km fiber
Osiemo, D. M.; et al. (Journal of the Optical Society of America, 2020-07)Distribution of timing and frequency signals in a fast-changing world requires unprecedented levels of stability for characterization.Transfer of frequency references over long distance without introducing any additional ...