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M. PROFMUNAVURAPHAEL. "Owuor, P.O., J.O. Wanyiera, E.K. Njeru, R.M. Munavu and N.M. Bhatt, "Comparison of Chemical Composition and Quality Changes due to Different Withering Methods in Black Tea Manufacture".". In: Trop. Sci., 29, 207-213 (1989). Journal of School of Continuous and Distance Education ; 1989. Abstract
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Oluoch Kosura, W; Michieka RW;, Muchiri G;, Dibbits HJ. Ox-drawn equipment development in Kenya..; 1996. AbstractWebsite

Recent efforts to develop ox-drawn equipment in Kenya arise out of the dilemma caused by unsuccessful efforts to promote tractors. The country has a number of about 10 000 tractors cultivating about 600 000 ha in the large-farm sector and 42 000 ha in the small-farm sector. The tractor market has slowed down to less than 1000 a year. The failure of tractor mechanization in small-scale farming coupled with the lack of ox-drawn equipment means that about 84% of smallholdings is using hand tools. In 1975, a workshop concluded that expanded ox-cultivation has a major part to play in increased agricultural production. After 4 years, the first 3 stages of development of ox-drawn equipment were accomplished. Aspects of local manufacture, training, extension and marketing are discussed.

Muchiri, G; W; Michieka RW;, Dibbits HJ, Dibbits HJ, Oluoch Kosura. Ox-drawn equipment development in Kenya..; 1996. AbstractWebsite

Recent efforts to develop ox-drawn equipment in Kenya arise out of the dilemma caused by unsuccessful efforts to promote tractors. The country has a number of about 10 000 tractors cultivating about 600 000 ha in the large-farm sector and 42 000 ha in the small-farm sector. The tractor market has slowed down to less than 1000 a year. The failure of tractor mechanization in small-scale farming coupled with the lack of ox-drawn equipment means that about 84% of smallholdings is using hand tools. In 1975, a workshop concluded that expanded ox-cultivation has a major part to play in increased agricultural production. After 4 years, the first 3 stages of development of ox-drawn equipment were accomplished. Aspects of local manufacture, training, extension and marketing are discussed.

R.E B, T.M. W, et al. "Oxfendazole Treatment for Cystic Hydatid Disease in Naturally Infected Animals." Antibiotic Agents and Chemotherapy. 1998;42(3):601-605.
OMONDI PROFORATADUKE. "Oxidation of Ascorbic acid on a polyaniline derivatized electrode.". In: Bull. Chem. Soc. Ethiop., 1993, 7(1), 53-60. Earthscan, London. 978-1-84407-469-3 (*); 1993. Abstract
A study of malaria on the Kano Plain, Kisumu District, Western Kenya, was carried out between April and August, 1985. The study included a knowledge, attitudes and practices (K.A.P.) survey on malaria illness and the mosquito vector. Overall knowledge about malaria illness was found to be good. However, treatment and prevention practices of malaria were found to be poor. Knowledge of the mosquito and its relationship to malaria was found to be high. Knowledge of methods of prevention of mosquito bites was also found to be high but actual use of the methods was low. Knowledge of traditional methods of prevention of mosquito bites was also found to be high. Actual use was again found to be low.
O M, Ayah R, Muriuki R, Nyangaya J. Oxygen Access and Affordability in Health Facilities in Kenya.; 2021.
W MRSMUNENGERAHAB. "The oxytocin action of Adenia globosa Engl. Is synergistic with that of oxytocin, prostaglandin f2 - alpha and ergometrine. International Journal of Pharmacognosy. K.A. Sinei, J.W. Mwangi, K.J. Achola, A,M. Mwaura and Rahab W. Munenge.(1994).". In: Afri. J. Oral Hlth. Sci. 2002; 3: 97-99. EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu.; 1994. Abstract

Department of Periodontology/ Community and Preventive Dentistry, School of Dental Sciences, University of Nairobi, P.O. Box 19676 - 00202, Nairobi, Kenya. OBJECTIVE: To determine the influence of oral hygiene habits and practices on the risk of developing oral leukoplakia. DESIGN: Case control study. SETTING: Githongo sublocation in Meru District. SUBJECTS: Eighty five cases and 141 controls identified in a house-to-house screening. RESULTS: The relative risk (RR) of oral leukoplakia increased gradually across the various brushing frequencies from the reference RR of 1.0 in those who brushed three times a day, to 7.6 in the "don't brush" group. The trend of increase was statistically significant (X2 for Trend : p = 0.001). The use of chewing stick as compared to conventional tooth brush had no significant influence on RR of oral leukoplakia. Non-users of toothpastes had a significantly higher risk of oral leukoplakia than users (RR = 1.8; 95% confidence levels (CI) = 1.4-2.5). Among tobacco smokers, the RR increased from 4.6 in those who brushed to 7.3 in those who did not brush. Among non-smokers, the RR of oral leukoplakia in those who did not brush (1.8) compared to those who brushed was also statistically significant (95% CL = 1.6-3.8). CONCLUSION: Failure to brush teeth and none use of toothpastes are significantly associated with the development of oral leukoplakia, while the choice of brushing tools between conventional toothbrush and chewing stick is not. In addition, failure to brush teeth appeared to potentiate the effect of smoking tobacco in the development of oral leukoplakia. Recommendations: Oral health education, instruction and motivation for the improvement of oral hygiene habits and practices; and therefore oral hygiene status, should be among the strategies used in oral leukoplakia preventive and control programmes.

ONJUA PROFOYIEKEJB, OTIENO DRODAWAFRANCISXAVIER. "Oyieke JBO and others. Kenya National Post Abortion Care Curriculum.". In: Trainer. EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu.; 2003. Abstract
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ONJUA PROFOYIEKEJB, OTIENO DRODAWAFRANCISXAVIER. "Oyieke JBO and others. Kenya National Post Abortion Care Curriculum.". In: Trainer. Elsevier; 2003. Abstract
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N PROFOGOLAELIJAHS, OMONDI DROYOOGEORGE. "Oyoo G O and Ogola E N Clinical and socio-demographic aspects of congestive heart failure patients at Kenyatta National Hospital, Nairobi, East African Medical Journal 1999; 76; 23-27.". In: East African Medical Journal 1999; 76; 23-27. Kisipan, M.L.; 1999. Abstract
OBJECTIVE: To analyse the underlying aetiology, precipitating factors and certain socio-demographic determinants in patients admitted to Kenyatta National Hospital, Nairobi in congestive heart failure. DESIGN: Cross sectional descriptive study. SUBJECT: All patients aged thirteen years and above of either sex consecutively admitted with clinical diagnosis of congestive heart failure. SETTING: Kenyatta National Hospital (KNH), a national referral hospital. PATIENT EVALUATION: Detailed history including socio-demographic characteristics and physical examination was done. Patients underwent haematological and biochemistry tests followed by a chest x-ray, ECG and 2D Echo-doppler examination. Blood culture sensitivity was done when clinically indicated. RESULTS: Ninety one patients were studied, 44 males and 47 females. Almost 32% had rheumatic heart disease, 25.2% had cardiomyopathy, 17.6% hypertensive heart disease, 13.2% had pericardial disease while 2.2% had ischaemic heart disease. Three quarters of patients with hypertensive heart disease were above the age of 50 years, while 79% of patients with rheumatic heart disease were below the age of 30 years. Factors associated with patient deterioration leading to admission with congestive heart failure (CHF) included inadequate therapy (27.4%), arrhythmia (20.9%), respiratory infections (17.6%), anaemia (13.2%) and infective endocardiatis. Sixty two per cent of patients investigated were in New York Heart Association (NYHA) functional classification class IV, 31.9% in class III and 5.5% in class II. CONCLUSION: Congestive heart failure constitutes 3.3% of all medical admissions at KNH. Rheumatic heart disease is the commonest cause of congestive heart failure in our set-up while inadequate therapy, arrhythmias and respiratory infections are the three major causes of decompensation in our patients with cardiac disease.
N PROFOGOLAELIJAHS, OMONDI DROYOOGEORGE. "Oyoo G.O OGOLA E.N, Clinical and sociodemographic aspects of congestive heart Failure Patients at Kenyatta National hospital. East Africa Med.J.70: 1999; 76:23-27.". In: East Africa Med.J.70: 1999; 76:23-27. Kisipan, M.L.; 1999. Abstract
OBJECTIVE: To analyse the underlying aetiology, precipitating factors and certain socio-demographic determinants in patients admitted to Kenyatta National Hospital, Nairobi in congestive heart failure. DESIGN: Cross sectional descriptive study. SUBJECT: All patients aged thirteen years and above of either sex consecutively admitted with clinical diagnosis of congestive heart failure. SETTING: Kenyatta National Hospital (KNH), a national referral hospital. PATIENT EVALUATION: Detailed history including socio-demographic characteristics and physical examination was done. Patients underwent haematological and biochemistry tests followed by a chest x-ray, ECG and 2D Echo-doppler examination. Blood culture sensitivity was done when clinically indicated. RESULTS: Ninety one patients were studied, 44 males and 47 females. Almost 32% had rheumatic heart disease, 25.2% had cardiomyopathy, 17.6% hypertensive heart disease, 13.2% had pericardial disease while 2.2% had ischaemic heart disease. Three quarters of patients with hypertensive heart disease were above the age of 50 years, while 79% of patients with rheumatic heart disease were below the age of 30 years. Factors associated with patient deterioration leading to admission with congestive heart failure (CHF) included inadequate therapy (27.4%), arrhythmia (20.9%), respiratory infections (17.6%), anaemia (13.2%) and infective endocardiatis. Sixty two per cent of patients investigated were in New York Heart Association (NYHA) functional classification class IV, 31.9% in class III and 5.5% in class II. CONCLUSION: Congestive heart failure constitutes 3.3% of all medical admissions at KNH. Rheumatic heart disease is the commonest cause of congestive heart failure in our set-up while inadequate therapy, arrhythmias and respiratory infections are the three major causes of decompensation in our patients with cardiac disease.
N PROFOGOLAELIJAHS, OTIENO PROFOGUTUELLY. "Oyoo GO, Ogola EN.Clinical and socio demographic aspects of congestive heart failure patients at Kenyatta National Hospital, Nairobi.East Afr Med J. 1999 Jan;76(1):23-7.". In: East Afr Med J. 1999 Jan;76(1):23-7. Kisipan, M.L.; 1999. Abstract
socio-demographic determinants in patients admitted to Kenyatta National Hospital, Nairobi in congestive heart failure. DESIGN: Cross sectional descriptive study. SUBJECT: All patients aged thirteen years and above of either sex consecutively admitted with clinical diagnosis of congestive heart failure. SETTING: Kenyatta National Hospital (KNH), a national referral hospital. PATIENT EVALUATION: Detailed history including socio-demographic characteristics and physical examination was done. Patients underwent haematological and biochemistry tests followed by a chest x-ray, ECG and 2D Echo-doppler examination. Blood culture sensitivity was done when clinically indicated. RESULTS: Ninety one patients were studied, 44 males and 47 females. Almost 32% had rheumatic heart disease, 25.2% had cardiomyopathy, 17.6% hypertensive heart disease, 13.2% had pericardial disease while 2.2% had ischaemic heart disease. Three quarters of patients with hypertensive heart disease were above the age of 50 years, while 79% of patients with rheumatic heart disease were below the age of 30 years. Factors associated with patient deterioration leading to admission with congestive heart failure (CHF) included inadequate therapy (27.4%), arrhythmia (20.9%), respiratory infections (17.6%), anaemia (13.2%) and infective endocardiatis. Sixty two per cent of patients investigated were in New York Heart Association (NYHA) functional classification class IV, 31.9% in class III and 5.5% in class II. CONCLUSION: Congestive heart failure constitutes 3.3% of all medical admissions at KNH. Rheumatic heart disease is the commonest cause of congestive heart failure in our set-up while inadequate therapy, arrhythmias and respiratory infections are the three major causes of decompensation in our patients with cardiac disease.
N PROFOGOLAELIJAHS, OTIENO PROFOGUTUELLY. "Oyoo GO, Ogola EN.Clinical and socio demographic aspects of congestive heart failure patients at Kenyatta National Hospital, Nairobi.East Afr Med J. 1999 Jan;76(1):23-7.". In: East Afr Med J. 1999 Jan;76(1):23-7. Journal of British Ceramic Transactions, 99 [5], 206-211.; 1999. Abstract
socio-demographic determinants in patients admitted to Kenyatta National Hospital, Nairobi in congestive heart failure. DESIGN: Cross sectional descriptive study. SUBJECT: All patients aged thirteen years and above of either sex consecutively admitted with clinical diagnosis of congestive heart failure. SETTING: Kenyatta National Hospital (KNH), a national referral hospital. PATIENT EVALUATION: Detailed history including socio-demographic characteristics and physical examination was done. Patients underwent haematological and biochemistry tests followed by a chest x-ray, ECG and 2D Echo-doppler examination. Blood culture sensitivity was done when clinically indicated. RESULTS: Ninety one patients were studied, 44 males and 47 females. Almost 32% had rheumatic heart disease, 25.2% had cardiomyopathy, 17.6% hypertensive heart disease, 13.2% had pericardial disease while 2.2% had ischaemic heart disease. Three quarters of patients with hypertensive heart disease were above the age of 50 years, while 79% of patients with rheumatic heart disease were below the age of 30 years. Factors associated with patient deterioration leading to admission with congestive heart failure (CHF) included inadequate therapy (27.4%), arrhythmia (20.9%), respiratory infections (17.6%), anaemia (13.2%) and infective endocardiatis. Sixty two per cent of patients investigated were in New York Heart Association (NYHA) functional classification class IV, 31.9% in class III and 5.5% in class II. CONCLUSION: Congestive heart failure constitutes 3.3% of all medical admissions at KNH. Rheumatic heart disease is the commonest cause of congestive heart failure in our set-up while inadequate therapy, arrhythmias and respiratory infections are the three major causes of decompensation in our patients with cardiac disease.
warming and the emergence of ancient pathogens in arctic GC’s. "Oyugi JO, Hongyu Qiu and David Safronetz." Medical Hypotheses . 2007.
W. PROFJAOKOGODFREY. "Oyugi JO, Oyugi FJO, Otieno CA, Jaoko W, Bwayo JJ & Anzala O (2009) Serologic testing algorithm for recent HIV seroconversion in estimating incidence of HIV-1 among adults visiting a VCT centre at a Kenyan tertiary health institution. East African Medical.". In: UoN research meeting. East African Medical Journal 86(5): 212-8; 2009. Abstract
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W. PROFJAOKOGODFREY. "Oyugi JO, Oyugi FJO, Otieno CA, Jaoko W, Bwayo JJ & Anzala O (2009) Serologic testing algorithm for recent HIV seroconversion in estimating incidence of HIV-1 among adults visiting a VCT centre at a Kenyan tertiary health institution. East African Medical.". In: Beverage among the Abagusii of Western Kenya. East African Medical Journal 86(5): 212-8; 2009. Abstract
Ninety seven patients were examined for dental caries using two standard methods: (a) clinical examination based on WHO Basic Methods Oral Health surveys and (b) radiographic examination. Clinical examination method under records caries by upto 40%. Such under recording may give an impression of a decreasing caries prevalence in epidemiological studies.
W. PROFJAOKOGODFREY. "Oyugi JO, Vouriot FCM, Alimonti J, Wayne S, Luo M, Land AM, Zhujun AO, Yao X, Sekaly RP, Elliott LJ, Simonsen JN, Ball TB, Jaoko W, Kimani J, Plummer FA & Fowke KR (2009) A common CD4 gene variant is associated with increased risk of HIV-1 infection in Ke.". In: UoN research meeting. Journal of Infectious Diseases 199 (9):1327-1334; 2009. Abstract
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W. PROFJAOKOGODFREY. "Oyugi JO, Vouriot FCM, Alimonti J, Wayne S, Luo M, Land AM, Zhujun AO, Yao X, Sekaly RP, Elliott LJ, Simonsen JN, Ball TB, Jaoko W, Kimani J, Plummer FA & Fowke KR (2009) A common CD4 gene variant is associated with increased risk of HIV-1 infection in Ke.". In: Beverage among the Abagusii of Western Kenya. Journal of Infectious Diseases 199 (9):1327-1334; 2009. Abstract
Ninety seven patients were examined for dental caries using two standard methods: (a) clinical examination based on WHO Basic Methods Oral Health surveys and (b) radiographic examination. Clinical examination method under records caries by upto 40%. Such under recording may give an impression of a decreasing caries prevalence in epidemiological studies.
B PROFPATELNILESH, G. PROFKIOYPAUL. "Oyungu, E., Kioy, P.G., Patel, N.B. (2009) Proconvulsant Effect of Khat (Catha edulis) in Spargue Dawley Rats. J. Ethnopharmacol 30: 121(3): 476-8. Epub 2008 Nov 8.". In: Ethiop. 12(2), 121 - 128. International Journal of BiochemiPhysics; 2009. Abstract
Department of Medical Physiology, Moi University, P.O Box 4606, Eldoret, Kenya. erenoyungu2002@yahoo.co.uk ETHNOPHARMACOLOGICAL RELEVANCE: Catha edulis (khat) is a plant whose fresh young leaves are used by an estimated five million people in eastern Africa and the Arabian Peninsula as a drug of recreation. The fresh leaves and shoots are rich in cathinone, a psychostimulant with effects similar to those of amphetamines. Psychostimulants produce a dose-related excitation of the central nervous system which can lead to seizures and convulsions. However there are no reports on studies of the effect of this herb on brain excitability and seizures. This knowledge is useful for doctors who may prescribe drugs whose side effects include lowering seizure threshold because there could be additive proconvulsant effect among khat users. AIM OF THE STUDY: to determined whether khat lowers pentylenetetrazole (PTZ) seizure threshold. METHODOLOGY: Male Sprague dawley rats were given fresh aqueous khat extract, old aqueous khat extract (3 g/kg bw), methylphenidate or saline and the timed intravenous (PTZ) seizure threshold test was used to study its effect on seizure threshold. RESULTS: Fresh khat (3 g/kg) and methylphenidate (4 mg/kg) lowered PTZ seizure threshold. CONCLUSION: Khat lowers seizure threshold. PMID: 19056477 [PubMed - indexed for MEDLINE]
G. PROFKIOYPAUL. "Oyungu, Eren, Kioy, P.G ., Patel, Nilesh B . (2003). Khat (Catha edulis) reduces entylenetetrazol (PTZ) induced seizures. Biochemical Society of Kenya Conference. Nairobi , Kenya . 11-15 August 2003.". In: Biochemical Society of Kenya Conference. International Journal of BiochemiPhysics; 2003. Abstract
Department of Medical Physiology, Moi University, P.O. Box 4606, Eldoret, Kenya. BACKGROUND: Khat is a plant whose young shoots and leaves are habitually used in Eastern Africa and the Arabian Peninsula as a drug of recreation. Although it is used without any control in these regions, it contains two controlled substances, cathinone (schedule I) which is present in fresh khat and cathine (schedule VI) which is a degradation product of cathinone abundant in old khat. OBJECTIVE: To determine the effect of khat on locomotor behaviour and seizures in rats. DESIGN: Experimental study. SETTING: University of Nairobi. SUBJECTS: Adult male rats in groups of six were given fresh khat, old khat, methylphenidate and saline at varying doses and observed over three hours. RESULTS: Fresh khat at low doses and old khat at high doses stimulated locomotor activity. High doses of fresh and old khat induced stereotype behaviour and seizures. CONCLUSION: The results show that khat stimulates locomotor and stereotypic behavioural activity and can induce seizures; results similar to those observed with amphetamine analogs. PMID: 17892196 [PubMed - indexed for MEDLINE]
JANET MSAYUGIROSE. "Ozone Dumping worries the South The Kenya Times Friday December 9.". In: Paris 2011 World Cup in Paris, France. The Icfai University Journal of Architecture, Vol. II No.1, February 2010; 1994. Abstract
In contrast with mammalian cells, little is known about the control of Ca2+ entry into primitive protozoans. Here we report that Ca2+ influx in pathogenic Trypanosoma brucei can be regulated by phospholipase A2 (PLA2) and the subsequent release of arachidonic acid (AA). Several PLA2 inhibitors blocked Ca2+ entry; 3-(4-octadecyl)-benzoylacrylic acid (OBAA; IC50 0.4+/-0.1 microM) was the most potent. We identified in live trypanosomes PLA2 activity that was sensitive to OBAA and could be stimulated by Ca2+, suggesting the presence of positive feedback control. The cell-associated PLA2 activity was able to release [14C]AA from labelled phospholipid substrates. Exogenous AA (5-50 microM) also initiated Ca2+ entry in a manner that was inhibited by the Ca2+ antagonist La3+ (100 microM). Ca2+ entry did not depend on AA metabolism or protein kinase activation. The cell response was specific for AA, and fatty acids with greater saturation than tetraeicosanoic acid (AA) or with chain lengths less than C20 exhibited greatly diminished ability to initiate Ca2+ influx. Myristate and palmitate inhibited PLA2 activity and also inhibited Ca2+ influx. Overall, these results demonstrate that Ca2+ entry into T. brucei can result from phospholipid hydrolysis and the release of eicosanoic acids.

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