Browsing Physics by Issue Date
Now showing items 21-40 of 55
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Price and Volumes Reaction to Annual Earnings Announcement: A Case of the Nairobi Securities Exchange
(2013-02)Modern corporate organizations listed in the security markets periodically communicate their financial performance to stakeholders through earnings announcements. Efficient markets immediately absorb and reflect the new ... -
Conjecture of banach space operator ideals in nuclear spaces
(2013-06)We apply the notion of Banach space operator ideals in nuclear spaces through topological vector spaces. The motivation for this study came from attempts to generalize the structure of nuclear spaces as a result of nuclear ... -
Automation of pressure and temperature measurements in vacuum deposition systems
(2013-08)This paper describes a simple automated instrumentation and measurement system that is designed to offer a more reliable and fast method of measuring temperature and pressure, in thin film deposition systems. ... -
Determination Of The Density And The Damping Properties Of Polyethylene (Pe) And Polylactic (Pla) Films Using Dma
(2013-08)Damping which is an effect that tends to reduce the amplitude of oscillations in an oscillatory system is significant in components under high dynamic loads especially in general mechanical engineering. In this study, ... -
Reflectance, Transmittance and Absorptance of HDPE, LDPE, Glass and Sand Layer Used in a SAH
(2014)The total Infra-red (IR) transmission of polymer films is a very important property in engineering, which determines their suitability for a specific application at a given temperature level. Aiming to investigate the ... -
2D-Euler Deconvolution and Forward Modeling of Gravity Data of Homa-Hills Geothermal Prospect, Kenya
(2014)In order to fully assess the potential of Homa Hills Geothermal prospect, the heat source which is one of the main features of a geothermal system had to be located based on its perturbation on the gravity field. Ground ... -
. Application of banach space ideal properties in image transmission over wireless network
(2014-03)The Banach space operator ideals and nuclear maps have a large class of morphisms which behave as if they were part of a compact closed category, that is, they allow one to transfer variables between the domain and the ... -
Determination of the Class TransitionTemperature and Modulus of PLA Films Using Dynamic Mechanical Analysis at C ° 50 and Amplitude of 10 µm
(2014-03)Polylactic acid (PLA) is an environment friendly biodegradable thermoplastic produced by micro organism synthesis through the fermentation of starch. It can be used in the manufacture of thermoplastic films used to produce ... -
UV Absorption and dynamic mechanical analysis of polyethylene films
(2014-12)Photooxidative processes that lead to chain scission and chain linking in polymers play an important role in polymer degradation. These processes are induced by both ultraviolet (UV) and visible light absorption. The ... -
Analysis of Volatility of Real Exchange Rate and Exports in Kenya using the Garch Model: 2005:2012
(2015)Abstract The real exchange rate has proven to be an important factor in international trade because it is expected that exports respond to real exchange rate movements with respect to the characteristics of the ... -
Polylactic acid (PLA) viscoelastic properties and their degradation compared with those of polyethylene
(2015-12)Polyethylene (PE) films are widely used in packaging. PE is a thermoplastic manufactured from nonrenewable petroleum resources. Due to its non–biodegradability, its films have posed serious pollution problems e.g. visual ... -
The role of academia and industry in nurturing women in physics in Kenya
(2015-12-31)The authors look at some of the primary initiatives taken by the government, academia, and industry to nurture the goals and dreams of Kenyan women physicists. They discuss key transformative lines of progress as evidenced ... -
Characterization and classification of clay minerals for potential applications in Rugi Ward, Kenya
(2016)The applications of various clayey minerals are related to their structural, physical and chemical characteristics. The physical and chemical properties of the clayey minerals dictate their utilization in the process ... -
Modeling and Forecasting Kenyan GDP Using Autoregressive Integrated Moving Average (ARIMA) Models
(Science Publishing Group, 2016-01)The Gross Domestic Product (GDP) is the market value of all goods and services produced within the borders of a nation in a year. In this paper, Kenya’s annual GDP data obtained from the Kenya National Bureau of statistics ... -
First-Principle investigation of the structural, electronic and magnetic properties of Co2VIn and CoVIn Heusler compounds
(2017-01-05)Investigation of the structural, electronic and magnetic properties of full-Heusler Co2VIn as well as half-Heusler CoVIn Cobalt based Heusler compounds using density functional theory (DFT) leads to the general conclusion ... -
Perpendicular magnetic anisotropy in nearly fully compensated ferrimagnetic Heusler alloy Mn0.75Co1.25VIn: An ab initio study
(Elsevier, 2017-11)First principles calculations are reported on perpendicular magnetic anisotropy (PMA) in nearly fully compensated ferrimagnetic Heusler compound Mn0.75Co1.25VIn. The structural, electronic and magnetic properties of ... -
Structural, Electronic and Magnetic Properties of the Heusler Alloy Mn₂VIn: A Combined DFT and Experimental Study
(2017-12)Structural, electronic and magnetic properties of the Heusler alloy Mn₂VIn have been investigated using the density functional theory and experimental techniques. Unlike many other Heusler compounds, Mn₂VIn is not predicted ... -
Perpendicular magnetic anisotropy in Mn2VIn (001) films: An ab initio study
(2017-12-07)First principles study of the magnetic anisotropy of Mn2VIn (001) films show perpendicular magnetic anisotropy (PMA), which increases as a function of the thickness of the film. Density functional theory (DFT) as implemented ... -
APPLICATION OF DESIRABILITY FUNCTION FOR OPTIMIZATION OF MULTIPLE RESPONSES OF WATERMELON USING ORGANIC MANURE
(2018)Field experiment was conducted at horticultural research and teaching farm of Chuka University to evaluate the responses of watermelon to organic manure using Central Composite Design (CCD) to formulate optimal organic ... -
Inversion of Gravity data of Nyabisawa-Bugumbe area of Migori greenstone belt, Kenya
(2018)Migori greenstone belt is one of the major mineral prospects in Kenya, major mining activities are currently conducted by the local artisans using open cast methods. In order to subject the prospect to industrial use, a ...