Browsing School of Biological and Physical Science by Title
Now showing items 860-879 of 933
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Symmetry conjugates and dynamical properties of the quantum Rabi model
(Cornell University, 2021)Symmetry transformations have proved useful in determining the algebraic structure and internal dynamical properties of physical systems. In the quantum Rabi model, invariance under parity symmetry transformation has been ... -
Symmetry Dependent Analytical Pseudopotential for Helium Atom
(2019-11-11)Electron-electron interaction is the origin of the many-body problems usually encountered in physics and chemistry. Helium atom and other two-electron systems are the simplest many-body systems in nature. The Schr¨odinger ... -
Synthesis and characterization of FSB@Fe3O4 composites and application in removal of indigo carmine dye from industrial wastewaters
(Springer, 2021)The syntheses and characterization of fish scale biochar magnetic composites (FSB@Fe3O4) and their applications in the removal of indigo carmine dye from effluents are described. Preparation of the fish scale biochar ... -
Synthesis of a pyrrolidine derivative of a carvotacetone and monoterpenes for anti-methicillin-resistant Staphylococcus aureus and anti-cryptococcal properties
(Taylor & Francis, 2022-05-03)Monoterpene derivatives are of great biological relevance in the pharmaceutical industry. In the present study, pyrrolidine deriva tive of a carvotacetone, 3-O-benzylcarvotacetone (1), and selected monoterpenes ... -
Synthesis of hydrophobic siliceous ferrierite by using pyridine and sodium fluoride
(Elsevier, 2013-11-15)We report for the first time, the successful synthesis of siliceous ferrierites with SiO2/Al2O3 = 138.8–324 by the hydrothermal treatment of aluminosilicate gel with the introduction of pyridine and easy-to-handle sodium ... -
Synthesis, characterization and application of acid and alkaline activated volcanic ash-based geopolymers for adsorptive remotion of cationic and anionic dyes from water
(Elsevier, 2021)In this work, two geopolymers were prepared by acid activation (GPAc) and alkaline activation (GPAl) approaches using volcanic ash (VA) as the precursor material. The geosorbents were characterized by X-ray diffraction ... -
Synthesis, structural assignments and antiinfective activities of 3-O-benzyl-carvotacetone and 3-hydroxy-2-isopropyl-5-methyl-p-benzoquinone
(Taylor & Francis, 2021-11)In an attempt to synthesize carvotacetone analogues, new 3-O-benzyl-carvotacetone (10) and previously reported 3-hydroxy-2-isopropyl-5-methyl-p-benzoquinone (11) were synthesized from piperitone (7). In this work, we ... -
The task of University Botanic Garden in education and plant conservation
(Botanic Gardens Conservation International, 2007)Biological conservation is a complex undertaking especially in the developing countries where large populace still relies on the forest products for their daily survival. Majority of these people live below the poverty ... -
Taxonomic Identification and Characterization of African Nightshades (Solanum L. Section Solanum)
(African Journal of Food, Agriculture, nutrition and developmen, 2007)African nightshades play an important role in meeting the nutritional needs of rural households, and are reported as being particularly rich in protein, vitamin A, iron and calcium. Nightshades are among three top priority ... -
Taxonomic Studies of Lippia javanica (Burm F.) Spreng. Complex (Verbenaceae) in East African Flora
(Asian Journal of Research in Botany, 2021)Lippia javanica complex is widely spread in Eastern, Central and Southern Africa; however, there exist a taxonomic conflict in the aforementioned species complex where morphologically similar forms of the species occur in ... -
Tea
(Oxford, 2003)This article focuses on the process of tea fermentation. Tea beverages are processed from the young tender shoots of Camellia sinensis L. O. Kuntze. Because of its subtle flavors and health benefits, tea has become the ... -
Tea (Camellia sinensis (L). O Kuntze) Variations in Yields, Yield Components and Leaf Nutrients Responses to Geographical Location and Nitrogen Fertiliser Rates in Kenya
(Maseno University, 2017)Tea provides income and employment to rural populations in many countries. Tea, grown in east and west of the Rift Valley, is the leading export commodity crop in Kenya. Variable responses among genotypes to different ... -
Tea Aroma
(Chapman and Hall, London, 1992)Tea is manufactured by a variety of processes producing a range of beverages from green, non-fermented tea through to black, fermented tea. The consumer acceptability of these beverages is largely dependent on the flavor ... -
Technology Options for the Built Environment in Kenya: Dye- Sensitized and Amorphous Silicon Photovoltaics for Application in NZE Buildings
(Bentham Science Publishers Ltd., 2017)Background The performance of a Dye-Sensitized Solar Module (DSSM) has been investigated under different outdoor air mass (AM), irradiance intensity and temperature conditions in Wajir, Kitui, Vihiga and Kajiado Counties ... -
Temperature-Dependent Elastic Constants of Substrates for Manufacture of Mems Devices
(Kabarak university, 2022)We present a comparative computational study of temperature-dependent elastic constants of silicon (Si), silicon carbide (SiC) and diamond as substrates that are commonly used in the manufacture of Micro-Electromechanical ... -
Tenax extraction for exploring rate-limiting factors in methyl-β-cyclodextrin enhanced anaerobic biodegradation of PAHs under denitrifying conditions in a red paddy...
(Elsevier, 2014-01-15)The effectiveness of anaerobic bioremediation systems for PAH-contaminated soil may be constrained by low contaminants bioaccessibility due to limited aqueous solubility and lack of suitable electron acceptors. Information ... -
A test for relative efficiency in the Smallholder Tea Sub-sector in Kenya
(Department of Agricultural Economics; University of Nairobi., 2001)Despite availability of tea growing technologies to all Kenya tea farmers, green leaf production in smallholder sub-sector remains low. Tea in Kenya is grown in the East of the Rift Valley and the West of the Rift Valley ... -
The Test of Entanglement of Polarization States of a Semi-Classical Optical Parametric Oscillator
(Science Publishing Group, 2017)We study the dynamical continuous variable entanglement in a semi-classical Optical parametric oscillator (OPO). The general time evolving photon polarization state vectors arising from exact analytical solutions of ... -
Testosterone positively associated with both male mating effort and paternal behavior in savanna baboons (Papio cynocephalus)
(Academic Press, 2013-03-31)Testosterone (T) is often positively associated with male sexual behavior and negatively associated with paternal care. These associations have primarily been demonstrated in species where investment in paternal care begins ... -
Tetracycline efflux pump in different Salmonella enterica isolated from diarrhea patients in two rural health centers in Western Kenya
(Infectious Diseases and Tropical Medicine Research Center, 2011)Tetracyclines (TCs) are a type of broad-spectrum bacteriostatic antibiotics used for treatment of a wide variety of infections. These antibiotics eventually reach terrestrial and aquatic environments via application of ...