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Browsing School of Information and Social Studies by Issue Date

Browsing School of Information and Social Studies by Issue Date

Now showing items 1-20 of 103

Application of resource dependency theory and transaction cost theory in analysing outsourcing information communication services decisions: A case of selected public university libraries in Kenya

Kiplang’at, Joseph; Gichoya, David; Mwai, Naomi Wangari (Emerald Group Publishing Limited, 1983)

Purpose – The aim of this paper is to establish how resource dependency theory (RDT) and transaction cost theory (TCT) can inform decisions to outsource ICT services by public university libraries in Kenya. Design/ ...
Temperature dependence of the Hg 6s6p(3P0→3P1) transition induced by nitrogen

Callear, Anthony B; Shiundu, Paul M (Elsevier, 1987)

The rate coefficient of the process Hg 6s6p(3P0→3P1) induced by nitrogen collisions has been measured over the range 285 to 340 K. The temperature variation closely matches that of the concentration of N2(v = 1). The results ...
Computer-controlled apparatus for automated development of continuous flow methods

Wentzell, Peter D; Hatton, Michael J; Shiundu, Paul M; Ree, Ronald M; Wade, Adrian P (1989)

An automated apparatus to assist in the development ofanalytical continuous flow methods is described. The system is capable of controlling and monitoring a variety ofpumps, valves, and detectors through an IBM PC-AT ...
Spectrophotometric determination of palladium with sulfochlorophenolazorhodanine by flow injection

Shiundu, Paul M; Wentzell, Peter D; Wade, Adrian P (1990)

Sulfochlorophenolazorhodanine (as its sodium salt) has been used in the automated development of a sensitive flow-injection procedure for the spectrophotometric determination of palladium. The resulting method has high ...
Automated exploration and exploitation of flow-injection response surfaces

Wadell, A.P; Shiundu, P.M; Wentze, P.D (Elsevier, 1990)

Three-dimensional plots of instrumental responses vs. chemical concentrations or flow parameters have been 1 obtained in an automated manner on a computer-controlled flow-injection methods development system. Consideration ...
Spectrophotometric determination of peroxydisulphate with o-dianisidine by flow injection

Shiundu, Paul M; Wade, Adrian P; Jonnalagadda, S. B (1990)

Precise and accurate knowledge of peroxydisulfate ion concentration is critical in industrial polymer production, where it is extensively used as an activator. Its ability to oxidize in either acidic, neutral, or alkali ...
Development of catalytic photometric flow injection methods for the determination of selenium

Shiundu, Paul M; Wade, Adrian P (1991)
Versatile IEEE-488 data acquisition and control routines for a diode array spectrophotometer

Shiundu, Paul M; Wade, Adrian P (1991)

The UV-visible diode array spectrophotometer is a work-horse instrument for many laboratories. This article provides simple data acquisition and control routines in Microsoft QuickBasic for a HP-8452A diode array ...
Spectrophotometric method for determination of sulfide with iron (III) and nitrilotriacetic acid by flow injection

Kester, Michael D; Shiundu, Paul M; Wade, Adrian P. (Elsevier, 1992)

A manual colorimetric method for determination of sulfide has been adapted to flow injection, systematically optimized, and more fully characterized. Its intended application is for measurement of sodium sulfide reagent ...
Separation of Particles in Nonaqueous Suspensions by Thermal Field-Flow Fractionation

Shiundu, Paul M; Liu, Guangyue; Giddings, J. Calvin (1995)
Size and compositional studies of core-shell latexes using flow and thermal field-flow fractionation

Ratanathanawongs, S Kim; Shiundu, Paul M; Giddings, J Calvin (Elsevier, 1995)

Two field-flow fractionation (FFF) techniques, flow FFF and thermal FFF, have been used as complementary techniques in a study of core-shell latex particles. Different types of physicochemical information about the particles ...
Influence of bulk and surface composition on the retention of colloidal particles in thermal field-flow fractionation

Shiundu, Paul M; Giddings, J. Calvin (Elsevier, 1995)

In this paper we report a wide range of cases in which the retention of colloidal particles in thermal field-flow fractionation (FFF) shows a strong dependence on the chemical composition of the particles or of the particle ...
Isolation and characterization of polymeric and particulate components of acrylonitrile–butadiene–styrene (ABS) plastics by thermal field-flow fractionation

Shiundu, Paul M; Remsen, Edward E; Giddings, J. Calvin (Wiley, 1996)

Thermal field-flow fractionation (ThFFF) is shown here to be capable of isolating the polymeric and rubber particulate components of acrylonitrile–butadiene–styrene (ABS) plastic in a simple analytical procedure. To ...
Screening of potential soil improving legumes for use in the maize based cropping systems of the Trans-Nzoia District of Kenya

Kirungu, BAM; Kasiti, J.I; Dyck, E; Shiundu, P.M (1997)
On farm green manure trials: 1997–1998.

Kirungu, B. A. M; Kamwana, S; Shiundu, P.M; Kasiti, J (1998)
Institutional arrangements towards biotechnology policy making in Kenya

Anyango, B; Shiundu, P (1999)
An analysis of the opportunities for information technology in improving access, transfer and the use of agricultural information in the rural areas of Kenya

Kiplang’at, Joseph (MCB UP Ltd, 1999)

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. ...
Thermal stability of Vernonia galamensis seed oil

Wamalwa, Benny M; Njuguna, Esther N; Shiundu, Paul M; Kamau, Geoffrey N (2000)

The physicochemical changes of refined vernonia oil?RVO (which naturally contains epoxidized triglycerides) upon heating was evaluated and is reported in this manuscript. A boiling point range of 183 °C to 190 °C (at 760 ...
FACTORS AFFECTING PARTICLE RETENTION IN THERMAL FIELD-FLOW FRACTIONATION

Shiundu, Paul M; Munguti, Stephen M; Wamalwa, Ben. M (2002)

In this paper, we report a range of factors which affect the retention of colloidal particles in thermal field-flow fractionation (ThFFF). These results are observed among different sizes of polystyrene (PS) latex particles ...
Adsorption and detection of some phenolic compounds by rice husk ash of Kenyan origin

Mbui, Damaris N; Shiundu, Paul M; Ndonye, Rachel M; Kamau, Geoffrey N (2002)

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 ...

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