Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

An Investigation of the Latent Semantic Analysis Technique for Document Retrieval

AbstractLatent semantic analysis (LSA) application in information retrieval promises to offerbetter performance by overcoming some limitations that plagues traditional termmatchingtechniques. These term-matching techniques have always relied onmatching query terms with document terms to retrieve the documents having termsmatching the query terms. However, by use of these traditional retrieval techniques,users’ needs have not been adequately served. While users want to search throughinformat...

Connecting People Using Latent Semantic Analysis For Knowledge Sharing

AbstractA shift from technology-oriented knowledge management to people-oriented knowledgemanagement is indispensable. To achieve this, organizations must understand the natureof knowledge. In this work, knowledge has been found to be both a process and acollection of artifacts. This makes knowledge and the knower to be two inseparableentities. Consequently, the appropriate way to share both the explicit and the implicitknowledge components is through people-with-people connection. However, f...

Statistical Thermodynamics Of High Tctwo Band Superconductivity In Mgb2

ABSTRACTThermodynamic properties of the multiband high critical temperature superconductors havebeen describedpreviously with simple standard BCS expressions corresponding to and  bands,but the microscopic mechanisms that allow superconductivity to persist at high temperaturesremain unknown. Studies on two band superconductors have previously been described throughone band model; this approach has not adequately addressed cases of inter-band scattering forsuperconductors at high temperature...

A Scinda-Gpsstudy Ofequatorialplasma Bubblesover Kisumu, Kenyaduring2013 -2014 Period

ABSTRACTThe ionosphere is the ionized portion of the atmosphere that stretches from about 50 km to1000 km above the ground. It plays a very important role in the solar effects felt on Earth.Despite various studies having been carried out on occurrence of Equatorial plasmabubbles (EPBs) in Africa, more research needs to be done within East Africa since theionosphere is a highly variable medium resulting from ionizing radiation from the Sun andchanges from region to region. The problem in this ...

The Effects Of Indigenous Catalytic Additives On Quantity And Quality Of Biogas And Bio-Slurry Produced From Uncooked Kitchen Wastes..

ABSTRACTBiogas production in third world countries is still un-optimized and produce very minimal outputs. Optimization of biogas quality by increasing the temperature of the bio-digester is quite technical. On the other hand, commercial enzymes used to increase biogas quantity are also expensive and substrate-specific. T. brownii and Acanthaceae spp. extracts were successfully used to hasten saccharification and fermentation of cellulose during the preparation of traditional alcohols. This s...

Synthesis And Bioassaye Of Chilo Partellus Female Sex Pheromones And Their Analogues

AbstractSynthetic sex pheromones could provide valuable alternativemeans of pest control in Integrated Pest Management (IPM)strategies. Their uses could include population monitoring withpheromone traps to guide other control methods, by mass trappingand mating disruption.(Z)-ll-Hexadecenal (Z-11-C4Hg CH=CH (CHZ) 9 CHO) and (Z)-llhexadecen-l-ol (Z-ll-C/H",CH=CH(CH1 )oCH10H), the major components of '1 £ J £.spotted stalk borer, Chilo pert el Lue (swinhoe) fernale sexpheromone, were prepared...

Impact Of Climate Change On The Spread Of Malaria Among Children Under Five Years In Vihiga County, Kenya

ABSTRACTVihiga County for a long time has been known to be an endemic malaria region.The presence of many rivers and high temperatures, is ideal for mosquitoesbreeding and maturity. However, the impact of changing climate and increasingmalaria prevalence in the region have received little attention. Temperatures haveincreased over the past decades and rainfall decreased. Mosquitoes aretemperature sensitive whereby high temperatures exacerbate their breeding.Therefore, this study aimed at inve...

Application Of Logistic Regression Model To Determine Factors Causing Maternal Mortality: A Case Study Of Migori County Referral Hospital (2007-2015)

AbstractKenya is one of the major contributors to the poor maternal healthstatus in Africa with maternal mortality ratio of 488 maternal deathsper 100,000 live births translating to 7,700 maternal deaths annually [23].There are regional disparities in maternal mortality among the 47 countieswith county with the highest maternal mortality has almost 20 timesmaternal deaths of that with the lowest. Migori County is one of thecounties with the highest burden of maternal mortality in the country ...

Production Of Antiseptic Soap From Psidium Guajava Linn Leaf Extract

ABSTRACT;Amritphala (psidium guajava l) is a small size tree in myrtaceae family, traditionally used in treatment of several diseases such as inflammation, diabetes, hypertension, wounds, pain and fever. When it comes to skin care, the astringents of guava enhance the skin texture and tighten loosened skin. The guava leaves works more effectively than any other skin nourishing lotions in the market. Decoction of immature leaves and fruits can be applied on the skin to prevent tightening and t...

Online Birth Registration System

ABSTRACTA birth certificate is becoming one of the crucial documents a Kenyan must possess. For instance,it is becoming a requirement for standard eight pupils and form four students to produce a birthcertificate, in which a copy will be send to Kenya National Examination Council, for them to beregistered as candidates. Similarly, most institutions require a birth certificate for identificationpurposes if one is not an adult also when processing identification card you have to produce thedocu...

Empowering Women To Aleviate Poverty Through Accessibility To Information: A Case Of Narok Town

ABSTRACTInformation and knowledge play an important role in enabling rural women to achieve economic empowerment through poverty alleviation. The general aim of this study was to determine the contribution of information in the empowerment of rural women. In a bid to achieve this objective, the study sought to assess the roles of information in increasing women access and control of economic resources, in assisting women contribute towards economic decisions at the household and community lev...

Quantum Entanglement Properties Of Polarization States Of A Semi-Classical Optical Parametric Oscillator

ABSTRACTEntanglement is a fundamental feature of quantum mechanics which originated from the 1935 paper of Einstein, Podolsky and Rosen (EPR) and has been demonstrated in many quantum systems for development of quantum technology. Entanglement of photons occurs through polarization states generated in nonlinear parametric processes. The Optical parametric oscillator (OPO) constitutes a nonlinear process in which a pair of entangled photons (signal and idler) is generated when a light mode fro...

Simulation Of Gravimetric Capacity, Structural And Electronic Properties Of Vanadium Disulphide As Anode Material For Lithium-Ion Bettery

ABSTRACTVarious energy sources are utilized at present with a challenge of energy storage inmany cases. The existing rechargeable storage batteries which include sodium-ion andlithium-ion have some limitations in their gravimetric capacities. This can beimproved by incorporating Vanadium disulphide (VS2) due to its metallic propertiesat ground state. In this work we investigate the adsorption of lithium ions on the VS2layered material. Research shows that intercalating lithium ions on a monol...

Effects Of Management And Rainfall Simulation On Soil Respiration And Soil Carbon Store In A Moist Kenyan Savanna, Ruma Lambwe Valley

ABSTRACT The demand for agricultural land is driving the conversion of moist Kenyan savannah into agroecosystems (grazing fields and croplands) and together with altered rainfall patterns, is likely modifying soil moisture, soil respiration and carbon store in the ecosystem. Nevertheless, the carbon dynamics of moist savannas plus of the converted ecosystems are poorly understood yet planning for sustainable use of the ecosystem need to be based on scientific knowledge. While previou...

National Health Practitioner Informatics System

Abstract ICT tools are continuously changing business processes while the Zimbabwe’s public health sector still lags behind. The commercial industry has completely evolved because of eCommerce business models but an e-Health strategy has not yet been implemented in the health sector. The need for a tool to track the areas in the country with critical shortages of public health care professionals and ease manipulation of health practitioner’s data stirred the development of the Nation...


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