Journal Articles

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Access to and Use of ICT's in the Provision of Information to Distance Learners in Kenyan Universities
(2018-03-13) Kamau, Grace Wambui; Kiplang’at, Joseph; Odini, Cephas
The purpose of the study which informs this chapter was to investigate access to and use of ICTs in the provision of information to distance learners at the University of Nairobi (UoN) and Kenyatta University (KU) libraries; and to make recommendations for improvement. The study employed a mixed methods research design. Stratified, purposive and census sampling techniques were alternately used to select key participants namely: distance learners, directorate of distance education, deans of schools and chairmen of departments, university librarians and senior library staff. A sample of 200 distance learners and 56 respondents from the other strata was selected. Data was collected through a semi–structured questionnaire administered to distance learners, semi-structured interviews with the other respondents and documentary review. The data was analysed using descriptive statistics. The key findings of the study were that: distance learners had limited access to and use of ICTs; they could not access e-resources from the university library remotely; and they experienced challenges in accessing information through ICTs. Distance learners will benefit from this study from improved access to information through ICTs thereby increasing the quality of their education. This study will also inform university libraries in Kenya in general and the University of Nairobi and Kenyatta University libraries in particular on improving their information services for distance learners through ICTs.
Accuracy Assessment Of Preliminary Index Diagrams (PIDS) From High Resolution Orthoimages In Kenya
(2017-09-25) Wayumba, Gordon
In Kenya, various types of cadastral maps are in use for land administration; the most famous being Registry Index Maps (RIMs) used in the rural areas due to their ease of production by simple surveying techniques and air survey methods. Such RIMs initially intended as a temporary measure to speed up land registration pending preparation of more accurate documents, are still in use today resulting in unreliable and lack of up to-date survey information for better land administration. This study investigates a new system that would facilitate quick production of reliable, accurate and up to-date cadastral maps for land administration through the use of high spatial resolution satellite imagery (QuickBird). Three types of data were acquired and integrated to provide a database; namely QuickBird orthoimage, orthophoto and parcel areas from the RIMs. The evaluation was made by statistically comparing parcel areas from, orthophoto (reference data), QuickBird satellite orthoimage and the official PID Area List. The study has demonstrated that the high spatial resolution satellite imagery can be used as an input for indirect land surveying methodology. Statistical analysis indicated that there was no significant difference between parcel areas from orthophoto and satellite orthoimage while there was significant difference between PID and orthophoto areas. Good results were obtained for large and medium size parcels with an average area difference of 0.3% and 1.0% respectively and 2.6% for smaller sized parcels. However, with regard to the minimum requirements for a Land Registry Index Map to be of sufficient accuracy to perform its core functions of parcel identification, boundary relocation, mutation surveys and area computation, it can be reasonably concluded that PIDs from QuickBird orthoimage at a scale of 1:5000 met these requirements.
Accuracy Assessment Of Preliminary Index Diagrams (PIDS) From High Resolution Orthoimages In Kenya
(International Journal of Scientific Research and Engineering Studies, 2015-01) Wayumba, Gordon
Abstract: In Kenya, various types of cadastral maps are in use for land administration; the most famous being Registry Index Maps (RIMs) used in the rural areas due to their ease of production by simple surveying techniques and air survey methods. Such RIMs initially intended as a temporary measure to speed up land registration pending preparation of more accurate documents, are still in use today resulting in unreliable and lack of up to-date survey information for better land administration. This study investigates a new system that would facilitate quick production of reliable, accurate and up to-date cadastral maps for land administration through the use of high spatial resolution satellite imagery (QuickBird). Three types of data were acquired and integrated to provide a database; namely QuickBird orthoimage, orthophoto and parcel areas from the RIMs. The evaluation was made by statistically comparing parcel areas from, orthophoto (reference data), QuickBird satellite orthoimage and the official PID Area List. The study has demonstrated that the high spatial resolution satellite imagery can be used as an input for indirect land surveying methodology. Statistical analysis indicated that there was no significant difference between parcel areas from orthophoto and satellite orthoimage while there was significant difference between PID and orthophoto areas. Good results were obtained for large and medium size parcels with an average area difference of 0.3% and 1.0% respectively and 2.6% for smaller sized parcels. However, with regard to the minimum requirements for a Land Registry Index Map to be of sufficient accuracy to perform its core functions of parcel identification, boundary relocation, mutation surveys and area computation, it can be reasonably concluded that PIDs from QuickBird orthoimage at a scale of 1:5000 met these requirements
Adsorption and detection of some phenolic compounds by rice husk ash of Kenyan origin
(2002) Mbui, Damaris N; Shiundu, Paul M; Ndonye, Rachel M; Kamau, Geoffrey N
Rice husk ash (RHA) obtained from a rice mill in Kenya has been used as an inexpensive and effective adsorbent (and reagent) for the removal (and detection) of some phenolic compounds in water. The abundantly available rice mill waste was used in dual laboratory-scale batch experiments to evaluate its potential in: (i) the removal of phenol, 1,3-dihydroxybenzene (resorcinol) and 2-chlorophenol from water; and (ii) the detection of 1,2-dihydroxybenzene (pyrocatechol) and 1,2,3-trihydroxybenzene (pyrogallol) present in an aqueous medium. The studies were conducted using synthetic water with different initial concentrations of the phenolic compounds. The effects of different operating conditions (such as contact time, concentration of the phenolic compounds, adsorbent quantity, temperature, and pH) were assessed by evaluating the phenolic compound removal efficiency as well as the extent of their color formation reactions (where applicable). RHA exhibits reasonable adsorption capacity for the phenolic compounds and follows both Langmuir and Freundlich isotherm models. Adsorption capacities of 1.53 × 10−4, 8.07 × 10−5, and 1.63 × 10−6 mol g−1 were determined for phenol, resorcinol and 2-chlorophenol, respectively. Nearly 100% adsorption of the phenolic compounds was possible and this depended on the weight of RHA employed. For the detection experiments, pyrocatechol and pyrogallol present in water formed coloured complexes with RHA, with the rate of colour formation increasing with temperature, weight of RHA, concentration of the phenolic compounds and sonication. This study has proven that RHA is a useful agricultural waste product for the removal and detection of some phenolic compounds.
Adsorption of Congo Red Dye from Aqueous Solutions Using Roots of Eichhornia Crassipes: Kinetic and Equilibrium Studies
(Elsevier, 2014) Wanyonyi, Wycliffe Chisutia; Onyari, , John Mmari; Shiundu, Paul M
Adsorption of Congo red (CR) from aqueous solution using dried roots of Eichhornia crassipes was studied. Batch experiments were carried out for sorption kinetics and isotherms. Experimental results obtained showed that adsorption process was highly dependent on contact time, adsorbent dosage, initial dye concentration and particle size. The sorption equilibrium for Congo red dye by E. crassipes (roots) was reached within 90 minutes and adsorption efficiency of up to 96% achieved. The sorption kinetics followed a pseudo-second-order kinetic model while Freundlich isotherm model was best applicable for obtaining the equilibrium parameters. These results demonstrate that roots of E. crassipes are effective, environmentally friendly and low-cost biomaterial for dye removal from aqueous dye solutions and industrial effluents.
Adsorption of methylene blue dye from aqueous solutions using Eichhornia crassipes
(2013) Wanyonyi, Wycliffe Chisutia; Onyari, John Mmari; Shiundu, Paul M
Adsorption of methylene blue (MB) from aqueous solution using dried roots, stems, and leaves of Eichhornia crassipes biomass obtained from Lake Victoria was studied. Batch experimental results revealed that the adsorption process was highly dependent on adsorbent dosage, initial MB concentration, E. crassipes particle size and aqueous solution temperature. The isotherm data fitted Freundlich mathematical models with maximum dye adsorption of 35.37 mg g−1. Roots adsorbed over 99 % of the MB in <5 min. Sorption kinetics followed a pseudo-second-order model. Results provide evidence that E. crassipes is an effective and inexpensive biomaterial for dye removal from aqueous dye solutions and industrial effluents.
Adsorption of Pb (II) Ions from Aqueous Solutions by Water Hyacinth (Eichhornia Crassipes): Equilibrium and Kinetic Studies
(2014) Anzeze, Davis Amboga; Onyari, John Mmari; Gichuki, John W; Shiundu, Paul M
The Eichhornia crassipes roots for the removal of Pb (II) ions from aqueous solutions has been investigated. The adsorption of Pb (II) ions was found to be affected by solution pH, contact time, adsorbent dosage, initial metal ion concentration, and temperature. The equilibrium was analysed using Langmuir and Freundlich isotherm models. The data was found to have a closer correlation with the Freundlich isotherm as evidenced by a higher correlation coefficient (R2). The biosorption capacity for E. crasippes was found to be 16.350 mg g-1. The Kinetics data was also subjected to pseudo-first-order and the pseudo-second-order kinetic models. The data could be explained better using the pseudo-second-order kinetic model.
Adsorption Studies of Trimethoprim Antibiotic on Powdered and Granular Activated Carbon in Distilled and Natural Water
(IJSRSET, 2018) Nose, Holiness M.; Opanga, Michael A.; Madadi, Vincent O.; Wandiga, Shem O.; Mirikau, Charles W.; Umuro, Mamo
Contamination of drinking water sources by Pharmaceuticals and Personal Care Products (PPCPs) has raised concerns due to associated negative effects on the ecosystem, which include reproductive and hormonal malfunctions in some living organisms. In addition, occurrence of antibiotics in aquatic environment has been associated with development of antimicrobial resistance. However, the conventional water and wastewater treatment technologies are not effective at removing such organic micro-pollutants from the source waters, hence most of such contaminants find their way through the systems with minimal restrain. Hence accelerated effort to find technologies to enhance removal of recalcitrant organic micro-pollutants from the water and wastewater. The objective of this study was to investigate the removal of Trimethoprim (TMP) from natural water using Powdered Activated Carbon (PAC) and Granular Activated Carbon (GAC). Adsorption experiments were conducted following batch process using natural water and distilled water. We also investigated the effect of pH changes on adsorption of TMP from the water. We obtained better performance for PAC in the removal of TMP compared to GAC. The removal efficiency decreased as a function of TMP concentrations in the aqueous solution. The optimal pH for adsorption was found to be 7, whereas pH values below or above 7 exhibited decreased adsorption of the antibiotic. There was no significant difference in the adsorption of TMP in both natural water and distilled water, which was attributed to limited organic matter in the natural water that was used.
Agent-based modelling of urban sanitation: informal settlements in Nairobi
(2006) Obonyo, Esther; Omenya, Alfred
During the last two decades, Nairobi in Kenya has experienced a rapid increase in its urban population. With the number of houses failing to match the increase in urban population, a number of informal settlements (slums) have mushroomed. As the population of these areas continues to increase, the inability of the local authorities to provide basic sanitation services for the urban dwellers is becoming a serious problem. The unprocessed soil water being discarded into the environment is not only adversely affecting the ecosystem; it is also creating unhygienic conditions that are conducive for the transmission of diseases in the densely populated informal settlements. A number of community-based organisations (CBOs) have undertaken various initiatives to mitigate against such problems. These organizations operate largely independently and there is no evidence of an evaluation being undertaken across the board to model the social, economical and environmental impact of the existing sanitation initiatives. This paper describes a proposed agent-based model that is aimed at doing just that. The proposed system will increase the comparative efficacy in the selected domain by modeling the values and incentives for the different organisations in various scenarios.
Air and blood lead levels in lead acid battery recycling and manufacturing plants in Kenya
(Taylor & Francis, 2012) Were, Faridah H; Kamau, Geoffrey N; Shiundu, Paul M; Wafula, Godfrey A; Moturi, Charles M
The concentration of airborne and blood lead (Pb) was assessed in a Pb acid battery recycling plant and in a Pb acid battery manufacturing plant in Kenya. In the recycling plant, full-shift area samples taken across 5 days in several production sections showed a mean value ± standard deviation (SD) of 427 ± 124 μg/m3, while area samples in the office area had a mean ± SD of 59.2 ± 22.7 μg/m3. In the battery manufacturing plant, full-shift area samples taken across 5 days in several production areas showed a mean value ± SD of 349 ± 107 μg/m3, while area samples in the office area had a mean ± SD of 55.2 ± 33.2 μg/m3. All these mean values exceed the U.S. Occupational Safety and Health Administration's permissible exposure limit of 50 μg/m3 as an 8-hr time-weighted average. In the battery recycling plant, production workers had a mean blood Pb level ± SD of 62.2 ± 12.7 μg/dL, and office workers had a mean blood Pb level ± SD of 43.4 ± 6.6 μg/dL. In the battery manufacturing plant, production workers had a mean blood Pb level ± SD of 59.5 ± 10.1 μg/dL, and office workers had a mean blood Pb level ± SD of 41.6 ± 7.4 μg/dL. All the measured blood Pb levels exceeded 30 μg/dL, which is the maximum blood Pb level recommended by the ACGIH®. Observations made in these facilities revealed numerous sources of Pb exposure due to inadequacies in engineering controls, work practices, respirator use, and personal hygiene
Analysis of Electromagnetic Field Radiation from a Rectangular Cavity-Backed Slot Antenna Using ADI-FDTD Method
(2012) Musyoki, Stephen; Ouma, Heywood A.; K’Onditi, Dominic B.O.; Nyaory, George M.
In this paper, a rectangular Cavity Backed Slot Antenna (CBSA) Model excited by a probe is investigated. The analysis is carried out using the Alternating Direction Implicit - Finite Difference Time Domain (ADI-FDTD) Method which is applied to investigate its characteristics in terms of radiation patterns and power. This is because the method is capable of providing a more accurate definition of the electromagnetic fields within the rectangular apertures, while eliminating the Courant-Friedrich-Levy (CFL) stability condition which is present in the regular Finite Difference Time Domain (FDTD) method. A cavity-backed slot antenna structure with dimensions of 14cm×22cm×30cm is analyzed with the slot and aperture measurements done at 3GHz. Results showing current distribution on the material surrounding the apertures are presented and a discussion on the physical aspects of the aperture radiation phenomenon is also presented.
An Analysis of Indigenous Knowledge Legislation and Policies in Kenya
(2019-07-24) Chepchirchir, Sally; Kwanya, Tom
Since the dawn of history, humanity has always sought more knowledge to feed families, stay healthy, argue with neighbours, and understand the immediate environment, among other issues. Before scientific approaches of knowledge discovery emerged, local ways of solving problems were already strongly established. These ways have persisted to date and comprise what is known as indigenous knowledge (IK). As society scientifically developed, IK became a neglected area whose potential as a resource in development was forgotten. This neglect has led to myriad socioeconomic challenges affecting food security, environmental conservation, health and social cohesion, among others. Therefore, the need to rediscover and mainstream IK in development is great. This need is anchored on the understanding that IK is the basis for local-level decision making in agriculture, healthcare, food preparation, education, natural-resource management, and a host of other activities. One of the perspectives of enhancing the creation, use and perpetuation of IK is enactment of facilitative policies and legislation. This chapter analyses the IK legislation and policies in Kenya and the extent to which they have been implemented and thereafter recommends strategies which can be used to enhance the impact of IK in socioeconomic development in Kenya. Data that informed the study leading to this chapter were collected through content analysis of the existing IK policies and legislation. Additional data were collected through key informant interviews with information science professionals and policy makers. The study revealed that several legislative and policy provisions on the regulation, preservation, management, use and development of indigenous knowledge exist in Kenya. However, there are many gaps in the content and implementation of these provisions which should be addressed to enhance their impact on the promotion, growth and perpetuation of indigenous knowledge in Kenya. The findings here may be used by information practitioners, policy makers and communities to enhance the creation, use and impact of IK.
Analysis of Moss and Topsoil to Monitor Metal Emissions from a Pulp and Paper Mill in Western Kenya
(2011) Adoli, Florence K; Lalah, Joseph O; Okoth, Alexander O
The mean concentrations of Zn, Cu, Cd, Cr and FeinmossesaroundWebuyePanPaperfactorywerefound to be signiﬁcantly higher than in controls taken from Kakamega, indicating atmospheric contribution from the anthropogenic activities within the factory, shown within a radius of 1 km around the factory. The mean concentrations (lg/g dry weight) in the mosses ranged from 60.9–124.5, 22.6–34.2, 13.3–14.7, 20.1–33.3 and 1,822.4– 2,079.2, respectively. The mean concentrations of Pb in mosses sampled from the eastern and western side of the factory were also signiﬁcantly higher than in controls. The mean concentrations of Zn, Cu, Cd, Cr, Pb and Fe in topsoil samples ranged from 7 (Pb)–2,310 (Fe) mg/kg dry wt, depending on sample means based on site direction, distance from the factory and season. There was no clear variation in metal concentrations in mosses and topsoils with direction from the factory which was consistent with the observed ﬂuctuations in wind direction which changed from south-west in the mornings to north and south-west in the afternoons during sampling.
Analysis of Moss and Topsoil to Monitor Metal Emissions from a Pulp and Paper Mill in Western Kenya
(Springer, 2010-07-05) Lalah, Joseph O.
The mean concentrations of Zn, Cu, Cd, Cr and Fe in mosses around Webuye Pan Paper factory were found to be significantly higher than in controls taken from Kakamega, indicating atmospheric contribution from the anthropogenic activities within the factory, shown within a radius of 1 km around the factory. The mean concentrations (lg/g dry weight) in the mosses ranged from 60.9–124.5, 22.6–34.2, 13.3–14.7, 20.1–33.3 and 1,822.4– 2,079.2, respectively. The mean concentrations of Pb in mosses sampled from the eastern and western side of the factory were also significantly higher than in controls. The mean concentrations of Zn, Cu, Cd, Cr, Pb and Fe in topsoil samples ranged from 7 (Pb)–2,310 (Fe) mg/kg dry wt, depending on sample means based on site direction, distance from the factory and season. There was no clear variation in metal concentrations in mosses and topsoils with direction from the factory which was consistent with the observed fluctuations in wind direction which changed from south-west in the mornings to north and south-west in the afternoons during sampling.
An analysis of the opportunities for information technology in improving access, transfer and the use of agricultural information in the rural areas of Kenya
(MCB UP Ltd, 1999) Kiplang’at, Joseph
Presented at the SCANUL‐ECS Conference held in Kenya 23‐26 July 1998. Examines the opportunities of information technology (IT) in improving access, transfer and use of agricultural information in the rural areas of Kenya. This paper has used the term “information technology” to include CD‐ROM, computer networks, desktop publishing, interactive video, packet radio, expert systems, geographical information systems and satellite communications. The methodology adopted by the study was the use of case studies of the organisations and institutions that use IT in disseminating agricultural information to the rural population in Kenya. The study was limited to agricultural information. The information technologies examined include CD‐ROM, computer networks, video and desktop publishing. Highlights the advantages and limitations of IT in disseminating information in the rural areas of Kenya. Among the factors that make IT relevant for rural development are vast storage, fast and inexpensive communication channels, links between different media, easy and enjoyable use at comparatively and steadily declining costs. Concludes that for IT to have more impact on rural development, it should be needs driven, rather than technology driven. This can only be achieved if the needs of the users are placed at the centre and appropriate technologies adopted.
Anthropogenic Sources of Heavy Metals in the Indian Ocean Coast of Kenya
(Springer Science+Business Media, LLC, 2008-11-28) Lalah, Joseph O.
Water and surface sediment samples from Rivers Sabaki, Ramisi and Vevesi that flow into the Indian Ocean coast of Kenya were analysed for heavy metals. The sediment concentrations of exchangeable cations (in μg/g) for Co, Cu, Mn, Ni, Pb, Sn and Zn ranged from 0.10 to 506.75 (for Mn at Sabaki), constituting between 2% and 20% of the total metal concentrations obtained by digestion with strong acid. Cu, Mn, Ni, Pb and Zn were more leachable with 0.1 N HCl. The total dissolved metal in water and the total sediment concentrations for Ag, Cd, Co, Cr, Cu, Mn, Ni, Pb, Sn and Zn are given in the text. For dissolved metals, the metal/Mn ratios indicated higher concentrations of Ag in Sabaki River, Cd in Ramisi, Ni in Sabaki and Pb in Ramisi, respectively. In sediments, the metal/Mn ratios showed higher enrichment of Ag in Ramisi, Cd in Sabaki and Vevesi, and Zn in Sabaki, respectively. Enrichment factors showed elevated levels of Cd, Pb and Zn in sediment in River Sabaki and River Vevesi that were due to anthropogenic inputs through Athi River. The total dissolved metal concentration ranges for the three rivers were comparable with those ranges reported in rivers in South Africa but the sediment concentrations were below those of rivers in Europe and Asia where anthropogenic addition of some of the toxic elements such as Cu, Pb and Cd is evidently higher.
Anti-Schistosomal activity of five plant extracts on Swiss white mice infected with Schistosoma mansoni
(2016-04-13) Waiganjo, Naomi; Yole, Dorcas; Ochanda, Horace
Abstract : Schistosomiasis in humans is a major public health problem worldwide. Schistosomiasis occurs in 76 tropical countries and it is estimated that 85% of the infections are in Africa. In Kenya, it is estimated that 3 million people are infected. The Conventional drugs are effective in the treatment of the disease but very little progress has been achieved on treatment of Schistosomiasis in Kenya. Any effort towards developing alternative drugs for the disease is worthwhile. Praziquantel is the most effective drug against all adult stages of human Schistosomiasis, being the drug of choice for morbidity control of Schistosomiasis. However it is not a satisfying situation to have one drug used for the treatment. Ideally other drugs should be availed in order to avoid development of drug resistance. The use of plant extracts in treatment of diseases is universal. The results obtained showed that Ocimum americanum and Bridelia micrantha plant extracts had antischistosomal activity as indicated by high worm reduction and reduced gross pathology. Histopathology showed no or few granuloma in the liver tissue. Further work should be done on the efficacious extracts, towards drug development.
Antimutagenic effect of Kenyan Tea cultivars in a bacterial test system
(2014) Mbuthia, Karori; Wachira, Francis; Ngure, Raphael; Mireji, Paul O; Wachira, Sabina
The antimutagenic effects of the aqueous tea extracts from Kenyan black, green and purple cultivars were evaluated by the Ames te st using Salmonella typhimurium tester strains TA 1538. Results obtained showed that tea had no toxicity or mutagenic activity at a concentration of 20% (w/v) unlike the mut agen sodium azide. However, using the formulae, percentage inhibition = [1 - T/M] ×10 0 where T is number of revertants per plate in presence of mutagen and test sample and M is number of revertants per plate in positive control, tea extracts had a significant (P<0.05) antimutagenic activity where the percent inhibition was 65% for green te a, 38% for purple tea and 19.17% for black tea. This was attributed to the radical scavenging activity of polyphenols. There is need therefore to carry out further research to help understand the precise mechanism of action especially for black and purple teas, and to explore other beneficial effects that these polyphenols may have, before they can be adopted for therapeutic use.
Application of hydrogeochemical modelling in simulating the transportation of elements in fly ash heap under different disposal systems in South Africa
(2015-07-20) Mbugua, John
Ash heap modelling of South African fly ash from Tutuka was carried out and the duration of transportation projected for 20 years based on two disposal scenarios, namely; irrigation of ash with rainwater, and irrigation with brines. The hydrogeochemical modeling code, PHREEQC, was applied in the study which gave insights into the speciation, release and transport of elements from the water and brines–fly ash long term interactions. Tutuka ash–water heap model showed a general sharp decrease of total elemental concentrations released during the first 2.5 years simulation as the pH value dropped from 12.6 to 8.7, after which it remained constant and their concentration remained constant up to 20 years. The elements showing this trend included Ca, Mg, Al, Fe, Sr, Zn, Na, K, Li and C(4). Generally, brines caused sharp increase in released concentration of the elements Ca, Mg, S(6) and C(4) for the first 3 years of heap irrigation whereas with water irrigation an opposite trend was observed in which the elemental concentrations decreased. Much of the release chemistry of the elements was closely related to the phase dissolution/precipitation and formation as the major controlling factors. Generally therefore, the modelled leachate quality results revealed that many elements are mobile and move through the ash heap in a progressive leaching pathway. The model could therefore be used to provide reasonable leachate quality from the modelled Tutuka ash heap which may be reaching the ground water. Overall, the ash heap modelling enhanced the understanding of the environmental impacts of ash–water–brines interactions and demonstrated that leachate composition is determined by the following factors; (i) the mass flows from the pores of fly ash, (ii) the surface dissolution of the mineral phases, (iii) the various chemical reactions involved during the ash–brine and ash–water interactions, (iv) the interactions with a gas phase (atmospheric CO2), (v) the composition of the initial fly ash, and (vi) the leachate flow and hydrodynamics as captured in the conceptual model. Further model validation is recommended with lysimeters to quantatively compare the simulated results against the experimental data and improve on the model.
Application of Information Systems Theories in Library and Information Science Research: A Content Analysis
(2019-07-17) Onyancha1, *Omwoyo Bosire; Kwanya1, Tom
There is a widely-held belief that the library and information science (LIS) field does not have theories of its own but borrows heavily from a variety of fields. One of the subject domains from which LIS borrows theories is information systems (IS). The purpose of this study was to examine the extent and nature of application of information systems theories in the library and information science research using content analysis techniques. The study extracted relevant data from the Library, Information Science and Technology Abstracts (LISTA), and Library Information Science Source (LISS) databases using the names of 130 IS theories. Data was analysed to determine the most commonly applied theories; the trend of application of the theories in LIS research; the nature of theory application; and the LIS subject areas in which IS theories are mostly applied. The findings reveal that the Technology Acceptance Model (TAM) and the Theory of Planned Behavior (TPB) were the most commonly applied theories in LIS research; theoretical triangulation is rarely applied in LIS research; specific subject areas of IS application in LIS research are diverse with technology acceptance topping the list. Conversely, LIS researchers are increasingly conducting research on areas that relate to ICTs, hence substantial visibility of IS theories in the LIS literature. This pattern has immense implications on LIS research, education and training.

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