Browsing College of Biological and Physical Sciences (CBPS) by Title
Now showing items 1-20 of 29
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African Journal of Science and Technology
(College of Biological and Physical Sciences, 2001) -
Angle resolved photoemission study of surface states on the Pt(997) vicinal surface
(University of Nairobi, 2010)One-dimensional atomic chains can be synthesized on stepped surfaces and the electronic structure of the high vicinal surface plays an essential role in determining the physical properties of atomic chains grown on top of ... -
Anilino-functionalized Graphene Oxide Intercalated With Pt Metal Nanoparticles for Application as Supercapacitor Electrode Material
(University of Nairobi, 2016)Nanostructured anilino-functionalized reduced graphene oxide intercalated with Pt metal nanoparticles was successfully synthesized. Graphene oxide nanosheets were synthesized using a modified Hummers method with simultaneous ... -
Characterization of Vibrio cholerae Bacteriophages Isolated from the Environmental Waters of the Lake Victoria Region of Kenya
(2013)Over the last decade, cholera outbreaks have become common in some parts of Kenya. The most recent cholera outbreak occurred in Coastal and Lake Victoria region during January 2009 and May 2010, where a total of 11,769 ... -
Compositional and Thickness Effects on the Optical Properties of Zinc– Doped Selenium–Antimony Thin Films
(University of Nairobi, 2018)Chalcogenide system of antimony (Sb)-selenium (Se)-zinc (Zn) system is a promising semiconductor for phase change memory devices due to its thermal stability and low power consumption. The study investigated the effect of ... -
Conglomeratin: a New Antibacterial Flavonol Derivative From Macaranga Conglomerata Brenan (Euphorbiaceae)
(University of Nairobi, 2022)A new prenylated kaempferol, conglomeratin (1), alongside 7 known compounds including flavonoids (2 and 3), ellagic acid derivatives (4 and 5), triterpenoids (6 and 7), and a coumarin (8)were isolated from the leaves ... -
Crocidura fumosa
(College of Biological and Physical Sciences, University of Nairobi, 2006) -
Determination of heavy metals and nutrients in rivers Naka and Irigu, Chuka using aas uv/visible spectrophotometry
(University of Nairobi, 2014)Levels of concentration of heavy metals (lead, cadmium, arsenic and mercury) and nutrients in rivers Naka and Irigu were determined in the first three months (January, February and March , 2013 ) and variation downstream ... -
Does the Assumption of Exponential Arrival Distributions in Wireless Sensor Networks Hold?
(University of Nairobi, 2018)Wireless Sensor Networks have seen a tremendous growth in various application areas despite prominent performance and availability challenges. One of the common configurations to prolong the lifetime and deal with the ... -
Effects of Substrate Radial-Position Relative to the Sputter-Gun Axis on the Electrical, Optical and Structural Properties of ZnO Thin Films Deposited by Reactive Direct Current Magnetron Sputtering
(University of Nairobi, 2018)ZnO thin films were deposited using reactive direct current (dc) magnetron sputtering on glass substrates placed at seven variable radial positions (-1, 0, 1, 2, 3, 4 and 5 cm) relative to the sputter-gun (target) axis. ... -
Highly structured TiO2/In(OH)xSy/PbS/PEDOT:PSS to be used in photovoltaic applications
(University of Nairobi, 2006)A new highly structured system based on TiO2/In(OH)xSy/PbS/PEDOT:PSS/Au has been developed for photovoltaic applications. In this device, TiO2, In(OH)xSy, PbS and PEDOT:PSS serve as electron conductor, buffer layer, absorber ... -
Identification and Sorting of Materials With Portable Libs Before Decommissioning
(University of Nairobi, 2016)Laser Induced Breakdown Spectroscopy (LIBS) is a technique of elemental analysis. A laser beam is focused on the surface of the sample to be analyzed. A small quantity of matter is ablated and a plasma formed by the ... -
Influence of the pH of anthocyanins on the efficiency of dye sensitized solar cells
(University of Nairobi, 2022)The influence of the pH of anthocyanins on photovoltaic performance in dye-sensitized solar cells has been investigated. Anthocyanins were extracted from crushed leaf stocks of Manihot esculenta Crantz (Cassava plant) using ... -
International Journal of BioChemiPhysics
(College of Biological and Physical Sciences, 1991) -
J. Petrology
(2013) -
Mathematical Competitions in Africa: Their Prevalence and Relevance to Students and Teachers
(University of Nairobi, 2022)Mathematical competitions feature in most developed countries as a part of the secondary school experience, but to a lesser extent in developing countries. In this paper we investigate how widespread these competitions are ... -
On the performance, availability and energy consumption modelling of clustered IoT systems
(University of Nairobi, 2019)Wireless sensor networks (WSNs) form a large part of the ecosystem of the Internet of Things (IoT), hence they have numerous application domains with varying performance and availability requirements. Limited resources ... -
Optical properties of amorphous Se90-XIn10SbX thin film alloys
(University of Nairobi, 2016)Ternary thin film alloys of Se90-XIn10SbX (x = 1, 4, 10, 15 and 20) were synthesised by flash evaporation of the pre-melt quenched bulk samples under a vacuum of 10−5 Torr. Optical absorption analysis pointed to indirect ...
