Publications

Found 18 results

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2013
Mbuge DO, Kanyara MM, Mutai BK, Murunga S, Mutuli DA, Agullo J. The Effect of Drying Temperature on Nutrient levels in Oyster Mushroom..; 2013. Abstract

Mushrooms have been identified as an underutilized crop in Africa, with many nutritive and health benefits. It does not require much land and investment. However, it is highly perishable and there is need to process it to lengthen its shelf life by drying. However, there is need to ensure that the nutrients are not lost in the process. It is for this reason that this project investigated the effect of drying on nutrient levels in mushroom. Vitamin C levels were monitored in the course of drying at 80⁰C, 60⁰C, 50⁰C, 40⁰C and in direct sunlight. It was concluded that the temperature that gave the best drying rate with minimal nutrient loss was 60⁰C. In general, more than half the Vitamin C is lost during the range of drying temperatures investigated.

2012
Too, K V; Mutai MMMEBK; J. " Too, K V; Mutai, E B K; Mutua, J M; Mutuli, D A; Mbuge, D O .". 2012. Abstract

The groundnut, Arachis hypogaea Linn, samples were collected from the majorly grown areas of western Kenya to investigate the viscoelastic properties pertinent to grain handling, storage and processing. In particular, the study conducted at the University of Nairobi, Department of Environmental and Biosystems laboratories in July 2010, aimed at investigating the stress-strain properties of bulk groundnuts in relation to Maxwell polymer viscoelastic model. The Mohr-Coulomb failure criterion was also applied to bulk groundnuts. Three samples were prepared for triaxial tests; each weighing 1062.4 g. The moisture content of the samples was 7.6%. The sample size for triaxial testing was 100 mm diameter and 199 mm height. Density of the samples during the tests was 678.6 kg/m3. Confining stresses of 200, 400 and 600 kPa were used and Axial Strain Rate (ASR) of 0.5 mm/min was used for the triaxial compression tests. For the senstar universal testing machine relaxation time was about 30 min for each of the samples. Relaxation data was recorded after every 30 sec for the duration of the test (30 min). These results showed that the Maxwell model for viscoelastic polymers can be applied to accurately describe the behaviour of bulk groundnuts.

Rading, G O; Gumbe ML; DO. "Service Life Of HDPE Plastic Dam Lining.". 2012.
2011
Mbuge DO, Gumbe LO, Rading GO. "Analysis of natural degradation of high-density polyethylene lining using time-dependent properties.". 2011. AbstractWebsite

The main objective of this study was to determine the service life of high-density polyethylene lining when exposed to natural degradation in tropical climates using time-dependant properties. The changes in material density, strength, and strain at fracture over the degradation period were determined. Optical micrographs were obtained to track the changes in the material during aging. An exponential decay equation was developed that estimates of the service life of the high-density polyethylene lining. It was concluded that most of the degradation of the material takes place in the first few months of installation and that both the density and mechanical strength of the material increased in the course of degradation, whereas the fracture strain reduced over time. It was concluded that the most important factor that determines the lifespan of the liner is the ability to maintain high strains. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers

Mutai, E B K; Otieno GMMPO; AN;. "Simulation of the Microclimate in Poultry Structures in Kenya.". 2011.
2010
ONYANGO MRMBUGEDUNCAN. "Mbuge, D. O., L. O. Gumbe and G. O. Rading, 2010. Predicting the Service Life of HDPE Plastic Lining for Water Reservoirs Using Viscoelasticity, Journal of Polymer Science and Engineering, Wiley Publications (Accepted for publication).". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. Nyenze E, Ilako D, Kimani K; 2010. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
2008
ONYANGO MRMBUGEDUNCAN. "Mati, B., D. Mbuge, H. Mahoo, G. Kajiru and L. Gallet, 2008. Regional Training Workshop and Writeshop to Document Lessons Learnt from Projects and Programmes in Agricultural Water Management, IMAWESA Proceedings No. 17, November 2008.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2008. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
ONYANGO MRMBUGEDUNCAN. "Principles of a mechanical shaker for coffee harvesting.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2008. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
2006
ONYANGO MRMBUGEDUNCAN. "Onyango, D.M., 2006. Design Protocal for the Design of Flexible HDPE tanks. Southern and Eastern Africa Rainwater Network (SEARNET) Conference, Mombasa.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2006. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
2004
ONYANGO MRMBUGEDUNCAN. "Ngigi, S., J. Thome, K. Mutunga and D. Mbuge, 2004. Proceedings of the GHARP/USAID OFDA Project Planning Workshop, GHARP Publication No. 4.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2004. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
2003
ONYANGO MRMBUGEDUNCAN. "Adhiambo, B., A. Oduor and D. Mbuge, 2003. Rainwater Harvesting for Improved Livelihoods, Exposition Catalogue 2003, Global Water Partnership (GWP) Associated Project of the the Regional Land Management Unit (RELMA) and Kenya Rainwater Association.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2003. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
ONYANGO MRMBUGEDUNCAN. "Obiero, J.P.O, C.O. Thine and D.O. Mbuge, 2003. Rainwater Harvesting for Crop Production in Semi-arid Areas .". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2003. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
ONYANGO MRMBUGEDUNCAN. "Onyango, D.M., 2003. Women at the Source of Life: The Experience of Kenya Rainwater Association, FAO Dimitra Newsletter, No. 8, October 2003, Brussels.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2003. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
2001
ONYANGO MRMBUGEDUNCAN. "Wanyonyi, J.S., S. Ngigi, P. Mwangi and D. Mbuge, 2001. Workshop Proceedings, GHARP Strategic Planning and Project Implementation Planning Workshops, GHARP Publication No. 1.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2001. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
2000
ONYANGO MRMBUGEDUNCAN. "Strength Properties of the East African Bamboo, Proceedings of the Kenya Society of Agricultural Engineers Annual Conference, September 2000.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 2000. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;
1999
ONYANGO MRMBUGEDUNCAN. "The Evaluation of Mechanical Shakers with Reference to Coffee Harvesting, Proceedings of the Kenya Society of Agricultural Engineers Annual Conference, September 2000.". In: Makerere University, Kampala, Elsevier Publishers pp 142-147. CIGR Electocic Journal; 1999. Abstract
isolated from preterm neonates during the outbreak of gastroenteritis in hospital in Nairobi, Kenya, were resistance to trimethoprin-sulfathoxaxole, Chloramphenicol, oxytetracycline and ampicilin, but only a few strains were resistant to cefazolin, cefamandole, cefataximine, amikacin and nalidixic acid. Fourteen different antimicrobial resistance patterns were observed in the 229 strains of E.coli analyzed. Eighty-two percent of the EPEC strains belonged to two resistance patterns. There was no consistent relationship between palsmid profile group and antimicrobial resistance pattern, although one resistance pattern was more frequently observed in EAF-positive strins belonging to the dominant plasmid profile group. Nine percent of the EPEC strins were resistant to gentamicin compared to 37% in the non-EPEC group. No correlation was observed between administration of gentamicin and percentage of resistant strains isolated. None of the nine neonates receiving gentamicin died during the outbreak. Gentamicin resistance was observed in E.coli strains from six out of these nine neonates. Five out of fourteen neonates who received other antimicrobials, or no antibiotic at all, died. Key words: Enteropathogenic Escherichia Coli; antimicrobial resistance;

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